WESTERN SIERRA BANCORP
S-4/A, 1999-02-16
STATE COMMERCIAL BANKS
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM S-4
   
                          PRE-EFFECTIVE AMENDMENT NO. 4
    
             Registration Statement Under the Securities Act of 1933

                             WESTERN SIERRA BANCORP
             (Exact Name of Registrant as Specified in Its Charter)

            CALIFORNIA                6021                68-0390121
        ------------------      -----------------     -------------------
          (State or Other       (Primary Standard      (I.R.S. Employer
          Jurisdiction of          Industrial         Identification No.)
         Incorporation or        Classification
           Organization)          Code Number)


   4011 PLAZA GOLDORADO CIRCLE, CAMERON PARK, CALIFORNIA 95682, (530) 677-5600
   ---------------------------------------------------------------------------
         (Address and Telephone Number of Principal Executive Offices)

           4011 PLAZA GOLDORADO CIRCLE, CAMERON PARK, CALIFORNIA 95682
   ---------------------------------------------------------------------------
                    (Address of Principal Place of Business)

                          GARY D. GALL, PRESIDENT & CEO
   4011 PLAZA GOLDORADO CIRCLE, CAMERON PARK, CALIFORNIA 95682, (530) 677-5600
   ---------------------------------------------------------------------------
               (Name, Address and Telephone of Agent for Service)

                                    Copy to:
           Gary Steven Findley, Esq., Gary Steven Findley & Associates
      1470 North Hundley Street, Anaheim, California 92806, (714) 630-7136

Approximate date of commencement of proposed sale of the securities to the
public: As soon as practicable after the effective date.

If the securities being registered on this form are being offered in connection
with the formation of a holding company and there is compliance with General
Instruction G, check the following box. [ ] __________________.

If this form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, check the following box and list the
Securities Act registration statement number of the earlier effective
registration statement for the same offering. [ ] __________________.

If this form is a post-effective amendment filed pursuant to Rule 462(d) under
the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ] __________________.

The registrant hereby amends this registration statement on such date or dates
as may be necessary to delay its effective date until the registrant shall file
a further amendment which specifically states that this registration statement
shall thereafter become effective in accordance with Section 8(a) of the
Securities Act of 1933 or until the registration statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.
<PAGE>   2

                             WESTERN SIERRA BANCORP

                         CROSS-REFERENCE SHEET ITEMS IN
                       FORM S-4 AND PROSPECTUS PURSUANT TO
                          ITEM 501(B) OF REGULATION S-K


<TABLE>
<CAPTION>
Item No.               Form S-4 Caption                         Location in Prospectus
- -------      -----------------------------------------          ----------------------
<S>          <C>                                                <C>
  1.         Forepart of Registration Statement and             Same
             Outside Front Cover Page of Prospectus

  2.         Inside Front and Outside Back Cover Pages          Same
             of Prospectus


  3.         Risk Factors, Ratio of Earnings to Fixed           RISK FACTORS
             Charges and Other Information

  4.         Terms of the Transaction                           SUMMARY, THE WESTERN
                                                                SIERRA/LAKE COMMUNITY
                                                                MERGER AND RELATED
                                                                TRANSACTIONS, THE WESTERN
                                                                SIERRA/ROSEVILLE MERGER AND
                                                                RELATED TRANSACTIONS

  5.         Pro Forma Financial Information                    SUMMARY, PRO FORMA FINANCIAL
                                                                STATEMENTS

  6.         Material Contracts with the Company being          THE WESTERN SIERRA/LAKE
             Acquired                                           COMMUNITY MERGER AND
                                                                RELATED TRANSACTIONS -
                                                                Interests of Certain Persons in the
                                                                Western Sierra/Lake Community Merger
                                                                and Material Contracts with Lake
                                                                Community and its Affiliates, and THE
                                                                WESTERN SIERRA/ROSEVILLE MERGER AND
                                                                RELATED TRANSACTIONS - Interests of
                                                                Certain Persons in the Western
                                                                Sierra/Roseville Merger and Material
                                                                Contracts with Roseville and its
                                                                Affiliates.

  7.         Additional Information Required for                Not Applicable
             Reoffering by Persons and Parties Deemed
             to be Underwriters
</TABLE>

   
    
<PAGE>   3
   
<TABLE>
<S>          <C>                                                <C>
  8.         Interests of Named Experts and Counsel             THE WESTERN SIERRA/LAKE
                                                                COMMUNITY MERGER AND
                                                                RELATED TRANSACTIONS - Opinions
                                                                of Financial Advisors, THE WESTERN
                                                                SIERRA/ROSEVILLE MERGER AND
                                                                RELATED TRANSACTIONS - Opinion
                                                                of Roseville's Financial Advisor and
                                                                EXPERTS

  9.         Disclosure of Commission Position on               Not Applicable
             Indemnification for Securities Act Lia-
             bilities

  10.        Information with Respect to S-3 Registrants        Not Applicable

  11.        Incorporation of Certain Information by            Not Applicable
             Reference

  12.        Information with Respect to S-2 or S-3             Not Applicable
             Registrants

  13.        Incorporation of Certain Information by            Not Applicable
             Reference

  14.        Information with Respect to Registrants            SUMMARY, DESCRIPTION OF
             other than S-2 or S-3 Registrants                  WESTERN SIERRA, DESCRIPTION OF
                                                                THE CAPITAL STOCK OF WESTERN SIERRA, 
                                                                LAKE COMMUNITY AND ROSEVILLE, MARKET
                                                                PRICES, DIVIDENDS, PRO FORMA FINANCIAL
                                                                STATEMENTS, REGULATORY CAPITAL
                                                                ADEQUACY, AND FINANCIAL STATEMENTS OF
                                                                WESTERN SIERRA.

  15.        Information with Respect to Registrants            Not Applicable
             other than S-3 Companies

  16.        Information with Respect to S-2 or S-3             Not Applicable
             Companies

  17.        Information with Respect to Companies              SUMMARY, DESCRIPTION OF LAKE
             other than S-3 or S-2 Companies                    COMMUNITY, DESCRIPTION OF
                                                                ROSEVILLE, DESCRIPTION OF THE CAPITAL
                                                                STOCK OF WESTERN SIERRA, LAKE
                                                                COMMUNITY AND ROSEVILLE, MARKET
                                                                PRICES, DIVIDENDS, PRO FORMA FINANCIAL
                                                                STATEMENTS, REGULATORY CAPITAL
                                                                ADEQUACY, AND FINANCIAL STATEMENTS OF
                                                                LAKE COMMUNITY AND ROSEVILLE.
</TABLE>
    

   
    
<PAGE>   4
<TABLE>
<S>          <C>                                                <C>
  18.        Information if Proxies, Consents or                SUMMARY AND INTRODUCTION
             Authorizations are to be Solicited

  19.        Information if Proxies, Consents or                Not Applicable
             Authorizations are not to be Solicited or in
             an Exchange Offer
</TABLE>

   
    
<PAGE>   5

   
                            Joint Proxy Statement of
                  Western Sierra Bancorp, Lake Community Bank
                      and Roseville 1st Community Bancorp
                               and Prospectus of
                             Western Sierra Bancorp

We are proposing to merge Lake Community Bank and Roseville 1st Community
Bancorp with Western Sierra Bancorp in independent transactions.
    

   
o    To Western Sierra Shareholders:  The Board of Directors of Western Sierra
     is asking you to vote on the merger between Western Sierra and Lake
     Community and the merger between Western Sierra and Roseville. Western
     Sierra will issue shares of its common stock to shareholders of Lake
     Community and Roseville in the mergers. Western Sierra expects that it will
     issue a maximum of 896,473 shares of its common stock in the Western
     Sierra/Lake Community merger and a maximum of 449,045 shares of its common
     stock in the Western Sierra/Roseville merger. Western Sierra common stock
     is not traded on any national securities exchange or included in NASDAQ.

o    To Lake Community Shareholders: The Board of Directors of Lake Community is
     asking you to vote on the merger between Western Sierra and Lake Community.
     IF THE WESTERN SIERRA/LAKE COMMUNITY MERGER IS COMPLETED, LAKE COMMUNITY
     SHAREHOLDERS WHO DO NOT EXERCISE DISSENTERS' RIGHTS WILL RECEIVE FROM
     WESTERN SIERRA .6905 SHARES OF WESTERN SIERRA COMMON STOCK FOR EACH SHARE
     OF LAKE COMMUNITY COMMON STOCK, WHICH IS THE EQUIVALENT OF $11.56 PER
     SHARE FOR EACH SHARE OF LAKE COMMUNITY COMMON STOCK BASED ON THE SALES
     PRICE OF WESTERN SIERRA COMMON STOCK AS OF FEBRUARY 9, 1999.

o    To Roseville Shareholders: The Board of Directors of Roseville is asking
     you to vote on the merger between Western Sierra and Roseville. IF THE
     WESTERN SIERRA/ROSEVILLE MERGER IS COMPLETED, ROSEVILLE SHAREHOLDERS WHO DO
     NOT EXERCISE DISSENTERS' RIGHTS WILL RECEIVE FROM WESTERN SIERRA 1.2110
     SHARES OF WESTERN SIERRA COMMON STOCK FOR EACH SHARE OF ROSEVILLE COMMON
     STOCK, WHICH IS THE EQUIVALENT OF $20.28 PER SHARE FOR EACH SHARE OF
     ROSEVILLE COMMON STOCK BASED ON THE SALES PRICE OF WESTERN SIERRA COMMON
     STOCK AS OF FEBRUARY 9, 1999.
    

   
THE SECURITIES ARE SUBJECT TO INVESTMENT RISKS, INCLUDING POSSIBLE LOSS OF THE
PRINCIPAL INVESTED. FOR A DISCUSSION OF FACTORS IMPORTANT TO THE DECISION TO
APPROVE THE MERGERS, SEE "RISK FACTORS" ON PAGE 18. IN ADDITION, THE SECURITIES
OFFERED ARE NOT DEPOSITS AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE
CORPORATION.
    

NEITHER THE SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES
REGULATORS HAVE APPROVED EITHER MERGER DESCRIBED IN THIS JOINT PROXY
STATEMENT/PROSPECTUS OR THE WESTERN SIERRA COMMON STOCK TO BE ISSUED IN THE
MERGERS, NOR HAVE THEY DETERMINED IF THIS JOINT PROXY STATEMENT/PROSPECTUS IS
ACCURATE OR ADEQUATE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

   
   The date of this joint proxy statement/prospectus is February 16, 1999 and
      is first being mailed to shareholders on or about February 19, 1999
    
<PAGE>   6

   
                                Table of Contents
    

   
<TABLE>
<CAPTION>
                                                                                                                        PAGE
                                                                                                                        ----
<S>                                                                                                                     <C>
Questions and Answers About the Western Sierra/Lake Community Merger and the Western Sierra/Roseville Merger............  1

Summary.................................................................................................................  3

Organizational Chart....................................................................................................  8

Risk Factors............................................................................................................ 18

Introduction............................................................................................................ 23
            Matters to be Considered at the Shareholders' Meetings...................................................... 23
            Record Dates................................................................................................ 24
            Outstanding Securities and Voting Rights.................................................................... 24
            Recommendations of the Boards of Directors.................................................................. 25
            Revocability of Proxies..................................................................................... 26
            Cost of Solicitation of Proxies............................................................................. 26
            Beneficial Ownership of Principal Shareholders and Management............................................... 28

Description of the Western Sierra/Lake Community Merger................................................................. 34
            General..................................................................................................... 34
            Background and Reasons for the Western Sierra/Lake Community Merger......................................... 34
            Lake Community Conversion Rate and Exchange of Shares and Options........................................... 38
            Interests of Certain Persons in the Western Sierra/Lake Community Merger
                        and Material Contracts with Lake Community and its Affiliates................................... 39
            Regulatory Approval and Completion of the Western Sierra/Lake Community  Merger............................. 41
            Conditions to the Western Sierra/Lake Community Merger...................................................... 42
            Waiver, Amendment, and Termination.......................................................................... 44
            Liquidated Damages.......................................................................................... 45
            Opinions of Financial Advisors.............................................................................. 46
            Federal and California Income Tax Consequences.............................................................. 56
            Rights of Dissenting Shareholders of Lake Community and Western Sierra...................................... 58

Description of the Western Sierra/Roseville Merger...................................................................... 61
            General..................................................................................................... 61
            Background and Reasons for the Western Sierra/Roseville Merger.............................................. 61
            Roseville Conversion Rate and Exchange of Shares and Options................................................ 67
            Interests of Certain Persons in the Western Sierra/Roseville Merger
                        and Material Contracts with Roseville and its Affiliates........................................ 68
</TABLE>
    

   
    

<PAGE>   7

   
                                Table of Contents
                                -----------------

<TABLE>
<CAPTION>
                                                                                                                        PAGE
                                                                                                                        ----
<S>                                                                                                                    <C>
            Regulatory Approval and Completion of the Western Sierra/Roseville Merger................................... 70
            Conditions to the Western Sierra/Roseville Merger........................................................... 71
            Waiver, Amendment, and Termination.........................................................................  72
            Liquidated Damages.........................................................................................  74
            Opinion of Roseville's Financial Advisor...................................................................  75
            Federal and California Income Tax Consequences.............................................................  80
            Rights of Dissenting Shareholders of Roseville and Western Sierra..........................................  81

Description of the Capital Stock of Western Sierra, Lake Community and Roseville.......................................  85
            Western Sierra.............................................................................................  85
            Lake Community.............................................................................................  86
            Roseville..................................................................................................  87
            Western Sierra Following the Western Sierra/Lake Community Merger and the Western Sierra/Roseville Merger..  88

Market Prices..........................................................................................................  89
            Western Sierra.............................................................................................  89
            Lake Community.............................................................................................  90
            Roseville..................................................................................................  91

Dividends..............................................................................................................  92
            Western Sierra.............................................................................................  92
            Lake Community.............................................................................................  92
            Roseville..................................................................................................  93
            Western Sierra Following the Western Sierra/Lake Community Merger and the Western Sierra/Roseville Merger..  93

Pro Forma Financial Statements.........................................................................................  94
            Western Sierra/Lake Community Merger.......................................................................  94
            Western Sierra/Roseville Merger............................................................................ 104
            Western Sierra Following the Western Sierra/Lake Community Merger and the Western Sierra/Roseville Merger.. 114

Regulatory Capital Adequacy............................................................................................ 125

Description of Western Sierra.......................................................................................... 123
            Business................................................................................................... 123
            Summary of Earnings........................................................................................ 127
            Western Sierra's Management's Discussion and Analysis of Financial Condition And Results of Operations..... 129
            Management................................................................................................. 152
            Certain Transactions....................................................................................... 158
</TABLE>
    

   
    
<PAGE>   8

   
                                Table of Contents
                                -----------------
<TABLE>
<CAPTION>
                                                                                                                        PAGE
                                                                                                                        ----
<S>                                                                                                                    <C>
Description of Lake Community.......................................................................................... 159
            Business................................................................................................... 159
            Summary of Earnings........................................................................................ 161
            Lake Community's Management's Discussion and Analysis of Financial Condition and Results of Operations..... 163
            Management................................................................................................. 189
            Certain Transactions....................................................................................... 194

Description of Roseville............................................................................................... 195
            Business................................................................................................... 195
            Summary of Earnings........................................................................................ 200
            Roseville's Management's Discussion and Analysis of Financial Condition and Results of Operations.......... 201
            Management................................................................................................. 227
            Certain Transactions....................................................................................... 232

Information Concerning Western Sierra, Lake Community and Roseville.................................................... 232
            Competition................................................................................................ 232
            Effect of Governmental Policies and Recent Legislation..................................................... 233
            Current Accounting Developments............................................................................ 233
            Recent Legislation and Other Changes....................................................................... 234
            Pending Legislation and Regulations........................................................................ 238

Description of Western Sierra Following the Western Sierra/Lake Community Merger and the Western Sierra/
Roseville Merger....................................................................................................... 238
            Business................................................................................................... 238
            Management................................................................................................. 239
            Limitation of Liability and Indemnification................................................................ 240
            Independent Public Accountants............................................................................. 241

Experts................................................................................................................ 241

Legal Matters.......................................................................................................... 242

Other Business......................................................................................................... 242

Index to Financial Statements...........................................................................................243
</TABLE>
    


   
    

<PAGE>   9

   
                                Table of Contents
                                -----------------
    

<TABLE>
<S>              <C>
Exhibit I        Agreement and Plan of Reorganization and Merger by and among Western
                 Sierra, LMC Merger Company and Lake Community and Amendment
                 No. 1

Exhibit II       Agreement and Plan of Reorganization and Merger by and among Western
                 Sierra and Roseville and Amendment No. 1

Exhibit III      December 24, 1998 Opinion of The Findley Group to Western Sierra

Exhibit IV       December 24, 1998 Opinion of The Banc Stock Group, Inc. to Lake
                 Community

Exhibit V        December 24, 1998 Opinion of The Banc Stock Group, Inc. to Roseville

Exhibit VI       Sections 1300-1304 of the California General Corporation Law
</TABLE>


   
    

<PAGE>   10

   
                         Questions and Answers About the
                      Western Sierra/Lake Community Merger
                     and the Western Sierra/Roseville Merger
    

Q1.     Why are Lake Community and Roseville being acquired by Western Sierra in
        the Western Sierra/Lake Community merger and the Western
        Sierra/Roseville merger?

A.      We believe that shareholders of Lake Community, Roseville and Western
        Sierra will benefit from the Western Sierra/Lake Community merger and
        the Western Sierra/ Roseville merger because the potential for the
        combined company exceeds what each company could accomplish
        individually.

        We believe the similar and complementary financial products and services
        provided by Western Sierra, Lake Community and Roseville in different
        markets in Northern California will contribute to the future performance
        of the combined company and provide a larger number of shareholders. We
        believe that having more shareholders will increase the liquidity of the
        shares of Western Sierra common stock owned by Western Sierra, Lake
        Community and Roseville shareholders when the mergers are completed.

Q2.     What am I being asked to vote on?

   
A.      If you are a shareholder of Lake Community, you are being asked to
        approve the merger between Western Sierra and Lake Community.

        If you are a shareholder of Roseville, you are being asked to approve
        the merger between Western Sierra and Roseville.

        If you are a shareholder of Western Sierra, you are being asked to
        approve each of the mergers.
    

Q3.     What do I need to do now?

A.      You need to read this joint proxy statement/prospectus and sign your
        proxy card and mail it to us in the enclosed return envelope as soon as
        possible.

Q4.     Should I send in my stock certificates now?

A.      No. If you are a Lake Community shareholder or a Roseville shareholder,
        and your respective merger is completed, Western Sierra will send you
        written instructions for exchanging your shares of common stock.

   
Q5.     Will I receive any cash if either or both of the mergers is completed?

A.      Yes. Even though both mergers will occur through a stock for stock
        exchange, a small amount of cash will be paid for fractional shares of
        Western Sierra common stock to be issued in the mergers. In addition,
        cash will be paid to shareholders of Western Sierra, Lake Community and
        Roseville who exercise dissenters' rights.
    

                                       1
<PAGE>   11

   
    

Q6.     What is Western Sierra's dividend policy?

A.      Western Sierra has never paid any cash dividends and does not have any
        present intention to do so in the near future. However, Western Sierra
        has paid stock dividends in the past and does anticipate continuing to
        do so in the future.

Q7.     When are the Western Sierra/Lake Community merger and Western
        Sierra/Roseville merger expected to be completed?

A.      Western Sierra and Lake Community expect the Western Sierra/Lake
        Community merger to be completed by April 30, 1999 and Western Sierra
        and Roseville expect the Western Sierra/Roseville merger to be completed
        by April 30, 1999.


                                       2
<PAGE>   12

   
                                    Summary
                                    -------
    

   
    

   
This summary highlights selected information from this document and does not
contain all of the information that is important. To understand the mergers
fully and for a more complete description of the legal terms of the mergers, you
should read this entire document and the documents to which we have referred
you. See also, "Who Can Help Answer Your Questions" on page 7.
    

   
THE COMPANIES (PAGES 127, 163 AND 199)
    

WESTERN SIERRA BANCORP
4011 Plaza Goldorado Circle
Cameron Park, California 95682
(530) 677-5600

   
Western Sierra is a one bank holding company headquartered in Cameron Park,
California. Its sole bank subsidiary is Western Sierra National Bank which
serves El Dorado and Placer Counties. At September 30, 1998, Western Sierra
National Bank had assets of $135 million and one head office and five branch
offices.

LAKE COMMUNITY BANK
805 Eleventh Street
Lakeport, California 95453
(707) 262-3310

Lake Community is a California state-chartered bank headquartered in Lakeport,
California serving Lakeport and surrounding communities. At September 30, 1998,
Lake Community had $85 million in assets with two branches.

ROSEVILLE 1ST COMMUNITY BANCORP
1801 Douglas Boulevard
Roseville, California 95661
(916) 773-3333

Roseville is a one bank holding company headquartered in Roseville, California.
Its sole bank subsidiary is Roseville 1st National Bank which serves Placer,
Sacramento and Butte Counties. At September 30, 1998, Roseville 1st National
Bank had assets of $53 million and one branch office.

THE WESTERN SIERRA/LAKE COMMUNITY MERGER (PAGE 33)

The Western Sierra/Lake Community merger will combine the businesses of Western
Sierra and Lake Community under Western Sierra. Lake Community will continue
after the Western Sierra/Lake Community merger with the same name and continue
to serve Lakeport and surrounding communities.

Lake Community shareholders will, after completion of the Western Sierra/Lake
Community merger, receive from Western Sierra .6905 shares of Western Sierra
common stock for each 
    

                                       3
<PAGE>   13

   
share of Lake Community common stock, which is the equivalent of $11.56 per
share for each share of Lake Community common stock based on the sales price of
Western Sierra common stock as of February 9, 1999.

If the Western Sierra/Lake Community merger and Western Sierra/Roseville merger
are completed, Lake Community shareholders will own approximately 38.5% of
Western Sierra, and if the Western Sierra/Lake Community merger is completed but
the Western Sierra/Roseville merger is not completed, Lake Community
shareholders will own approximately 47.7% of Western Sierra.

THE WESTERN SIERRA/ROSEVILLE MERGER (PAGE 63)

The Western Sierra/Roseville merger will combine the businesses of Western
Sierra and Roseville under Western Sierra.

Roseville shareholders will, after completion of the Western Sierra/Roseville
merger receive from Western Sierra 1.2110 shares of Western Sierra common stock
for each share of Roseville common stock, which is the equivalent of $20.28 per
share for each share of Roseville common stock based on the sales price of
Western Sierra common stock as of February 9, 1999.

If the Western Sierra/Lake Community merger and Western Sierra/Roseville merger
are completed, Roseville shareholders will own approximately 19.3% of Western
Sierra, and if the Western Sierra/Roseville merger is completed but the Western
Sierra/Lake Community merger is not completed, Roseville shareholders will own
approximately 31.4% of Western Sierra.

RECOMMENDATIONS TO SHAREHOLDERS (PAGES 25-26)

To Western Sierra shareholders:

        Western Sierra's Board of Directors unanimously recommends a vote "FOR"
        approval of both the Western Sierra/Lake Community merger and the
        Western Sierra/Roseville merger.
    

To Lake Community shareholders:

   
        Lake Community's Board of Directors unanimously recommends a vote "FOR"
        approval of the Western Sierra/Lake Community merger.
    

To Roseville shareholders:

   
        Roseville's Board of Directors unanimously recommends a vote "FOR"
        approval of the Western Sierra/Roseville merger.
    

   
THE MEETINGS
    

   
The Western Sierra Meeting will be held at 4011 Plaza Goldorado Circle, Cameron
Park, California, at 6:30 p.m., on Tuesday, March 23, 1999.
    

   
    
                                       4
<PAGE>   14

   
The Lake Community Meeting will be held at 805 Eleventh Street, Lakeport,
California, at 5:00 p.m., on Monday, March 22, 1999. 

The Roseville Meeting will be held at 1801 Douglas Boulevard, Roseville,
California, at 4:00 p.m., on Tuesday, March 23, 1999.

RECORD DATE, VOTING POWER AND VOTE REQUIRED (PAGE 24)

On February 11, 1999, the record date for the Western Sierra Meeting, there were
981,448 shares of Western Sierra common stock outstanding. On February 11, 1999,
the record date for the Lake Community Meeting, there were 1,298,296 shares of
Lake Community common stock outstanding. On February 11, 1999, the record date
for the Roseville Meeting, there were 370,805 shares of Roseville common stock
outstanding.

Approval of the Western Sierra/Lake Community merger requires the affirmative
vote of the holders of a majority of the outstanding shares of Western Sierra
common stock and Lake Community common stock. Approval of the Western
Sierra/Roseville merger requires the affirmative vote of the holders of a
majority of the outstanding shares of Western Sierra common stock and Roseville
common stock.

FINANCIAL ADVISORS ISSUE OPINIONS THAT MERGER CONSIDERATION IS FAIR (PAGES 45-
58 AND 77-82)

The Findley Group has issued a fairness opinion that states that the terms of
the Western Sierra/Lake Community agreement are fair, from a financial point of
view, to the shareholders of Western Sierra. Western Sierra paid The Findley
Group $10,000 for its opinion. Gary Findley, principal of Gary Steven Findley &
Associates, counsel to Western Sierra, is also the owner of The Findley Group.
Western Sierra was aware of Mr. Findley's role in both companies and does not
believe there is a conflict. Mr. Findley did not participate in the negotiations
for the merger with Lake Community. The Findley Group is a well known investment
banking firm and has provided fairness opinions in similar transactions.

The Banc Stock Group has issued a fairness opinion that the conversion rate of
the Western Sierra/Lake Community agreement is fair, from a financial point of
view, to the shareholders of Lake Community. Lake Community paid Banc Stock
Group $20,000 for advisory services and $16,500 for its opinion.

The Banc Stock Group has issued an opinion that states that the conversion rate 
of the Western Sierra/Roseville agreement is fair, from a financial point of
view, to the shareholders of Roseville. Roseville paid Banc Stock Group $14,000
for its opinion.

We encourage you to read these opinions carefully.

THE BOARDS EXPECT THE MERGERS TO BE TAX FREE (PAGES 58-59 AND 82-84)

Perry-Smith & Co., LLP has issued an opinion as to material federal and
California state income tax consequences for the Western Sierra/Lake Community
merger and a separate opinion as to the Western Sierra/Roseville merger. The
opinions state that Lake Community shareholders in the Western Sierra/Lake
Community merger and Roseville shareholders in the Western 
    


                                       5
<PAGE>   15

   
Sierra/Roseville merger will not recognize gain or loss for federal and
California income tax purposes as a result of the respective mergers, except if
they receive cash for fractional shares or dissenting shares.
    

   
INTERESTS OF DIRECTORS AND EXECUTIVE OFFICERS IN THE WESTERN SIERRA/LAKE
COMMUNITY MERGER (PAGES 39-41)
    

Upon completion of the Western Sierra/Lake Community merger, Gary Nordine, the
past President of Lake Community, will receive a severance payment of $145,000
after taxes, with the tax liability being shared equally by Western Sierra and
Lake Community.

   
REQUIREMENTS TO BE MET IN THE MERGERS (PAGES 41-43 AND 73-75)
    

There are a number of requirements which must be met before the mergers are
completed. Among these requirements are the following:

   
- -       shareholder approvals of the Western Sierra/Lake Community agreement and
        the Western Sierra/Roseville agreement must be obtained;

- -       all necessary banking regulatory agency approvals must be obtained;

- -       Perry-Smith & Co., LLP must have issued opinions that the respective
        mergers may be accounted for as a pooling of interests;

- -       opinions of counsel of the parties to the mergers must be issued;

- -       no lawsuit or threatened lawsuit regarding the respective mergers shall
        be pending; and

- -       the holders of no more than 10% of the outstanding shares shall have
        exercised dissenters' rights in the respective mergers.

MERGERS TO BE ACCOUNTED FOR AS POOLING OF INTERESTS (PAGE 95)

Western Sierra will account for both mergers as a pooling of interests. Pooling
of interests accounting treatment avoids the creation of goodwill in the mergers
and allows Western Sierra to avoid charges against future earnings from
amortizing goodwill. This accounting method also means that after the Western
Sierra/Lake Community merger, Western Sierra will report financial results as if
Lake Community had always been combined with Western Sierra, and after the
Western Sierra/Roseville merger, Western Sierra will report financial results as
if Roseville had always been combined with Western Sierra. If Western Sierra is
not able to use pooling of interests method of accounting in either merger, that
merger will not be completed.

APPRAISAL RIGHTS IN THE MERGERS (PAGES 59-62, 84-86 AND EXHIBIT VI)

If you are a shareholder of either Western Sierra, Lake Community or Roseville,
you may dissent from the respective mergers and demand payment in cash equal to
the fair value of your shares. You may dissent by voting against, abstaining or
not voting in favor of the respective merger or mergers. You must also write a
letter to Lake Community, if you are a Lake Community 
    


                                       6
<PAGE>   16
   
shareholder, to Roseville if you are a Roseville shareholder, or to Western
Sierra, if you are a Western Sierra shareholder requesting the purchase of your
dissenting shares and send the letter so that it is received within 30 days of
the date of mailing of a notice that will be sent to you announcing the approval
by shareholders of the merger or mergers. Valid dissenting shares of Lake
Community or Roseville will not be converted into shares of Western Sierra
common stock.
    

   
DIFFERENCES IN RIGHTS OF SHAREHOLDERS (PAGES 87-89)
    

The provisions of Western Sierra's Articles of Incorporation contain provisions
not included in the Articles of Incorporation of either Lake Community or
Roseville which may prevent a change in control of Western Sierra. Specifically,
Western Sierra's Articles of Incorporation have a provision which requires an
approving vote of 66 2/3% of the outstanding shares of Western Sierra common
stock for some business combinations.


   
                       Who Can Help Answer Your Questions

        If you have more questions about either the Western Sierra/Lake
  Community merger or the Western Sierra/Roseville merger you should contact:

                             Western Sierra Bancorp
                              4011 Plaza Goldorado
                         Cameron Park, California 95682
                     Attention: Gary Gall, President & CEO
                         Telephone No.: (530) 677-5694

                              Lake Community Bank
                              805 Eleventh Street
                              Lakeport, California
                  Attention: Douglas Nordell, President & CEO
                           Telephone: (707) 262-3310

                        Roseville 1st Community Bancorp
                             1801 Douglas Boulevard
                          Roseville, California 95661
                   Attention: Richard Seeba, President & CEO
                         Telephone No.: (916) 773-3333
    

                                       7
<PAGE>   17

   
                              Organizational Chart
                              --------------------
    

Companies before the mergers:

<TABLE>
<S>                          <C>                      <C>
     --------------          --------------           --------------
         Western                  Lake                 Roseville 1st
         Sierra                 Community                Community
         Bancorp                  Bank                    Bancorp
     --------------          --------------           --------------
         Western                                       Roseville 1st
     Sierra National                                     National
          Bank                                             Bank
     --------------                                   --------------
</TABLE>

Company after the Western Sierra/Lake Community merger and if the Western
Sierra/Roseville merger is not completed:

<TABLE>
<S>                          <C>                      <C>
                             --------------
                                 Western
                                 Sierra
                                 Bancorp
                             --------------
     --------------                                   --------------
         Western                                           Lake
     Sierra National                                     Community
          Bank                                             Bank
     --------------                                   --------------
</TABLE>

Company after the Western Sierra/Roseville merger and if the Western Sierra/Lake
Community merger is not completed:

<TABLE>
<S>                          <C>                      <C>
                             --------------
                                 Western
                                 Sierra
                                 Bancorp
                             --------------
     --------------                                   --------------
         Western                                       Roseville 1st
     Sierra National                                     National
          Bank                                             Bank
     --------------                                   --------------
</TABLE>

Company after the Western Sierra/Lake Community merger and the Western
Sierra/Roseville merger:

<TABLE>
<S>                          <C>                      <C>
                             --------------
                                 Western
                                 Sierra
                                 Bancorp
                             --------------
            -------------------------------------------------
     --------------          --------------           --------------
         Western                  Lake                 Roseville 1st
         Sierra                 Community                National
      National Bank               Bank                     Bank
     --------------          --------------           --------------
</TABLE>


                                       8
<PAGE>   18

SUMMARY OF FINANCIAL INFORMATION

   
The tables on pages 11, 12 and 13 summarize the historical financial results of
Western Sierra, Lake Community and Roseville. This information is provided to
show growth and earnings trends for each institution over the last five years
and the first nine months of 1998 and 1997. The next three tables summarize the
pro forma financial information shown at "Pro Forma Financial Statements" as if
the Western Sierra/Lake Community merger, the Western Sierra/Roseville merger
and both the Western Sierra/Lake Community merger and the Western
Sierra/Roseville merger had taken place at the beginning of each period
presented. The pro forma financial information combines the historical financial
information shown in the first three tables to reflect what the results might
have been had the institutions merged in each of the earlier periods presented.
The pro forma financial information does not take into consideration operational
efficiencies or additional expenses that might have occurred as a result of
combining the institutions including merger expenses. Managements of Western
Sierra and Lake Community believe its merger expenses in the Western Sierra/Lake
Community merger will be approximately $250,000 and $610,000, respectively.
Managements of Western Sierra and Roseville believe its merger expenses in the
Western Sierra/Roseville merger will be approximately $250,000 and $240,000,
respectively. In addition, this pro forma information is not necessarily
indicative of the results that would have been realized had the mergers been
completed at the beginning of the periods presented.
    

The financial information presented includes the following sections:

- -       Summary of Earnings - This section shows the significant components of
        earnings.

- -       Financial Position - This section shows significant assets, liabilities
        and shareholders' equity.

- -       Per Share Data - This section shows net income, dividends and
        shareholders' equity on a per share basis.

        Basic income per share reflects net income divided by the
        weighted-average shares of common stock outstanding during the period.
        Diluted income per share reflects the potential reduction in income per
        share that could occur if stock options currently outstanding were
        exercised and resulted in the issuance of stock that also shared in net
        income.

        Book value is determined by dividing total shareholders' equity by the
        number of shares outstanding at the end of the period presented.

        In the pro forma financial information tables, book value per share
        equivalent is determined by multiplying the book value of the combined
        institutions by the conversion ratio used in the merger. This represents
        the equivalent book value of the shares held by the acquired
        institution's shareholders.


   
                                       9
    
<PAGE>   19

   
- -       Selected Financial Ratios - This section includes ratios showing the
        return on average assets and return on average shareholders' equity,
        which are commonly used to evaluate the performance of companies.
    

        The ratios for the nine months ended September 30, 1998 and 1997 have
        been annualized.

This summary should be read with the Financial Statements and notes to the
Financial Statements included at the end of this joint proxy
statement/prospectus.


   
                                       10
    
<PAGE>   20

                        COMPARATIVE HISTORICAL FINANCIAL
                             DATA FOR WESTERN SIERRA
                                   (UNAUDITED)

   
<TABLE>
<CAPTION>
(Dollars in thousands,                      Nine
except per share numbers)                Months Ended                                  Year Ended
                                         September 30,                                December 31,
                                    ---------------------     ------------------------------------------------------------
                                      1998         1997         1997         1996         1995         1994         1993
                                    --------     --------     --------     --------     --------     --------     --------
<S>                                 <C>          <C>          <C>          <C>          <C>          <C>          <C>
SUMMARY OF EARNINGS:
Net interest income                 $  4,403     $  3,951     $  5,379     $  4,256     $  3,809     $  2,973     $  2,336
Provision for credit losses              250          193          243          458           80           36          130
Noninterest income                     1,842        1,343        2,037        1,692        1,227          657          833
Noninterest expense                    4,688        3,940        5,531        4,282        3,928        3,223        2,871
     Net income                     $    835     $    708     $  1,003     $    738     $    651     $    237     $    100

FINANCIAL POSITION
Total assets                        $135,281     $107,769     $108,860     $ 83,461     $ 71,050     $ 58,214     $ 50,107
Total net loans and leases            73,819       70,029       68,191       60,902       49,245       41,003       29,026
Total deposits                       123,729       98,400       98,709       74,927       63,106       52,907       45,853
Total shareholders' equity          $ 10,393     $  8,594     $  8,998     $  7,720     $  5,155     $  4,300     $  4,116

PER SHARE DATA:
Net income-basic                    $   0.86     $   0.73     $   1.08     $   0.97     $   0.96     $   0.39     $   0.16
Net income-diluted                  $   0.80     $   0.70     $   1.02     $   0.94     $   0.94     $   0.35     $   0.15
Book value per share                $  10.59     $   9.15     $   9.51     $   9.69     $   8.62     $   8.31     $   7.95

SELECTED FINANCIAL RATIOS:
Return on average assets                0.96%        0.97%        1.01%        0.97%        1.00%        0.44%        0.20%
Return on average
 shareholders' equity                  12.59%       12.03%       12.66%       12.20%       13.76%        5.63%        2.46%
</TABLE>
    


   
                                       11
    
<PAGE>   21

                        COMPARATIVE HISTORICAL FINANCIAL
                             DATA FOR LAKE COMMUNITY
                                   (UNAUDITED)

   
<TABLE>
<CAPTION>
(Dollars in thousands,                     Nine
except per share numbers)                Months Ended                              Year Ended
                                         September 30,                            December 31,
                                     -------------------     -------------------------------------------------------
                                      1998        1997        1997        1996        1995        1994        1993
                                     -------     -------     -------     -------     -------     -------     -------
<S>                                  <C>         <C>         <C>         <C>         <C>         <C>         <C>
SUMMARY OF EARNINGS:
Net interest income                  $ 2,923     $ 2,973     $ 3,998     $ 4,002     $ 3,946     $ 3,978     $ 3,869
Provision for credit losses              270         270         263         477         210         285         420
Noninterest income                       504         413         630         678         681         638         504
Noninterest expense                    2,657       2,408       3,222       3,524       3,301       2,980       2,613
     Net income                      $   353     $   450     $   766     $   476     $   781     $   866     $   889

FINANCIAL POSITION
Total assets                         $85,041     $85,034     $85,520     $82,502     $90,947     $76,217     $79,026
Total net loans and leases            53,777      53,753      53,210      52,091      52,839      48,765      46,245
Total deposits                        74,871      75,813      76,039      73,537      81,592      68,094      72,024
Total shareholders' equity           $ 9,433     $ 8,660     $ 8,660     $ 8,149     $ 8,066     $ 7,339     $ 6,686

PER SHARE DATA:
Net income-basic                     $  0.28     $  0.36     $  0.62     $  0.38     $  0.63     $  0.70     $  0.73
Net income-diluted                   $  0.27     $  0.35     $  0.59     $  0.36     $  0.59     $  0.66     $  0.66
Cash dividends declared              $  0.00     $  0.00     $  0.27     $  0.20     $  0.20     $  0.20     $  0.00
Book value per share                 $  7.27     $  6.98     $  6.98     $  6.57     $  6.50     $  5.92     $  5.49

SELECTED FINANCIAL RATIOS:
Return on average assets                0.56%       0.74%       0.93%       0.55%       0.97%       1.13%       1.15%
Return on average
 shareholders' equity                   5.25%       7.18%       9.05%       5.91%      10.08%      12.35%      14.24%
</TABLE>
    


   
                                       12
    
<PAGE>   22

                        COMPARATIVE HISTORICAL FINANCIAL
                               DATA FOR ROSEVILLE
                                   (UNAUDITED)

   
<TABLE>
<CAPTION>
(Dollars in thousands,                      Nine
except per share numbers)                Months Ended                                 Year Ended
                                         September 30,                                December 31,
                                    ---------------------     ------------------------------------------------------------
                                      1998         1997         1997         1996         1995         1994         1993
                                    --------     --------     --------     --------     --------     --------     --------
<S>                                 <C>          <C>          <C>          <C>          <C>          <C>          <C>
SUMMARY OF EARNINGS:
Net interest income                 $  1,687     $  1,646     $  2,231     $  1,697     $  1,376     $  1,206     $    952
Provision for credit losses              105          126          564           89           55           50           23
Noninterest income                       415          220          341          228          126          200           18
Noninterest expense                    1,594        1,175        1,693        1,330        1,145          971          818
     Net income                     $    242     $    339     $    182     $    302     $    198     $    305     $     75

FINANCIAL POSITION
Total assets                        $ 53,371     $ 47,947     $ 50,588     $ 38,708     $ 31,905     $ 26,387     $ 22,507
Total net loans and leases            30,796       31,945       34,125       27,091       22,725       18,595       17,180
Total deposits                        48,476       43,538       46,350       34,687       28,269       22,776       19,318
Total shareholders' equity          $  4,704     $  4,121     $  3,964     $  3,775     $  3,467     $  3,269     $  2,964

PER SHARE DATA:
Net income-basic                    $   0.75     $   1.06     $   0.57     $   0.94     $   0.62     $   0.95     $   0.23
Net income-diluted                  $   0.72     $   1.04     $   0.56     $   0.93     $   0.61     $   0.95     $   0.23
Book value per share                $  12.69     $  12.88     $  12.39     $  11.80     $  10.85     $  10.23     $   9.27

SELECTED FINANCIAL RATIOS:
Return on average assets                0.66%        1.05%        0.41%        0.86%        0.64%        1.17%        0.36%
Return on average
 shareholders' equity                   7.97%       11.45%        4.54%        8.23%        5.83%        9.79%        2.56%
</TABLE>
    


   
                                       13
    
<PAGE>   23

                            PRO FORMA FINANCIAL DATA
             BASED ON THE POOLING OF INTERESTS METHOD OF ACCOUNTING
                        WESTERN SIERRA AND LAKE COMMUNITY
                                   (UNAUDITED)

   
<TABLE>
<CAPTION>
(Dollars in thousands,
except per share numbers)                    Nine Months Ended                               Year Ended
                                               September 30,                                December 31,
                                          ---------------------     ------------------------------------------------------------
                                            1998         1997         1997         1996         1995         1994         1993
                                          --------     --------     --------     --------     --------     --------     --------
<S>                                       <C>          <C>          <C>          <C>          <C>          <C>          <C>
SUMMARY OF EARNINGS:
Net interest income                       $  7,326     $  6,924     $  9,377     $  8,258     $  7,755     $  6,951     $  6,205
Provision for credit losses                    520          463          506          935          290          321          550
Noninterest income                           2,346        1,756        2,667        2,370        1,908        1,295        1,337
Noninterest expense                          7,345        6,348        8,753        7,806        7,229        6,203        5,484
     Net income                           $  1,188     $  1,158     $  1,769     $  1,214     $  1,432     $  1,103     $    989

FINANCIAL POSITION
Total assets                              $220,322     $192,803     $194,380     $165,963     $161,997     $134,431     $129,133
Total net loans and leases                 127,596      123,782      121,401      112,993      102,084       89,768       75,271
Total deposits                             198,600      174,213      174,748      148,464      144,698      121,001      117,877
Total shareholders' equity                $ 19,826     $ 17,254     $ 17,658     $ 15,869     $ 13,221     $ 11,639     $ 10,802

PER SHARE DATA:
Net income-basic                          $   0.64     $   0.64     $   0.99     $   0.75     $   0.93     $   0.75     $   0.68
Net income-diluted                        $   0.61     $   0.61     $   0.94     $   0.72     $   0.90     $   0.70     $   0.62
Cash dividends declared                   $   0.00     $   0.00     $   0.19     $   0.15     $   0.17     $   0.18     $   0.00
Book value per share                      $  10.56     $   9.61     $   9.80     $   9.60     $   9.09     $   8.48     $   7.95
Book value per share equivalent-
Lake Community                            $   7.29     $   6.64     $   6.76     $   6.63     $   6.28     $   5.85     $   5.49

SELECTED FINANCIAL RATIOS:
Return on average assets                      0.79%        0.87%        0.97%        0.75%        0.98%        0.84%        0.78%
Return on average shareholders' equity        8.90%        9.52%       10.79%        8.60%       11.47%        9.82%        9.60%
</TABLE>
    


   
                                       14
    
<PAGE>   24

                            PRO FORMA FINANCIAL DATA
             BASED ON THE POOLING OF INTERESTS METHOD OF ACCOUNTING
                          WESTERN SIERRA AND ROSEVILLE
                                   (UNAUDITED)

   
<TABLE>
<CAPTION>
(Dollars in thousands,
except per share numbers)                    Nine Months Ended                              Year Ended
                                               September 30,                               December 31,
                                          ---------------------     ----------------------------------------------------------
                                            1998         1997         1997         1996         1995        1994        1993
                                          --------     --------     --------     --------     --------     -------     -------
<S>                                       <C>          <C>          <C>          <C>          <C>          <C>         <C>
SUMMARY OF EARNINGS:
Net interest income                       $  6,090     $  5,597     $  7,610     $  5,953     $  5,185     $ 4,179     $ 3,288
Provision for credit losses                    355          319          807          547          135          86         153
Noninterest income                           2,257        1,563        2,378        1,920        1,353         857         851
Noninterest expense                          6,282        5,115        7,224        5,612        5,073       4,194       3,689
     Net income                           $  1,077     $  1,047     $  1,185     $  1,040     $    849     $   542     $   175

FINANCIAL POSITION
Total assets                              $188,652     $155,716     $159,448     $122,169     $102,955     $84,601     $72,614
Total net loans and leases                 104,615      101,974      102,316       87,993       71,970      59,598      46,206
Total deposits                             172,205      141,938      145,058      109,614       91,375      75,683      65,171
Total shareholders' equity                $ 15,097     $ 12,715     $ 12,962     $ 11,495     $  8,622     $ 7,569     $ 7,080

PER SHARE DATA:
Net income-basic                          $   0.79     $   0.77     $   0.90     $   0.91     $   0.79     $  0.54     $  0.18
Net income-diluted                        $   0.75     $   0.75     $   0.86     $   0.88     $   0.78     $  0.51     $  0.17
Book value per share                      $  10.55     $   9.59     $   9.72     $   9.71     $   8.75     $  8.37     $  7.83
Book value per share
 equivalent-Roseville                     $  12.78     $  11.61     $  11.77     $  11.75     $  10.60     $ 10.13     $  9.48

SELECTED FINANCIAL RATIOS:
Return on average assets                      0.87%        1.00%        0.82%        0.93%        0.88%       0.68%       0.25%
Return on average shareholders' equity       11.14%       11.83%        9.93%       10.70%       10.45%       7.40%       2.50%
</TABLE>
    


   
                                       15
    
<PAGE>   25

                            PRO FORMA FINANCIAL DATA
             BASED ON THE POOLING OF INTERESTS METHOD OF ACCOUNTING
                  WESTERN SIERRA, LAKE COMMUNITY AND ROSEVILLE
                                   (UNAUDITED)

   
<TABLE>
<CAPTION>
(Dollars in thousands,
except per share numbers)                    Nine Months Ended                              Year Ended
                                               September 30,                                December 31,
                                          ---------------------     ------------------------------------------------------------
                                            1998         1997         1997         1996         1995         1994         1993
                                          --------     --------     --------     --------     --------     --------     --------
<S>                                       <C>          <C>          <C>          <C>          <C>          <C>          <C>
SUMMARY OF EARNINGS:
Net interest income                       $  9,013     $  8,570     $ 11,608     $  9,955     $  9,131     $  8,157     $  7,157
Provision for credit losses                    625          589        1,070        1,024          345          371          573
Noninterest income                           2,761        1,976        3,008        2,598        2,034        1,495        1,355
Noninterest expense                          8,939        7,523       10,446        9,136        8,374        7,174        6,302
     Net income                           $  1,430     $  1,497     $  1,951     $  1,516     $  1,630     $  1,408     $  1,064

FINANCIAL POSITION
Total assets                              $273,693     $240,750     $244,968     $204,671     $193,902     $160,818     $151,640
Total net loans and leases                 158,392      155,727      155,526      140,084      124,809      108,363       92,451
Total deposits                             247,076      217,751      221,098      183,151      172,967      143,777      137,195
Total shareholders' equity                $ 24,530     $ 21,375     $ 21,622     $ 19,644     $ 16,688     $ 14,908     $ 13,766

PER SHARE DATA:
Net income-basic                          $   0.64     $   0.68     $   0.90     $   0.76     $   0.85     $   0.76     $   0.58
Net income-diluted                        $   0.61     $   0.66     $   0.86     $   0.73     $   0.82     $   0.72     $   0.54
Cash dividends declared                   $   0.00     $   0.00     $   0.15     $   0.12     $   0.13     $   0.14     $   0.00
Book value per share                      $  10.54     $   9.79     $   9.87     $   9.62     $   9.06     $   8.47     $   7.88
Book value per share equivalent-
  Lake Community                          $   7.28     $   6.76     $   6.82     $   6.65     $   6.26     $   5.85     $   5.44
Book value per share
  equivalent-Roseville                    $  12.77     $  11.86     $  11.96     $  11.66     $  10.98     $  10.26     $   9.55

SELECTED FINANCIAL RATIOS:
Return on average assets                      0.77%        0.90%        0.86%        0.77%        0.92%        0.90%        0.72%
Return on average shareholders' equity        8.73%        9.90%        9.56%        8.52%       10.27%        9.81%        8.04%
</TABLE>
    


   
                                       16
    
<PAGE>   26

MARKET PRICES OF WESTERN SIERRA COMMON STOCK, LAKE COMMUNITY COMMON STOCK AND
ROSEVILLE COMMON STOCK

   
Western Sierra common stock is not listed on any stock exchange, nor is it
listed with NASDAQ. Western Sierra common stock does not have an active trading
market, and there is no established public market for Western Sierra common
stock. The following tables show the average of the last reported bid and asked
price per share for Western Sierra common stock and Lake Community common stock
on May 27, 1998, the trading day prior to the public announcement of the Western
Sierra/Lake Community merger and equivalent pro forma market value per share for
Lake Community common stock, and the average of the last reported bid and asked
price per share for Western Sierra common stock and Roseville common stock on
June 11, 1998, the trading day prior to the public announcement of the Western
Sierra/Roseville merger and equivalent pro forma market value per share for
Roseville common stock based on the price of Western Sierra common stock.
The equivalent pro forma market value per share of Lake Community common stock
and Roseville common stock, respectively, is calculated by multiplying the last
reported sales price per share of Western Sierra common stock multiplied by the
Lake Community conversion rate of .6905 and the Roseville conversion rate of
1.2110, respectively. See also, "Description of the Western Sierra/Lake
Community Merger--Lake Community Conversion Rate and Exchange of Shares and
Options" and "Description of the Western Sierra/Roseville Merger--Roseville
Conversion Rate and Exchange of Shares and Options."

<TABLE>
<CAPTION>
                                    Historical                       Equivalent Pro Forma
                               Market Value Per Share                    Market Value
                       ------------------------------------          --------------------
                       Lake Community        Western Sierra             Lake Community
                       --------------        --------------          --------------------
<S>                    <C>                   <C>                     <C>
May 27, 1998               $7.75                 $20.25                     $13.98
</TABLE>

<TABLE>
<CAPTION>
                                    Historical                       Equivalent Pro Forma
                               Market Value Per Share                    Market Value
                       ------------------------------------          --------------------
                         Roseville           Western Sierra                Roseville
                       --------------        --------------          --------------------
<S>                    <C>                   <C>                     <C>
June 11, 1998              $8.00                 $21.00                     $25.43
</TABLE>
    


                                       17
<PAGE>   27
                                  RISK FACTORS

MERGER-RELATED RISK FACTORS

   
DIFFICULTIES OF INTEGRATING THREE COMPANIES COULD HURT WESTERN SIERRA'S FUTURE
PERFORMANCE. The earnings, financial condition and prospects of Western Sierra
after the Western Sierra/Lake Community merger and/or the Western
Sierra/Roseville merger depend in large part on Western Sierra's ability to
successfully integrate the operations and management of Lake Community,
Roseville 1st National Bank and Western Sierra National Bank. We cannot
guarantee that Western Sierra will be able to effectively and profitably
integrate the operations and management of Lake Community, Roseville 1st
National Bank and Western Sierra National Bank. In addition, we cannot guarantee
that Western Sierra will be able to realize any revenue improvement or cost
savings as a result of the Western Sierra/Lake Community merger and/or the
Western Sierra/Roseville merger. Furthermore, any cost savings which are
realized could be offset by losses in revenues or other charges to earnings. In
addition, existing customers may not be retained by the combined company or
additional expenses could be incurred in retaining them. Failure to successfully
integrate the operations of the companies acquired could materially adversely
affect future results of operations of Western Sierra following the Western
Sierra/Lake Community merger and/or the Western Sierra/Roseville merger.
    

   
ADVERSE PERFORMANCE OF COMBINED LOAN PORTFOLIOS COULD HURT WESTERN SIERRA'S
FUTURE PERFORMANCE. Western Sierra's performance and prospects after the Western
Sierra/Lake Community merger and/or the Western Sierra/Roseville merger are
largely dependent on the performance of the combined loan portfolios of Lake
Community, Roseville 1st National Bank and Western Sierra National Bank, and
ultimately on the financial condition of their respective borrowers and other
customers. The existing loan portfolios of Lake Community, Roseville 1st
National Bank and Western Sierra National Bank differ to some extent in the
types of borrowers, industries and credits represented. In addition, there are
differences in the documentation, classifications, credit ratings and management
of the portfolios. Failure of Western Sierra's management to effectively manage
the combined loan portfolio could have a material adverse effect on the
business, financial condition and results of operations of Western Sierra after
the mergers. For information about Western Sierra's loan portfolio, see
"Description of Western Sierra--Western Sierra's Management's Discussion and
Analysis of Financial Condition and Results of Operations--Loan Portfolio." For
information about Lake Community's loan portfolio, see "Description of Lake
Community--Lake Community's Management's Discussion and Analysis of Financial
Condition and Results of Operations--Loan Portfolio." For information about
Roseville's loan portfolio, see "Description of Roseville--Roseville's
Management's Discussion and Analysis of Financial Condition and Results of
Operations--Loan Portfolio."
    

   
LOSS OF DEPOSITS AFTER THE MERGERS COULD HURT WESTERN SIERRA'S FUTURE
PERFORMANCE. The amount of deposits at any of Lake Community's and/or Roseville
1st National Bank's branch offices could decrease between the date of this joint
proxy statement/prospectus and the date the Western Sierra/Lake Community merger
and/or the Western Sierra/Roseville merger is completed, or at any time after
the mergers. If the amount of the deposits declines before or after the Western
Sierra/Lake Community merger and/or the Western Sierra/Roseville merger, Western
Sierra's return on equity may be reduced because the amount of leverage on
Western Sierra's capital will be less than currently anticipated by Western
Sierra's management. 
    


                                       18
<PAGE>   28
   
Although Western Sierra anticipates that as a result of the mergers, some of
Lake Community's and/or Roseville 1st National Bank's depositors will choose to
move their deposits elsewhere, achievement of the anticipated benefits of the
Western Sierra/Lake Community merger and/or the Western Sierra/Roseville merger
is dependent upon a substantial portion of the deposits to remain with Western
Sierra after each of the mergers. The market for financial services is extremely
competitive and we cannot guarantee that Lake Community's and/or Roseville 1st
National Bank's current deposit customers will remain depositors of Lake
Community and/or Roseville 1st National Bank after the Western Sierra/Lake
Community merger and/or the Western Sierra/Roseville merger. See "Risk
Factors--Risk Factors Related to Companies' Business and Operations--Financial
Services Business is Highly Competitive."
    

RISKS RELATED TO COMPANIES' BUSINESS AND OPERATIONS

   
DETERIORATION OF LOCAL ECONOMIC CONDITIONS COULD HURT PROFITABILITY OF BANKS.
The operations of Western Sierra, Lake Community and Roseville are primarily
located in Northern California and are concentrated along the Highway 50 and
Highway 80 corridors in the eastern Sacramento region and the Lake County area.
As a result of this geographic concentration, Western Sierra's, Lake Community's
and Roseville's results depend largely upon economic conditions in these areas.
Adverse local economic conditions in the eastern Sacramento region or Lake
County area may have a material adverse effect on the financial condition and
results of operations of Western Sierra, Lake Community and Roseville.
    

   
FINANCIAL SERVICES BUSINESS IS HIGHLY COMPETITIVE WHICH COULD ADVERSELY AFFECT
THE BANKS' EARNINGS AND PROFITABILITY AND THE STOCK PRICE OF WESTERN SIERRA. The
banking and financial services business in California generally, and Western
Sierra's, Lake Community's and Roseville's market areas specifically, is highly
competitive. Western Sierra, Lake Community and Roseville compete for loans,
deposits and customers for financial services with other commercial banks,
savings and loan associations, securities and brokerage companies, mortgage
companies, insurance companies, finance companies, money market funds, credit
unions and other nonbank financial service providers. Many of these competitors
are much larger in total assets and capitalization, have greater access to
capital markets and offer a broader array of financial services than Western
Sierra, Lake Community or Roseville. There can be no assurance that Western
Sierra, Lake Community or Roseville will be able to compete effectively in their
respective markets, and the results of operations of Western Sierra, Lake
Community and Roseville could be materially and adversely affected if
circumstances affecting the nature or level of competition change. See
"Information Concerning Western Sierra, Lake Community and
Roseville--Competition."
    

   
LOAN AND LEASE LOSSES COULD HURT BANK'S OPERATING RESULTS. A significant source
of risk for financial institutions like Western Sierra, Lake Community or
Roseville arises from the possibility that losses will be sustained because
borrowers, guarantors and related parties fail to perform in accordance with the
terms of their loans. Western Sierra, Lake Community and Roseville have adopted
underwriting and credit monitoring procedures and credit policies, including the
establishment and review of the allowance for credit losses, that each company's
respective management believes are appropriate to minimize this risk by
assessing the likelihood of nonperformance, tracking loan performance and
diversifying the respective credit portfolios. These policies and procedures,
however, may not prevent unexpected losses which could materially adversely
affect the respective companies' results of operations. For information about
Western Sierra's loan loss experience, see "Description of Western Sierra--
Western Sierra's
    


                                       19
<PAGE>   29
   
Management's Discussion and Analysis of Financial Condition and Results of
Operations--Summary of Loan Losses Experience." For information about Lake
Community's loan loss experience, see "Description of Lake Community--Lake
Community's Management's Discussion and Analysis of Financial Condition and
Results of Operations--Summary of Loan Loss Experience." For information about
Roseville's loan loss experience, see "Description of Roseville--Roseville's
Management's Discussion and Analysis of Financial Condition and Results of
Operations--Summary of Loan Losses Experience."

DETERIORATION OF REAL ESTATE MARKET COULD HURT BANKS' PERFORMANCE. At September
30, 1998, approximately 72% of Western Sierra's, Lake Community's and
Roseville's combined loans were secured by real estate. The ability of Western
Sierra to continue to originate real estate secured loans may be impaired by
adverse changes in local and regional economic conditions in the real estate
market, by increasing interest rates, or by acts of nature, including
earthquakes and flooding, either of which may cause uninsured damage and other
loss of value to real estate that secures Western Sierra's, Lake Community's and
Roseville's loans. Due to the concentration of real estate collateral, these
events could have a material adverse impact on the value of the collateral in
which case Western Sierra, Lake Community or Roseville may not recover adequate
value from liquidation of collateral to cover the carrying value of the loans.
For information about Western Sierra's real estate loans, see "Description of
Western Sierra--Western Sierra's Management's Discussion and Analysis of
Financial Condition and Results of Operations-- Distribution of Loans" and
"--Real Estate Loans." For information about Lake Community's real estate loans,
see "Description of Lake Community--Lake Community's Management's Discussion and
Analysis of Financial Condition and Results of Operations--Distribution of
Loans" and "--Real Estate Loans." For information about Roseville's real estate
loans, see "Description of Roseville--Roseville's Management's Discussion and
Analysis of Financial Condition and Results of Operations--Distribution of
Loans" and "--Real Estate Loans."
    

   
INTEREST RATE FLUCTUATIONS COULD HURT OPERATING RESULTS. The income of Western
Sierra, Lake Community and Roseville depends to a great extent on "interest rate
differentials" and the resulting net interest margins, that is, the difference
between the interest rates earned on their respective interest-earning assets
such as loans and investment securities, and the interest rates paid on their
respective interest-bearing liabilities such as deposits and borrowings. These
rates are highly sensitive to many factors which are beyond their control,
including general economic conditions and the policies of various governmental
and regulatory agencies, in particular, the Federal Reserve. Generally, each of
Western Sierra, Lake Community and Roseville are adversely affected by declining
interest rates. In addition, changes in monetary policy, including changes in
interest rates, influence the origination of loans, the purchase of investments
and the generation of deposits and affect the rates received on loans and
investment securities and paid on deposits, which could have a material adverse
effect on Western Sierra's business, financial condition and results of
operations. For a discussion of Western Sierra's interest rate sensitivity, see
"Description of Western Sierra--Western Sierra's Management's Discussion and
Analysis of Financial Condition and Results of Operations--Regulatory
Matters--Quantitative and Qualitative Disclosures About Market Risk." For a
discussion of Lake Community's interest rate sensitivity, see "Description of
Lake Community--Lake Community's Management's Discussion and Analysis of
Financial Condition and Results of Operations--Regulatory Matters--Quantitative
and Qualitative Disclosures About Market Risk." For a discussion of Roseville's
interest rate sensitivity, see "Description of Roseville--Roseville's
Management's Discussion and Analysis of
    


                                       20
<PAGE>   30

   
Financial Condition and Results of Operations--Regulatory Matters--Quantitative
and Qualitative Disclosures About Market Risk."

GOVERNMENT REGULATION AND LEGISLATION COULD HURT BUSINESS AND PROSPECTS OF
BANKS. Western Sierra, Lake Community and Roseville are subject to extensive
state and federal regulation, supervision and legislation which govern almost
all aspects of their respective operations. Their businesses are particularly
susceptible to being affected by the enactment of federal and state legislation
which may have the effect of increasing or decreasing the cost of doing
business, modifying permissible activities or enhancing the competitive position
of other financial institutions. These laws are subject to change from time to
time and are primarily intended for the protection of consumers, depositors and
the deposit insurance funds and not for the protection of shareholders of
Western Sierra, Lake Community or Roseville. Western Sierra cannot predict what
effect any presently contemplated or future changes in the laws or regulations
or their interpretations would have on its business and prospects, but it could
be material and adverse. For information about supervision and regulation of
banks, bank holding companies and legislation, see "Information Concerning
Western Sierra, Lake Community and Roseville."
    

   
LOSS OF KEY EMPLOYEES COULD HURT PERFORMANCE OF BANKS. Western Sierra, Lake
Community and Roseville are dependent upon the continued services of their
respective key employees. The loss of the services of any such employee, or the
failure of Western Sierra to attract and retain other qualified personnel, could
have a material adverse effect on Western Sierra's business, financial condition
and results of operations. Neither Western Sierra, Lake Community nor Roseville
maintains any life insurance for its benefit with respect to any of its officers
or directors, other than for payments required under salary continuation
agreements. For information about Western Sierra's key employees, see
"Description of Western Sierra--Management." For information about Lake
Community's key employees, see "Description of Lake Community--Management." For
information about Roseville's key employees, see "Description of
Roseville--Management."
    

   
ENVIRONMENTAL LIABILITY ASSOCIATED WITH COMMERCIAL LENDING COULD RESULT IN
LOSSES. In the course of business, Western Sierra, Lake Community and Roseville
have each acquired, and may in the future acquire, through foreclosure,
properties securing loans they have originated or purchased which are in
default. In commercial real estate lending, there is a risk that hazardous
substances could be discovered on these properties after acquisition by Western
Sierra, Lake Community or Roseville, as the case may be. In this event, Western
Sierra, Lake Community or Roseville, as the case may be, might be required to
remove these substances from the affected properties at its sole cost and
expense. The cost of this removal could substantially exceed the value of
affected properties, Western Sierra, Lake Community or Roseville, as the case
may be, may not have adequate remedies against the prior owner or other
responsible parties or could find it difficult or impossible to sell the
affected properties, the occurrence of any of which could have a material
adverse effect on Western Sierra's business, financial condition and operating
results.
    

   
THE BANKS RELY HEAVILY ON TECHNOLOGY AND COMPUTER SYSTEMS AND COMPUTER FAILURE
COULD RESULT IN LOSS OF BUSINESS AND ADVERSELY AFFECT THE STOCK PRICE OF WESTERN
SIERRA. Advances and changes in technology can significantly impact the business
and operations of Western Sierra, Lake Community and Roseville. Western Sierra,
Lake Community and Roseville face many challenges including the increased demand
for providing computer access to bank accounts and the systems to perform
banking transactions electronically. Western Sierra's, Lake Community's and
Roseville's ability
    

                                       21
<PAGE>   31
to compete depends on its ability to continue to adapt its technology on a
timely and cost-effective basis to meet these demands. In addition, their
respective businesses and operations are susceptible to negative impacts from
computer system failures, communication and energy disruption and unethical
individuals with the technological ability to cause disruptions or failures of
their respective data processing systems.

   
Many computer programs were designed and developed utilizing only two digits in
the date field, which means those computers are unable to recognize the year
2000 and the following years. This year 2000 issue creates risks for Western
Sierra, Lake Community and Roseville from unforseen or unanticipated problems in
its internal computer systems as well as from computer systems of the Federal
Reserve Bank of San Francisco, correspondent banks, customers and vendors.
Failures of these systems or untimely corrections could have a material adverse
impact on Western Sierra's, Lake Community's and Roseville's ability to conduct
their respective businesses and on their respective results of operations. For a
discussion of Western Sierra's Year 2000 readiness, see "Description of Western
Sierra--Western Sierra's Management's Discussion and Analysis of Financial
Condition and Results of Operations--Regulatory Matters--Year 2000 Compliance."
For a discussion of Lake Community's Year 2000 readiness, see "Description of
Lake Community--Lake Community's Management's Discussion and Analysis of
Financial Condition and Results of Operations--Regulatory Matters--Year 2000
Readiness Disclosures." For a discussion of Roseville's Year 2000 readiness, see
"Description of Roseville--Roseville's Management's Discussion and Analysis of
Financial Condition and Results of Operations--Regulatory Matters--Year 2000
Compliance."

LIMITED TRADING MARKET FOR WESTERN SIERRA COMMON STOCK COULD MAKE IT DIFFICULT
TO SELL SHARES AFTER MERGERS. There has been a limited trading market for
Western Sierra common stock, and no assurances can be given that an active
trading market for the stock will develop subsequent to either the Western
Sierra/Lake Community merger or the Western Sierra/Roseville merger. Western
Sierra common stock is not listed on any stock exchange and is not included for
quotation by NASDAQ. The limited trading market for Western Sierra common stock
may make the sale of shares of Western Sierra common stock issued in the Western
Sierra/Lake Community merger and the Western Sierra/Roseville merger difficult.
For information about the trading history of Western Sierra's Common Stock, see
"Description of the Capital Stock of Western Sierra, Lake Community and
Roseville."
    


                                       22
<PAGE>   32

   
                                  Introduction
    

   
We have made forward-looking statements in this joint proxy
statement/prospectus, including statements containing the words "believes,"
"anticipates," "intends," "expects," "considers" and words of similar import.
Forward-looking statements involve known and unknown risks, uncertainties and
other factors that may cause the actual results of the Western Sierra, Lake
Community or Roseville or the Western Sierra/Lake Community and Western
Sierra/Roseville mergers to be materially different from the future results
expressed or implied by forward-looking statements. These factors include, among
others, the factors discussed in the section entitled "Risk Factors."

Shareholders should not rely heavily on the forward-looking statements. Western
Sierra, Lake Community and Roseville do not have a duty to update any of the
forward-looking statements or to publicly announce the result of any changes to
any of the forward-looking statements included in this joint proxy
statement/prospectus.
    

We are sending you this joint proxy statement/prospectus for the solicitation of
proxies by the Boards of Directors of Western Sierra, Lake Community and
Roseville for use at their respective meetings of shareholders for the purpose
of considering and voting upon the matters set forth in their respective notices
of meeting.

The information contained in this joint proxy statement/prospectus concerning
Western Sierra has been furnished by Western Sierra and is its responsibility.
The information contained in this joint proxy statement/prospectus concerning
Lake Community has been furnished by Lake Community and is its responsibility.
The information contained in this joint proxy statement/prospectus concerning
Roseville has been furnished by Roseville and is its responsibility.

   
The mailing of this joint proxy statement/prospectus commenced on or about
February 19, 1999.

The completion of the Western Sierra/Lake Community merger is not dependent upon
the completion of the Western Sierra/Roseville merger and the completion of the
Western Sierra/Roseville merger is not dependent upon the completion of the
Western Sierra/Lake Community merger.

MATTERS TO BE CONSIDERED AT THE SHAREHOLDERS' MEETINGS

The Western Sierra Meeting and the Lake Community Meeting have been called so
the shareholders of Western Sierra and Lake Community can vote upon the Western
Sierra/Lake Community agreement. The Western Sierra/Lake Community merger will
be accomplished by the merger of Lake Community into LMC, a subsidiary of
Western Sierra. After the merger, Lake Community will become a subsidiary of
Western Sierra. In addition, the Western Sierra Meeting and the Roseville
Meeting have been called so the shareholders of Western Sierra and Roseville can
vote upon the Western Sierra/Roseville agreement. The Western Sierra/Roseville
merger will be accomplished by the merger of Roseville into Western Sierra.
After the merger, Roseville's wholly-owned subsidiary, Roseville 1st National
Bank, will become a subsidiary of Western Sierra.
    


                                       23
 
<PAGE>   33
RECORD DATES

   
WESTERN SIERRA. The close of business on February 11, 1999 has been fixed as the
Western Sierra record date for the determination of Western Sierra shareholders
entitled to notice of, and to vote at, the Western Sierra Meeting.

LAKE COMMUNITY. The close of business on February 11, 1999 has been fixed as the
Lake record date for the determination of Lake Community shareholders entitled
to notice of, and to vote at, the Lake Community Meeting.

ROSEVILLE. The close of business on February 11, 1999 has been fixed as the
Roseville record date for the determination of Roseville shareholders entitled
to notice of, and to vote at, the Roseville Meeting.
    

OUTSTANDING SECURITIES AND VOTING RIGHTS

   
WESTERN SIERRA. There were 981,448 shares of Western Sierra common stock
outstanding as of the Western Sierra record date held by approximately 325
record holders. Each holder of Western Sierra common stock can cast one vote for
each share of Western Sierra common stock held as of Western Sierra record date
on any matter presented for a vote of the shareholders at the Western Sierra
Meeting.
    

   
Approval of the Western Sierra/Lake Community merger requires the affirmative
vote of the holders of a majority of the outstanding shares of Western Sierra
common stock and approval of the Western Sierra/Roseville merger also requires
the affirmative vote of the holders of a majority of the outstanding shares of
Western Sierra common stock.

The effect of broker nonvotes is that these votes are not counted as being
voted; however these votes are counted for purposes of determining a quorum. The
effect of a vote of abstention on any matter is that the vote is not counted as
a vote for or against the matter, but is counted as an abstention.

LAKE COMMUNITY. There were 1,298,296 shares of Lake Community common stock
outstanding as of the Lake Community record date held by approximately 807
record holders. Each holder of Lake Community common stock can cast one vote for
each share of Lake Community common stock held as of the Lake Community record
date on any matter presented for a vote of the shareholders at the Lake
Community Meeting.

Approval of the Western Sierra/Lake Community merger requires the affirmative
vote of the holders of a majority of the outstanding shares of Lake Community
common stock.

The effect of broker nonvotes is that these votes are not counted as being
voted; however these votes are counted for purposes of determining a quorum. The
effect of a vote of abstention on any matter is that the vote is not counted as
a vote for or against the matter, but is counted as an abstention.

ROSEVILLE. There were 370,805 shares of Roseville common stock outstanding as of
the Roseville record date held by approximately 305 record holders. Each holder
of Roseville 
    


                                       24
<PAGE>   34
   
common stock can cast one vote for each share of Roseville common stock held as
of the Roseville record date on any matter presented for a vote of the
shareholders at the Roseville Meeting.
    

Approval of the Western Sierra/Roseville Merger requires the affirmative vote of
the holders of a majority of the outstanding shares of Roseville common stock.

The effect of broker nonvotes is that these votes are not counted as being
voted; however these votes are counted for purposes of determining a quorum. The
effect of a vote of abstention on any matter is that the vote is not counted as
a vote for or against the matter, but is counted as an abstention.

RECOMMENDATIONS OF THE BOARDS OF DIRECTORS

   
The Boards of Directors of Western Sierra and Lake Community have each
unanimously voted in favor of the proposals relating to the Western Sierra/Lake
Community merger, and the individual members of Lake Community's Board of
Directors have indicated that they will vote all shares of Lake Community common
stock as to which they have voting power "FOR" approval of the Western
Sierra/Lake Community agreement. Both the Boards of Directors of Western Sierra
and Lake Community recommend that their respective shareholders also vote "FOR"
approval of the Western Sierra/Lake Community agreement. See
"Introduction--Beneficial Ownership of Principal Shareholders and Management."
    

   
The Boards of Directors of Western Sierra and Roseville have also each
unanimously voted in favor of the proposals relating to the Western
Sierra/Roseville merger, and the individual members of Roseville's Board of
Directors have indicated that they will vote all shares of Roseville common
stock as to which they have voting power "FOR" approval of the Western
Sierra/Roseville agreement. Both the Board of Directors of Western Sierra and
Roseville recommend that their respective shareholders also vote "FOR" approval
of the Western Sierra/Roseville agreement. See "Introduction--Beneficial
Ownership of Principal Shareholders and Management."

As of the Western Sierra record date, the directors and executive officers of
Western Sierra held approximately 33.3% of the outstanding shares of Western
Sierra common stock entitled to vote at the Western Sierra Meeting. Each of
these directors and executive officers has indicated that they intend to vote
"FOR" approval of the Western Sierra/Lake Community agreement and "FOR" approval
of the Western Sierra/Roseville agreement.

As of the Lake Community record date, the directors and executive officers of
Lake Community held approximately 14.9% of the outstanding shares of Lake
Community common stock entitled to vote at the Lake Community Meeting and Lake
Community directors and former directors holding approximately 17.7% of these
shares have entered into director's agreements providing that they will each
vote "FOR" approval of the Western Sierra/Lake Community agreement. As a result,
holders of only 419,319 additional shares of Lake Community common stock are
needed to approve the Western Sierra/Lake Community agreement. See "Description
of the Western Sierra/Lake Community Merger--Interests of Certain Persons in the
Western Sierra/Lake Community Merger and Material Contracts with Lake Community
and its Affiliates."
    


                                       25
<PAGE>   35
   
As of the Roseville record date, the directors and executive officers of
Roseville held approximately 44.8% of the outstanding shares of Roseville common
stock entitled to vote at the Roseville Meeting and Roseville directors holding
approximately 44.5% of these shares have entered into director's agreements
providing that they will each vote "FOR" approval of the Western
Sierra/Roseville agreement. As a result, holders of only 20,288 additional
shares of Roseville common stock are needed to approve the Western
Sierra/Roseville agreement. See "Description of the Western Sierra/Roseville
Merger-- Interests of Certain Persons in the Western Sierra/Roseville Merger and
Material Contracts with Roseville and its Affiliates."
    

REVOCABILITY OF PROXIES

   
A Proxy for use at the Western Sierra Meeting, the Lake Community Meeting or the
Roseville Meeting, as the case may be, is enclosed. A shareholder executing and
returning a Proxy may revoke it at any time before the vote is taken by filing
with the Secretary of Western Sierra, the Secretary of Lake Community, or the
Secretary of Roseville, as the case may be, an instrument revoking it or a duly
executed Proxy bearing a later date. In addition, the powers of the proxyholders
will be suspended if the person executing the Proxy is present at the Western
Sierra Meeting, the Lake Community Meeting or the Roseville Meeting, as the case
may be, and elects to vote in person by advising the chairman of the Western
Sierra Meeting, the Lake Community Meeting or the Roseville Meeting, as the case
may be, of his or her election to vote in person, and voting in person at the
Western Sierra Meeting, the Lake Community Meeting or the 

Roseville Meeting, as the case may be. Subject to revocation or suspension, all
shares represented by a properly executed Proxy received in time for the Western
Sierra Meeting, the Lake Community Meeting or the Roseville Meeting, as the case
may be, will be voted by the proxyholders in accordance with the instructions
specified on the Proxy. If no directions are given to the contrary on the Proxy,
the shares of Western Sierra common stock and Lake Community common stock
represented by the Proxy will be voted "FOR" approval of the Western Sierra/Lake
Community agreement at their respective meetings and the shares of Western
Sierra common stock and Roseville common stock represented by the Proxy will be
voted "FOR" approval of the Western Sierra/Roseville agreement at their
respective meetings. It is not anticipated that any matters will be presented at
the Western Sierra Meeting, the Lake Community Meeting or the Roseville Meeting
other than as set forth in the respective notices of the meetings. If, however,
other matters are properly presented at any of the meetings, the Proxy will be
voted in accordance with the best judgment and discretion of the proxyholders.

COST OF SOLICITATION OF PROXIES

Western Sierra, Lake Community and Roseville shall each pay its own expenses of
preparing, assembling, printing and mailing this joint proxy
statement/prospectus and the material used in this solicitation of Proxies. It
is contemplated that Proxies will be solicited through the mail, but officers,
directors and regular employees of Western Sierra, Lake Community and Roseville
may solicit Proxies for their respective meetings personally. Although there is
no formal agreement to do so, Western Sierra, Lake Community and Roseville may
reimburse banks, brokerage houses and other custodians, nominees and fiduciaries
for their reasonable expenses in forwarding these proxy materials to their
principals. In addition, Western Sierra, Lake Community and Roseville may pay
for and utilize the services of individuals or companies not regularly employed
by any of them in the solicitation of Proxies for their respective meetings if
the Board of Directors of Western Sierra, Lake Community or Roseville determines
that this is advisable.
    

   
    

   
                                       26
    
<PAGE>   36

   
BENEFICIAL OWNERSHIP OF PRINCIPAL SHAREHOLDERS AND MANAGEMENT

The following tables show the beneficial ownership of shares of Western Sierra
common stock, Lake Community common stock and Roseville common stock held by the
principal shareholders and management of each corporation. The beneficial owner
of a security is a person who, directly or indirectly, through any contract
arrangement, understanding, relationship, or otherwise has or shares: (a) voting
power which includes the power to vote, or to direct the voting of, the security
or (b) investment power which includes the power to dispose, or to direct the
disposition, of the security. The beneficial owner of a security is also a
person who, directly or indirectly, creates or uses a trust, proxy, power of
attorney, pooling arrangement or any other contract, arrangement, or device with
the purpose or effect of divesting himself of beneficial ownership of a security
or preventing the vesting of beneficial ownership. Beneficial ownership is
determined in accordance with the rules of the SEC and generally includes voting
or investment power over the securities. Shares subject to options presently
exercisable or exercisable within 60 days of February 1, 1999 are deemed to be
beneficially owned by the holder but are not treated as outstanding for
computing the beneficial ownership of any other person.


WESTERN SIERRA PRINCIPAL SHAREHOLDERS. Western Sierra's Board of Directors knows
of no person who owns beneficially more than 5% of the outstanding shares of
Western Sierra common stock as of February 1, 1999 except for the persons in the
following table:

<TABLE>
<CAPTION>
                                                                Western Sierra Common Stock
                                                                    Beneficially Owned
                                                               -----------------------------
                                  Relationship                 Number of            Percent
Name and Address(1)            with Western Sierra              Shares              of Class
- -------------------           ----------------------           ---------            --------
<S>                           <C>                              <C>                   <C>
Robert G. Albrecht            Director                          79,700                8.0%
Gary D. Gall                  Director and CEO                  55,770                5.6%
Osvaldo I. Scariot            Director                          86,334                8.8%
Joseph A. Surra               Director and Chairman             51,425                5.2%
Patrick Hopper                Shareholder                       87,728                9.0%
Harold Prescott               Director                          49,587                5.0%
- -------------------
</TABLE>

(1)   Messrs. Albrecht's, Gall's, Scariot's, Surra's and Prescott's address is
      c/o Western Sierra Bancorp, 4011 Plaza Goldorado Circle, Cameron Park,
      California 95682. Mr. Hopper's address is 2624 Pebble Gold Avenue,
      Henderson, Nevada 89014.


WESTERN SIERRA MANAGEMENT. The following table shows as of February 1, 1999, the
number of shares of Western Sierra common stock beneficially owned by each
director and named executive officer of Western Sierra and by all Western Sierra
directors and executive officers as a group.
    


   
                                       27
    

<PAGE>   37
   
<TABLE>
<CAPTION>
                                                  Western Sierra Common Stock            Percent
Beneficial Owner                                      Beneficially Owned               of Class(1)
- ----------------                                  ---------------------------          -----------
<S>                                               <C>                                  <C>
Directors and Named Executive Officers:
- ---------------------------------------
Robert G. Albrecht                                          79,700(2)                      8.0
Charles W. Bacchi                                            7,181(3)                        *
Barbara L. Cook                                              6,477                           *
William J. Fisher                                            8,487(4)                        *
Gary D. Gall                                                55,770(5)                      5.6
Richard L. Golemon                                          43,741(6)                      4.4
Harold S. Prescott, Jr                                      49,529(7)                      5.0
Darol B. Rasmussen                                          43,466(8)                      4.4
Osvaldo I. Scariot                                          86,334(9)                      8.8
Joseph A. Surra                                             51,425(10)                     5.2
Stephanie M. Marsh                                           4,412(11)                       *

All Directors and Executive
Officers as a Group (12 in all)                            390,232(12)                    37.4
</TABLE>
    

   
- ----------

 *    Less than 1%.

(1)   Includes shares subject to options held by the directors and executive
      officers that are exercisable within 60 days of February 1, 1999. These
      are treated as issued and outstanding for the purpose of computing the
      percentages of each director, named executive officer and the directors
      and executive officers as a group, but not for the purpose of computing
      the percentage of class of any other person.

(2)   Mr. Albrecht has shared voting and investment powers as to 62,061 of these
      shares. The amount includes 17,639 shares acquirable by exercise of stock
      options.

(3)   Mr. Bacchi has shared voting and investment powers as to 3,217 of these
      shares. The amount includes 3,964 shares acquirable by exercise of stock
      options.

(4)   Mr. Fisher has shared voting and investment powers as to 3,823 of these
      shares. The amount includes 4,664 shares acquirable by exercise of stock
      options.

(5)   Mr. Gall has shared voting and investment powers as to 25,316 of these
      shares as to which 24,021 shares were owned by Mr. Gall as co-trustee for
      Western Sierra National Bank's KSOP and Western Sierra's Employee Stock
      Ownership Plan. The amount includes 16,962 shares acquirable by exercise
      of stock options.

(6)   Mr. Golemon has shared voting and investment powers as to 24,021 of these
      shares as co-trustee for Western Sierra National Bank's KSOP and Western
      Sierra's Employee Stock Ownership Plan. The amount includes 4,664 shares
      acquirable by exercise of stock options.

(7)   Mr. Prescott has shared voting and investment powers as to 43,725 of these
      shares. The amount includes 4,664 shares acquirable by exercise of stock
      options.

(8)   Dr. Rasmussen has shared voting and investment powers as to 11,760 of
      these shares.

(9)   Mr. Scariot has shared voting and investment powers as to all of these
      shares.

(10)  Mr. Surra has shared voting and investment powers as to 46,761 of these
      shares as to which 24,021 shares were owned by Mr. Surra as co-trustee for
      Western Sierra National Bank's KSOP and Western Sierra's Employee Stock
      Ownership Plan. The amount includes 4,664 shares acquirable by exercise of
      stock options.

                  (Footnotes continued on the following page.)
    


                                       28
<PAGE>   38

(11)  Ms. Marsh has shared voting and investment powers as to 622 of these
      shares. The amount includes 3,532 shares acquirable by exercise of stock
      options.

(12)  The amount includes 62,073 shares acquirable by exercise of stock options.

As of February 1, 1999, no director or executive officer of Western Sierra owned
any shares of Lake Community common stock or Roseville common stock. However,
Western Sierra's Employee Stock Ownership Plan, of which Messrs. Gall, Golemon
and Surra have shared voting and investment powers, purchased 1,000 shares of
Lake Community common stock.

   
LAKE COMMUNITY PRINCIPAL SHAREHOLDERS. Lake Community's Board of Directors knows
of no person who owns beneficially more than 5% of the outstanding shares of
Lake Community common stock as of February 1, 1999 except for the persons in the
following table:
    

<TABLE>
<CAPTION>
                                                                          Lake Community
                                                                           Common Stock
                                                                        Beneficially Owned
                                                                    --------------------------
                                             Relationship            Number of        Percent
          Name and Address                with Lake Community         Shares          of Class
- ------------------------------------      -------------------       ---------         --------
<S>                                       <C>                       <C>               <C>
Financial Institutions Partners II,           Shareholder           116,943(1)          9.0%
 L.P. and Hovde Capital, L.L.C.
1629 Colonial Parkway
Inverness, Illinois 60067
</TABLE>

- ----------

(1)   Based on information contained in an acquisition statement, as amended,
      under Section 13(d) of the Securities Exchange Act of 1934 dated February
      23, 1998 received by Lake Community from Financial Institutions Partners
      II, L.P. and Hovde Capital, L.L.C., which acquisition statement states
      that Hovde Capital, L.L.C. is the general partner of Financial
      Institutions Partners II, L.P.


                                       29
<PAGE>   39

LAKE COMMUNITY MANAGEMENT. The following table shows as of February 1, 1999, the
number of shares of Lake Community common stock beneficially owned by each
director and named executive officer and by all directors and executive officers
as a group.

<TABLE>
<CAPTION>
                                                    Lake Community
                                                     Common Stock             Percent
Beneficial Owner                                  Beneficially Owned        of Class(1)
- ----------------                                  ------------------        -----------
<S>                                               <C>                       <C>
Directors and Named Executive Officers:
- ---------------------------------------
Donald L. Browning, M.D.                               52,800(2)                4.1%
F. Ilene Dumont                                         2,000                     *
John Helms                                             52,650                   4.1%
Billie L. Holmes                                       52,000(3)                4.0%
May Noble                                              44,280(2)                3.4%
Douglas A. Nordell                                          0                     *
Howard "Bud" Van Lente                                 36,000(2)                2.7%

All Directors and Executive Officers
 as a Group (8 in all)                                271,456(4)               19.7%
</TABLE>

- ----------

*     Less than 1%.

(1)   Includes shares subject to options held by the directors and executive
      officers that are exercisable within 60 days of February 1, 1999. These
      are treated as issued and outstanding for the purpose of computing the
      percentages of each director, named executive officer and the directors
      and executive officers as a group, but not for the purpose of computing
      the percentage of class of any other person.

(2)   Includes 20,000 shares acquirable upon the exercise of stock options.

(3)   Includes 5,000 shares acquirable upon the exercise of stock options.

(4)   Includes 17,850 shares and 60,000 shares, respectively, subject to
      presently exercisable employee and nonemployee options granted pursuant to
      Lake Community's 1984 Stock Option Plan.

As of February 1, 1999, no director or principal officer of Lake Community owned
any shares of Western Sierra common stock.


                                       30
<PAGE>   40
ROSEVILLE PRINCIPAL SHAREHOLDERS. Roseville's Board of Directors knows of no
person who owns beneficially more than 5% of the outstanding shares of Roseville
Common stock as of February 1, 1999, except for the persons in the following
table:

   
<TABLE>
<CAPTION>
                                                                Roseville Common Stock
                                                                  Beneficially Owned
                                                               -------------------------
                                                               Number of        Percent
Name and Address(1)        Relationship with Roseville          Shares          of Class
- -----------------------    ---------------------------         ---------        --------
<S>                        <C>                                 <C>             <C>
Ernest E. Johnson, M.D.    Director                             24,428             6.6%
Kenneth Leung              Director                             20,000             5.4%
Thomas Manz                Chairman of the Board                39,301            10.6%
Douglas A. Nordell         Executive Vice President             21,204             5.7%
Richard C. Seeba           President and Director               51,509            13.9%
</TABLE>
    
- ----------

   
(1)   Dr. Johnson's and Messrs. Leung's, Manz's, Nordell's and Seeba's address
      is c/o Roseville 1st Community Bancorp, 1801 Douglas Boulevard, Roseville,
      California 95661.

ROSEVILLE MANAGEMENT. The following table shows as of February 1, 1999, the
number of shares of Roseville common stock beneficially owned by each director
and named executive officer and by all directors and executive officers as a
group.

<TABLE>
<CAPTION>
                                                    Roseville Common Stock           Percent
Beneficial Owner                                      Beneficially Owned           of Class(1)
- ----------------                                    ----------------------         -----------
<S>                                                 <C>                            <C>
Directors and Named Executive Officers(2):
- ------------------------------------------
Patrick I. Abare                                            17,064                     4.6%
Stephen F. Caulkins                                          8,105(3)                  2.2%
D. Mark Davis                                                2,097                       *
Kirk Doyle                                                  10,704                     2.9%
Howard "Skip" Jahn                                          14,767                     4.0%
Ernest E. Johnson, M.D.                                     24,428                     6.6%
Kenneth Leung                                               20,000                     5.4%
Thomas Manz                                                 39,301(4)                 10.6%
James Otto                                                   8,656                     2.3%
Randall Scagliotti, DVM                                     15,266                     4.1%
Richard C. Seeba                                            51,509(5)                 13.9%

All Directors and Executive(2)                             202,319(6)                 54.6%
 Officers as a Group (13 in all)
</TABLE>

- ----------

 *    Less than 1%.

(1)   Includes shares subject to options held by the directors and executive
      officers that are exercisable within 60 days of February 1, 1999. These
      are treated as issued and outstanding for the purpose of computing the
      percentages of each director, named executive officer and the directors
      and executive officers as a group, but not for the purpose of computing
      the percentage of class of any other person. 

                    (Footnotes continued on following page.)
    

                                       31
<PAGE>   41
   
(2)   For purposes of this paragraph, the term "named executive officer" means
      those officers who receive in excess of $100,000 per year in salary and
      bonus and the term "executive officer" means the President/Chief Executive
      Officer, the Executive Vice President/Chief Operating Officer and the
      Senior Vice President/Chief Financial Officer.

(3)   Mr. Caulkins' amount includes 6,500 shares acquirable by exercise of stock
      options.

(4)   Mr. Manz has shared voting and investment powers as to 16,391 shares which
      he votes as a trustee of the Roseville 1st National Bank 401(k) Plan. The
      amount also includes 4,500 shares acquirable by exercise of stock options.

(5)   Mr. Seeba has shared voting and investment powers as to 16,391 shares
      which he votes as a trustee of the Roseville 1st National Bank 401(k)
      Plan. The amount also includes 3,000 shares acquirable by exercise of
      stock options.

(6)   The amount includes 20,000 shares acquirable by exercise of stock options.

As of February 1, 1999, no director or executive officer of Roseville owned any
shares of Western Sierra common stock.

PRINCIPAL SHAREHOLDERS OF WESTERN SIERRA FOLLOWING THE WESTERN SIERRA/LAKE
COMMUNITY MERGER. The Boards of Directors of Western Sierra and Lake Community
anticipate that if the Western Sierra/Lake Community merger is completed, no one
will own beneficially more than 5% of Western Sierra common stock. See
"Description of the Western Sierra/Lake Community Merger--Lake Community
Conversion Rate and Exchange of Shares and Options."

PRINCIPAL SHAREHOLDERS OF WESTERN SIERRA FOLLOWING THE WESTERN SIERRA/ROSEVILLE
MERGER. The Boards of Directors of Western Sierra and Roseville anticipate that
if the Western Sierra/Roseville merger is completed, Robert G. Albrecht, Osvaldo
I. Scariot and Patrick Hopper will own beneficially more than 5% of Western
Sierra common stock. See "Description of the Western Sierra/Roseville
Merger--Roseville Conversion Rate and Exchange of Shares and Options."
    

PRINCIPAL SHAREHOLDERS OF WESTERN SIERRA FOLLOWING THE WESTERN SIERRA/LAKE
COMMUNITY MERGER AND THE WESTERN SIERRA/ROSEVILLE MERGER. The Boards of
Directors of Western Sierra, Lake Community and Roseville anticipate that if
both the Western Sierra/Lake Community merger and the Western Sierra/Roseville
merger are completed, no one will own beneficially more than 5% of Western
Sierra common stock.


                                       32
<PAGE>   42
   
                                 Description of
                    the Western Sierra/Lake Community Merger
    

GENERAL

   
This section of the joint proxy statement/prospectus contains information
furnished by the Boards of Directors of Western Sierra and Lake Community in
their respective solicitations of Proxies for the Western Sierra Meeting and the
Lake Community Meeting to approve the Western Sierra/Lake Community agreement.
The Western Sierra/Lake Community agreement sets out the terms of the merger of
Lake Community with LMC, the wholly-owned subsidiary of Western Sierra.
    

   
The Boards of Directors of Western Sierra and Lake Community are asking their
respective shareholders to vote upon the Western Sierra/Lake Community
agreement. Under the terms of the Western Sierra/Lake Community agreement, Lake
Community will be merged with LMC and Lake Community shall be the surviving
corporation of the Western Sierra/Lake Community merger. Upon completion of the
Western Sierra/Lake Community merger, each share of Lake Community common stock,
other than shares held by shareholders who exercise and perfect dissenters'
rights, shall be converted into the right to receive from Western Sierra the
Lake Community conversion rate of .6905 shares of Western Sierra common stock.
See "Description of the Western Sierra/Lake Community Merger--Lake Community
Conversion Rate and Exchange of Shares and Options." As a result of the Western
Sierra/Lake Community merger, Lake Community will become a wholly-owned
subsidiary of Western Sierra.
    

   
A copy of the Western Sierra/Lake Community agreement is attached to this joint
proxy statement/prospectus as Exhibit I and incorporated in this joint proxy
statement/prospectus by this reference.
    

BACKGROUND AND REASONS FOR THE WESTERN SIERRA/LAKE COMMUNITY MERGER

   
WESTERN SIERRA'S ANALYSIS. During the past two years, Western Sierra has been
expanding its services to the businesses and residents of El Dorado and Placer
Counties through its branch operations and of Sacramento County through its loan
production office. During February 1998, Western Sierra had preliminary
discussions with Lake Community regarding a potential merger of the two
institutions. After consideration, Western Sierra's Board of Directors and
Senior Management determined that the merger of Lake Community with LMC provided
an opportunity for Western Sierra to serve the Lake County market area through
the acquisition of a bank with offices in Lakeport and Kelseyville. In addition,
Western Sierra's Board of Directors believes the Western Sierra/Lake Community
merger will help Western Sierra to achieve increased benefits through asset
diversification; will provide an opportunity to increase the number of
outstanding shares and liquidity of Western Sierra common stock; and will be
accretive to the shareholders of
    


                                       33
<PAGE>   43
   
Western Sierra. Western Sierra's Board of Directors believes that having more
shareholders and more outstanding shares of Western Sierra common stock will
increase the liquidity of the shares of Western Sierra common stock owned by
Western Sierra and Lake Community shareholders after the Western Sierra/Lake
Community merger is completed. In addition, management of Western Sierra
estimated that the Western Sierra/Lake Community merger would be accretive to
the shareholders based upon an estimated increase in earnings per share of
10-15% per year, based upon historical experience of Western Sierra and Lake
Community and cost savings resulting from the combination of data processing,
reduction in professional fees, reduction in personnel costs and other
noninterest expense. This estimate was based on an internal analysis prepared by
Western Sierra's management and the actual results may vary significantly for
numerous reasons, including the factors set forth in "Risk Factors" at page 18.
    

The Western Sierra Board of Directors also considered the advantages of
remaining independent and the potential problems of management incompatibility,
the complexity of the data processing conversion and inability to combine the
operation of Lake Community and Western Sierra.

   
After discussions between Western Sierra and Lake Community, the parties
executed a Confidentiality Agreement dated February 27, 1998. On May 27, 1998,
Western Sierra and Lake Community entered into the Western Sierra/Lake Community
agreement. Under the terms of the agreement, Lake Community will become a
wholly-owned bank subsidiary of Western Sierra. Western Sierra currently has no
plans to merge Lake Community with either Western Sierra National Bank or
Roseville 1st National Bank.

The Board of Directors of Western Sierra believes the Western Sierra/Lake
Community merger to be in the best interests of Western Sierra, its shareholders
and banking customers. The Board of Directors of Western Sierra expects Western
Sierra, following the Western Sierra/Lake Community merger, to be stronger in
terms of capital, management, growth opportunities and profitability than is
either corporation at present. In addition, the Western Sierra/Lake Community
merger will enable Western Sierra to acquire new technologies that would
otherwise be cost prohibitive. These new technologies will improve customer
service and increase the efficiency of Western Sierra and Lake Community.
    

   
Western Sierra has been profitable and has shown strong asset growth over the
past several years. Following the Western Sierra/Lake Community merger, Lake
Community will have the advantage of the consolidation and centralization of
certain management functions and certain resulting economies of scale.
Management of Western Sierra estimated that the costs savings as a result of the
Western Sierra/Lake Community merger would be approximately 18-20% of Lake
Community's noninterest expense based upon reduction in personnel costs,
consolidation of data processing and reduction in professional fees and other
noninterest expense which are normal for bank merger transactions. This estimate
was based on an internal analysis prepared by Western Sierra's management and
the actual results may vary significantly for numerous reasons, including the
factors set forth in "Risk Factors" at page 18. Furthermore, it is believed that
the Western Sierra/Lake Community merger will result in a bank which will be a
strong and viable independent financial institution better able to compete with
the major banks in the areas now served by Lake Community.
    

LAKE COMMUNITY'S ANALYSIS. During the fourth quarter of 1997 and the first
quarter of 1998, Lake Community was contacted at various times by three
financial institutions, including


                                       34
<PAGE>   44
Western Sierra, interested in acquiring Lake Community. To conduct preliminary
discussions, the Board of Directors of Lake Community formed a committee
composed of Chairman of the Board, Howard ("Bud") Van Lente, President, Gary
Nordine, and Director, John Helms. Of the three institutions, only Western
Sierra presented a formal proposal. The Lake Community Board of Directors then
engaged The Bank Stock Group, Inc. as its financial advisor to assist in
evaluating the Western Sierra proposal. A confidentiality agreement was executed
by the parties on February 7, 1998 and extensive negotiations with Western
Sierra commenced. Western Sierra's proposal was the only formal proposal
received and was given consideration by the full Board of Directors of Lake
Community based on a number of aspects favorable to the shareholders of Lake
Community, its customers, and the community as a whole. The predominant and
deciding factors were:

1.    retention of the ability to operate as a community bank rather than a
      branch of a much larger regional bank;

2.    the added services and products available to Lake Community's customers;

3.    shareholder stock liquidity; and

4.    retention, to the greatest degree possible, of qualified, dedicated bank
      staff and management.

   
Meetings between Lake Community's Merger Committee and Western Sierra's senior
management and Board of Directors brought out the similarity of banking and
customer attention philosophies which the two banking entities share.

No additional merger proposals were sought based on the above merger advantages.
    

   
On May 27, 1998, Western Sierra and Lake Community entered into the Western
Sierra/Lake Community agreement. Present at the Lake Community Board of
Directors meeting were representatives of Lake Community's legal counsel,
Lillick & Charles LLP and Lake Community's financial advisor, The Banc Stock
Group, Inc. At the meeting the representative of Banc Stock Group orally
presented its fairness opinion.
    

   
In determining to approve the Western Sierra/Lake Community agreement and
recommend that Lake Community's shareholders approve and authorize the Western
Sierra/Lake Community agreement, the Lake Community Board of Directors consulted
with Lake Community's senior management, its financial advisor, as well as its
legal counsel, and considered the following material factors:
    

   
- -     the increased liquidity to be provided to Lake Community's shareholders by
      receiving shares of Western Sierra common stock in exchange for their
      shares of Lake Community common stock. The Board of Directors of Lake
      Community believed that because there would be a larger number of
      shareholders and outstanding shares of Western Sierra after the Western
      Sierra/Lake Community merger, the shareholders of Lake Community would
      have the benefit of a more active market for their shares after completion
      of the Western Sierra/Lake Community merger;
    


                                       35
<PAGE>   45
- -     the economic conditions and prospects for the markets in which Lake
      Community operates, and competitive pressures in the financial services
      industry in general and the banking industry in particular;

- -     the enhancement of Lake Community's competitiveness and its ability to
      serve its customers, depositors, creditors, other constituents and the
      communities in which it operates as a result of a business combination
      with another Northern California bank holding company, like Western
      Sierra;

- -     information concerning the business, results of operations, asset quality
      and financial condition of Lake Community and Western Sierra on a
      stand-alone and combined basis, and the future growth prospects of Lake
      Community and Western Sierra following the Western Sierra/Lake Community
      merger;

   
- -     the cost savings and operational synergies which the management of Lake
      Community believes may be achieved as a result of the Western Sierra/Lake
      Community merger. Based upon a cost analysis prepared by Western Sierra
      and reviewed and agreed to by Lake Community it was anticipated the
      Western Sierra/Lake Community merger would result in a cost savings of
      18-20%;
    

- -     an assessment that, in the current economic environment, expansion through
      acquisition by another financial institution is most economically
      advantageous to Lake Community's shareholders when compared to other
      alternatives like de novo branch openings or branch acquisitions;

   
- -     the terms and conditions of the Western Sierra/Lake Community agreement
      and related agreements;
    

   
- -     the potential downsides of the Western Sierra/Lake Community merger. These
      were principally the possible adverse effect on employees of Lake
      Community and the potential adverse effect on Lake Community's customers
      of Lake Community being a subsidiary of an out of area parent.
    

- -     Banc Stock Group's analysis of the financial condition, results of
      operations, business, prospects and stock price of Lake Community and
      comparison of Lake Community to other banks and bank holding companies
      operating in its industry;

- -     an analysis of the terms of other acquisitions in the banking industry;

   
- -     the opinion of Banc Stock Group to the effect that, as of the date of the
      opinion, the Lake Community conversion rate is fair, from a financial
      point of view, to the holders of Lake Community common stock;
    

- -     the expectation that the Western Sierra/Lake Community merger will
      constitute a tax-free reorganization for federal income tax purposes; and

- -     the expectation that the Western Sierra/Lake Community merger will be
      treated as a pooling of interests for accounting purposes.


                                       36
<PAGE>   46
The above discussion of the factors considered by the Lake Community Board of
Directors is not intended to be exhaustive. In view of the variety and nature of
the factors considered by the Lake Community Board of Directors, the Lake
Community Board of Directors did not find it practicable to assign relative
weights to the specific factors considered in reaching its decision.

The Board of Directors of Lake Community believes the Western Sierra/Lake
Community merger to be in the best interests of Lake Community, its shareholders
and banking customers. Following the Western Sierra/Lake Community merger, Lake
Community will have the advantage of the consolidation and centralization of
certain management functions and certain resulting economies of scale.
Furthermore, it is believed that the Western Sierra/Lake Community merger will
result in a bank which will be a strong and viable independent financial
institution better able to compete with the major banks in the areas now served
by Lake Community.

LAKE COMMUNITY CONVERSION RATE AND EXCHANGE OF SHARES AND OPTIONS

   
LAKE COMMUNITY CONVERSION RATE. Each share of Lake Community common stock which
is outstanding immediately prior to the Western Sierra/Lake Community merger,
other than shares to which its holders have exercised and perfected dissenters'
rights, will automatically be canceled and will be converted into the right to
receive from Western Sierra the Lake Community conversion rate of .6905 shares
of Western Sierra common stock for each share of Lake Community common stock.
    

   
The Boards of Directors of Western Sierra and Lake Community determined the 
formula for calculating the Lake Community conversion rate in an arms length
negotiation. Specifically, the formula used a multiplier of 1.75 times Lake 
Community's shareholders' equity as of November 30, 1998, as adjusted below, 
and the average market value of a share of Western Sierra common stock for the 
month of November 1998. The calculation of Lake Community conversion rate is as 
follows:

1. The Boards of Directors of Western Sierra and Lake Community determined that 
   the following deductions, to include the tax effect, should be made to the
   November 30, 1998 net income and shareholders' equity of Lake Community:

   - estimated merger expenses of $78,615;

   - write down of the carrying value of properties held as other real estate 
     totaling $239,000;

   - severance costs totaling $56,000; and

   - costs related to the surrender of life insurance policies totaling $7,253.

   After these adjustments, including the related tax effect, net income for
   Lake Community for the eleven month period ended November 30, 1998 was
   determined to be $143,402. Excluding the unrealized gain on available-for-
   sale investment securities and net income for the eleven month period ended
   November 30, 1998, the shareholders' equity of Lake Community at November 30,
   1998 totaled $8,916,080. The net income was then added to this number for a
   total shareholders' equity of $9,059,482.

2. The adjusted Lake Community shareholders' equity account was then multiplied 
   by 1.75 for a total of $15,854,093.

3. The new total of $15,854,093 was then divided by the 1,298,296 shares of
   Lake Community common stock outstanding as of November 30, 1998, which
   calculated the Lake Community per share merger price of $12.2115.

4. The Lake Community per share merger price of $12.2115 was then divided by the
   average trading price per share of Western Sierra common stock for the month
   of November 1998 of $17.6849. This calculation resulted in the determination
   of the Lake Community conversion rate of .6905 shares of Western Sierra
   common stock.
    

   
Assuming the holders of all of the shares of Lake Community common stock convert
their shares into Western Sierra common stock there would be approximately
1,877,921 shares of Western Sierra common stock outstanding immediately
following the completion of the Western Sierra/Lake Community merger, comprised
of 981,448 outstanding shares of Western Sierra common stock and approximately
896,473 shares of Western Sierra common stock issued as a result of the Western
Sierra/Lake Community merger.

No fractional shares of Western Sierra common stock will be issued in the
Western Sierra/Lake Community merger. Instead, shareholders of Lake Community
will receive an amount in cash equal to the product, rounded to the nearest
hundredth, obtained by multiplying (a) Western Sierra Market Value Per Share by
(b) the fraction of a share of Western Sierra common stock to which the holder
would otherwise be entitled. "Western Sierra Market Value Per Share" means the
last trade of Western Sierra common stock prior to date of completion of the
Western Sierra/Lake Community merger.
    

EXCHANGE PROCEDURE. Each holder of a certificate representing shares of Lake
Community common stock shall surrender the certificate, duly endorsed as Western
Sierra may require, to American Securities Transfer and Trust as the Lake
Community Exchange Agent. Each holder shall then receive from Western Sierra in
exchange

   
- -     a certificate representing the number of whole shares of Western Sierra
      common stock to which the holder shall have become entitled based upon the
      Lake Community conversion rate, and
    

- -     a check for any fractional share.


                                       37
<PAGE>   47
Upon surrender for cancellation to the Lake Community Exchange Agent of one or
more Lake Community Certificates for shares of Lake Community common stock,
accompanied by the Transmittal Letter which will be sent to the Lake Community
shareholders, the Lake Community Exchange Agent shall, promptly after the
completion of the Western Sierra/Lake Community merger, deliver to each holder
of surrendered Lake Community Certificates new certificates representing the
appropriate number of shares of Western Sierra common stock ("New Certificates")
and checks for payment of fractional shares.

Until Lake Community Certificates have been surrendered and exchanged, each
outstanding Lake Community Certificate shall be deemed for all corporate
purposes to represent the number of shares of Western Sierra common stock into
which the number of shares of Lake Community common stock shown thereon have
been converted. No dividends or other distributions which are declared on
Western Sierra common stock will be paid to persons otherwise entitled to
receive the same until the Lake Community Certificates have been surrendered in
exchange for New Certificates in the manner herein provided, but upon the
surrender, the dividends or other distributions, from and after the completion
of the Western Sierra/Lake Community merger, will be paid to those persons in
accordance with the terms of the Western Sierra common stock. In no event shall
the persons entitled to receive the dividends or other distributions be entitled
to receive interest on the dividends or other distributions.

   
No shareholder will be liable for any transfer taxes unless a certificate for
Western Sierra common stock is to be issued in a name other than the
shareholder's. It shall be a condition of the issuance that the person
requesting the issuance shall properly endorse the Lake Community Certificates
and shall pay to Western Sierra or the Lake Community Exchange Agent any
transfer taxes owed for that transfer or for any prior transfer or establish to
the satisfaction of Western Sierra or the Lake Community Exchange Agent that the
taxes have been paid or are not payable.

If any holder of Lake Community common stock is unable to surrender his or her
Lake Community Certificates because the certificates have been lost or
destroyed, the holder may instead deliver an affidavit and indemnity undertaking
in form and substance and, if required, with surety satisfactory to the Lake
Community Exchange Agent and Western Sierra.
    

   
EXCHANGE OF OUTSTANDING STOCK OPTIONS FOR SHARES OF LAKE COMMUNITY COMMON STOCK.
All outstanding rights to acquire Lake Community common stock pursuant to
existing stock options for shares of Lake Community common stock will be
converted into and become outstanding rights to acquire shares of Western Sierra
common stock at the Lake Community conversion rate with a corresponding
adjustment in the option price.
    

INTERESTS OF CERTAIN PERSONS IN THE WESTERN SIERRA/LAKE COMMUNITY MERGER AND
MATERIAL CONTRACTS WITH LAKE COMMUNITY AND ITS AFFILIATES

   
In considering the recommendations of the Boards of Directors of Western Sierra
and Lake Community for approval of the Western Sierra/Lake Community merger, the
shareholders of Western Sierra and Lake Community should be aware that certain
members of the Boards of Directors of Western Sierra and Lake Community may have
a substantial interest in the Western Sierra/Lake Community merger as described
below.
    


                                       38
<PAGE>   48
Upon completion of the Western Sierra/Lake Community merger, three directors of
Lake Community shall be appointed as directors of Western Sierra to serve until
the next annual meeting of shareholders of Western Sierra and until their
successors are elected and qualified. At the completion of the Western
Sierra/Lake Community merger, there shall be nine members of the Board of
Directors of Lake Community; three will be selected by Western Sierra, and six
will be current directors of Lake Community. The six existing directors of Lake
Community shall serve as directors of Lake Community for at least a two year
period after the completion of the Western Sierra/Lake Community merger. It is
presently anticipated that John Helms, Gary E. Nordine, and Howard ("Bud") Van
Lente will be appointed as directors of Western Sierra, that Donald L. Browning,
F. Ilene Dumont, John Helms, Billy L. Holmes, May G. Noble and Bud Van Lente
will continue to serve as directors of Lake Community, and that Charles W.
Bacchi, Gary D. Gall and Douglas A. Nordell will be appointed as new directors
of Lake Community.

In addition, each director of Lake Community has entered into a director's
agreement with Western Sierra which provides that the director agrees:

   
1.    to recommend that the shareholders of Lake Community approve the Western
      Sierra/Lake Community agreement, and to advise Lake Community's
      shareholders to reject any subsequent proposal or offer received by Lake
      Community relating to any purchase, sale, acquisition, merger or other
      form of business combination involving Lake Community or any of its
      assets, equity securities or debt securities and to proceed with the
      transactions contemplated by the Western Sierra/Lake Community agreement,
      unless Lake Community's Board of Directors has been advised by outside
      legal counsel that, in the exercise of the director's fiduciary duties, a
      director of Lake Community should not take that action;
    

   
2.    not to take any action that will alter or affect in any way the right to
      vote the shares of Lake Community common stock, except (x) with the prior
      written consent of Western Sierra or (y) to change the right from that of
      a shared right of the director to vote the shares of Lake Community common
      stock to a sole right of the director to vote the shares of Lake Community
      common stock; and
    

3.    to vote all shares of Lake Community common stock as to which the director
      has voting power in favor of the Western Sierra/Lake Community merger.

The director's agreements also provide that the directors shall not for a period
of three years after the completion of the Western Sierra/Lake Community merger,
directly or indirectly, without the prior written consent of Western Sierra, own
more than 1% of, organize, manage, operate, finance or participate in the
ownership, management, operation or financing of, or be connected as an officer,
director, employee, principal, agent or consultant to any financial institution
whose deposits are insured by the FDIC that has its head office or a branch
office within 50 miles of the head office of Lake Community.

Upon completion of the Western Sierra/Lake Community merger, Gary Nordine, the
past President of Lake Community, will receive a severance payment of $145,000,
net of taxes, with the tax liability being shared equally by Western Sierra and
Lake Community. In recognition of Mr. Nordine's retirement as of October 31,
1998, the severance payment to Mr. Nordine is not contingent upon his being
employed by Lake Community as of the date of completion of the Western
Sierra/Lake Community merger. Mr. Nordine continued to receive his monthly
salary, 


                                       39
<PAGE>   49
but no other benefits, from November 1 through November 30, 1998. Mr. Nordine
also has an Executive Retirement Agreement with Lake Community which provides
that Lake Community will pay Mr. Nordine $36,000 a year, in monthly payments,
for a period of ten (10) years, commencing in January 1999.

   
Gary D. Gall, who is currently the President and Chief Executive Officer of
Western Sierra and Western Sierra National Bank, and Lesa Fynes, who is
currently the Controller of Western Sierra and Senior Vice President and Chief
Financial Officer of Western Sierra National Bank, are expected to serve in the
same positions with Western Sierra and Western Sierra National Bank following
the Western Sierra/Lake Community merger. In addition, Stephanie M. Marsh, who
is currently the Senior Vice President and Chief Administrative Officer of
Western Sierra National Bank, and Kirk Dowdell, who is currently the Senior Vice
President and Chief Credit Officer of Western Sierra National Bank, are expected
to serve in those positions with both Western Sierra and Western Sierra National
Bank following the Western Sierra/Lake Community merger. It is also anticipated
that Douglas A. Nordell, who is the Executive Vice President of Roseville and
who became President and Chief Executive Officer of Lake Community upon Mr.
Nordine's retirement, will serve as President and Chief Executive Officer of
Lake Community following the Western Sierra/Lake Community merger. In addition,
it is anticipated that Brandt Peterson, who is currently Senior Vice President
and Senior Loan Officer of Lake Community, and Doreen Pendleton, who is
currently Controller of Lake Community, will continue to serve with Lake
Community in those positions following the Western Sierra/Lake Community merger.
It is anticipated that most other present officers and employees of Western
Sierra and Lake Community will initially continue in the same or similar
capacities with Western Sierra and Lake Community at the same or comparable
compensation levels. For information regarding Western Sierra's employee benefit
plans see the descriptions of Western Sierra's employee benefit plans below in
"Description of Western Sierra--Management--Compensation of Directors and
Executive Officers."
    

REGULATORY APPROVAL AND COMPLETION OF THE WESTERN SIERRA/LAKE COMMUNITY MERGER

The Western Sierra/Lake Community merger was approved by the Department of
Financial Institutions (the "DFI") on December 11, 1998, by the FDIC on December
11, 1998 and by the Board of Governors of the Federal Reserve System (the "FRB")
on December 11, 1998. THE APPROVAL OF THE WESTERN SIERRA/LAKE COMMUNITY MERGER
BY THE DFI, THE FDIC AND THE FRB IS NOT A RECOMMENDATION OR ENDORSEMENT OF THE
WESTERN SIERRA/LAKE COMMUNITY MERGER BY ANY OF THE DFI, THE FDIC OR THE FRB. The
completion of the Western Sierra/Lake Community merger is anticipated to take
place on a day ("Lake Community Closing Date") which shall not, however, be
later than thirty (30) days after

- -     the receipt of the last required regulatory approval and expiration of all
      applicable waiting periods, and

- -     satisfaction of the conditions precedent to the obligations of each of
      Western Sierra and Lake Community or the written waiver of the conditions
      by Western Sierra or Lake Community, as applicable.

   
It is presently anticipated that the Western Sierra/Lake Community merger will
be completed during the second quarter of this year.
    


                                       40
<PAGE>   50
CONDITIONS TO THE WESTERN SIERRA/LAKE COMMUNITY MERGER

   
The Western Sierra/Lake Community agreement provides that the completion of the
Western Sierra/Lake Community merger is subject to various conditions which must
be satisfied before the completion of the Western Sierra/Lake Community merger,
including the following:

1.    The Western Sierra/Lake Community agreement and the Western Sierra/Lake
      Community merger shall have been approved by the vote of the holders of a
      majority of the outstanding stock of Western Sierra and Lake Community,
      respectively;
    

2.    All approvals or permits required to be obtained, and all waiting periods
      required to expire, for the Western Sierra/Lake Community merger shall
      have been obtained or expired, without the imposition of any materially
      burdensome condition on any party to the Western Sierra/Lake Community
      merger as determined by the party affected;

3.    There shall not be any action taken, or any law, regulation or order
      enacted, enforced or deemed applicable to the Western Sierra/Lake
      Community merger, by any government entity which:

      -     makes the completion of the Western Sierra/Lake Community merger
            illegal;

      -     requires the divestiture by Western Sierra of any material asset or
            of a material portion of the business of Western Sierra; or

   
      -     imposes any condition upon Western Sierra or its subsidiaries which
            in the judgment of Western Sierra would be materially burdensome;
    

   
4.    Western Sierra's Registration Statement shall have become effective under
      the Securities Act and no stop order suspending the effectiveness of the
      Registration Statement shall have been issued and shall remain in effect.
      No action or proceeding shall have been instituted to restrain or prohibit
      the transactions contemplated in the Western Sierra/Lake Community
      agreement;
    

5.    Western Sierra and Lake Community shall have received a determination from
      Perry-Smith & Co., LLP that the Western Sierra/Lake Community merger will
      qualify for the pooling of interests accounting method;

   
6.    The representations and warranties of each of Western Sierra and Lake
      Community set forth in the Western Sierra/Lake Community agreement shall
      be true in all material respects as of the date of completion of the
      Western Sierra/Lake Community merger; each of Western Sierra and Lake
      Community shall have duly performed and complied in all material respects
      with all agreements required by the Western Sierra/Lake Community
      agreement, except where the failure to so perform and comply would not
      have or would not be reasonably likely to have a material adverse effect
      on Lake Community or Lake Community as the Surviving Corporation of the
      Western Sierra/Lake Community merger; and none of the events or conditions
      entitling either party to terminate the Western Sierra/Lake Community
      agreement shall have occurred and be continuing;
    


                                       41
<PAGE>   51
   
7.    Western Sierra and Lake Community shall have received certificates of
      officers of the other party stating that the representations and
      warranties as set forth in the Western Sierra/Lake Community agreement are
      true and correct, and opinions of counsel for the other party;

8.    No action, suit or proceeding shall have been instituted or threatened
      before any court or governmental body seeking to challenge or restrain the
      transactions contemplated by the Western Sierra/Lake Community agreement
      which presents a substantial risk that the transactions will be restrained
      or that either Western Sierra or Lake Community may suffer material
      damages;
    

9.    The holders of no more than 10% of the outstanding shares of Lake
      Community common stock have exercised dissenters' rights. Dissenters of
      Western Sierra shall be included in the calculation;

10.   There shall not have been any change in the consolidated financial
      condition, aggregate consolidated net assets, shareholders' equity,
      business, or consolidated operating results of Western Sierra and its
      subsidiaries, taken as a whole, from December 31, 1997 to the date of
      completion of the Western Sierra/Lake Community merger that results in a
      material adverse effect as to Western Sierra and its subsidiaries, taken
      as a whole;

11.   No event or circumstance shall have occurred which has had or could
      reasonably be expected to have a material adverse effect on Lake
      Community; and

   
12.   Each of Western Sierra and Lake Community shall have received a written
      opinion from a recognized company experienced in providing business
      valuations and fairness opinions, selected by Western Sierra or Lake
      Community, respectively, confirming the fairness of the terms of the
      Western Sierra/Lake Community merger to Western Sierra and its
      shareholders from a financial perspective, and to Lake Community and its
      shareholders from a financial perspective, respectively, and these
      opinions shall not have been withdrawn prior to the date of completion of
      the Western Sierra/Lake Community merger.
    

On December 11, 1998, the FDIC approved the Western Sierra/Lake Community merger
subject to approval of the shareholders of LMC and Lake Community, on December
11, 1998, the FRB approved the Western Sierra/Lake Community merger subject to
approval of the shareholders of Western Sierra and Lake Community, and on
December 11, 1998, the DFI approved the Western Sierra/Lake Community merger
subject to approval of the shareholders of Western Sierra and Lake Community. In
addition, on May 27, 1998, The Findley Group rendered its written opinion to
Western Sierra's Board of Directors that the terms of the Western Sierra/Lake
Community merger are fair, from a financial point of view, to the shareholders
of Western Sierra , and updated the opinion on December 24, 1998. On May 27,
1998, Banc Stock Group rendered its written opinion to Lake Community's Board of
Directors that the merger consideration to be received in the Western
Sierra/Lake Community merger is fair, from a financial point of view, to the
shareholders of Lake Community, and updated the opinion on December 24, 1998.


                                       42
<PAGE>   52
WAIVER, AMENDMENT, AND TERMINATION

   
Any term or provision of the Western Sierra/Lake Community agreement, other than
regulatory approval or any of the provisions required by law, may be waived in
writing at any time by the party which is, or whose shareholders are, entitled
to the benefits of the term or provision.

The Western Sierra/Lake Community agreement provides that it may be terminated
prior to the completion of the Western Sierra/Lake Community merger:
    

1.    By mutual consent of the Boards of Directors of Western Sierra and Lake
      Community;

   
2.    By Western Sierra or Lake Community upon the failure to satisfy any
      conditions specified in the Western Sierra/Lake Community agreement if the
      failure is not caused by any action or inaction of the party requesting
      termination;
    

3.    By Western Sierra or Lake Community if a Lake Community Acquisition Event,
      as defined below, involving the other party shall have occurred;

4.    By either Western Sierra or Lake Community if there shall have been a
      material breach of any of the representations or warranties of the other
      party, which breach, in the reasonable opinion of the terminating party,
      by its nature cannot be cured or is not cured prior to the Lake Community
      Closing and which breach would, in the reasonable opinion of the
      terminating party, individually or in the aggregate, have, or be
      reasonably likely to have, a material adverse effect on the breaching
      party, or upon the completion of the Western Sierra/Lake Community merger;

   
5.    By Western Sierra or Lake Community after the occurrence of a default by
      the other party and the continuance of the default for a period of 20
      business days after written notice of the default, if the default, in the
      reasonable opinion of the terminating party, cannot be cured prior to the
      Lake Community Closing;
    

   
6.    By Western Sierra or Lake Community if the updated schedules to the
      Western Sierra/Lake Community agreement prepared and delivered by the
      other party disclose the occurrence of an event or the existence of any
      facts or circumstances, not previously disclosed, that has had or could
      reasonably be expected to have a material adverse effect on the other
      party, or on the completion of the Western Sierra/Lake Community merger;
      or

7.    By Western Sierra or Lake Community upon the failure of any of the
      conditions specified in the Western Sierra/Lake Community agreement to
      have been satisfied prior to March 31, 1999.
    

A "Lake Community Acquisition Event" is defined as a public announcement of an
intent to enter into a letter of intent or an agreement with any other entity,
other than Lake Community or Western Sierra, to effect an acquisition or failure
to publicly oppose a tender offer for the acquisition of either Lake Community's
or Western Sierra's shares or an exchange offer for the shares of either Lake
Community or Western Sierra for shares of the offering entity.


                                       43
<PAGE>   53
LIQUIDATED DAMAGES

If a Lake Community Acquisition Event occurs involving Lake Community, then Lake
Community shall pay to Western Sierra the sum of Five Hundred Thousand Dollars
($500,000) in cash. If a Lake Community Acquisition Event occurs involving
Western Sierra, then Western Sierra shall pay to Lake Community the sum of Five
Hundred Thousand Dollars ($500,000) in cash.

   
If the Western Sierra/Lake Community agreement is terminated by Lake Community
as a result of the revocation of the Lake Community fairness opinion; or a
termination of the Western Sierra/Lake Community agreement by Western Sierra
because

- -     Lake Community's shareholders do not approve the Western Sierra/Lake
      Community agreement, or

- -     of a breach of Lake Community's representations or warranties, a default
      by Lake Community, or disclosure in the updated schedules to the Western 
      Sierra/Lake Community agreement of a material adverse event,
    

   
then, Lake Community shall pay to Western Sierra the sum of Two Hundred Thousand
Dollars ($200,000), in cash. However, if Lake Community enters into an
acquisition agreement within one hundred eighty (180) days following termination
by Western Sierra, Lake Community shall pay to Western Sierra an additional
Three Hundred Thousand Dollars ($300,000) in cash.
    

   
If the Western Sierra/Lake Community agreement is terminated by Western Sierra
as a result of the revocation of Western Sierra fairness opinion; or a
termination of the Western Sierra/Lake Community agreement by Lake Community
because

- -     Western Sierra's shareholders do not approve the Western Sierra/Lake
      Community agreement, or
    

   
- -     of a breach of Western Sierra's representations and warranties, a default
      by Western Sierra, or disclosure in the updated schedules to the Western 
      Sierra/Lake Community agreement of a material adverse event,
    

   
then, Western Sierra shall pay to Lake Community the sum of Two Hundred Thousand
Dollars ($200,000), in cash. However, if a Lake Community Acquisition Event
occurs involving Western Sierra within one hundred eighty (180) days following
termination by Lake Community, Western Sierra shall pay to Lake Community an
additional Three Hundred Thousand Dollars ($300,000) in cash.
    


                                       44
<PAGE>   54
OPINIONS OF FINANCIAL ADVISORS

OPINION OF WESTERN SIERRA'S FINANCIAL ADVISOR.

   
General. Pursuant to oral discussions in early March 1998 and confirmed in
writing by an engagement letter executed on May 8, 1998, Western Sierra engaged
The Findley Group to advise Western Sierra regarding the consideration by
Western Sierra's Board of Directors of the acquisition of one or more companies
in the banking industry in Northern California. The Findley Group is a
nationally recognized investment banking firm and, as part of its investment
banking activities, is regularly engaged in the valuation of businesses and
their securities in merger transactions and other types of acquisitions,
negotiated underwritings, private placements and valuations for corporate and
other purposes. Western Sierra selected The Findley Group as its financial
advisor on the basis of its experience in transactions similar to the Western
Sierra/Lake Community merger and its reputation in the banking and investment
communities. The Findley Group did not determine the consideration to be paid by
Western Sierra in the Western Sierra/Lake Community merger. Western Sierra,
through the negotiations with Lake Community, determined the Lake Community
conversion rate.

Western Sierra's Board of Directors handled Western Sierra's negotiations for
the Western Sierra/Lake Community merger. Pursuant to authority granted to him,
Gary D. Gall, President and Chief Executive Officer of Western Sierra received
an oral opinion from The Findley Group on March 27, 1998, that the terms of the
proposed Western Sierra/Lake Community merger based on the negotiations as they
then existed and when taken as a whole were fair to the shareholders of Western
Sierra from a financial standpoint as of that date. Western Sierra then
commenced preparation of the Western Sierra/Lake Community agreement. By action
taken May 19, 1998, Western Sierra's Board of Directors approved the essential
terms of the Western Sierra/Lake Community merger and entry into the Western
Sierra/Lake Community agreement for the Western Sierra/Lake Community merger
embodying those terms. At the May 19, 1998 meeting of Western Sierra's Board of
Directors, The Findley Group delivered its oral opinion, subsequently confirmed
in its written opinion dated May 27, 1998, that the terms of the proposed
Western Sierra/Lake Community merger are fair to the shareholders of Western
Sierra from a financial standpoint as of the date of the opinion.

The Western Sierra Board of Directors did not question The Findley Group or
review The Findley Group's methodology to determine that the terms of the
Western Sierra/Lake Community agreement were fair to the shareholders of Western
Sierra from a financial standpoint due to the fact that there was no dilution to
the Western Sierra book value per share and that the value of the transaction
from a book value perspective was significantly below the California
Acquisitions median for price to book value multiple. The Findley Group only
verified the assumptions of the Western Sierra Board of Directors that the terms
of the Western Sierra/Lake Community merger were fair to the shareholders of
Western Sierra from a financial standpoint.
    

   
No limitations were imposed by Western Sierra on The Findley Group in the
investigations made or procedures followed in rendering its opinion. The Findley
Group's opinion is addressed to Western Sierra's Board of
Directors and does not constitute a recommendation to any shareholder of Western
Sierra as to how the shareholder should vote at the Western Sierra Meeting.
    

Prior to issuing its opinion, The Findley Group, among other things:

- -     reviewed certain publicly available financial and other data of Western
      Sierra and Lake Community, including the financial statements for recent
      years and interim periods to March 31, 1998, and certain other relevant
      financial and operating data relating to Western Sierra and Lake Community
      made available to The Findley Group from published sources and from the
      internal records of Western Sierra ;

   
- -     reviewed the Western Sierra/Lake Community agreement;
    


                                       45
<PAGE>   55
- -     reviewed certain historical market prices and trading volumes of shares of
      Western Sierra common stock;

- -     compared Western Sierra and Lake Community from a financial point of view
      with certain other companies that The Findley Group deemed to be relevant;

- -     considered the publicly available financial terms of selected recent
      business combinations of companies that The Findley Group deemed to be
      comparable, in whole or in part, to the Western Sierra/Lake Community
      merger;

- -     reviewed and discussed with representatives of the management of Western
      Sierra certain information of a business and financial nature regarding
      Western Sierra and Lake Community furnished to The Findley Group by
      Western Sierra , including financial forecasts for 1998 and related
      assumptions of Western Sierra on cost savings;

   
- -     made inquiries regarding and discussed the Western Sierra/Lake Community
      merger and the Western Sierra/Lake Community agreement and other matters
      related thereto with Western Sierra; and
    

- -     performed other analyses and examinations as The Findley Group deemed
      appropriate.

   
The Findley Group did not independently verify any of the foregoing information,
and relied on the information and assumed the information was complete and
accurate in all material respects. The Findley Group assumed for purposes of its
opinion that the 1998 financial forecasts for Western Sierra and Lake Community
provided to The Findley Group by Western Sierra, were reasonably prepared on
bases reflecting the best available estimates and judgment of the Western Sierra
management at the time of preparation as to the future financial performance of
Western Sierra and Lake Community and that the forecasts provided a reasonable
basis upon which The Findley Group could form its opinion. The Findley Group
also assumed that there were no material changes in Western Sierra's or Lake
Community's assets, financial condition, results of operations, business, or
prospects since the dates of the last financial statements made available to The
Findley Group. The Findley Group relied on advice of counsel to Western Sierra
as to all legal matters with respect to Western Sierra, the Western Sierra/Lake
Community merger, the joint proxy statement/prospectus and the Western
Sierra/Lake Community agreement. In addition, The Findley Group is not expert in
the evaluation of loan portfolios for purposes of assessing the adequacy of the
allowances for losses with respect thereto and assumed, with the consent of
Western Sierra, that the allowances for each of Western Sierra and Lake
Community were in the aggregate adequate to cover the losses. In addition, The
Findley Group did not make an independent evaluation, appraisal, or physical
inspection of the assets or individual properties of Western Sierra or Lake
Community and was not furnished with any appraisals. Further, The Findley
Group's opinion was based on economic, monetary, and general market and other
conditions existing as of the date of the opinion and on the assumption that the
Western Sierra/Lake Community agreement will be completed in accordance with its
terms, without any amendments to it, and without waiver by Western Sierra of any
of the conditions to its obligations.
    

Set forth is a brief summary of the report presented by The Findley Group to
Western Sierra's Board of Directors which confirmed its earlier oral opinion.


                                       46
<PAGE>   56
Analysis of Selected Bank Merger Transactions. The Findley Group reviewed the
consideration paid in recently completed transactions whereby certain banks were
acquired. Specifically, The Findley Group reviewed over 71 recent transactions
involving acquisitions of selected banks in California completed since January
1996 (the "California Acquisitions"). For each bank acquired in those
transactions, The Findley Group compiled figures illustrating, among other
things, the ratio of the premium (i.e., purchase price in excess of tangible
book value) to deposits, purchase price to book value, and purchase price to
previous year's earnings.

The figures for banks acquired or to be acquired in the California Acquisitions
produced:

- -     a median percentage of premium to deposits of 6.50%;

- -     a median multiple of purchase price to book value of 1.63; and

- -     a median multiple of purchase price to previous year's earnings of 17.10.

   
In comparison, assuming that the consideration to be paid in the Western
Sierra/Lake Community merger equals 0.677 shares of Western Sierra common stock
and that Western Sierra Average Trading Price equals $18.00 per share, The
Findley Group determined that the consideration to be paid by Western Sierra in
the Western Sierra/Lake Community merger represented a percentage of premium to
deposits of 8.49%, a multiple of purchase price to book value of 1.75 and a
multiple of purchase price to previous year's earnings of 19.7. Assuming that
the consideration to be paid in the Western Sierra/Lake Community merger equals
0.677 shares of Western Sierra common stock and that Western Sierra Book Value
Per Share equals $9.51, The Findley Group determined that the consideration to
be paid by Western Sierra in the Western Sierra/Lake Community merger
represented no percentage of premium to deposits since no premium was paid, a
multiple of purchase price to book value of 0.92 and a multiple of purchase
price to previous year's earnings of 11.46.

The following table is a summary of the various valuation results.

                        Summary of Valuation Results(1)
<TABLE>
<CAPTION>
                        At $18.00 Per Share                  At $9.51 Per Share
                         Market Value(2)                        Book Value(3)
                --------------------------------     ----------------------------------   California
                Western       Lake                   Western        Lake                  Acquisition
                Sierra     Community    Combined     Sierra      Community     Combined     Median
                -------    ---------    --------     -------     ---------     --------   -----------
<S>             <C>        <C>          <C>          <C>         <C>           <C>        <C>
Premium to
  Deposits       8.14%        8.49%       8.29%           0%            0%            0%      6.50%
Price to Book 
  Value          1.75         1.75        1.75         1.00          0.92          1.03       1.63
Price to 
  Previous
  Years 
  Earnings      16.66        19.65       18.17         8.80         11.46          9.60      17.10
</TABLE>

- -----------------
(1) Based upon 946,162 shares of Western Sierra common stock and 1,240,546 
    shares of Lake Community common stock outstanding as of December 31, 
    1997.

(2) Based upon the May 1998 market price per share for Western Sierra of
    $18.00 per share.

(3) Based upon the December 31, 1997 book value per share for Western Sierra
    of $9.51. 
    


   
No other company or transaction used in the above analysis as a comparison is
identical to Western Sierra, Lake Community, or the Western Sierra/Lake
Community merger. Accordingly, an analysis of the results of the foregoing is
not mathematical; rather, it involves complex considerations and judgments
concerning differences in financial and operating characteristics of the
companies and other factors that could affect the public trading value of the
companies to which Western Sierra, Lake Community, and the Western Sierra/Lake
Community merger are being compared.
    

Contribution Analysis. The Findley Group analyzed the contribution of each of
Western Sierra and Lake Community to, among other things, common equity and net
income of the pro forma combined companies for the year ended December 31, 1997.
This analysis showed, among other things, that based on pro forma combined
balance sheets and income statements for Western Sierra and Lake Community as of
December 31, 1997, Western Sierra would have contributed 56.5% of the deposits,
52.3% of shareholders' equity and 57.7% of the 1997 net income of the combined
companies. Assuming that the consideration to be paid in the Western Sierra/Lake
Community merger equals one share of Lake Community common stock per 0.677
shares of Western Sierra common stock, Western Sierra shareholders would own
53.2% of the combined companies.


                                       47
<PAGE>   57
Dilution Analysis. Using estimates of 1998 earnings prepared by Western Sierra's
management, The Findley Group compared the calendar year 1998 estimated earnings
per share of Lake Community common stock and Western Sierra common stock to the
calendar year 1998 estimated earnings per share of the common stock of the pro
forma combined companies. Based on such analysis and based upon Western Sierra
issuing approximately 855,000 shares of Western Sierra common stock, the
proposed transaction would be dilutive to Western Sierra's earnings per share in
1998, prior to projected break-even revenue, enhancements and cost savings of
10% of Lake Community's budgeted 1998 noninterest expense of $3,500,000. The
projected cost savings of at least 10% of Lake Community's budgeted 1998
noninterest expense was determined by Western Sierra's management based on the
projected cost savings of financial institutions in similar merger transactions.
Western Sierra's management informed The Findley Group that it estimated that
the potential revenue enhancements and costs savings could be achieved, which
would result in the proposed transaction being accretive to Western Sierra's
shareholders.

   
Comparable Company Analysis. Using public and other available information, The
Findley Group compared certain financial ratios of Western Sierra and Lake
Community (including the ratio of net income to average total assets ("return on
average assets"), the ratio of net income to average total equity ("return on
average equity"), the ratio of average equity to average assets and certain
credit ratios for the year ended December 31, 1997) to a peer group consisting
of 20 selected banks located in California. No company used in the analysis is
identical to Western Sierra or Lake Community. The analysis necessarily involved
complex considerations and judgments concerning differences in financial and
operating characteristics of the companies. The results of this analysis
indicated that Western Sierra performed slightly ahead of peer group level on
the basis of profitability in 1997 and Lake Community performed slightly below
peer group levels on the basis of profitability in 1997. Western Sierra's return
on average assets and return on average equity for 1997 were above peer group
levels, inclusive of its interest spread factors (interest earned on assets
minus interest paid on liabilities). Western Sierra's performance in 1997,
continuing through March 31, 1998, showed consistency with peer group levels
concerning nonperforming assets. Western Sierra's noninterest expense, inclusive
of payroll expense, quarters expense and other related noninterest expenses were
higher than peer group level. Lake Community's return on average assets, return
on average equity for 1997 was slightly below peer group levels. In addition,
delinquent loans and nonperforming loans were higher than peer group levels. The
combined entity will be on an average with peer group performance with regard to
return on average assets, return on average equity and slightly below
nonperforming asset figures.
    

Consideration of Discounted Cash Flow Method

   
The Findley Group examined the results of a preliminary discounted cash flow 
analysis to compare the Lake Community conversion rate with the present value 
that would be attained if Western Sierra remained independent through 2001 and 
then was acquired by a larger financial institution. The Findley Group assumed 
the Lake Community conversion rate would be 0.677 shares of Western Sierra 
common stock for each share of Lake Community common stock in preparing its 
preliminary discounted cash flow analysis. The preliminary discounted cash flow 
analysis also assumed that Western Sierra, on a stand along basis, would 
achieve 1998 estimated earnings per share of $1.22 and The Findley Group 
assumed earnings would increase 10 per cent per year for years 1999 to 2001. 
The preliminary discounted cash flow analysis for the combined companies 
assumed that Lake Community would have similar earnings per share in 1998 as 
compared to 1997 and the cost savings would be $350,000 after tax and in 1999 
through 2001, earnings would increase 10 percent per year.

The discount rates used ranged from 8 percent to 12 percent. For the Western 
Sierra stand alone analysis, the terminal price multiples applied to the 2001 
estimated earnings per share ranged from 12.0 to 20. The lower levels of the 
price to earnings multiples range reflected an estimated future trading range 
of Western Sierra and of the combined companies, while the higher levels of the 
price to earnings multiples range were more indicative of a future sale of 
Western Sierra or the combined companies to a larger financial institution.

For the Western Sierra stand along analysis, the cash flows were comprised of 
no cash dividends in years 1998 through 2001 plus the terminal value of Western 
Sierra at the year end 2001 (calculated by applying each one of the assumed 
terminal price to earnings multiples as stated above to the 2001 projected 
Western Sierra earnings per share). A similar analysis was done for Lake 
Community and for the combined companies. The discount rates described above 
were then applied to these cash flows to obtain the present values per share of 
Western Sierra common stock.

Under a most likely scenario, The Findley Group analysis assumed the projected 
earnings would be achieved; that the combined companies would realize the 
projected operating cost savings of a minimum of $350,000; a present value 
discount rate of 12%; and a terminal price to earnings multiple of 20.0. 
Assuming Western Sierra remains independent through 2001 and is then acquired 
by a larger financial institution, a holder of one share of Western Sierra 
common stock would receive cash flows with a present value of $20.60. Assuming 
the Western Sierra/Lake Community merger is completed and the combined 
companies remain independent through 2001 and are then acquired by a larger 
financial institution, a holder of one share of Western Sierra common stock 
would receive cash flows with a present value of at least $22.80.

The Findley Group did complete the preliminary discounted cash flow analysis,
described above, The Findley Group determined that discounted cash flow analysis
is most appropriate for companies which show relatively steady or somewhat
predictable streams of cash flow. Given the uncertainty in estimating both
Western Sierra's and Lake Community's future cash flows and a sustainable
long-term growth rate, The Findley Group considered a discounted cash flow
analysis inappropriate in its valuation.

The preparation of a fairness opinion is not necessarily susceptible to partial
analysis or summary description. The Findley Group believes that its analyses
and the summary set forth above must
    


                                       48
<PAGE>   58

   
be considered as a whole and that selecting a portion of its analyses and the
factors considered, without considering all analyses and factors, would create
an incomplete view of the process underlying the analyses set forth in its
presentation to Western Sierra's Board of Directors. In addition, The Findley
Group may have given certain analyses more or less weight than other analyses
and may have deemed various assumptions more or less probable than other
assumptions, so that the ranges of valuations resulting from any particular
analysis described above should not be taken to be The Findley Group's view of
the actual value of Western Sierra, Lake Community, or the combined company. The
fact that any specific analysis has been referred to in the summary above is not
meant to indicate that that analysis was given greater weight than any other
analysis.
    

In performing its analyses, The Findley Group made numerous assumptions about
industry performance, general business and economic conditions and other
matters, many of which are beyond the control of Western Sierra or Lake
Community. The analyses performed by The Findley Group are not necessarily
indicative of actual values or actual future results, which may be significantly
more or less favorable than suggested by those analyses. The analyses were
prepared solely as part of The Findley Group's analysis of the fairness of the
terms of the proposed Western Sierra/Lake Community merger to Western Sierra's
shareholders from a financial standpoint and were provided to Western Sierra's
Board of Directors with the delivery of The Findley Group's opinion. The
analyses do not purport to be appraisals or to reflect the prices at which any
securities may trade at the present time or at any time in the future. The
Findley Group used in its analyses various projections of future performance
prepared by the management of Western Sierra. The projections are based on
numerous variables and assumptions which are inherently unpredictable and must
be considered not certain of occurrence as projected. Accordingly, actual
results could vary significantly from those set forth in the projections.

   
As described above, The Findley Group's opinion and presentation to Western
Sierra's Board of Directors were among the many factors taken into consideration
by Western Sierra's Board of Directors in making its determination to approve
the Western Sierra/Lake Community agreement.

Western Sierra paid The Findley Group $10,000 for its opinion. The Findley Group
is owned by Gary Steven Findley, counsel to Western Sierra.
    

   
UPDATED OPINION. On December 24, 1998, Western Sierra and Lake Community entered
into the First Amendment to Agreement and Plan of Reorganization and Merger
fixing the Lake Community conversion rate at 0.6905. The Findley Group reviewed
the fixed Lake Community conversion rate of 0.6905 in comparison to its written
opinion dated May 27, 1998. Based upon the market value of Western Sierra common
stock and the Lake Community conversion rate of .6905, the updated Summary of
Valuation is as follows:

                        Summary of Valuation Results(1)
<TABLE>
<CAPTION>
                        At $16.75 Per Share                  At $10.59 Per Share
                         Market Value(2)                        Book Value(3)
                --------------------------------     ----------------------------------   California
                Western       Lake                   Western        Lake                  Acquisition
                Sierra     Community    Combined     Sierra      Community     Combined     Median
                -------    ---------    --------     -------     ---------     --------   -----------
<S>             <C>        <C>          <C>          <C>         <C>           <C>        <C>
Premium to
  Deposits       4.89%        7.46%       5.86%           0%            0%            0%      6.50%
Price to Book 
  Value          1.58         1.59        1.59         1.00          1.01          1.00       1.63
Price to 
  Previous
  Years 
  Earnings      15.51        19.60       17.78         9.81         12.39         11.24      17.10
</TABLE>

- -----------------
(1) Based upon 981,448 shares of Western Sierra common stock and 1,298,296 
    shares of Lake Community common stock outstanding as of September 30,
    1998.

(2) Based upon the February 1999 market price per share for Western Sierra of
    $16.75 per share.

(3) Based upon the September 30, 1998 book value per share for Western Sierra
    of $10.59.

On December 24, 1998, The Findley Group delivered a written updated opinion that
the terms of the proposed Western Sierra/Lake Community merger are fair to the
shareholders of Western Sierra from a financial standpoint as of the date of the
opinion. The Findley Group did not charge Western Sierra for the written updated
opinion. The full text of The Findley Group's December 24, 1998 written opinion
to Western Sierra's Board of Directors, which sets forth the assumptions made,
matters considered, and limitations of the review of The Findley Group, is
attached to this joint proxy statement/prospectus as Exhibit III and is
incorporated herein by reference and should be read carefully and in its
entirety.
    


                                       49
<PAGE>   59

   
OPINION OF LAKE COMMUNITY'S FINANCIAL ADVISOR. Lake Community's Board of
Directors retained Banc Stock Group pursuant to an engagement letter dated
February 27, 1998, to provide financial advisory services in the proposed merger
of Lake Community with Western Sierra's wholly-owned subsidiary, LMC, by
rendering an opinion as to the fairness of the Lake Community conversion rate
from a financial point of view to Lake Community's shareholders. Lake Community
retained Banc Stock Group as investment bankers to determine the fairness, from
a financial point of view, to the holders of shares of Lake Community common
stock of the consideration to be received by Lake Community in the Western
Sierra/Lake Community merger. Pursuant to the Western Sierra/Lake Community
agreement, each holder of shares of Lake Community common stock will receive
from Western Sierra, in exchange for his or her shares of Lake Community common
stock, shares of Western Sierra common stock. The transaction is based on a
share value for Lake Community of 1.75 times Lake Community's book value to be
exchanged based on the determined market value per share of Western Sierra
common stock for each share of Lake Community common stock subject to certain
adjustments as described in the Western Sierra/Lake Community agreement.

Banc Stock Group has acted for Lake Community and for the Board of Directors of
Lake Community as financial advisor in this transaction and has received a fee
of $20,000 for advisory services and $16,500 for Banc Stock Group's written
fairness opinion to the Board of Directors of Lake Community on the Western
Sierra/Lake Community merger. Banc Stock Group has previously provided
investment banking and financial advisory services to Lake Community. Banc Stock
Group has not provided investment banking or financial advisory services to
Western Sierra. Banc Stock Group is not a market maker in shares of Lake
Community common stock. Lake Community's Board of Directors selected Banc Stock
Group to act as its advisor on the basis of Banc Stock Group's expertise and
experience in the banking industry. Banc Stock Group is an independent financial
services firm, specializing in the researching, buying, holding and selling
stock of publicly and privately traded community banks for its portfolio and
portfolios of its clients, and as part of its investment banking activities, is
regularly engaged in the valuation of banks and their securities in mergers and
other types of acquisitions, negotiated underwritings, stock navigation
programs, and other purposes.
    

   
No limitations were imposed by Lake Community on Banc Stock Group in the
investigations made or procedures followed in rendering its opinion. Banc Stock
Group issued the Lake Community fairness opinion that the Lake Community
conversion rate is fair, from a financial point of view, to the holders of the
shares of Lake Community common stock on May 27, 1998. The Lake Community
fairness opinion should be read carefully and in its entirety.

In arriving at the Lake Community fairness opinion, Banc Stock Group has
reviewed and analyzed, among other things, the following:

- -     the Western Sierra/Lake Community agreement;
    

- -     certain publicly available financial and other data of Lake Community and
      Western Sierra including consolidated financial statements for the years
      1996 and 1997 and quarterly periods to March 31, 1998;

- -     certain other publicly available information concerning Lake Community and
      Western Sierra;



                                       50
<PAGE>   60
- -     publicly available information concerning other banks and holding
      companies, the trading markets for their securities and the nature and
      terms of certain other merger transactions Banc Stock Group believed
      relevant to its inquiry; and

- -     evaluations and analyses prepared and presented to the Board of Directors
      of Lake Community.

Banc Stock Group has held discussions with senior management of Lake Community
concerning Lake Community's past and current operations, financial condition and
prospects, as well as the results of regulatory examinations. Banc Stock Group
has reviewed with senior management of Lake Community 1998 earnings projections
for Lake Community as a stand-alone entity, assuming the Western Sierra/Lake
Community merger does not occur, prepared by Lake Community. Banc Stock Group
has also reviewed with the senior management of Lake Community the projected
operating cost savings of 10% of Lake Community's noninterest expense reasonably
expected by Western Sierra to result from the Western Sierra/Lake Community
merger. Certain pro forma financial projections for the combined companies and
for Lake Community as a stand-alone entity were derived by Banc Stock Group
based upon the 1998 earnings projections and projected operating costs savings
discussed above, as well as Banc Stock Group's own assessment of general
economic, market and financial conditions.

   
In conducting the review and in arriving at the Lake Community fairness opinion,
Banc Stock Group relied upon and assumed the accuracy and completeness of the
financial and other information provided to Banc Stock Group or publicly
available. Banc Stock Group has not assumed any responsibility for independent
verification of the same. Banc Stock Group has relied upon the management of
Lake Community and Western Sierra as to the reasonableness of the 1998 financial
and operating forecasts and projected operating cost savings (and the
assumptions and bases therefor) provided to Banc Stock Group. Banc Stock Group
has assumed that the 1998 forecasts and projected operating cost savings reflect
the best currently available estimates and judgement of Lake Community's
management. Banc Stock Group has also assumed, without assuming any
responsibility for the independent verification of same, that the aggregate
allowances for loanlosses for Lake Community and Western Sierra are adequate to
cover the losses. Banc Stock Group has not made or obtained any evaluations or
appraisals of the property of Lake Community or Western Sierra, nor has Banc
Stock Group examined any individual loan credit files. For purposes of its
opinion, Banc Stock Group has assumed that the Western Sierra/Lake Community
merger will have the tax, accounting and legal effects (including, without
limitation, that the Western Sierra/Lake Community merger will be accounted for
as a pooling of interests) described in the Western Sierra/Lake Community
agreement and assumed the accuracy of the disclosures set forth in the Western
Sierra/Lake Community agreement. The Lake Community fairness opinion is limited
to the fairness, from a financial point of view, to the holders of shares of
Lake Community common stock of the Lake Community conversion rate as described
in the Western Sierra/Lake Community agreement and does not address Lake
Community's underlying business decision to proceed with the Western Sierra/Lake
Community merger.
    

Banc Stock Group has considered the financial and other factors as it has deemed
appropriate under the circumstances, including among others the following:


                                       51
<PAGE>   61

- -     the historical and current financial positions and results of operations
      of Lake Community and Western Sierra, including interest income, interest
      expense, net interest income, net interest margin, provision for loan
      losses, noninterest income, noninterest expense, earnings, dividends,
      internal capital generation, book value, intangible assets, return on
      assets, return on shareholders' equity, capitalization, the amount and
      type of nonperforming assets, loan losses and the reserve for loan losses,
      all as set forth in the financial statements for Lake Community and for
      Western Sierra;

- -     the assets and liabilities for Lake Community and Western Sierra,
      including the loan, investment and mortgage portfolios, deposits, other
      liabilities, historical and current liability sources and costs and
      liquidity; and

- -     the nature and terms of certain other merger transactions involving banks
      and bank holding companies.

   
Banc Stock Group has also taken into account its assessment of general economic,
market and financial conditions and its experience in other transactions, as
well as its experience in securities valuation and its knowledge of the banking
industry generally. The Lake Community fairness opinion is necessarily based
only upon conditions as they exist and can be evaluated on the date of the
opinion and the information made available to Banc Stock Group through the date
of the opinion.

Set forth below is a brief summary of the Lake Community fairness opinion report
dated May 27, 1998. For purposes of its report, Banc Stock Group found that Lake
Community had approximately 1,445,521 outstanding shares of Lake Community
common stock (fully diluted) as of the report date. Banc Stock Group performed
in-depth financial analysis and peer group comparison on the subject
institution. Analysis was prepared utilizing both "quantitative and qualitative"
factors relating to overall performance benchmarking. Key indicators have been
offered based on accepted industry standards as well as regulatory indicators of
satisfactory bank performance.
    

Comparison Analysis. The valuation analyzed the contribution of Lake Community
and Western Sierra to total assets, total loans, total deposits, total equity
capital, and net income of the pro

forma combined institution as of December 31, 1997. This analysis was undertaken
without regard to the effect of merger costs or projected synergies realized by
the proposed Western Sierra/Lake Community merger.

This analysis showed that based on the pro forma financial statements of the
combined company as of December 31, 1997, Lake Community would contribute
approximately 44% of total assets, approximately 43.8% of total loans,
approximately 43.5% of total deposits, approximately 50% of total equity
capital, and approximately 42% of net income.

Multiple of Book Value Method. This valuation approach is formulated on the
purchase prices and multiples of book values based on recent transactions for
institutions involved in mergers and acquisitions utilizing both a national and
regional index.

   
In Banc Stock Group's opinion, the multiple factor of 1.4 - 3.0 is
representative of the current values of sound and profitable banks referencing
similar operating platforms with a multiple of 
    


                                       52
<PAGE>   62
   
1.8 specifically utilized in determining the valuation multiple of book for Lake
Community. BancStock Group selected a 1.8 multiple based upon its professional
opinion and is reflective of market and economic considerations, management,
historic performance, and competitive market factors at the time that the
valuation was provided for Lake Community. The multiple of book value is but one
methodology utilized in the determination of overall market value of Lake
Community. The 1.8 multiple utilized is a component of overall pricing and is
not reflective of the then Lake Community conversion rate which is based on an
exchange of shares based on market value. Utilizing the Multiple of Book Value
Method, (based on the March 31, 1998 call report) the acquisition value, as of
the Lake Community fairness opinion report date is as follows:
    

       $8,760,000 (Lake Community equity) X 1.8 (multiple) = $15,768,000

Multiple of Equity Return Method. This is the primary method of determining fair
market value and used extensively in valuation analysis. This valuation
preparation must take into account regional market transactions as well as
validating the forward earnings potential of Lake Community to demonstrate an
ability to support an institution's current and future earnings capacity
calculations.

Return multiples for the industry for profitable and financially sound
institutions are in the range of 14 to 20 times equity return. For the purpose
of this valuation a multiple of 15 times earnings will be utilized based on
known market conditions and institutions performance. Based on the equity return
of Lake Community utilizing most recent fiscal year-end with comparison to
current annualized estimated equity return calculates a value of $11,490,000.

         $766,000 Estimated Equity Return X 15 (multiple) = $11,490,000

   
Market Value Method. This method of determining the price of an institution's
per share market value is based on existing and previously documented stock
transactions. These transactions provide an indication of an institution's per
share value. In Banc Stock Group's opinion, despite the fact that there is not
an active trading market in shares of Lake Community common stock, a market does
exist and is most likely limited by combined local community influences of low
liquidity, ownership levels, and/or low investor market interest and awareness.
Based on the determined per share price of $7.25 (the reported transaction price
of the most recent trades in April 1998), the fair market value of Lake
Community is calculated accordingly:
    

           Per Share Value $7.25 X Total Outstanding Shares 1,240,546
                        = Fair Market Value $8,993,958.50

Consideration of Discounted Cash Flow Method

   
Banc Stock Group did not employ the discounted cash flow method in its analysis
of the Western Sierra/Lake Community merger even though it is aware that the
discounted cash flow is a commonly used valuation methodology. Discounted cash
flow analysis is most appropriate for companies which show relatively steady or
somewhat predictable streams of cash flow. Given the uncertainty in estimating
both Western Sierra's and Lake Community's future cash flows and a sustainable
long-term growth rate, Banc Stock Group considered a discounted cash flow
analysis inappropriate in its valuation. In addition, Banc Stock Group believes
that the provided 
    


                                       53
<PAGE>   63
   
methodologies proved adequate for determining the fairness of the Lake Community
conversion rate.
    

Valuation Summary.

   
<TABLE>
<CAPTION>
                                         Total Value      Per Share*
                                         -----------      ----------
<S>                                      <C>              <C>
        Multiple of Book Value Method    $15,768,000        $12.71
     Multiple of Equity Return Method    $11,490,000        $ 9.26
                  Market Value Method    $ 8,993,958.50     $ 7.25
                              Average    $12,083,986        $ 9.44
</TABLE>
- -------------
* Based upon 1,240,546 shares outstanding.
    

The fair market value of Lake Community, based on the averaging of total market
value methods of all of the shares would be $12,083,986. Realizing that the
current market value is trading at a multiple of 1.03 X book value, primarily
due to stock liquidity issues, market value analysis for premium calculation
purposes is being dropped from the averaging formula. A control price market
value premium of $13,629,000 is being utilized to reflect the approximate value
of Lake Community.

The individual cost associated on a per share basis would be $10.99.

   
In Banc Stock Group's opinion, based on the information compiled and analyzed
within the Lake Community fairness opinion, the actual valuation on a per share
basis, taking into account financial condition and performance, blockage
factors, discount/premium, liquidity, and number of shares being valued, is
$10.99 per share fair market value for a control price premium on outstanding
shares of Lake Community common stock or $9.43 fully diluted.
    

   
In performing its analyses, Banc Stock Group made numerous assumptions about
industry performance, general business and economic conditions and other
matters, many of which are beyond the control of Lake Community or Western
Sierra. The analyses performed are not necessarily indicative of actual values
or actual future results, which may be significantly more or less favorable than
suggested by those analyses. The analyses were prepared solely as part of Banc
Stock Group's analysis as to the fairness of the consideration to the holders of
shares of Lake Community common stock in the Western Sierra/Lake Community
merger. The analyses do not purport to be appraisals or to reflect the prices at
which Lake Community might actually be sold or the prices at which any
securities may trade at the present time or in the future.

A representative of Banc Stock Group participated in the May 27, 1998 meeting of
the Board of Directors of Lake Community and provided a verbal summary of the
Lake Community fairness opinion. Banc Stock Group provided the Lake Community
fairness opinion dated May 27, 1998 regarding the fairness, from a financial
point of view, of the consideration to be received by Lake Community in the
proposed Western Sierra/Lake Community merger, based on the information then
available.

UPDATED OPINION. On December 24, 1998, Western Sierra and Lake Community entered
into the First Amendment to Agreement and Plan of Reorganization and Merger
fixing the Lake
    

                                       54
<PAGE>   64
   
Community conversion rate at 0.6905. Banc Stock Group reviewed the fixed Lake
Community conversion rate of 0.6905 in comparison to its written opinion dated
May 27, 1998.

Based upon the market value of Western Sierra common stock and the number of
shares of Lake Community common stock outstanding as of February 9, 1999, which
were $16.75 and 1,298,246, respectively, and the Lake Community conversion rate
of .6905, the value of each share of Lake Community common stock in the Western
Sierra/Lake Community merger is $11.56. This value compares to the values
obtained using the methodologies employed by Banc Stock Group as follows:
    

   
<TABLE>
<CAPTION>
                                         Total Value           Per Share Value
                                         -----------           ---------------
<S>                                      <C>                   <C>
Actual Conversion Rate                   $15,020,706               $11.56
(as of February 9, 1999)

Multiple of Book Value Method            $15,768,000               $12.15
Multiple of Equity Return Method         $11,490,000               $ 8.85
Market Value Method                      $ 8,993,958               $ 7.25(1)
</TABLE>

- ----------------
(1) Based on 1,240,546 shares outstanding as of May 27, 1998.
    

   
Banc Stock Group delivered a written opinion dated as of December 24, 1998 that
as of the date of the opinion, the Lake Community conversion rate is fair, from
a financial point of view, to the holders of Lake Community common stock. Banc
Stock Group did not charge Lake Community for the written updated opinion. The
full text of Banc Stock Group's December 24, 1998 written opinion to Lake
Community's Board of Directors, which sets forth the assumptions made, matters
considered, and limitations of the review of Banc Stock Group, is attached to
this joint proxy statement/prospectus as Exhibit IV and is incorporated herein
by reference and should be read carefully and in its entirety.
    

FEDERAL AND CALIFORNIA INCOME TAX CONSEQUENCES

The following is a description of all material federal and California income tax
consequences of the Western Sierra/Lake Community merger. This following is not
a complete description of all tax consequences of the Western Sierra/Lake
Community merger. Each shareholder's individual circumstances may affect the tax
consequences of the Western Sierra/Lake Community merger to him or her. In
addition, the following description does not address the tax consequences of the
Western Sierra/Lake Community merger under applicable state or local laws, other
than California law. CONSEQUENTLY, EACH LAKE COMMUNITY SHAREHOLDER IS ADVISED TO
CONSULT HIS OR HER OWN TAX ADVISOR AS TO THE SPECIFIC TAX CONSEQUENCES OF THE
WESTERN SIERRA/LAKE COMMUNITY MERGER TO HIM OR HER.

   
An opinion of Perry-Smith & Co., LLP, independent accountants for Western Sierra
and Lake Community, has been delivered to Western Sierra which states that for
federal and related California income tax purposes, under current law, assuming
that the Western Sierra/Lake Community merger and related transactions will take
place as described in the Western Sierra/Lake Community agreement, the Western
Sierra/Lake Community merger will constitute a reorganization under Section 368
of the Code. Assuming the opinion is not withdrawn or changed due to changes in
laws, or otherwise, prior to the date of the Western Sierra/Lake Community
merger, material federal and related California income tax consequences of the
Western Sierra/Lake Community merger, in the opinion of Perry-Smith & Co., LLP,
will be as follows:

- -     No gain or loss will be recognized by Lake Community or Western Sierra in
      the Western Sierra/Lake Community merger;

- -     The basis and holding periods of the assets of Lake Community will carry
      over to Western Sierra;
    



                                       55
<PAGE>   65
- -     No gain or loss will be recognized by the holders of Lake Community common
      stock upon their receipt of Western Sierra common stock upon conversion of
      their Lake Community common stock;

- -     The receipt of cash in lieu of fractional share interests of Western
      Sierra common stock by holders of Lake Community common stock will result
      in gain or loss equal to the difference between the payment and the tax
      basis allocated to their fractional share interests. Whether the gain or
      loss will constitute capital gain or loss for a particular shareholder
      will depend upon whether that shareholder's Lake Community common stock is
      held as a capital asset at the date of the Western Sierra/Lake Community
      merger;

- -     The receipt of cash upon exercise of dissenters rights by holders of
      Western Sierra common stock or Lake Community common stock will result in
      gain or loss equal to the difference between the payment and the tax basis
      of their shares. Whether the gain or loss shall constitute capital gain or
      loss for a particular shareholder will depend upon: 1) whether that
      shareholder's Western Sierra common stock or Lake Community common stock
      is held as a capital asset at the date of the Western Sierra/Lake
      Community merger, and 2) whether the requirements of Section 302(b) of the
      Code are met in the shareholder's exchange;

- -     The tax basis of Western Sierra common stock received by the holders of
      Lake Community common stock will be the same as the tax basis of the Lake
      Community common stock converted in the Western Sierra/Lake Community
      merger; and

- -     The holding period of Western Sierra common stock in the hands of the
      shareholders of Lake Community will include the period during which the
      Lake Community common stock converted in the Western Sierra/Lake Community
      merger was held, provided the Lake Community common stock was held as a
      capital asset on the date of the Western Sierra/Lake Community merger.

   
In developing its opinion, Perry-Smith & Co., LLP relied upon facts and
representations provided to it by Western Sierra's management and Lake
Community's management and made no independent determination of the facts and
representations. The representations that Western Sierra's management and Lake
Community's management made were factual in nature. In addition, Perry-Smith &
Co., LLP's opinion was based upon the analysis of the current Code, the
California and Revenue Taxation Code, the Regulations thereunder, current case
law, and published rulings. The foregoing are subject to change, and any change
may be retroactively effective. If so, Perry-Smith & Co., LLP's opinion may be
affected and may not be relied upon. Perry-Smith & Co., LLP assumes no
responsibility to update its opinion after the date of the Western Sierra/Lake
Community merger because of such change. Further any variation or differences in
the facts or representations, for any reason, may affect Perry-Smith & Co.,
LLP's opinion, perhaps in an adverse manner, and make it inapplicable.
    


                                       56
<PAGE>   66

RIGHTS OF DISSENTING SHAREHOLDERS OF LAKE COMMUNITY AND WESTERN SIERRA

   
Shareholders of Lake Community and Western Sierra who do not vote in favor of
the Western Sierra/Lake Community merger either by voting against the Western
Sierra/Lake Community merger or by abstaining from voting are entitled to
certain rights under Chapter 13 of the California General Corporation Law
("Chapter 13"). Chapter 13 is reprinted in Exhibit VI to this joint proxy
statement/prospectus. Please note that all references in Chapter 13 and in this
section to a "shareholder" are to the record holder of dissenting shares. A
person having a beneficial interest in shares of Western Sierra common stock or
Lake Community common stock held of record in the name of another person, like a
broker or nominee, and wishing to exercise his or her dissenter's rights should
act promptly to cause the shareholder of record to follow the steps summarized
below properly and in a timely manner to perfect his or her dissenter's rights.
    

The following discussion is not a complete statement of the law relating to
dissenters' rights and is qualified in its entirety by Exhibit VI which is
incorporated herein by reference. This discussion and Exhibit VI should be
reviewed carefully by any shareholders who wish to exercise dissenters' rights
or who wish to preserve the right to do so since failure to comply with the
procedures set forth in Chapter 13 will result in the loss of dissenters'
rights.

   
If the Western Sierra/Lake Community merger is completed, those shareholders of
Western Sierra or Lake Community who elect to exercise their dissenters' rights
and who properly and timely perfect such rights will be entitled to receive the
"fair market value", in cash, of their shares. Pursuant to Section 1300(a) of
the California General Corporation Law, "fair market value" would be determined
as of May 27, 1998, the day before the first announcement of the terms of the
Western Sierra/Lake Community merger, excluding any appreciation caused by the
Western Sierra/Lake Community merger. See "Market Prices."
    

   
If the Western Sierra/Lake Community agreement is approved at the Western Sierra
Meeting and the Lake Community Meeting, Western Sierra and Lake Community will
within 10 days of the approval mail a notice to the holders of record of shares
of Western Sierra common stock and Lake Community common stock which were not
voted in favor of the Western Sierra/Lake Community agreement stating that the
required shareholder approval of the Western Sierra/Lake Community merger was
obtained (the "Lake Community Notice of Approval"). The Lake Community Notice of
Approval will set forth the price determined by Western Sierra or Lake
Community, as applicable, to represent the "fair market value" of any dissenting
shares, and will set forth the procedures (which are also described below) to be
followed by dissenting shareholders who wish to pursue further their statutory
rights. The procedures include a timely written demand that must be made on
Western Sierra or Lake Community, as applicable, in order to perfect the right
to dissent. The Lake Community Notice of Approval will include a copy of
Sections 1300 through 1304 of the California General Corporation Law.

Under Section 1301(a) of the California General Corporation Law, the statement
in the Lake Community Notice of Approval of the determination of the fair market
value of Western Sierra common stock or Lake Community common stock, as
applicable, will constitute an offer by Western Sierra or Lake Community, as
applicable, to purchase from its shareholders any dissenting shares at the price
stated, assuming the Western Sierra/Lake Community merger is completed. However,
the determination by Western Sierra or Lake Community, as applicable, of fair
market value is not binding on its shareholders, and if a dissenting shareholder
chooses not to
    


                                       57
<PAGE>   67
   
accept that offer, he or she has the right during a period of six months
following the mailing of the Lake Community Notice of Approval to commence a
lawsuit to have the fair market value, as described in Section 1300(a),
determined by a court. The fair market value as determined by the court in those
circumstances could be higher or lower than the amount offered by Western Sierra
or Lake Community, as applicable, in the Lake Community Notice of Approval and
any such determination would be binding on both the dissenting shareholder or
shareholders involved in the lawsuit and Western Sierra or Lake Community, as
applicable.
    

Any holder of record of Western Sierra Common Stock or Lake Community Common
Stock, as applicable, who wishes to exercise dissenters' rights, or to preserve
the right to do so, must make a written demand upon Western Sierra or Lake
Community, as applicable, that Western Sierra or Lake Community, as applicable,
pay the shareholder in cash the fair market value of his or her dissenting
shares, as defined above.

The demand by holders of Western Sierra common stock should be sent to Western
Sierra Bancorp, 4011 Plaza Goldorado Circle, Cameron Park, California 95682,
Attention: President. The written demand must state the number of shares held of
record by the shareholder and the number of shares which the shareholder demands
that Western Sierra purchase for cash and must also contain a statement of the
amount which the shareholder claims to be the fair market value of the
dissenting shares, as of the day before the announcement of the proposed Western
Sierra/Lake Community merger. That statement will constitute an offer by the
shareholder to sell his or her dissenting shares to Western Sierra at that
price. The certificates for shares of Western Sierra common stock must also be
included with the written demand.

The demand by holders of Lake Community common stock should be sent to Lake
Community Bank, 805 Eleventh Street, Lakeport, California 95453, Attention:
President. The written demand must state the number of shares held of record by
the shareholder and the number of shares which the shareholder demands that Lake
Community purchase for cash and must also contain a statement of the amount
which the shareholder claims to be the fair market value of the dissenting
shares, as of the day before the announcement of the proposed Western
Sierra/Lake Community merger. That statement will constitute an offer by the
shareholder to sell his or her dissenting shares to Lake Community at that
price. The certificates for shares of Lake Community common stock must also be
included with the written demand.

   
A proxy card directing a vote against the Western Sierra/Lake Community merger
is not sufficient to meet the requirements for a written demand. The written
demand and the dissenting shareholder's share certificate(s) must be received by
Western Sierra or Lake Community, as applicable, within thirty (30) days after
the date on which the Lake Community Notice of Approval was mailed to the
shareholder. The certificate(s) will be stamped or endorsed with a statement
that the shares are dissenting shares and returned to the dissenting
shareholder.

In addition, those shareholders may not have voted in favor of approval of the
Western Sierra/Lake Community agreement, either in person or by proxy. A
shareholder may vote in favor of approval of the Western Sierra/Lake Community
agreement as to part of his or her shares without jeopardizing the dissenting
status of those shares not voted in favor of approval of the Western Sierra/Lake
Community agreement. However, a shareholder should clearly specify the number of
shares not voted in favor of approval of the Western Sierra/Lake Community
agreement.
    


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<PAGE>   68
   
If the shareholder votes in favor of approval of the Western Sierra/Lake
Community agreement, either in person or by proxy, or if Western Sierra or Lake
Community, as applicable, does not receive his or her written demand within
thirty (30) days after the Lake Community Notice of Approval was mailed to the
shareholder, or if the shareholder otherwise fails to comply in a timely manner
with the procedures of Chapter 13 as described herein or contained in Exhibit
VI, that shareholder shall be bound by the terms of the Western Sierra/Lake
Community agreement and shall lose the right to receive the fair market value of
his or her shares in cash.
    

Dissenting shares may lose their status as such if any of the following occurs:
the Western Sierra/Lake Community merger is abandoned; the shares are
transferred before being submitted to Western Sierra or Lake Community, as
applicable, for endorsement; the shareholder withdraws his or her demand with
the consent of Western Sierra or Lake Community, as applicable, in the absence
of an agreement between the shareholder and Western Sierra or Lake Community, as
applicable, as to the price of his or her shares; or the shareholder fails to
file suit against Western Sierra or Lake Community, as applicable, or otherwise
fails to become a party to the suit within six months following the mailing of
the Lake Community Notice of Approval.

   
Western Sierra or Lake Community, as applicable, will pay the fair market value
of dissenting shares at the later of 30 days following an agreement as to the
amount to be paid or within 30 days after all statutory and contractual
conditions to the Western Sierra/Lake Community merger are satisfied; provided
that in the event that the payment cannot be made due to the provisions set
forth in California Financial Code Section 640 et seq. or California General
Corporation Law Section 500 et seq. dealing with restrictions on a corporation's
ability to distribute funds or assets to a shareholder, then those shareholders
holding dissenting shares shall become creditors of Western Sierra or Lake
Community, as applicable, and their claims will be payable as soon as
permissible under the provisions. See "Description of the Capital Stock of
Western Sierra, Lake Community and Roseville" and "Market Prices."

The foregoing summarizes certain provisions of Chapter 13 of the California
General Corporation Law, but shareholders of Western Sierra or Lake Community,
as applicable, considering the exercise of their rights under those sections
should read in full Chapter 13, which is reproduced in Exhibit VI and should
consult their own legal advisors. The receipt of cash payment for dissenting
shares will result in recognition of gain or loss for federal income tax
purposes by the dissenting shareholders. See "Description of the Western
Sierra/Lake Community Merger--Federal and California Income Tax Consequences,"
above.
    

   
    


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<PAGE>   69

   
                                 Description of
                       the Western Sierra/Roseville Merger

GENERAL

This section of the joint proxy statement/prospectus contains information
furnished by the Boards of Directors of Western Sierra and Roseville in their
respective solicitations of Proxies for the Western Sierra Meeting and the
Roseville Meeting to approve the Western Sierra/Roseville agreement. The Western
Sierra/Roseville agreement sets out the terms of the merger of Roseville with
and into Western Sierra.

The Boards of Directors of Western Sierra and Roseville are asking their
respective shareholders to vote upon the Western Sierra/Roseville agreement.
Under the terms of Western Sierra/Roseville agreement, Roseville will be merged
with Western Sierra and Western Sierra shall be the surviving corporation of the
Western Sierra/Roseville merger. Upon completion of the Western Sierra/Roseville
merger, each share of Roseville common stock, other than shares held by
shareholders who exercise and perfect dissenter's rights, shall be converted
into the right to receive from Western Sierra the Roseville conversion rate of
1.2110 shares of Western Sierra common stock. See "Description of the Western
Sierra/Roseville Merger--Roseville Conversion Rate and Exchange of Shares and
Options." As a result of the Western Sierra/Roseville merger, Roseville 1st
National Bank will become a wholly-owned subsidiary of Western Sierra.
    

   
A copy of the Western Sierra/Roseville agreement is attached to this joint proxy
statement/prospectus as Exhibit II and incorporated herein by this reference.
    

BACKGROUND AND REASONS FOR THE WESTERN SIERRA/ROSEVILLE MERGER

   
WESTERN SIERRA'S ANALYSIS. During the past two years, Western Sierra has been
expanding its services to the businesses and residents of the El Dorado and
Placer Counties through its branch operations and in Sacramento County through
its loan production office. In early 1998 Western Sierra had preliminary
discussions with Roseville regarding a potential merger of the two institutions.
After consideration, Western Sierra's Board of Directors and Senior Management
determined that the merger of Roseville with Western Sierra provided an
opportunity for Western Sierra to increase its services to the Placer County
market area through the acquisition of an additional bank with offices in
Roseville and Granite Bay. In addition, Western Sierra's Board of Directors
believes the Western Sierra/Roseville merger will help Western Sierra to achieve
increased benefits through asset diversification; will provide an opportunity to
increase the number of outstanding shares and liquidity of Western Sierra common
stock. Western Sierra's Board of Directors believes that having more
shareholders and more outstanding shares of Western Sierra common stock will
increase the liquidity of the shares of Western Sierra common stock owned by
Western Sierra and Roseville shareholders after the Western Sierra/Roseville
merger is completed. In addition, management of Western Sierra estimated that
the Western Sierra and Lake Community merger would be accretive to the
shareholders based upon an
    


                                       60
<PAGE>   70

   
estimated increase in earnings of 10% per year, based upon historical experience
of Western Sierra and Roseville and cost-savings resulting from the combination
of data processing, reduction in professional fees, reduction in personnel costs
and other noninterest expense. This estimate was based on an internal analysis
prepared by Western Sierra's management and the actual results may vary
significantly for numerous reasons, including the factors set forth in "Risk
Factors" at page 18.

The Western Sierra Board of Directors also considered the advantages of
remaining independent and the potential problem of management incompatibility,
and the inability to combine the operations of Roseville and Western Sierra.
    

After discussions between Western Sierra and Roseville, the parties executed a
Letter of Intent dated June 11, 1998, whereby Western Sierra would acquire
Roseville through a stock-for-stock merger transaction. Western Sierra would
then operate Roseville 1st National Bank as a wholly-owned bank subsidiary.

The Board of Directors of Western Sierra believes the Western Sierra/Roseville
merger to be in the best interests of Western Sierra, its shareholders and
banking customers. The Board of Directors of Western Sierra expects Western
Sierra as the Surviving Corporation of the Western Sierra/Roseville merger to be
stronger in terms of capital, management, growth opportunities and profitability
than is either corporation at present. In addition, the Western Sierra/Lake
Community merger will enable Western Sierra to acquire new technologies that
would otherwise be cost prohibitive. These new technologies will improve
customer service and increase the efficiency of Western Sierra and Lake
Community.

   
Both Western Sierra and Roseville have been profitable and have shown strong
asset growth over the past several years. Following the Western Sierra/Roseville
merger, Roseville 1st National Bank will have the advantage of the consolidation
and centralization of certain management functions and certain resulting
economies of scale. Management of Western Sierra estimated that the costs
savings as a result of the Western Sierra/Roseville merger would be
approximately 15-18% of Roseville's noninterest expense based upon reduction in
personnel costs, consolidation of data processing and reduction in professional
fees and other noninterest expense which are normal for bank merger
transactions. This estimate was based on an internal analysis prepared by
Western Sierra's management and the actual results may vary significantly for
numerous reasons, including the factors set forth in "Risk Factors" at page 18.
Furthermore, it is believed that the Western Sierra/Roseville merger will result
in a bank which will be a strong and viable independent financial institution
better able to compete with the major banks in the areas now served by
Roseville.
    

   
ROSEVILLE'S ANALYSIS. Beginning in the early Spring of 1998, Richard C. Seeba,
President and Chief Executive Officer of Roseville, and Gary D. Gall, President
of Western Sierra, met and informally discussed a possible business combination
between Roseville and Western Sierra. Following the initial meeting, additional
meetings and discussions were held by Richard C. Seeba, Thomas Manz, Chairman of
the Board of Roseville, Douglas A. Nordell, Executive Vice President and Chief
Operating Officer of Roseville, and Kirk Doyle, a director of Roseville, with
Gary D. Gall, Joseph A. Surra, Chairman of the Board of Western Sierra, and
Robert G. Albrecht and Osvaldo I. Scariot, directors of Western Sierra.
    


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<PAGE>   71
   
In April, 1998, Ted Mason, the President of Humboldt Bancorp ("Humboldt"), a
bank holding company with its principal operations in Eureka, California,
contacted Mr. Seeba regarding a possible business combination between Roseville
and Humboldt.

On April 14, 1998, a special meeting of the Roseville Board of Directors was
held to consider an initial proposal from Western Sierra regarding a business
combination between Roseville and Western Sierra. Mr. Seeba presented the terms
of the proposal which provided for the exchange of Roseville common stock for
Western Sierra common stock in a merger based on the book value of Western
Sierra common stock and Roseville common stock. The Roseville Board of Directors
discussed Western Sierra common stock, including the market therefor and
discussed certain potential benefits of a business combination with another bank
holding company, including:

- -     the liquidity that could be provided to Roseville's shareholders as a
      result of owning shares of an entity with a more active trading market for
      its common stock and more shareholders,
    

- -     the enhancement of Roseville's competitiveness and its ability to serve
      its customers, depositors, creditors, other constituents and the
      communities in which it operates, and

- -     the cost savings and operational synergies which could be achieved through
      consolidation of back office and other functions and economies of scale.

The Roseville Board of Directors also discussed the advantages of remaining a
locally-owned and locally-controlled financial institution.

At the April 14, 1998 meeting, Mr. Seeba informed the Roseville Board of
Directors that Humboldt was also interested in discussing a possible business
combination with Roseville. The Roseville Board of Directors resolved that
Roseville should further analyze the proposal from Western Sierra and open
discussions with Humboldt regarding a possible business combination. The
Roseville Board of Directors also decided to retain Roseville's auditors to
review and analyze certain financial aspects of Western Sierra proposal.

On May 2, 1998, a mutual confidentiality agreement was entered into between
Roseville and Western Sierra and detailed financial and business information was
exchanged. Western Sierra and Roseville each commenced a detailed due diligence
investigation. In its due diligence investigation, members of Roseville's senior
management conducted a review of Western Sierra's loan portfolio.

During May 1998, members of senior management of Roseville met with
representatives of Humboldt to discuss a possible business combination between
Roseville and Humboldt. On May 20, 1998, Mr. Seeba, Mr. Manz and Mr. Nordell met
with Ted Mason and other senior officers of Humboldt at Humboldt's offices in
Eureka, California, and were provided with general information regarding
Humboldt's business and operations and its interest in the Sacramento/Roseville
market. At the same time, members of Roseville's senior management continued
discussions with Western Sierra regarding its proposal.

   
At the May 21, 1998 meeting of the Roseville Board of Directors, Gary D. Gall
and Joseph A. Surra were introduced to the Roseville Board of Directors and gave
the Roseville Board of 
    


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<PAGE>   72

   
Directors a presentation of their views regarding a business combination between
Roseville and Western Sierra, including the earnings potential from combining
back office operations and sharing costs associated with delivering new products
while retaining the market identity and community presence of the individual
banks owned by Western Sierra. Following the presentation, Mr. Gall and Mr.
Surra answered questions from the Roseville directors. After Mr. Gall and Mr.
Surra departed, the Roseville Board of Directors further discussed the issues
concerning a business combination between Roseville and Western Sierra.

On June 1, 1998, a special meeting of the Roseville Board of Directors was held
to consider a letter of interest from Humboldt regarding a business combination
with Roseville and to compare the terms of Humboldt's letter of interest to the
Western Sierra proposal. At the meeting, Mr. Seeba described the meetings with
representatives of Humboldt and the aspects of Humboldt's operation they were
able to observe during their visit. The Roseville Board of Directors discussed
the terms of the Humboldt proposal which, similar to Western Sierra proposal,
provided for an exchange of Humboldt common stock for Roseville common stock in
a merger based on the book value of Humboldt common stock and Roseville common
stock. The Roseville Board of Directors compared the common stock of Humboldt to
Western Sierra common stock and noted that both Humboldt common stock and
Western Sierra common stock were trading at approximately twice book value and
were traded through market makers and that there was slightly more trading
volume in Western Sierra common stock. The Roseville Board of Directors also
compared Western Sierra's and Humboldt's respective operations and management
philosophies. The Roseville Board of Directors discussed the customer service
and operational issues raised by Humboldt's geographic location and determined
that although Humboldt and Western Sierra were both viable candidates for a
business combination, a business combination with Western Sierra would be more
compatible with Roseville because of Western Sierra's close geographic proximity
to the communities served by Roseville's operations. The Roseville Board of
Directors determined that the close geographic proximity could facilitate
consolidation of operations, achievement of economies of scale and delivery of
customer services which could, in turn, facilitate future growth and increase
earnings potential. The Roseville Board of Directors also determined that it
could increase business prospects. In addition, the Roseville Board of Directors
compared the Humboldt and Western Sierra proposals regarding management of the
acquiring company after the business combination and determined that Western
Sierra proposal, which provided that Roseville would have four seats on Western
Sierra Board of Directors following the Western Sierra/Roseville merger, offered
greater board representation than the Humboldt proposal which provided for two
seats on the Humboldt board after the proposed business combination. Following
comparison of the two proposals, the Roseville Board of Directors determined
that it was in the best interests of Roseville's shareholders to terminate
discussions with Humboldt and to continue negotiations with Western Sierra.
    

   
On June 10, 1998, a special meeting of the Roseville Board of Directors was held
to discuss the results of Roseville's due diligence investigation and a proposed
nonbinding letter of intent to be entered into between Roseville and Western
Sierra. The Roseville Board of Directors discussed the results of Roseville's
due diligence investigation, including the loan review conducted by members of
Roseville's senior management. The Roseville Board of Directors determined that
from a due diligence perspective, Roseville was prepared to execute a letter of
intent. The Roseville Board of Directors then discussed the terms of the
proposed letter of intent which provided that Roseville would be merged with and
into Western Sierra and, as a result, Roseville
    


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<PAGE>   73

   
1st National Bank would become a wholly-owned subsidiary of Western Sierra.
Shareholders of Roseville would receive shares of Western Sierra common stock in
exchange for their shares of Roseville common stock. The exchange formula would
be based on the book value per share of Roseville common stock and Western
Sierra common stock as of the close of business in the month prior to the
completion of the Western Sierra/Roseville merger. The Roseville Board of
Directors determined that, based on the terms of the letter of intent, including
the fact that it was nonbinding, and other factors, like the Western
Sierra/Roseville merger being structured to be treated as tax-free
reorganization under Section 368 of the Code and as a pooling of interests for
accounting purposes, it was in the best interests of Roseville's shareholders to
enter into the letter of intent and proceed to negotiate a definitive agreement
with Western Sierra. Pursuant to the letter of intent, Roseville agreed to
negotiate exclusively with Western Sierra for a limited period in order to
attempt to reach agreement on the terms and conditions of a legally binding
definitive acquisition agreement.
    

   
On July 1, 1998, the Board of Directors of Roseville met again to discuss the
proposed transaction. A representative of Pillsbury, Madison & Sutro LLP
("Pillsbury"), special counsel to Roseville, attended the meeting. Roseville
senior management attended and made presentations to the Roseville Board of
Directors on the status of the negotiations and discussions, the principal terms
of the proposed Western Sierra/Roseville agreement, the remaining open issues
under negotiation, the required regulatory approvals and board composition and
management of Roseville and Western Sierra following the Western
Sierra/Roseville merger. The Roseville Board of Directors also considered the
material terms of the proposed salary continuation agreements for Messrs. Seeba,
Nordell and Warren that Western Sierra expected to assume in the Western
Sierra/Roseville merger, and the terms of a proposed director/shareholder
agreement between each of Roseville's directors and Western Sierra.
    

   
At a special meeting of the Roseville Board of Directors on July 6, 1998, the
Board of Directors of Roseville unanimously resolved to approve the Western
Sierra/Roseville agreement and the transactions contemplated thereby, subject to
receipt and approval of a favorable opinion as to the fairness of the
consideration to be received by Roseville shareholders in the Western
Sierra/Roseville merger. A representative of Pillsbury attended the meeting. The
Roseville Board of Directors also determined that the four directors of
Roseville who would serve on Western Sierra Board of Directors would be Kirk
Doyle, Howard ("Skip") Jahn, Thomas Manz and Richard C. Seeba.
    

   
On July 6, 1998, the parties completed their negotiations and discussions and
Roseville and Western Sierra entered into the Western Sierra/Roseville
agreement. For convenience, the Western Sierra/Roseville agreement was dated as
of July 2, 1998.
    

   
Following the July 6, 1998 Roseville Board of Directors meeting, Roseville
senior executives consulted with a representative of Pillsbury and conferred
with some of the directors about the selection of an investment banking firm to
render a fairness opinion to the Roseville Board of Directors. After that, The
Banc Stock Group, Inc. was engaged.

On or about August 26, 1998, Banc Stock Group delivered its written opinion to
the Roseville Board of Directors to the effect that, as of the date of the
opinion, the Roseville conversion rate as set forth in the Western
Sierra/Roseville agreement is fair, from a financial point of view, to the
holders of Roseville common stock.
    


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<PAGE>   74

   
On September 17, 1998, the Roseville Board of Directors met again to consider,
among other things, Banc Stock Group's written fairness opinion dated August 26,
1998. The Roseville Board of Directors conducted a thorough discussion of Banc
Stock Group's fairness opinion and determined that the condition to its approval
set forth in the Western Sierra/Roseville agreement had been satisfied. The
Roseville Board of Directors affirmed its approval of the Western
Sierra/Roseville agreement and resolved that the Western Sierra/Roseville
agreement and the transactions contemplated thereby are fair to, and in the best
interests of, Roseville and its shareholders, and to recommend to the
shareholders of Roseville that they approve and authorize the Western
Sierra/Roseville agreement.
    

   
In determining to approve the Western Sierra/Roseville agreement and recommend
that Roseville's shareholders approve and authorize the Western Sierra/Roseville
agreement, the Roseville Board of Directors consulted with Roseville's senior
management, as well as its legal counsel, and considered a number of factors,
including:
    

   
- -     the increased liquidity to be provided to Roseville's shareholders by
      receiving shares of Western Sierra common stock in exchange for their
      shares of Roseville common stock because of the more active trading market
      for Western Sierra common stock and increased number of shareholders of 
      Western Sierra following the Western Sierra/Roseville merger;
    

- -     the economic conditions and prospects for the markets in which Roseville
      operates, and competitive pressures in the financial services industry in
      general and the banking industry in particular;

- -     the enhancement of Roseville's competitiveness and its ability to serve
      its customers, depositors, creditors, other constituents and the
      communities in which it operates as a result of a business combination
      with another Northern California bank holding company, like Western
      Sierra;

- -     information concerning the business, results of operations, asset quality
      and financial condition of Roseville and Western Sierra on a stand-alone
      and combined basis, and the future growth prospects of Roseville and
      Western Sierra following the Western Sierra/Roseville merger;

   
- -     the 15-18% cost savings and operational synergies estimated by Western
      Sierra which the management of Roseville believes may be achieved as a
      result of the Western Sierra/Roseville merger;
    

- -     an assessment that, in the current economic environment, expansion through
      acquisition by another financial institution is most economically
      advantageous to Roseville's shareholders when compared to other
      alternatives like de novo branch openings or branch acquisitions;

   
- -     the terms and conditions of the Western Sierra/Roseville agreement and
      related agreements;

- -     Banc Stock Group's analysis of the financial condition, results of
      operations, business, prospects and stock price of Roseville and
      comparison of Roseville to other banks and bank holding companies
      operating in its industry;
    


                                       65
<PAGE>   75
   
- -     an analysis of the terms of other acquisitions in the banking industry;

- -     the opinion of Banc Stock Group to the effect that, as of the date of the
      opinion, the Roseville conversion rate is fair, from a financial point of
      view, to the holders of Roseville common stock;

- -     the expectation that the Western Sierra/Roseville merger will constitute a
      tax-free reorganization for federal income tax purposes; and

- -     the expectation that the Western Sierra/Roseville merger will be treated
      as a pooling of interests for accounting purposes.
    

The foregoing discussion of the factors considered by the Roseville Board of
Directors is not intended to be exhaustive. In view of the variety and nature of
the factors considered by the Roseville Board of Directors, the Roseville Board
of Directors did not find it practicable to assign relative weights to the
specific factors considered in reaching its decision.

THE BOARD OF DIRECTORS OF ROSEVILLE HAS UNANIMOUSLY APPROVED THE WESTERN
SIERRA/ROSEVILLE AGREEMENT AND RECOMMENDS A VOTE FOR APPROVAL AND ADOPTION OF
THE WESTERN SIERRA/ROSEVILLE AGREEMENT.

ROSEVILLE CONVERSION RATE AND EXCHANGE OF SHARES AND OPTIONS

   
ROSEVILLE CONVERSION RATE. Each share of Roseville common stock which is
outstanding immediately prior to the Western Sierra/Roseville merger (other than
shares to which its holders have exercised and perfected dissenters' rights)
will automatically be canceled and will be converted into the right to receive
from Western Sierra the Roseville conversion rate of 1.2110 shares of Western
Sierra common stock for each share of Roseville common stock.

The Boards of Directors of Western Sierra and Roseville determined the formula 
for calculating the Roseville conversion rate in an arms length negotiation. 
Specifically, the formula used the November 30, 1998 per share book value of 
Western Sierra common stock, as adjusted below, and the per share book value of 
Roseville common stock, as adjusted below. The calculation of the Roseville 
conversion rate is as follows:

1.   The Boards of Directors of Western Sierra and Roseville estimated their
     merger expenses, net of taxes, to be $204,752 and $48,956, respectively.
     These estimates, together with an adjustment to the value of Roseville's
     tax net operating loss carryforward of $27,838, were then subtracted from
     their respective shareholders' equity accounts to arrive at adjusted
     balances at November 30, 1998 of $10,121,073 and $4,682,095 respectively.
     The shareholders' equity accounts of both companies were then adjusted to
     reflect the exercise of any outstanding stock options that would be
     exercisable at the time of the Western Sierra/Roseville merger which had an
     exercise price below the per share book value. The adjustment for Western
     Sierra was $512,519 and the adjustment for Roseville was $196,000. These
     amounts were then added to the respective shareholders' equity accounts.

2.   The new totals of $10,633,592 for Western Sierra's shareholders' equity and
     $4,878,095 for Roseville's shareholders' equity were then divided by the
     number of shares outstanding for each respective company, as adjusted to
     reflect the exercise of the stock options included in the calculation
     above. This resulted in a total of 1,047,491 shares being used in Western
     Sierra's calculation and 396,805 shares being used in Roseville's
     calculation.

3.   After the above calculations were completed, Western Sierra's book value
     per share equaled $10.1515 and Roseville's book value per share equaled
     $12.2934. Roseville's book value per share was then divided by Western
     Sierra's book value per share and the result was the Roseville conversion
     rate of 1.2110 shares of Western Sierra common stock.

Assuming the holders of all of the shares of Roseville common stock convert
their shares into Western Sierra common stock at the Roseville conversion rate
of 1.2110 there would be approximately 1,430,493 shares of Western Sierra common
stock outstanding immediately following the completion of the Western
Sierra/Roseville merger, comprised of 981,448 outstanding shares of Western
Sierra common stock and approximately 449,045 shares of Western Sierra common
stock issued as a result of the Roseville conversion rate.
    

No fractional shares of Western Sierra common stock will be issued in the
Western Sierra/Roseville merger. Instead, shareholders of Roseville will receive
an amount in cash equal to the product (rounded to the nearest hundredth)
obtained by multiplying (a) Western Sierra Market Value Per Share by (b) the
fraction of a share of Western Sierra common stock to which the holder would
otherwise be entitled. "Western Sierra Market Value Per Share" means the last
trade price of Western Sierra common stock prior to the date of completion of
the Western Sierra/Roseville merger.

EXCHANGE PROCEDURE. Each holder of a certificate representing shares of
Roseville common stock shall surrender the certificate, duly endorsed as Western
Sierra may require, to American Securities Transfer and Trust as the exchange
agent (the "Roseville Exchange Agent"). Each holder shall then receive from
Western Sierra in exchange



                                       66
<PAGE>   76

- -     a certificate representing the number of whole shares of Western Sierra
      common stock to which the holder shall have become entitled based upon the
      Roseville conversion rate and

- -     a check for any fractional share.

   
Upon surrender for cancellation to the Roseville Exchange Agent of one or more
Roseville Certificates for shares of Roseville common stock, accompanied by the
Transmittal Letter which will be sent to the Roseville shareholders, the
Roseville Exchange Agent shall, promptly after the date of completion of the
Western Sierra/Roseville merger, deliver to each holder of the surrendered
Roseville Certificates new certificates representing the appropriate number of
shares of Western Sierra common stock ("New Certificates") and checks for
payment of fractional shares.
    

Until Roseville Certificates have been surrendered and exchanged, each
outstanding Roseville Certificate shall be deemed for all corporate purposes to
represent the number of shares of Western Sierra common stock into which the
number of shares of Roseville common stock shown thereon will be converted. No
dividends or other distributions which are declared on Western Sierra common
stock will be paid to persons otherwise entitled to receive the same until
Roseville Certificates have been surrendered in exchange for New Certificates in
the manner herein provided, but upon the surrender, the dividends or other
distributions, from and after the completion of the Western Sierra/Roseville
merger, will be paid to those persons in accordance with the terms of the
Western Sierra common stock. In no event shall the persons entitled to receive
the dividends or other distributions be entitled to receive interest on the
dividends or other distributions.

No shareholder will be liable for any transfer taxes unless a certificate for
Western Sierra common stock is to be issued in a name other than the
shareholder's. It shall be a condition of the issuance that the person
requesting the issuance shall properly endorse the Roseville Certificates and
shall pay to Western Sierra or the Roseville Exchange Agent any transfer taxes
owed for that transfer or for any prior transfer or establish to the
satisfaction of Western Sierra or the Roseville Exchange Agent that the taxes
have been paid or are not payable.

If any holder of Roseville common stock is unable to surrender his or her
Roseville Certificates because the certificates have been lost or destroyed, the
holder may instead deliver an affidavit and indemnity undertaking in form and
substance and, if required, with surety satisfactory to the Roseville Exchange
Agent and Western Sierra.

   
EXCHANGE OF OUTSTANDING STOCK OPTIONS FOR SHARES OF ROSEVILLE COMMON STOCK. All
outstanding rights to acquire Roseville common stock pursuant to existing stock
options for shares of Roseville common stock will be converted into and become
outstanding rights to acquire shares of Western Sierra common stock at the
Roseville conversion rate with a corresponding adjustment in the option price.

INTERESTS OF CERTAIN PERSONS IN THE WESTERN SIERRA/ROSEVILLE MERGER AND MATERIAL
CONTRACTS WITH ROSEVILLE AND ITS AFFILIATES

In considering the recommendations of the Boards of Directors of Western Sierra
and Roseville for approval of the Western Sierra/Roseville merger, the
shareholders of Western Sierra and 
    


                                       67
<PAGE>   77
   
Roseville should be aware that certain members of the Boards of Directors of
Western Sierra and Roseville may have conflicts of interest in the Western
Sierra/Roseville merger.

Upon completion of the Western Sierra/Roseville merger, four directors of
Roseville shall be appointed as directors of Western Sierra to serve until the
next annual meeting of shareholders of Western Sierra and until their successors
are elected and qualified. At the completion of the Western Sierra/Roseville
merger, there shall be ten members of the Board of Directors of Roseville 1st
National Bank; two will be selected by Western Sierra, and eight will be current
directors of Roseville 1st National Bank. At the completion of the Western
Sierra/Roseville merger, the Board of Directors of Western Sierra National Bank
shall be increased by two persons to be selected by Roseville. The Chairman of
the Board of Western Sierra shall be an attendee of the Board of Directors of
Roseville 1st National Bank and all committees of the Board of Directors of
Roseville 1st National Bank. It is presently anticipated that Kirk Doyle, Howard
"Skip" Jahn, Thomas Manz and Richard C. Seeba will be appointed as directors of
Western Sierra, that Stephen F. Caulkins, Mark Davis, Kirk Doyle, Skip Jahn,
Ernest E. Johnson, M.D., Thomas Manz, Randall Scagliotti and Richard C. Seeba
will continue to serve as directors of Roseville 1st National Bank, and that
Gary D. Gall and Richard Golemon will be appointed as new directors of Roseville
1st National Bank. It is also currently anticipated that Thomas Manz and Richard
C. Seeba will be selected by Roseville to join the Board of Directors of Western
Sierra National Bank.
    

In addition, each director of Roseville has entered into a director's agreement
with Western Sierra which provides that the director agrees:

   
1.    to recommend that the shareholders of Roseville approve the Western
      Sierra/Roseville agreement and to advise Roseville's shareholders to
      reject any subsequent proposal or offer received by Roseville relating to
      any purchase, sale, acquisition, merger or other form of business
      combination involving Roseville or any of its assets, equity securities or
      debt securities and to proceed with the transactions contemplated by the
      Western Sierra/Roseville agreement, unless Roseville's Board of Directors
      has been advised by outside legal counsel that, in the exercise of the
      director's fiduciary duties, a director of Roseville should not take that
      action;


2.    not to take any action that will alter or affect in any way the right to
      vote the shares of Roseville common stock, except (x) with the prior
      written consent of Western Sierra, (y) to change that right from that of a
      shared right of the director to vote the shares of Roseville common stock
      to a sole right of the director to vote the shares of Roseville common
      stock or (z) in connection with a transfer to a revocable intervivos trust
      under which the director is a grantor and trustee; and

3.    to vote all shares of Roseville common stock as to which the director has
      voting power in favor of the Western Sierra/Roseville merger.

The director's agreements also provide that the directors, other than Messrs.
Richard Seeba and Kenneth Leung, shall not for a period of two years after the
completion of the Western Sierra/Roseville merger or until the director (a) if a
director of Roseville 1st National Bank and/or Western Sierra immediately after
the completion of the Western Sierra/Roseville merger, is removed or not
reelected to such position or positions or (b) if a director emeritus of
Roseville 
    



                                       68
<PAGE>   78
   
1st National Bank immediately after the completion of the Western Sierra/
Roseville merger, is removed as a director emeritus, which ever occurs first,
directly or indirectly, without the prior written consent of Western Sierra, own
more than 1% of, organize, manage, operate, finance or participate in the
ownership, management, operation or financing of, or be connected as an officer,
director, employee, principal, agent or consultant to any financial institution
whose deposits are insured by the FDIC that has its head offices or a branch
office within 50 miles of the head office of Roseville or Roseville 1st National
Bank. Mr. Kirk Doyle's agreement provides an exception for Placer Savings Bank.
However, Mr. Doyle has agreed not to solicit any customers of Roseville 1st
National Bank or Western Sierra for the benefit of Placer Savings Bank.
    

   
Gary D. Gall, who is currently the President and Chief Executive Officer of
Western Sierra and Western Sierra National Bank, and Lesa Fynes, who is
currently the Controller of Western Sierra and Senior Vice President and Chief
Financial Officer of Western Sierra National Bank, are expected to serve in the
same positions with Western Sierra and Western Sierra National Bank following
the Western Sierra/Roseville merger. Stephanie M. Marsh, who is currently the
Senior Vice President and Chief Administrative Officer of Western Sierra
National Bank, and Kirk Dowdell, who is currently the Senior Vice President and
Chief Credit Officer of Western Sierra National Bank, are expected to serve in
those positions with both Western Sierra and Western Sierra National Bank
following the Western Sierra/Roseville merger. In addition, Richard C. Seeba,
who is currently serving as the President and Chief Executive Officer of
Roseville and Roseville 1st National Bank, will continue to serve in those
capacities with Roseville 1st National Bank and will serve as an Executive Vice
President of Western Sierra, and Thomas C. Warren, who is currently serving as
the Senior Vice President and Chief Financial Officer of Roseville and Roseville
1st National Bank, will serve as the Senior Vice President and Chief Financial
Officer of Western Sierra and Roseville 1st National Bank following the Western
Sierra/Roseville merger. Douglas A. Nordell, who is currently the Executive Vice
President and Chief Operating Officer of Roseville and Roseville 1st National
Bank, has accepted the position of President and Chief Executive Officer of Lake
Community, and is not expected to be employed by Roseville 1st National Bank
following the Western Sierra/Roseville merger. It is anticipated that most other
present officers and employees of Western Sierra and Roseville 1st National Bank
will initially continue in the same or similar capacities with Western Sierra
and Roseville 1st National Bank at the same or comparable compensation levels.
For information regarding Western Sierra's employee benefit plans see the
descriptions of Western Sierra's employee benefit plans below in "Description of
Western Sierra--Management--Compensation of Directors and Executive Officers."
For information regarding Roseville 1st National Bank's employee benefit plans
see the descriptions of Roseville 1st National Bank's employee benefit plans
below in "Description of Roseville--Management--Compensation of Directors and
Executive Officers."

REGULATORY APPROVAL AND COMPLETION OF THE  WESTERN SIERRA/ROSEVILLE MERGER

The Western Sierra/Roseville merger was approved by the FRB on September 17,
1998. THE APPROVAL OF THE WESTERN SIERRA/ROSEVILLE MERGER BY THE FRB IS NOT A
RECOMMENDATION OR ENDORSEMENT OF THE WESTERN SIERRA/ROSEVILLE MERGER BY THE FRB.
The completion of the Western Sierra/Roseville merger is anticipated to take
place on a day ("Roseville Closing Date") which shall not, however, be later
than thirty (30) days after
    


                                       69
<PAGE>   79
   
- -     the receipt of the last required regulatory approval and expiration of all
      applicable waiting periods, and

- -     satisfaction of the conditions precedent to the obligations of each of
      Western Sierra and Roseville or the written waiver of those conditions by
      Western Sierra or Roseville, as applicable.

It is presently anticipated that the Western Sierra/Roseville merger will be
completed during the first quarter of this year.

CONDITIONS TO THE WESTERN SIERRA/ROSEVILLE MERGER

The Western Sierra/Roseville agreement provides that the completion of the
Western Sierra/Roseville merger is subject to various conditions which must be
satisfied, including the following:

1.    The Western Sierra/Roseville agreement and the Western Sierra/Roseville
      merger shall have been approved by the vote of the holders of a majority
      of the outstanding stock of Western Sierra and Roseville, respectively;
    

2.    All approvals or permits required to be obtained, and all waiting periods
      required to expire, for the Western Sierra/Roseville merger shall have
      been obtained or expired, without the imposition of any materially
      burdensome condition on any party to the Western Sierra/Roseville merger
      as determined by the party affected;

3.    There shall not be any action taken, or any law, regulation or order
      enacted, enforced or deemed applicable to the Western Sierra/Roseville
      merger, by any government entity which:

      -     makes the completion of the Western Sierra/Roseville merger illegal;

      -     requires the divestiture by Western Sierra of any material asset or
            of a material portion of the business of Western Sierra; or

      -     imposes any condition upon Western Sierra or its subsidiaries which
            in the judgment of Western Sierra would be materially burdensome;

   
4.    Western Sierra's Registration Statement shall have become effective under
      the Securities Act and no stop order suspending the effectiveness of the
      Registration Statement shall have been issued and shall remain in effect.
      No action or proceeding shall have been instituted to restrain or prohibit
      the transactions contemplated in the Western Sierra/Roseville agreement;

5.    Western Sierra and Roseville shall have received a determination from
      Perry-Smith & Co., LLP that the Western Sierra/Roseville merger will
      qualify for the pooling of interests accounting method;

6.    The representations and warranties of each of Western Sierra and Roseville
      set forth in the Western Sierra/Roseville agreement shall be true in all
      material respects as of the date of completion of the Western
      Sierra/Roseville merger; each of Western Sierra and Roseville 
    


                                       70
<PAGE>   80
   
      shall have duly performed and complied in all material respects with all
      agreements required by the Western Sierra/Roseville agreement, except
      where the failure to so perform and comply would not have or would not be
      reasonably likely to have a material adverse effect on Roseville,
      Roseville 1st National Bank, Western Sierra, Western Sierra National Bank
      or Western Sierra as the Surviving Corporation of the Western
      Sierra/Roseville merger; and none of the events or conditions entitling
      either party to terminate the Western Sierra/Roseville agreement shall
      have occurred and be continuing;

7.    Western Sierra and Roseville shall have received certificates of officers
      of the other party stating that the representations and warranties as set
      forth in the Western Sierra/Roseville agreement are true and correct, and
      opinions of counsel for the other party;

8.    No action, suit or proceeding shall have been instituted or threatened
      before any court or governmental body seeking to challenge or restrain the
      transactions contemplated by the Western Sierra/Roseville agreement which
      presents a substantial risk that the transactions will be restrained or
      that either Western Sierra or Roseville may suffer material damages;
    

9.    The holders of no more than 10% of the outstanding shares of Roseville
      common stock shall have exercised dissenters' rights. Dissenters of
      Western Sierra shall be included in the calculation;

10.   There shall not have been any change in the consolidated financial
      condition, aggregate consolidated net assets, shareholders' equity,
      business, or consolidated operating results of Western Sierra and its
      subsidiaries, taken as a whole, from December 31, 1997 to the date of
      completion of the Western Sierra/Roseville merger that results in a
      material adverse effect as to Western Sierra and its subsidiaries, taken
      as a whole;

11.   No event or circumstance shall have occurred which has had or could
      reasonably be expected to have a material adverse effect on Roseville or
      its subsidiaries; and

12.   Roseville shall have received a written opinion from a recognized company
      experienced in providing business valuations and fairness opinions,
      selected by Roseville confirming the fairness of the terms of the Western
      Sierra/Roseville merger to Roseville and its shareholders from a financial
      standpoint, and the opinion shall not have been withdrawn prior to the
      Roseville Meeting.

   
On August 26, 1998, Banc Stock Group delivered its opinion to Roseville's Board
of Directors that, as of the date of the opinion, the Roseville conversion rate
as set forth in the Western Sierra/Roseville agreement is fair, from a financial
point of view to the holders of Roseville common stock. In addition, on
September 17, 1998, the FRB approved the Western Sierra/Roseville merger subject
to approval of the shareholders of Western Sierra and Roseville.

WAIVER, AMENDMENT, AND TERMINATION

Any term or provision of the Western Sierra/Roseville agreement, other than
regulatory approval or any of the provisions required by law, may be waived in
writing at any time by the party which is, or whose shareholders are, entitled
to the benefits of the term or provision.
    


                                       71
<PAGE>   81
   
The Western Sierra/Roseville agreement provides that it may be terminated prior
to the completion of the Western Sierra/Roseville merger:

1.    By mutual consent of the Boards of Directors of Western Sierra and
      Roseville;

2.    By Western Sierra or Roseville upon the failure to satisfy any conditions
      specified in the Western Sierra/Roseville agreement if the failure is not
      caused by any action or inaction of the party requesting termination;
    

3.    By Western Sierra or Roseville if a Roseville Acquisition Event, as
      defined below, involving the other party shall have occurred;

4.    By either Western Sierra or Roseville if there shall have been a material
      breach of any of the representations or warranties of the other party,
      which breach, in the reasonable opinion of the terminating party, by its
      nature cannot be cured or is not cured prior to the Roseville Closing and
      which breach would, in the reasonable opinion of the terminating party,
      individually or in the aggregate, have, or be reasonably likely to have, a
      material adverse effect on the breaching party, or upon the completion of
      the Western Sierra/Roseville merger;

5.    By Western Sierra or Roseville after the occurrence of a default by the
      other party and the continuance of the default for a period of 20 business
      days after written notice of the default, if the default, in the
      reasonable opinion of the terminating party, cannot be cured prior to the
      Roseville Closing;

   
6.    By Western Sierra or Roseville if the updated schedules to the Western
      Sierra/Roseville agreement prepared and delivered by the other party
      disclose the occurrence of an event or the existence of any facts or
      circumstances, not previously disclosed, that has had or could reasonably
      be expected to have a material adverse effect on the other party, or on
      the completion of the Western Sierra/Roseville merger; or
    

7.    By Western Sierra or Roseville upon the failure of any of the conditions
      specified in the Western Sierra/Roseville agreement to have been satisfied
      prior to March 31, 1999.

   
A "Roseville Acquisition Event" is defined as a public announcement of an intent
to enter into a letter of intent or an agreement with any other entity (other
than Roseville or Western Sierra) to effect an acquisition or failure to
publicly oppose a tender offer for the acquisition of either Roseville's or
Western Sierra's shares or an exchange offer for the shares of either Roseville
or Western Sierra for shares of the offering entity.
    


                                       72
<PAGE>   82

LIQUIDATED DAMAGES

If a Roseville Acquisition Event occurs involving Roseville, then Roseville
shall pay to Western Sierra the sum of Five Hundred Thousand Dollars ($500,000)
in cash. If a Roseville Acquisition Event occurs involving Western Sierra, then
Western Sierra shall pay to Roseville the sum of Five Hundred Thousand Dollars
($500,000) in cash.

   
If the Western Sierra/Roseville agreement is terminated by Roseville as a result
of the revocation of the Roseville fairness opinion; or a termination of the
Western Sierra/Roseville agreement by Western Sierra because
    

   
- -     Roseville's shareholders do not approve the Western Sierra/Roseville
      agreement, or

- -     of a breach of Roseville's representations or warranties, a default by
      Roseville, or disclosure in the updated Schedule to the Western 
      Sierra/Roseville agreement of a material adverse event,
    

   
then, Roseville shall pay to Western Sierra the sum of Two Hundred Thousand
Dollars ($200,000), in cash. However, if a Roseville Acquisition Event occurs
involving Roseville within one hundred eighty (180) days following termination
by Western Sierra, Roseville shall pay to Western Sierra an additional Three
Hundred Thousand Dollars ($300,000) in cash.
    

   
If the Western Sierra/Roseville agreement is terminated by Roseville because

- -     Western Sierra's shareholders do not approve the Western Sierra/Roseville
      agreement, or

- -     of a breach of Western Sierra's representations and warranties, a default
      by Western Sierra, or disclosure in the updated schedules to the Western 
      Sierra/Roseville agreement of a material adverse event respecting Western 
      Sierra,
    

   
then, Western Sierra shall pay to Roseville the sum of Two Hundred Thousand
Dollars ($200,000), in cash. However, if a Roseville Acquisition Event occurs
involving Western Sierra within one hundred eighty (180) days following
termination by Roseville, Western Sierra shall pay to Roseville an additional
Three Hundred Thousand Dollars ($300,000) in cash.
    


                                       73
<PAGE>   83
OPINION OF ROSEVILLE'S FINANCIAL ADVISOR

   
Roseville retained Banc Stock Group as investment bankers to determine the
fairness, from a financial point of view, to the holders of shares of Roseville
common stock of the consideration to be received by Roseville, in the proposed
Western Sierra/Roseville merger. Pursuant to the Western Sierra/Roseville
agreement and subject to the terms and conditions contained therein, each holder
of shares of Roseville common stock will receive from Western Sierra, in
exchange for shares of Roseville common stock, shares of Western Sierra common
stock. The transaction is based on a book value to book value exchange of shares
based on the adjusted shareholders' equity of both Roseville and Western Sierra
subject to certain adjustments and terms, as described in the Western
Sierra/Roseville agreement.

Banc Stock Group has prepared for Roseville and for the Roseville Board of
Directors a fairness opinion and has received a fee of $14,000 for the fairness
opinion. Banc Stock Group has not previously provided investment banking and
financial advisory services to Roseville. Banc Stock Group has not provided
investment banking or financial advisory services to Western Sierra. Banc Stock
Group is not a market maker in shares of Roseville common stock. The Roseville
Board of Directors selected Banc Stock Group to prepare a fairness opinion on
the basis of Banc Stock Group's expertise and experience in the banking
industry. Banc Stock Group is an independent financial services firm,
specializing in the researching, buying, holding and selling stock of publicly
and privately traded community banks for its portfolio and portfolios of its
clients, and as part of its investment banking activities, is regularly engaged
in the valuation of banks and their securities in mergers and other types of
acquisitions, negotiated underwritings, stock navigation programs, and other
purposes.

No limitations were imposed by Roseville on Banc Stock Group in the
investigations made or procedures followed in rendering its opinion. Banc Stock
Group issued the Roseville fairness opinion that the Roseville conversion rate
is fair, from a financial point of view, to the holders of the shares of
Roseville common stock on August 26, 1998. The Roseville fairness opinion should
be read carefully and in its entirety.
    

In arriving at this opinion, Banc Stock Group has reviewed and analyzed, among
other things, the following:

   
- -     the Western Sierra/Roseville agreement;
    

- -     certain publicly available financial and other data of Roseville and
      Western Sierra including consolidated financial statements for the years
      1996 and 1997 and quarterly periods to March 31, 1998;

- -     certain other publicly available information concerning Roseville and
      Western Sierra;

- -     publicly available information concerning other banks and holding
      companies, the trading markets for their securities and the nature and
      terms of certain other merger transactions Banc Stock Group believed
      relevant to its inquiry; and

- -     evaluations and analyses prepared and presented to the Board of Directors
      of Roseville.


                                       74
<PAGE>   84
   
Banc Stock Group has held discussions with senior management of Roseville
concerning Roseville's past and current operations, financial condition and
prospects, as well as the results of regulatory examinations. Banc Stock Group
has reviewed with senior management of Roseville 1998 earnings projections for
Roseville as a stand-alone entity, assuming the Western Sierra/Roseville merger
does not occur, prepared by Roseville. Banc Stock Group has also reviewed with
the senior management of Roseville the projected operating cost savings of 10%
of Roseville's noninterest expense reasonably expected by Western Sierra to
result from the Western Sierra/Roseville merger. Certain pro forma financial
projections for the combined companies and for Roseville as a stand-alone entity
were derived by Banc Stock Group based upon the 1998 projections and projected
operating cost savings discussed above, as well as Banc Stock Group's own
assessment of general economic, market and financial conditions.

In conducting the review and in arriving at the Roseville fairness opinion, Banc
Stock Group relied upon and assumed the accuracy and completeness of the
financial and other information provided to Banc Stock Group or publicly
available. Banc Stock Group did not assume any responsibility for independent
verification of the same. Banc Stock Group relied upon the management of
Roseville and Western Sierra as to the reasonableness of the 1998 financial and
operating forecasts and projected operating cost savings (and the assumptions
and bases therefor) provided by them. Banc Stock Group assumed that the 1998
forecasts and projected operating cost savings reflected the best currently
available estimates and judgement of Roseville's management. Banc Stock Group
also assumed, without assuming any responsibility for the independent
verification of same, that the aggregate allowances for loan losses for
Roseville and Western Sierra were adequate to cover the losses. Banc Stock Group
did not make or obtain any evaluations or appraisals of the property of
Roseville or Western Sierra, nor did Banc Stock Group examine any individual
loan credit files. For purposes of the Roseville fairness opinion, Banc Stock
Group assumed that the Western Sierra/Roseville merger will have the tax,
accounting and legal effects (including, without limitation, that the Western
Sierra/Roseville merger will be accounted for as a pooling of interests)
described in the Western Sierra/Roseville agreement and assumed the accuracy of
the disclosures set forth in the Western Sierra/Roseville agreement. Banc Stock
Group's opinion as expressed in the Roseville fairness opinion is limited to the
fairness, from a financial point of view, to the holders of shares of Roseville
common stock of the Roseville conversion rate as described in the Western
Sierra/Roseville agreement and does not address Roseville's underlying business
decision to proceed with the Western Sierra/Roseville merger.
    

Banc Stock Group considered such financial and other factors as it deemed
appropriate under the circumstances, including among others the following:

- -     the historical and current financial positions and results of operations
      of Roseville and Western Sierra, including interest income, interest
      expense, net interest income, net interest margin, provision for loan
      losses, noninterest income, noninterest expense, earnings, dividends,
      internal capital generation, book value, intangible assets, return on
      assets, return on shareholders' equity, capitalization, the amount and
      type of nonperforming assets, loan losses and the reserve for loan losses,
      all as set forth in the financial statements for Roseville and for Western
      Sierra;


                                       75
<PAGE>   85
- -     the assets and liabilities for Roseville and Western Sierra, including the
      loan, investment and mortgage portfolios, deposits, other liabilities,
      historical and current liability sources and costs and liquidity; and

- -     the nature and terms of certain other merger transactions involving banks
      and bank holding companies.

   
Banc Stock Group has also taken into account its assessment of general economic,
market and financial conditions and its experience in other transactions, as
well as its experience in securities valuation and its knowledge of the banking
industry generally. Banc Stock Group's opinion is necessarily based only upon
conditions as they exist and can be evaluated on the date of the opinion and the
information made available to Banc Stock Group through the date of the opinion.

Set forth below is a brief summary of the Roseville fairness opinion report
dated July 2, 1998. For purposes of this report, Banc Stock Group found that
Roseville had approximately 384,805 outstanding shares of Roseville common stock
(fully diluted) as of the report date. Banc Stock Group performed in-depth
financial analysis and peer group comparison on the subject institution.
Analysis has been prepared utilizing both "quantitative and qualitative" factors
relating to overall performance benchmarking. Key indicators have been offered
based on accepted industry standards as well as regulatory indicators of
satisfactory bank performance.

Comparison Analysis. The valuation analyzed the contribution of Roseville and
Western Sierra to total assets, total loans, total deposits, total equity
capital, and net income of the pro forma combined institution as of March 31,
1998. This analysis was undertaken without regard to the effect of merger costs
or projected synergies realized by the proposed Western Sierra/Roseville merger.
    

This analysis showed that based on the pro forma financial statements of the
combined company as of March 31, 1998, Roseville would contribute approximately
30.6% of total assets, approximately 32% of total loans, approximately 30.6% of
total deposits, approximately 31.62% of total equity capital, and approximately
15.4% of net income.

Multiple of Book Value Method. This valuation approach is formulated on the
purchase prices and multiples of book values based on recent transactions for
institutions involved in mergers and acquisitions utilizing both a national and
regional index.

   
In Banc Stock Group's opinion, the multiple factor of 1.3 - 1.7 is
representative of the current values of sound and profitable banks referencing
similar operating platforms with a multiple of 1.5 specifically utilized in
determining the valuation multiple of book for Roseville. Utilizing the Multiple
of Book Value Method, (based on the March 31, 1998 call report) the acquisition
value, as of the Roseville fairness opinion report date is as follows:
    

           $3,948,000 (Roseville equity) X 1.5 (multiple) = $5,922,000



                                       76
<PAGE>   86
Multiple of Equity Return Method. This is the primary method of determining fair
market value and used extensively in valuation analysis. This valuation
preparation must take into account regional market transactions as well as
validating the forward earnings potential of Roseville to demonstrate an ability
to support an institution's current and future earnings capacity calculations.

Return multiples for the industry for profitable and financially sound
institutions is in the range of 14 to 20 times equity return. For the purpose of
this valuation a multiple of 17 times earnings will be utilized based on known
market conditions and an institution's performance. Based on the equity return
of Roseville utilizing most recent fiscal year-end with comparison to current
annualized estimated equity return calculates a value of $2,924,000.

          $172,000 Estimated Equity Return X 17(Multiple) = $2,924,000

   
Market Value Method. This method of determining the price of an institution's
per share market value is based on existing and previously documented stock
transactions. These transactions provide an indication of an institution's per
share value. In Banc Stock Group's opinion, despite the fact that there is not
an active trading market in shares of Roseville common stock, a market does
exist and is most likely limited by combined local community influences of low
liquidity, ownership levels, and/or low investor market interest and awareness.
Shares of Roseville common stock are currently trading at a discount of book
value. Based on the determined per share price of $8.00 (the reported
transaction price of the most recent trades), the fair market value of Roseville
is calculated accordingly:

            Per Share Value $8.00 X Total Outstanding Shares 319,972
                         = Fair Market Value $2,559,776

Consideration of Discounted Cash Flow Method

Banc Stock Group did not employ the discounted cash flow method in its analysis
of the Western Sierra/Roseville merger even though it is aware that the
discounted cash flow is a commonly used valuation methodology. Discounted cash
flow analysis is most appropriate for companies which show relatively steady or
somewhat predictable streams of cash flow. Given the uncertainty in estimating
both Western Sierra's and Roseville's future cash flows and a sustainable
long-term growth rate, Banc Stock Group considered a discounted cash flow
analysis inappropriate in its valuation. In addition, Banc Stock Group believes
that the provided methodologies proved adequate for determining the fairness of
the Roseville conversion rate.
    

Valuation Summary.

   
<TABLE>
<CAPTION>
                                          Total Value     Per Share*
                                          -----------     ----------
<S>                                       <C>             <C>
        Multiple of Book Value Method      $5,922,000       $18.51
     Multiple of Equity Return Method      $2,924,000       $ 9.14
                  Market Value Method      $2,559,776       $ 8.00
                              Average      $3,801,925       $11.88
</TABLE>
- ------------
* Based upon 319,972 shares outstanding.
    


                                       77
<PAGE>   87
The fair market value of Roseville, based on the averaging of total market value
methods of all of the shares would be $3,801,925. Realizing that the current
market value is trading at a 35% discount to book value, primarily due to stock
liquidity issues and performance issues, market value analysis for premium
calculation purposes must be carefully reviewed within the averaging formula. A
market value premium of $3,801,925 is being utilized to reflect the approximate
value of Roseville.

The individual cost associated on a per share basis would be $11.91 nondiluted
and $9.88 fully diluted.

   
In Banc Stock Group's opinion, based on the information compiled and analyzed
within the Roseville fairness opinion, the actual valuation on a per share
basis, taking into account financial condition and performance, blockage
factors, discount/premium, liquidity, and number of shares being valued, is
$9.88 per share fair market value for a control price premium on outstanding
shares of Roseville common stock fully diluted. A premium range of 1.3-1.7 times
book value can be utilized in determining a market value of Roseville. The
transaction offer as analyzed by Banc Stock Group of book to book based on
adjusted equity of Roseville as identified in the Western Sierra/Roseville
agreement is fair to the shareholders of Roseville. Roseville shareholders will
immediately realize the benefit of a more liquid stock and resultant value.
Although the transaction is identified as book to book, the price per share
after the transaction will reflect the then current market value of shares of
Western Sierra common stock. Shares of Western Sierra common stock are currently
trading at 2.1 times book. Shares of Roseville common stock are currently
trading at a discount of book value as described within the Roseville fairness
opinion. Roseville's value is further realized in being acquired within a
holding company framework as described within the Roseville fairness opinion and
Roseville 1st National Bank being operated as a wholly-owned subsidiary. The
franchise value of Roseville is on its loyal customers and operating "footprint"
which can realize continued revenue generation thereby providing shareholders a
higher multiple return. The combined number of shareholders of both Roseville
and Western Sierra will provide additional liquidity to Western Sierra common
stock providing a platform of additional growth with the added prospect of other
transactions to be seen as most likely by investors.

In performing its analyses, Banc Stock Group made numerous assumptions about
industry performance, general business and economic conditions and other
matters, many of which are beyond the control of Roseville or Western Sierra.
The analyses performed are not necessarily indicative of actual values or actual
future results, which may be significantly more or less favorable than suggested
by those analyses. The analyses were prepared solely as part of Banc Stock
Group's analysis as to the fairness of the consideration to the holders of
shares of Roseville common stock in the Western Sierra/Roseville merger. The
analyses do not purport to be appraisals or to reflect the prices at which
Roseville might actually be sold or the prices at which any securities may trade
at the present time or in the future.
    

   
A representative of Banc Stock Group provided the Roseville fairness opinion to
the Board of Directors of Roseville and provided a verbal summary of the
Roseville fairness opinion. Banc Stock Group provided the Roseville fairness
opinion dated August 26, 1998 regarding the fairness, from a financial point of
view, of the consideration to be received by Roseville in the proposed Western
Sierra/Roseville merger, based on the information then available.
    


                                       78
<PAGE>   88
   
Based upon and subject to the foregoing, it is Banc Stock Group's opinion that,
as of the date of the opinion, the Roseville conversion rate as set forth in the
Western Sierra/Roseville Agreement is fair, from a financial point of view, to
the holders of the shares of Roseville common stock.

UPDATED OPINION. On December 24, 1998, Western Sierra and Roseville entered into
the First Amendment to Agreement and Plan of Reorganization and Merger fixing
the Roseville conversion rate at 1.2110. Banc Stock Group reviewed the fixed
Roseville conversion rate of 1.2110 in comparison to its written opinion dated
August 26, 1998. Based upon the market value of Western Sierra common stock and
the number of shares of Roseville common stock outstanding as of February 9,
1999, which were $16.75 and 370,805, respectively, and the Roseville conversion
rate of 1.2110, the value of each share of Roseville common stock in the Western
Sierra/Roseville merger is $20.28. This value compares to the values obtained
using the methodologies employed by Banc Stock Group as follows:
    

   
<TABLE>
<CAPTION>
                                         Total Value           Per Share Value
                                         -----------           ---------------
<S>                                      <C>                   <C>
Actual Conversion Rate                   $7,519,925                $20.28
(as of February 9, 1999)

Multiple of Book Value Method            $5,922,000                $15.97
Multiple of Equity Return Method         $2,924,000                $ 7.88
Market Value Method                      $2,559,776                $ 8.00(1)
</TABLE>

- ----------------
(1) Based on 319,972 shares outstanding as of July 2, 1998.
    

   
Banc Stock Group delivered a written opinion dated as of December 24, 1998 that
as of the date of the opinion the Roseville conversion rate is fair, from a
financial point of view, to the holders of Roseville common stock. Banc Stock
Group did not charge Roseville for the written updated opinion. The full text of
Banc Stock Group's December 24, 1998 written opinion to Roseville's Board of
Directors, which sets forth the assumptions made, matters considered, and
limitations of the review of Banc Stock Group, is attached to this joint proxy
statement/prospectus as Exhibit V and is incorporated herein by reference and
should be read carefully and in its entirety.

FEDERAL AND CALIFORNIA INCOME TAX CONSEQUENCES

The following is a description of all material federal and California income tax
consequences of the Western Sierra/Roseville merger. This following is not a
complete description of all tax consequences of the Western Sierra/Roseville
merger. Each shareholder's individual circumstances may affect the tax
consequences of the Western Sierra/Roseville merger to him or her. In addition,
the following description does not address the tax consequences of the Western
Sierra/Roseville merger under applicable state or local laws, other than
California law. CONSEQUENTLY, EACH ROSEVILLE SHAREHOLDER IS ADVISED TO CONSULT
HIS OR HER OWN TAX ADVISOR AS TO THE SPECIFIC TAX CONSEQUENCES OF THE WESTERN
SIERRA/ROSEVILLE MERGER TO THEM.

An opinion of Perry-Smith & Co., LLP, independent accountants for Western
Sierra and Roseville, has been delivered to Western Sierra which states that for
federal and related California income tax purposes, under current law, assuming
that the Western Sierra/Roseville merger and related transactions will take
place as described in the Western Sierra/Roseville agreement, the Western
Sierra/Roseville merger will constitute a reorganization under Section 368 of
the Code. Assuming the opinion is not withdrawn or changed due to changes in
laws, or otherwise, prior to the date of the Western Sierra/Roseville merger,
material federal and related California income tax consequences of the Western
Sierra/Roseville merger, in the opinion of Perry-Smith & Co., LLP, will be as
follows:
    

- -     No gain or loss will be recognized by Roseville or Western Sierra in the
      Western Sierra/Roseville merger;


                                       79
<PAGE>   89
- -     The basis and holding periods of the assets of Roseville will carry over
      to Western Sierra;

- -     No gain or loss will be recognized by the holders of Roseville common
      stock upon their receipt of Western Sierra common stock upon conversion of
      their Roseville common stock;

- -     The receipt of cash in lieu of fractional share interests of Western
      Sierra common stock by holders of Roseville common stock will result in
      gain or loss equal to the difference between the payment and the tax basis
      allocated to their fractional share interests. Whether the gain or loss
      will constitute capital gain or loss for a particular shareholder will
      depend upon whether that shareholder's Roseville common stock is held as a
      capital asset at the date of the Western Sierra/Roseville merger;

   
- -     The receipt of cash upon exercise of dissenters' rights by holders of
      Western Sierra common stock or Roseville common stock will result in gain
      or loss equal to the difference between the payment and the tax basis of
      their shares. Whether the gain or loss shall constitute 
      capital gain or loss for a particular shareholder will depend upon: 1)
      whether that shareholder's Western Sierra common stock or Roseville common
      stock is held as a capital asset at the date of the Western
      Sierra/Roseville merger, and 2) whether the requirements of Section 302(b)
      of the Code are met in the shareholder's exchange;

- -     The tax basis of Western Sierra common stock received by the holders of
      Roseville common stock will be the same as the tax basis of the Roseville
      common stock converted in the Western Sierra/Roseville merger; and

- -     The holding period of Western Sierra common stock in the hands of the
      shareholders of Roseville will include the period during which the
      Roseville common stock converted in the Western Sierra/Roseville merger
      was held, provided the Roseville common stock was held as a capital asset
      on the date of the Western Sierra/Roseville merger.

In developing its opinion, Perry-Smith & Co., LLP relied upon facts and
representations provided to it by Western Sierra's management and Roseville's
management and made no independent determination of the facts and
representations. The representations that Western Sierra's management and
Roseville's management made were factual in nature. In addition, Perry-Smith &
Co., LLP's opinion was based upon the analysis of the current Code, the
California and Revenue Taxation Code, the Regulations thereunder, current case
law, and published rulings. The foregoing are subject to change, and any change
may be retroactively effective. If so, Perry-Smith & Co., LLP's opinion may be
affected and may not be relied upon. Perry-Smith & Co., LLP assumes no
responsibility to update its opinion after the date of the Western
Sierra/Roseville merger because of such change. Further any variation or
differences in the facts or representations, for any reason, may affect
Perry-Smith & Co., LLP's opinion, perhaps in an adverse manner, and make it
inapplicable.
    

RIGHTS OF DISSENTING SHAREHOLDERS OF ROSEVILLE AND WESTERN SIERRA

Shareholders of Roseville and Western Sierra who do not vote in favor of the
Western Sierra/Roseville merger either by voting against the Western
Sierra/Roseville merger or by abstaining from voting are entitled to certain
rights under Chapter 13 of the California General Corporation Law ("Chapter
13"). Chapter 13 is reprinted in Exhibit VI to this joint proxy


                                       80
<PAGE>   90
statement/prospectus. Please note that all references in Chapter 13 and in this
section to a "shareholder" are to the record holder of dissenting shares. A
person having a beneficial interest in shares of Western Sierra common stock or
Roseville common stock held of record in the name of another person, like a
broker or nominee, and wishing to exercise his or her dissenter's rights should
act promptly to cause the shareholder of record to follow the steps summarized
below properly and in a timely manner to perfect his or her dissenter's rights.

The following discussion is not a complete statement of the law relating to
dissenters' rights and is qualified in its entirety by Exhibit VI which is
incorporated herein by reference. This discussion and Exhibit VI should be
reviewed carefully by any shareholders who wish to exercise dissenters' rights
or who wish to preserve the right to do so since failure to comply with the
procedures set forth in Chapter 13 will result in the loss of dissenters'
rights.

   
If the Western Sierra/Roseville merger is completed, those shareholders of
Western Sierra or Roseville who elect to exercise their dissenters' rights and
who properly and timely perfect those rights will be entitled to receive the
"fair market value", in cash, of their shares. Pursuant to Section 1300(a) of
the California General Corporation Law, the "fair market value" would be
determined as of June 11, 1998, the day before the first announcement of the
terms of the Western Sierra/Roseville merger, excluding any appreciation caused
by the Western Sierra/Roseville merger. See "Market Prices."

If the Western Sierra/Roseville agreement is approved at the Western Sierra
Meeting and the Roseville Meeting, Western Sierra and Roseville will within 10
days of the approval mail a notice to the holders of record of shares of Western
Sierra common stock and Roseville common stock which were not voted in favor of
the Western Sierra/Roseville agreement stating that the required shareholder
approval of the Western Sierra/Roseville merger was obtained (the "Roseville
Notice of Approval"). The Roseville Notice of Approval will set forth the price
determined by Western Sierra or Roseville, as applicable, to represent the "fair
market value" of any dissenting shares, and will set forth the procedures (which
are also described below) to be followed by dissenting shareholders who wish to
pursue further their statutory rights. The procedures include a timely written
demand that must be made on Western Sierra or Roseville, as applicable, in order
to perfect the right to dissent. The Roseville Notice of Approval will include a
copy of Sections 1300 through 1304 of the California General Corporation Law.

Under Section 1301(a) of the California General Corporation Law, the statement
in the Roseville Notice of Approval of the determination of the fair market
value of Western Sierra common stock or Roseville common stock, as applicable,
will constitute an offer by Western Sierra or Roseville, as applicable, to
purchase from its shareholders any dissenting shares at the price stated,
assuming the Western Sierra/Roseville merger is completed. However, the
determination by Western Sierra or Roseville, as applicable, of fair market
value is not binding on its shareholders, and if a dissenting shareholder
chooses not to accept that offer, he or she has the right during a period of six
months following the mailing of the Roseville Notice of Approval to commence a
lawsuit to have the fair market value, as described in Section 1300(a),
determined by a court. The fair market value as determined by the court in those
circumstances could be higher or lower than the amount offered by Western Sierra
or Roseville, as applicable, in the Roseville Notice of Approval and any such
determination would be binding on both the dissenting shareholder or
shareholders involved in the lawsuit and Western Sierra or Roseville, as
applicable.
    


                                       81
<PAGE>   91
Any holder of record of Western Sierra Common Stock or Roseville Common Stock,
as applicable, who wishes to exercise dissenters' rights (or to preserve the
right to do so) must make a written demand upon Western Sierra or Roseville, as
applicable, that Western Sierra or Roseville, as applicable, pay the shareholder
in cash the fair market value of his or her dissenting shares (as defined
above).

   
The demand by holders of Western Sierra common stock should be sent to Western
Sierra Bancorp, 4011 Plaza Goldorado Circle, Cameron Park, California 95682,
Attention: President. The written demand must state the number of shares held of
record by the shareholder and the number of shares which the shareholder demands
that Western Sierra purchase for cash and must also contain a statement of the
amount which the shareholder claims to be the fair market value of the
dissenting shares, as of the day before the announcement of the proposed Western
Sierra/Roseville merger. That statement will constitute an offer by the
shareholder to sell his or her dissenting shares to Western Sierra at that
price. The certificates for shares of Western Sierra common stock must also be
included with the written demand.

The demand by holders of Roseville common stock should be sent to Roseville 1st
Community Bancorp, 1801 Douglas Boulevard, Roseville, California 95661,
Attention: President. The written demand must state the number of shares held of
record by the shareholder and the number of shares which the shareholder demands
that Roseville purchase for cash and must also contain a statement of the amount
which the shareholder claims to be the fair market value of the dissenting
shares, as of the day before the announcement of the proposed Western
Sierra/Roseville merger. That statement will constitute an offer by the
shareholder to sell his or her dissenting shares to Roseville at that price. The
certificates for shares of Roseville common stock must also be included with the
written demand.

A proxy card directing a vote against the Western Sierra/Roseville merger is not
sufficient to meet the requirements for a written demand. The written demand and
the dissenting shareholder's share certificate(s) must be received by Western
Sierra or Roseville, as applicable, within thirty (30) days after the date on
which the Roseville Notice of Approval was mailed to the shareholder. The
certificate(s) will be stamped or endorsed with a statement that the shares are
dissenting shares and returned to the dissenting shareholder.

In addition, such shareholders may not have voted in favor of approval of the
Western Sierra/Roseville agreement, either in person or by proxy. A shareholder
may vote in favor of approval of the Western Sierra/Roseville agreement as to
part of his or her shares without jeopardizing the dissenting status of those
shares not voted in favor of approval of the Western Sierra/Roseville agreement.
However, a shareholder should clearly specify the number of shares not voted in
favor of approval of the Western Sierra/Roseville agreement.
    

   
If the shareholder votes in favor of approval of the Western Sierra/Roseville
agreement (either in person or by proxy) or if Western Sierra or Roseville, as
applicable, does not receive his or her written demand within thirty (30) days
after the Roseville Notice of Approval was mailed to the shareholder (or if the
shareholder otherwise fails to comply in a timely manner with the procedures of
Chapter 13 as described herein or contained in Exhibit VI), the shareholder
shall be bound by the terms of the Western Sierra/Roseville agreement and shall
lose the right to receive the fair market value of his or her shares in cash.
    


                                       82
<PAGE>   92
Dissenting shares may lose their status as such if any of the following occurs:
the Western Sierra/Roseville merger is abandoned; the shares are transferred
before being submitted to Western Sierra or Roseville, as applicable, for
endorsement; the shareholder withdraws his or her demand with the consent of
Western Sierra or Roseville, as applicable, in the absence of an agreement
between the shareholder and Western Sierra or Roseville, as applicable, as to
the price of his or her shares; or the shareholder fails to file suit against
Western Sierra or Roseville, as applicable, or otherwise fails to become a party
to the suit within six months following the mailing of the Roseville Notice of
Approval.

   
Western Sierra or Roseville, as applicable, will pay the fair market value of
dissenting shares at the later of 30 days following an agreement as to the
amount to be paid or within 30 days after all statutory and contractual
conditions to the Western Sierra/Roseville merger are satisfied; provided that
in the event that the payment cannot be made due to the provisions set forth in
California General Corporation Law, Section 500 et seq. dealing with
restrictions on a corporation's ability to distribute funds or assets to a
shareholder, then those shareholders holding dissenting shares shall become
creditors of Western Sierra or Roseville, as applicable, and their claims will
be payable as soon as permissible under the provisions.

The foregoing summarizes certain provisions of Chapter 13 of the California
General Corporation Law, but shareholders of Western Sierra or Roseville, as
applicable, considering the exercise of their rights under those sections should
read in full Chapter 13, which is reproduced in Exhibit VI and should consult
their own legal advisors. The receipt of cash payment for dissenting shares will
result in recognition of gain or loss for federal income tax purposes by those
dissenting shareholders. See "Description of the Western Sierra/Roseville
Merger--Federal and California Income Tax Consequences," above.
    


                                       83
<PAGE>   93
   
                     Description of the Capital Stock of the
                  Western Sierra, Lake Community and Roseville

WESTERN SIERRA

The authorized capital stock of Western Sierra consists of 10,000,000 shares of
Western Sierra common stock, no par value per share and 10,000,000 shares of
Western Sierra preferred stock, of which 981,448 shares of Western Sierra common
stock and no shares of Western Sierra preferred stock were outstanding as of
February 1, 1999. In addition, 115,543 shares of Western Sierra common stock
were reserved for issuance pursuant to stock option and other employee stock
plans. Each share has the same rights, privileges and preferences as every other
share and would share equally in Western Sierra's net assets upon liquidation or
dissolution. The shares of Western Sierra common stock have no preemptive or
other subscription rights, and there are no conversion rights or redemption or
sinking fund provisions. Each share is entitled to one vote, except that in the
election of directors, Western Sierra shareholders may vote their shares
cumulatively. All of the outstanding shares of Western Sierra common stock are
fully paid and nonassessable and each participates equally in dividends, which
are payable when and as declared by Western Sierra's Board of Directors out of
funds legally available therefor.
    

   
Western Sierra's Articles of Incorporation (the "Western Sierra Articles") also
incorporate provisions which may have the effect of delaying, deferring or
preventing a change in control of Western Sierra in certain circumstances. These
provisions will be controlling upon completion of the Western Sierra/Lake
Community merger and/or the Western Sierra/Roseville merger and after the
mergers shareholders of Lake Community and/or Roseville will be subject to these
provisions. Specifically, Western Sierra Articles provide that the shareholder
vote required to approve a "Business Combination" (as defined) shall be at least
66-2/3% of Western Sierra's outstanding shares of voting stock voting together
as a single class. A "Business Combination" is defined as any
    

- -     merger or consolidation of Western Sierra or a subsidiary of Western
      Sierra where the shareholders of Western Sierra immediately prior to the
      merger or consolidation will own immediately after the merger or
      consolidation (A) no equity securities of the surviving entity after the
      merger or consolidation or (B) equity securities (excluding options,
      warrants and rights) of the surviving entity after the merger or
      consolidation with less than 50% of the voting power of the surviving
      entity after the merger or consolidation or

- -     any sale, exchange, transfer or other disposition of 50% or more of the
      assets of Western Sierra or combined assets of Western Sierra and its
      subsidiaries.

The amendment or repeal of this provision of Western Sierra's Articles requires
the affirmative vote of the holders of 66 2/3% or more of the outstanding
shares.



                                       84
<PAGE>   94

LAKE COMMUNITY

   
The authorized capital stock of Lake Community consists of 20,000,000 shares of
Lake Community common stock, no par value per share and 10,000,000 shares of
Lake Community preferred stock, of which 1,298,296 shares of Lake Community
common stock and no shares of Lake Community preferred stock were outstanding as
of February 1, 1999. In addition, 147,850 shares of Lake Community common stock
were reserved for issuance pursuant to outstanding stock options under the Lake
Community 1984 Stock Option Plan. Holders of shares of Lake Community common
stock are entitled to cast one vote for each share held of record on all matters
to be voted on, except that holders are entitled to cumulate their votes in the
election of directors upon compliance with certain conditions. The holders of
Lake Community common stock are entitled to receive dividends, if any, as may be
declared from time to time by Lake Community's Board of Directors in its
discretion from funds legally available therefor. Upon liquidation or
dissolution of Lake Community, the holders of Lake Community common stock are
entitled to receive pro rata all assets remaining available for distribution to
shareholders. The Lake Community common stock has no preemptive or other
subscription rights, and there are no conversion rights or redemption or sinking
fund provisions. All the outstanding shares of Lake Community common stock are
fully paid and nonassessable.
    

Lake Community's Articles of Incorporation (the "Lake Community Articles") also
incorporate provisions which are described below, which may have the effect of
delaying, deferring or preventing a change in control of Lake Community in some
circumstances. These provisions would effectively become inoperative upon
completion of the Western Sierra/Lake Community merger. The following discussion
is qualified in its entirety by the specific provisions of the Lake Community
Articles.

CONSIDERATION OF FACTORS OTHER THAN PRICE. The Lake Community Articles provide
that, when evaluating any proposed tender or exchange offer for Lake Community's
voting stock or any proposed transaction with any other person which would
constitute a "Business Combination," the Board of Directors of Lake Community
may consider the best interests of Lake Community as a whole, including without
limitation: giving due consideration to the interests of Lake Community's
shareholders; whether the proposed transaction might violate applicable laws;
not only the consideration being offered in the proposed transaction in relation
to the then current market price for Lake Community's stock, but also the market
price for the stock over a period of years, the estimated price which might be
achieved in a negotiated sale of Lake Community as a whole or in part or through
liquidation, the premiums over market price for the securities of other
corporations in similar transactions, current political, economic and other
factors bearing on securities prices and Lake Community's financial condition
and future prospects; and the social, economic and legal effects on the
employees, customers, suppliers and other constituents of Lake Community and on
the communities in which Lake Community conducts its business.

SHAREHOLDER ACTION BY WRITTEN CONSENT. Under California law, generally, any
action which may be taken at any annual or special meeting of shareholders of a
corporation may be taken without a meeting and without prior notice, if a
consent in writing, setting forth the action so taken, shall be signed by the
holders of outstanding shares of the corporation having not less than the
minimum number of votes that would be necessary to authorize or take that action
at a meeting at which all shares entitled to vote thereon were present and
voted. The Lake


                                       85
<PAGE>   95

Community Articles provide that as a condition to shareholder action by written
consent, the Board of Directors of Lake Community, by resolution, shall have
previously approved any such action.

   
ANTI-GREENMAIL PROVISION. The Lake Community Articles also provide that any
direct or indirect repurchase by Lake Community of outstanding shares of voting
stock of Lake Community ("Voting Stock") from any person (or group of affiliated
persons) known to Lake Community to be a beneficial owner of five percent or
more of the Voting Stock (an "Interested Shareholder"), who has acquired
beneficial ownership of any Voting Stock within a period of less than two years
immediately prior to the date of the proposed repurchase (or the date of an
agreement to repurchase) at a per share price in excess of the Fair Market Value
(as defined) at the time of the repurchase by Lake Community shall require the
approval of a majority of the shares of Voting Stock, excluding Voting Stock
beneficially owned by the Interested Shareholder, except for

- -     a tender or exchange offer by Lake Community for a class of Capital Stock
      (as defined) made available on the same terms to all holders of the class
      of Capital Stock,
    

   
- -     purchases made in an open market purchase program approved by a majority 
      of Continuing Directors (as defined) provided that the purchases are 
      effected on the open market and are not the result of a privately
      negotiated transaction.
    

Additionally, any amendment or repeal of this provision, or the adoption of
provisions inconsistent with this provision, must be approved by the affirmative
vote of a majority of the shares of Voting Stock, excluding Voting Stock
beneficially owned by any Interested Shareholder, voting together as a single
class.

ROSEVILLE

The authorized capital stock of Roseville consists of 5,000,000 shares of
Roseville common stock, no par value per share, of which 370,805 shares of
Roseville common stock were outstanding as of February 1, 1999. In addition,
26,000 shares of Roseville common stock were reserved for issuance pursuant to
outstanding stock options under the Roseville 1993 Stock Option Plan. Each share
has the same rights, privileges and preferences as every other share and would
share equally in Roseville's net assets upon liquidation or dissolution. The
shares of Roseville common stock have no preemptive or other subscription
rights, and there are no conversion rights or redemption or sinking fund
provisions. Each share is entitled to one vote, except that in the election of
directors, Roseville shareholders may vote their shares cumulatively. All of the
outstanding shares of Roseville common stock are fully paid and nonassessable
and each participates equally in dividends, which are payable when and as
declared by Roseville's Board of Directors out of funds legally available
therefor.


                                       86
<PAGE>   96
WESTERN SIERRA FOLLOWING THE WESTERN SIERRA/LAKE COMMUNITY MERGER AND THE
WESTERN SIERRA/ROSEVILLE MERGER

The Articles of Incorporation and Bylaws of Western Sierra will continue as the
Articles of Incorporation and Bylaws of Western Sierra following the Western
Sierra/Lake Community merger and the Western Sierra/Roseville merger. The
authorized capital stock of Western Sierra following the Western Sierra/Lake
Community merger and the Western Sierra/Roseville merger will consist of
10,000,000 shares of Western Sierra common stock and 10,000,000 shares of
Western Sierra preferred stock. The rights, preferences and privileges of
Western Sierra common stock following the Western Sierra/Lake Community merger
and the Western Sierra/Roseville merger will be the same as those described
above for Western Sierra common stock.


                                       87
<PAGE>   97
   
                                  Market Prices
    

WESTERN SIERRA

   
Western Sierra common stock is not listed on any stock exchange, nor is it
listed with NASDAQ. Western Sierra is considering listing its shares with NASDAQ
following the mergers. Western Sierra common stock does not have an active
trading market, and there is no established public market for Western Sierra
common stock. Management of Western Sierra is aware that the San Francisco
office of Hoefer & Arnett, Incorporated, Sutro & Co., Dean Witter, Paine Webber,
Prudential, Resource Trust, 1st National Bank, Solomon Booth, Northern Trust,
Philadep, South West, Midwest & Co., Schwab, Edward D. Jones, Donaldson, Old
Discount Brokerage and CEDE handle trades in Western Sierra common stock (the
"Western Sierra Securities Dealers").
    

The following table shows the high and low bid quotations for Western Sierra
common stock, as reported by Western Sierra Securities Dealers during the first
nine months of 1998 and the calendar quarters for the years 1997 and 1996. These
quotations reflect the price that would be received by the seller, without
retail mark-up, mark-down or commissions and may not have represented actual
transactions:

<TABLE>
<CAPTION>
                                                    Bid Prices            Volumes
                                              ---------------------       -------
    Quarter                                     High          Low
- ----------------                              -------       -------
<S>                                           <C>           <C>           <C>
4th Quarter 1998                              $19.00        $16.00        20,500
3rd Quarter 1998                              $20.25        $15.00        35,707
2nd Quarter 1998                              $21.00        $18.50        72,806
1st Quarter 1998                              $19.50        $17.25        46,976

4th Quarter 1997                              $18.375       $14.25        15,074
3rd Quarter 1997                              $14.50        $12.50        31,285
2nd Quarter 1997                              $12.75        $12.75        40,250
1st Quarter 1997                              $12.875       $12.875          500

4th Quarter 1996                              $11.50        $11.25        30,600
3rd Quarter 1996                              $10.00        $ 9.75        20,965
2nd Quarter 1996                              $11.125       $10.625       19,840
1st Quarter 1996                              $11.00        $10.25        15,595
</TABLE>

   
The last sales price of Western Sierra common stock on or before May 27, 1998,
the day prior to the date of the first public announcement of the proposed
Western Sierra/Lake Community merger, was $20.25, which reflects a sale that
occurred on May 15, 1998. The last sales price of Western Sierra common stock on
or before June 11, 1998, the day prior to the date of the first public
announcement of the proposed Western Sierra/Roseville merger, was $21.00, which
reflects a sale that occurred on June 8, 1998. The last sales price of Western
Sierra common stock on or before February 9, 1999, the last practicable date
before printing of this joint proxy statement/prospectus, was $16.75, which
reflects a sale that occurred on February 4, 1999. The "bid" and "asked" prices
of Western Sierra common stock on February 9, 1999 were $16.00 and $16.75,
respectively.
    


                                       88
<PAGE>   98

   
As of February 1, 1999, the shares of Western Sierra common stock were held by
approximately 325 record holders.

LAKE COMMUNITY

Trading in Lake Community common stock has not been extensive and the trades
cannot be characterized as amounting to an active trading market. Lake Community
common stock is not listed on any exchange, nor is it listed with NASDAQ.
Management of Lake Community is aware that various brokers facilitate trades in
Lake Community common stock. The following table summarizes those trades in the
market of which Lake Community's management has knowledge setting forth the
approximate high and low sale prices for the periods indicated. These quotations
reflect the price that would be received by the seller, without retail mark-up,
mark-down or commissions :
    

<TABLE>
<CAPTION>
                                               Bid Prices                Volumes
                                         -----------------------         -------
    Quarter                               High              Low
- ----------------                         -------          -------
<S>                                      <C>              <C>            <C>
4th Quarter 1998                         $11.125          $10.25               0
3rd Quarter 1998                         $11.125          $10.25           4,550
2nd Quarter 1998                         $10.50           $ 7.50          50,033
1st Quarter 1998                         $ 7.75           $ 7.00          90,490

4th Quarter 1997                         $ 7.00           $ 7.00             N/A
3rd Quarter 1997                         $ 7.00           $ 7.00             N/A
2nd Quarter 1997                         $ 7.00           $ 7.00             N/A
1st Quarter 1997                         $ 7.00           $ 7.00             N/A

4th Quarter 1996                         $ 7.50           $ 6.00             100
3rd Quarter 1996                         $ 7.50           $ 6.00             600
2nd Quarter 1996                         $ 7.50           $ 6.00          29,000
1st Quarter 1996                         $ 7.50           $ 6.00           1,000
</TABLE>

   
The last sales price of Lake Community common stock on or before May 27, 1998,
the day prior to the date of the first public announcement of the proposed
Western Sierra/Lake Community merger, was $7.75, which reflects a sale that
occurred on May 19, 1998. The last sales price of Lake Community common stock on
or before February 9, 1999, the last practicable date before printing of this
joint proxy statement/prospectus, was $10.75, which reflects a sale that
occurred on September 21, 1998. The "bid" and "asked" prices of the Lake
Community common stock on February 9, 1999 were $10.50 and $11.50, respectively.
As of February 1, 1999, the shares of Lake Community common stock were held by
approximately 807 record holders.
    


                                       89
<PAGE>   99
ROSEVILLE

   
Trading in Roseville common stock has been very limited and there is no
established public trading market. Roseville common stock is not listed on any
exchange, nor is it included in NASDAQ. There have been no trades in Roseville
common stock during 1998 and there was only one trade in 1997 for 241 shares of
Roseville common stock at a price of $8.00 per share. The last sales price of
Roseville common stock on or before June 11, 1998, the day prior to the date of
the first public announcement of the proposed Western Sierra/Roseville merger,
was $8.00, which reflects a sale that occurred on June 3, 1997. The last sales
price of Roseville common stock on or before February 9, 1999, the last
practicable date before printing of this joint proxy statement/prospectus, was
$8.00, which reflects a sale that occurred on June 3, 1997. As of February 1,
1999, the shares of Roseville common stock were held by approximately 305 record
holders.
    


                                       90
<PAGE>   100
   
                                    Dividends
    

WESTERN SIERRA

Western Sierra shareholders are entitled to receive dividends when and as
declared by its board of directors, out of funds legally available therefor, as
provided in the California General Corporation Law. The California General
Corporation Law provides that a corporation may make a distribution to its
shareholders if its retained earnings immediately prior to the dividend payout
at least equal the amount of the proposed distribution. In the event that
sufficient retained earnings are not available for the proposed distribution, a
corporation may, nevertheless, make a distribution if it meets both the
"quantitative solvency" and the "liquidity" tests, as set forth in the
California General Corporation Law. In general, the quantitative solvency test
requires that the sum of the assets of the corporation equal at least 1-1/4
times its liabilities. The liquidity test generally requires that a corporation
have current assets at least equal to current liabilities, or, if the average of
the earnings of the corporation before taxes on income and before interest
expense for the two preceding fiscal years was less than the average of the
interest expense of the corporation for those fiscal years, then current assets
must equal at least 1-1/4 times current liabilities.

Western Sierra paid stock dividends of 7% per share on April 17, 1995, 4% per
share on October 20, 1995, 6% per share on April 30, 1997 and 10% per share on
October 20, 1997.

   
The amount and payment of dividends by Western Sierra are set by Western
Sierra's Board of Directors with numerous factors involved including Western
Sierra's earnings, financial condition and the need for capital for expanded
growth and general economic conditions. While it is anticipated that Western
Sierra will continue to declare stock dividends based upon the recommendations
of the Board of Directors of Western Sierra, there can be no assurance that such
dividends will occur. Under both the Western Sierra/Lake Community agreement and
the Western Sierra/Roseville agreement, Western Sierra has agreed that it will
not declare or pay any dividend on its shares of Western Sierra common stock,
other than regular cash dividends consistent with past practices. This
restriction would no longer be applicable in the event the Western Sierra/Lake
Community merger and the Western Sierra/Roseville merger are not approved by the
shareholders, and will not restrict Western Sierra's ability to pay dividends
following the Western Sierra/Lake Community merger and/or the Western
Sierra/Roseville merger.
    

LAKE COMMUNITY

   
The shareholders of Lake Community are entitled to cash dividends when and as
declared by Lake Community's Board of Directors out of funds legally available
therefor, subject to the restrictions set forth in the California Financial
Code. The California Financial Code provides that a bank may not make a cash
distribution to its shareholders in an amount which exceeds the lesser of (1)
the retained earnings or (2) the net income of the bank for its last three
fiscal years, less the amount of any distributions made by the bank to its
shareholders during that period; however, a bank may, with the approval of the
DFI, make a distribution to its shareholders in an amount not exceeding the
greatest of

- -     the retained earnings of the bank,
    


                                       91
<PAGE>   101

- -     the net income of the bank for its last fiscal year, or

- -     the net income of the bank for its current fiscal year.

If the DFI finds that the shareholders' equity of a bank is not adequate or that
the payment of a dividend would be unsafe or unsound for the bank, the DFI may
order the bank not to pay any dividend to the shareholders.

   
Lake Community has paid cash dividends on its shares of Lake Community common
stock. On December 18, 1997, the Board of Directors of Lake Community declared a
cash dividend of $0.27 per share payable February 17, 1998 to shareholders of
record as of January 16, 1998. On November 21, 1996, the Board of Directors of
Lake Community declared a cash dividend of $0.20 per share payable February 14,
1997 to shareholders of record as of January 15, 1997, and on November 30, 1995,
the Board of Directors of Lake Community declared a cash dividend of $0.20 per
share payable February 2, 1996 to shareholders of record as of January 1, 1996.
The amount and payment of dividends by Lake Community are set by Lake
Community's Board of Directors with numerous factors involved including Lake
Community's earnings, financial condition, and the need for capital for expanded
growth and general economic conditions. No assurance can be given that cash or
stock dividends will be paid in the future. Under the Western Sierra/Lake
Community agreement, Lake Community has agreed that it will not declare or pay
any dividend on its shares of Lake Community common stock, other than regular
cash dividends consistent with past practices. This restriction would no longer
be applicable in the event the Western Sierra/Lake Community merger is not
approved by the shareholders.
    

ROSEVILLE

   
Roseville has never paid any cash or stock dividends and does not intend to do
so in the foreseeable future. Under the Western Sierra/Roseville agreement,
Roseville has agreed that it will not declare or pay any dividend on its shares
of Roseville common stock, other than regular cash dividends consistent with
past practices. This restriction would no longer be applicable in the event the
Western Sierra/Roseville merger is not approved by the shareholders.
    

WESTERN SIERRA FOLLOWING THE WESTERN SIERRA/LAKE COMMUNITY MERGER AND THE
WESTERN SIERRA/ROSEVILLE MERGER

   
If either or both the Western Sierra/Lake Community merger and the Western
Sierra/Roseville merger are completed, no assurance can be given that the
trading market for Western Sierra common stock will be more active than that
which currently exists for Western Sierra common stock. While it is anticipated
that Western Sierra following the Western Sierra/Lake Community merger and the
Western Sierra/Roseville merger will continue to declare stock dividends based
upon the recommendations of the Board of Directors of Western Sierra, there can
be no assurance that such dividends will occur. The payment of dividends will
depend, in any event, upon Western Sierra's earnings, financial condition, the
need for capital for expanded growth and general economic conditions.
    


                                       92
<PAGE>   102

   
                         Pro Forma Financial Statements
    

CERTAIN MATTERS DISCUSSED OR INCORPORATED BY REFERENCE IN THIS JOINT PROXY
STATEMENT/PROSPECTUS ARE FORWARD-LOOKING STATEMENTS THAT ARE SUBJECT TO RISKS
AND UNCERTAINTIES THAT COULD CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY FROM
THOSE PROJECTED IN THE FORWARD-LOOKING STATEMENTS. THESE RISKS AND UNCERTAINTIES
INCLUDE, BUT ARE NOT LIMITED TO, THOSE DESCRIBED BELOW. THEREFORE, THE
INFORMATION SET FORTH IN THIS JOINT PROXY STATEMENT/PROSPECTUS SHOULD BE
CAREFULLY CONSIDERED WHEN EVALUATING THE BUSINESS PROSPECTS OF WESTERN SIERRA,
LAKE COMMUNITY AND ROSEVILLE ON AN INDIVIDUAL AND CONSOLIDATED BASIS.

Western Sierra will account for both mergers as a pooling of interests. Pooling
of interests accounting treatment avoids the creation of goodwill in the mergers
and allows Western Sierra to avoid charges against future earnings from
amortizing goodwill. This accounting method also means that after the Western
Sierra/Lake Community merger, Western Sierra will report financial results as if
Lake Community had always been combined with Western Sierra, and after the
Western Sierra/Roseville merger, Western Sierra will report financial results as
if Roseville had always been combined with Western Sierra. If Western Sierra is
not able to use pooling of interests method of accounting in either merger, that
merger will not be completed.

   
The Statement of Income tables that follow contain information which is 
calculated by using "weighted average shares." The weighted average shares 
calculation takes into consideration both the number of shares outstanding
and the length of time the shares were outstanding during the period. The 
weighted average share calculation is then used to calculate basic and diluted 
earnings per share. 
    

WESTERN SIERRA/LAKE COMMUNITY MERGER

The following pro forma financial information combines the historical financial
information of Western Sierra and Lake Community to reflect what the results
might have been had the institutions merged in each of the earlier periods
presented. The pro forma financial information does not take into consideration
operational efficiencies or additional expenses that might have occurred as a
result of combining the institutions. The following tables show the pro forma
consolidated condensed balance sheets of Western Sierra following the Western
Sierra/Lake Community merger as of September 30, 1998 and December 31, 1997 and
pro forma consolidated condensed income statements of Western Sierra following
the Western Sierra/Lake Community merger for the nine month periods ended
September 30, 1998 and 1997 and the years ended December 31, 1997, 1996 and 1995
(collectively referred to as the "Western Sierra/Lake Community Merger Pro Forma
Financial Information.")

   
The Western Sierra/Lake Community Merger Pro Forma Financial Information and
related notes are based on the historical financial statements of Western Sierra
and Lake Community, giving effect to the Western Sierra/Lake Community merger
under the pooling of interests method of accounting and the assumptions and
adjustments in the accompanying notes to the Western Sierra/Lake Community
Merger Pro Forma Financial Information. The pro forma consolidated condensed
balance sheets assume the Western Sierra/Lake Community merger was completed on
September 30, 1998 and December 31, 1997 and the pro forma consolidated
condensed income statements assume the Western Sierra/Lake Community merger was
completed at the beginning
    


                                       93
<PAGE>   103
   
of each period. The Western Sierra/Lake Community Merger Pro Forma Financial
Information further assumes the issuance of approximately 896,473 shares of
Western Sierra common stock in exchange for all of the outstanding shares of
Lake Community common stock at September 30, 1998. The Western Sierra/Lake
Community Merger Pro Forma Financial Information is not necessarily indicative
of the financial position or results of operations of Western Sierra following
the Western Sierra/Lake Community merger as it may be in the future or as it
might have been had the Western Sierra/Lake Community merger been effected on
the assumed dates.
    

   
The Western Sierra/Lake Community Merger Pro Forma Financial Information should
be read in conjunction with the historical financial statements of Western
Sierra and Lake Community and the notes related thereto, presented elsewhere in
this joint proxy statement/prospectus. See "Index to Financial Statements."
    

WESTERN SIERRA/LAKE COMMUNITY MERGER PRO FORMA FINANCIAL INFORMATION
BASED ON POOLING OF INTERESTS METHOD OF ACCOUNTING

               EXISTING AND PRO FORMA CONSOLIDATED CAPITALIZATION
                                   (UNAUDITED)

The following table shows the existing capitalization of Western Sierra and Lake
Community and the pro forma consolidated capitalization of Western Sierra
following the Western Sierra/Lake Community merger at September 30, 1998
(dollars in thousands).

<TABLE>
<CAPTION>
                                                                                                 Pro Forma
                                                                                               Consolidated
                                                                                                 Surviving
                                    Western Sierra      Lake Community     Adjustments(1)     Western Sierra(1)
                                    --------------      --------------     --------------     -----------------
<S>                                 <C>                 <C>                <C>                <C>
Shareholders' equity:
Common stock                         $     7,381         $     3,473                            $    10,854
Retained earnings                          2,744               5,795                                  8,539
Net unrealized gains on
 available-for-sale
 securities                                  268                 165                                    433
                                     -----------         -----------          ----------        -----------
  Total shareholders'
  equity                             $    10,393         $     9,433                            $    19,826
                                     ===========         ===========          ==========        ===========

Authorized shares of
 common stock                         10,000,000          20,000,000                             10,000,000
                                     ===========         ===========          ==========        ===========
Outstanding shares                       981,448           1,298,296                              1,877,921
                                     ===========         ===========          ==========        ===========
</TABLE>

(1)   Assumes that holders of 100% of Lake Community common stock convert their
      shares into Western Sierra common stock and that an aggregate of 896,473
      shares of Western Sierra common stock are issued in the Western
      Sierra/Lake Community merger.


                                       94
<PAGE>   104
                 UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET
                               SEPTEMBER 30, 1998

<TABLE>
<CAPTION>
                                                                                                         Pro Forma
(Dollars in thousands)                                   Western               Lake                     Consolidated
                                                          Sierra            Community    Adjustments    Balance Sheet
                                                        ---------           ---------    -----------    -------------
<S>                                                     <C>                 <C>          <C>            <C>
ASSETS
Cash and due from banks                                 $   6,941           $   4,558    $                 $  11,499
Federal funds sold                                         10,600               3,500                         14,100
Loans held for sale                                         2,786                 620                          3,406
Interest-bearing deposits in banks                                              4,554                          4,554
Investment securities:
  Available-for-sale                                       30,544              12,041                         42,585
  Held-to-maturity                                          2,889                                              2,889
                                                        ---------           ---------    ----------        ---------
        Total investments                                  33,433              12,041                         45,474
                                                        ---------           ---------    ----------        ---------
Loans and leases:
  Commercial                                               18,708               4,449                         23,157
  Real estate                                              46,634              28,980                         75,614
  Real estate construction                                  7,686               1,157                          8,843
  Lease financing                                           1,442                                              1,442
  Agricultural                                                                 18,026                         18,026
  Consumer                                                    583               2,530                          3,113
                                                        ---------           ---------                      ---------
        Total loans                                        75,053              55,142                        130,195
  Deferred fees and costs, net                               (209)               (204)                          (413)
  Allowance for loan and lease losses                      (1,025)             (1,161)                        (2,186)
                                                        ---------           ---------    ----------        ---------
        Net loans                                          73,819              53,777                        127,596
                                                        ---------           ---------    ----------        ---------

Other real estate                                           1,553                 630                          2,183
Bank premises and equipment, net                            3,481               2,894                          6,375
Accrued interest receivable and other assets                2,668               2,467                          5,135
                                                        ---------           ---------    ----------        ---------
                                                        $ 135,281           $  85,041    $                 $ 220,322
                                                        =========           =========    ==========        =========

LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits:
  Noninterest-bearing                                   $  31,552           $  12,765    $                 $  44,317
  Interest-bearing                                         92,177              62,106                        154,283
                                                        ---------           ---------    ----------        ---------
        Total deposits                                    123,729              74,871                        198,600

Accrued interest payable and other liabilities              1,159                 737                          1,896
                                                        ---------           ---------    ----------        ---------
        Total liabilities                                 124,888              75,608                        200,496
                                                        ---------           ---------    ----------        ---------
Shareholders' equity:
  Common stock                                              7,381               3,473                         10,854
  Retained earnings                                         2,744               5,795                          8,539
  Unrealized gains on available-for-sale
     investment securities, net of taxes                      268                 165                            433
                                                        ---------           ---------    ----------        ---------
        Total shareholders' equity                         10,393               9,433                         19,826
                                                        ---------           ---------    ----------        ---------
                                                        $ 135,281           $  85,041    $                 $ 220,322
                                                        =========           =========    ==========        =========
</TABLE>


                                       95
<PAGE>   105
                 UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET
                                DECEMBER 31, 1997


<TABLE>
<CAPTION>
                                                                                                                   Pro Forma
(Dollars in thousands)                                   Western              Lake                               Consolidated
                                                         Sierra             Community        Adjustments         Balance Sheet
                                                        ---------           ---------        -----------         -------------
<S>                                                     <C>                 <C>              <C>                  <C>
ASSETS
Cash and due from banks                                 $   5,296           $   5,236          $                    $  10,532
Federal funds sold                                          6,550               4,000                                  10,550
Loans held for sale                                         1,767                 680                                   2,447
Interest-bearing deposits in banks                                              4,557                                   4,557
Investment securities:
  Available-for-sale                                       15,799              11,976                                  27,775
  Held-to-maturity                                          4,950                                                       4,950
                                                        ---------           ---------          ---------            ---------
        Total investments                                  20,749              11,976                                  32,725
                                                        ---------           ---------          ---------            ---------
Loans and leases:
  Commercial                                               14,882               5,045                                  19,927
  Real estate                                              40,052              32,003                                  72,055
  Real estate construction                                 13,263                 435                                  13,698
  Lease financing                                             698                                                         698
  Agricultural                                                                 13,942                                  13,942
  Consumer                                                    615               2,919                                   3,534
                                                        ---------           ---------                               ---------
        Total loans                                        69,510              54,344                                 123,854

  Deferred fees and costs, net                               (371)               (182)                                   (553)
  Allowance for loan and lease losses                        (948)               (952)                                 (1,900)
                                                        ---------           ---------          ---------            ---------
        Net loans                                          68,191              53,210                                 121,401
                                                        ---------           ---------          ---------            ---------

Other real estate                                             967                 598                                   1,565
Bank premises and equipment, net                            3,027               3,077                                   6,104
Accrued interest receivable and other assets                2,313               2,186                                   4,499
                                                        ---------           ---------          ---------            ---------
                                                        $ 108,860           $  85,520          $                    $ 194,380
                                                        =========           =========          =========            =========

LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits:
  Noninterest-bearing                                   $  19,215           $  12,927          $                    $  32,142
  Interest-bearing                                         79,494              63,112                                 142,606
                                                        ---------           ---------          ---------            ---------
        Total deposits                                     98,709              76,039                                 174,748

Accrued interest payable and other liabilities              1,153                 821                                   1,974
                                                        ---------           ---------          ---------            ---------
        Total liabilities                                  99,862              76,860                                 176,722
                                                        ---------           ---------          ---------            ---------
Shareholders' equity:
  Common stock                                              7,001               3,178                                  10,179
  Retained earnings                                         1,908               5,442                                   7,350
  Unrealized gains on available-for-sale
     investment securities, net of taxes                       89                  40                                     129
                                                        ---------           ---------          ---------            ---------
        Total shareholders' equity                          8,998               8,660                                  17,658
                                                        ---------           ---------          ---------            ---------
                                                        $ 108,860           $  85,520                               $ 194,380
                                                        =========           =========          =========            =========
</TABLE>


                                       96
<PAGE>   106
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME


<TABLE>
<CAPTION>
                                                                 For the Nine Months Ended September 30, 1998
                                                     -----------------------------------------------------------------------
(Dollars in thousands)                                 Western              Lake                                  Pro Forma
                                                       Sierra            Community         Adjustments          Consolidated
                                                     ----------          ----------        -----------          ------------
<S>                                                  <C>                 <C>               <C>                  <C>
Interest income
  Interest and fees on loans and leases              $    5,550          $    3,935         $                    $    9,485
  Interest on deposits in banks                                                 223                                     223
  Interest on investment securities                       1,134                 497                                   1,631
  Interest on federal funds sold                            320                 184                                     504
                                                     ----------          ----------         -----------          ----------
        Total interest income                             7,004               4,839                                  11,843

Interest expense on deposits                              2,601               1,916                                   4,517
                                                     ----------          ----------         -----------          ----------
        Net interest income                               4,403               2,923                                   7,326

Provision for loan and lease losses                         250                 270                                     520
                                                     ----------          ----------         -----------          ----------
        Net interest income after provision
          for loan and lease losses                       4,153               2,653                                   6,806
                                                     ----------          ----------         -----------          ----------
Noninterest income:
  Service charges and fees                                  534                 494                                   1,028
  Gain on sale of loans                                   1,093                  10                                   1,103
  Other                                                     215                                                         215
                                                     ----------          ----------         -----------          ----------
        Total noninterest income                          1,842                 504                                   2,346
                                                     ----------          ----------         -----------          ----------
Other expenses:
  Salaries and employee benefits                          2,621               1,416                                   4,037
  Occupancy                                                 324                 213                                     537
  Equipment                                                 420                 272                                     692
  Other                                                   1,323                 756                                   2,079
                                                     ----------          ----------         -----------          ----------
        Total other expenses                              4,688               2,657                                   7,345
                                                     ----------          ----------         -----------          ----------
        Income before income taxes                        1,307                 500                                   1,807

Income taxes                                                472                 147                                     619
                                                     ----------          ----------         -----------          ----------

        Net income                                   $      835          $      353         $                    $    1,188
                                                     ==========          ==========         ===========          ==========
Basic earnings per share                             $     0.86          $     0.28         $                    $     0.64
                                                     ==========          ==========         ===========          ==========
Weighted average shares of common stock                 970,810           1,265,387                               1,844,560(1)
                                                     ==========          ==========         ===========          ==========
Diluted earnings per share                           $     0.80          $     0.27         $                    $     0.61
                                                     ==========          ==========         ===========          ==========
Weighted average shares of common stock
 and common stock equivalents                         1,038,285           1,329,428         $                     1,956,255(1)
                                                     ==========          ==========         ===========          ==========
</TABLE>

   
- ----------
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Lake Community before the combination multiplied by the
      Lake Community conversion rate of .6905 to the weighted average shares for
      Western Sierra before the combination.
    


                                       97
<PAGE>   107
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME


<TABLE>
<CAPTION>
                                                                    For the Nine Months Ended September 30, 1997
                                                        ------------------------------------------------------------------
(Dollars in thousands)                                   Western               Lake                            Pro Forma
                                                          Sierra             Community       Adjustments      Consolidated
                                                        ----------          -----------      -----------      ------------
<S>                                                     <C>                 <C>              <C>              <C>
Interest income
  Interest and fees on loans and leases                 $    5,106          $     4,146       $               $     9,252
  Interest on deposits in banks                                                     165                               165
  Interest on investment securities                            912                  434                             1,346
  Interest on federal funds sold                               150                  123                               273
                                                        ----------          -----------       ---------        ----------
        Total interest income                                6,168                4,868                            11,036

Interest expense on deposits                                 2,217                1,895                             4,112
                                                        ----------          -----------       ---------        ----------
        Net interest income                                  3,951                2,973                             6,924

Provision for loan and lease losses                            193                  270                               463
                                                        ----------          -----------       ---------        ----------
        Net interest income after provision
          for loan and lease losses                          3,758                2,703                             6,461
                                                        ----------          -----------       ---------        ----------
Noninterest income:
  Service charges and fees                                     557                  389                               946
  Gain on sale of loans                                        562                   17                               579
  Gain (loss) on sale of investment securities                  16                   (8)                                8
  Other                                                        208                   15                               223
                                                        ----------          -----------       ---------        ----------
        Total noninterest income                             1,343                  413                             1,756
                                                        ----------          -----------       ---------        ----------
Other expenses:
  Salaries and employee benefits                             2,094                1,267                             3,361
  Occupancy                                                    296                  204                               500
  Equipment                                                    337                  257                               594
  Other                                                      1,213                  680                             1,893
                                                        ----------          -----------       ---------        ----------
        Total other expenses                                 3,940                2,408                             6,348
                                                        ----------          -----------       ---------        ----------
        Income before income taxes                           1,161                  708                             1,869

Income taxes                                                   453                  258                               711
                                                        ----------          -----------       ---------        ----------
        Net income                                      $      708          $       450       $                $    1,158
                                                        ==========          ===========       =========        ==========

Basic earnings per share                                $     0.73          $      0.36       $                $     0.64
                                                        ==========          ===========       =========        ==========
Weighted average shares of common stock                    965,403            1,240,546                         1,822,000(1)
                                                        ==========          ===========       =========        ==========
Diluted earnings per share                              $     0.70          $      0.35       $                $     0.61
                                                        ==========          ===========       =========        ==========
Weighted average shares of common stock
 and common stock equivalents                            1,009,311            1,276,729                         1,890,892(1)
                                                        ==========          ===========       =========        ==========
</TABLE>

   
- ----------
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Lake Community before the combination multiplied by the
      Lake Community conversion rate of .6905 to the weighted average shares for
      Western Sierra before the combination.
    


                                       98
<PAGE>   108
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME


<TABLE>
<CAPTION>
                                                                       For the Year Ended December 31, 1997
                                                        -----------------------------------------------------------------
(Dollars in thousands)                                  Western              Lake                             Pro Forma
                                                         Sierra            Community        Adjustments      Consolidated
                                                        --------          -----------       ------------     ------------
<S>                                                     <C>               <C>               <C>               <C>
Interest income
  Interest and fees on loans and leases                 $  6,978          $     5,529       $                  $   12,507
  Interest on deposits in banks                                                   233                                 233
  Interest on investment securities                        1,242                  595                               1,837
  Interest on federal funds sold                             210                  203                                 413
                                                        --------          -----------       ------------       ----------
        Total interest income                              8,430                6,560                              14,990

Interest expense on deposits                               3,051                2,562                               5,613
                                                        --------          -----------       ------------       ----------

        Net interest income                                5,379                3,998                               9,377

Provision for loan and lease losses                          243                  263                                 506
                                                        --------          -----------       ------------       ----------
        Net interest income after provision
          for loan and lease losses                        5,136                3,735                               8,871
                                                        --------          -----------       ------------       ----------
Noninterest income:
  Service charges and fees                                   765                  442                               1,207
  Gain on sale of loans                                      972                   49                               1,021
  Gain (loss) on sale of investment securities                21                   (8)                                 13
  Other                                                      279                  147                                 426
                                                        --------          -----------       ------------       ----------
        Total noninterest income                           2,037                  630                               2,667
                                                        --------          -----------       ------------       ----------
Other expenses:
  Salaries and employee benefits                           2,988                1,617                               4,605
  Occupancy                                                  400                  214                                 614
  Equipment                                                  461                  343                                 804
  Other                                                    1,682                1,048                               2,730
                                                        --------          -----------       ------------       ----------
        Total other expenses                               5,531                3,222                               8,753
                                                        --------          -----------       ------------       ----------
        Income before income taxes                         1,642                1,143                               2,785

Income taxes                                                 639                  377                               1,016
                                                        --------          -----------       ------------       ----------
        Net income                                      $  1,003          $       766       $                  $    1,769
                                                        ========          ===========       ============       ==========
Basic earnings per share                                $   1.08          $      0.62       $                  $     0.99
                                                        ========          ===========       ============       ==========
Weighted average shares of common stock                  932,531            1,240,546                           1,789,128(1)
                                                        ========          ===========       ============       ==========
Diluted earnings per share                              $   1.02          $      0.59       $                  $     0.94
                                                        ========          ===========       ============       ==========
Weighted average shares of common stock
 and common stock equivalents                            986,706            1,297,954                           1,882,943(1)
                                                        ========          ===========       ============       ==========
</TABLE>

   
- ----------
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Lake Community before the combination multiplied by the
      Lake Community conversion rate of .6905 to the weighted average shares for
      Western Sierra before the combination.
    


                                       99
<PAGE>   109
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME


<TABLE>
<CAPTION>
                                                                       For the Year Ended December 31, 1996
                                                        ------------------------------------------------------------------
(Dollars in thousands)                                  Western             Lake                               Pro Forma
                                                         Sierra           Community        Adjustments        Consolidated
                                                        --------          ----------       -----------        ------------
<S>                                                     <C>               <C>              <C>                <C>
Interest income
  Interest and fees on loans and leases                 $  5,544          $    5,704        $                  $   11,248
  Interest on deposits in banks                                                  198                                  198
  Interest on investment securities                          751                 777                                1,528
  Interest on federal funds sold                             146                 168                                  314
                                                        --------          ----------        ---------          ----------
        Total interest income                              6,441               6,847                               13,288

Interest expense                                           2,185               2,845                                5,030
                                                        --------          ----------        ---------          ----------
        Net interest income                                4,256               4,002                                8,258

Provision for loan and lease losses                          458                 477                                  935
                                                        --------          ----------        ---------          ----------
        Net interest income after provision
          for loan and lease losses                        3,798               3,525                                7,323
                                                        --------          ----------        ---------          ----------
Noninterest income:
  Service charges and fees                                   688                 415                                1,103
  Gain on sale of loans                                      684                 146                                  830
  Gain (loss) on sale of investment securities                11                  20                                   31
  Other                                                      309                  97                                  406
                                                        --------          ----------        ---------          ----------
        Total noninterest income                           1,692                 678                                2,370
                                                        --------          ----------        ---------          ----------
Other expenses:
  Salaries and employee benefits                           2,355               1,683                                4,038
  Occupancy                                                  352                 255                                  607
  Equipment                                                  399                 342                                  741
  Other                                                    1,176               1,244                                2,420
                                                        --------          ----------        ---------          ----------
        Total other expenses                               4,282               3,524                                7,806
                                                        --------          ----------        ---------          ----------
        Income before income taxes                         1,208                 679                                1,887

Income taxes                                                 470                 203                                  673
                                                        --------          ----------        ---------          ----------
        Net income                                      $    738          $      476        $                  $    1,214
                                                        ========          ==========        =========          ==========
Basic earnings per share                                $   0.97          $     0.38        $                  $     0.75
                                                        ========          ==========        =========          ==========
Weighted average shares of common stock                  759,017           1,240,491                            1,615,576(1)
                                                        ========          ==========        =========          ==========
Diluted earnings per share                              $   0.94          $     0.36        $                  $     0.72
                                                        ========          ==========        =========          ==========
Weighted average shares of common stock
 and common stock equivalents                            782,318           1,308,758                            1,686,015(1)
                                                        ========          ==========        =========          ==========
</TABLE>

   
- ----------
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Lake Community before the combination multiplied by the
      Lake Community conversion rate of .6905 to the weighted average shares for
      Western Sierra before the combination.
    


                                      100
<PAGE>   110
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME


<TABLE>
<CAPTION>
                                                                      For the Year Ended December 31, 1995
                                                        ---------------------------------------------------------------
(Dollars in thousands)                                   Western            Lake                            Pro Forma
                                                         Sierra           Community     Adjustments        Consolidated
                                                        ---------        ----------     -----------        ------------
<S>                                                     <C>              <C>            <C>                <C>
Interest income
  Interest and fees on loans and leases                 $   4,938        $    5,794      $                  $   10,732
  Interest on deposits in banks                                                 160                                160
  Interest on investment securities                           605               819                              1,424
  Interest on federal funds sold                              141               229                                370
                                                        ---------        ----------      ---------          ----------
        Total interest income                               5,684             7,002                             12,686

Interest expense                                            1,875             3,056                              4,931
                                                        ---------        ----------      ---------          ----------

        Net interest income                                 3,809             3,946                              7,755

Provision for loan and lease losses                            80               210                                290
                                                        ---------        ----------      ---------          ----------
        Net interest income after provision
          for loan and lease losses                         3,729             3,736                              7,465
                                                        ---------        ----------      ---------          ----------
Noninterest income:
  Service charges and fees                                    690               444                              1,134
  Gain on sale of loans                                       427               115                                542
  (Loss) gain on sale of investment securities                (30)               40                                 10
  Other                                                       140                82                                222
                                                        ---------        ----------      ---------          ----------
        Total noninterest income                            1,227               681                              1,908
                                                        ---------        ----------      ---------          ----------

Other expenses:
  Salaries and employee benefits                            2,091             1,689                              3,780
  Occupancy                                                   308               182                                490
  Equipment                                                   369               237                                606
  Other                                                     1,160             1,193                              2,353
                                                        ---------        ----------      ---------          ----------
        Total other expenses                                3,928             3,301                              7,229
                                                        ---------        ----------      ---------          ----------

        Income before income taxes                          1,028             1,116                              2,144

Income taxes                                                  377               335                                712
                                                        ---------        ----------      ---------          ----------
        Net income                                      $     651        $      781      $                  $    1,432
                                                        =========        ==========      =========          ==========
Basic earnings per share                                $    0.96        $     0.63      $                  $     0.93
                                                        =========        ==========      =========          ==========
Weighted average shares of common stock                   681,030         1,239,791                          1,537,106(1)
                                                        =========        ==========      =========          ==========
Diluted earnings per share                              $    0.94        $     0.59      $                  $     0.90
                                                        =========        ==========      =========          ==========
Weighted average shares of common stock
 and common stock equivalents                             689,696         1,315,310                          1,597,918(1)
                                                        =========        ==========      =========          ==========
</TABLE>

   
- ----------
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Lake Community before the combination multiplied by the
      Lake Community conversion rate of .6905 to the weighted average shares for
      Western Sierra before the combination.
    


                                      101
<PAGE>   111
                           COMPARATIVE PER SHARE DATA
                                   (UNAUDITED)

   
The following table shows the selected historical financial information for
Western Sierra and Lake Community and pro forma consolidated financial
information in the Western Sierra/Lake Community merger. The table assumes that
the Western Sierra/Lake Community merger was completed at the beginning of the
periods presented, and that each outstanding share of Lake Community common
stock is converted into .6905 shares of Western Sierra common stock. See
"Description of the Western Sierra/Lake Community Merger--Lake Community
Conversion Rate and Exchange of Shares and Options."
    

<TABLE>
<CAPTION>
                                       Nine Months Ended                Year Ended
                                         September 30,                 December 31,
                                      ------------------      ------------------------------
                                       1998        1997        1997        1996        1995
                                      ------      ------      ------      ------      ------
<S>                                   <C>         <C>         <C>         <C>         <C>
Amounts per common share:
 Western Sierra historical
   Net income(1)(2)                   $  .80      $  .70      $ 1.02      $  .94      $  .94
   Book value(3)                      $10.59      $ 9.15      $ 9.51      $ 9.69      $ 8.62
 Lake Community historical
   Net income(1)(2)                   $  .27      $  .35      $  .59      $  .36      $  .59
   Book value(3)                      $ 7.27      $ 6.98      $ 6.98      $ 6.57      $ 6.50
   Dividends declared                 $    0      $    0      $  .27      $  .20      $  .20
 Pro forma amounts per
  common share of Western Sierra
   Net income(1)(4)                   $  .61      $  .61      $  .94      $  .72      $  .90
   Book value(5)                      $10.56      $ 9.61      $ 9.80      $ 9.60      $ 9.09
 Pro forma amounts per
  common share of Lake Community
   Net income(1)(6)                   $  .42      $  .42      $  .65      $  .50      $  .62
   Book value(6)                      $ 7.29      $ 6.64      $ 6.76      $ 6.63      $ 6.28
</TABLE>

- ----------

(1)   All net income per share data are diluted per share data.

(2)   Diluted income per share calculations use the weighted average common
      stock and common stock equivalent shares outstanding for each period for
      Western Sierra and Lake Community.

(3)   Book value per share is based on the actual number of shares outstanding
      at the end of the period.

   
(4)   Pro forma net income per share is determined in the same manner as
      footnote (2) above except the Lake Community common shares are multiplied
      by the Lake Community conversion rate of .6905.

(5)   Pro forma book value per share is determined in the same manner as
      footnote (3) above except the Lake Community common shares are multiplied
      by the Lake Community conversion rate of .6905.

(6)   Lake Community pro forma equivalents are computed by multiplying the pro
      forma per share data of the consolidated entity by the Lake Community
      conversion rate of .6905.
    


                                      102
<PAGE>   112
WESTERN SIERRA/ROSEVILLE MERGER

The following pro forma financial information combines the historical financial
information of Western Sierra and Roseville to reflect what the results might
have been had the institutions merged in each of the earlier periods presented.
The pro forma financial information does not take into consideration operational
efficiencies or additional expenses that might have occurred as a result of
combining the institutions. The following tables show the pro forma consolidated
condensed balance sheets of Western Sierra following the Western
Sierra/Roseville merger as of September 30, 1998 and December 31, 1997 and pro
forma consolidated condensed income statements of Western Sierra following the
Western Sierra/Roseville merger for the nine month periods ended September 30,
1998 and 1997 and the years ended December 31, 1997, 1996 and 1995 (collectively
referred to as the "Western Sierra/Roseville Merger Pro Forma Financial
Information.")

The Western Sierra/Roseville Merger Pro Forma Financial Information and related
notes are based on the historical financial statements of Western Sierra and
Roseville, giving effect to the Western Sierra/Roseville merger under the
pooling of interests method of accounting and the assumptions and adjustments in
the accompanying notes to the Western Sierra/Roseville Merger Pro Forma
Financial Information. The pro forma consolidated condensed balance sheets
assume the Western Sierra/Roseville merger was completed on September 30, 1998
and December 31, 1997 and the pro forma consolidated condensed income statements
assume the Western Sierra/Roseville merger was completed at the beginning of
each period. The Western Sierra/Roseville Merger Pro Forma Financial Information
further assumes the issuance of approximately 449,045 shares of Western Sierra
common stock in exchange for all of the outstanding shares of Roseville common
stock at September 30, 1998. The Western Sierra/Roseville Merger Pro Forma
Financial Information is not necessarily indicative of the financial position or
results of operations of Western Sierra following the Western Sierra/Roseville
merger as it may be in the future or as it might have been had the Western
Sierra/Roseville merger been effected on the assumed dates.

   
The Western Sierra/Roseville Merger Pro Forma Financial Information should be
read in conjunction with the historical financial statements of Western Sierra
and Roseville and the notes related thereto, presented elsewhere in this joint
proxy statement/prospectus. See "Index to Financial Statements."
    


                                      103
<PAGE>   113
WESTERN SIERRA/ROSEVILLE MERGER PRO FORMA FINANCIAL INFORMATION BASED ON POOLING
OF INTERESTS METHOD OF ACCOUNTING

               EXISTING AND PRO FORMA CONSOLIDATED CAPITALIZATION
                                   (UNAUDITED)

The following table shows the existing capitalization of Western Sierra and
Roseville and the pro forma consolidated capitalization of Western Sierra
following the Western Sierra/Roseville merger at September 30, 1998 (dollars in
thousands).

<TABLE>
<CAPTION>
                                                                                     Pro Forma
                                                                                   Consolidated
                                 Western                                             Surviving
                                 Sierra           Roseville     Adjustments(1)    Western Sierra(1)
                               -----------        ----------    -------------     ----------------
<S>                            <C>                <C>           <C>               <C>
Shareholders' equity:
Common stock                   $     7,381        $    2,511                        $     9,892
Retained earnings                    2,744             2,174                              4,918
Net unrealized gains on
 available-for-sale
 securities                            268                19                                287
                               -----------        ----------     -----------        -----------
    Total shareholders'
     equity                    $    10,393        $    4,704     $                  $    15,097
                               ===========        ==========     ===========        ===========
Authorized shares of
 common stock                   10,000,000         5,000,000                         10,000,000
                               ===========        ==========     ===========        ===========
Outstanding shares                 981,448           370,805                          1,430,493
                               ===========        ==========     ===========        ===========
</TABLE>

- ----------
(1)   Assumes that holders of 100% of Roseville common stock convert their
      shares into Western Sierra common stock and that an aggregate of 449,045
      shares of Western Sierra common stock are issued in the Western
      Sierra/Roseville merger.


                                      104
<PAGE>   114
                 UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET
                               SEPTEMBER 30, 1998

<TABLE>
<CAPTION>
                                                                                                                 Pro Forma
(Dollars in thousands)                                   Western                                                Consolidated
                                                         Sierra             Roseville      Adjustments          Balance Sheet
                                                        ---------           ---------      -----------          -------------
<S>                                                     <C>                 <C>            <C>                  <C>
ASSETS

Cash and due from banks                                 $   6,941           $   4,252      $                      $  11,193
Federal funds sold                                         10,600              10,050                                20,650
Loans held for sale                                         2,786                 305                                 3,091
Investment securities:
  Available-for-sale                                       30,544               4,218                                34,762
  Held-to-maturity                                          2,889                                                     2,889
                                                        ---------           ---------      -----------            ---------
        Total investments                                  33,433               4,218                                37,651
                                                        ---------           ---------      -----------            ---------
Loans and leases:
  Commercial                                               18,708               6,694                                25,402
  Real estate                                              46,634              15,325                                61,959
  Real estate construction                                  7,686               6,965                                14,651
  Lease financing                                           1,442                                                     1,442
  Consumer                                                    583               2,184                                 2,767
                                                        ---------           ---------      -----------            ---------
        Total loans                                        75,053              31,168                               106,221
  Deferred fees and costs, net                               (209)                (76)                                 (285)
  Allowance for loan and lease losses                      (1,025)               (296)                               (1,321)
                                                        ---------           ---------      -----------            ---------
        Net loans                                          73,819              30,796                               104,615
                                                        ---------           ---------      -----------            ---------

Other real estate                                           1,553                                                     1,553
Bank premises and equipment, net                            3,481               1,646                                 5,127
Accrued interest receivable and other assets                2,668               2,104                                 4,772
                                                        ---------           ---------      -----------            ---------
                                                        $ 135,281           $  53,371      $                      $ 188,652
                                                        =========           =========      ===========            =========
LIABILITIES AND SHAREHOLDERS' EQUITY

Deposits:
  Noninterest-bearing                                   $  31,552           $  10,880      $                      $  42,432
  Interest-bearing                                         92,177              37,596                               129,773
                                                        ---------           ---------      -----------            ---------
        Total deposits                                    123,729              48,476                               172,205

Accrued interest payable and other liabilities              1,159                 191                                 1,350
                                                        ---------           ---------      -----------            ---------
        Total liabilities                                 124,888              48,667                               173,555
                                                        ---------           ---------      -----------            ---------
Shareholders' equity:
  Common stock                                              7,381               2,511                                 9,892
  Retained earnings                                         2,744               2,174                                 4,918
  Unrealized gains on available-for-sale
    investment securities, net of taxes                       268                  19                                   287
                                                        ---------           ---------      -----------            ---------
        Total shareholders' equity                         10,393               4,704                                15,097
                                                        ---------           ---------      -----------            ---------
                                                        $ 135,281           $  53,371      $                      $ 188,652
                                                        =========           =========      ===========            =========
</TABLE>


                                      105
<PAGE>   115
                 UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET
                                DECEMBER 31, 1997

<TABLE>
<CAPTION>
                                                                                                                 Pro Forma
(Dollars in thousands)                                   Western                                                Consolidated
                                                         Sierra             Roseville       Adjustments         Balance Sheet
                                                        ---------           ---------       -----------         -------------
<S>                                                     <C>                 <C>             <C>                 <C>
ASSETS

Cash and due from banks                                 $   5,296           $   1,830       $                     $   7,126
Federal funds sold                                          6,550               6,720                                13,270
Loans held for sale                                         1,767                 227                                 1,994
Investment securities:
  Available-for-sale                                       15,799               4,010                                19,809
  Held-to-maturity                                          4,950                                                     4,950
                                                        ---------           ---------       -----------           ---------
        Total investments                                  20,749               4,010                                24,759
                                                        ---------           ---------       -----------           ---------
Loans and leases:
  Commercial                                               14,882               8,715                                23,597
  Real estate                                              40,052              16,279                                56,331
  Real estate construction                                 13,263               7,319                                20,582
  Lease financing                                             698                                                       698
  Consumer                                                    615               2,623                                 3,238
                                                        ---------           ---------       -----------           ---------
        Total loans                                        69,510              34,936                               104,446
  Deferred fees and costs, net                               (371)                (87)                                 (458)
  Allowance for loan and lease losses                        (948)               (724)                               (1,672)
                                                        ---------           ---------       -----------           ---------
        Net loans                                          68,191              34,125                               102,316
                                                        ---------           ---------       -----------           ---------

Other real estate                                             967                                                       967
Bank premises and equipment, net                            3,027               1,722                                 4,749
Accrued interest receivable and other assets                2,313               1,954                                 4,267
                                                        ---------           ---------       -----------           ---------
                                                        $ 108,860           $  50,588       $                     $ 159,448
                                                        =========           =========       ===========           =========

LIABILITIES AND SHAREHOLDERS' EQUITY

Deposits:
  Noninterest-bearing                                   $  19,215           $   8,527       $                     $  27,742
  Interest-bearing                                         79,494              37,823                               117,317
                                                        ---------           ---------       -----------           ---------
        Total deposits                                     98,709              46,350                               145,059

Accrued interest payable and other liabilities              1,153                 274                                 1,427
                                                        ---------           ---------       -----------           ---------
        Total liabilities                                  99,862              46,624                               146,486
                                                        ---------           ---------       -----------           ---------
Shareholders' equity:
  Common stock                                              7,001               2,021                                 9,022
  Retained earnings                                         1,908               1,932                                 3,840
  Unrealized gains on available-for-sale
     investment securities, net of taxes                       89                  11                                   100
                                                        ---------           ---------       -----------           ---------
        Total shareholders' equity                          8,998               3,964                                12,962
                                                        ---------           ---------       -----------           ---------
                                                        $ 108,860           $  50,588       $                     $ 159,448
                                                        =========           =========       ===========           =========
</TABLE>


                                      106
<PAGE>   116
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                              For the Nine Months Ended September 30, 1998
                                                     -------------------------------------------------------------------
(Dollars in thousands)                                 Western                                               Pro Forma
                                                       Sierra           Roseville       Adjustments         Consolidated
                                                     ----------         ---------       -----------         ------------
Interest income
<S>                                                  <C>                 <C>            <C>                 <C>
  Interest and fees on loans and leases              $    5,550          $  2,524       $                    $    8,074
  Interest on investment securities                       1,134               174                                 1,308
  Interest on federal funds sold                            320               292                                   612
                                                     ----------          --------       -----------          ----------
        Total interest income                             7,004             2,990                                 9,994

Interest expense on deposits                              2,601             1,303                                 3,904
                                                     ----------          --------       -----------          ----------
        Net interest income                               4,403             1,687                                 6,090

Provision for loan and lease losses                         250               105                                   355
                                                     ----------          --------       -----------          ----------
        Net interest income after provision
          for loan and lease losses                       4,153             1,582                                 5,735
                                                     ----------          --------       -----------          ----------
Noninterest income:
  Service charges and fees                                  534                51                                   585
  Gain on sale of loans                                   1,093               187                                 1,280
  Other                                                     215               177                                   392
                                                     ----------          --------       -----------          ----------
        Total noninterest income                          1,842               415                                 2,257
                                                     ----------          --------       -----------          ----------
Other expenses:
  Salaries and employee benefits                          2,621               705                                 3,326
  Occupancy                                                 324               105                                   429
  Equipment                                                 420                98                                   518
  Other                                                   1,323               686                                 2,009
                                                     ----------          --------       -----------          ----------
        Total other expenses                              4,688             1,594                                 6,282
                                                     ----------          --------       -----------          ----------
        Income before income taxes                        1,307               403                                 1,710

Income taxes                                                472               161                                   633
                                                     ----------          --------       -----------          ----------
        Net income                                   $      835          $    242       $                    $    1,077
                                                     ==========          ========       ===========          ==========
Basic earnings per share                             $     0.86          $   0.75       $                    $     0.79
                                                     ==========          ========       ===========          ==========
Weighted average shares of common stock                 970,810           320,158                             1,358,521(1)
                                                     ==========          ========       ===========          ==========
Diluted earnings per share                           $     0.80          $   0.72       $                    $     0.75
                                                     ==========          ========       ===========          ==========
Weighted average shares of common stock
 and common stock equivalents                         1,038,285           333,661                             1,442,348(1)
                                                     ==========          ========       ===========          ==========
</TABLE>

- ----------

   
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Roseville before the combination multiplied by the
      Roseville conversion rate of 1.2110 to the weighted average shares for
      Western Sierra before the combination.
    


                                      107
<PAGE>   117
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                                   For the Nine Months Ended September 30, 1997
                                                     -------------------------------------------------------------------
(Dollars in thousands)                                 Western                                               Pro Forma
                                                       Sierra           Roseville      Adjustments          Consolidated
                                                     ----------         ---------      -----------          ------------
<S>                                                  <C>                <C>            <C>                 <C>
Interest income
  Interest and fees on loans and leases              $    5,106          $  2,432      $                     $    7,538
  Interest on investment securities                         912               202                                 1,114
  Interest on federal funds sold                            150               210                                   360
                                                     ----------          --------      -----------           ----------
        Total interest income                             6,168             2,844                                 9,012

Interest expense on deposits                              2,217             1,198                                 3,415
                                                     ----------          --------      -----------           ----------
        Net interest income                               3,951             1,646                                 5,597

Provision for loan and lease losses                         193               126                                   319
                                                     ----------          --------      -----------           ----------
        Net interest income after provision
          for loan and lease losses                       3,758             1,520                                 5,278
                                                     ----------          --------      -----------           ----------
Noninterest income:
  Service charges and fees                                  557                41                                   598
  Gain on sale of loans                                     562                57                                   619
  Gain on sale of investment securities                      16                                                      16
  Other                                                     208               122                                   330
                                                     ----------          --------      -----------           ----------
        Total noninterest income                          1,343               220                                 1,563
                                                     ----------          --------      -----------           ----------
Other expenses:
  Salaries and employee benefits                          2,094               604                                 2,698
  Occupancy                                                 296                79                                   375
  Equipment                                                 337                69                                   406
  Other                                                   1,213               423                                 1,636
                                                     ----------          --------      -----------           ----------
        Total other expenses                              3,940             1,175                                 5,115
                                                     ----------          --------      -----------           ----------
        Income before income taxes                        1,161               565                                 1,726

Income taxes                                                453               226                                   679
                                                     ----------          --------      -----------           ----------
        Net income                                   $      708          $    339      $                     $    1,047
                                                     ==========          ========      ===========           ==========
Basic earnings per share                             $     0.73          $   1.06      $                     $     0.77
                                                     ==========          ========      ===========           ==========
Weighted average shares of common stock                 965,403           319,972                             1,352,521(1)
                                                     ==========          ========      ===========           ==========
Diluted earnings per share                           $     0.70          $   1.04      $                     $     0.75
                                                     ==========          ========      ===========           ==========
Weighted average shares of common stock
 and common stock equivalents                         1,009,311           324,648                             1,402,460(1)
                                                     ==========          ========      ===========           ==========
</TABLE>

- ----------

   
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Roseville before the combination multiplied by the
      Roseville conversion rate of 1.2110 to the weighted average shares for
      Western Sierra before the combination.
    


                                      108
<PAGE>   118
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                                For the Year Ended December 31, 1997
                                                     -----------------------------------------------------------------
(Dollars in thousands)                               Western                                                Pro Forma
                                                     Sierra           Roseville      Adjustments          Consolidated
                                                     --------         ---------      -----------          ------------
<S>                                                  <C>              <C>            <C>                  <C>
Interest income
  Interest and fees on loans and leases              $  6,978          $  3,287      $                     $   10,265
  Interest on investment securities                     1,242               266                                 1,508
  Interest on federal funds sold                          210               342                                   552
                                                     --------          --------      -----------           ----------
        Total interest income                           8,430             3,895                                12,325

Interest expense on deposits                            3,051             1,664                                 4,715
                                                     --------          --------      -----------           ----------
        Net interest income                             5,379             2,231                                 7,610

Provision for loan and lease losses                       243               564                                   807
                                                     --------          --------      -----------           ----------
        Net interest income after provision
          for loan and lease losses                     5,136             1,667                                 6,803
                                                     --------          --------      -----------           ----------
Noninterest income:
  Service charges and fees                                765                58                                   823
  Gain on sale of loans                                   972                99                                 1,071
  Gain on sale of investment securities                    21                                                      21
  Other                                                   279               184                                   463
                                                     --------          --------      -----------           ----------
        Total noninterest income                        2,037               341                                 2,378
                                                     --------          --------      -----------           ----------
Other expenses:
  Salaries and employee benefits                        2,988               818                                 3,806
  Occupancy                                               400               148                                   548
  Equipment                                               461                29                                   490
  Other                                                 1,682               698                                 2,380
                                                     --------          --------      -----------           ----------
        Total other expenses                            5,531             1,693                                 7,224
                                                     --------          --------      -----------           ----------
        Income before income taxes                      1,642               315                                 1,957

Income taxes                                              639               133                                   772
                                                     --------          --------      -----------           ----------
        Net income                                   $  1,003          $    182      $                     $    1,185
                                                     ========          ========      ===========           ==========
Basic earnings per share                             $   1.08          $   0.57      $                     $      .90
                                                     ========          ========      ===========           ==========
Weighted average shares of common stock               932,531           319,972                             1,320,017(1)
                                                     ========          ========      ===========           ==========
Diluted earnings per share                           $   1.02          $   0.56      $                     $      .86
                                                     ========          ========      ===========           ==========
Weighted average shares of common stock
 and common stock equivalents                         986,706           324,648                             1,379,855(1)
                                                     ========          ========      ===========           ==========
</TABLE>

- ----------

   
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Roseville before the combination multiplied by the
      Roseville conversion rate of 1.2110 to the weighted average shares for
      Western Sierra before the combination.
    


                                      109
<PAGE>   119
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                                 For the Year Ended December 31, 1996
                                                     -----------------------------------------------------------------
(Dollars in thousands)                               Western                                               Pro Forma
                                                     Sierra           Roseville      Adjustments          Consolidated
                                                     --------         ---------      -----------          ------------
<S>                                                  <C>              <C>            <C>                  <C>
Interest income
  Interest and fees on loans and leases              $  5,544          $  2,545      $                     $    8,089
  Interest on investment securities                       751               232                                   983
  Interest on federal funds sold                          146               251                                   397
                                                     --------          --------      -----------           ----------
        Total interest income                           6,441             3,028                                 9,469

Interest expense on deposits                            2,185             1,331                                 3,516
                                                     --------          --------      -----------           ----------
        Net interest income                             4,256             1,697                                 5,953

Provision for loan and lease losses                       458                89                                   547
                                                     --------          --------      -----------           ----------
        Net interest income after provision
          for loan and lease losses                     3,798             1,608                                 5,406
                                                     --------          --------      -----------           ----------
Noninterest income:
  Service charges and fees                                688                33                                   721
  Gain on sale of loans                                   684                58                                   742
  Gain on sale of investment securities                    11                                                      11
  Other                                                   309               137                                   446
                                                     --------          --------      -----------           ----------
        Total noninterest income                        1,692               228                                 1,920
                                                     --------          --------      -----------           ----------
Other expenses:
  Salaries and employee benefits                        2,355               701                                 3,056
  Occupancy                                               352                53                                   405
  Equipment                                               399                97                                   496
  Other                                                 1,176               479                                 1,655
                                                     --------          --------      -----------           ----------
        Total other expenses                            4,282             1,330                                 5,612
                                                     --------          --------      -----------           ----------
        Income before income taxes                      1,208               506                                 1,714

Income taxes                                              470               204                                   674
                                                     --------          --------      -----------           ----------
        Net income                                   $    738          $    302      $                     $    1,040
                                                     ========          ========      ===========           ==========
Basic earnings per share                             $   0.97          $   0.94      $                     $     0.91
                                                     ========          ========      ===========           ==========
Weighted average shares of common stock               759,017           319,872                             1,146,382(1)
                                                     ========          ========      ===========           ==========
Diluted earnings per share                           $   0.94          $   0.93      $                     $     0.88
                                                     ========          ========      ===========           ==========
Weighted average shares of common stock
 and common stock equivalents                         782,318           324,622                             1,175,435(1)
                                                     ========          ========      ===========           ==========
</TABLE>

- ----------

   
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Roseville before the combination multiplied by the
      Roseville conversion rate of 1.2110 to the weighted average shares for
      Western Sierra before the combination.
    


                                      110
<PAGE>   120
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                                     For the Year Ended December 31, 1995
                                                     ---------------------------------------------------------------------
(Dollars in thousands)                                Western                                                  Pro Forma
                                                      Sierra             Roseville        Adjustments         Consolidated
                                                     ---------           ---------        -----------         ------------
<S>                                                  <C>                 <C>              <C>                  <C>
Interest income
  Interest and fees on loans and leases              $   4,938           $   2,164        $                    $    7,102
  Interest on investment securities                        605                 274                                    879
  Interest on federal funds sold                           141                 226                                    367
                                                     ---------           ---------        -----------          ----------
        Total interest income                            5,684               2,664                                  8,348

Interest expense on deposits                             1,875               1,288                                  3,163
                                                     ---------           ---------        -----------          ----------
        Net interest income                              3,809               1,376                                  5,185

Provision for loan and lease losses                         80                  55                                    135
                                                     ---------           ---------        -----------          ----------
        Net interest income after provision
          for loan and lease losses                      3,729               1,321                                  5,050
                                                     ---------           ---------        -----------          ----------
Noninterest income:
  Service charges and fees                                 690                  21                                    711
  Gain on sale of loans                                    427                  32                                    459
  Gain on sale of investment securities                    (30)                                                       (30)
  Other                                                    140                  73                                    213
                                                     ---------           ---------        -----------          ----------
        Total noninterest income                         1,227                 126                                  1,353
                                                     ---------           ---------        -----------          ----------
Other expenses:
  Salaries and employee benefits                         2,091                 578                                  2,669
  Occupancy                                                308                  58                                    366
  Equipment                                                369                  87                                    456
  Other                                                  1,160                 422                                  1,582
                                                     ---------           ---------        -----------          ----------
        Total other expenses                             3,928               1,145                                  5,073
                                                     ---------           ---------        -----------          ----------
        Income before income taxes                       1,028                 302                                  1,330

Income taxes                                               377                 104                                    481
                                                     ---------           ---------        -----------          ----------
        Net income                                   $     651           $     198        $                    $      849
                                                     =========           =========        ===========          ==========
Basic earnings per share                             $    0.96           $    0.62        $                    $     0.79
                                                     =========           =========        ===========          ==========
Weighted average shares of common stock                681,030             319,572                              1,068,032(1)
                                                     =========           =========        ===========          ==========
Diluted earnings per share                           $    0.94           $    0.61        $                    $     0.78
                                                     =========           =========        ===========          ==========
Weighted average shares of common stock
 and common stock equivalents                          689,696             324,530                              1,082,702(1)
                                                     =========           =========        ===========          ==========
</TABLE>

- -----------

   
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Roseville before the combination multiplied by the
      Roseville conversion rate of 1.2110 to the weighted average shares for
      Western Sierra before the combination.
    


                                      111
<PAGE>   121
                           COMPARATIVE PER SHARE DATA
                                   (UNAUDITED)

   
The following table shows the selected historical financial information for
Western Sierra and Roseville and pro forma consolidated financial information in
the Western Sierra/Roseville merger. The table assumes that the Western
Sierra/Roseville merger was completed at the beginning of the periods presented,
and that each outstanding share of Roseville common stock is converted into
1.2110 shares of Western Sierra common stock. See "Description of the Western
Sierra/Roseville Merger--Roseville Conversion Rate and Exchange of Shares and
Options."
    

<TABLE>
<CAPTION>
                                           Nine Months
                                              Ended                           Year Ended
                                          September 30,                      December 31,
                                      --------------------        ----------------------------------
                                       1998          1997          1997          1996          1995
                                      ------        ------        ------        ------        ------
<S>                                   <C>           <C>           <C>           <C>           <C>
Amounts per common share:
 Western Sierra historical
   Net income(1)(2)                   $  .80        $  .70        $ 1.02        $  .94        $  .94
   Book value(3)                      $10.59        $ 9.15        $ 9.51        $ 9.69        $ 8.62
 Roseville historical
   Net income(1)(2)                   $  .72        $ 1.04        $  .56        $  .93        $  .61
   Book value(3)                      $12.69        $12.88        $12.39        $11.80        $10.85
 Pro forma amounts per
  common share of Western Sierra
   Net income(1)(4)                   $  .75        $  .75        $  .86        $  .88        $  .78
   Book value(5)                      $10.55        $ 9.59        $ 9.72        $ 9.71        $ 9.09
 Pro forma amounts per
  common share of Roseville
   Net income(1)(6)                   $  .91        $  .91        $ 1.04        $ 1.07        $  .94
   Book value(6)                      $12.78        $11.61        $11.77        $11.75        $10.60
</TABLE>

- ----------

(1)   All net income per share data are diluted per share data.

(2)   Diluted income per share calculations use the weighted average common
      stock and common stock equivalent shares outstanding for each period for
      Western Sierra and Roseville.

(3)   Book value per share is based on the actual number of shares outstanding
      at the end of the period.

   
(4)   Pro forma net income per share is determined in the same manner as
      footnote (2) above except the Roseville common shares are multiplied by
      the Roseville conversion rate of 1.2110.

(5)   Pro forma book value per share is determined in the same manner as
      footnote (3) above except the Roseville common shares are multiplied by
      the Roseville conversion rate of 1.2110.

(6)   Roseville pro forma equivalents are computed by multiplying the pro forma
      per share data of the consolidated entity by the Roseville conversion rate
      of 1.2110.
    


   
                                      112
    
<PAGE>   122

WESTERN SIERRA FOLLOWING THE WESTERN SIERRA/LAKE COMMUNITY MERGER AND THE
WESTERN SIERRA/ROSEVILLE MERGER

 The following pro forma financial information combines the historical financial
information of Western Sierra, Lake Community and Roseville to reflect what the
results might have been had all three institutions merged in each of the earlier
periods presented. The pro forma financial information does not take into
consideration operational efficiencies or additional expenses that might have
occurred as a result of combining the institutions. The following tables show
the pro forma consolidated condensed balance sheets of Western Sierra following
both the Western Sierra/Lake Community merger and the Western Sierra/Roseville
merger as of September 30, 1998 and December 31, 1997 and pro forma consolidated
condensed income statements of Western Sierra following both the Western
Sierra/Lake Community merger and the Western Sierra/Roseville merger for the
nine month periods ended September 30, 1998 and 1997 and the years ended
December 31, 1997, 1996 and 1995 (collectively referred to as the "Western
Sierra Pro Forma Financial Information.")

The Western Sierra Pro Forma Financial Information and related notes are based
on the historical financial statements of Western Sierra, Lake Community and
Roseville, giving effect to both the Western Sierra/Lake Community merger and
the Western Sierra/Roseville merger under the pooling of interests method of
accounting and the assumptions and adjustments in the accompanying notes to
Western Sierra Pro Forma Financial Information. The pro forma consolidated
condensed balance sheets assume both the Western Sierra/Lake Community merger
and the Western Sierra/Roseville merger were completed on September 30, 1998 and
December 31, 1997 and the pro forma consolidated condensed income statements
assume the Western Sierra/Lake Community merger and the Western Sierra/Roseville
merger were completed at the beginning of each period. Western Sierra Pro Forma
Financial Information further assumes the issuance of approximately 1,345,518
shares of Western Sierra common stock in exchange for all of the outstanding
shares of Lake Community common stock and Roseville common stock at September
30, 1998. The Western Sierra Pro Forma Financial Information is not necessarily
indicative of the financial position or results of operations of Western Sierra
following both the Western Sierra/Lake Community merger and the Western
Sierra/Roseville merger as it may be in the future or as it might have been had
both the Western Sierra/Lake Community merger and the Western Sierra/Roseville
merger been effected on the assumed dates.

   
Western Sierra Pro Forma Financial Information should be read in conjunction
with the historical financial statements of Western Sierra, Lake Community and
Roseville and the notes related thereto, presented elsewhere in this joint proxy
statement/prospectus. See "Index to Financial Statements."
    


   
                                      113
    
<PAGE>   123
WESTERN SIERRA PRO FORMA FINANCIAL INFORMATION BASED ON POOLING OF INTERESTS
METHOD OF ACCOUNTING

               EXISTING AND PRO FORMA CONSOLIDATED CAPITALIZATION
                                   (UNAUDITED)

The following table shows the existing capitalization of Western Sierra, Lake
Community and Roseville and the pro forma consolidated capitalization of Western
Sierra following both the Western Sierra/Lake Community merger and the Western
Sierra/Roseville merger at September 30, 1998 (dollars in thousands).

<TABLE>
<CAPTION>
                                                                                                               Pro Forma
                                                                                                              Consolidated
                                   Western               Lake                                                   Surviving
                                   Sierra              Community           Roseville      Adjustments(1)      Corporation(1)
                                 -----------          -----------          ----------     --------------      --------------
<S>                              <C>                  <C>                  <C>            <C>                 <C>
Shareholders' equity:
Common stock                     $     7,381          $     3,473          $    2,511                           $    13,365
Retained earnings                      2,744                5,795               2,174                                10,713
Net unrealized gains on
 available-for-sale
 securities                              268                  165                  19                                   452
                                 -----------          -----------          ----------     ------------          -----------
    Total shareholders'
     equity                      $    10,393          $     9,433          $    4,704                           $    24,530
                                 ===========          ===========          ==========     ============          ===========
Authorized shares of
 common stock                     10,000,000           20,000,000           5,000,000                            10,000,000
                                 ===========          ===========          ==========     ============          ===========
Outstanding shares                   981,448            1,298,296             370,805                             2,326,966
                                 ===========          ===========          ==========     ============          ===========
</TABLE>

- ----------

(1)   Assumes that holders of 100% of both Lake Community common stock and
      Roseville common stock convert their shares into Western Sierra common
      stock and that an aggregate of 1,345,518 shares of Western Sierra common
      stock are issued in the Western Sierra/Lake Community merger and the
      Western Sierra/Roseville merger.


   
                                      114
    
<PAGE>   124

                 UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET
                               SEPTEMBER 30, 1998


<TABLE>
<CAPTION>
                                                                                                                 Pro Forma
(Dollars in thousands)                           Western                             Lake        Pro Forma      Consolidated
                                                 Sierra          Roseville         Community    Adjustments     Balance Sheet
                                                ---------        ---------         ---------    -----------     -------------
<S>                                             <C>              <C>               <C>          <C>             <C>
ASSETS
Cash and due from banks                         $   6,941         $  4,252         $   4,558    $                 $  15,751
Federal funds sold                                 10,600           10,050             3,500                         24,150
Loans held for sale                                 2,786              305               620                          3,711
Interest-bearing deposits in banks                                                     4,554                          4,554
Investment securities:
  Available-for-sale                               30,544            4,218            12,041                         46,803
  Held-to-maturity                                  2,889                                                             2,889
                                                ---------         --------         ---------     -----------      ---------
        Total investments                          33,433            4,218            12,041                         49,692
                                                ---------         --------         ---------     -----------      ---------
Loans and leases:
  Commercial                                       18,708            6,694             4,449                         29,851
  Real estate                                      46,634           15,325            28,980                         90,939
  Real estate construction                          7,686            6,965             1,157                         15,808
  Lease financing                                   1,442                                                             1,442
  Agricultural                                                                        18,026                         18,206
  Consumer                                            583            2,184             2,530                          5,297
                                                ---------         --------         ---------     -----------      ---------
        Total loans                                75,053           31,168            55,142                        161,363
  Deferred fees and costs, net                       (209)             (76)             (204)                          (489)
  Allowance for loan and lease losses              (1,025)            (296)           (1,161)                        (2,482)
                                                ---------         --------         ---------     -----------      ---------
        Net loans                                  73,819           30,796            53,777                        158,392
                                                ---------         --------         ---------     -----------      ---------
Other real estate                                   1,553                                630                          2,183
Bank premises and equipment, net                    3,481            1,646             2,894                          8,021
Accrued interest receivable
 and other assets                                   2,668            2,104             2,467                          7,239
                                                ---------         --------         ---------     -----------      ---------
                                                $ 135,281         $ 53,371         $  85,041     $                $ 273,693
                                                =========         ========         =========     ===========      =========
LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits:
  Noninterest-bearing                           $  31,552         $ 10,880         $  12,765     $                $  55,197
  Interest-bearing                                 92,177           37,596            62,106                        191,879
                                                ---------         --------         ---------     -----------      ---------
        Total deposits                            123,729           48,476            74,871                        247,076

Accrued interest payable
 and other liabilities                              1,159              191               737                          2,087
                                                ---------         --------         ---------     -----------      ---------
        Total liabilities                         124,888           48,667            75,608                        249,163
                                                ---------         --------         ---------     -----------      ---------
Shareholders' equity:
  Common stock                                      7,381            2,511             3,473                         13,365
  Retained earnings                                 2,744            2,174             5,795                         10,713
  Unrealized gains on available-for-sale
     investment securities, net of taxes              268               19               165                            452
                                                ---------         --------         ---------     -----------      ---------
        Total shareholders' equity                 10,393            4,704             9,433                         24,530
                                                ---------         --------         ---------     -----------      ---------
                                                $ 135,281         $ 53,371         $  85,041     $                $ 273,693
                                                =========         ========         =========     ===========      =========
</TABLE>


   
                                      115
    
<PAGE>   125
                 UNAUDITED PRO FORMA CONSOLIDATED BALANCE SHEET
                                DECEMBER 31, 1997

<TABLE>
<CAPTION>
                                                                                                                   Pro Forma
(Dollars in thousands)                           Western                             Lake         Pro Forma       Consolidated
                                                 Sierra          Roseville         Community     Adjustments      Balance Sheet
                                                ---------        ---------         ---------     -----------      -------------
<S>                                             <C>              <C>               <C>           <C>              <C>
ASSETS
Cash and due from banks                         $   5,296         $  1,830         $   5,236     $                  $  12,362
Federal funds sold                                  6,550            6,720             4,000                           17,270
Loans held for sale                                 1,767              227               680                            2,674
Interest-bearing deposits in banks                                                     4,557                            4,557
Investment securities:
  Available-for-sale                               15,799            4,010            11,976                           31,785
  Held-to-maturity                                  4,950                                                               4,950
                                                ---------         --------         ---------     ------------       ---------
        Total investments                          20,749            4,010            11,976                           36,735
                                                ---------         --------         ---------     ------------       ---------

Loans and leases:
  Commercial                                       14,882            8,715             5,045                           28,642
  Real estate                                      40,052           16,279            32,003                           88,334
  Real estate construction                         13,263            7,319               435                           21,017
  Lease financing                                     698                                                                 698
  Agricultural                                                                        13,942                           13,942
  Consumer                                            615            2,623             2,919                            6,157
                                                ---------         --------         ---------     ------------       ---------
        Total loans                                69,510           34,936            54,344                          158,790
  Deferred fees and costs, net                       (371)             (86)             (182)                            (639)
  Allowance for loan and lease losses                (948)            (724)             (952)                          (2,624)
                                                ---------         --------         ---------     ------------       ---------
        Net loans                                  68,191           34,126            53,210                          155,527
                                                ---------         --------         ---------     ------------       ---------
Other real estate                                     967                                598                            1,565
Bank premises and equipment, net                    3,027            1,721             3,077                            7,825
Accrued interest receivable
 and other assets                                   2,313            1,954             2,186                            6,453
                                                ---------         --------         ---------     ------------       ---------
                                                $ 108,860         $ 50,588         $  85,520     $                  $ 244,968
                                                =========         ========         =========     ============       =========

LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits:
  Noninterest-bearing                           $  19,215         $  8,527         $  12,927     $                  $  40,669
  Interest-bearing                                 79,494           37,823            63,112                          180,429
                                                ---------         --------         ---------     ------------       ---------
        Total deposits                             98,709           46,350            76,039                          221,098

Accrued interest payable
 and other liabilities                              1,153              274               821                            2,248
                                                ---------         --------         ---------     ------------       ---------
        Total liabilities                          99,862           46,624            76,860                          223,346
                                                ---------         --------         ---------     ------------       ---------
Shareholders' equity:
  Common stock                                      7,001            2,021             3,178                           12,200
  Retained earnings                                 1,908            1,932             5,442                            9,282
  Unrealized gains on available-for-sale
     investment securities, net of taxes               89               11                40                              140
                                                ---------         --------         ---------     ------------       ---------
        Total shareholders' equity                  8,998            3,964             8,660                           21,622
                                                ---------         --------         ---------     ------------       ---------
                                                $ 108,860         $ 50,588         $  85,520     $                  $ 244,968
                                                =========         ========         =========     ============       =========
</TABLE>


   
                                      116
    
<PAGE>   126
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                                  For the Nine Months Ended September 30, 1998
                                                   ----------------------------------------------------------------------------
(Dollars in thousands)                              Western                            Lake                         Pro Forma
                                                    Sierra          Roseville        Community     Adjustments     Consolidated
                                                   ----------       ---------        ----------    -----------     ------------
<S>                                                <C>              <C>              <C>           <C>             <C>
Interest income
  Interest and fees on loans and leases            $    5,550        $  2,524        $    3,935    $                $   12,009
  Interest on deposits in banks                                                             223                            223
  Interest on investment securities                     1,134             174               497                          1,805
  Interest on federal funds sold                          320             292               184                            796
                                                   ----------        --------        ----------    -----------      ----------
        Total interest income                           7,004           2,990             4,839                         14,833

Interest expense on deposits                            2,601           1,303             1,916                          5,820
                                                   ----------        --------        ----------    -----------      ----------
        Net interest income                             4,403           1,687             2,923                          9,013

Provision for loan and lease losses                       250             105               270                            625
                                                   ----------        --------        ----------    -----------      ----------
        Net interest income after provision
          for loan and lease losses                     4,153           1,582             2,653                          8,388
                                                   ----------        --------        ----------    -----------      ----------
Noninterest income:
  Service charges and fees                                534              51               494                          1,079
  Gain on sale of loans                                 1,093             187                10                          1,290
  Other                                                   215             177                                              392
                                                   ----------        --------        ----------    -----------      ----------
        Total noninterest income                        1,842             415               504                          2,761
                                                   ----------        --------        ----------    -----------      ----------
Other expenses:
  Salaries and employee benefits                        2,621             705             1,416                          4,742
  Occupancy                                               324             105               213                            642
  Equipment                                               420              98               272                            790
  Other                                                 1,323             686               756                          2,765
                                                   ----------        --------        ----------    -----------      ----------
        Total other expenses                            4,688           1,594             2,657                          8,939
                                                   ----------        --------        ----------    -----------      ----------
        Income before income taxes                      1,307             403               500                          2,210

Income taxes                                              472             161               147                            780
                                                   ----------        --------        ----------    -----------      ----------
        Net income                                 $      835        $    242        $      353    $                $    1,430
                                                   ==========        ========        ==========    ===========      ==========
Basic earnings per share                           $     0.86        $   0.75        $     0.28    $                $     0.64
                                                   ==========        ========        ==========    ===========      ==========
Weighted average shares of common stock               970,810         320,158         1,265,387                      2,232,271(1)
                                                   ==========        ========        ==========    ===========      ==========
Diluted earnings per share                         $     0.80        $   0.72        $     0.27    $                $     0.61
                                                   ==========        ========        ==========    ===========      ==========
Weighted average shares of common stock
 and common stock equivalents                       1,038,285         333,661         1,329,428                      2,360,319(1)
                                                   ==========        ========        ==========    ===========      ==========
</TABLE>

- -----------

   
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Lake Community before the combination multiplied by the
      Lake Community conversion rate of .6905 and the weighted average shares
      for Roseville before the combination multiplied by the Roseville
      conversion rate of 1.2110 to the weighted average shares for Western
      Sierra before the combination at the beginning of all periods presented.
    


   
                                      117
    
<PAGE>   127
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                                  For the Nine Months Ended September 30, 1997
                                                      ----------------------------------------------------------------------
(Dollars in thousands)                                 Western                       Lake                        Pro Forma
                                                       Sierra       Roseville      Community     Adjustments    Consolidated
                                                      ----------    ---------      ----------    -----------    ------------
<S>                                                   <C>           <C>            <C>           <C>            <C>
Interest income
  Interest and fees on loans and leases               $    5,106    $   2,432      $    4,146    $               $   11,684
  Interest on deposits in banks                                                           165                           165
  Interest on investment securities                          912          202             434                         1,548
  Interest on federal funds sold                             150          210             123                           483
                                                      ----------    ---------      ----------    -----------     ----------
        Total interest income                              6,168        2,844           4,868                        13,880

Interest expense on deposits                               2,217        1,198           1,895                         5,310
                                                      ----------    ---------      ----------    -----------     ----------
        Net interest income                                3,951        1,646           2,973                         8,570

Provision for loan and lease losses                          193          126             270                           589
                                                      ----------    ---------      ----------    -----------     ----------
        Net interest income after provision
          for loan and lease losses                        3,758        1,520           2,703                         7,981
                                                      ----------    ---------      ----------    -----------     ----------
Noninterest income:
  Service charges and fees                                   557           41             389                           987
  Gain on sale of loans                                      562           57              17                           636
  Gain (loss) on sale of investment securities                16                           (8)                            8
  Other                                                      208          122              15                           345
                                                      ----------    ---------      ----------    -----------     ----------
        Total noninterest income                           1,343          220             413                         1,976
                                                      ----------    ---------      ----------    -----------     ----------
Other expenses:
  Salaries and employee benefits                           2,094          604           1,267                         3,965
  Occupancy                                                  296           79             204                           579
  Equipment                                                  337           69             257                           663
  Other                                                    1,213          423             680                         2,316
                                                      ----------    ---------      ----------    -----------     ----------
        Total other expenses                               3,940        1,175           2,408                         7,523
                                                      ----------    ---------      ----------    -----------     ----------
        Income before income taxes                         1,161          565             708                         2,434

Income taxes                                                 453          226             258                           937
                                                      ----------    ---------      ----------    -----------     ----------
        Net income                                    $      708    $     339      $      450    $               $    1,497
                                                      ==========    =========      ==========    ===========     ==========
Basic earnings per share                              $     0.73    $    1.06      $     0.36    $               $     0.68
                                                      ==========    =========      ==========    ===========     ==========
Weighted average shares of common stock                  965,403      319,972       1,240,546                     2,209,486(1)
                                                      ==========    =========      ==========    ===========     ==========
Diluted earnings per share                            $     0.70    $    1.04      $     0.35    $               $     0.66
                                                      ==========    =========      ==========    ===========     ==========
Weighted average shares of common stock
 and common stock equivalents                          1,009,311      324,648       1,276,729                     2,284,041(1)
                                                      ==========    =========      ==========    ===========     ==========
</TABLE>

- ----------

   
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Lake Community before the combination multiplied by the
      Lake Community conversion rate of .6905 and the weighted average shares
      for Roseville before the combination multiplied by the Roseville
      conversion rate of 1.2110 to the weighted average shares for Western
      Sierra before the combination at the beginning of all periods presented.
    


   
                                      118
    
<PAGE>   128
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                                      For the Year Ended December 31, 1997
                                                      ------------------------------------------------------------------------
(Dollars in thousands)                                Western                        Lake                          Pro Forma
                                                      Sierra       Roseville       Community      Adjustments     Consolidated
                                                      --------     ---------       ----------     -----------     ------------
<S>                                                   <C>          <C>             <C>            <C>             <C>
Interest income
  Interest and fees on loans and leases               $  6,978     $   3,287       $    5,529     $                $   15,794
  Interest on deposits in banks                                                           233                             233
  Interest on investment securities                      1,242           266              595                           2,103
  Interest on federal funds sold                           210           342              203                             755
                                                      --------     ---------       ----------     -----------      ----------
        Total interest income                            8,430         3,895            6,560                          18,885

Interest expense on deposits                             3,051         1,664            2,562                           7,277
                                                      --------     ---------       ----------     -----------      ----------

        Net interest income                              5,379         2,231            3,998                          11,608

Provision for loan and lease losses                        243           564              263                           1,070
                                                      --------     ---------       ----------     -----------      ----------
        Net interest income after provision
          for loan and lease losses                      5,136         1,667            3,735                          10,538
                                                      --------     ---------       ----------     -----------      ----------
Noninterest income:
  Service charges and fees                                 765            58              442                           1,265
  Gain on sale of loans                                    972            99               49                           1,120
  Gain (loss) on sale of investment securities              21                             (8)                             13
  Other                                                    279           184              147                             610
                                                      --------     ---------       ----------     -----------      ----------
        Total noninterest income                         2,037           341              630                           3,008
                                                      --------     ---------       ----------     -----------      ----------
Other expenses:
  Salaries and employee benefits                         2,988           818            1,617                           5,423
  Occupancy                                                400           148              214                             762
  Equipment                                                461            29              343                             833
  Other                                                  1,682           698            1,048                           3,428
                                                      --------     ---------       ----------     -----------      ----------
        Total other expenses                             5,531         1,693            3,222                          10,446
                                                      --------     ---------       ----------     -----------      ----------
        Income before income taxes                       1,642           315            1,143                           3,100

Income taxes                                               639           133              377                           1,149
                                                      --------     ---------       ----------     -----------      ----------
        Net income                                    $  1,003     $     182       $      766     $                $    1,951
                                                      ========     =========       ==========     ===========      ==========
Basic earnings per share                              $   1.08     $    0.57       $     0.62     $                $     0.90
                                                      ========     =========       ==========     ===========      ==========
Weighted average shares of common stock                932,531       319,972        1,240,546                       2,176,614(1)
                                                      ========     =========       ==========     ===========      ==========
Diluted earnings per share                            $   1.02     $    0.56       $     0.59     $                $     0.86
                                                      ========     =========       ==========     ===========      ==========
Weighted average shares of common stock
 and common stock equivalents                          986,706       324,648        1,297,954                       2,276,092(1)
                                                      ========     =========       ==========     ===========      ==========
</TABLE>

- ----------

   
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Lake Community before the combination multiplied by the
      Lake Community conversion rate of .6905 and the weighted average shares
      for Roseville before the combination multiplied by the Roseville
      conversion rate of 1.2110 to the weighted average shares for Western
      Sierra before the combination at the beginning of all periods presented.
    


   
                                      119
    
<PAGE>   129
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                                       For the Year Ended December 31, 1996
                                                      ---------------------------------------------------------------------------
(Dollars in thousands)                                Western                            Lake                         Pro Forma
                                                      Sierra         Roseville        Community     Adjustments      Consolidated
                                                      --------       ---------        ----------    -----------      ------------
<S>                                                   <C>            <C>              <C>           <C>              <C>
Interest income
  Interest and fees on loans and leases               $  5,544        $  2,545        $    5,704    $                 $   13,793
  Interest on deposits in banks                                                              198                             198
  Interest on investment securities                        751             232               777                           1,760
  Interest on federal funds sold                           146             251               168                             565
                                                      --------        --------        ----------    -----------       ----------
        Total interest income                            6,441           3,028             6,847                          16,316

Interest expense on deposits                             2,185           1,331             2,845                           6,361
                                                      --------        --------        ----------    -----------       ----------
        Net interest income                              4,256           1,697             4,002                           9,955

Provision for loan and lease losses                        458              89               477                           1,024
                                                      --------        --------        ----------    -----------       ----------
        Net interest income after provision
          for loan and lease losses                      3,798           1,608             3,525                           8,931
                                                      --------        --------        ----------    -----------       ----------
Noninterest income:
  Service charges and fees                                 688              33               415                           1,136
  Gain on sale of loans                                    684              58               146                             888
  Gain (loss) on sale of investment securities              11                                20                              31
  Other                                                    309             137                97                             543
                                                      --------        --------        ----------    -----------       ----------
        Total noninterest income                         1,692             228               678                           2,598
                                                      --------        --------        ----------    -----------       ----------
Other expenses:
  Salaries and employee benefits                         2,355             701             1,683                           4,739
  Occupancy                                                352              53               255                             660
  Equipment                                                399              97               342                             838
  Other                                                  1,176             479             1,244                           2,899
                                                      --------        --------        ----------    -----------       ----------
        Total other expenses                             4,282           1,330             3,524                           9,136
                                                      --------        --------        ----------    -----------       ----------
        Income before income taxes                       1,208             506               679                           2,393

Income taxes                                               470             204               203                             877
                                                      --------        --------        ----------    -----------       ----------
        Net income                                    $    738        $    302        $      476    $                 $    1,516
                                                      ========        ========        ==========    ===========       ==========
Basic earnings per share                              $   0.97        $   0.94        $     0.38    $                 $     0.76
                                                      ========        ========        ==========    ===========       ==========
Weighted average shares of common stock                759,017         319,872         1,240,491                       2,002,941(1)
                                                      ========        ========        ==========    ===========       ==========
Diluted earnings per share                            $   0.94        $   0.93        $     0.36    $                 $     0.73
                                                      ========        ========        ==========    ===========       ==========
Weighted average shares of common stock
 and common stock equivalents                          782,318         324,622         1,308,758                       2,079,133(1)
                                                      ========        ========        ==========    ===========       ==========
</TABLE>

- ----------

   
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Lake Community before the combination multiplied by the
      Lake Community conversion rate of .6905 and the weighted average shares
      for Roseville before the combination multiplied by the Roseville
      conversion rate of 1.2110 to the weighted average shares for Western
      Sierra before the combination at the beginning of all periods presented.
    


   
                                      120
    
<PAGE>   130
         UNAUDITED PRO FORMA CONSOLIDATED CONDENSED STATEMENT OF INCOME

<TABLE>
<CAPTION>
                                                                       For the Year Ended December 31, 1995
                                                      ---------------------------------------------------------------------------
(Dollars in thousands)                                 Western                            Lake                        Pro Forma
                                                       Sierra          Roseville        Community     Adjustments    Consolidated
                                                      ---------        ---------        ----------    -----------    ------------
<S>                                                   <C>              <C>             <C>            <C>            <C>
Interest income
  Interest and fees on loans and leases               $   4,938         $  2,164        $    5,794    $               $   12,896
  Interest on deposits in banks                                                                160                           160
  Interest on investment securities                         605              274               819                         1,698
  Interest on federal funds sold                            141              226               229                           596
                                                      ---------         --------        ----------    -----------     ----------
        Total interest income                             5,684            2,664             7,002                        15,350

Interest expense on deposits                              1,875            1,288             3,056                         6,219
                                                      ---------         --------        ----------    -----------     ----------
        Net interest income                               3,809            1,376             3,946                         9,131

Provision for loan and lease losses                          80               55               210                           345
                                                      ---------         --------        ----------    -----------     ----------
        Net interest income after provision
          for loan and lease losses                       3,729            1,321             3,736                         8,786
                                                      ---------         --------        ----------    -----------     ----------
Noninterest income:
  Service charges and fees                                  690               21               444                         1,155
  Gain on sale of loans                                     427               32               115                           574
  Gain (loss) on sale of investment securities              (30)                                40                            10
  Other                                                     140               73                82                           295
                                                      ---------         --------        ----------    -----------     ----------
        Total noninterest income                          1,227              126               681                         2,034
                                                      ---------         --------        ----------    -----------     ----------
Other expenses:
  Salaries and employee benefits                          2,091              578             1,689                         4,358
  Occupancy                                                 308               58               182                           548
  Equipment                                                 369               87               237                           693
  Other                                                   1,160              422             1,193                         2,775
                                                      ---------         --------        ----------    -----------     ----------
        Total other expenses                              3,928            1,145             3,301                         8,374
                                                      ---------         --------        ----------    -----------     ----------
        Income before income taxes                        1,028              302             1,116                         2,446

Income taxes                                                377              104               335                           816
                                                      ---------         --------        ----------    -----------     ----------
        Net income                                    $     651         $    198        $      781    $               $    1,630
                                                      =========         ========        ==========    ===========     ==========
Basic earnings per share                              $    0.96         $   0.62        $     0.63    $               $     0.85
                                                      =========         ========        ==========    ===========     ==========
Weighted average shares of common stock                 681,030          319,572         1,239,791                     1,924,107(1)
                                                      =========         ========        ==========    ===========     ==========

Diluted earnings per share                            $    0.94         $   0.61        $     0.59    $               $     0.82
                                                      =========         ========        ==========    ===========     ==========
Weighted average shares of common stock
 and common stock equivalents                           689,696          324,530         1,315,310                     1,990,923(1)
                                                      =========         ========        ==========    ===========     ==========
</TABLE>

- ----------

   
(1)   Weighted average shares of common stock and common stock equivalents for
      the pro forma consolidated entity was determined by adding the weighted
      average shares for Lake Community before the combination multiplied by the
      Lake Community conversion rate of .6905 and the weighted average shares
      for Roseville before the combination multiplied by the Roseville
      conversion rate of 1.2110 to the weighted average shares for Western
      Sierra before the combination at the beginning of all periods presented.
    


   
                                      121
    
<PAGE>   131
                           COMPARATIVE PER SHARE DATA
                                   (UNAUDITED)

   
The following table shows the selected historical financial information for
Western Sierra, Lake Community and Roseville and pro forma consolidated
financial information in both the Western Sierra/Lake Community merger and the
Western Sierra/Roseville merger. The table assumes that both the Western
Sierra/Lake Community merger and the Western Sierra/Roseville merger were
completed at the beginning of the periods presented, that each outstanding share
of Lake Community common stock is converted into .6905 shares of Western Sierra
common stock, and that each outstanding share of Roseville common stock is
converted into 1.2110 shares of Western Sierra common stock. See "Description of
the Western Sierra/Lake Community Merger--Lake Community Conversion Rate and
Exchange of Shares and Options" and "Description of the Western Sierra/Roseville
Merger--Roseville Conversion Rate and Exchange of Shares and Options."
    

<TABLE>
<CAPTION>
                                         Nine Months
                                            Ended                       Year Ended
                                         September 30,                 December 31,
                                      ------------------      ------------------------------
                                       1998        1997        1997        1996        1995
                                      ------      ------      ------      ------      ------
<S>                                   <C>         <C>         <C>         <C>         <C>
Amounts per common share:
 Western Sierra historical
   Net income(1)(2)                   $  .80      $  .70      $ 1.02      $  .94      $  .94
   Book value(3)                      $10.59      $ 9.15      $ 9.51      $ 9.69      $ 8.62
 Lake Community historical
   Net income(1)(2)                   $  .27      $  .35      $  .59      $  .36      $  .59
   Book value(3)                      $ 7.27      $ 6.98      $ 6.98      $ 6.57      $ 6.50
   Dividends declared                 $    0      $    0      $  .27      $  .20      $  .20
 Roseville historical
   Net income(1)(2)                   $  .72      $ 1.04      $  .56      $  .93      $  .61
   Book value(3)                      $12.69      $12.88      $12.39      $11.80      $10.85
 Pro forma amounts per
  common share of Western Sierra
   Net income(1)(4)                   $  .61      $  .66      $  .86      $  .73      $  .82
   Book value(5)                      $10.54      $ 9.79      $ 9.87      $ 9.62      $ 9.06
 Pro forma amounts per
  common share of Lake Community
   Net  income(1)(6)                  $  .42      $  .46      $  .59      $  .50      $  .57
   Book  value(6)                     $ 7.28      $ 6.76      $ 6.82      $ 6.65      $ 6.26
 Pro forma amounts per
  common share of Roseville
   Net  income(1)(6)                  $  .74      $  .80      $ 1.04      $  .88      $  .99
   Book  value(6)                     $12.77      $11.86      $11.96      $11.66      $10.98

</TABLE>

- ----------

(1)   All net income per share data are diluted per share data.

                  (Footnotes continued on the following page.)


   
                                      122
    
<PAGE>   132

(2)   Diluted income per share calculations use the weighted average common
      stock and common stock equivalent shares outstanding for each period for
      each entity.

(3)   Book value per share is based on the actual number of shares outstanding
      at the end of the period.

   
(4)   Pro forma net income per share is determined in the same manner as
      footnote (2) above except the Lake Community common shares are multiplied
      by the Lake Community conversion rate of .6905 and the Roseville common
      shares are multiplied by the Roseville conversion rate of 1.2110.

(5)   Pro forma book value per share is determined in the same manner as
      footnote (3) above except the Lake Community common shares are multiplied
      by the Lake Community conversion rate of .6905 and the Roseville common
      shares are multiplied by the Roseville conversion rate of 1.2110.

(6)   Lake Community pro forma equivalents are computed by multiplying the pro
      forma per share data of the combined entity by the Lake Community
      conversion Rate of .6905 and Roseville pro forma equivalents are computed
      by multiplying the pro forma per share data of the combined entity by the
      Roseville conversion rate of 1.2110.
    



                                      123
<PAGE>   133

   
                           Regulatory Capital Adequacy
    

The following table shows, as of September 30, 1998, the regulatory capital
ratios of Western Sierra, Lake Community and Roseville on a historical basis,
Western Sierra on a pro forma basis assuming completion of the Western
Sierra/Lake Community merger, Western Sierra on a pro forma basis assuming
completion of the Western Sierra/Roseville merger, Western Sierra on a pro forma
basis assuming completion of both the Western Sierra/Lake Community merger and
the Western Sierra/Roseville merger, and the minimum regulatory capital ratios.

<TABLE>
<CAPTION>
                                       Western       Lake
                            Minimum    Sierra      Community     Roseville
                            -------    -------     ---------     --------
<S>                         <C>        <C>         <C>           <C>
Leverage ratio                5.0%        8.5%        11.0%         9.3%
Tier 1 risk-based
 capital ratio                4.0%       11.2%        13.5%        11.7%
Total risk-based
 capital ratio                8.0%       12.4%        14.8%        12.4%
</TABLE>

<TABLE>
<CAPTION>
                                                        Western Sierra Following the
                                  Minimum            Western Sierra/Lake Community Merger
                                  -------            ------------------------------------
<S>                               <C>                <C>
Leverage ratio                      5.0%                             9.5%
Tier 1 risk-based
 capital ratio                      4.0%                            12.2%
Total risk-based
 capital ratio                      8.0%                            13.4%
</TABLE>


                                      124
<PAGE>   134
<TABLE>
<CAPTION>
                                                       Western Sierra Following the
                                   Minimum            Western Sierra/Roseville Merger
                                   -------            -------------------------------
<S>                                <C>                <C>
Leverage ratio                      5.0%                             8.7%
Tier 1 risk-based
 capital ratio                      4.0%                            11.3%
Total risk-based
 capital ratio                      8.0%                            12.4%
</TABLE>

<TABLE>
<CAPTION>
                                                       Western Sierra Following Both the
                                                      Western Sierra/Lake Community Merger
                                   Minimum           and the Western Sierra/Roseville Merger
                                   -------           ---------------------------------------
<S>                                <C>               <C>
Leverage ratio                      5.0%                             9.5%
Tier 1 risk-based
 capital ratio                      4.0%                            12.1%
Total risk-based
 capital ratio                      8.0%                            13.2%
</TABLE>


                                      125
<PAGE>   135

   
                          Description of Western Sierra
    


BUSINESS

GENERAL. Western Sierra was incorporated under the laws of the State of
California on July 11, 1996. Western Sierra was organized pursuant to a plan of
reorganization for the purpose of becoming the parent corporation of Western
Sierra National Bank, and on December 31, 1996, the reorganization was effected
and shares of Western Sierra Common Stock were issued to the shareholders of
Western Sierra National Bank for the common shares held by Western Sierra
National Bank's shareholders. Western Sierra is a registered bank holding
company under the Bank Holding Company Act of 1956. Western Sierra conducts its
operations at the head office of Western Sierra National Bank located at 4011
Plaza Goldorado Circle, Cameron Park, California 95682.

Western Sierra National Bank was organized under national banking laws and
commenced operations as a national bank on January 4, 1984. Western Sierra
National Bank is a member of the Federal Reserve System and its deposits are
insured to the maximum amount permitted by law by the FDIC. Western Sierra
National Bank's head office is located at 4011 Plaza Goldorado Circle, Cameron
Park, California and its branch offices are located at 2661 Sanders Drive,
Pollock Pines, 3970 J Missouri Flat Road, Placerville, 1450 Broadway,
Placerville, 3919 Park Drive, El Dorado Hills, and 571 5th Street, Lincoln.
Western Sierra National Bank does not have any affiliates or subsidiaries.
Western Sierra National Bank also has two loan production offices located at
3161 Cameron Park Drive, Suite 101, Cameron Park, and 1900 Point West Way, Suite
101, Sacramento.

BANKING SERVICES. Western Sierra is a locally owned and operated bank holding
company, and its primary service area is the Northern California communities of
Cameron Park, Pollock Pines, Placerville, El Dorado Hills and Lincoln. Western
Sierra also services the Sacramento community through its loan production
office. Western Sierra's primary business is servicing the banking needs of
these communities and its marketing strategy stresses its local ownership and
commitment to serve the banking needs of individuals living and working in
Western Sierra's primary service areas and local businesses, including retail,
professional and real estate-related activities in those service areas.

Western Sierra offers a broad range of services to individuals and businesses in
its primary service area with an emphasis upon efficiency and personalized
attention. Western Sierra provides a full line of consumer services and also
offers specialized services, such as courier services and appointment banking to
small businesses, middle market companies and professional firms. Western Sierra
National Bank offers personal and business checking and savings accounts
(including individual interest-bearing negotiable orders of withdrawal ("NOW"),
money market accounts and/or accounts combining checking and savings accounts
with automatic transfer), IRA accounts, time certificates of deposit and direct
deposit of social security, pension and payroll checks and computer cash
management with plans to institute PC Banking during 1998. Western Sierra
National Bank also makes available commercial, construction, accounts
receivable, inventory, automobile, home improvement, real estate, commercial
real estate, single family mortgage, Small Business Administration, office
equipment, leasehold improvement and installment loans (as well as overdraft
protection lines of credit), issues drafts and standby letters of credit, sells
travelers' checks (issued by an



   
                                       126
    

<PAGE>   136

independent entity), offers ATM's tied in with major statewide and national
networks, provides banking by appointment outside Western Sierra National Bank's
normal office hours, extends special considerations to senior citizens and
offers other customary commercial banking services.

Most of Western Sierra National Bank's deposits are obtained from commercial
businesses, professionals and individuals. At September 30, 1998, Western Sierra
National Bank had a total of 6,287 accounts consisting of demand deposit, NOW
and money market accounts with an average balance of approximately $7,705; 3,003
savings accounts with an average balance of approximately $2,370; time
certificates of $100,000 or more with an average balance of approximately
$253,286; and other time deposits with an average balance of approximately
$23,280. Western Sierra National Bank has not obtained any deposits through
deposit brokers and has no present intention of using brokered deposits. There
is no concentration of deposits or any customer with 5% or more of Western
Sierra National Bank's deposits other than one locally-owned title company which
holds 7.2% of Western Sierra National Bank's deposits and one director of
Western Sierra who holds 6.9% of Western Sierra National Bank's deposits.

Other special services and products include economy personal and business
checking products, computer cash management products and mortgage products and
services.

EMPLOYEES. At September 30, 1998, Western Sierra and its subsidiaries employed
92 persons on a full-time equivalent basis. Western Sierra believes its employee
relations are excellent.

PROPERTIES. Western Sierra and its subsidiary own the real property located at
4011 Plaza Goldorado Circle, Cameron Park, California. The building situated on
the property consists of 6,842 square feet and houses the executive and head
offices of Western Sierra and Western Sierra National Bank.

Western Sierra and its subsidiary also own the real property located at 3970 J
Missouri Flat Road, Placerville, California. The building situated on the
property consists of approximately 3,707 square feet and houses the West
Placerville branch office of Western Sierra National Bank.

On July 24, 1998, Western Sierra and its subsidiary purchased property in El
Dorado Hills for the purpose of building a stand-alone branch to be completed
during the first quarter of the year 2000. The property is located on El Dorado
Hills Boulevard.

Western Sierra is also in escrow for the purchase of additional property
adjacent to Western Sierra's and Western Sierra National Bank's executive and
head offices at 4011 Plaza Goldorado Circle for the purpose of expanding Western
Sierra's administration. Western Sierra's data processing department will be
moved from the existing Placerville branch located on Broadway which will be
downsized at that time, reducing the overhead fee for the Placerville Broadway
branch. The land acquisition will allow for future growth and expanded parking.
It is estimated that the first expansion to meet Western Sierra's immediate
needs will be completed in approximately twenty-four months. Western Sierra
expects escrow to close on the property in the near future.

Western Sierra and its subsidiary lease the premises of Western Sierra National
Bank's Placerville branch office located at 1450 Broadway, Placerville,
California. The lease is



   
                                       127
    

<PAGE>   137

presently for a term expiring June 30, 2002. The office space at this branch
consists of approximately 6,500 square feet.

Western Sierra and its subsidiary lease the premises of Western Sierra National
Bank's Pollock Pines branch office located at 2661 Sanders Drive, Pollock Pines,
California. The premises are leased for a term expiring on July 31, 2000. The
office space at this branch consists of approximately 1,520 square feet.

Western Sierra and its subsidiary lease the premises of Western Sierra National
Bank's El Dorado Hills branch office located at 3919 Park Drive, Suite 110, El
Dorado Hills, California. The premises are leased for a term expiring on July
31, 1999. The office space of this branch consists of approximately 1,800 square
feet.

Western Sierra and its subsidiary lease the premises of Western Sierra National
Bank's Lincoln branch office located at 571 5th Street, Lincoln, California. The
premises are leased for a term expiring on September 30, 2002. The office space
of this branch consists of approximately 5,500 square feet.

Western Sierra and its subsidiary lease the premises of Western Sierra National
Bank's Mortgage Division located at 3161 Cameron Park Drive, Suite 101, Cameron
Park, California. The premises are leased for a term expiring on March 31, 1999.
The office space at this site consists of approximately 1,353 square feet.

Western Sierra and its subsidiary lease the premises of Western Sierra National
Bank's Mortgage Division Branch at 1900 Point West Way, Suite 101, Sacramento,
California. The premises are leased for a term expiring on March 31, 2000. The
office space at this site consists of approximately 896 square feet.

LEGAL PROCEEDINGS. From time to time, Western Sierra and/or Western Sierra
National Bank is a party to claims and legal proceedings arising in the ordinary
course of business. Western Sierra's management is not aware of any material
pending litigation proceedings to which either it or Western Sierra National
Bank is a party or has recently been a party, which will have a material adverse
effect on the financial condition or results of operations of Western Sierra and
Western Sierra National Bank taken as a whole.

SUPERVISION AND REGULATION. Western Sierra is a bank holding company within the
meaning of the Bank Holding Company Act of 1956, as amended ("BHCA"), and is
registered as such with and is subject to the supervision of the FRB. Generally,
a bank holding company is required to obtain the approval of the FRB before it
may acquire all or substantially all of the assets of any bank, or ownership or
control of the voting shares of any bank if, after giving effect to such
acquisition of shares, the bank holding company would own or control more than
5% of the voting shares of such bank. The FRB's approval is also required for
the merger or consolidation of bank holding companies.

Western Sierra is required to file reports with the FRB and provide such
additional information as the FRB may require. The FRB also has the authority to
examine Western Sierra and each of its subsidiaries, as well as any arrangements
between Western Sierra and any of its subsidiaries, with the cost of any such
examination to be borne by Western Sierra.


   
                                       128
    

<PAGE>   138

Banking subsidiaries of bank holding companies are also subject to certain
restrictions imposed by federal law in dealings with their holding companies and
other affiliates. Subject to certain restrictions set forth in the Federal
Reserve Act, a bank can loan or extend credit to an affiliate, purchase or
invest in the securities of an affiliate, purchase assets from an affiliate, or
issue a guarantee, acceptance, or letter of credit on behalf of an affiliate;
provided that the aggregate amount of the above transactions of the bank and its
subsidiaries does not exceed 10 percent of the capital stock and surplus of the
bank on a per affiliate basis or 20 percent of the capital stock and surplus of
the bank on an aggregate affiliate basis. In addition, such transactions must be
on terms and conditions that are consistent with safe and sound banking
practices and, in particular, a bank and its subsidiaries generally may not
purchase from an affiliate a low-quality asset, as that term is defined in the
Federal Reserve Act. Such restrictions also prevent a bank holding company and
its other affiliates from borrowing from a banking subsidiary of the bank
holding company unless the loans are secured by marketable collateral of
designated amounts. Further, Western Sierra and its subsidiaries are prohibited
from engaging in certain tie-in arrangements in connection with any extension of
credit, sale or lease of property or furnishing of services.

A bank holding company is prohibited from itself engaging in or acquiring direct
or indirect ownership or control of more than 5% of the voting shares of any
company engaged in nonbanking activities. One of the principal exceptions to the
prohibition is for activities found by the FRB by order or regulation to be so
closely related to banking or managing or controlling banks as to be a proper
incident thereto. In making these determinations, the FRB considers whether the
performance of such activities by a bank holding company would offer advantages
to the public which outweigh possible adverse effects.

Federal Reserve Regulation "Y" sets out those activities which are regarded as
closely related to banking or managing or controlling banks, and thus, are
permissible activities that may be engaged in by bank holding companies subject
to approval in individual cases by the FRB. Most of these activities are now
permitted for national banks. There has been litigation challenging the validity
of certain activities authorized by the FRB for bank holding companies, and the
FRB has various regulations in this regard still under consideration. The future
scope of permitted activities is uncertain.

Western Sierra National Bank is subject to primary supervision, examination and
regulation by the Comptroller. The deposits of Western Sierra National Bank are
insured by the FDIC to applicable limits. Western Sierra National Bank is also
subject to applicable regulations of the FDIC and the FRB, and in addition the
provisions of California law, insofar as they are not preempted by federal
banking law. As a consequence of the extensive regulation of commercial banking
activities in California and the United States, Western Sierra National Bank's
business is particularly susceptible to changes in California and federal
legislation and regulations, which may have the effect of increasing the cost of
doing business, limiting permissible activities or increasing competition.

Various other requirements and restrictions under the laws of the United States
and the State of California affect the operations of Western Sierra National
Bank. Federal and California statutes and regulations relate to many aspects of
Western Sierra National Bank's operations, including reserves against deposits,
interest rates payable on deposits, loans, investments, mergers and
acquisitions, borrowings, dividends, branching, capital requirements and
disclosure obligations to depositors and borrowers. The Comptroller regulates
the number and locations of the branch



   
                                       129
    
<PAGE>   139

offices of a national bank, but may only permit a national bank to maintain
branches in locations and under the conditions imposed by state laws upon state
banks. California law presently permits a bank to locate a branch office in any
locality in the state. Additionally, California law exempts banks, including
national banks, from California usury laws.

SUMMARY OF EARNINGS

The following consolidated Summary of Earnings of Western Sierra and subsidiary
for the three years ended December 31, 1997 has been derived from financial
statements audited by Perry- Smith & Co., LLP, independent certified public
accountants, as described in their report included elsewhere in this joint proxy
statement/prospectus. The amounts shown for the nine months ended September 30,
1998 and 1997 are unaudited. The September 30, 1998 and 1997 amounts reflect, in
the opinion of management, all adjustments (consisting only of normal recurring
adjustments) necessary for a fair presentation of the results of operations for
such periods. These statements should be read in conjunction with the Financial
Statements and the Notes relating thereto which appear elsewhere herein.



   
                                       130
    

<PAGE>   140

<TABLE>
<CAPTION>
                                            Nine Months Ended
                                                September 30,                 Year Ended December 31,(1)
(Dollars in thousands,                   -------------------------     ----------------------------------------
 except per share data)                     1998           1997           1997           1996           1995
                                         ----------     ----------     ----------     ----------     ----------
                                                (unaudited)
<S>                                      <C>            <C>            <C>            <C>            <C>
Interest income                          $    7,004     $    6,168     $    8,430     $    6,441     $    5,684
Interest expense                              2,601          2,217          3,051          2,185          1,875
Net interest income                           4,403          3,951          5,379          4,256          3,809
Provision for loan and lease losses             250            193            243            458             80
Net interest income after
 provision for loan and lease losses          4,153          3,758          5,136          3,798          3,729
Other noninterest income                      1,842          1,343          2,037          1,692          1,227
Noninterest expense                           4,688          3,940          5,531          4,282          3,928
Earnings before income taxes                  1,307          1,161          1,642          1,208          1,028
Provision for income taxes(2)                   472            453            639            470            377
Net income                                      835            708          1,003            738            651
Basic earnings per share                 $      .86     $      .73     $     1.08     $      .97     $      .96
Number of shares used in basic
 earnings per share calculation(3)          970,810        965,403        932,531        759,017        681,030
Diluted earnings per share               $      .80     $      .70     $     1.02     $      .94     $      .94
Number of shares used in diluted
 earnings per share calculation(4)        1,038,285      1,009,311        986,706        782,318        689,696
</TABLE>

- ----------

(1)   See Notes to Financial Statements for a summary of significant accounting
      policies and other related data.

(2)   See Notes to Financial Statements for an explanation of income taxes.

(3)   Basic earnings per share information is based on the weighted average
      number of shares of common stock outstanding during each period.

(4)   Diluted earnings per share information is based on the weighted average
      number of shares of common stock and common stock equivalents outstanding
      during each period.

The following table sets forth selected ratios for the periods indicated:

<TABLE>
<CAPTION>
                              Nine Months Ended                Year Ended
(Unaudited)                     September 30,                  December 31,
                              ------------------      ------------------------------
                               1998        1997        1997        1996        1995
                              ------      ------      ------      ------      ------
<S>                           <C>         <C>         <C>         <C>         <C>
Net earnings to average
 shareholders' equity(1)        12.6%       11.6%       12.7%       12.2%       13.8%
Net earnings to
 average total assets(1)         1.0%        1.0%        1.0%        1.0%        1.0%
Total interest expense to
 total interest income          37.1%       36.0%       36.2%       33.9%       33.0%
Other operating income to
 other operating expense        39.3%       34.1%       36.8%       39.5%       31.2%
</TABLE>

- ----------

(1)   Ratios have been annualized for the nine months ended September 30, 1998
      and 1997.



   
                                       131
    

<PAGE>   141

WESTERN SIERRA'S MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

The following is Western Sierra's management's discussion and analysis of the
significant changes in income and expense accounts presented in the Summary of
Earnings for the years ended December 31, 1997, 1996 and 1995 and the nine
months ended September 30, 1998 and 1997.

INTRODUCTION. This discussion is designed to provide a better understanding of
significant trends related to Western Sierra's financial condition, results of
operations, liquidity, capital resources and interest rate sensitivity. It
should be read in conjunction with Western Sierra's audited financial statements
and unaudited interim financial statements and notes thereto and the other
financial information appearing elsewhere in this joint proxy
statement/prospectus.

NET INTEREST INCOME AND NET INTEREST MARGIN. Total interest income increased
from $5.68 million in 1995 to $6.44 million in 1996, and to $8.43 million in
1997, representing a 13.3% increase in 1996 over 1995 and a 30.9% increase in
1997 over 1996. Total interest income increased from $6.17 million for the nine
months ended September 30, 1997, to $7.00 million for the nine months ended
September 30, 1998, representing a 13.6% increase. The total interest income
increases in the periods discussed were primarily the result of the growth in
Western Sierra's loan and investment portfolios as a result of the acquisition
of the Lincoln branch of Wells Fargo Bank and growth in Western Sierra's
established market areas. Total interest expense increased from $1.88 million in
1995 to $2.19 million in 1996 and to $3.05 million in 1997, representing a 16.5%
increase in 1996 over 1995 and a 39.6% increase in 1997 over 1996. The increase
in interest expense in 1997 over 1996 was primarily the result of the assumption
of $6.44 million in deposits in connection with Western Sierra's acquisition of
the Lincoln branch of Wells Fargo Bank in February of 1997. Total interest
expense increased from $2.22 million for the nine months ended September 30,
1997, to $2.60 million for the nine months ended September 30, 1998,
representing a 17.3% increase.

Western Sierra's net interest margin (net interest income divided by average
earning assets) was 6.6% in 1995, 6.3% in 1996, and 6.0% in 1997. The net
interest margin for the nine months ended September 30, 1997 was 6.1% and for
the nine months ended September 30, 1998 was 5.6%. The primary reason for the
decrease in the net interest margin for the nine months ended September 30, 1998
from the nine months ended September 30, 1997 was the increased competition for
quality loans and the overall growth and change in mix in the loan and
investment portfolios, which decreased the yield on interest-earning assets. The
overall yield on the investment portfolio decreased from 7.25% in 1996 to 6.73%
in 1997 and to 6.00% for the nine months ended September 30, 1998. During the
same periods, the yield on the loan portfolio increased from 10.18% in 1996 to
10.25% in 1997, but decreased to 10.07% for the nine months ended September 30,
1998. In addition, while interest rates on deposits decreased, the overall mix
of deposits changed to include a greater percentage of higher yielding time
deposits, which increased the yield on interest-bearing liabilities. The growth
in deposits since 1997 resulted in the increase in interest expense for the nine
months ended September 30, 1998 over the same nine month period in 1997.



   
                                       132
    

<PAGE>   142

Western Sierra's net interest income increased from $3.81 million in 1995 to
$4.26 million in 1996 and to $5.38 million in 1997, representing an 11.7%
increase in 1996 over 1995 and a 26.4% increase in 1997 over 1996. The increases
in the periods discussed were primarily the result of the overall growth of
Western Sierra, with average interest-earning assets increasing 31.6% to $89.71
million in 1997 from $68.14 million in 1996 and 17.5% from $58.00 million in
1995. During these same periods, the net interest margin decreased to 6.00% in
1997 from 6.25% in 1996 and 6.57% in 1995. However, the increase in volume due
to Western Sierra's growth outweighed the decrease in the net interest margin
which resulted in the significant growth in net interest income discussed above.
Net interest income increased from $3.95 million for the nine months ended
September 30, 1997 to $4.40 million for the nine months ended September 30,
1998, representing an 11.4% increase. Average interest-earning assets increased
20.8% to $104.38 million for the nine months ended September 30, 1998 from
$86.42 million for the comparable period in 1997, with a decrease in the net
interest margin to 5.61% for the nine months ended September 30, 1998 from 6.08%
for the comparable period in 1997. The increase in net interest income for the
nine months ended September 30, 1998 over the nine months ended September 30,
1997 was primarily due to the reasons noted above.

The following table sets forth the changes in interest income and expense
attributable to changes in rates and volumes:

ANALYSIS OF CHANGES IN NET INTEREST INCOME.


<TABLE>
<CAPTION>
(Dollars in thousands)                                Year Ended December 31,
                                ---------------------------------------------------------------------
                                        1997 Versus 1996                     1996 Versus 1995
                                -------------------------------      --------------------------------
                                            Change       Change                   Change       Change
                                Total       Due to       Due to      Total        Due to       Due to
                                Change       Rate        Volume      Change        Rate        Volume
                                ------      ------       ------      ------       ------       ------
<S>                             <C>         <C>          <C>         <C>          <C>          <C>
Federal funds sold              $   65      $    2       $   63      $    4       $  (14)      $   18
Investment securities              489          32          457         146           65           81
Loans, gross                     1,435          38        1,397         607         (266)         873
                                ------      ------       ------      ------       ------       ------
      Total interest-
       earnings assets           1,989          72        1,917         757         (215)         972
                                ------      ------       ------      ------       ------       ------

NOW, MMDA                           27         (10)          37         (14)         (15)           1
Savings                              1           0            1         (30)         (16)         (14)
Certificates of deposit            838          31          807         354          (80)         434
                                ------      ------       ------      ------       ------       ------
      Total interest-
       bearing liabilities         866          21          845         310         (111)         421
                                ------      ------       ------      ------       ------       ------

Net interest income             $1,123      $   51       $1,072      $  447       $ (104)      $  551
                                ======      ======       ======      ======       ======       ======
</TABLE>



   
                                       133
    

<PAGE>   143

The change in interest income or interest expense that is attributable to both
changes in rate and changes in volume has been allocated to the change due to
rate and the change due to volume in proportion to the relationship of the
absolute amounts of changes in each.

The following is an unaudited summary of changes in earnings of Western Sierra
for the nine months ended September 30, 1998 and 1997 and for the years ended
December 31, 1997 and 1996. In the opinion of Western Sierra's management, the
following summary of changes in earnings reflects all adjustments which Western
Sierra considers necessary for a fair presentation of the results of its
operations for these periods. This summary of changes in earnings should be read
in conjunction with the Financial Statements and Notes relating thereto
appearing elsewhere herein.

<TABLE>
<CAPTION>
                                       Nine Months Ended                         Year Ended December 31,
                                         September 30,            ----------------------------------------------------
(Dollars in thousands)                  1998 over 1997                 1997 over 1996              1996 over 1995
                                     ----------------------       -----------------------      -----------------------
(Unaudited)                          Amount of       % of         Amount of      % of          Amount of        % of
                                      Change        Change         Change       Change(1)       Change       Change(1)
                                     ---------      -------       ---------     ---------      ---------     ---------
<S>                                  <C>            <C>           <C>           <C>            <C>           <C>
INTEREST INCOME
  Interest and fees on loans          $   444          8.70%       $ 1,434         25.87%       $   606         12.28%
  Interest on securities                  222         24.31%           490         65.25%           147         24.20%
  Interest on federal funds sold          170        113.25%            65         44.72%             4          3.06%
                                      -------                      -------                      -------
     Total interest income                836         13.55%         1,989         30.88%           757         13.32%

INTEREST EXPENSE
  Interest on deposits                    384         17.32%           866         39.63%           310         16.53%
                                      -------                      -------                      -------
     Net interest income                  452         11.43%         1,123         29.56%           447         11.74%

PROVISION FOR
  LOAN LOSSES                              57         29.53%          (214)       (46.72)%          378        472.50%
                                      -------                      -------                      -------
    Net interest income after
     provision for loan losses            395         10.50%         1,337         35.20%            69          1.85%
                                      -------                      -------                      -------

NONINTEREST INCOME
  Service charges                         (23)        (4.14)%           77         11.19%            (2)         (.27)%
  Other income                            522         66.36%           268         26.71%           467         86.86%
                                      -------                      -------                      -------
     Total noninterest income             499         37.12%           345         20.39%           465         37.90%
                                      -------                      -------                      -------

OTHER EXPENSES
  Salaries and related benefits           527         25.17%           632         26.84%           265         12.68%
  Occupancy and
   equipment expense                      111         17.54%           110         14.67%            73         10.84%
  Other                                   110          9.07%           506         43.03%            16          1.35%
                                      -------                      -------                      -------
     Total other expenses                 748         18.96%         1,248         29.15%           354          9.01%
                                      -------                      -------                      -------
     Income before income taxes           146         12.59%           434         35.93%           180         17.50%

PROVISION FOR
 INCOME TAXES                              19          4.09%           169         35.96%            93         24.67%
                                      -------                      -------                      -------

     NET INCOME                       $   127         18.02%       $   265         35.91%       $    87         13.36%
                                      =======                      =======                      =======
</TABLE>

- ----------

(1)   Increase or (decrease) over previous year amount.



   
                                       134
    

<PAGE>   144

NONINTEREST INCOME. Noninterest income increased from $1.28 million in 1995 to
$1.69 million in 1996 and to $2.04 million in 1997, representing a 37.9%
increase in 1996 over 1995 and a 20.4% increase in 1997 over 1996. Noninterest
income increased from $1.34 million for the nine months ended September 30, 1997
to $1.84 million for the nine months ended September 30, 1998, representing a
37.1% increase. The increases in noninterest income in 1996, 1997 and the first
nine months of 1998 were primarily the result of increased funding and sales of
mortgage loans in the mortgage department. Western Sierra expects mortgage
fundings and sales to continue to increase for the remainder of 1998.

OTHER EXPENSES. The continued growth of Western Sierra required additional staff
and overhead expense to support general and administrative services and
increased the cost of occupying Western Sierra's offices. Salaries were also
adjusted to be competitive with the industry and to reward performance. Other
expenses are comprised of salaries and related benefits, occupancy, equipment
and other expenses. Other expenses increased from $3.93 million in 1995 to $4.28
million in 1996, and to $5.53 million in 1997, representing a 9.0% increase in
1996 over 1995 and a 29.2% increase in 1997 over 1996. The increase in total
other expenses for the periods compared was due to the continued growth of
Western Sierra, to include the acquisition of the Lincoln branch of Wells Fargo
Bank in February of 1997.

The following table compares the various elements of other expenses as a
percentage of average assets for the years ended December 31, 1997, 1996 and
1995 and the nine months ended September 30, 1998 and 1997. (Dollars in
thousands except percentage amounts.)

<TABLE>
<CAPTION>
                                          Salaries           Occupancy            Other
                         Average         and Related        & Equipment          Operating
        Period           Assets(1)         Benefits           Expenses           Expenses
      ----------         --------        ------------       ------------        ----------
<S>                      <C>             <C>                <C>                 <C>
  Nine Months Ended
   September 30,(2)
      1998               $116,062               3.0%                .9%               1.5%
      1997               $ 96,917               2.9%                .9%               1.7%

    Year Ended
   December 31,
      1997               $ 99,453               3.0%                .9%               1.7%
      1996               $ 76,156               3.1%               1.0%               1.5%
      1995               $ 65,029               3.2%               1.0%               1.8%
</TABLE>

- ----------

(1)   Based on the average of daily balances.

(2)   Expense ratios are calculated on an annualized basis.

PROVISION FOR LOAN LOSSES. The provision for loan losses corresponds directly to
the level of the allowance that management deems sufficient to offset potential
loan losses. The balance in the loan loss allowance reflects the amount which,
in management's judgement, is adequate to provide for these potential loan
losses after weighing the mix of the loan portfolio, current economic
conditions, past loan experience and such other factors as deserve recognition
in estimating loan losses.



   
                                       135
    

<PAGE>   145

Management allocated $243 thousand as a provision for loan losses in 1997, $458
thousand in 1996 and $80 thousand in 1995. Loans charged off net of recoveries
in 1997 were $2 thousand, in 1996 were $399 thousand and in 1995 were $51
thousand. For the nine months ended September 30, 1998, $250 thousand was
allocated as a provision for loan losses and for the nine months ended September
30, 1997, $193 thousand was allocated as a provision for loan losses. Loans
charged off net of recoveries for the nine months ended September 30, 1998 were
$173 thousand. There were no loans charged-off for the nine months ended
September 30, 1997. The ratio of the allowance for loan losses to total gross
loans was 1.37% in 1997, 1.15% in 1996, and 1.30% in 1995, and for the interim
periods was 1.37% at September 30, 1998 and 1.27% at September 30, 1997.

In management's opinion, the balance of the allowance for loan losses at
September 30, 1998 was sufficient to sustain any foreseeable losses in the loan
portfolio at that time.

INCOME TAXES. Income taxes were $639 thousand in 1997, $470 thousand in 1996 and
$377 thousand in 1995. The income tax provision for the nine months ended
September 30, 1998 and 1997 was $472 thousand and $453 thousand, respectively.

NET INCOME. The net income and basic earnings per share of Western Sierra were
$1.00 million and $1.08 per share in 1997, $738 thousand and $.97 per share in
1996, and $651 thousand and $.96 per share in 1995, respectively. The net income
and basic earnings per share for the nine months ended September 30, 1998 were
$835 thousand and $.86 per share as compared to a net income of $708 thousand
and $.73 per share for the nine months ended September 30, 1997. The increase in
net income for the periods discussed was due to the increase in net interest
income resulting from the growth of Western Sierra and the increased gain on the
sale of mortgage loans.

LIQUIDITY. Western Sierra has an asset and liability management program allowing
it to maintain its interest margins during times of both rising and falling
interest rates and to maintain sufficient liquidity. Liquidity of Western Sierra
at December 31, 1997 was 20.4%, at December 31, 1996 was 10.8%, and at December
31, 1995 was 13.9% based on liquid assets (consisting of cash and due from
banks, investments not pledged, federal funds sold and loans available- for-
sale) divided by total liabilities. Western Sierra's management believes it
maintains adequate liquidity levels.

CAPITAL RESOURCES. The shareholders' equity accounts of Western Sierra increased
from $5.16 million at December 31, 1995, to $7.72 million at December 31, 1996
and to $9.00 million at December 31, 1997. These increases are attributable to
retained earnings and a $2.00 million stock offering of Western Sierra in 1996.
Western Sierra is subject to various regulatory capital requirements
administered by the federal banking agencies. Under capital adequacy guidelines
and the regulatory framework for prompt corrective action, Western Sierra must
meet specific capital guidelines that involve quantitative measures of Western
Sierra's assets, liabilities and certain off-balance sheet items as calculated
under regulatory accounting practices. Western Sierra's capital amounts and
classification are also subject to qualitative judgments by the regulators about
components, risk weightings and other factors.

Quantitative measures established by regulation to ensure capital adequacy
require Western Sierra to maintain minimum amounts and ratios of total and Tier
1 capital (primarily common stock and retained earnings less goodwill) to
risk-weighted assets, and of Tier 1 capital to



   
                                       136
    

<PAGE>   146

average assets. Management believes, as of September 30, 1998, that Western
Sierra exceeds all capital adequacy requirements to which it is subject.

As of June 30, 1998, the most recent notification from the FDIC categorized
Western Sierra as well capitalized under the regulatory framework for prompt
corrective action. To be categorized as well capitalized Western Sierra must
maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios
as set forth in the table below. There are no conditions or events since that
notification which management believes have changed Western Sierra's
categorization.

Western Sierra's actual capital ratios are presented below.

<TABLE>
<CAPTION>
                                                  Minimum
                                 Minimum            Well             Actual
                                 Capital         Capitalized      September 30,
                                Requirement      Requirement          1998
                               -------------    -------------     -------------
<S>                            <C>              <C>               <C>
Capital ratios:

  Tier 1 risk-based to
    risk-weighted assets               4%               6%            11.2%
  Total risk-based to
    risk-weighted assets               8%              10%            12.4%
   Leverage to total
    average assets                   4-5%               5%             8.5%
</TABLE>



   
                                       137
    

<PAGE>   147

SCHEDULE OF ASSETS, LIABILITIES AND SHAREHOLDERS' EQUITY. The following schedule
shows the unaudited average balances of Western Sierra's assets, liabilities and
shareholders' equity accounts and the percentage distribution of the items,
computed using the daily average balances, for the periods indicated.

<TABLE>
<CAPTION>
(Dollars in thousands)                                        Nine Months Ended
                                                                 September 30,
                                            -----------------------------------------------------
(Unaudited)                                          1998                         1997
                                            ------------------------     ------------------------
                                             Amount       Percent(1)      Amount       Percent(1)
                                            ---------     ----------     ---------     ----------
<S>                                         <C>           <C>            <C>           <C>
ASSETS
Cash and due from banks                     $   4,957          4.27%     $   4,355          4.49%
Investment securities                          23,900         20.59%        16,968         17.51%
Federal funds sold                              7,705          6.64%         3,594          3.71%
Loans:
  Commercial                                   16,879         14.54%        14,233         14.69%
  Installment                                     549          0.47%           562          0.58%
  Real estate                                  56,478         48.66%        52,059         53.72%
  Ag                                              147          0.13%           155          0.16%
Less deferred costs                              (274)        (0.24)%         (366)        (0.38)%
Less allowance for loan and lease losses         (955)        (0.82)%         (790)        (0.82)%
                                            ---------                    ---------
  Net loans                                    72,824         62.75%        65,853         67.95%
                                            ---------                    ---------
Bank premises and equipment, net                3,000          2.58%         2,825          2.91%
OREO                                            1,388          1.20%         1,393          1.44%
Other assets                                    2,288          1.97%         1,929          1.99%
                                            ---------                    ---------
       TOTAL ASSETS                         $ 116,062        100.00%     $  96,917        100.00%
                                            =========                    =========

LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits:
  Demand                                    $  23,578         20.32%     $  17,217         17.76%
  NOW and money market                         17,766         15.31%        17,610         18.17%
  Savings                                       7,120          6.13%         7,398          7.63%
  Time                                         37,410         32.23%        33,579         34.65%
  Time > $100,000                              20,373         17.55%        12,596         13.00%
                                            ---------                    ---------
Total deposits                                106,247         91.54%        88,400         91.21%
Other liabilities                                 972          0.84%           669          0.69%
                                            ---------                    ---------
    Total liabilities                         107,219         92.38%        89,069         91.90%
                                            ---------                    ---------
Shareholders' equity:
  Common stock                                  5,029          4.33%         5,029          5.19%
  Retained earnings                             3,747          3.23%         2,885          2.98%
  Unearned ESOP shares                                                         (26)        (0.03)%
  Unrealized gain
   (loss) on AFS
    investment
    securities, net                                67          0.06%           (40)        (0.04)%
                                            ---------                    ---------
    Total shareholders' equity                  8,843          7.62%         7,848          8.10%
                                            ---------                    ---------
TOTAL LIABILITIES AND
 SHAREHOLDERS' EQUITY                       $ 116,062        100.00%     $  96,917        100.00%
                                            =========                    =========
</TABLE>


<TABLE>
<CAPTION>
(Dollars in thousands)
                                                                         Year Ended December 31,
                                            ----------------------------------------------------------------------------------
(Unaudited)                                          1997                         1996                         1995
                                            ------------------------     ------------------------     ------------------------
                                              Amount      Percent(1)      Amount       Percent(1)       Amount      Percent(1)
                                            ---------     ----------     ---------     ----------     ---------     ----------
<S>                                         <C>           <C>            <C>           <C>            <C>           <C>
ASSETS
Cash and due from banks                     $   4,388          4.41%     $   3,810          5.00%     $   3,430          5.27%
Investment securities                          17,832         17.93%        11,019         14.47%         9,790         15.05%
Federal funds sold                              3,780          3.80%         2,671          3.51%         2,330          3.58%
Loans:
  Commercial                                   14,557         14.64%        13,426         17.63%        16,895         25.98%
  Installment                                     556          0.56%           672          0.88%           467          0.72%
  Real estate                                  53,354         53.64%        40,649         53.38%        28,735         44.19%
  Ag
Less deferred costs                              (371)        (0.37)%         (295)        (0.39)%         (219)        (0.34)%
Less allowance for loan and lease losses         (824)        (0.83)%         (683)        (0.90)%         (625)        (0.96)%
                                            ---------                    ---------                    ---------
  Net loans                                    67,272         67.64%        53,769         70.60%        45,253         69.59%
                                            ---------                    ---------                    ---------
Bank premises and equipment, net                2,820          2.84%         2,871          3.77%         2,513          3.87%
OREO                                            1,370          1.38%           633          0.83%           454          0.70%
Other assets                                    1,991          2.00%         1,383          1.82%         1,259          1.94%
                                            ---------                    ---------                    ---------
       TOTAL ASSETS                         $  99,453        100.00%     $  76,156        100.00%     $  65,029        100.00%
                                            =========                    =========                    =========

LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits:
  Demand                                    $  17,823         17.92%     $  13,293         17.45%     $  11,457         17.62%
  NOW and money market                         18,041         18.14%        15,906         20.88%        15,822         24.33%
  Savings                                       7,361          7.40%         7,294          9.58%         7,975         12.26%
  Time                                         34,417         34.61%        24,752         32.50%        18,656         28.69%
  Time > $100,000                              13,079         13.15%         7,714         10.13%         5,757          8.85%
                                            ---------                    ---------                    ---------
Total deposits                                 90,721         91.22%        68,959         90.54%        59,667         91.75%
Other liabilities                                 807          0.81%         1,146          1.53%           630          0.97%
                                            ---------                    ---------                    ---------
    Total liabilities                          91,528         92.03%        70,105         92.06%        60,297         92.72%
                                            ---------                    ---------                    ---------
Shareholders' equity:
  Common stock                                  5,029          5.06%         3,604          4.72%         2,745          4.23%
  Retained earnings                             2,911          2.93%         2,449          3.22%         1,993          3.06%
  Unearned ESOP shares                                                         (10)        (0.01)%
  Unrealized gain
   (loss) on AFS
    investment
    securities, net                               (15)        (0.02%)            8          0.01%            (6)        (0.01%)
                                            ---------                    ---------                    ---------
    Total shareholders' equity                  7,925          7.97%         6,051          7.94%         4,732          7.28%
                                            ---------                    ---------                    ---------
TOTAL LIABILITIES AND
 SHAREHOLDERS' EQUITY                       $  99,453        100.00%     $  76,156        100.00%     $  65,029        100.00%
                                            =========                    =========                    =========
</TABLE>

(1)   Percentages of categories under assets, liabilities and shareholders'
      equity are shown as percentages of average total assets.


   
                                       138
    
<PAGE>   148

INVESTMENT PORTFOLIO. The following table summarizes the amounts, terms,
distributions and yields of Western Sierra's investment securities as of
September 30, 1998, December 31, 1997 and December 31, 1996. (Dollars in
thousands)

<TABLE>
<CAPTION>
                            One Year           After One Year       After Five Years
                             or Less            to Five Years         to Ten Years         After Ten Years           Total
                        -----------------     -----------------     -----------------     -----------------     -----------------
September 30, 1998       Amount    Yield      Amount     Yield      Amount     Yield      Amount     Yield      Amount     Yield
- ------------------      -------   -------     -------   -------     -------   -------     -------   -------     -------   -------
<S>                     <C>       <C>         <C>       <C>         <C>       <C>         <C>       <C>         <C>       <C>
U.S. Treasury &
 Government agencies    $     0         0%    $   968      7.51%    $ 6,855      6.98%    $16,727      7.40%    $24,550      7.29%
Municipals                    0         0%        429      5.40%          0         0%      8,454      5.00%      8,883      5.00%
                        -------               -------               -------               -------               -------
       Total            $     0         0%    $ 1,397      6.86%    $ 6,855      6.98%    $25,181      6.60%    $33,433      6.68%
                        =======               =======               =======               =======               =======
</TABLE>

<TABLE>
<CAPTION>
                            One Year           After One Year       After Five Years
                             or Less            to Five Years         to Ten Years         After Ten Years           Total
                        -----------------     -----------------     -----------------     -----------------     -----------------
December 31, 1997        Amount    Yield      Amount     Yield      Amount     Yield      Amount     Yield      Amount     Yield
- -----------------       -------   -------     -------   -------     -------   -------     -------   -------     -------   -------
<S>                     <C>       <C>         <C>       <C>         <C>       <C>         <C>       <C>         <C>       <C>
U.S. Treasury &
 Government agencies    $   997      5.17%    $ 1,227      6.50%    $ 6,378      7.00%    $ 9,624      7.30%    $18,226      6.90%
Municipals                    0         0%        473      5.40%          0         0%      2,050      5.45%      2,523      5.43%
                        -------               -------               -------               -------               -------
       Total            $   997      5.17%    $ 1,700      6.10%    $ 6,378      7.00%    $11,674      6.93%    $20,749      6.73%
                        =======               =======               =======               =======               =======
</TABLE>

<TABLE>
<CAPTION>
                            One Year           After One Year       After Five Years
                             or Less            to Five Years         to Ten Years         After Ten Years           Total
                        -----------------     -----------------     -----------------     -----------------     -----------------
December 31, 1996        Amount    Yield      Amount     Yield      Amount     Yield      Amount     Yield      Amount     Yield
- -----------------       -------   -------     -------   -------     -------   -------     -------   -------     -------   -------
<S>                     <C>       <C>         <C>       <C>         <C>       <C>         <C>       <C>         <C>       <C>
U.S. Treasury &
 Government agencies    $   166      6.50%    $ 2,241      6.25%    $ 2,759      7.55%    $ 6,311      7.75%    $11,477      7.30%
Municipals                    0         0%        258      5.40%          0         0%          0         0%        258      5.40%
                        -------               -------               -------               -------               -------
       Total            $   166      6.50%    $ 2,499      6.15%    $ 2,759      7.55%    $ 6,311      7.75%    $11,735      7.25%
                        =======               =======               =======               =======               =======
</TABLE>



   
                                       139
    
<PAGE>   149

LOAN PORTFOLIO. Western Sierra's largest historical lending categories are real
estate loans, commercial loans and installment loans. These categories accounted
for approximately 78%, 21% and 1%, respectively, of Western Sierra's total loan
portfolio at December 31, 1996, approximately 78%, 21% and 1%, respectively, of
Western Sierra's total loan portfolio at December 31, 1997 and approximately
72%, 27% and 1%, respectively, at September 30, 1998. Loans are carried at face
amount, less payments collected and the allowance for possible loan losses.
Interest on all loans is accrued monthly on a simple interest basis. Typically,
once a loan is placed on nonaccrual status, Western Sierra reverses interest
accrued through the date of transfer. Loans are placed on nonaccrual status when
principal or interest on a loan is past due 90 days or more, unless the loan is
both well-secured and in the process of collection. Interest actually received
for loans on nonaccrual status is recognized as income at the time of receipt.
Problem loans are maintained on accrual status only when management of Western
Sierra is confident of full repayment within a reasonable period of time.

The rates of interest charged on variable rate loans are set at specified
increments in relation to Western Sierra's published lending rate and vary as
Western Sierra's lending rate varies. At December 31, 1996, approximately 71% of
Western Sierra's loan portfolio was comprised of variable interest rate loans,
at December 31, 1997, approximately 74% of Western Sierra's loan portfolio was
comprised of variable interest rate loans, and at September 30, 1998, variable
rate loans comprised approximately 60% of Western Sierra's loan portfolio.

DISTRIBUTION OF LOANS. The distribution of Western Sierra's total loans by type
of loan as of the dates indicated is shown in the following table (dollars in
thousands):

<TABLE>
<CAPTION>
                                 (Unaudited)
                                 September 30,                         December 31,
                           -----------------------       --------------------------------------
 Type of Loan                1998           1997           1997           1996           1995
- --------------             --------       --------       --------       --------       --------
<S>                        <C>            <C>            <C>            <C>            <C>
Real estate                $ 54,319       $ 55,031       $ 53,315       $ 47,284       $ 35,281
Commercial                   20,151         15,121         15,580         14,040         14,016
Installment                     583            585            615            657            849
                           --------       --------       --------       --------       --------
       TOTAL                 75,053         70,737         69,510         61,981         50,146

Less:
  Deferred loans fees          (209)          (392)          (371)          (372)          (252)
  Allowance for
    loan losses              (1,025)          (901)          (948)          (707)          (649)
                           --------       --------       --------       --------       --------

       TOTAL
        NET LOANS          $ 73,819       $ 69,444       $ 68,191       $ 60,902       $ 49,245
                           ========       ========       ========       ========       ========
</TABLE>

COMMERCIAL LOANS. Commercial loans are made for the purpose of providing working
funds, financing the purchase of equipment or inventory and for other business
purposes. Such loans include loans with maturities ranging from 30 to 360 days,
and "term loans", which are loans with maturities normally ranging from one to
five years. Short term business loans are generally used to finance current
transactions and typically provide for periodic interest payments, with
principal being payable at maturity or periodically. Term loans normally provide
for monthly payments of both principal and interest.



   
                                       140
    

<PAGE>   150

Western Sierra also extends lines of credit to business customers. On business
credit lines, Western Sierra specifies a maximum amount which it stands ready to
lend to the customer during a specified period in return for which the customer
agrees to maintain its primary banking relationship with Western Sierra. The
purpose for which such loans will be used and the security therefor, if any, are
generally determined before Western Sierra's commitment is extended. Normally,
Western Sierra does not make loan commitments in material amounts for periods in
excess of one year.

REAL ESTATE LOANS. Real estate loans are primarily made for the purpose of
purchasing, improving or constructing single family residences, and commercial
and industrial properties.

   
At September 30, 1998, approximately 58% of Western Sierra's real estate
construction loans consisted of loans secured by first trust deeds on the
construction of owner-occupied single family dwellings, and the remaining 42%
consisted of loans secured by first trust deeds on speculative single family
dwellings. Construction loans are generally written with terms of six to twelve
months and usually do not exceed a loan to appraised value ratio of 75 to 80%.
The risk associated with speculative construction lending includes the
borrower's inability to complete and sell the project, the borrower's incorrect
estimate of necessary construction funds and/or time for completion, and
economic changes, including depressed real estate values and increased interest
rates. Management has established underwriting criteria to minimize losses on
speculative construction loans by lending only to experienced developers with
proven track records. To date Western Sierra has not suffered any significant
losses through its speculative real estate construction loans. See also "Risk
Factors--Risks Related to Companies Business and Operations."
    

INSTALLMENT LOANS. Most installment loans are short-term loans, made for a
period of up to five years. Automobile loans are normally made with up to a
five-year amortization period.

MATURITY OF LOANS AND SENSITIVITY OF LOANS TO CHANGES IN INTEREST RATES. The
following table sets forth the amounts of loans outstanding of Western Sierra as
of September 30, 1998 and December 31, 1997 which, based on the remaining
scheduled repayments of principal, have the ability to be repriced or are due in
less than one year, in one to five years, or in more than five years. Management
has increased the fixed rate portion of Western Sierra's loan portfolio in 1998
in order to diversify its loan repricing options as part of its overall
asset/liability management program.

<TABLE>
<CAPTION>
(Dollars in              Less than      One Year to        After
thousands)                One Year       Five Years      Five Years        Total
                         ----------     ------------     ----------       --------
<S>                      <C>            <C>              <C>              <C>
September 30, 1998
- ------------------
Fixed rate                $ 11,133        $  7,894        $ 10,033        $ 29,060
Variable                    41,955           3,583             455          45,993
                          --------        --------        --------        --------

       Total              $ 53,088        $ 11,477        $ 10,488        $ 75,053
                          ========        ========        ========        ========
</TABLE>


   
                                       141
    

<PAGE>   151

<TABLE>
<CAPTION>
(Dollars in             Less than      One Year to        After
thousands)               One Year       Five Years      Five Years        Total
                        ----------     ------------     ----------       --------
<S>                     <C>            <C>              <C>              <C>
December 31, 1997
- -----------------
Fixed rate               $  8,579        $  5,018        $  4,133        $ 17,730
Variable                   46,219           5,066             495          51,780
                         --------        --------        --------        --------

       Total             $ 54,798        $ 10,084        $  4,628        $ 69,510
                         ========        ========        ========        ========
</TABLE>

LOAN COMMITMENTS. The following table shows Western Sierra's loan commitments at
the dates indicated:

<TABLE>
<CAPTION>
                                     September 30,                        December 31,
                                ----------------------        -------------------------------------
(Dollars in thousands)           1998           1997           1997           1996           1995
                                -------        -------        -------        -------        -------
<S>                             <C>            <C>            <C>            <C>            <C>
Commercial                      $ 8,608        $11,160        $ 6,827        $ 5,401        $ 3,287
Real estate                       9,696          5,506          8,440          7,690          4,915
                                -------        -------        -------        -------        -------
       Total commitments        $18,304        $16,666        $15,267        $13,091        $ 8,202
                                =======        =======        =======        =======        =======
</TABLE>

Based upon prior experience and prevailing economic conditions, it is
anticipated that approximately 40% of the commitments at September 30, 1998 will
be exercised during 1998.

SUMMARY OF LOAN LOSSES EXPERIENCE. As a natural corollary to Western Sierra's
lending activities, some loan losses are experienced. The risk of loss varies
with the type of loan being made and the creditworthiness of the borrower over
the term of the loan. To some extent, the degree of perceived risk is taken into
account in establishing the structure of, and interest rates and security for,
specific loans and for various types of loans. Western Sierra attempts to
minimize its credit risk exposure by use of thorough loan application and
approval procedures.

Western Sierra maintains a program of systematic review of its existing loans.
Loans are graded for their overall quality. Those loans which Western Sierra's
management determines require further monitoring and supervision are segregated
and reviewed on a periodic basis. Significant problem loans are reviewed on a
monthly basis by Western Sierra's Loan Committee. Loans for which it is probable
that Western Sierra will be unable to collect all amounts due (including
principal and interest) are considered to be impaired. The recorded investment
in impaired loans totaled $736 thousand and $1.49 million at September 30, 1998
and December 31, 1997, respectively. In addition, when principal or interest on
a loan is past due 90 days or more, such loan is placed on nonaccrual status
unless it is both well-secured and in the process of collection. Loans totaling
approximately $736 thousand and $1.49 million were on nonaccrual status as of
September 30, 1998 and December 31, 1997, respectively. Western Sierra
classifies certain loans on nonaccrual status as impaired. Accordingly, all
loans on nonaccrual status at September 30, 1998 and December 31, 1997 are
included with the impaired loans disclosed above.

Financial difficulties encountered by certain borrowers may cause Western Sierra
to restructure the terms of their loans to facilitate loan payments. As of
December 31, 1997 and 1996, Western Sierra had no troubled debt restructured
loans. Interest foregone on nonaccrual loans during the



   
                                       142
    

<PAGE>   152

nine months ended September 30, 1998 and the years ended December 31, 1997 and
1996 amounted to approximately $37 thousand, $96 thousand and $112 thousand,
respectively.

Western Sierra charges off that portion of any loan which management or bank
examiners consider to represent a loss. A loan is generally considered by
management to represent a loss in whole or in part when an exposure beyond any
collateral value is apparent, servicing of the unsecured portion has been
discontinued or collection is not anticipated based on the borrower's financial
condition and general economic conditions in the borrower's industry. The
principal amount of any loan which is declared a loss is charged against Western
Sierra's allowance for loan losses.

The following table sets forth the amount of loans on Western Sierra's books
which were 30 to 89 days past due at the dates indicated:

<TABLE>
<CAPTION>
                                            December 31,
                          September 30,   ----------------
(Dollars in thousands)        1998        1997        1996
                          -------------   ----        ----
<S>                       <C>             <C>         <C>
Commercial                    $  0        $289        $  6
Real estate                      0           0         158
                              ----        ----        ----
       Total                  $  0        $289        $164
                              ====        ====        ====
</TABLE>

The following table sets forth the amount of loans on Western Sierra's books
which were on nonaccrual status at the dates indicated:

<TABLE>
<CAPTION>
                                                December 31,
                           September 30,    --------------------
(Dollars in thousands)         1998          1997          1996
                           -------------    ------        ------
<S>                        <C>              <C>           <C>
Commercial                    $  298        $  428        $  500
Real estate                      439         1,059           929
                              ------        ------        ------
       Total                  $  737        $1,487        $1,429
                              ======        ======        ======
</TABLE>


   
                                       143
    

<PAGE>   153

The following table summarizes Western Sierra's loan loss experience for the
periods indicated:

<TABLE>
<CAPTION>
                                      Nine Months Ended
                                        September 30,                      Year Ended December 31,
                                   -----------------------         ---------------------------------------
(Dollars in thousands)               1998            1997            1997            1996            1995
                                   -------         -------         -------         -------         -------
                                         (Unaudited)
<S>                                <C>             <C>             <C>             <C>             <C>
BALANCES

Loans:
  Average loans                    $74,053         $67,009         $68,096         $54,452         $45,878
  Loans at end of period            75,053          71,322          69,139          61,609          49,894
Loans charged off                      187               0               3             403              56
Recoveries of loans
 previously charged off                 14               0               1               3               5
Net loans charged off                  173               0               2             400              51
Allowance for loan
 and lease losses                    1,025             901             948             707             649
Provisions for loan
 and lease losses                      250             193             243             458              80

Ratios(1):
Net loan charge-offs to
 average loans                        0.31%           0.00%           0.00%           0.73%           0.11%
Net loan charge-offs to
 loans at end of period               0.31%           0.00%           0.00%           0.65%           0.10%
Allowance for possible loan
 losses to average loans              1.38%           1.34%           1.39%           1.30%           1.41%
Allowance for possible
 loan losses to loans at
 end of period                        1.37%           1.26%           1.37%           1.15%           1.30%
Net loan charge-offs to
 allowance for possible
 loan losses                         22.50%           0.00%           0.21%          56.58%           7.86%
Net loan charge-offs to
 provision for possible
 loan losses                         69.20%           0.00%           0.82%          87.34%          63.75%

</TABLE>

- ----------
(1)   Annualized for the nine months ended September 30, 1998 and 1997.

Western Sierra's allowance for loan and lease losses is to provide for losses
which can be reasonably anticipated. The allowance for loan and lease losses is
established through charges to operating expenses in the form of provisions for
loan and lease losses. Provisions for loan and lease losses amounted to $243
thousand in 1997, $458 thousand in 1996 and $250 thousand for the first nine
months of 1998. The increased charge-offs and provision in 1996 reflect the
write-down of a loan secured by an apartment building in Southern California
which was acquired by Western Sierra in exchange for a problem loan. Other
increases reflect, in the opinion of management of Western Sierra, the growth of
the loan portfolio. Actual loan and lease losses or recoveries are charged or
credited, respectively, directly to the allowance for loan and lease



   
                                       144
    

<PAGE>   154

losses. The amount of the allowance is determined by management of Western
Sierra. Among the factors considered in determining the allowance for loan and
lease losses are the current financial condition of Western Sierra's borrowers
and the value of the security, if any, for their loans. Estimates of future
economic conditions and their impact on various industries and individual
borrowers are also taken into consideration, as are Western Sierra's historical
loan loss experience and reports of banking regulatory authorities. Because
these estimates and evaluations are primarily judgmental factors, no assurance
can be given that Western Sierra may not sustain loan and lease losses
substantially higher in relation to the size of the allowance for loan and lease
losses or that subsequent evaluation of the loan portfolio may not require
substantial changes in such allowance.

At December 31, 1997, 1996 and 1995, the allowance was 1.37%, 1.15%, and 1.30%,
of the loans then outstanding, respectively. At September 30, 1998, the
allowance was 1.37% of the loans then outstanding. Although the current level of
the allowance is deemed adequate by management, future provisions will be
subject to continuing reevaluation of risks in the loan portfolio.

   
Management of Western Sierra reviews with Western Sierra's Board of Directors
the adequacy of the allowance for loan and lease losses on a monthly basis and
adjusts the loan loss provision upward where specific items reflect a need for
such an adjustment. Management of Western Sierra charged off approximately $3
thousand in 1997, $403 thousand in 1996 and approximately $187 thousand in the
first nine months of 1998. Recoveries of loans previously charged off were $1
thousand in 1997, $3 thousand in 1996 and $14 thousand during the first nine
months of 1998. Charge-offs for 1998 are expected to consist mainly of two loans
for which the financial positions of the related borrowers changed
significantly. Management does not believe there has been any significant
deterioration in Western Sierra's loan portfolio. Management also believes that
Western Sierra has adequately reserved for all individual items in its portfolio
which may result in a loss material to Western Sierra. See "Description of
Western Sierra-- Western Sierra's Management's Discussion and Analysis of
Financial Condition and Results of Operations--Provision for Loan Losses".
    

INVESTMENT SECURITIES. Western Sierra has invested $33.43 million in federal
instruments, securities issued by states and political subdivisions and other
debt securities, which yielded approximately 6.08% per annum during the first
nine months of 1998. Western Sierra's present investment policy is to invest
excess funds in federal funds, U.S. Treasuries, securities issued by the U.S.
Government and securities issued by states and political subdivisions.

INTEREST RATES AND DIFFERENTIALS. Certain information concerning
interest-earning assets and interest-bearing liabilities and yields thereon
(unaudited) is set forth in the following table.
Amounts outstanding are daily average balances:



   
                                       145
    

<PAGE>   155

<TABLE>
<CAPTION>
                                            Nine Months Ended
(Dollars in thousands)                       September 30,(1)                Year Ended December 31,
                                          ----------------------      ------------------------------------
(Unaudited)                                 1998          1997          1997          1996          1995
                                          --------      --------      --------      --------      --------
<S>                                       <C>           <C>           <C>           <C>           <C>
Interest-earning assets:
  Federal funds sold:
       Average outstanding                $  7,705      $  3,594      $  3,780      $  2,671      $  2,330
       Average yield                          5.54%         5.56%         5.56%         5.47%         6.05%
       Interest income                    $    320      $    150      $    210      $    146      $    141
  Investment securities:
       Average outstanding                $ 23,900      $ 16,968      $ 17,832      $ 11,019      $  9,790
       Average yield                          6.33%         7.17%         6.97%         6.82%         6.18%
       Interest income                    $  1,134      $    912      $  1,242      $    751      $    605
  Loans:
       Average outstanding                $ 74,053      $ 67,009      $ 68,096      $ 54,452      $ 45,878
       Average yield                          9.99%        10.16%        10.25%        10.18%        10.76%
       Interest income                    $  5,550      $  5,106      $  6,978      $  5,544      $  4,938
  Total interest-earning assets:
       Average outstanding                $105,658      $ 87,371      $ 89,708      $ 68,142      $ 57,998
       Average yield                          8.84%         9.39%         9.40%         9.45%         9.80%
       Interest income                    $  7,004      $  6,168      $  8,430      $  6,441      $  5,684
Interest-bearing liabilities:
  NOW and money market
   demand accounts:
       Average outstanding                $ 17,766      $ 17,610      $ 18,041      $ 15,906      $ 15,822
       Average yield                          1.61%         1.76%         1.77%         1.84%         1.93%
       Interest expense                   $    215      $    232      $    320      $    292      $    306
  Savings deposits:
       Average outstanding                $  7,120      $  7,398      $  7,361      $  7,294      $  7,975
       Average yield                          1.97%         2.07%         2.06%         2.08%         2.28%
       Interest expense                   $    105      $    115      $    152      $    152      $    182
  Time deposits:
       Average outstanding                $ 57,783      $ 46,175      $ 47,495      $ 32,466      $ 24,413
       Average yield                          5.27%         5.40%         5.43%         5.33%         5.66%
       Interest expense                   $  2,282      $  1,870      $  2,579      $  1,730      $  1,381
  Other borrowings:
       Average outstanding                $      0      $      0      $      0      $      0      $      0
       Average yield                             0%            0%            0%            0%            0%
       Interest expense                   $      0      $      0      $      2      $     11      $      6
  Total interest-bearing liabilities:
       Average outstanding                $ 82,669      $ 71,183      $ 72,897      $ 55,666      $ 48,210
       Average yield                          4.20%         4.15%         4.18%         3.91%         3.88%
       Interest expense                   $  2,602      $  2,217      $  3,051      $  2,185      $  1,875
Net interest income                       $  4,402      $  3,951      $  5,379      $  4,256      $  3,809
  Average net yield on
   interest-earning assets                    5.56%         6.02%         6.00%         6.25%         6.57%
</TABLE>

- ----------

(1)   Nine month yields have been annualized.



   
                                       146
    

<PAGE>   156

LIQUIDITY MANAGEMENT. To augment short-term liquidity, Western Sierra National
Bank has unsecured short-term borrowing agreements with two of its correspondent
banks in the amounts of $2,000,000 each. Western Sierra National Bank can also
borrow up to $900,000 on an overnight basis from the FRB. In addition, Western
Sierra National Bank has the ability to borrow up to $880,000 on a short-term
basis from the Federal Home Loan Bank secured by investment securities with
amortized costs totaling $974,379 and estimated market values totaling $957,930.
Western Sierra National Bank can also borrow $6,445,000 from the Federal Home
Loan Bank secured by mortgage loans totaling $10,401,000. There were no
outstanding borrowings at December 31, 1997 or September 30, 1998.

Policies have been developed by Western Sierra's management and approved by
Western Sierra's Board of Directors which establish guidelines for the
investments and liquidity of Western Sierra. These policies include an
Investment Policy and an Asset Liability Policy. The goals of these policies are
to provide liquidity to meet the financial requirements of Western Sierra's
customers, maintain adequate reserves as required by regulatory agencies and
maximize earnings of Western Sierra.

The following table shows Western Sierra's average deposits for each of the
periods indicated below, based upon average daily balances:

<TABLE>
<CAPTION>
                                    Nine Months Ended                                          Year Ended
                                     September 30,                                             December 31,
                       -----------------------------------------    ----------------------------------------------------------------
                             1998                   1997                   1997                   1996                   1995
                       ------------------     ------------------    -------------------    -------------------    ------------------
(Dollars in thousands) Average   Percent      Average   Percent     Average    Percent     Average    Percent     Average   Percent
(Unaudited)            Balance   of Total     Balance   of Total    Balance    of Total    Balance    of Total    Balance   of Total
                       -------   --------     -------   --------    -------    --------    -------    --------    -------   --------
<S>                    <C>       <C>         <C>        <C>         <C>        <C>         <C>        <C>         <C>       <C>
Demand deposits        $ 23,578    22.19%    $ 17,217     19.48%    $ 17,823     19.65%    $ 13,293     19.27%    $ 11,457    19.20%
NOW accounts             10,133     9.54%       9,580     10.84%       9,616     10.60%       8,371     12.14%       7,924    13.27%
Savings deposits          7,633     7.18%       8,030      9.08%       7,361      8.11%       7,294     10.58%       7,975    13.37%
Money market
 deposits                 7,120     6.70%       7,398      8.37%       8,425      9.29%       7,535     10.93%       7,898    13.24%
Time deposits            57,783    54.39%      46,175     52.23%      47,496     52.35%      32,466     47.08%      24,413    40.92%
                       --------              --------               --------               --------               --------
    Total deposits     $106,247   100.00%    $ 88,400    100.00%    $ 90,721    100.00%    $ 68,959    100.00%    $ 59,667   100.00%
                       ========              ========               ========               ========               ========
</TABLE>

LIABILITY MANAGEMENT. It is management's policy to restrict the maturities of a
majority of its certificates of deposit in denominations of $100,000 or more to
less than one year. The maturities of such time certificates of deposit
("TCD's"), as well as other time deposits, were as follows:

<TABLE>
<CAPTION>
                                 September 30, 1998              December 31, 1997
                              ------------------------        ------------------------
                                TCD's           Other           TCD's           Other
(Dollars in thousands)          over            Time            over            Time
(Unaudited)                   $100,000        Deposits        $100,000        Deposits
                              --------        --------        --------        --------
<S>                           <C>             <C>             <C>             <C>
Less than three months        $ 22,786        $ 15,375        $  8,219        $ 16,056
Over three months
 through twelve months           5,822          18,699           6,286          16,664
Over twelve months
 through five years              1,144           3,239           1,028           3,677
Over five years                      0              62               0             100
                              --------        --------        --------        --------
       Total                  $ 29,752        $ 37,375        $ 15,533        $ 36,497
                              ========        ========        ========        ========
</TABLE>


   
                                       147
    

<PAGE>   157

Time deposits in denominations in excess of $100,000, with maturities of less
than three months, increased by over $14 million at September 30, 1998. A
director of Western Sierra accounted for approximately $8 million of this
increase. This shift in the mix of time deposits to shorter maturities reduced
the effective yield of overall time deposits for the nine months ending
September 30, 1998. These additional funds were invested in securities with
similar anticipated maturity dates. It is anticipated that approximately one
half of the approximately $8 million in time deposits discussed above will be
withdrawn from Western Sierra in the second quarter of 1999.

While the deposits of Western Sierra may fluctuate up and down somewhat with
local and national economic conditions, management of Western Sierra does not
believe that such deposits, or the business of Western Sierra in general, are
seasonal in nature. Liability management is monitored by Western Sierra's Board
of Directors which meets monthly.

REGULATORY MATTERS.

Capital Adequacy. The capital adequacy of banking institutions has become
increasingly important in recent years. The deregulation of the banking industry
during the 1980's has resulted in, among other things, a broadening of business
activities beyond that of traditional banking products and services. Because of
this volatility within the banking industry, regulatory agencies have increased
their focus upon ensuring that banking institutions meet certain capital
requirements as a means of protecting depositors and investors against such
volatility.

The Comptroller has adopted regulations requiring insured institutions to
maintain a minimum leverage ratio of Tier 1 capital (the sum of common
shareholders' equity, noncumulative perpetual preferred stock and minority
interests in consolidated subsidiaries, minus intangible assets, identified
losses and investments in certain subsidiaries) to total assets. Institutions
which have received the highest composite regulatory rating and which are not
experiencing or anticipating significant growth are required to maintain a
minimum leverage capital ratio of 3% Tier 1 capital to total assets. All other
institutions are required to maintain a minimum leverage capital ratio of at
least 100 to 200 basis points above the 3% minimum requirement.

The Comptroller has also adopted a statement of policy, supplementing its
leverage capital ratio requirements, which provided definitions of qualifying
total capital (consisting of Tier 1 capital and supplementary capital, including
the allowance for loan losses up to a maximum of 1.25% of risk-weighted assets)
and sets forth minimum risk-based capital ratios. Insured institutions are
required to maintain a ratio of qualifying total capital to risk-weighted assets
of 8%, at least one-half (4%) of which must be in the form of Tier 1 capital.



   
                                       148
    

<PAGE>   158

The following table sets forth Western Sierra's capital positions at September
30, 1998 and December 31, 1997 under the regulatory guidelines discussed above:

<TABLE>
<CAPTION>
                            September 30, 1998      December 31, 1997
                          Actual Capital Ratios    Actual Capital Ratios    Minimum
                          ---------------------    ---------------------    -------
<S>                       <C>                      <C>                      <C>
Capital Ratios
- --------------
Total risk-based
 capital ratio                      12.4%                 11.9%                8.0%
Tier 1 capital to
 risk-weighted assets               11.2%                 10.7%                4.0%
Leverage ratio                       8.5%                  8.7%                3.0%
</TABLE>

As is indicated by the above table, Western Sierra exceeded all applicable
regulatory capital guidelines at September 30, 1998 and December 31, 1997.
Western Sierra's management believes that, under the current regulations,
Western Sierra will continue to meet its minimum capital requirements in the
foreseeable future.

Dividends. Western Sierra National Bank as a national bank is subject to
dividend restrictions set forth by the Comptroller. Under such restrictions,
Western Sierra National Bank may not, without the prior approval of the
Comptroller, declare dividends in excess of the sum of the current year's
earnings (as defined) plus the retained earnings (as defined) from the prior two
years, provided that Western Sierra National Bank's surplus fund is a least
equal to its common capital. If the capital surplus falls below the balance of
the common capital account, then further restrictions apply. This is not the
case with Western Sierra National Bank. Year-to-date dividends of $400,000 paid
through September 30, 1998, were well within the approximate maximum allowed
under those regulatory guidelines, without approval of the Comptroller.

Reserve Balances. Western Sierra National Bank is required to maintain average
reserve balances with the FRB. At September 30, 1998 and December 31, 1997,
Western Sierra National Bank's qualifying balance with the FRB was approximately
$2.42 million and $548 thousand, respectively, consisting of vault cash and
balances.

   
Year 2000 Compliance. The "Year 2000 issue" relates to the fact that many
computer programs use only two digits to represent a year, such as "98" to
represent "1998," which means that in the Year 2000 such programs could
incorrectly treat the Year 2000 as the year 1900. This issue has grown in
importance as the use of computers and microchips has become more pervasive
throughout the economy, and interdependencies between systems have multiplied.
The issue must be recognized as a business problem, rather than simply a
computer problem, because of the way its effects could ripple through the
economy. Western Sierra could be materially and adversely affected either
directly or indirectly by the Year 2000 issue. This could happen if any of its
critical computer systems or equipment containing preprogrammed computer chips
fail, if the local infrastructure (electric power, phone system, or water
system) fails, if its significant vendors are adversely impacted, or if its
borrowers or depositors are adversely impacted by their internal systems or
those of their customers or suppliers. Failure of Western Sierra to complete
testing and renovation of its critical systems on a timely basis could have a
material adverse effect on Western Sierra's financial condition and results of
operations, as could Year 2000 problems faced by others with whom Western Sierra
does business.
    



   
                                       149
    

<PAGE>   159

Federal banking regulators have responsibility for supervision and examination
of banks to determine whether each institution has an effective plan for
identifying, renovating, testing and implementing solutions for Year 2000
processing and coordinating Year 2000 processing capabilities with its
customers, vendors and payment system partners. Bank examiners are also required
to assess the soundness of a bank's internal controls and to identify whether
further corrective action may be necessary to assure an appropriate level of
attention to Year 2000 processing capabilities.

   
Western Sierra has a written plan to address Western Sierra's risks associated
with the impact of the Year 2000. The plan directs Western Sierra's Year 2000
compliance efforts under the framework of a five-step program mandated by the
Federal Financial Institutions Examination Council ("FFIEC"). The FFIEC'S
five-step program consists of five phases: awareness, assessment, renovation,
validation and implementation. In the awareness phase, which Western Sierra has
completed, the Year 2000 problem is defined and executive level support for the
necessary resources to prepare Western Sierra for Year 2000 compliance is
obtained. In the assessment phase, which Western Sierra has also completed, the
size and complexity of the problem and details of the effort necessary to
address the Year 2000 issues are assessed. Although the awareness and assessment
phases are completed, Western Sierra continues to evaluate new issues as they
arise. In the renovation phase, which Western Sierra has substantially
completed, the required incremental changes to hardware and software components
are tested. In the validation phase, which Western Sierra has also substantially
completed, the hardware and software components are tested. In the 
implementation phase changes to hardware and components are brought on line. 
The implementation phase is 80% completed.
    

Western Sierra is utilizing both internal and external resources to identify,
correct or reprogram, and test its systems for Year 2000 compliance. Western
Sierra has identified 57 vendors and 52 software applications which management
believes are material to its operations. Based on information received from its
vendors and testing results, Western Sierra believes approximately 86% of such
vendors are Year 2000 compliant as of December 31, 1998. Testing of the critical
system applications for the core banking product provided by Western Sierra's
primary vendor was completed and the results were inconclusive because the
software version mismatched for testing purposes with the Year 2000 upgrade. It
was retested in January, 1999 with success. The verification was completed by
February 5, 1999. The core banking product includes software solutions for
general ledger, accounts payable, automated clearing house, certificates of
deposit and individual retirement accounts, commercial, mortgage and installment
loans, checking and savings accounts, proof of deposit applications and
ancillary support products.

   
Western Sierra has identified 20 vendors which Western Sierra does not believe
are fully Year 2000 compliant as of December 31, 1998. Of the 20 vendors, 10 are
material to Western Sierra's operations. All 10 have Year 2000 plans in place
and are 50-80% completed. On March 31, 1999, Western Sierra will make a decision
if an alternate is required. Each of these vendors has advised Western Sierra
that it has completed the evaluation and renovation stages of Year 2000
compliance and is scheduled to begin implementation and validation in January
1999 and to complete the final validation phase by June 30, 1999.
    

   
Western Sierra is also making efforts to ensure that its customers, particularly
its significant customers, are aware of the Year 2000 problem. Western Sierra
has sent Year 2000 
    

   
                                       150
    

<PAGE>   160
   
correspondence to its significant deposit and loan customers. A customer of
Western Sierra is deemed significant if the customer possesses any of the
following characteristics:

- -      Total indebtedness to Western Sierra National Bank of $250,000 or more.
    

- -      The customer's business is dependent on the use of high technology and/or
       the electronic exchange of information.

- -      The customer's business is dependent on third party providers of data
       processing services or products.

- -      An average ledger deposit balance greater than $250,000.

- -      Collateral taken by Western Sierra National Bank which could become
       impaired by Year 2000 problems.

- -      Unsecured lines of credit which borrowers can draw funds at will.

   
Western Sierra has amended its credit authorization documentation to include
consideration of the Year 2000 problem. Western Sierra assesses its significant
customer's Year 2000 readiness and assigns the customer an assessment of "low,"
"medium" or "high" risk. Risk evaluation of Western Sierra's significant
customers was completed by December 31, 1998. Any depositor or lending customer
determined to have a high or medium risk is scheduled for an evaluation by
Western Sierra every 90 days until the customer can be assigned a low risk
assessment. Six loans totaling $470,546 are considered high risk and are
monitored closely for progress. All deposit customers are either low risk or
compliant with the exception of the six loan customers noted above.
    

Because of the range of possible issues and large number of variables involved,
it is impossible to quantify the total potential cost of Year 2000 problems or
to determine Western Sierra's worst-case scenario in the event Western Sierra's
Year 2000 remediation efforts or the efforts of those with whom it does business
are not successful. In order to deal with the uncertainty associated with the
Year 2000 problem, Western Sierra is developing a contingency plan to address
the possibility that efforts to mitigate the Year 2000 risk are not successful
either in whole or part. These plans include manual processing of information
for critical information technology systems and increased cash on hand. The
contingency plans are expected to be completed by March 31, 1999, after which
the appropriate implementation training is scheduled to take place.

As of December 31, 1998, Western Sierra has incurred $103,386 in Year 2000
costs, which have been expensed as incurred. Year 2000-related costs have been
funded from the continuing operations of Western Sierra and, as of December 31,
1998, have constituted approximately 43% of Western Sierra's information systems
budget for 1998. Western Sierra estimates that its costs to complete Year 2000
compliance will be approximately $258,795. This estimate includes the cost of
purchasing hardware and licenses for software programming tools, the cost of the
time of internal staff and the cost of consultants. The estimate does not
include the time that internal staff are devoting to testing programming
changes. Testing is not expected to add significant incremental costs.

   
    



   
                                       151
    

<PAGE>   161
   
Quantitative and Qualitative Disclosures About Market Risk. Market risk is the
risk of loss from adverse changes in market prices and rates. Western Sierra's
market risk arises primarily from interest rate risk inherent in its loan and
deposit functions and management actively monitors and manages this interest
rate risk exposure. Western Sierra does not have any market risk sensitive
instruments entered into for trading purposes. Management uses several different
tools to monitor its interest rate risk. One measure of exposure to interest
rate risk is gap analysis. A positive gap for a given period means that the
amount of interest-earning assets maturing or otherwise repricing within such
period is greater than the amount of interest-bearing liabilities maturing or
otherwise repricing within the same period. Western Sierra has a positive gap.
In addition, Western Sierra uses interest rate shock simulations to estimate the
effect of certain hypothetical rate changes. Based upon Western Sierra's shock
simulations, net interest income is expected to rise with increasing rates and
fall with declining rates.
    

Western Sierra's positive gap is the result of the majority of Western Sierra's
investments having terms greater than five years on the asset side. On the
liability side, the majority of Western Sierra's time deposits have average
terms of approximately six months while savings accounts and other
interest-bearing transaction accounts are recorded for gap analysis in the next
day to three month category because they do not have a contractual maturity
date.

Taking into consideration that savings accounts and other interest-bearing
transaction accounts typically do not react immediately to changes in interest
rates, management has taken the following steps to manage its positive gap
position. Western Sierra has added loans tied to indices which change at a
slower rate than prime and more closely match Western Sierra's liabilities. In
addition, Western Sierra holds the majority of its investments in the
available-for-sale category in order to be able to react to changes in interest
rates.

The following table sets forth the distribution of repricing opportunities of
Western Sierra's interest-earning assets and interest-bearing liabilities, the
interest rate sensitivity gap (i.e. interest rate sensitive assets less interest
rate sensitive liabilities), the cumulative interest rate sensitivity gap and
the cumulative gap as a percentage of total interest-earning assets as of
December 31, 1997. The table also sets forth the time periods during which
interest-earning assets and interest-bearing liabilities will mature or may
reprice in accordance with their contractual terms. The interest rate
relationships between the repriceable assets and repriceable liabilities are not
necessarily constant. The table should, therefore, be used only as a guide as to
the possible effect changes in interest rates might have on the net margins of
Western Sierra.



   
                                       152
    

<PAGE>   162

<TABLE>
<CAPTION>
                                                                                December 31, 1997
                                                     -----------------------------------------------------------------------
                                                                    Over Three
                                                                      Months          Over
                                                     Next Day         Through       One Year
(Dollars in thousands)                               to Three         Twelve         Through          Over
(Unaudited)                                           Months          Months        Five Years      Five Years       Total
                                                     --------       ----------      ----------      ----------      --------
<S>                                                  <C>            <C>             <C>             <C>             <C>
Assets:
       Federal funds sold                            $  6,550                                                       $  6,550
       Taxable investment securities                      606        $    391        $  1,227        $ 16,002         18,226
       Nontaxable investment securities                                                   473           2,050          2,523
       Loans                                           37,119          17,679          10,084           4,628         69,510
                                                     --------        --------        --------        --------       --------
             Total interest-earning assets             44,275          18,070          11,784          22,680         96,809
                                                     --------        --------        --------        --------       --------
Liabilities:
       Savings deposits(1)                             27,464                                                         27,464
       Time deposits                                   24,275          22,950           4,705             100         52,030
                                                     --------        --------        --------        --------       --------
             Total interest-bearing liabilities        51,739          22,950           4,705             100         79,494
                                                     --------        --------        --------        --------       --------

Net (interest-bearing liabilities)
 interest-earning assets                             $ (7,464)       $ (4,880)       $  7,079        $ 22,580       $ 17,315
                                                     ========        ========        ========        ========       ========

Cumulative net (interest-bearing liabilities)
 interest-earning assets ("GAP")                     $ (7,464)       $(12,344)       $ (5,265)       $ 17,315
                                                     ========        ========        ========        ========

Cumulative GAP as a percentage of
 total interest-earning assets                          (7.71)%        (12.75)%         (5.44)%         17.89%
                                                     ========        ========        ========        ========
</TABLE>

- ----------

(1)    Savings deposits include interest-bearing transaction accounts.



   
                                       153
    

<PAGE>   163

The following table sets forth the distribution of the expected maturities of
Western Sierra's interest-earning assets and interest-bearing liabilities as of
December 31, 1997 as well as the fair value of these instruments. Expected
maturities are based on contractual agreements. Savings accounts and
interest-bearing transaction accounts, which have no stated maturity, are
included in the 1998 maturity category.

                               EXPECTED MATURITIES

<TABLE>
<CAPTION>
(Dollars in thousands)
(Unaudited)                            1998         1999       2000        2001        2002      Thereafter    Total     Fair Value
                                      -------     -------     -------     -------     -------    ----------   -------    ----------
<S>                                   <C>         <C>         <C>         <C>         <C>        <C>          <C>        <C>
Federal funds sold                    $ 6,550                                                                 $ 6,550     $ 6,550
       Weighted average rate             5.70%                                                                   5.70%
Investment securities(1)              $   997     $   227     $   574                 $   899     $18,052     $20,749     $20,791
       Weighted average rate             5.20%       8.10%       6.30%                   6.00%       6.30%       6.25%
Fixed rate loans                      $ 7,871     $ 1,564     $   703     $ 1,476     $   905     $ 5,211     $17,730     $16,812
       Weighted average rate             9.67%       9.80%       9.80%       9.40%       9.50%       8.27%       9.17%
Variable rate loans(2)                $46,219     $ 2,782     $ 1,176     $   561     $   344     $   698     $51,780     $51,780
       Weighted average rate             9.80%       9.90%       9.95%       9.40%       9.40%       9.85%       9.78%

Total interest-bearing assets         $61,637     $ 4,573     $ 2,453     $ 2,037     $ 2,148     $23,961     $96,809     $95,933

Savings deposits(3)                   $27,464                                                                 $27,464     $27,464
       Weighted average rate             1.95%                                                                   1.95%
Time deposits                         $47,225     $ 2,706     $ 1,332     $   259     $   371     $   137     $52,030     $52,037
       Weighted average rate             5.40%       5.65%       5.80%       6.10%       6.20%       2.00%       5.40%

Total interest-bearing liabilities    $74,689     $ 2,706     $ 1,332     $   259     $   371     $   137     $79,494     $79,501
</TABLE>

- ----------

(1)    Interest rates on tax exempt obligations have not been tax effected to
       include the related tax benefit in calculating the weighted average
       yield.

(2)    Of the total variable rate loans, 90% reprice in one year or less.

(3)    Savings deposits include interest-bearing transaction accounts.



   
                                       154
    

<PAGE>   164

MANAGEMENT

INFORMATION ON DIRECTORS AND EXECUTIVE OFFICERS. The following table sets forth
certain information, as of February 1, 1999, with respect to those persons who
are directors and executive officers of Western Sierra and Western Sierra
National Bank:


<TABLE>
<CAPTION>
                                            Year First
                                            Appointed
                                            Director or
         Name                  Age            Officer                          Title
- -------------------------      ---         --------------       ---------------------------------------
<S>                            <C>         <C>                  <C>

Joseph A. Surra                57              1983             Chairman of the Board

Robert G. Albrecht             80              1983             Director

Charles W. Bacchi              55              1993             Director

Barbara L. Cook                67              1993             Director

Kirk Dowdell                   36              1997             Senior Vice President and Chief Credit Officer
                                                                of Western Sierra National Bank.

William J. Fisher              51              1993             Director

Lesa Fynes                     40              1987             Controller of Western Sierra and Western
                                                                Sierra National Bank.

Gary D. Gall                   47              1993             Director, President and Chief Executive
                                                                Officer of Western Sierra and Western Sierra
                                                                National Bank.

Richard L. Golemon             66              1983             Director

Stephanie M. Marsh             52              1993             Senior Vice President and Chief
                                                                Administrative Officer of Western Sierra
                                                                National Bank.

Harold S. Prescott, Jr.        67              1983             Director

Darol B. Rasmussen             77              1987             Director

Osvaldo I. Scariot             72              1983             Secretary and Director
</TABLE>

The business experience of each of the directors and executive officers for the
past five years is described below.

JOSEPH A. SURRA has been the Assistant Superintendent of Business and Facilities
for Auburn Union School district for fifteen years. He also owned and operated
Gold Country Hardware Inc. for fifteen years. He was Director of Business
Affairs to Sacramento State University and was responsible for budgeting,
accounting and general services for eight years. He currently serves as a
director on a nonprofit board.



   
                                       155
    

<PAGE>   165

ROBERT G. ALBRECHT was part owner of Wisner and Becker Contractor Engineers for
thirty-three years and served as the President and Chief Executive Officer for
twelve years. He retired in 1983. Mr. Albrecht bought Coyote Creek Ranch in
Winnemucca, Nevada in 1982 and still runs the ranch today.

CHARLES W. BACCHI is the owner of Coyote Creek Ranch, Winnemucca, Nevada. He was
employed at the California State Legislature for over five years. The government
of Guam also employed him as a political consultant of the governor for five
years.

BARBARA L. COOK was an owner and partner with Cook and Cook Real Estate for
thirteen years. She was also the co-owner of Coker and Cook Real Estate for
three years. The business was sold in 1998 to Caldwell Banker where Ms. Cook
continues as a Broker Associate.

KIRK DOWDELL has been Senior Vice President and Chief Credit Officer of Western
Sierra National Bank since September of 1997. Prior to coming to Western Sierra
National Bank he was Regional Vice President for the Banking Division of
Commerce Security Bank. His responsibilities with Commerce Security Bank ranged
from supervising note, credit administration operation, cash management to
commercial real estate operations. He has nine years banking experience.

WILLIAM J. FISHER is an attorney and is the President and broker of Pacific
States Development Corporation, real estate development and marketing firm.

LESA FYNES has been with Western Sierra National Bank since 1987. She was
promoted to Assistant Controller in August of 1989, and was promoted to
Controller of Western Sierra National Bank in September of 1990. In October of
1998, Ms. Fynes was promoted to Chief Financial Officer of Western Sierra
National Bank. She has been Controller of Western Sierra since its formation in
1996. In 1997, Ms. Fynes successfully passed the Certified Public Accountant
Exam test.

GARY D. GALL has been President and Chief Executive Officer of Western Sierra
National Bank since 1993. He has been President and Chief Executive Officer of
Western Sierra since its formation in 1996. He previously served as the
President and Chief Executive Officer of Delta National Bank for six years. He
has twenty-six years of banking experience. He currently serves on the Board of
Trustees of Simpson's College in Redding, California.

RICHARD GOLEMON is retired from Mays Sheet Metal which he owned for fifteen
years.

STEPHANIE M. MARSH has been Senior Vice President and Chief Administrative
Officer of Western Sierra National Bank since 1993. She has had the
responsibility of bank operations, personnel and MIS systems. She has
twenty-seven years of banking experience in these areas.

HAROLD S. PRESCOTT, JR. owns Prescott Engineering.

DAROL B. RASMUSSEN practiced dentistry for thirty years in Carmichael,
California. He is now retired. Darol currently serves as a Director on the
Sacramento College Foundation board.



   
                                       156
    

<PAGE>   166

OSVALDO I. SCARIOT owned and operated El Dorado Disposal Service and Western El
Dorado Recovery System for over 50 years. He sold the business in 1998. He is
now retired.

WESTERN SIERRA'S BOARD OF DIRECTORS AND COMMITTEES. Western Sierra's Board of
Directors met twelve (12) times in 1997. None of Western Sierra's directors
attended less than 75 percent of all of Western Sierra's Board of Directors'
meetings and committee meetings (of which they were a member) except Barbara
Cook who attended 66 2/3% of the meetings.

Western Sierra has an Audit Committee which met twelve (12) times in 1997. The
Audit Committee consists of Robert Albrecht, Charles Bacchi, Barbara Cook and
Harold Prescott. The purpose of the Audit Committee is to review all internal
and external examination reports, review internal audit findings and monitor
Year 2000 progress and to select Western Sierra's independent certified public
accountants.

   
Western Sierra has an Executive Committee which met ten (10) times in 1997. The
Executive Committee consists of Robert Albrecht, Gary Gall, Harold Prescott,
Darol Rasmussen, Osvaldo Scariot and Joseph Surra. The purpose of the Executive
Committee is to review policies, review human resource issues, grant stock
options and approve other personnel matters which are in excess of management's
authority, consider mergers and acquisitions, develop marketing programs and
participate in strategic planning, and evaluate the directors for various
performance rating factors to determine each director's monthly director's fees
and to make recommendations to Western Sierra's Board of Directors regarding
nominees for election of directors.
    

COMPENSATION OF DIRECTORS AND EXECUTIVE OFFICERS.

Director Compensation. Directors receive $300 per month for director fees from
Western Sierra and $300 per month from Western Sierra National Bank, except the
Chairman of Western Sierra who receives $1,000 per month as director's fees for
Western Sierra and $300 per month as director's fees for Western Sierra National
Bank. No additional fees are paid for the directors' attendance at committee
meetings. The directors have been granted stock options: Messrs. Albrecht,
Goleman, Prescott, Scariot and Surra were granted stock options in July 1989 to
acquire 12,975 shares at $4.82 per share (the options of Messrs. Prescott and
Scariot have been fully exercised), Dr. Rasmussen was granted a stock option in
July 1989 to acquire 5,190 shares at $4.82 per share (these options of Dr.
Rasmussen have been fully exercised), and all of the directors were also each
granted stock options to acquire 4,664 shares in November 1996 with an option
exercise price of $8.58 per share (these options of Dr. Rasmussen and Ms. Cook
were also fully exercised and Mr. Bacchi exercised 700 shares of this option.)
The director stock options have a term of 10 years and are all completely
vested. Each of the directors participates in Western Sierra National Bank's
incentive compensation plan and earned under such plan a bonus of $5,359 in 1996
and a bonus of $8,764 in 1997.

Executive Compensation. During 1997, Western Sierra did not pay any cash
compensation to its executive officers and no such cash compensation is expected
to be paid during 1998. However, the persons serving as the executive officers
of Western Sierra received during 1997, and have received in 1998, cash
compensation in their capacities as executive officers of Western Sierra
National Bank.



   
                                       157
    

<PAGE>   167

The following table sets forth a summary of the compensation paid during Western
Sierra's past three fiscal years for services rendered in all capacities to Gary
D. Gall, the President and Chief Executive Officer of Western Sierra and Western
Sierra National Bank, and to Stephanie M. Marsh, the Senior Vice President and
Chief Administrative Officer of Western Sierra National Bank, the only executive
officers of Western Sierra and/or Western Sierra National Bank whose annual base
compensation and bonus exceeded $100,000 during Western Sierra's 1997 fiscal
year.

                           SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                          Long Term Compensation
                                                                                    ---------------------------------
                                  Annual Compensation                                        Awards           Payouts
- ---------------------------------------------------------------------------------   -----------------------   -------
           (a)                      (b)          (c)          (d)          (e)          (f)          (g)        (h)           (i)
- ----------------------------      -------      -------      -------     ---------   -----------    --------   -------      ---------
                                                                         Other
                                                                         Annual     Restricted                             All Other
        Name and                                                         Compen-       Stock                   LTIP         Compen-
        Principal                              Salary        Bonus      sation(1)     Award(s)     Options/   Payouts      sation(3)
        Position                    Year         ($)          ($)          ($)          ($)        SARs(2)      ($)          ($)
- ----------------------------      -------      -------      -------     ---------   -----------    --------   -------      ---------
<S>                               <C>          <C>          <C>         <C>         <C>            <C>        <C>          <C>
Gary D. Gall, President,             1997      127,500      109,486        8,497            0       27,500          0       10,773
CEO and Director                     1996      120,000       67,528        8,260            0       11,660          0        7,580
of Western Sierra and                1995      107,200       37,462        4,214            0        1,298          0        4,321
Western Sierra National Bank

Stephanie M. Marsh                   1997       71,070       54,743        3,750            0        3,300          0        7,162
Senior Vice President and            1996       68,400       33,764        3,495            0        5,830          0        4,710
Chief Administrative Officer         1995       68,400       18,656        2,770            0            0          0        3,105
of Western Sierra National
Bank
</TABLE>


(1)    These amounts represent perquisites consisting of country club fees for
       all officers and automobile allowance and family health insurance
       premiums for Mr. Gall.

(2)    These amounts are adjusted for stock dividends. Western Sierra has no
       SARs.

(3)    This amount represents Western Sierra's contribution for the cost of
       premiums for life insurance and 401(k) Plan and ESOP.



   
                                       158
    

<PAGE>   168

                             OPTION/SAR GRANTS TABLE
                      OPTION/SAR GRANTS IN LAST FISCAL YEAR

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------
                                          Individual Grants(1)
- -----------------------------------------------------------------------------------------------
       (a)                     (b)                (c)              (d)                 (e)
- ------------------         ------------      ------------      -----------        -------------
                                              % of Total
                                             Options/SARs
                           Options/SARs       Granted to       Exercise or
                             Granted         Employees in       Base Price         Expiration
    Name                       (#)           Fiscal Year        ($/Share)             Date
- ------------------         ------------      ------------      -----------        -------------
<S>                        <C>               <C>               <C>                <C>
Gary D. Gall                  27,500              55.6          $  10.91           May 20, 2007
Stephanie M. Marsh             3,300               6.7          $  11.36          July 16, 2007
</TABLE>


(1)    Western Sierra has no SARs and the number of options and exercise price
       is adjusted for stock dividends.


                  OPTION/SAR EXERCISES AND YEAR END VALUE TABLE
            AGGREGATED OPTION/SAR EXERCISES IN LAST FISCAL YEAR AND
                           YEAR END OPTION/SAR VALUE

<TABLE>
<CAPTION>
       (a)                       (b)               (c)                    (d)                           (e)
- ------------------         --------------    ----------------       -----------------            -----------------
                                                                                                     Value of
                                                                       Number of                   Unexercised 
                                                                      Unexercised                  In-the-Money
                                                                     Options/SARs at              Options/SARs at
                               Shares                                  Year End (#)                Year End ($)
                             Acquired on      Value Realized           Exercisable/                Exercisable/
     Name                    Exercise (#)          ($)               Unexercisable(1)             Unexercisable(1)
- ------------------         --------------    ----------------       -----------------            -----------------
<S>                        <C>               <C>                    <C>                          <C>
Gary D. Gall                        0                  0                11,308/29,150            $104,500/$237,608
Stephanie M. Marsh                  0                  0                  2,992/9,130              $27,846/$53,550
</TABLE>

(1)    Western Sierra has no SARs.



   
                                      159
    

<PAGE>   169
   
On December 4, 1997, Western Sierra National Bank entered into an agreement with
Mr. Gall to provide him with severance benefits of up to two years' worth of his
regular compensation at the time of severance of employment in the event of

- -       any merger or consolidation where Western Sierra National Bank is (A) 
        not the surviving or resulting corporation or (B) the surviving
        corporation and the shareholders of Western Sierra at the time
        immediately prior to such merger will own less than 50% on a direct or
        indirect basis of the voting equity interests of the surviving
        corporation after such merger,

- -       upon transfer of all or substantially all of the assets of Western
        Sierra National Bank, or

- -       a sale of the equity securities of Western Sierra representing more than
        50% of the aggregate voting power of all outstanding equity securities
        of Western Sierra to any person or entity, or any group of persons
        and/or entities acting in concert (any of these events shall be referred
        to as an "Acquisition"). 

The severance agreement is for a term of 5 years, and in the event of an
Acquisition, if Mr. Gall is not given a new employment agreement that is
satisfactory to him in his sole discretion within 15 days prior to the date of
consummation of the Acquisition, then Western Sierra National Bank shall pay him
the severance payment in a lump sum.
    

   
On December 4, 1997, Western Sierra National Bank also entered into an agreement
with Ms. Marsh to provide her with severance benefits of up to two years' worth
of her regular compensation at the time of severance of employment in the event
of 

- -       any merger or consolidation where Western Sierra National Bank is (A)
        not the surviving or resulting corporation or (B) the surviving
        corporation and the shareholders of Western Sierra at the time
        immediately prior to such merger will own less than 50% on a direct or
        indirect basis of the voting equity interests of the surviving
        corporation after such merger,

- -       upon transfer of all or substantially all of the assets of Western 
        Sierra National Bank, or 

- -       a sale of the equity securities of Western Sierra representing more than
        50% of the aggregate voting power of all outstanding equity securities
        of Western Sierra to any person or entity, or any group of persons
        and/or entities acting in concert (any of these events shall be referred
        to as an "Acquisition"). 

The severance agreement is for a term of 5 years, and in the event of an
Acquisition, if Ms. Marsh is not retained by the resulting corporation in a
position comparable to that of the highest level senior vice president or a
position acceptable to her for a period of up to two years because she is
terminated by the resulting corporation or constructively terminated by the
resulting corporation then she is to be paid the severance payment in a lump sum
within ten days of such termination.
    

   
Mr. Gall also has a salary continuation agreement which provides that Western
Sierra National Bank will pay him $75,000 per year for 15 years following his
retirement from Western Sierra National Bank at age 65 or later ("Retirement
Age"). In the event of disability while Mr. Gall is actively employed prior to
Retirement Age, he will receive a benefit amount that is a percentage 
    


   
                                       160
    

<PAGE>   170
   
of the $75,000 per year for 15 years based on the vesting schedule below
beginning at the earlier of the time when he reaches age 65 or the date on which
he is no longer entitled to disability benefits provided by Western Sierra
National Bank. In the event Mr. Gall dies while actively employed by Western
Sierra National Bank prior to Retirement Age, his beneficiary will receive from
Western Sierra National Bank a lump sum benefit amount equal to the present
value (using an 8% discount rate) of $75,000 per year for fifteen years, as if
such amount is to be paid starting one month after his death. In the event of
termination with or without cause or voluntary termination, Mr. Gall shall
receive a benefit amount that is a percentage of the $75,000 per year for 15
years based on the vesting schedule below for 15 years beginning with the month
following the month in which Mr. Gall attains age 65 or beginning with the month
following his death, if earlier. Mr. Gall may also elect to receive a benefit
amount that is a percentage of the $75,000 per year for 15 years based on the
vesting schedule below upon early retirement which is after at least 15 years of
service beginning January 9, 1995. The vesting schedule is 5% per year of
service for the first seventeen years beginning January 9, 1995, and decreases
to an additional 3% per year of service for the last five years. Payment of
salary continuation benefits to Mr. Gall is subject to his not working as an
employee, independent contractor, or consultant of or for a branch of a
financial institution located within a 15 mile radius of any branch of Western
Sierra National Bank.
    

CERTAIN TRANSACTIONS

Some of the directors and executive officers of Western Sierra and their
immediate families, as well as the companies with which they are associated, are
customers of, or have had banking transactions with, Western Sierra in the
ordinary course of Western Sierra's business, and Western Sierra expects to have
banking transactions with such persons in the future. In management's opinion,
all loans and commitments to lend in such transactions were made in compliance
with applicable laws and on substantially the same terms, including interest
rates and collateral, as those prevailing for comparable transactions with other
persons of similar creditworthiness and in the opinion of management did not
involve more than a normal risk of collectibility or present other unfavorable
features.



   
                                       161
    

<PAGE>   171

   
                          Description of Lake Community
    

AVAILABLE INFORMATION

Lake is subject to the informational requirements of the Exchange Act as
administered by the FDIC, and files reports, proxy statements and other
information with the FDIC. Materials filed by Lake can be inspected and copies
can be obtained from the Registration and Disclosure Section of the FDIC, at
1776 F Street, N.W., Room F-6043, Washington, D.C. 20006 at prescribed rates or
obtained by calling the public files of the FDIC's Registration, Disclosure and
Securities Operations Unit at (202) 898-8913 or by Fax at (202) 898-3909.

BUSINESS

GENERAL. Lake Community was incorporated as a banking corporation under the laws
of the State of California on March 9, 1984. Lake Community commenced operations
as a California state-chartered bank on November 15, 1984. Lake Community
engages in the general commercial banking business in Lake County in the State
of California from its headquarters banking office located at 805 Eleventh
Street, Lakeport, California, and its branches located at 1377 S. Main Street,
Lakeport, California and 4280 Main Street, Kelseyville, California. Lake
Community is in the process of consolidating its Main Street, Lakeport office
with Lake Community's headquarters office located on Eleventh Street in
Lakeport.

Lake Community is an insured bank under the Federal Deposit Insurance Act and is
not a member of the Federal Reserve System.

BANKING SERVICES. Lake Community conducts a commercial banking business which
includes accepting demand, savings and time deposits and making commercial, real
estate and installment loans. It also offers installment note collections,
issues cashier's checks, sells traveler's checks and provides safe deposit boxes
and other customary banking services. Lake Community does not offer trust
services or international banking services and does not plan to do so in the
near future. There have been no significant changes in the kinds of services
rendered, the principal markets for or the methods of distribution of such
services during the last three fiscal years.

Lake Community's operating policy since its inception has emphasized serving the
banking needs of individuals and the business and professional communities in
Lakeport, California and its surrounding area. At September 30, 1998 the total
of Lake Community's installment and credit card loans outstanding was
$2,529,963, the total of commercial loans outstanding was $4,449,252, the total
of agricultural loans outstanding was $18,026,210, and the total of real estate
loans outstanding was $30,136,531 ($1,156,812 in construction loans and
$28,974,719 in residential and commercial real estate loans), representing 4.6%,
8.1%, 32.7% and 54.6%, respectively, of Lake Community's loan portfolio. Lake
Community accepts real estate, listed and unlisted securities, savings and time
deposits, automobiles, machinery and equipment as collateral for loans.

The majority of Lake Community's real estate lending activities are limited to
Lake County commercial and residential properties. Real estate secured loans are
generally written at fixed rates of interest and have maturities ranging from
one to seven years. Variable rate real estate loans may have longer maturities.
Lake Community, from time to time, makes interim

   
                                       162
    

<PAGE>   172

construction loans to well established contractors and/or developers who have
take-out financing. Lake Community generally does not do take-out loans or
permanent real estate financing. However, permanent financing may be extended on
income property with sufficient cash flow to support debt payments. Real estate
loans are usually extended on properties at 70-80% of the cost or appraised
value of the property, whichever is lower. At September 30, 1998, Lake
Community's real estate loan portfolio consisted of approximately 50%
residential properties and 50% commercial properties.

Real estate values remained relatively stable during the first nine months of
1998 with a slight upturn in market values for residential properties in the
second and third quarter. Commercial property values also remained stable, but
sales activity continued to be weak throughout the year. For the nine month
periods and three years covered by the financial statements set forth herein,
approximately twelve (12) real estate loans in the aggregate amount of
approximately $357,380 have been written down by Lake Community. Additionally,
as of September 30, 1998, Lake Community held three (3) properties as other real
estate owned ("OREO"), consisting mostly of real property acquired through, or
in lieu of, foreclosure.

Lake Community's deposits are attracted from individual and commercial
customers. A material portion of Lake Community's deposits has not been obtained
from a single person or a few persons, the loss of any one or more of which
would have a material adverse effect on the business of Lake Community, nor is a
material portion of Lake Community's loans concentrated within a single industry
or group of related industries.

In order to attract loan and deposit business from individuals and small
businesses, Lake Community maintains lobby hours from 9:00 A.M. to 4:00 P.M.,
Monday through Thursday and from 9:00 A.M. to 6:00 P.M. on Friday. Lake
Community also maintains drive-up window hours from 7:30 A.M. to 5:30 P.M.,
Monday through Thursday and from 7:30 A.M. to 6:00 P.M. on Friday. Two automated
teller machines (one walk-up and one drive-up) operate 24 hours per day, seven
days per week, at Lake Community's headquarters banking office.

Lake Community relies substantially on local promotional activity, personal
contacts by its officers, directors and employees, referrals by its
shareholders, extended hours, personalized service and its reputation in the
communities it serves to compete effectively.

EMPLOYEES. At September 30, 1998, Lake Community employed 44 persons on a
full-time basis. Lake Community believes its employee relations are excellent.

PROPERTIES. Lake Community owns its headquarters office located at 805 Eleventh
Street, Lakeport, California. The headquarters office is built on 47,188 square
feet of land.

Lake Community's Shoreline Center Branch Office located at 1377 S. Main Street,
Lakeport, California was consolidated into Lake Community's headquarters office
on November 23, 1998. Lake Community leases the premises, which consists of
2,000 square feet, pursuant to the First Amendment to Lease entered into as of
December 28, 1991 with Shoreline Center, Ltd, a general partnership, as
Landlord. In 1997, the lease was extended for 5 years commencing January 1, 1997
through December 31, 2001 at a base rental of $0.50 a square foot, or $1,000 per
month. The base rental is subject to adjustment every 2 years in accordance with
changes in the Consumer Price Index-All Urban Consumers, All Items, San
Francisco-Oakland-San Jose,

   
                                       163
    

<PAGE>   173
California. In no event, however, shall the adjusted monthly rental be less than
the base rent or more than $1,100. Lake Community also pays for insurance, its
pro rata share of property taxes, and separately metered utilities. There are no
options to extend or renew the lease. Lake Community is in the process of
subletting the premises.

Lake Community's Kelseyville Branch Office is located at 4280 Main Street,
Kelseyville, CA and opened for business on March 11, 1996. Lake Community leases
the premises, which consists of 2,140 square feet, pursuant to a lease dated
December 18, 1995 between Lake Community as tenant and Dr. Ernest Zinke as
Landlord, and is for a term of four (4) years. Rent is $1,500 per month. At the
end of the initial term, Lake Community has options to renew for two consecutive
four (4) year periods, with terms to be negotiated at the time of exercise.

Lake Community owns the modular building which housed its former headquarters
banking office. This building with the addition now consists of approximately
4,027 square feet of interior space. Lake Community presently has sublet one
half of this space at $1.15 per square foot triple net, for a five year term.

LEGAL PROCEEDINGS. In the normal course of business, Lake Community is
occasionally made a party to actions seeking to recover damages from Lake
Community. In the opinion of Lake Community's management, the ultimate
disposition of these matters will not have a material adverse effect on Lake
Community's financial condition.

SUPERVISION AND REGULATION. As a California state-licensed bank, Lake Community
is subject to regulation, supervision and periodic examination by the DFI and
the FDIC. Lake Community is not a member of the Federal Reserve System, but is
nevertheless subject to certain regulations of the FRB. Lake Community's
deposits are insured by the FDIC to the maximum amount permitted by law, which
is currently $100,000 per depositor in most cases.

The regulations of these state and federal bank regulatory agencies govern most
aspects of Lake Community's business and operations, including but not limited
to, the scope of its business, its investments, its reserves against deposits,
the nature and amount of any collateral for loans, the timing of availability of
deposited funds, the issuance of securities, the payment of dividends, bank
expansion and bank activities, including real estate development and insurance
activities, and the maximum rates of interest allowed on certain deposits. Lake
Community is also subject to the requirements and restrictions of various
consumer laws and regulations.

SUMMARY OF EARNINGS

The following Summary of Earnings of Lake Community for the three years ended
December 31, 1997 has been derived from financial statements audited by
Perry-Smith & Co., LLP, independent certified public accountants, as described
in their report included elsewhere in this joint proxy statement/prospectus. The
amounts shown for the nine months ended September 30, 1998 and 1997 are
unaudited. The September 30, 1998 and 1997 amounts reflect, in the opinion of
management, all adjustments (consisting only of normal recurring adjustments)
necessary for a fair presentation of the results of operations for such periods.
These statements should be read in conjunction with the Financial Statements and
the Notes relating thereto which appear elsewhere herein.


   
                                       164
    

<PAGE>   174

<TABLE>
<CAPTION>

                                               Nine Months Ended
(Dollars in thousands,                            September 30,                          Year Ended December 31,(1)
except per share data)                    -----------------------------       ----------------------------------------------
                                             1998               1997              1997              1996              1995
                                          ----------       ------------       ----------         ----------       ----------
                                                  (unaudited)
<S>                                       <C>               <C>               <C>               <C>               <C>
Interest income                               $4,839            $4,868            $6,560            $6,847            $7,002

Interest expense                               1,916             1,895             2,562             2,845             3,056

Net interest income                            2,923             2,973             3,998             4,002             3,946

Provision for loan losses                        270               270               263               477               210

Net interest income after
 provision for loans losses                    2,653             2,703             3,735             3,525             3,736

Other noninterest income                         504               413               630               678               681

Noninterest expense                            2,657             2,408             3,222             3,524             3,301

Earnings before income taxes                     500               708             1,143               679             1,116

Provision for income taxes(2)                    147               258               377               203               335

Net income                                       353               450               766               476               781

Basic earnings per share                      $ 0.28            $ 0.36            $ 0.62            $ 0.38            $ 0.63

Number of shares used in basic
 earnings per share calculation(3)         1,265,387         1,240,546         1,240,546         1,240,491         1,239,791

Diluted earnings per share                    $ 0.27            $ 0.35            $ 0.59            $ 0.36            $ 0.59

Number of shares used in diluted
 earnings per share calculation(4)         1,329,428         1,276,729         1,297,954         1,308,758         1,315,310
</TABLE>

- -------------------

(1)     See Notes to Financial Statements for a summary of significant
        accounting policies and other related data.

(2)     See Notes to Financial Statements for an explanation of income taxes.

(3)     Basic earnings per share information is based on the weighted average
        number of shares of common stock outstanding during each period.

(4)     Diluted earnings per share information is based on the weighted average
        number of shares of common stock and common stock equivalents
        outstanding during each period.

The following table sets forth selected ratios for the periods indicated:

<TABLE>
<CAPTION>

                                         Nine Months Ended                             Year Ended
(Unaudited)                                September 30,                               December 31,
                                     -----------------------         ---------------------------------------
                                       1998            1997            1997           1996            1995
                                     --------        --------        --------       --------        --------
<S>                                  <C>             <C>             <C>             <C>            <C>
Net earnings to average
 shareholders' equity(1)               5.25%           7.18%           9.05%           5.91%          10.08%

Net earnings to
 average total assets(1)                .56%            .74%            .93%            .55%            .97%

Total interest expense to
 total interest income                39.59%          38.93%          39.05%          41.55%          43.64%

Other operating income to
 other operating expense              18.97%          17.15%          19.55%          19.24%          20.63%
</TABLE>

- -----------------

(1)     Ratios have been annualized for the nine months ended September 30, 1998
        and 1997.



   
                                      165
    

<PAGE>   175
LAKE COMMUNITY'S MANAGEMENT'S DISCUSSION AND ANALYSIS
OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

CERTAIN MATTERS DISCUSSED OR INCORPORATED BY REFERENCE IN THIS JOINT PROXY
STATEMENT/PROSPECTUS ARE FORWARD-LOOKING STATEMENTS THAT ARE SUBJECT TO RISKS
AND UNCERTAINTIES THAT COULD CAUSE ACTUAL RESULTS TO DIFFER MATERIALLY FROM
THOSE PROJECTED IN THE FORWARD-LOOKING STATEMENTS. SUCH RISKS AND UNCERTAINTIES
INCLUDE, BUT ARE NOT LIMITED TO, THOSE DESCRIBED IN THIS "LAKE COMMUNITY'S
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS." THEREFORE, THE INFORMATION SET FORTH HEREIN SHOULD BE CAREFULLY
CONSIDERED WHEN EVALUATING THE BUSINESS PROSPECTS OF LAKE COMMUNITY.

The following is Lake Community's management's discussion and analysis of the
significant changes in income and expense accounts presented in the Summary of
Earnings for the years ended December 31, 1997, 1996 and 1995 and the nine
months ended September 30, 1998 and 1997.

INTRODUCTION. This discussion is designed to provide a better understanding of
significant trends related to Lake Community's financial condition, results of
operations, liquidity, capital resources and interest rate sensitivity. It
should be read in conjunction with Lake Community's audited financial statements
and unaudited interim financial statements and notes thereto and the other
financial information appearing elsewhere in this joint proxy
statement/prospectus.

NET INTEREST INCOME AND NET INTEREST MARGIN. Total interest income decreased
from $7.00 million in 1995 to $6.85 million in 1996, and to $6.56 million in
1997, representing a 2.23% decrease in 1996 from 1995 and a 4.19% decrease in
1997 from 1996. Total interest income decreased from $4.87 million for the nine
months ended September 30, 1997, to $4.84 million for the nine months ended
September 30, 1998, representing a .60% decrease. The decrease in interest
income from 1995 to 1996 resulted from a decrease in the yield on earning assets
from 9.36% to 9.01%. The decrease from 1996 to 1997 resulted from a decrease in
average interest-earning assets from $76.0 million to $72.5 million. Average
interest-earning assets increased at September 30, 1998 to $74.6 million from
$71.4 million at September 30, 1997. Total interest expense decreased from $3.06
million in 1995 to $2.85 million in 1996 and to $2.56 million in 1997,
representing a 6.90% decrease in 1996 from 1995 and a 9.95% decrease in 1997
from 1996. Total interest expense increased from $1.90 million for the nine
months ended September 30, 1997, to $1.92 million for the nine months ended
September 30, 1998, representing a 1.12% increase.

Lake Community's net interest margin (net interest income divided by average
earning assets) was 5.27% in 1995, 5.27% in 1996, and 5.52% in 1997. The net
interest margin for the nine months ended September 30, 1997 was 5.56% and for
the nine months ended September 30, 1998 was 5.22%. The primary reason for the
decrease in the net interest margin for the nine months ended September 30, 1998
from the nine months ended September 30, 1997 was the overall change in mix in
interest-earning assets, with average loans outstanding decreasing by $1.37
million and investments, with a lower average yield, increasing by $1.88
million. Total interest expense decreased from 1996 to 1997 due primarily to a
$3.33 million decrease in higher yielding time deposits during that period. The
growth in deposits since 1997 resulted in the increase in interest expense for
the nine months ended September 30, 1998 over the same nine

   
                                       166
    

<PAGE>   176

month period in 1997. Lake Community's net interest income increased from $3.95
million in 1995 to $4.00 million in 1996 and decreased slightly to $4.00 million
in 1997, representing a 1.42% increase in 1996 from 1995 and a .10% decrease in
1997 from 1996. Net interest income decreased slightly from $2.97 million for
the nine months ended September 30, 1997 to $2.92 million for the nine months
ended September 30, 1998, representing a 1.68% decrease.

The following table sets forth the changes in interest income and expense
attributable to changes in rates and volumes:

ANALYSIS OF CHANGES IN NET INTEREST INCOME.

<TABLE>
<CAPTION>

(Dollars in thousands)                                              Year Ended December 31,
                                    ----------------------------------------------------------------------------------
                                                 1997 Versus 1996                          1996 Versus 1995
                                    ----------------------------------          --------------------------------------
                                                Change          Change                           Change         Change
                                    Total       Due to          Due to          Total             Due to        Due to
                                    Change        Rate          Volume          Change             Rate         Volume
                                    ------      ------          ------          ------           -------        ------
<S>                                 <C>          <C>             <C>             <C>             <C>             <C>
CDs in other institutions           $  35        $   9           $  26           $  38           $  (7)          $  45
Federal funds sold                     36           10              26             (63)            (22)            (41)
Investment securities                (183)          (5)           (178)            (41)             (2)            (39)
Loans, gross                         (175)         (50)           (125)            (90)           (157)             67
                                    -----        -----           -----           -----           -----           -----
      Total interest-
       earnings assets               (287)         (36)           (251)           (156)           (188)             32
                                    -----        -----           -----           -----           -----           -----

NOW, MMDA                             (10)          25             (35)            (68)            (63)             (5)
Savings                                (8)           9             (17)            (86)            (82)             (4)
Certificates of deposit              (265)         (63)           (202)            (58)            (34)            (24)
                                    -----        -----           -----           -----           -----           -----
      Total interest-
       bearing liabilities           (283)         (29)           (254)           (212)           (179)            (33)
                                    -----        -----           -----           -----           -----           -----

Net interest income                 $  (4)       $  (7)          $   3           $  56           $  (9)          $  65
                                    =====        =====           =====           =====           =====           =====
</TABLE>

The change in interest income or interest expense that is attributable to both
changes in rate and changes in volume has been allocated to the change due to
rate and the change due to volume in proportion to the relationship of the
absolute amounts of changes in each.

The following is an unaudited summary of changes in earnings of Lake Community
for the nine months ended September 30, 1998 and 1997 and for the years ended
December 31, 1997 and 1996. In the opinion of Lake Community's management, the
following summary of changes in earnings reflects all adjustments which Lake
Community considers necessary for a fair presentation of the results of its
operations for these periods. This summary of changes in earnings should be read
in conjunction with the Financial Statements and Notes relating thereto
appearing elsewhere herein.


   
                                       167
    

<PAGE>   177

<TABLE>
<CAPTION>

                                            Nine Months Ended                           Year Ended December 31,
                                             September 30,             -------------------------------------------------------
(Dollars in thousands)                       1998 over 1997                1997 over 1996                 1996 over 1995
                                         ---------------------         ------------------------      -------------------------
(Unaudited)                              Amount of       % of          Amount of        % of         Amount of          % of
                                           Change       Change          Change         Change(1)      Change          Change(1)
                                         ---------      ------         ---------       ---------     ---------        ---------

<S>                                      <C>            <C>             <C>            <C>             <C>             <C>
INTEREST INCOME
  Interest and fees on loans             $(211)         (5.09)%         $(175)         (3.07)%         $ (90)          (1.55)%
  Interest on securities                    63          14.52%           (183)        (23.52)%           (41)          (5.01)%
  Interest on federal funds sold            61          49.59%             36          21.43%            (62)         (26.96)%
  Interest on deposits in
   other financial institutions             58          35.15%             35          17.68%             38           23.75%
                                         -----                          -----                          -----
     Total interest income                 (29)          (.60)%          (287)         (4.19)%          (155)          (2.21)%

INTEREST EXPENSE
  Interest on deposits                      21           1.11%           (283)         (9.95)%          (211)          (6.90)%
                                         -----                          -----                          -----
     Net interest income                   (50)         (1.68)%            (4)          (.10)%            56            1.42%

PROVISION FOR LOAN LOSSES                    0              0%           (214)        (44.86)%           267          127.14%
                                         -----                          -----                          -----
    Net interest income after
     provision for loan losses             (50)         (1.85)%           210           5.96%           (211)          (5.65)%
                                         -----                          -----                          -----

NONINTEREST INCOME
  Service charges                          105          26.99%             28           6.51%            (30)          (6.53)%
  Other income                             (14)        (58.33)%           (76)        (28.79)%           27            11.39%
                                         -----                          -----                          -----
     Total noninterest income               91          22.03%            (48)         (7.08)%            (3)           (.44)%
                                         -----                          -----                          -----

OTHER EXPENSES
  Salaries and related benefits            149          11.76%            (65)         (3.92)%            (6)           (.36)%
  Occupancy and equipment expense           24           5.21%            (40)         (6.87)%           177           42.14%
  Other                                     76          11.18%           (197)        (15.82)%            52            4.36%
                                         -----                          -----                          -----
     Total other expenses                  249          10.34%           (302)         (8.57)%           223            6.72%
                                         -----                          -----                          -----
     Income before income taxes           (208)        (29.38)%           464          68.43%           (437)         (39.16)%

PROVISION FOR INCOME TAXES                (111)        (43.02)%           174          85.71%           (132)         (39.40)%
                                         -----                          -----                          -----

     NET INCOME                          $ (97)        (21.56)%         $ 290          60.92%          $(305)          39.05%
                                         =====                          =====                          =====
</TABLE>

- ------

(1) Increase or (decrease) over previous year amount.


   
                                       168
    

<PAGE>   178

NONINTEREST INCOME. Noninterest income decreased from $681 thousand in 1995 to
$678 thousand in 1996 and to $630 thousand in 1997, representing a .44% decrease
in 1996 from 1995 and a 7.08% decrease in 1997 from 1996. Noninterest income
increased from $413 thousand for the nine months ended September 30, 1997 to
$504 thousand for the nine months ended September 30, 1998, representing a 22.0%
increase. The increase for the first nine months of 1998 over the same period in
1997 was the result of recording the increase in cash surrender value of key
officer life insurance policies.

OTHER EXPENSES. Other expenses are comprised of salaries and related benefits,
occupancy, equipment and other expenses. Other expenses increased from $3.30
million in 1995 to $3.52 million in 1996, and decreased to $3.22 million in
1997, representing a 6.72% increase in 1996 over 1995 and a 8.57% decrease in
1997 from 1996. The increase in other expenses in 1996 over 1995 related
primarily to occupancy and equipment expense with the first full year of
occupancy in Lake Community's newly constructed main office and the purchase of
a new computer system. The single largest component of other expenses is salary
and employee benefits expense, which was $1.62 million, $1.68 million and $1.69
million in 1997, 1996 and 1995, respectively. The number of full-time equivalent
employees was 46.8, 49.3 and 49.7 at December 31, 1997, 1996 and 1995,
respectively. The 3.9% decrease in salary and employee benefits expense during
1997 was due primarily to an increase in deferred direct loan origination costs
recorded as an offset to salary expense. The .4% decrease in salary and employee
benefits expense during 1996 is due primarily to selected staffing reductions
and decreased overtime expenses. Salary and employee benefit expense for the
nine month periods ended September 30, 1998 and 1997 totaled $1.42 million and
$1.27 million, respectively. The 11.7% increase in the first nine months of 1998
over the same period in 1997 was due primarily to the severance package paid to
Lake Community's Chief Financial Officer and adjustments to retirement accruals
for Lake Community's President who retired on October 31, 1998.

The following table compares the various elements of other expenses as a
percentage of average assets for the years ended December 31, 1997, 1996 and
1995 and the nine months ended September 30, 1998 and 1997. (Dollars in
thousands except percentage amounts.)

<TABLE>
<CAPTION>

                                                        Salaries                Occupancy                Other
                                      Average        and Related              & Equipment             Operating
        Period                        Assets(1)         Benefits                  Expenses             Expenses
        ------                        ---------         --------                  --------             --------
 Nine Months Ended
  September 30,(2)
 -----------------
<S>   <C>                             <C>             <C>                      <C>                    <C>
      1998                            $84,081           1.68%                     .58%                  .90%
      1997                            $81,524           1.56%                     .57%                  .83%

    Year Ended
   December 31,
  --------------
      1997                            $82,580           1.96%                     .67%                 1.27%
      1996                            $86,473           1.95%                     .69%                 1.44%
      1995                            $80,808           2.09%                     .52%                 1.48%
</TABLE>

- ---------

(1)  Based on the average of daily balances.

(2)  Expense ratios are calculated on an annualized basis.

   
                                       169
    

<PAGE>   179

PROVISION FOR LOAN LOSSES. The provision for loan losses corresponds directly to
the level of the allowance that management deems sufficient to offset potential
loan losses. The balance in the loan loss allowance reflects the amount which,
in management's judgement, is adequate to provide for these potential loan
losses after weighing the mix of the loan portfolio, current economic
conditions, past loan experience and such other factors as deserve recognition
in estimating loan losses.

Management allocated $263 thousand as a provision for loan losses in 1997, $477
thousand in 1996 and $210 thousand in 1995. Loans charged off net of recoveries
in 1997 were $218 thousand, $697 thousand in 1996 and $100 thousand in 1995. For
the nine months ended September 30, 1998 and 1997, $270 thousand was allocated
as a provision for loan losses during each period. Loans charged off net of
recoveries for the nine months ended September 30, 1998 were $62 thousand and
for the nine months ended September 30, 1997 were $284 thousand. The ratio of
the allowance for loan losses to total gross loans was 1.75% in 1997, 1.70% in
1996, and 2.08% in 1995, and for the interim periods was 2.11% at September 30,
1998 and 1.63% at September 30, 1997.

In management's opinion, the balance of the allowance for loan losses at
September 30, 1998 was sufficient to sustain any foreseeable losses in the loan
portfolio at that time.

INCOME TAXES. Income taxes were $377 thousand in 1997, $203 thousand in 1996 and
$335 thousand in 1995. The income tax provision for the nine months ended
September 30, 1998 and 1997 was $147 thousand and $258 thousand, respectively.

NET INCOME. The net income and basic earnings per share of Lake Community were
$766 thousand and $.62 per share in 1997, $476 thousand and $.38 per share in
1996, and $781 thousand and $.63 per share in 1995. The income for these periods
was primarily due to net interest income, service charges and fees. The net
income and basic earnings per share for the nine months ended September 30, 1998
were $353 thousand and $.28 per share as compared to a net income of $450
thousand and $.36 per share for the nine months ended September 30, 1997.

LIQUIDITY. Lake Community has an asset and liability management program allowing
Lake Community to maintain its interest margins during times of both rising and
falling interest rates and to maintain sufficient liquidity. Liquidity of Lake
Community at December 31, 1997 was 33.11%, at December 31, 1996 was 29.94%, and
at December 31, 1995 was 35.83% based on liquid assets (consisting of cash and
due from banks, deposits in other financial institutions, investments not
pledged, federal funds sold and loans available-for-sale) divided by total
liabilities. Lake Community's management believes it maintains adequate
liquidity levels.

CAPITAL RESOURCES. The shareholders' equity accounts of Lake Community increased
from $8.07 million at December 31, 1995, to $8.15 million at December 31, 1996
and to $8.66 million at December 31, 1997. These increases are primarily
attributable to earnings of Lake Community in 1996 and 1997 adjusted for cash
dividends paid to shareholders. Lake Community is subject to various regulatory
capital requirements administered by the federal banking agencies. Under capital
adequacy guidelines and the regulatory framework for prompt corrective action,
Lake Community must meet specific capital guidelines that involve quantitative
measures of Lake Community's assets, liabilities and certain off-balance sheet
items as calculated under regulatory accounting practices. Lake Community's
capital amounts and

   
                                       170
    

<PAGE>   180



classification are also subject to qualitative judgments by the regulators about
components, risk weightings and other factors.

Quantitative measures established by regulation to ensure capital adequacy
require Lake Community to maintain minimum amounts and ratios of total and Tier
1 capital (primarily common stock and retained earnings less goodwill) to
risk-weighted assets, and of Tier 1 capital to average assets. Management
believes, as of September 30, 1998, that Lake Community exceeds all capital
adequacy requirements to which it is subject.

As of June 30, 1998, the most recent notification from the FDIC categorized Lake
Community as well capitalized under the regulatory framework for prompt
corrective action. To be categorized as well capitalized, Lake Community must
maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios
as set forth in the table below. There are no conditions or events since that
notification which management believes have changed Lake Community's category.

Lake Community's actual capital ratios are presented below.

<TABLE>
<CAPTION>

                                                                 Minimum
                                            Minimum                Well                 Actual
                                              Capital            Capitalized         September 30,
                                           Requirement           Requirement             1998
                                           -----------           -----------             ----
<S>                                        <C>                   <C>                 <C>
Capital ratios:

  Tier 1 risk-based to
    risk-weighted assets                         4%                   6%                14.1%

  Total risk-based to
    risk-weighted assets                         8%                  10%                15.4%

   Leverage to total
    average assets                             4-5%                   5%                11.0%

</TABLE>


   
                                       171
    

<PAGE>   181
SCHEDULE OF ASSETS, LIABILITIES AND SHAREHOLDERS' EQUITY. The following schedule
shows the unaudited average balances of Lake Community's assets, liabilities and
shareholders' equity accounts and the percentage distribution of the items,
computed using the daily average balances, for the periods indicated.

<TABLE>
<CAPTION>

(Dollars in thousands)                                        Nine Months Ended
(Unaudited)                                                     September 30,
                                            --------------------------------------------------
                                                     1998                        1997
                                            -----------------------     ----------------------
                                             Amount      Percent(1)       Amount     Percent(1)
                                            --------     ----------     --------     ---------
<S>                                         <C>          <C>            <C>          <C>
ASSETS
Cash and due from banks                      $ 4,876        5.80%         $ 4,626        5.67%
Deposits in other financial institutions       5,024        5.98%           3,654        4.48%
Investment securities                         11,229       13.35%           9,347       11.47%
Federal funds sold                             4,510        5.36%           3,044        3.73%
Loans:
  Commercial                                  22,230       26.44%          25,614       31.42%
  Installment                                  5,438        6.47%           6,656        8.16%
  Real estate                                 13,488       16.04%          14,738       18.08%
  Agricultural                                12,747       15.16%           8,361       10.26%
    Less deferred fees                          (213)      (0.25)%           (223)      (0.27)%
    Less allowance for loan losses            (1,061)      (1.26)%           (901)      (1.11)%
                                             -------                      -------
  Net loans                                   52,629       62.60%          54,245       66.54%
                                             -------                      -------
Bank premises and equipment, net               2,997        3.56%           3,213        3.94%
Other assets                                   2,816        3.35%           3,395        4.16%
                                             -------                      -------
           TOTAL ASSETS                      $84,081                      $81,524
                                             =======                      =======
LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits:
  Demand                                     $12,201       14.51%         $10,716       13.14%
  NOW and money market                        13,014       15.48%          13,502       16.56%
  Savings                                     12,507       14.87%          13,586       16.67%
  Time                                        31,157       37.06%          29,507       36.19%
  Time, $100,000 and over                      5,594        6.65%           5,235        6.42%
                                             -------                      -------
     Total deposits                           74,473       88.57%          72,546       88.99%
Other liabilities                                651        0.77%             616        0.76%
                                             -------                      -------
     Total liabilities                        75,124       89.34%          73,162       89.74%
                                             -------                      -------
Shareholders' equity:
  Common stock                                 3,311        3.94%           3,178        3.90%
  Retained earnings                            5,605        6.67%           5,267        6.46%
  Unrealized gain (loss) on AFS
    investment securities                         41        0.05%             (83)      (0.10)%
                                             -------                      -------
     Total shareholders' equity                8,957       10.66%           8,362       10.26%
                                             -------                      -------
TOTAL LIABILITIES AND
 SHAREHOLDERS' EQUITY                        $84,081                      $81,524
                                             =======                      =======
</TABLE>

<TABLE>
<CAPTION>

(Dollars in thousands)
(Unaudited)                                                                 Year Ended December 31,
                                               ---------------------------------------------------------------------------------
                                                         1997                          1996                        1995
                                               ------------------------     -----------------------      -----------------------
                                                Amount       Percent(1)      Amount      Percent(1)       Amount      Percent(1)
                                               --------      ----------     --------     ----------      --------     ----------
<S>                                            <C>           <C>            <C>          <C>             <C>          <C>
ASSETS
Cash and due from banks                        $  4,762        5.77%        $  4,383        5.07%        $  4,285        5.30%
Deposits in other financial institutions          3,870        4.69%           3,432        3.97%           2,644        3.27%
Investment securities                             9,700       11.75%          12,658       14.64%          14,218       17.59%
Federal funds sold                                3,751        4.54%           3,288        3.80%           4,008        4.96%
Loans:
  Commercial                                     26,333       31.89%          26,024       30.09%          25,157       31.13%
  Installment                                     6,569        7.95%           7,510        8.68%           5,789        7.16%
  Real estate                                    14,396       17.43%          14,727       17.03%          15,848       19.61%
  Agricultural                                    7,873        9.53%           8,347        9.65%           7,147        8.84%
    Less deferred fees                             (214)      (0.26)%           (309)      (0.36)%           (395)      (0.49)%
    Less allowance for loan losses                 (910)      (1.10)%         (1,031)      (1.19)%           (378)      (0.47)%
                                                -------                     --------                     --------
  Net loans                                      54,047       65.45%          55,268       63.91%          53,168       65.80%
                                                -------                     --------                     --------
Bank premises and equipment, net                  3,182        3.85%           3,413        3.95%           3,136        3.88%
Other assets                                      3,268        3.96%           4,031        4.66%            (651)      (0.81)%
                                                -------                     --------                     --------
           TOTAL ASSETS                         $82,580                     $ 86,473                     $ 80,808
                                                =======                     ========                     ========
LIABILITIES AND SHAREHOLDERS' EQUITY
Deposits:
  Demand                                        $11,184       13.54%        $  9,883       11.43%        $  8,751       10.83%
  NOW and money market                           13,585       16.45%          14,889       17.22%          15,046       18.62%
  Savings                                        13,356       16.17%          14,096       16.30%          14,233       17.61%
  Time                                           29,581       35.82%          35,011       40.49%          31,102       38.49%
  Time, $100,000 and over                         5,793        7.02%           3,695        4.27%           3,154        3.90%
                                                -------                     --------                     --------
     Total deposits                              73,499       89.00%          77,574       89.71%          72,286       89.45%
Other liabilities                                   615        0.74%             833         .96%             773        0.96%
                                                -------                     --------                     --------
     Total liabilities                           74,114       89.75%          78,407       90.67%          73,059       90.41%
                                                -------                     --------                     --------
Shareholders' equity:
  Common stock                                    3,178        3.85%           3,177        3.67%           3,165        3.92%
  Retained earnings                               5,345        6.47%           4,990        5.77%           4,612        5.71%
  Unrealized gain (loss) on AFS
    investment securities                           (57)      (0.07)%           (101)      (0.12)%            (28)      (0.03)%
                                                -------                     --------                     --------
     Total shareholders' equity                   8,466       10.25%           8,066        9.33%           7,749        9.59%
                                                -------                     --------                     --------
TOTAL LIABILITIES AND
 SHAREHOLDERS' EQUITY                           $82,580                     $ 86,473                     $ 80,808
                                                =======                     ========                     ========
</TABLE>

- --------
(1)     Percentages of categories under assets, liabilities and shareholders'
        equity are shown as percentages of average total assets.

   
                                       172
    
<PAGE>   182
INVESTMENT PORTFOLIO. The following table summarizes the amounts, terms,
distributions and yields of Lake Community's investment securities at fair value
as of September 30, 1998, December 31, 1997 and December 31, 1996. (Dollars in
thousands)

<TABLE>
<CAPTION>

(Unaudited)                    One Year          After One Year     After Five Years
                                or Less          to Five Years        to Ten Years
                         --------------------   ---------------    -----------------
September 30, 1998       Amount        Yield    Amount    Yield    Amount     Yield
- ------------------       ------        -----    -------   -----    -------    ------
<S>                      <C>           <C>      <C>       <C>      <C>        <C>
U.S. Treasury &
 Government agencies     $     0          0%    $ 4,758   6.01%    $ 1,237     6.21%
Municipals                   351       4.98%      1,745   5.33%      1,513     6.09%
Corporate Notes/Bonds          0          0%      2,334   6.20%          0        0%
                         -------                -------            -------
           Total         $   351                $ 8,837            $ 2,750
                         =======                =======            =======
</TABLE>

<TABLE>
<CAPTION>

(Unaudited)
                              After Ten Years             Total
                             ------------------    --------------------
September 30, 1998           Amount      Yield      Amount      Yield
- ------------------           ------     -------    -------     --------
<S>                          <C>        <C>        <C>         <C>
U.S. Treasury &
 Government agencies        $     0         0%     $ 5,995       5.96%
Municipals                      103      4.75%       3,712       5.53%
Corporate Notes/Bonds             0         0%       2,334       6.19%
                            -------                -------
           Total            $   103                $12,041
                            =======                =======
</TABLE>

<TABLE>
<CAPTION>

                               One Year          After One Year     After Five Years
                                or Less          to Five Years        to Ten Years
                         ----------------      -----------------   ------------------
December 31, 1997        Amount    Yield       Amount     Yield     Amount     Yield
- ------------------       ------   -------      -------    ------   --------   -------
<S>                      <C>      <C>          <C>        <C>      <C>        <C>
U.S. Treasury &
 Government agencies     $  998    6.06%       $ 1,801     6.11%    $ 4,693    6.67%
Municipals                    0       0%         1,432     5.54%      1,392    5.93%
Corporate Notes/Bonds       491    5.77%           750     6.56%          0       0%
                         ------                -------              -------
           Total         $1,489    6.07%       $ 3,983     5.84%    $ 6,085    6.32%
                         ======                =======              =======
</TABLE>

<TABLE>
<CAPTION>


                              After Ten Years                Total
                            --------------------     ---------------------
December 31, 1997            Amount      Yield        Amount       Yield
- ------------------          -------     --------     -------       -------
<S>                          <C>        <C>          <C>            <C>
U.S. Treasury &
 Government agencies        $    20       7.45%      $ 7,512        6.31%
Municipals                      399       6.14%        3,223        5.72%
Corporate Notes/Bonds             0          0%        1,241        6.13%
                            -------                  -------
           Total            $   419       6.57%      $11,976        6.13%
                            =======                  =======
</TABLE>

<TABLE>
<CAPTION>

                               One Year          After One Year       After Five Years
                                or Less          to Five Years          to Ten Years
                         --------------------  ------------------    ------------------
December 31, 1996        Amount      Yield      Amount    Yield      Amount      Yield
- ------------------       -------    -------    -------   -------     -------    -------
<S>                      <C>        <C>        <C>        <C>         <C>        <C>
U.S. Treasury &
 Government agencies     $     0         0%    $ 2,350     5.70%     $ 4,138     6.66%
Municipals                     0         0%        696     6.37%       1,361     7.21%
Corporate Notes/Bonds        504      5.52%        500     5.90%           0        0%
                         -------               -------               -------
           Total         $   504      5.52%    $ 3,546     5.86%     $ 5,499     6.79%
                         =======               =======               =======

</TABLE>

<TABLE>
<CAPTION>

                              After Ten Years              Total
                            -------------------     -------------------
December 31, 1996           Amount       Yield       Amount      Yield
- ------------------          -------      ------     -------     -------
<S>                         <C>           <C>       <C>         <C>
U.S. Treasury &
 Government agencies        $ 1,024       7.57%     $ 7,512      6.49%
Municipals                      503       7.12%       2,560      6.96%
Corporate Notes/Bonds             0          0%       1,004      5.71%
                            -------                 -------
           Total            $ 1,527       7.42%     $11,076      6.53%
                            =======                 =======
</TABLE>

   
                                       173
    

<PAGE>   183
YEAR-END BALANCE.

The following table summarizes the year-end amortized cost and
distributions of Lake Community's investment securities held on December 31,
1997 and 1996. (Dollars in thousands):

<TABLE>
<CAPTION>

                                               December 31,
                                         ---------------------
                                           1997         1996
                                         -------      -------

<S>                                      <C>          <C>
U.S. Treasury & Government agencies      $ 7,539      $ 7,612
Municipals                                 3,136        2,522
Corporate Notes/Bonds                      1,241        1,004
                                         -------      -------
           Total                         $11,916      $11,138
                                         =======      =======
</TABLE>

LOAN PORTFOLIO. Lake Community's largest historical lending categories are real
estate loans, commercial loans, consumer loans and agricultural loans. These
categories accounted for approximately 65.6%, 10.3%, 6.4% and 17.7%,
respectively, of Lake Community's total loan portfolio at December 31, 1996,
approximately 59.7%, 9.3%, 5.4% and 25.6%, respectively, of Lake Community's
total loan portfolio at December 31, 1997 and approximately 54.6%, 8.1%, 4.6%
and 32.7%, respectively, at September 30, 1998. Loans are carried at face
amount, less payments collected and the allowance for loan losses. Interest on
all loans is accrued daily on a simple interest basis. Typically, once a loan is
placed on nonaccrual status, Lake Community reverses interest accrued through
the date of transfer. Loans are placed on a nonaccrual basis when principal or
interest on a loan is past due 90 days or more, unless the loan is both well-
secured and in the process of collection. Interest actually received for loans
on nonaccrual status is recognized as income at the time of receipt. Problem
loans are maintained on accrual status only when management of Lake Community is
confident of full repayment within a reasonable period of time.

The rates of interest charged on variable rate loans are set at specified
increments in relation to Lake Community's published lending rate and vary as
Lake Community's lending rate varies. At December 31, 1996, approximately 37% of
Lake Community's loan portfolio was comprised of variable interest rate loans,
at December 31, 1997, approximately 30% of Lake Community's loan portfolio was
comprised of variable interest rate loans, and at September 30, 1998, variable
rate loans comprised approximately 37% of Lake Community's loan portfolio.


   
                                       174
    

<PAGE>   184

DISTRIBUTION OF LOANS. The distribution of Lake Community's total loans by type
of loan as of the dates indicated is shown in the following table:

<TABLE>
<CAPTION>

(Unaudited)
(Dollars in thousands)
                                        September 30,                       December 31,
                                 -----------------------       --------------------------------------
 Type of Loan                        1998           1997           1997           1996           1995
- ---------------------------      --------       --------       --------       --------       --------
<S>                              <C>            <C>            <C>            <C>            <C>
Real estate                      $ 30,137       $ 32,218       $ 32,437       $ 34,938       $ 34,996
Commercial                          4,449          5,557          5,045          5,469          7,995
Consumer                            2,530          3,001          2,920          3,436          3,976
Agricultural                       18,026         14,059         13,942          9,409          7,363
                                 --------       --------       --------       --------       --------
           TOTAL                   55,142         54,835         54,344         53,252         54,330

Less:
  Deferred loans fees                (205)          (188)          (182)          (253)          (363)
  Allowance for loan losses        (1,160)          (893)          (952)          (908)        (1,128)
                                 --------       --------       --------       --------       --------

           TOTAL NET LOANS       $ 53,777       $ 53,754       $ 53,210       $ 52,091       $ 52,839
                                 ========       ========       ========       ========       ========
</TABLE>

COMMERCIAL LOANS. Commercial loans are made for the purpose of providing working
funds, financing the purchase of equipment or inventory and for other business
purposes. Such loans include loans with maturities ranging from 30 to 360 days,
and "term loans", which are loans with maturities normally ranging from one to
five years. Short term business loans are generally used to finance current
transactions and typically provide for periodic interest payments, with
principal being payable at maturity or periodically. Term loans normally provide
for monthly payments of both principal and interest.

Lake Community also extends lines of credit to business customers. On business
credit lines, Lake Community specifies a maximum amount which it stands ready to
lend to the customer during a specified period in return for which the customer
agrees to maintain its primary banking relationship with Lake Community. The
purpose for which such loans will be used and the security therefor, if any, are
generally determined before Lake Community's commitment is extended. Normally,
Lake Community does not make loan commitments in material amounts for periods in
excess of one year.

REAL ESTATE LOANS. Real estate loans are primarily made for the purpose of
purchasing, improving or constructing single family residences, and commercial
and industrial properties.

All of Lake Community's real estate construction loans consist of loans secured
by first trust deeds on the construction of owner-occupied single family
dwellings. Construction loans are generally written with terms of six to twelve
months and usually do not exceed a loan to appraised value ratio of 75 to 80%.

CONSUMER LOANS. Most consumer loans are short-term loans, made for a period of
up to five years. Automobile loans are normally made with up to a five-year
amortization period.



   
                                       175
    

<PAGE>   185

AGRICULTURAL LOANS. Agricultural loans are made for the purpose of providing
production loans and for financing the purchase of ag-equipment and ag-real
estate. Such loans are provided to well established ag-borrowers. Such loans
include loans with maturities ranging from 30 to 360 days, and "term" loans,
which are loans with maturities normally ranging from one to twenty years.
Production loans are used to finance current year crop expenses and typically
provide for periodic interest payments, with principal being payable at maturity
or periodically. Term loans normally provide for payments of both principal and
interest. Repayment may be monthly, quarterly, semi-annually or annually.

The outstanding balance of agricultural loans at September 30, 1998 increased
28% over the balance at September 30, 1997. Over the same period, the
outstanding balance of total loans increased 1%. This trend has existed over the
three-year period presented and represents a strategic decision by Lake
Community's management to increase the mix of agricultural loans in the
portfolio. Lake Community's management anticipates that this trend will continue
into the future.

MATURITY OF LOANS AND SENSITIVITY OF LOANS TO CHANGES IN INTEREST RATES. The
following table sets forth the amounts of loans outstanding as of September 30,
1998 and December 31, 1997 which, based on the remaining scheduled repayments of
principal, have the ability to be repriced or are due in less than one year, in
one to five years, or in more than five years.

<TABLE>
<CAPTION>

(Dollars in            Less than   One Year to    After
thousands)             One Year     Five Years  Five Years      Total
                       ---------   -----------  ----------     -------

<S>                     <C>          <C>          <C>          <C>
September 30, 1998
- ------------------
Fixed rate              $ 4,472      $17,552      $13,272      $35,296
Variable                 17,808        2,658            0       20,466
                        -------      -------      -------      -------

           Total        $22,280      $20,210      $13,272      $55,762
                        =======      =======      =======      =======
</TABLE>

<TABLE>
<CAPTION>

(Dollars in             Less than    One Year to    After
thousands)              One Year     Five Years   Five Years    Total
                        ---------    -----------  ----------   -------

<S>                     <C>          <C>          <C>          <C>
December 31, 1997
- -----------------
Fixed rate              $ 3,956      $19,541      $14,433      $37,930
Variable                  8,670        5,889        1,855       16,414
                        -------      -------      -------      -------

           Total        $12,626      $25,430      $16,288      $54,344
                        =======      =======      =======      =======

</TABLE>

   
                                       176
    

<PAGE>   186
LOAN COMMITMENTS. The following table shows Lake Community's loan commitments at
the dates indicated:

<TABLE>
<CAPTION>

                                     September 30,                    December 31,
                                  --------------------      ---------------------------------
(Dollars in thousands)               1998       1997         1997          1996        1995
                                  -------      -------      -------      -------     --------
<S>                               <C>          <C>          <C>          <C>          <C>
Commercial                        $ 1,705      $ 1,468      $ 3,793      $ 3,561      $ 4,303
Real estate                         3,631        2,496        3,097        2,325        2,320
Consumer                              434          469          402          434          449
Agricultural                        5,175        6,432        7,814        4,463        4,933
                                  -------      -------      -------      -------      -------
           Total commitments      $10,945      $10,865      $15,106      $10,783      $12,005
                                  =======      =======      =======      =======      =======
</TABLE>

Based upon prior experience and prevailing economic conditions, it is
anticipated that approximately 5% of the commitments at September 30, 1998 will
be exercised during 1998. All commercial commitments in the preceding table are
commitments to grant such loans. The commitments related to agricultural loans
are generally drawn down and repaid during the year.

SUMMARY OF LOAN LOSS EXPERIENCE. As a natural corollary to Lake Community's
lending activities, some loan losses are experienced. The risk of loss varies
with the type of loan being made and the creditworthiness of the borrower over
the term of the loan. To some extent, the degree of perceived risk is taken into
account in establishing the structure of, and interest rates and security for,
specific loans and for various types of loans. Lake Community attempts to
minimize its credit risk exposure by use of thorough loan application and
approval procedures.

Lake Community maintains a program of systematic review of its existing loans.
Loans are graded for their overall quality. Those loans which Lake Community's
management determines require further monitoring and supervision are segregated
and reviewed on a periodic basis. Significant problem loans are reviewed on a
monthly basis by Lake Community's Loan Committee. Loans for which it is probable
that Lake Community will be unable to collect all amounts due (including
principal and interest) are considered to be impaired. The recorded investment
in impaired loans totaled $661 thousand and $1.06 million at September 30, 1998
and December 31, 1997. In addition, when principal or interest on a loan is past
due 90 days or more, such loan is placed on nonaccrual status unless it is both
well-secured and in the process of collection. Loans totaling approximately
$1.18 million and $1.39 million were on nonaccrual status as of September 30,
1998 and December 31, 1997, respectively. Lake Community also classifies certain
loans on nonaccrual status as impaired. Accordingly, certain loans on nonaccrual
status at September 30, 1998 and December 31, 1997 are included with the
impaired loans disclosed above.

Financial difficulties encountered by certain borrowers may cause Lake Community
to restructure the terms of their loans to facilitate loan payments. As of
December 31, 1997 and 1996, Lake Community had no troubled debt restructured
loans. Interest foregone on nonaccrual loans and troubled debt restructurings
outstanding during the nine months ended September 30, 1998 and the years ended
December 31, 1997 and 1996 amounted to approximately $26 thousand, $76 thousand
and $103 thousand, respectively.


   
                                      177
    
<PAGE>   187

Lake Community charges off that portion of any loan which management or bank
examiners consider to represent a loss. A loan is generally considered by
management to represent a loss in whole or in part when an exposure beyond any
collateral value is apparent, servicing of the unsecured portion has been
discontinued or collection is not anticipated based on the borrower's financial
condition and general economic conditions in the borrower's industry. The
principal amount of any loan which is declared a loss is charged against Lake
Community's allowance for loan losses.

The following table sets forth the amount of loans on Lake Community's books
which were 30 to 89 days past due at the dates indicated:

<TABLE>
<CAPTION>

                                                    December 31,
                          September 30,       ------------------------
(Dollars in thousands)       1998              1997              1996
                            ------            ------            ------

<S>                         <C>               <C>               <C>
Commercial                  $   18            $   12            $  200
Real estate                    485               260             1,012
Consumer                        39                 2                61
                            ------            ------            ------
           Total            $  542            $  274            $1,273
                            ======            ======            ======

</TABLE>

The following table sets forth the amount of loans on Lake Community's books
which were on nonaccrual status at the dates indicated:

<TABLE>
<CAPTION>

                                                     December 31,
                          September 30,       ------------------------
(Dollars in thousands)       1998              1997              1996
                            ------            ------            ------

<S>                         <C>               <C>               <C>
Commercial                  $  125            $  136            $   29
Real estate                  1,059             1,253             1,394
Consumer                         0                 0                 2
                            ------            ------            ------
           Total            $1,184            $1,389            $1,425
                            ======            ======            ======

</TABLE>

   
                                      178
    

<PAGE>   188

The following table summarizes Lake Community's loan loss experience for the
periods indicated:

<TABLE>
<CAPTION>

                                       Nine Months Ended
(Unaudited)                             September 30,                           Year Ended December 31,
                                  ---------------------------         --------------------------------------------
(Dollars in thousands)               1998            1997                1997             1996             1995
                                  ----------       ----------         ----------        ----------      ----------

<S>                                <C>               <C>               <C>               <C>               <C>
BALANCES
Loans:
  Average loans                    $ 53,902          $ 55,273          $ 55,171          $ 56,608          $ 53,941
  Loans at end of period             55,142            54,835            54,344            53,252            54,330
Loans charged off                       (85)             (315)             (257)             (739)             (147)
Recoveries of loans
 previously charged off                  23                30                38                42                47
Net loans charged off                   (62)             (285)             (219)             (697)             (100)
Allowance for loan losses             1,160               893               952               908             1,128
Provisions for loan losses              270               270               263               477               210
Ratios(1):
Net loan charge-offs to
 average loans                         0.15%             0.69%             0.40%             1.23%             0.19%
Net loan charge-offs to
 loans at end of period                0.15%             0.69%             0.40%             1.31%             0.18%
Allowance for loan
 losses to average loans               2.15%             1.62%             1.73%             1.60%             2.09%
Allowance for loan losses
 to loans at end of period             2.11%             1.63%             1.75%             1.70%             2.08%
Net loan charge-offs to
 allowance for  loan losses            7.13%            42.55%            23.00%            76.76%             8.87%
Net loan charge-offs to
 provision for loan losses            22.96%           105.56%            83.27%           146.12%            47.62%
</TABLE>

- ---------

(1)     Annualized for the nine months ended September 30, 1998 and 1997.

Lake Community's allowance for loan losses is to provide for loan losses which
can be reasonably anticipated. The allowance for loan losses is established
through charges to operating expenses in the form of provisions for loan losses.
Provisions for possible loan losses amounted to $263 thousand in 1997, $477
thousand in 1996 and $270 thousand for the first nine months of 1998. The
provision increased in 1996, 1997 and the first nine months of 1998 as a result
of identified losses in the loan portfolio totaling $739 thousand, $257 thousand
and $85 thousand, respectively, which were charged-off. Actual loan losses or
recoveries are charged or credited, respectively, directly to the allowance for
loan losses. The amount of the allowance is determined by the management of Lake
Community. Among the factors considered in determining the allowance for loan
losses are the current financial condition of Lake Community's borrowers and the
value of the security, if any, for their loans. Estimates of future economic
conditions and their impact on various industries and individual borrowers are
also taken into consideration, as are Lake Community's historical loan loss
experience and reports of banking regulatory authorities. Because these
estimates and evaluations are primarily judgmental factors, no assurance can be
given that Lake Community may not sustain loan losses

   
                                       179
    

<PAGE>   189
substantially higher in relation to the size of the allowance for loan losses or
that subsequent evaluation of the loan portfolio may not require substantial
changes in such allowance.

At December 31, 1997, 1996 and 1995, the allowance was 1.75%, 1.70%, and 2.08%
of the loans then outstanding, respectively. At September 30, 1998, the
allowance was 2.11% of the loans then outstanding. Although the current level of
the allowance is deemed adequate by management, future provisions will be
subject to continuing reevaluation of risks in the loan portfolio.

Management of Lake Community reviews with the Board of Directors the adequacy of
the allowance for loan losses on a monthly basis and adjusts the loan loss
provision upward where specific items reflect a need for such an adjustment.
Management of Lake Community charged off approximately $257 thousand in 1997,
$739 thousand in 1996 and approximately $85 thousand in the first nine months of
1998. Recoveries of loans previously charged off were $38 thousand in 1997, $42
thousand in 1996 and $23 thousand during the first nine months of 1998.
Charge-offs decreased in 1998 and management does not believe there has been any
significant deterioration in Lake Community's loan portfolio. Management also
believes that Lake Community has adequately reserved for all individual items in
its portfolio which may result in a loss material to Lake Community.

INVESTMENT SECURITIES. Lake Community has invested $20.10 million in federal
instruments, securities issued by states and political subdivisions, other debt
securities and bank certificates of deposit, which yielded approximately 5.84%
per annum during the first nine months of 1998. Lake Community's present
investment policy is to invest excess funds in federal funds, certificates of
deposits in financial institutions, U.S. Treasuries, securities issued by the
U.S. Government and securities issued by states and political subdivisions.


   
                                      180
    
<PAGE>   190

INTEREST RATES AND DIFFERENTIALS. Certain information concerning
interest-earning assets and interest-bearing liabilities and yields thereon is
set forth in the following table. Amounts outstanding are daily average
balances:

<TABLE>
<CAPTION>

                                          Nine Months Ended
(Dollars in thousands)                     September 30,(1)                   Year Ended December 31,
(Unaudited)                              -----------------------      -----------------------------------------
                                          1998            1997          1997              1996           1995
                                        ----------     --------       ---------        ---------       --------

<S>                                     <C>             <C>             <C>             <C>             <C>
Interest-earning assets:
  Interest-earning deposits:
           Average outstanding          $ 5,024         $ 3,654         $ 3,870         $ 3,432         $ 2,644
           Average yield                   5.92%           6.02%           6.02%           5.77%           6.05%
           Interest income              $   223         $   165         $   233         $   198         $   160
  Federal funds sold:
           Average outstanding          $ 4,510         $ 3,044         $ 3,751         $ 3,288         $ 4,008
           Average yield                   5.44%           5.39%           5.42%           5.11%           5.73%
           Interest income              $   184         $   123         $   203         $   168         $   230
  Investment securities:
           Average outstanding          $11,229         $ 9,347         $ 9,700         $12,658         $14,218
           Average yield                   5.90%           6.19%           6.13%           6.14%           5.76%
           Interest income              $   497         $   434         $   595         $   777         $   819
  Loans:
           Average outstanding          $53,903         $55,273         $55,171         $56,608         $53,941
           Average yield                   9.73%          10.00%          10.02%          10.08%          10.74%
           Interest income              $ 3,935         $ 4,146         $ 5,529         $ 5,704         $ 5,793
  Total interest-earning assets:
           Average outstanding          $74,666         $71,318         $72,492         $75,986         $74,811
           Average yield                   8.64%           9.10%           9.05%           9.01%           9.36%
           Interest income              $ 4,839         $ 4,868         $ 6,560         $ 6,847         $ 7,002
Interest-bearing liabilities:
  NOW and money market
   demand accounts:
           Average outstanding          $13,014         $13,502         $13,585         $14,889         $15,046
           Average yield                   2.41%           2.33%           2.34%           2.20%           2.63%
           Interest expense             $   235         $   236         $   318         $   328         $   395
  Savings deposits:
           Average outstanding          $12,507         $13,586         $13,356         $14,096         $14,233
           Average yield                   2.24%           2.25%           2.25%           2.19%           2.77%
           Interest expense             $   210         $   229         $   301         $   309         $   395
  Time deposits:
           Average outstanding          $36,751         $34,749         $35,374         $38,706         $34,256
           Average yield                   5.34%           5.49%           5.50%           5.70%           6.61%
           Interest expense             $ 1,471         $ 1,430         $ 1,943         $ 2,208         $ 2,266
  Total interest-bearing
   liabilities:
           Average outstanding          $62,272         $61,837         $62,315         $67,691         $63,535
           Average yield                   4.10%           4.09%           4.11%           4.20%           4.81%
           Interest expense             $ 1,916         $ 1,895         $ 2,562         $ 2,845         $ 3,056

Net interest income                     $ 2,923         $ 2,973         $ 3,998         $ 4,002         $ 3,946
  Average net yield of
   interest-earning assets                 5.22%           5.56%           5.52%           5.27%           5.27%
</TABLE>

- --------


(1)     Nine month yields have been annualized.


   
                                      181
    
<PAGE>   191

LIQUIDITY MANAGEMENT. Lake Community has a federal funds line of credit with its
correspondent bank, Union Bank of California, of $2.00 million. When Lake
Community has excess funds over its reserve requirements or short-term liquidity
needs, Lake Community increases/or decreases its securities investments and/or
sells federal funds.

Policies have been developed by Lake Community's management and approved by the
Board of Directors which establish guidelines for the investments and liquidity
of Lake Community. These policies include an Investment Policy and an Asset/
Liability Policy. The goals of these policies are to provide liquidity to meet
the financial requirements of Lake Community's customers, maintain adequate
reserves as required by regulatory agencies and maximize earnings of Lake
Community.

The following table shows Lake Community's average deposits for each of the
periods indicated below, based upon average daily balances:

<TABLE>
<CAPTION>

                                    Nine Months Ended September 30,
                          ---------------------------------------------------
(Dollars in thousands)              1998                        1997
(Unaudited)               ------------------------    -----------------------

                          Average         Percent     Average         Percent
                          Balance         of Total    Balance        of Total
                          -------        -------       -------        -------

<S>                       <C>              <C>         <C>              <C>
Demand deposits           $12,201          16.38%      $10,716          14.77%
NOW accounts                8,996          12.08%        9,362          12.90%
Savings deposits           12,507          16.79%       13,586          18.73%
Money market
 deposits                   4,018           5.40%        4,140           5.71%
Time deposits              36,751          49.35%       34,749          47.89%
                          -------                      -------
    Total deposits        $74,473                      $72,553
                          =======                      =======
</TABLE>

<TABLE>
<CAPTION>

                                                             Year Ended December 31,
                               --------------------------------------------------------------------------------
(Dollars in thousands)                  1997                          1996                          1995
                               ---------------------------  ----------------------       ----------------------

(Unaudited)                    Average       Percent       Average          Percent      Average        Percent
                               Balance       of Total      Balance          of Total     Balance        of Total
                               -------        -------       -------        -------       -------        --------

<S>                            <C>              <C>         <C>              <C>         <C>             <C>
Demand deposits                $11,184          15.22%      $ 9,883          12.74%      $ 8,751         12.10%
NOW accounts                     9,402          12.79%       10,080          12.99%        9,837         13.61%
Savings deposits                13,356          18.17%       14,096          18.17%       14,233         19.69%
Money market
 deposits                        4,183           5.69%        4,809           6.20%        5,209          7.21%
Time deposits                   35,374          48.13%       38,706          49.90%       34,256         47.39%
                               -------                      -------                      -------
    Total deposits             $73,499                      $77,574                      $72,286
                               =======                      =======                      ======
</TABLE>

LIABILITY MANAGEMENT. It is management's policy to maintain the maturities of a
majority of its certificates of deposit in denominations of $100,000 or more to
less than one year. The maturities of such time certificates of deposit
("TCD's"), as well as other time deposits, were as follows:

<TABLE>
<CAPTION>

                                September 30, 1998           December 31, 1997
                             ------------------------      -----------------------
                               TCD's         Other          TCD's            Other
(Dollars in thousands)         over           Time           over            Time
(Unaudited)                  $100,000        Deposits      $100,000        Deposits
                             --------        --------      --------        --------

<S>                           <C>            <C>            <C>            <C>
Less than three months        $ 3,108        $11,078        $ 1,550        $10,030
Over three months
 through twelve months          2,033         15,401          3,619         18,488
Over twelve months
 through five years               647          4,326            525          3,088
                              -------        -------        -------        -------
           Total              $ 5,788        $30,805        $ 5,694        $31,606
                              =======        =======        =======        =======
</TABLE>

While the deposits of Lake Community may fluctuate up and down somewhat with
local and national economic conditions, management of Lake Community does not
believe that such


   
                                       182
    
<PAGE>   192
deposits, or the business of Lake Community in general, are seasonal in nature.
Liability management is monitored by Lake Community's Board of Directors which
meets monthly.

REGULATORY MATTERS.

Capital Adequacy. Lake Community is subject to the FDIC's regulations governing
capital adequacy for nonmember banks. Additional capital requirements may be
imposed on banks based on market risk.

The FDIC has established capital adequacy regulations for nonmember banks, which
set total capital requirements and define capital in terms of "core capital
elements," or Tier 1 capital and "supplemental capital elements," or Tier 2
capital. At least fifty percent (50%) of the qualifying total capital base must
consist of Tier 1 capital. The maximum amount of Tier 2 capital that may be
recognized for risk-based capital purposes is limited to one-hundred percent
(100%) of Tier 1 capital, net of goodwill.

Nonmember banks are required to maintain a minimum ratio of qualifying total
capital to risk-weighted assets of eight percent (8%), at least one-half of
which must be in the form of Tier 1 capital. Risk-based capital ratios are
calculated with reference to risk-weighted assets, including both on and
off-balance sheet exposures, which are multiplied by certain risk weights
assigned by the FDIC to those assets.

The FDIC has established a minimum leverage ratio of three percent (3%) Tier 1
capital to total assets for nonmember banks that have received the highest
composite regulatory rating and are not anticipating or experiencing any
significant growth. All other institutions are required to maintain a leverage
ratio of at least 100 to 200 basis points above the 3% minimum for a minimum of
four percent (4%) or five percent (5%).

Set forth below are Lake Community's risk-based and leverage capital ratios as
of September 30, 1998 and December 31, 1997:

RISK-BASED CAPITAL RATIOS

<TABLE>
<CAPTION>

                               SEPTEMBER 30, 1998
                               ------------------

                                           AMOUNT               RISK-BASED RATIO
                                         -----------            ----------------
<S>                                      <C>                    <C>
Tier 1 capital                           $ 9,256,046                   13.5%
Total capital                            $10,110,225                   14.8%
Total capital minimum requirement        $ 5,466,744                    8.0%
Excess                                   $ 4,643,481
Total risk-weighted assets               $68,334,306

</TABLE>

   
                                       183
    

<PAGE>   193
<TABLE>
<CAPTION>

                                   DECEMBER 31, 1997
                                   -----------------
                                        AMOUNT              RISK-BASED RATIO
                                        ------              ----------------
<S>                                  <C>                    <C>
Tier 1 capital                       $ 8,561,600                  14.5%
Total capital                        $ 9,300,000                  15.8%
Total capital minimum requirement    $ 4,708,700                   8.0%
Excess                               $ 4,591,300
Total risk-weighted assets           $58,858,900
</TABLE>

<TABLE>
<CAPTION>

LEVERAGE RATIO
                                 SEPTEMBER 30, 1998
                                 ------------------

                                      AMOUNT              LEVERAGE RATIO(1)
                                      ------              -----------------
<S>                                <C>                    <C>
Tier 1 capital                     $ 9,256,046                  11.0%
Minimum leverage ratio             $ 3,363,250                   4.0%
Excess                             $ 5,892,796
Average assets                     $84,081,250(2)
</TABLE>

- -------

(1) Tier 1 capital to adjusted total average assets.

(2) As adjusted for intangibles and FAS 115.

<TABLE>
<CAPTION>
                               DECEMBER 31, 1997
                               -----------------

                                    AMOUNT                   LEVERAGE RATIO(1)
                                    ------                   -----------------
<S>                             <C>                          <C>
Tier 1 capital                  $ 8,561,600                       10.4%
Minimum leverage ratio          $ 3,299,300                        4.0%
Excess                          $ 5,262,300
Average assets                  $82,481,900(2)
</TABLE>

- -------

(1) Tier 1 capital to adjusted total average assets.

(2) As adjusted for intangibles and FAS 115.

The risk-based capital ratio discussed above focuses principally on broad
categories of credit risk, and may not take into account many other factors that
can affect a bank's financial condition. These factors include overall interest
rate risk exposure; liquidity, funding and market risks; the quality and level
of earnings; concentrations of credit risk; certain risks arising from
nontraditional activities; the quality of loans and investments; the
effectiveness of loan and investment policies; and management's overall ability
to monitor and control financial and operating risks, including the risk
presented by concentrations of credit and nontraditional activities. The FDIC
has addressed many of these areas in related rule-making proposals and under
FDICIA (as defined below), some of which are discussed herein. In addition to
evaluating

   
                                       184
    
<PAGE>   194
capital ratios, an overall assessment of capital adequacy must take account of
each of these other factors including, in particular, the level and severity of
problem and adversely classified assets. For this reason, the final supervisory
judgment on a bank's capital adequacy may differ significantly from the
conclusions that might be drawn solely from the absolute level of the bank's
risk-based capital ratio. In light of the foregoing, the FDIC has stated that
banks generally are expected to operate above the minimum risk-based capital
ratio. Banks contemplating significant expansion plans, as well as those
institutions with high or inordinate levels of risk, should hold capital
commensurate with the level and nature of the risks to which they are exposed.

Recently adopted regulations by the federal banking agencies have revised the
risk-based capital standards to take adequate account of concentrations of
credit and the risks of nontraditional activities. Concentrations of credit
refers to situations where a lender has a relatively large proportion of loans
involving one borrower, industry, location, collateral or loan type.
Nontraditional activities are considered those that have not customarily been
part of the banking business but that start to be conducted as a result of
developments in, for example, technology or financial markets. The regulations
require institutions with high or inordinate levels of risk to operate with
higher minimum capital standards. The federal banking agencies also are
authorized to review an institution's management of concentrations of credit
risk for adequacy and consistency with safety and soundness standards regarding
internal controls, credit underwriting or other operational and managerial
areas. In addition, the agencies have promulgated guidelines for institutions to
develop and implement programs for interest rate risk management, monitoring and
oversight.

Further, the banking agencies recently have adopted modifications to the
risk-based capital regulations to include standards for interest rate risk
exposures. Interest rate risk is the exposure of a bank's current and future
earnings and equity capital arising from movements in interest rates. While
interest rate risk is inherent in a bank's role as financial intermediary, it
introduces volatility to bank earnings and to the economic value of the bank.
The banking agencies have addressed this problem by implementing changes to the
capital standards to include a bank's exposure to declines in the economic value
of its capital due to changes in interest rates as a factor that the banking
agencies will consider in evaluating an institution's capital adequacy. Bank
examiners will consider a bank's historical financial performance and its
earnings exposure to interest rate movements as well as qualitative factors such
as the adequacy of a bank's internal interest rate risk management.

Finally, institutions with significant trading activities must measure and hold
capital for exposure to general market risk arising from fluctuations in
interest rates, equity prices, foreign exchange rates and commodity prices and
exposure to specific risk associated with debt and equity positions in the
trading portfolio. General market risk refers to changes in the market value of
on-balance-sheet assets and off-balance-sheet items resulting from broad market
movements. Specific market risk refers to changes in the market value of
individual positions due to factors other than broad market movements and
includes such risks as the credit risk of an instrument's issuer. The additional
capital requirements apply effective January 1, 1998 to institutions with
trading assets and liabilities equal to 10% or more of total assets or trading
activity of $1 billion or more. The federal banking agencies may apply the
market risk regulations on a case by case basis to institutions not meeting the
eligibility criteria if necessary for safety and soundness reasons.

   
                                       185
    

<PAGE>   195
In connection with the recent regulatory attention to market risk and interest
rate risk, the federal banking agencies will evaluate an institution in its
periodic examination on the degree to which changes in interest rates, foreign
exchange rates, commodity prices or equity prices can affect a financial
institution's earnings or capital. In addition, the agencies will focus in the
examination on an institution's ability to monitor and manage its market risk,
and will provide management with a clearer and more focused indication of
supervisory concerns in this area.

In certain circumstances, the FDIC may determine that the capital ratios for an
FDIC-insured bank must be maintained at levels which are higher than the minimum
levels required by the guidelines or the regulations. A bank which does not
achieve and maintain the required capital levels may be issued a capital
directive by the FDIC to ensure the maintenance of required capital levels.

Dividends. Dividends payable by Lake Community are restricted under California
law to the lesser of Lake Community's retained earnings, or Lake Community's net
income for the latest three fiscal years, less dividends previously declared
during that period, or, with the approval of the DFI, to the greater of the
retained earnings of Lake Community, the net income of Lake Community for its
last fiscal year or the net income of Lake Community for its current fiscal
year.

The FDIC has broad authority to prohibit a bank from engaging in banking
practices which it considers to be unsafe or unsound. It is possible, depending
upon the financial condition of the bank in question and other factors, that the
FDIC may assert that the payment of dividends or other payments by the bank is
considered an unsafe or unsound banking practice and therefore, implement
corrective action to address such a practice.

In addition to the regulations concerning minimum uniform capital adequacy
requirements discussed above, the FDIC has established guidelines regarding the
maintenance of an adequate allowance for loan and lease losses. Therefore, the
future payment of cash dividends by Lake Community will generally depend, in
addition to regulatory constraints, upon Lake Community's earnings during any
fiscal period, the assessment of Lake Community's Board of Directors of the
capital requirements of the institution and other factors, including the
maintenance of an adequate allowance for loan and lease losses.

Reserve Balances. Lake Community maintains average reserve balances with the
FRB. At September 30, 1998 and December 31, 1997, Lake Community's qualifying
balance with the FRB was approximately $554 thousand and $640 thousand,
respectively, consisting of vault cash and balances.

   
Year 2000 Readiness Disclosures. The "Year 2000 issue" relates to the fact that
many computer programs use only two digits to represent a year, such as "98" to
represent "1998," which means that in the Year 2000 such programs could
incorrectly treat the Year 2000 as the year 1900. This issue has grown in
importance as the use of computers and microchips has become more pervasive
throughout the economy, and interdependencies between systems have multiplied.
The issue must be recognized as a business problem, rather than simply a
computer problem, because of the way its effects could ripple through the
economy. Lake Community could be materially and adversely affected either
directly or indirectly by the Year 2000 issue. This could happen if any of its
critical computer systems or equipment containing preprogrammed computer 
    

   
                                       186
    

<PAGE>   196
   
chips fail, if the local infrastructure (electric power, phone system, or water
system) fails, if its significant vendors are adversely impacted, or if its
borrowers or depositors are adversely impacted by their internal systems or
those of their customers or suppliers. Failure of Lake Community to complete
testing and renovation of its critical systems on a timely basis could have a
material adverse effect on Lake Community's financial condition and results of
operations, as could Year 2000 problems faced by others with whom Lake Community
does business.
    

Federal banking regulators have responsibility for supervision and examination
of banks to determine whether each institution has an effective plan for
identifying, renovating, testing and implementing solutions for Year 2000
processing and coordinating Year 2000 processing capabilities with its
customers, vendors and payment system partners. Bank examiners are also required
to assess the soundness of a bank's internal controls and to identify whether
further corrective action may be necessary to assure an appropriate level of
attention to Year 2000 processing capabilities.

Lake Community has a written plan to address Lake Community's risks associated
with the impact of the Year 2000. The plan directs Lake Community's Year 2000
compliance efforts under the framework of a five-step program mandated by the
Federal Financial Institutions Examination Council ("FFIEC"). The FFIEC'S
five-step program consists of five phases: awareness, assessment, renovation,
validation and implementation. In the awareness phase, which Lake Community has
completed, the Year 2000 problem is defined and executive level support for the
necessary resources to prepare Lake Community for Year 2000 compliance is
obtained. In the assessment phase, which Lake Community has also completed, the
size and complexity of the problem and details of the effort necessary to
address the Year 2000 issues are assessed. Although the awareness and assessment
phases are completed, Lake Community continues to evaluate new issues as they
arise. In the renovation phase, which Lake Community has substantially
completed, the required incremental changes to hardware and software components
are tested. In the validation phase, which Lake Community has also substantially
completed, the hardware and software components are tested. In the
implementation phase changes to hardware and components are brought on line. The
implementation phase for critical systems is approximately 80% completed.

Lake Community is utilizing both internal and external resources to identify,
correct or reprogram, and test its systems for Year 2000 compliance. Lake
Community has identified 40 vendors and 32 software applications which
management believes are material to Lake Community's operations. Based on
information received from its vendors and testing results, Lake Community
believes approximately 61% of such vendors are Year 2000 compliant as of
December 31, 1998. Testing of the critical system applications for the core
banking product provided by Lake Community's primary vendor was completed and
the results verified during December 1998 and January 1999, except for testing
of Lake Community's general ledger and accounts payable, which will be completed
by March 31, 1999. The core banking product includes software solutions for
general ledger, accounts payable, automated clearing house, certificates of
deposit and individual retirement accounts, commercial, mortgage and installment
loans, checking and savings accounts, proof of deposit applications and
ancillary support products.

   
    

   
                                       187
    

<PAGE>   197
   
Lake Community has identified four vendors for which testing has not been
completed. All testing will be completed by March 31, 1999. Based on 
information received from its vendors and testing results, Lake Community 
believes approximately 79% of such vendors are Year 2000 compliant as of 
December 31, 1998, and that the remaining 21% will be Year 2000 compliant by 
June 30, 1999.
    

Lake Community is also making efforts to ensure that its customers, particularly
its significant customers, are aware of the Year 2000 problem. Lake Community
has sent Year 2000 correspondence to its significant deposit and loan customers.
A customer of Lake Community is deemed significant if the customer possesses any
of the following characteristics:

- -       Total indebtedness to Lake Community of $500,000 or more.

- -       The customer's business is dependent on the use of high technology
        and/or the electronic exchange of information.

- -       The customer's business is dependent on third party providers of data
        processing services or products.

- -       An average ledger deposit balance greater than $250,000.

   
Lake Community has amended its credit authorization documentation to include
consideration of the Year 2000 problem. Lake Community assesses its significant
customer's Year 2000 readiness and assigns the customer an assessment of "low,"
"medium" or "high" risk. Risk evaluation of its significant customers was
substantially completed by December 31, 1998. Any depositor determined to have a
high risk is scheduled for an evaluation by Lake Community every 90 days until
the customer can be assigned a low risk assessment. Any depositor determined by
Lake Community to have medium risk is scheduled for a follow-up evaluation by
March 31, 1999. Risk evaluation of Lake Community's significant customers was
substantially completed by December 31, 1998, and it was determined that one
customer with a loan totaling $794,190 was "high risk" and nine (9) customers
with loans totaling $2,681,277 were "medium risk." Borrowers in the high and
medium risk categories are reviewed quarterly to determine the status of the
borrower's Year 2000 progress. Lake Community's customer evaluation presently
indicates that all borrowers in the medium and high risk categories have a Year
2000 budget and implementation dates in place.
    

Because of the range of possible issues and large number of variables involved,
it is impossible to quantify the total potential cost of Year 2000 problems or
to determine Lake Community's worst-case scenario in the event Lake Community's
Year 2000 remediation efforts or the efforts of those with whom it does business
are not successful. In order to deal with the uncertainty associated with the
Year 2000 problem, Lake Community has developed a contingency plan to address
the possibility that efforts to mitigate the Year 2000 risk are not successful
either in whole or part. These plans include manual processing of information
for critical information technology systems, utilities, and increased cash on
hand. The contingency plans are expected to be completed by March 31, 1999,
after which the appropriate implementation training is scheduled to take place.

   
As of September 30, 1998, Lake Community has incurred $30,000 in Year 2000
costs, which have been expensed as incurred. Year 2000-related costs have been
funded from the continuing 
    


   
                                       188
    

<PAGE>   198
   
operations of Lake Community. Lake Community estimates that its costs to
complete Year 2000 compliance will be approximately $25,000 if the Western
Sierra/Lake Community Merger is completed. This estimate includes the costs of
internal staff, consultants, customer awareness programs, and contingency plans.
However, in the event the Western Sierra/Lake Community Merger is not completed,
Lake Community estimates that its costs to complete Year 2000 compliance will be
approximately $150,000 This estimate includes additional costs for upgrading
hardware and software. These estimate do not include the time that internal
staff are devoting to testing programming changes. Testing is not expected to
add significant incremental costs.
    

Quantitative and Qualitative Disclosures About Market Risk. Market risk is the
risk of loss from adverse changes in market prices and rates. Lake Community's
market risk arises primarily from interest rate risk inherent in its loan and
deposit functions and management actively monitors and manages this interest
rate risk exposure. Lake Community does not have any market risk sensitive
instruments entered into for trading purposes. Management uses several different
tools to monitor its interest rate risk. One measure of exposure to interest
rate risk is gap analysis. A positive gap for a given period means that the
amount of interest-earning assets maturing or otherwise repricing within such
period is greater than the amount of interest-bearing liabilities maturing or
otherwise repricing within the same period. Lake Community has a positive gap.
In addition, Lake Community uses interest rate shock simulations to estimate the
effect of certain hypothetical rate changes. Based upon Lake Community's shock
simulations, net interest income is expected to rise with increasing rates and
fall with declining rates.

Lake Community's positive gap is the result of a significant portion of Lake
Community's loans having terms greater than five years on the asset side. On the
liability side, the majority of the Lake Community's time deposits have average
terms of approximately six months while savings accounts and other
interest-bearing transaction accounts are recorded for gap analysis in the next
day to six month category because they do not have a contractual maturity date.

Taking into consideration that savings accounts and other interest-bearing
transaction accounts typically do not react immediately to changes in interest
rates, management has taken the following steps to manage its positive gap
position. Lake Community has reduced interest rates on time deposits and focused
on increasing noninterest-bearing deposits and floating rate loans. In addition,
Lake Community holds all of its investments in the available-for-sale category
in order to maintain flexibility in matching its investments with repricing
changes which occur in its liabilities.

The following table sets forth the distribution of repricing opportunities of
Lake Community's interest-earning assets and interest-bearing liabilities, the
interest rate sensitivity gap (i.e. interest rate sensitive assets less interest
rate sensitive liabilities), the cumulative interest rate sensitivity gap and
the cumulative gap as a percentage of total interest-earning assets as of
December 31, 1997. The table also sets forth the time periods during which
interest-earning assets and interest-bearing liabilities will mature or may
reprice in accordance with their contractual terms. The interest rate
relationships between the repriceable assets and repriceable liabilities are not
necessarily constant. The table should, therefore, be used only as a guide as to
the possible effect changes in interest rates might have on the net margins of
Lake Community.


   
                                       189
    

<PAGE>   199
<TABLE>
<CAPTION>

                                                                                     December 31, 1997
                                                                ----------------------------------------------------------------
                                                                            Over Six
                                                                             Months        Over
                                                                 Next Day   Through       One Year
(Dollars in thousands)                                             to Six    Twelve       Through           Over
(Unaudited)                                                       Months     Months      Five Years       Five Years       Total
                                                                --------    -------      ----------       ----------    --------
<S>                                                             <C>        <C>           <C>              <C>           <C>

Assets:
           Federal funds sold                                   $  4,000                                                $  4,000
           Interest-bearing deposits                               2,081     $  2,377     $     99                         4,557
           Investment securities                                   4,986          821        1,349          $  4,820      11,976
           Loans                                                  15,784        5,105        7,669            25,786      54,344
                                                                --------     --------     --------          --------    --------
                      Total interest-earning assets               26,851        8,303        9,117            30,606      74,877
                                                                --------     --------     --------          --------    --------
Liabilities:
           Savings deposits(1)                                    25,811                                                  25,811
           Time deposits                                          24,929        8,757        2,161             1,454      37,301
                                                                --------     --------     --------          --------    --------
                      Total interest-bearing liabilities          50,740        8,757        2,161             1,454      63,112
                                                                --------     --------     --------          --------    --------

Net (interest-bearing liabilities)
 interest-earning assets                                        $(23,889)    $   (454)    $  6,956          $ 29,152    $ 11,765
                                                                ========     ========     ========          ========    ========

Cumulative net (interest-bearing liabilities)
 interest-earning assets ("GAP")                                $(23,889)    $(24,343)    $(17,387)         $ 11,765
                                                                ========     ========     ========         ========

Cumulative GAP as a percentage of
 total interest-earning assets                                    (31.90)%     (32.51)%     (23.22)%          15.71%
                                                                ========     ========     ========         ========
</TABLE>

- --------

(1) Savings deposits include interest-bearing transaction accounts.


   
                                       190
    

<PAGE>   200
The following table sets forth the distribution of the expected maturities of
Lake Community's interest-earning assets and interest-bearing liabilities as of
December 31, 1997 as well as the fair value of these instruments. Expected
maturities are based on contractual agreements. Savings accounts and
interest-bearing transaction accounts, which have no stated maturity, are
included in the 1998 maturity category.

                               EXPECTED MATURITIES

<TABLE>
<CAPTION>
(Dollars in thousands)
(Unaudited)                            1998         1999       2000        2001        2002    Thereafter    Total     Fair Value
                                      -------     -------     -------     -------     -------  ----------   -------    ----------
<S>                                   <C>         <C>         <C>         <C>         <C>      <C>          <C>        <C>
Federal funds sold                     $ 4,000                                                              $ 4,000      $ 4,000
           Weighted average rate          5.41%                                                                5.41%            
Interest-bearing deposits in banks     $ 4,458     $   99                                                   $ 4,557      $ 4,557
           Weighted average rate          6.12%      6.28%                                                     6.12%            
Investment securities(1)               $ 1,489     $  453      $1,789      $  753      $  988    $ 6,504    $11,976      $11,976
           Weighted average rate          5.26%      5.18%       5.90%       6.26%       5.99%      6.32%      6.13%            
Fixed rate loans                       $ 3,956     $4,758      $6,511      $5,516      $2,756    $14,433    $37,930      $38,693
           Weighted average rate         10.28%      9.57%       9.72%       9.54%       9.22%      9.21%      9.37%            
Variable rate loans(2)                 $ 8,670     $1,545      $  753      $2,246      $1,345    $ 1,855    $16,414      $16,414
           Weighted average rate         11.25%     11.00%      10.55%      10.25%       9.85%      9.75%     10.65%            

Total interest-bearing assets          $22,573     $6,855      $9,053      $8,515      $5,089    $22,792    $74,877      $75,640

Savings deposits(3)                    $25,811                                                              $25,811      $25,811
           Weighted average rate          2.30%                                                                2.30%            
Time deposits                          $33,687     $2,130      $1,484                                       $37,301      $37,592
           Weighted average rate          5.27%      5.31%       5.49%                                         5.35%            
Total interest-bearing liabilities     $59,498     $2,130      $1,484                                       $63,112      $63,403
</TABLE>

- -------------

(1)     Interest rates on tax exempt obligations have not been tax effected to
        include the related tax benefits in calculating the weighted average
        yield.

(2)     All variable rate loans reprice in one year or less.

(3)     Savings deposits include interest-bearing transaction accounts.


   
                                       191
    

<PAGE>   201

MANAGEMENT

INFORMATION ON DIRECTORS AND EXECUTIVE OFFICERS. The following table sets forth
certain information, as of February 1, 1999, with respect to those persons who
are directors and executive officers of Lake Community:

<TABLE>
<CAPTION>

                                                                   Year First
                                                                   Appointed
                                                                   Director or
                 Name                         Age                     Officer                                 Title
- ---------------------------------------       ---                  --------------            -------------------------------------
<S>                                           <C>                  <C>                       <C>
Donald L. Browning, M.D.                      66                       1984                  Director
F. Ilene Dumont                               46                       1995                  Director
John H. Helms                                 73                       1984                  Director
Billie L. Holmes                              66                       1984                  Vice Chairperson of the Board
May G. Noble                                  79                       1984                  Director
Douglas A. Nordell                            50                       1998                  President, Chief Executive Officer and
                                                                                             Director of Lake Community.
Brandt Peterson                               53                       1993                  Senior Vice President and Senior Loan
                                                                                             Officer of Lake Community.
Howard ("Bud") Van Lente                      72                       1984                  Chairman of the Board
</TABLE>

The business experience of each of the directors and executive officers for the
past five years is described below.

DONALD L. BROWNING has been a physician in general practice in Lakeport since
1961. Dr. Browning is a founding organizer and director of Lake Community. Dr.
Browning is also Chairman of Lake Community's Audit Committee.

F. ILENE DUMONT has been the Executive Director of People Services, Inc., a
non-profit corporation which serves persons with disabilities, since 1981. Born
and raised in Lake County, Mrs. Dumont has pursued a career in human services
since 1974. Among her numerous civic activities, Mrs. Dumont is a member of the
Social Services Transportation Advisory Committee to the City and County
Planning Counsel, a member of the Area Planning Council Transit Study and a
co-founder of the Lakeport Enhanced Education Foundation.

JOHN H. HELMS founded Helms Petroleum Products Company in Lakeport in 1966. Mr.
Helms has been in the petroleum distribution and marketing business for
thirty-two years. His company has owned Two Jack's Mini Stop Stores since 1978,
the Helms General Tire Company since 1970 and Lampson Field Chevron Service
since 1981. In addition, Mr. Helms is a founding organizer and director of Lake
Community.



   
                                       192
    

<PAGE>   202
BILLIE L. HOLMES has lived in Lake County for the past thirty years. She owned
and operated the Holiday Harbor marina-resort from 1960 to 1986. Mrs. Holmes
also raised Polled Herefords and was the owner/operator of Porky's Restaurant in
Lucerne. Mrs. Holmes is a founding organizer and director of Lake Community and
currently serves as the Chairperson of Lake Community's Loan Committee and as
the Vice Chairperson of the Board of Directors.

MAY G. NOBLE has been a Lake County resident since 1954 and is President of
Noble Realty, Inc. She holds the National Realtors Marketing Institute
designation of CRB (Certified Residential Broker) and the California Association
of Realtors designation of GRI (Graduate Realtors Institute). Since 1960 she has
operated a residential and commercial construction development firm with her
late husband Fred. She and her late husband also developed and operated the
Cottage City Mobile Home Park in Lucerne, and more recently Meadow Pointe Mobile
Home Park in Upper Lake. Mrs. Noble is a founding organizer and director of Lake
Community

DOUGLAS A. NORDELL has been the President and Chief Executive Officer of Lake
Community since November, 1998. He also served as the Executive Vice President
and Chief Operating Officer of Roseville 1st National Bank since November, 1994.
From December, 1991 through November, 1994 he was co-owner of three convenience
mini marts known as Square Deal Marts, Inc. in Chico, California. Prior to that
he served in various banking management positions for eighteen years.

BRANDT PETERSON has served at the Senior Vice President and Credit Administrator
of Lake Community since January, 1993, has twenty-three years of commercial
banking experience, including five years as President of the former Clear Lake
National Bank in Clearlake, California.

HOWARD ("BUD") VAN LENTE is a long time resident of the Lakeport area, and
serves as the Chairman of the Board of Directors of Lake Community. Mr. Van
Lente was a licensed real estate broker. He was a seven-year member of the
Lakeport Planning Commission, is the former Mayor and currently serving as City
Councilman for the City of Lakeport. Mr. Van Lente is a partner in a real estate
investment company and has owned a real estate brokerage firm. He and his wife,
Gwen, have also owned several business operations in Lakeport. Mr. Van Lente is
a founding organizer of the Lake Community and chaired the organizing committee.

LAKE COMMUNITY'S BOARD OF DIRECTORS AND COMMITTEES. Lake Community's Board of
Directors met fourteen (14) times in 1997. All of Lake Community's directors
attended at least 75 percent of all of Lake Community's Board of Directors'
meetings and committee meetings (of which they were a member), except Lawrence
A. Rogers who attended 62% of such meetings.

Lake Community's Board of Directors has established the following standing
committees, with membership as noted.

Lake Community's Audit Committee is composed of Donald L. Browning, M.D. as
Chairman, and John H. Helms, Billie L. Holmes, and Lawrence A. Rogers as
members. Lake Community's Audit Committee met three (3) times during 1997. The
functions of Lake Community's Audit Committee are to recommend the appointment
of and to oversee a firm of independent public accountants which audits the
books and records of Lake Community for the fiscal year for which

   
                                       193
    

<PAGE>   203

it is appointed, to approve each professional service rendered by such
accountants and to evaluate the possible effect of each such service on the
independence of Lake Community's accountants.

Lake Community's Asset/Liability and Funds Management Committee is composed of
F. Ilene Dumont, John H. Helms, Billie L. Holmes, May G. Noble, Lawrence A.
Rogers, Brandt Peterson and Vice President/Controller Dorey Pendleton as
members. Lake Community's Asset/Liability and Funds Management Committee met
twelve (12) times during 1997. The function of Lake Community's Asset/Liability
and Funds Management Committee is to review and evaluate Lake Community's
investment portfolio with management of Lake Community.

Lake Community's Loan Committee is composed of Billie L. Holmes as Chairperson,
and F. Ilene Dumont, John H. Helms, May G. Noble, Gary E. Nordine, Howard
("Bud")Van Lente and Brandt Peterson as members. Lake Community's Loan Committee
met eighteen (18) times during 1997. The function of Lake Community's Loan
Committee is to review loans made and to assist management in setting loan
policies for Lake Community. Lake Community's Loan Committee also reviews and
approves loan requests which exceed the discretionary lending limits of Lake
Community's officers.

Lake Community does not maintain a nominating committee. The functions of a
nominating committee are performed by the full Board of Directors of Lake
Community.

COMPENSATION OF DIRECTORS AND EXECUTIVE OFFICERS.

Director Compensation. Lake Community's directors each receive $500 for each
regular Lake Community Board of Directors' meeting attended and Lake Community's
Chairman of the Board receives $900 for each regular Lake Community Board of
Directors' meeting attended. Lake Community's directors do not receive fees for
committee meetings attended, except for members of Lake Community's Loan
Committee. Nonemployee members of Lake Community's Loan Committee receive $150
for each regularly-scheduled Lake Community Loan Committee meeting attended, and
the Chairman of such Lake Community Loan Committee receives $250 for each
regularly-scheduled Lake Community Loan Committee meeting attended. During the
fiscal year ended December 31, 1997, the aggregate amount paid to all directors
as a group was $57,500.

Executive Compensation. The following table sets forth a summary of the
compensation paid during each of Lake Community's last three completed fiscal
years for services rendered in all capacities to Gary E. Nordine, the Chief
Executive Officer of Lake Community during the last three fiscal years.


   
                                       194
    

<PAGE>   204

                           SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                          Long Term Compensation
                                                                                    ---------------------------------
                                  Annual Compensation                                        Awards           Payouts
- ---------------------------------------------------------------------------------   -----------------------   -------
           (a)                      (b)          (c)          (d)          (e)          (f)          (g)        (h)         (i)
- ----------------------------      -------      -------      -------     ---------   -----------    --------   -------    ---------
                                                                         Other
                                                                         Annual     Restricted                           All Other
        Name and                                                         Compen-       Stock                   LTIP       Compen-
        Principal                              Salary        Bonus      sation(1)     Award(s)     Options/   Payouts    sation(3)
        Position                    Year         ($)          ($)          ($)          ($)        SARs(2)      ($)        ($)
- ----------------------------      -------      -------      -------     ---------   -----------    --------   -------    ---------
<S>                               <C>          <C>          <C>         <C>         <C>            <C>        <C>        <C>
Gary E. Nordine, President,        1997        $96,900        $0          $4,800          0            0         0       $298,557(2)
CEO and Director of Lake
Community                          1996        $96,900        $0          $4,800          0            0         0       $291,423

                                   1995        $99,300      $32,500       $4,800          0            0         0       $299,160
</TABLE>

- -----------------

(1)     Consists of an annual automobile allowance.

(2)     Reflects (for 1997) $292,206 Mr. Nordine would be entitled to receive
        (295% of his base salary) if his employment is terminated as a result of
        a merger or change in control of Lake Community. Mr. Nordine may be
        entitled to other payments in the event of termination of employment
        under other circumstances. Also includes (for 1997) $750 contributed by
        Lake Community to Mr. Nordine's account in Lake Community's 401(k) Plan,
        $5,000 in directors' fees paid by Lake Community and $601 in term life
        insurance payments made by Lake Community on behalf of Mr. Nordine.


                 OPTION/SAR EXERCISES AND YEAR END VALUE TABLE
            AGGREGATED OPTION/SAR EXERCISES IN LAST FISCAL YEAR AND
                           YEAR END OPTION/SAR VALUE

<TABLE>
<CAPTION>
       (a)                       (b)               (c)                    (d)                           (e)
- ------------------         --------------    ----------------       -----------------            -----------------
                                                                                                     Value of
                                                                       Number of                   Unexercised 
                                                                      Unexercised                  In-the-Money
                                                                     Options/SARs at              Options/SARs at
                               Shares                                  Year End (#)                Year End ($)
                             Acquired on      Value Realized           Exercisable/                Exercisable/
     Name                    Exercise (#)          ($)               Unexercisable(1)             Unexercisable(1)
- ------------------         --------------    ----------------       -----------------            -----------------
<S>                        <C>               <C>                    <C>                          <C>
Gary E. Nordine                  0                   0                   17,850/0                    $22,313/$0
</TABLE>

   
                                       195
    
<PAGE>   205

On February 1, 1995, the expiration date of Mr. Nordine's five (5) year
employment agreement with Lake Community was extended to February 1, 1999. On
March 29, 1996, Lake Community entered into a new agreement with Mr. Nordine,
effective February 1, 1996, which replaced the prior agreement (the "1996
Agreement"). Subject to prior termination by either Lake Community or Mr.
Nordine, the 1996 Agreement is for a term of five (5) years; provided, however,
that the original term shall be automatically extended for one (1) month upon
completion of each additional month of employment, unless Lake Community gives
Mr. Nordine one (1) year's notice of intent to terminate. As of February 1,
1998, Mr. Nordine's current annual salary under the 1996 Agreement is $96,900,
subject to annual increases within the sole discretion of Lake Community's Board
of Directors. Lake Community also may pay an annual discretionary bonus to Mr.
Nordine based upon his efforts and performance. Mr. Nordine also receives an
automobile allowance of $400 per month and he is reimbursed for all ordinary and
necessary expenses incurred in promoting the business of Lake Community.
Further, Mr. Nordine has health, accident and disability insurance and a term
life insurance policy in the amount of $135,000, with a portion of the premium
being paid by Lake Community. The portion of the premiums paid by Lake Community
for such insurance during 1996 was $268. If Mr. Nordine is terminated without
cause during the term of the agreement, he will be entitled to receive severance
pay in an amount equal to six (6) months' salary at his then prevailing rate. As
Mr. Nordine retired effective October 31, 1998, his employment agreement expired
as of that date.

Upon consummation of the Western Sierra/Lake Community merger, Gary Nordine will
receive a severance payment of $145,000 (net of taxes), with the tax liability
being shared equally by Western Sierra and Lake Community. In recognition of Mr.
Nordine' retirement as of October 31, 1998, the severance payment to Mr. Nordine
is not contingent upon his being employed by Lake Community as of the Lake
Community Effective Time. Mr. Nordine will continue to receive his monthly
salary, but no other benefits, from November 1 through November 30, 1998.

Mr. Nordine also has an Executive Retirement Agreement with Lake Community which
provides that Lake Community will pay Mr. Nordine $36,000 a year, in monthly
payments, for a period of ten (10) years, commencing in January 1999.

   
To fund its obligation under this plan, Lake Community acquired a life insurance
policy under which Lake Community is the owner and beneficiary. Mr. Nordine has
no claim on the insurance policy, its cash value or the proceeds of the
insurance policy. The policy's cash value is a general, unpledged, unrestricted
earning asset of Lake Community. During the fiscal year ended December 31, 1997,
Lake Community paid insurance premiums of $50,000.00.
    

On January 27, 1994, Lake Community's Board of Directors adopted an incentive
compensation plan pursuant to which a yearly incentive bonus pool would be
established based upon 15% of net income, less 401(k) Plan contributions.
Payment of incentive compensation is predicated upon Lake Community achieving
"Premier Performer" status as defined by The Findley Reports, and as adjusted
from time to time. If "Premier Performer" status is not achieved in any given
year, the participants will not be eligible for incentive compensation under the
plan. However, Lake Community's Board of Directors, in its sole discretion, may
elect to evaluate any extraordinary circumstances that may have impacted
operating performance and make corresponding adjustments if deemed appropriate.


   
                                       196
    

<PAGE>   206

Incentive bonus allocations are made at the sole discretion of Lake Community's
Board of Directors, and can be adjusted from time-to-time as Lake Community's
Board or Directors deems appropriate to accurately reflect individual
performance as supported by an annual evaluation.

During 1997, no contribution to the incentive bonus pool was made by Lake
Community.

CERTAIN TRANSACTIONS

Since January 1, 1997, the largest aggregate amounts of any extensions of credit
to directors, principal officers, principal shareholders and their respective
associates as a group was $447,362.59, which represented approximately 4.74% of
the total equity capital accounts of Lake Community as of September 30, 1998.
Lake Community has had and expects to have in the future, banking transactions
in the ordinary course of its business with directors, officers, principal
shareholders and their associates, on substantially the same terms, including
interest rates and collateral on loans, as those prevailing at the time for
comparable transactions with others and which do not involve more than the
normal risk of collectibility or present other unfavorable features.

At no time since January 1, 1997 has Lake Community had outstanding aggregate
extensions of credit to any of its directors, officers, principal security
holders or their respective associates in excess of 10% of the equity accounts
of Lake Community.

There have been no transactions since January 1, 1997, nor are there any
presently proposed transactions, to which Lake Community was or is to be a party
in which any of Lake Community's officers and directors had or have a direct or
indirect material interest other than the proposed Western Sierra/Lake Community
merger.


   
                                       197
    
<PAGE>   207

   
                            Description of Roseville
    

BUSINESS

GENERAL. Roseville was incorporated under the laws of the State of California on
April 2, 1997. Roseville was organized pursuant to a plan of reorganization for
the purpose of becoming the parent corporation of Roseville 1st National Bank,
and on March 10, 1998, the reorganization was effected. Shareholders of
Roseville 1st National Bank became shareholders of Roseville as of this date.
The issuance of shares of Roseville stock in exchange for Roseville 1st National
Bank stock was deferred pending the Western Sierra/Roseville merger. Roseville
is a registered bank holding company under the Bank Holding Company Act of 1956.
Roseville conducts its operations at the head office of Roseville 1st National
Bank located at 1801 Douglas Boulevard, Roseville, California 95661.

Roseville 1st National Bank was founded in 1983 as Countryside Thrift and Loan
("Countryside"). Countryside operated as an industrial loan company until its
conversion to a national bank in 1992. During this time, Countryside primarily
originated consumer and mortgage loans. A change in control occurred in 1990
when Countryside was recapitalized and FDIC insurance was obtained. On January
22, 1992, Countryside applied for conversion to a national bank through the
Comptroller. After a field examination was conducted by the Comptroller, the
request was approved on April 6, 1992, and Countryside converted to a national
bank on July 1, 1992.

Roseville 1st National Bank is a member of the Federal Reserve System and its
deposits are insured to the maximum amount permitted by law by the FDIC.
Roseville 1st National Bank's head office is located at 1801 Douglas Boulevard,
Roseville, California and its branch office is located at 6951 Douglas
Boulevard, Granite Bay, California. Roseville 1st National Bank does not have
any affiliates or subsidiaries.

BANKING SERVICES. Roseville is a locally owned and operated bank holding company
and its primary service area is the Northern California communities of Roseville
and Granite Bay as well as close proximity areas of Placer and Sacramento
counties. Roseville's primary business is servicing the banking needs of these
communities through Roseville 1st National Bank and its marketing strategy
stresses community involvement and commitment to serve the banking needs of
consumers living and working in Roseville's primary service areas and local
merchants, professionals and real estate related activities in those service
areas.

Roseville 1st National Bank offers a broad range of services to individuals and
businesses in its primary service area with an emphasis upon efficiency and
personalized customer service. Roseville 1st National Bank provides a full line
of consumer services and also offers specialized services, such as courier
services to small businesses, middle market companies and professional firms.
Roseville 1st National Bank offers personal and business checking and savings
accounts, including individual interest-bearing negotiable orders of withdrawal
("NOW"), money market accounts, IRA accounts, time certificates of deposit and
direct deposit of social security, pension and payroll checks. Roseville 1st
National Bank also makes available commercial, construction, accounts
receivable, inventory, automobile, home improvement, real estate, commercial
real estate, single family mortgage, office equipment, leasehold improvement and
installment loans, as well as overdraft protection lines of credit, issues
drafts and standby letters of credit, sells



   
                                       198
    

<PAGE>   208

traveler's checks (issued by an independent entity), offers ATMs tied in with
major statewide and national networks, provides telephone banking services and
offers other customary commercial banking services.

Most of Roseville 1st National Bank's deposits are obtained from commercial
businesses, professionals and individuals. At September 30, 1998, Roseville 1st
National Bank had a total of 2,651 accounts, consisting of demand deposit
accounts with an average balance of approximately $12,128; savings, NOW and
money market accounts with an average balance of approximately $14,549, time
certificates of $100,000 or more with an average balance of approximately
$139,545; and other time deposits with an average balance of approximately
$26,175. Roseville 1st National Bank does not have any deposits obtained through
deposit brokers at this time and has no intention of accepting brokered
deposits.

Other special services and products include personal and business checking
products and mortgage products and services.

EMPLOYEES. At September 30, 1998 Roseville and its subsidiaries employed 25
persons on a full-time basis. Roseville believes its employee relations are
excellent.

PROPERTIES. Roseville 1st National Bank owns the real property located at 1801
Douglas Boulevard, Roseville, California. The building situated on the property
consists of 7,960 square feet and houses the executive and head offices of
Roseville and Roseville 1st National Bank.

Roseville 1st National Bank leases the premises of Roseville 1st National Bank's
Granite Bay branch office located at 6951 Douglas Boulevard, Granite Bay,
California. The lease is presently for a term expiring July 1, 2000. The office
space at this branch consists of approximately 2,800 square feet and is the site
of Roseville 1st National Bank's computer and back office operations.

Roseville 1st National Bank leases warehouse facilities located at 209-A Harding
Boulevard, Roseville, California. The premises are rented on a month-to-month
basis. Off-site storage consists of approximately 800 square feet.

LEGAL PROCEEDINGS. From time to time, Roseville and/or Roseville 1st National
Bank is a party to claims and legal proceedings arising in the ordinary course
of business. Roseville's management is not aware of any material pending
litigation proceedings to which either it or Roseville 1st National Bank is a
party or has recently been a party to, which will have a material adverse effect
on the financial condition or results of operations of Roseville and Roseville
1st National Bank taken as a whole.

SUPERVISION AND REGULATION.

Supervision and Regulation of Bank Holding Companies. Roseville is a bank
holding company subject to the BHCA. Roseville reports to, registers with, and
may be examined by, the FRB. The FRB also has the authority to examine
Roseville's nonbanking subsidiaries. The costs of any examination by the FRB are
payable by Roseville.


   
                                       199
    

<PAGE>   209

Roseville also is a bank holding company within the meaning of Section 3700 of
the California Financial Code. As such Roseville and Roseville 1st National Bank
are subject to examination by, and may be required to file reports with, the
DFI.

   
The FRB has significant supervisory and regulatory authority over Roseville and
its affiliates. The FRB requires Roseville to maintain certain levels of
capital. See "Description of Roseville--Roseville's Management's Discussion And
Analysis of Financial Condition And Results Of Operations--Regulatory Matters."
The FRB also has the authority to take enforcement action against any bank
holding company that commits any unsafe or unsound practice, or violates certain
laws, regulations or conditions imposed in writing by the FRB. See "Information
Concerning Western Sierra, Lake Community and Roseville--Recent Legislation and
Other Changes."
    

Under the BHCA, a company generally must obtain the prior approval of the FRB
before it exercises a controlling influence over a bank, or acquires directly or
indirectly, more than 5% of the voting shares or substantially all of the assets
of any bank or bank holding company. Thus, Roseville would be required to obtain
the prior approval of the FRB before it acquires, merges or consolidates with
any bank or bank holding company; and any company seeking to acquire, merge or
consolidate with Roseville also would be required to obtain the approval of the
FRB.

Roseville is generally prohibited under the BHCA from acquiring ownership or
control of more than 5% of the voting shares of any company that is not a bank
or bank holding company and from engaging directly or indirectly in activities
other than banking, managing banks, or providing services to affiliates of the
holding company. A bank holding company, with the approval of the FRB, may
engage, or acquire the voting shares of companies engaged, in activities that
the FRB has determined to be so closely related to banking or managing or
controlling banks as to be a proper incident thereto. A bank holding company
must demonstrate that the benefits to the public of the proposed activity will
outweigh the possible adverse effects associated with such activity.

A bank holding company may acquire banks in states other than its home state
without regard to the permissibility of such acquisitions under state law, but
subject to any state requirement that the bank has been organized and operating
for a minimum period of time, not to exceed five years, and the requirement that
the bank holding company, prior to or following the proposed acquisition,
controls no more than 10% of the total amount of deposits of insured depository
institutions in the United States and no more than 30% of such deposits in that
state (or such lesser or greater amount set by state law). Banks may also merge
across states lines, therefore creating interstate branches. Furthermore, a bank
is now able to open new branches in a state in which it does not already have
banking operations, if the laws of such state permit such de novo branching.

The FRB generally prohibits a bank holding company from declaring or paying a
cash dividend which would impose undue pressure on the capital of subsidiary
banks or would be funded only through borrowing or other arrangements that might
adversely affect a bank holding company's financial position. The FRB's policy
is that a bank holding company should not continue its existing rate of cash
dividends on its common stock unless its net income is sufficient to fully fund
each dividend and its prospective rate of earnings retention appears consistent
with its


   
                                       200
    

<PAGE>   210

   
capital needs, asset quality and overall financial condition. See the section
entitled "Dividends" for additional restrictions.
    

Transactions between Roseville and Roseville 1st National Bank are subject to a
number of other restrictions. FRB policies forbid the payment by bank
subsidiaries of management fees which are unreasonable in amount or exceed the
fair market value of the services rendered (or, if no market exists, actual
costs plus a reasonable profit). Subject to certain limitations, depository
institution subsidiaries of bank holding companies may extend credit to, invest
in the securities of, purchase assets from, or issue a guarantee, acceptance, or
letter of credit on behalf of, an affiliate, provided that the aggregate of such
transactions with affiliates may not exceed 10% of the capital stock and surplus
of the institution, and the aggregate of such transactions with all affiliates
may not exceed 20% of the capital stock and surplus of such institution.
Roseville may only borrow from depository institution subsidiaries if the loan
is secured by marketable obligations with a value of a designated amount in
excess of the loan. Further, Roseville may not sell a low-quality asset to a
depository institution subsidiary.

The FRB has adopted comprehensive amendments to Regulation Y which became
effective April 21, 1997, and are intended to improve the competitiveness of
bank holding companies by, among other things: 

   
- -       expanding the list of permissible nonbanking activities in which
        well-run bank holding companies may engage without prior FRB approval, 

- -       streamlining the procedures for well-run bank holding companies to
        obtain approval to engage in other nonbanking activities and

- -       eliminating most of the anti-tying restrictions imposed upon bank
        holding companies and their nonbank subsidiaries. 

Amended Regulation Y also provides for a streamlined and expedited review
process for bank acquisition proposals submitted by well-run bank holding
companies and eliminates certain duplicative reporting requirements when there
has been a further change in bank control or in bank directors or officers after
an earlier approved change. These changes to Regulation Y are subject to
numerous qualifications, limitations and restrictions. In order for a bank
holding company to qualify as "well-run," both it and the insured depository
institutions that it controls must meet the "well-capitalized" and
"well-managed" criteria set forth in Regulation Y.

To qualify as "well-capitalized," the bank holding company must, on a
consolidated basis: 

- -       maintain a total risk-based capital ratio of 10% or greater; 

- -       maintain a Tier 1 risk-based capital ratio of 6% or greater; and

- -       not be subject to any order by the FRB to meet a specified capital 
        level.

Its lead insured depository institution must be well-capitalized as that term is
defined in the capital adequacy regulations of the applicable bank regulator,
80% of the total risk-weighted 
    


   
                                      201
    
<PAGE>   211
   
assets held by its insured depository institutions must be held by institutions
that are well-capitalized, and none of its insured depository institutions may
be undercapitalized.

To qualify as "well-managed:" 

- -       each of the bank holding company, its lead depository institution and
        its depository institutions holding 80% of the total risk-weighted
        assets of all its depository institutions at their most recent
        examination or review must have received a composite rating, rating for
        management and rating for compliance which were at least satisfactory; 

- -       none of the bank holding company's depository institutions may have
        received one of the two lowest composite ratings; and 

- -       neither the bank holding company nor any of its depository institutions
        during the previous 12 months may have been subject to a formal
        enforcement order or action.
    

Bank Supervision and Regulation. As a national bank, Roseville 1st National Bank
is regulated, supervised and regularly examined by the Comptroller. Deposit
accounts at Roseville 1st National Bank are insured by Bank Insurance Fund
("BIF"), as administered by the FDIC, to the maximum amount permitted by law.
Roseville 1st National Bank is also subject to applicable provisions of
California law, insofar as such provisions are not in conflict with or preempted
by federal banking law. Roseville 1st National Bank is a member of the Federal
Reserve System, and is also subject to certain regulations of the FRB dealing
primarily with check clearing activities, establishment of banking reserves,
Truth-in-Lending (Regulation Z), Truth-in-Savings (Regulation DD), and Equal
Credit Opportunity (Regulation B).

The Comptroller may approve, on a case-by-case basis, the entry of bank
operating subsidiaries into a business incidental to banking, including
activities in which the parent bank is not permitted to engage. A national bank
is permitted to engage in activities approved for a bank holding company through
a bank operating subsidiary, such as acting as an investment or financial
advisor, leasing personal property and providing financial advice to customers.
In general, these activities are permitted only for well-capitalized or
adequately capitalized national banks.

By comparison, California state-chartered banks are regulated by the Department
of Financial Institutions. The Department of Financial Institutions was created
pursuant to AB 3351, effective July 1, 1997, and combined the California State
Banking Department, the California Department of Savings and Loan, and
regulatory oversight over industrial loan companies and credit unions with the
Department of Financial Institutions.

Community Reinvestment Act and Fair Lending Developments. Roseville 1st National
Bank is subject to certain fair lending requirements and reporting obligations
involving home mortgage lending operations and Community Reinvestment Act
("CRA") activities. The CRA generally requires the federal banking agencies to
evaluate the record of a financial institution in meeting the credit needs of
their local communities, including low and moderate income neighborhoods. In
addition to substantive penalties and corrective measures that may be required
for a violation of certain fair lending laws, the federal banking agencies may
take compliance with such laws and CRA into account when regulating and
supervising other activities.

   
    


   
                                       202
    

<PAGE>   212
   
SUMMARY OF EARNINGS

The following Summary of Earnings of Roseville for the three years ended
December 31, 1997 has been derived from financial statements audited by
Perry-Smith & Co., LLP, independent certified public accountants, as described
in their report included elsewhere in this joint proxy statement/prospectus. The
amounts shown for the nine months ended September 30, 1998 and 1997 are
unaudited. The September 30, 1998 and 1997 amounts reflect, in the opinion of
management, all adjustments (consisting only of normal recurring adjustments)
necessary for a fair presentation of the results of operations for such periods.
These statements should be read in conjunction with the Financial Statements and
the Notes relating thereto which appear elsewhere herein. Roseville was approved
as a bank holding company and acquired 100% ownership of Roseville 1st National
Bank on March 10, 1998. Financial statements for September 30, 1998 represent
the consolidation of Roseville and Roseville 1st National Bank. Prior period
Financial Statements represent Roseville 1st National Bank's financial
information.
    

<TABLE>
<CAPTION>
                                                 Nine Months Ended
                                                    September 30,                         Year Ended December 31,(1)
(Dollars in thousands,                       --------------------------          --------------------------------------------
except per share data)                         1998              1997              1997              1996              1995
                                             --------          --------          --------          --------          --------
                                                    (unaudited)
<S>                                          <C>               <C>               <C>               <C>               <C>
Interest income                              $  2,990          $  2,844          $  3,894          $  3,028          $  2,664
Interest expense                                1,303             1,198             1,664             1,331             1,288
Net interest income                             1,687             1,646             2,230             1,697             1,376
Provision for loan losses                         105               126               564                89                55
Net interest income after
 provision for loan losses                      1,582             1,520             1,666             1,608             1,321
Other noninterest income                          415               220               341               228               126
Noninterest expense                             1,594             1,175             1,692             1,330             1,145
Earnings before income taxes                      403               565               315               506               302
Provision for income taxes(2)                     161               226               133               204               104
Net income                                        242               339               182               302               198
Basic earnings per share(3)                  $    .75          $   1.06          $    .57          $    .94          $    .62
Number of shares used in basic
  earnings per share calculation(3)           320,158           319,972           319,972           319,872           319,572
Diluted earnings per share(4)                $    .72          $   1.04          $    .56          $    .93          $    .61
Number of shares used in diluted
  earnings per share calculation(4)           333,661           324,648           324,648           324,622           324,530
</TABLE>

- -------------------

(1)     See Notes to Financial Statements for a summary of significant
        accounting policies and other related data.

(2)     See Notes to Financial Statements for an explanation of income taxes.

(3)     Basic earnings per share information is based on the weighted average
        number of shares of common stock outstanding during each period.

(4)     Diluted earnings per share information is based on the weighted average
        number of shares of common stock and common stock equivalents
        outstanding during each period.

   
    


   
                                       203
    

<PAGE>   213
   
The following table sets forth selected ratios for the periods indicated:

<TABLE>
<CAPTION>

                                       Nine Months Ended                           
(Unaudited)                               September 30,                      Year Ended December 31,
                                      ---------------------           -------------------------------------
                                      1998             1997            1997           1996             1995
                                      -----           -----           -----           -----           -----
<S>                                  <C>             <C>             <C>             <C>             <C>
Net earnings to average
 shareholders' equity(1)               7.97%          11.45%           4.54%           8.23%           5.83%
Net earnings to
 average total assets(1)                .66%           1.05%            .41%            .86%            .64%
Total interest expense to
 total interest income                43.58%          42.12%          42.73%          43.96%          48.35%
Other operating income to
 other operating expense              26.04%          18.72%          20.15%          17.14%          11.00%
</TABLE>

- -----------------

(1)     Ratios have been annualized for the nine months ended September 30, 1998
        and 1997.
    

ROSEVILLE'S MANAGEMENT'S DISCUSSION AND ANALYSIS
OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following is management's discussion and analysis of the significant changes
in income and expense accounts presented in the Summary of Earnings for the
years ended December 31, 1997, 1996 and 1995 and the nine months ended September
30, 1998 and 1997.

INTRODUCTION. This discussion is designed to provide a better understanding of
significant trends related to Roseville's financial condition, results of
operations, liquidity, capital resources and interest rate sensitivity. It
should be read in conjunction with Roseville's audited financial statements and
unaudited interim financial statements and notes thereto and the other financial
information appearing elsewhere in this joint proxy statement/prospectus.

   
NET INTEREST INCOME AND NET INTEREST MARGIN. Total interest income increased
from $2.66 million in 1995 to $3.03 million in 1996, and to $3.89 million in
1997, representing a 13.7% increase in 1996 over 1995 and a 28.6% increase in
1997 over 1996. Total interest income increased from $2.84 million for the nine
months ended September 30, 1997, to $2.99 million for the nine months ended
September 30, 1998, representing a 5.1% increase. The total interest income
increases in the periods discussed were primarily the result of the growth in
Roseville's loan and investment portfolios of 21.1%, 22.7% and 1.5% from 1995 to
1996, 1996 to 1997, and September 30, 1997 to September 30, 1998. Additionally,
during 1997 commercial loans, the highest yielding component of the loan
portfolio, increased by 94% to represent 25% of the loan portfolio at December
31, 1997. Growth in the loan portfolio and related net interest income slowed in
the first nine months of 1998 due to increased competition for quality loans.
Total interest expense increased from $1.29 million in 1995 to $1.33 million in
1996 and to $1.66 million in 1997, representing a 3.4% increase in 1996 over
1995 and a 25.0% increase in 1997 over 1996. Total interest expense increased
from $1.20 million for the nine months ended September 30, 1997, to $1.30
million for the nine months ended September 30, 1998, representing an 8.8%
increase. Total interest expense increased from 1996 to 1997 due primarily to a
33.6% growth in deposits and increase in higher yielding time deposits from
50.3% to 54.9% of total interest-bearing deposits during that period. The growth
in deposits since 1997 resulted 
    

   
                                       204
    

<PAGE>   214
   
in the increase in interest expense for the nine months ended September 30, 1998
over the same nine month period in 1997.

Roseville's net interest margin (net interest income divided by average earning
assets) was 4.76% in 1995, 5.26% in 1996, and 5.40% in 1997. The net interest
margin for the nine months ended September 30, 1997 was 5.56% and for the nine
months ended September 30, 1998 was 5.10%. The primary reason for the decrease
in the net interest margin for the nine months ended September 30, 1998 from the
nine months ended September 30, 1997 was the overall change in mix in the loan
portfolio, which decreased the yield on interest-earning assets, as well as the
increases in yields on interest-bearing liabilities. Roseville's net interest
income increased from $1.38 million and in 1995 to $1.70 million in 1996 and to
$2.23 million in 1997, representing a 23.3% increase in 1996 over 1995 and a
31.4% increase in 1997 over 1996. The increases in the periods discussed were
primarily the result of the overall growth of Roseville and the fact that
interest rates for interest-bearing liabilities increased at a slower rate than
interest rates on interest-earning assets. Net interest income increased from
$1.65 million for the nine months ended September 30, 1997 to $1.69 million for
the nine months ended September 30, 1998, representing a 2.5% increase. The
increase in net interest income for the nine months ended September 30, 1998
over the nine months ended September 30, 1997 was at a reduced growth rate
primarily due to decreasing yields on loans due to market pressures.
    

The following table sets forth the changes in interest income and expense
attributable to changes in rates and volumes:

ANALYSIS OF CHANGES IN NET INTEREST INCOME.

<TABLE>
<CAPTION>
(Dollars in thousands)                                               Year Ended December 31,
                                       -------------------------------------------------------------------------------------
                                                 1997 Versus 1996                                 1996 Versus 1995
                                      ---------------------------------------          --------------------------------------
                                                      Change           Change                          Change          Change
                                       Total          Due to           Due to          Total           Due to          Due to
                                      Change           Rate            Volume          Change           Rate           Volume
                                      ------           ----            ------          ------           ----           ------
<S>                                  <C>              <C>             <C>             <C>              <C>            <C>
CDs in other institutions              $  (6)          $   0           $  (6)          $  (7)          $   0           $  (7)
Federal funds sold                        90              11              79              25             (18)             43
Investment securities                     40              (2)             42             (35)             36             (71)
Loans, gross                             742              (5)            747             381             (22)            403
                                       -----           -----           -----           -----           -----           -----
         Total interest-
          earnings assets              $ 866           $   4           $ 862           $ 364           $  (4)          $ 368
                                       -----           -----           -----           -----           -----           -----

NOW, MMDA                              $ 144           $ (11)          $ 155           $  68           $ (56)          $ 124
Savings                                    8               0               8               7               0               7
Certificates of deposit                  181               8             173             (32)            (28)             (4)
                                       -----           -----           -----           -----           -----           -----
         Total interest-
          bearing liabilities          $ 333           $  (3)          $ 336           $  43           $ (84)          $ 127
                                       -----           -----           -----           -----           -----           -----

Net interest income                    $ 533           $   7           $ 526           $ 321           $  80           $ 241
                                       =====           =====           =====           =====           =====           =====
</TABLE>

The change in interest income or interest expense that is attributable to both
changes in rate and changes in volume has been allocated to the change due to
rate and the change due to volume in proportion to the relationship of the
absolute amounts of changes in each.

   
    


   
                                       205
    

<PAGE>   215
   
The following is an unaudited summary of changes in earnings of Roseville for
the nine months ended September 30, 1998 and 1997 and for the years ended
December 31, 1997 and 1996. In the opinion of Roseville's management, the
following summary of changes in earnings reflects all adjustments which
Roseville considers necessary for a fair presentation of the results of its
operations for these periods. This summary of changes in earnings should be read
in conjunction with the Financial Statements and Notes relating thereto
appearing elsewhere herein.


                                      206
    
<PAGE>   216

<TABLE>
<CAPTION>
                                        Nine Months Ended                   Year Ended December 31,
                                           September 30,       ---------------------------------------------------
(Dollars in thousands)                    1998 over 1997          1997 over 1996             1996 over 1995
(Unaudited)                           --------------------     -----------------------    ------------------------
                                      Amount of      % of      Amount of        % of      Amount of        % of
                                       Change       Change       Change      Change(1)      Change       Change(1)
                                      ---------     ------     ---------     ---------    ---------      ---------
<S>                                  <C>            <C>       <C>           <C>          <C>           <C>
INTEREST INCOME
  Interest and fees on loans           $  92          3.8%        $ 742         29.2%        $ 381         17.6%
  Interest on securities                 (28)       (13.9)%          40         17.7%          (35)       (13.4)%
  Interest on federal funds sold          82         39.0%           90         35.9%           25         11.1%
  Interest on deposits in
   other financial institutions            0            0%           (6)       (100.0)%         (7)       (54.6)%
                                       -----                      -----                      -----
     Total interest income               146          5.1%          866         28.6%          364         13.7%

INTEREST EXPENSE
  Interest on deposits                   105          8.8%          333         25.0%           43          3.3%
                                       -----                      -----                      -----
     Net interest income                  41          2.5%          533         31.4%          321         23.3%

PROVISION FOR
  LOAN LOSSES (Benefit)                  (21)       (16.7)%         475        533.7%           34         61.8%
                                       -----                      -----                      -----
    Net interest income after
     provision for loan losses            62          4.1%           58          3.6%          287         21.7%
                                       -----                      -----                      -----

NONINTEREST INCOME
  Service charges                         10         24.4%           25         75.8%           13         65.0%
  Other income                           185        103.4%           88         44.7%           89         84.8%
                                       -----                      -----                      -----
     Total noninterest income            195         88.6%          113         49.6%          102         81.0%
                                       -----                      -----                      -----

OTHER EXPENSES
  Salaries and related benefits          101         16.7%          116         16.6%          124         21.5%
  Occupancy and
   equipment expense                      55         37.2%           27         18.0%            4          2.7%
  Other                                  263         62.2%          219         45.7%           57         13.5%
                                       -----                      -----                      -----
     Total other expenses                419         35.7%          362         27.2%          185         16.1%
                                       -----                      -----                      -----
     Income before income taxes         (162)       (28.7)%        (191)       (37.8)%         204         67.6%

PROVISION FOR
 INCOME TAXES (BENEFIT)                  (65)       (28.8)%         (71)       (34.8)%         100         96.2%
                                       -----                      -----                      -----

     NET INCOME                        $ (97)       (28.6)%       $(120)       (39.7)%       $ 104         52.5%
                                       =====                      =====                      =====
</TABLE>

- -------------------
(1)      Increase or (decrease) over previous year amount.



   
                                       207
    

<PAGE>   217

NONINTEREST INCOME. Noninterest income increased from $126 thousand in 1995 to
$228 thousand in 1996 and to $341 thousand in 1997, representing a 81.0%
increase in 1996 over 1995 and a 49.3% increase in 1997 over 1996. Noninterest
income increased from $220 thousand for the nine months ended September 30, 1997
to $415 thousand for the nine months ended September 30, 1998, representing an
88.6% increase. The increases in noninterest income in 1996 and 1997 were
primarily the result of service charges and fees related to increased deposits
and new product service fees. The increases for the first nine months of 1998
over the same period in 1997 were the result of increased sales of loans with
gains totaling $130 thousand and earnings related to life insurance policies on
key members of senior management.

OTHER EXPENSES. The continued growth of Roseville required additional staff and
overhead expense to support general and administrative services and increased
the cost of occupying Roseville's main office and one branch opened in May 1997.
Other expenses are comprised of salaries and related benefits, occupancy,
equipment and other expenses. Other expenses increased from $1.15 million in
1995 to $1.33 million in 1996, and to $1.69 million in 1997, representing a
16.1% increase in 1996 over 1995 and a 27.2% increase in 1997 over 1996. Other
expenses increased from $1.18 million for the nine months ended September 30,
1997 to $1.59 million for the nine months ended September 30, 1998 representing
a 35.7% increase. Salaries were also adjusted for 1998 to be competitive with
the industry and to reward performance. The increase in total other expenses for
the periods compared was due to the continued growth of Roseville, computer
system conversion expenses in 1997 and the costs of forming a holding company in
1998.

The following table compares the various elements of other expenses as a
percentage of average assets for the years ended December 31, 1997, 1996 and
1995 and the nine months ended September 30, 1998 and 1997. (Dollars in
thousands except percentage amounts.)

<TABLE>
<CAPTION>
                                                           Salaries             Occupancy                Other
                                 Average                 and Related           & Equipment             Operating
     Period                     Assets(1)                  Benefits              Expenses               Expenses
- -----------------               ---------                ------------          -----------             ---------
<S>                            <C>                       <C>                   <C>                    <C>
Nine Months Ended
 September 30,(2)
- -----------------
      1998                       $49,020                     2.06%                  .55%                  1.73%
      1997                       $42,876                     1.88%                  .46%                  1.32%
</TABLE>


<TABLE>
<CAPTION>
   Year Ended
  December 31,
- -----------------
<S>                             <C>                         <C>                    <C>                   <C>
      1997                       $44,625                     1.83%                  .40%                  1.56%
      1996                       $35,188                     1.99%                  .43%                  1.36%
      1995                       $30,914                     1.87%                  .47%                  1.36%
</TABLE>


- ------------------

(1)     Based on the average of daily balances.

(2)     Expense ratios are calculated on an annualized basis.



   
                                       208
    

<PAGE>   218


PROVISION FOR LOAN LOSSES. The provision for loan losses corresponds directly to
the level of the allowance that management deems sufficient to offset potential
loan losses. The balance in the loan loss allowance reflects the amount which,
in management's judgement, is adequate to provide for these potential loan
losses after weighing the mix of the loan portfolio, current economic
conditions, past loan experience and such other factors deserving recognition in
estimating loan losses.

Management allocated $564 thousand as a provision for loan losses in 1997, $89
thousand in 1996 and $55 thousand in 1995. Loans charged off net of recoveries
in 1997 were $94 thousand, in 1996 were $21 thousand and in 1995 were $28
thousand. For the nine months ended September 30, 1998, $105 thousand was
allocated as a provision for loan losses and for the nine months ended September
30, 1997, $126 thousand was allocated as a provision for loan losses. Loans
charged off net of recoveries for the nine months ended September 30, 1998 were
$533 thousand and for the nine months ended September 30, 1997 were $89
thousand. During the first nine months of 1998, $481 thousand of the amount
charged off was related to a single commercial loan and $400 thousand was added
to the provision for loan losses in December 1997 to cover this risk. The ratio
of the allowance for loan losses to total gross loans was 2.07% in 1997, .92% in
1996, and .81% in 1995, and for the interim periods was .95% at September 30,
1998 and .90% at September 30, 1997.

In management's opinion, the balance of the allowance for loan losses at
September 30, 1998 was sufficient to sustain any foreseeable losses in the loan
portfolio at that time.

INCOME TAXES. Income taxes were $133 thousand in 1997, $204 thousand in 1996 and
$104 thousand in 1995. The income tax provision for the nine months ended
September 30, 1998 and 1997 was $161 thousand and $226 thousand, respectively.

NET INCOME. The net income of Roseville was $182 thousand or $.57 in basic
earnings per share in 1997, $302 thousand or $.94 in basic earnings per share in
1996, and $198 thousand or $.62 in basic earnings per share in 1995. The income
for these periods was primarily due to net interest income and service charges
and fees. The net income for the nine months ended September 30, 1998 was $242
thousand or $.75 in basic earnings per share as compared to a net income of $339
thousand or $1.06 in basic earnings per share for the nine months ended
September 30, 1997. The decrease in net income for the first nine months of 1998
from the same period in 1997 was due to higher expenses resulting from staffing
increases, installation of new computer systems and the cost of forming
Roseville as a holding company.

LIQUIDITY. Roseville has an asset and liability management program allowing
Roseville to maintain its interest margins during times of both rising and
falling interest rates and to maintain sufficient liquidity. Liquidity of
Roseville at December 31, 1997 was 24.21%, at December 31, 1996 was 23.23%, and
at December 31, 1995 was 24.79% based on liquid assets (consisting of cash and
due from banks, deposits in other financial institutions, investments not
pledged, federal funds sold and loans available-for-sale) divided by total
liabilities. Roseville's management believes it maintains adequate liquidity
levels.

CAPITAL RESOURCES. The shareholders' equity accounts of Roseville increased from
$3.47 million at December 31, 1995, to $3.78 million at December 31, 1996 and to
$3.96 million at December 31, 1997. These increases are attributable to earnings
of Roseville in 1996 and 1997. Roseville



   
                                       209
    

<PAGE>   219

is subject to various regulatory capital requirements administered by the
federal banking agencies. Under capital adequacy guidelines and the regulatory
framework for prompt corrective action, Roseville must meet specific capital
guidelines that involve quantitative measures of Roseville's assets, liabilities
and certain off-balance sheet items as calculated under regulatory accounting
practices. Roseville's capital amounts and classification are also subject to
qualitative judgments by the regulators about components, risk weightings and
other factors.

Quantitative measures established by regulation to ensure capital adequacy
require Roseville to maintain minimum amounts and ratios of total and Tier 1
capital (primarily common stock and retained earnings less goodwill) to
risk-weighted assets, and of Tier 1 capital to average assets. Management
believes, as of September 30, 1998, that Roseville exceeds all capital adequacy
requirements to which it is subject.

As of June 30, 1998, the most recent notification from the FDIC categorized
Roseville as well capitalized under the regulatory framework for prompt
corrective action. To be categorized as well capitalized Roseville must maintain
minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios as set
forth in the table below. There are no conditions or events since that
notification which management believes have changed Roseville's category.

Roseville's actual capital ratios are presented below.

<TABLE>
<CAPTION>
                                                                                      Minimum
                                         Minimum                   Well                Actual
                                         Capital               Capitalized           September 30,
                                       Requirement             Requirement               1998
                                       -----------             -----------           -------------
<S>                                   <C>                     <C>                   <C>
Capital ratios:

Tier 1 risk-based to
  risk-weighted assets                      4%                      6%                   11.7%
Total risk-based to
  risk-weighted assets                      8%                     10%                   12.4%
Leverage to total
  average assets                            4%                      5%                    9.3%
</TABLE>


   
                                       210
    

<PAGE>   220
SCHEDULE OF ASSETS, LIABILITIES AND SHAREHOLDERS' EQUITY. The following schedule
shows the unaudited average balances of Roseville's assets, liabilities and
shareholders' equity accounts and the percentage distribution of the items,
computed using the daily average balances, for the periods indicated.

<TABLE>
<CAPTION>
                                                      Nine Months Ended
(Dollars in thousands)                                   September 30,
                                     ----------------------------------------------------
(Unaudited)                                  1998                         1997
                                     ------------------------    ------------------------
                                     Amount        Percent(1)    Amount        Percent(1)
                                     ------        ----------    ------        ----------
<S>                                 <C>           <C>           <C>           <C>
ASSETS
Cash and due from banks             $  1,809           3.7%     $  1,393           3.2%
Deposits in other
    financial institutions
Investment securities                  3,732           7.6%        4,252           9.9%
Federal funds sold                     7,023          14.3%        4,983          11.6%
Loans:
  Commercial                           7,217          14.7%        4,084           9.5%
  Installment                          2,483           5.1%        3,105           7.2%
  Real estate                         23,659          48.3%       23,056          54.0%
Less deferred fees                       (75)          (.2)%        (119)          (.3)%
Less allowance for
 loan losses                            (496)         (1.0)%        (208)          (.5)%
                                    --------                    --------
     Net loans                        32,768          66.9%       29,918          69.9%
                                    --------                    --------
Bank premises and
     equipment, net                    1,700           3.5%        1,579           3.7%
Other assets                           1,968           4.0%          751           1.7%
                                    --------                    --------
         TOTAL ASSETS               $ 49,020         100.0%     $ 42,876         100.0%
                                    ========                    ========

LIABILITIES AND SHAREHOLDERS' EQUITY

Deposits:
  Demand                            $ 23,591          48.1%     $ 20,780          48.5%
  Savings                              1,034           2.1%          822           1.9%
  Time                                14,298          29.2%       11,818          27.6%
  Time, $100,000 & over                5,794          11.8%        5,277          12.3%
                                    --------                    --------
    Total deposits                    44,717          91.2%       38,697          90.3%
Other liabilities                        254            .5%          231            .5%
                                    --------                    --------
    Total liabilities                 44,971          91.7%       38,928          90.8%
                                    --------                    --------
Shareholders' equity:
  Common stock(2)                      2,024           4.2%        1,600           3.7%
  Additional paid-in capital                                         422           1.0%
  Retained earnings                    2,018           4.1%        1,929           4.5%
  Unrealized gain (loss) on
     available-for-sale
   investment securities                   7            .0%           (3)           .0%
                                    --------                    --------
    Total shareholders' equity         4,049           8.3%        3,948           9.2%
                                    --------                    --------
TOTAL LIABILITIES AND
 SHAREHOLDERS' EQUITY               $ 49,020         100.0%     $ 42,876         100.0%
                                    ========                    ========
</TABLE>

<TABLE>
<CAPTION>

(Dollars in thousands)                                         Year Ended December 31,
                                      --------------------------------------------------------------------------------
(Unaudited)                                   1997                       1996                         1995
                                      ------------------------    ------------------------    ------------------------
                                      Amount        Percent(1)    Amount        Percent(1)    Amount        Percent(1)
                                      ------        ----------    ------        ----------    ------        ----------
<S>                                  <C>           <C>           <C>            <C>          <C>           <C>
ASSETS
Cash and due from banks              $  1,464           3.3%     $  1,145           3.2%     $  1,105           3.6%
Deposits in other
    financial institutions                                             99            .3%          207            .7%
Investment securities                   4,197           9.4%        3,531          10.0%        4,706          15.2%
Federal funds sold                      6,072          13.6%        4,632          13.2%        3,833          12.4%
Loans:
  Commercial                            4,221           9.5%        3,223           9.2%        1,869           6.0%
  Installment                           3,017           6.7%        3,316           9.4%        4,099          13.3%
  Real estate                          23,790          53.3%       17,447          49.6%       14,204          45.9%
Less deferred fees                       (113)          (.3)%        (109)          (.3)%         (94)          (.3)%
Less allowance for
 loan losses                             (287)          (.6)%        (208)          (.6)%        (168)          (.5)%
                                     --------                    --------                    --------
     Net loans                         30,628          68.6%       23,669          67.3%       19,910          64.4%
                                     --------                    --------                    --------
Bank premises and
     equipment, net                     1,605           3.6%        1,467           4.2%          290            .9%
Other assets                              659           1.5%          645           1.8%          863           2.8%
                                     --------                    --------                    --------
         TOTAL ASSETS                $ 44,625         100.0%     $ 35,188         100.0%     $ 30,914         100.0%
                                     ========                    ========                    ========

LIABILITIES AND SHAREHOLDERS' EQUITY

Deposits:
  Demand                             $ 21,581          48.3%     $ 15,957          45.3%     $ 12,167          39.4%
  Savings                                 838           1.9%          568           1.6%          316           1.0%
  Time                                 12,163          27.3%       11,490          32.7%       11,920          38.6%
  Time, $100,000 & over                 5,766          12.9%        3,344           9.5%        2,975           9.6%
                                     --------                    --------                    --------
    Total deposits                     40,348          90.4%       31,359          89.1%       27,378          88.6%
Other liabilities                         269            .6%          158            .5%          142            .5%
                                     --------                    --------                    --------
    Total liabilities                  40,617          91.0%       31,517          89.6%       27,520          89.1%
                                     --------                    --------                    --------
Shareholders' equity:
  Common stock(2)                       1,600           3.6%        1,600           4.6%        1,598           5.1%
  Additional paid-in capital              422           1.0%          422           1.2%          421           1.4%
  Retained earnings                     1,986           4.4%        1,649           4.6%        1,375           4.4%
  Unrealized gain (loss) on
     available-for-sale
   investment securities                    0            .0%            0            .0%            0            .0%
                                     --------                    --------                    --------
    Total shareholders' equity          4,008           9.0%        3,671          10.4%        3,394          10.9%
                                     --------                    --------                    --------
TOTAL LIABILITIES AND
 SHAREHOLDERS' EQUITY                $ 44,625         100.0%     $ 35,188         100.0%     $ 30,914         100.0%
                                     ========                    ========                    ========
</TABLE>

- ---------------------

(1)     Percentages of categories under assets, liabilities and shareholders'
        equity are shown as percentages of average total assets.

(2)     On March 10, 1998 Roseville assumed 100% ownership of Roseville 1st
        National Bank. At that time no par stock was issued, eliminating
        additional paid-in-capital.



   
                                       211
    

<PAGE>   221
INVESTMENT PORTFOLIO. The following table summarizes the amounts, terms,
distributions and yields of Roseville's investment securities as of September
30, 1998, December 31, 1997 and December 31, 1996. (Dollars in thousands)

<TABLE>
<CAPTION>
                            One Year          After One Year      After Five Years
                            or Less           to Five Years         to Ten Years        After Ten Years            Total
                        ----------------     ----------------     ----------------     ----------------     -----------------
September 30, 1998      Amount     Yield     Amount     Yield     Amount     Yield     Amount     Yield     Amount      Yield
                        ------     -----     ------     -----     ------     -----     ------     -----     ------      -----
<S>                    <C>         <C>      <C>         <C>      <C>         <C>      <C>         <C>      <C>         <C>
U.S. Treasury &
 Government agencies    $  501      6.25%    $2,269      6.15%    $  963      6.31%    $    0      0.00%    $3,733      6.24%
Municipal                    0      0.00%         0      0.00%         0      0.00%       193      5.02%       193      5.02%
Other                      292      4.40%         0      0.00%         0      0.00%         0      0.00%       292      4.40%
                        ------               ------               ------               ------               ------
         Total          $  793      5.57%    $2,269      6.15%    $  963      6.31%    $  193      5.02%    $4,218      6.03%
                        ======               ======               ======               ======               ======
</TABLE>

<TABLE>
<CAPTION>
                            One Year          After One Year      After Five Years
                            or Less           to Five Years         to Ten Years        After Ten Years            Total
                        ----------------     ----------------     ----------------     ----------------     -----------------
December 31, 1997       Amount     Yield     Amount     Yield     Amount     Yield     Amount     Yield     Amount      Yield
                        ------     -----     ------     -----     ------     -----     ------     -----     ------      -----
<S>                    <C>         <C>      <C>         <C>      <C>         <C>      <C>         <C>      <C>         <C>
U.S. Treasury &
 Government agencies    $1,001      6.12%    $2,754      6.47%                                              $3,755      6.38%
Other                      255      4.35%         0      0.00%                                                 255      4.35%
                        ------               ------                                                         ------
         Total          $1,256      5.76%    $2,754      6.47%                                              $4,010      6.25%
                        ======               ======                                                         ======
</TABLE>

<TABLE>
<CAPTION>
                            One Year          After One Year      After Five Years
                            or Less           to Five Years         to Ten Years                Total
                        ----------------     ----------------     ----------------       -----------------
December 31, 1996       Amount     Yield     Amount     Yield     Amount     Yield       Amount      Yield
                        ------     -----     ------     -----     ------     -----       ------      -----
<S>                    <C>         <C>      <C>         <C>      <C>         <C>        <C>         <C>
U.S. Treasury &
 Government agencies    $  299      6.83%    $3,729      6.43%                           $4,028      6.46%
Other                      236      5.61%         0      0.00%                              236      5.61%
                        ------               ------                                      ------
         Total          $  535      6.30%    $3,729      6.43%                           $4,264      6.41%
                        ======               ======                                      ======
</TABLE>


   
                                       212
    

<PAGE>   222

LOAN PORTFOLIO. Roseville's largest historical lending categories are real
estate loans, commercial loans and consumer loans. These categories accounted
for approximately 76.0%, 16.3%, and 7.7%, respectively, of Roseville's total
loan portfolio at December 31, 1996, approximately 67.5%, 25.0%, and 7.5%,
respectively, of Roseville's total loan portfolio at December 31, 1997 and
approximately 71.5%, 21.5%, and 7.0%, respectively, at September 30, 1998. Loans
are carried at face amount, less payments collected and the allowance for
possible loan losses. Interest on all loans is accrued monthly on a simple
interest basis. Typically, once a loan is placed on nonaccrual status, Roseville
reverses interest accrued through the date of transfer. Loans are placed on a
nonaccrual basis when principal or interest on a loan is past due 90 days or
more, unless the loan is both well-secured and in the process of collection.
Interest actually received for loans on nonaccrual status is recognized as
income at the time of receipt. Problem loans are maintained on accrual status
only when management of Roseville is confident of full repayment within a
reasonable period of time.

The rates of interest charged on variable rate loans are set at specified
increments in relation to Roseville's published lending rate, based on the Bank
of America reference rate, and vary as this lending rate varies. At December 31,
1996, approximately 66.6% of Roseville's loan portfolio was comprised of
variable interest rate loans, at December 31, 1997, approximately 56.9% of
Roseville's loan portfolio was comprised of variable interest rate loans, and at
September 30, 1998, variable rate loans comprised approximately 57.3% of
Roseville's loan portfolio.

DISTRIBUTION OF LOANS. The distribution of Roseville's total loans by type of
loan as of the dates indicated is shown in the following table (dollars in
thousands):

<TABLE>
<CAPTION>
                                   (Unaudited)
                                   September 30,                   December 31,
                              ---------------------     ----------------------------------
 Type of Loan                   1998         1997         1997         1996         1995
                              --------     --------     --------     --------     --------
<S>                          <C>          <C>          <C>          <C>          <C>
Real estate                   $ 22,290     $ 21,966     $ 23,598     $ 20,890     $ 16,848
Commercial                       6,694        7,312        8,715        4,472        2,358
Consumer                         2,184        2,652        2,623        2,075        3,655
Agricultural                         0            0            0           43           65
                              --------     --------     --------     --------     --------
    TOTAL                     $ 31,168     $ 31,930     $ 34,936     $ 27,480     $ 22,926

Less:
 Deferred loans fees               (76)         (99)         (87)        (136)         (92)
 Allowance for loan losses        (296)        (290)        (724)        (254)        (185)
                              --------     --------     --------     --------     --------

    TOTAL NET LOANS           $ 30,796     $ 31,541     $ 34,125     $ 27,090     $ 22,649
                              ========     ========     ========     ========     ========
</TABLE>

COMMERCIAL LOANS. Commercial loans are made for the purpose of providing working
funds, financing the purchase of equipment or inventory and for other business
purposes. Such loans include loans with maturities ranging from 30 to 360 days,
and "term loans", which are loans with maturities normally ranging from one to
five years. Short term business loans are generally used to finance current
transactions and typically provide for periodic interest payments, with
principal being payable at maturity or periodically. Term loans normally provide
for monthly payments of both principal and interest.



   
                                       213
    

<PAGE>   223

Roseville occasionally extends lines of credit to business customers. On
business credit lines, Roseville specifies a maximum amount which it stands
ready to lend to the customer during a specified period in return for which the
customer agrees to maintain its primary banking relationship with Roseville. The
purpose for which such loans will be used and the security therefore, if any,
are generally determined before Roseville's commitment is extended. Normally,
Roseville does not make loan commitments in material amounts for periods in
excess of one year.

REAL ESTATE LOANS. Real estate loans are primarily made for the purpose of
purchasing, improving or constructing single family residences, and commercial
and industrial properties.

Approximately 66% of Roseville's real estate construction loans consist of loans
secured by first trust deeds on the construction of owner-occupied single family
dwellings, and the remaining 34% consist of loans secured by first trust deeds
on speculative single family dwellings. Construction loans are generally written
with terms of six to twelve months and usually do not exceed a loan to appraised
value ratio of 75 to 80%. The risk associated with speculative construction
lending includes the borrower's inability to complete and sell the project, the
borrower's incorrect estimate of necessary construction funds and/or time for
completion, and economic changes, including depressed real estate values and
changes in interest rates. Management has established underwriting criteria to
minimize losses on speculative construction loans by lending only to experienced
developers with proven track records. To date Roseville has not suffered any
losses through its speculative real estate construction loans.

CONSUMER LOANS. Most consumer loans are short-term loans, made for a period of
up to five years. Automobile loans are normally made with up to a five-year
amortization period.

MATURITY OF LOANS AND SENSITIVITY OF LOANS TO CHANGES IN INTEREST RATES. The
following table sets forth the amounts of loans outstanding of Roseville as of
September 30, 1998 and December 31, 1997 which, based on the remaining scheduled
repayments of principal, have the ability to be repriced or are due in less than
one year, in one to five years, or in more than five years.

<TABLE>
<CAPTION>
(Dollars in              Less than         One Year to           After
thousands)                One Year         Five Years          Five Years           Total
                         ---------         -----------         ----------          -------
September 30, 1998
<S>                      <C>                <C>                <C>                <C>
Fixed rate                $ 5,443            $ 4,421            $ 4,130            $13,994
Variable                   15,664              1,092                418             17,174
                          -------            -------            -------            -------

         Total            $21,107            $ 5,513            $ 4,548            $31,168
                          =======            =======            =======            =======
</TABLE>


   
                                       214
    

<PAGE>   224
<TABLE>
<CAPTION>
(Dollars in              Less than         One Year to           After
thousands)                One Year         Five Years         Five Years           Total
                          -------          -----------        ----------          -------
<S>                       <C>                <C>                <C>                <C>
December 31, 1997

Fixed rate                $ 5,487            $ 5,668            $ 3,896            $15,051
Variable                   17,915              1,526                444             19,885
                          -------            -------            -------            -------

         Total            $23,402            $ 7,194            $ 4,340            $34,936
                          =======            =======            =======            =======
</TABLE>

LOAN COMMITMENTS. The following table shows Roseville's loan commitments at the
dates indicated:

<TABLE>
<CAPTION>
                                             September 30,                                   December 31,
                                      --------------------------            ---------------------------------------------
(Dollars in thousands)                  1998               1997               1997              1996                1995
                                      -------            -------            -------            -------            -------
<S>                                  <C>                <C>                <C>                <C>                <C>
Commercial                            $ 1,433            $ 1,391            $ 1,208            $ 1,107            $ 1,058
Real estate                            10,256              8,191              9,668              5,207              2,877
Consumer                                   66                165                165                195                296
                                      -------            -------            -------            -------            -------
         Total commitments            $11,755            $ 9,747            $10,986            $ 6,509            $ 4,231
                                      =======            =======            =======            =======            =======
</TABLE>

Based upon prior experience and prevailing economic conditions, it is
anticipated that approximately 45% of the commitments at September 30, 1998 will
be exercised during 1998. All commercial commitments in the preceding table are
commitments to grant such loans.

SUMMARY OF LOAN LOSSES EXPERIENCE. As a natural corollary to Roseville's lending
activities, some loan losses are experienced. The risk of loss varies with the
type of loan being made and the creditworthiness of the borrower over the term
of the loan. To some extent, the degree of perceived risk is taken into account
in establishing the structure of, and interest rates and security for, specific
loans and for various types of loans. Roseville attempts to minimize its credit
risk exposure by use of thorough loan application and approval procedures.

Roseville maintains a program of systematic review of its existing loans. Loans
are graded for their overall quality. Those loans which Roseville's management
determines require further monitoring and supervision are segregated and
reviewed on a periodic basis. Significant problem loans are reviewed on a
monthly basis by Roseville's Loan Committee. Loans for which it is probable that
Roseville will be unable to collect all amounts due (including principal and
interest) are considered to be impaired. The recorded investment in impaired
loans totaled $76 thousand and $550 thousand at September 30, 1998 and December
31, 1997. In addition, when principal or interest on a loan is past due 90 days
or more, such loan is placed on nonaccrual status unless it is both well-secured
and in the process of collection. No loans were on nonaccrual status as of
September 30, 1998 and December 31, 1997, respectively.

Financial difficulties encountered by certain borrowers may cause Roseville to
restructure the terms of their loans to facilitate loan payments. As of December
31, 1997 and 1996, Roseville had no troubled debt restructured loans. Interest
foregone on nonaccrual loans and troubled debt restructurings outstanding during
the nine months ended September 30, 1998 and the years ended December 31, 1997
and 1996 were not significant.


   
                                       215
    

<PAGE>   225

Roseville charges off that portion of any loan which management or bank
examiners consider to represent a loss. A loan is generally considered by
management to represent a loss in whole or in part when an exposure beyond any
collateral value is apparent, servicing of the unsecured portion has been
discontinued or collection is not anticipated based on the borrower's financial
condition and general economic conditions in the borrower's industry. The
principal amount of any loan which is declared a loss is charged against
Roseville's allowance for loan losses.

The following table sets forth the amount of loans on Roseville's books which
were 30 days or more past due at the dates indicated:

<TABLE>
<CAPTION>
                                                                       December 31,
                                      September 30,           ------------------------------
(Dollars in thousands)                    1998                  1997                  1996
                                      -------------           --------              --------
<S>                                   <C>                     <C>                  <C>
Commercial                                $  8                  $ 31                  $ 15
Real estate                                 90                   117                   188
Consumer                                    36                    43                    17
                                          ----                  ----                  ----
         Total                            $134                  $191                  $220
                                          ====                  ====                  ====
</TABLE>

The following table sets forth the amount of loans on Roseville's books which
were on nonaccrual status at the dates indicated:

<TABLE>
<CAPTION>
                                                                       December 31,
                                      September 30,           ------------------------------
(Dollars in thousands)                    1998                  1997                  1996
                                      -------------           --------              --------
<S>                                   <C>                     <C>                  <C>

Commercial                                $  0                  $  0                  $  0
Real estate                                  0                     0                   190
Consumer                                     0                     0                     0
                                          ----                  ----                  ----
         Total                            $  0                  $  0                  $190
                                          ====                  ====                  ====
</TABLE>



   
                                       216
    

<PAGE>   226
The following table summarizes Roseville's loan loss experience for the periods
indicated:

<TABLE>
<CAPTION>
                                              Nine Months Ended
                                                 September 30,                    Year Ended December 31,
                                            ----------------------        -------------------------------------
(Dollars in thousands)                        1998          1997            1997           1996           1995
                                            -------        -------        -------        -------        -------
                                                 (Unaudited)
<S>                                         <C>            <C>            <C>            <C>            <C>
BALANCES
  Loans:
    Average loans                           $33,359        $30,245        $31,028        $23,986        $20,172
    Loans at end of period                   31,168         31,930         34,936         27,480         23,003
  Loans charged off                             540             95            101             30             40
  Recoveries of loans previously
   charged off                                    7              6              7              9             12
  Net loans charged off                         533             89             94             21             28
  Allowance for loan losses                     296            291            724            254            185
    Provisions for loan losses                  105            126            564             89             55
  Ratios:(1)
    Net loan charge-offs to
     average loans                             2.13%           .39%           .30%           .09%           .14%
    Net loan charge-offs to
     loans at end of period                    2.28%           .37%           .27%           .08%           .12%
    Allowance for loan losses
     to average loans                           .89%           .96%          2.33%          1.06%           .92%
    Allowance for loan losses
     to loans at end of period                  .95%           .91%          2.07%           .92%           .80%
    Net loan charge-offs to allowance
     for loan losses                         240.09%         40.78%         12.98%          8.27%         15.14%
    Net loan charge-offs to provision
     for loan losses                         507.62%         70.63%         16.67%         23.60%         50.91%
</TABLE>

- -------------------

(1)     Annualized for the nine months ended September 30, 1997. Ratios were not
        annualized for the nine months ended September 30, 1998 due to the
        impact of a one time charge-off of approximately $481 thousand.


   
                                       217
    

<PAGE>   227

Roseville's allowance for loan losses is established to provide for loan losses
which can be reasonably anticipated. The allowance for loan losses is
established through charges to operating expenses in the form of provisions for
loan losses. Provisions for loan losses amounted to $564 thousand in 1997, $89
thousand in 1996 and $105 thousand for the first nine months of 1998. The
provisions have been increasing reflecting, in the opinion of management of
Roseville, the growth of the loan portfolio. Actual loan losses or recoveries
are charged or credited, respectively, directly to the allowance for loan
losses. The amount of the allowance is determined by management of Roseville.
Among the factors considered in determining the allowance for loan losses are
the current financial conditions of Roseville's borrowers and the value of the
security, if any, for their loans. Estimates of future economic conditions and
their impact on various industries and individual borrowers are also taken into
consideration, as are Roseville's historical loan loss experience and reports of
banking regulatory authorities. Because these estimates and evaluations are
primarily judgmental factors, no assurance can be given that Roseville may not
sustain loan losses substantially higher in relation to the size of the
allowance for loan losses or that subsequent evaluation of the loan portfolio
may not require substantial changes in such allowance.

At December 31, 1997, 1996 and 1995, the allowance was 2.07%, .92%, and .80%, of
the loans then outstanding, respectively. At September 30, 1998, the allowance
was .95% of the loans then outstanding. Although the current level of the
allowance is deemed adequate by management, future provisions will be subject to
continuing reevaluation of risks in the loan portfolio.

Management of Roseville reviews with the Board of Directors the adequacy of the
allowance for loan losses on a monthly basis and adjusts the loan loss provision
upward where specific items reflect a need for such an adjustment. Management of
Roseville charged off $101 thousand in 1997, $30 thousand in 1996 and $540
thousand in the first nine months of 1998. Recoveries of loans previously
charged off were $7 thousand in 1997, $9 thousand in 1996 and $7 thousand during
the first nine months of 1998. Charge-offs continued to increase in 1998;
however, management does not believe there has been any significant
deterioration in Roseville's loan portfolio as the charge-off of $481 thousand
involved a single commercial loan. Management also believes that Roseville has
adequately reserved for all individual items in its portfolio which may result
in a loss material to Roseville. See "Description of Roseville--Management's
Discussion and Analysis of Financial Condition and Results of
Operations--Provision for Loan Losses".

INVESTMENT SECURITIES. Roseville has invested an average of $3.73 million in
federal instruments, securities issued by states and political subdivisions,
other debt securities and bank certificates of deposit, which yielded
approximately 6.22% per annum during the first nine months of 1998. Roseville's
present investment policy is to invest excess funds in federal funds,
certificates of deposits in financial institutions, U.S. Treasuries, securities
issued by the U.S. Government and securities issued by states and political
subdivisions.


   
                                       218
    
<PAGE>   228

INTEREST RATES AND DIFFERENTIALS. Certain information concerning
interest-earning assets and interest-bearing liabilities and yields thereon
(unaudited) is set forth in the following table. Amounts outstanding are daily
average balances:

<TABLE>
<CAPTION>
                                               Nine Months Ended
                                               September 30,(1)                 Year Ended December 31,
(Dollars in thousands)                      ----------------------        -------------------------------------
(Unaudited)                                  1998            1997           1997           1996           1995
                                            -------        -------        -------        -------        -------
<S>                                        <C>            <C>            <C>            <C>            <C>
Interest-earning assets:
  Interest-earning deposits:
         Average outstanding                $     0        $     0        $     0        $    99        $   207
         Average yield                            0%             0%             0%          6.06%          6.28%
         Interest income                    $     0        $     0        $     0        $     6        $    13
  Federal funds sold:
         Average outstanding                $ 7,023        $ 4,983        $ 6,072        $ 4,632        $ 3,833
         Average yield                         5.54%          5.62%          5.63%          5.42%          5.90%
         Interest income                    $   292        $   210        $   342        $   251        $   226
  Investment securities:
         Average outstanding                $ 3,732        $ 4,252        $ 4,197        $ 3,531        $ 4,706
         Average yield                         6.22%          6.33%          6.34%          6.40%          5.57%
         Interest income                    $   174        $   202        $   266        $   226        $   262
  Loans:
         Average outstanding                $33,359        $30,245        $31,028        $23,986        $20,172
         Average yield(2)                     10.09%         10.72%         10.59%         10.61%         10.72%
         Interest income                    $ 2,524        $ 2,432        $ 3,286        $ 2,545        $ 2,163
  Total interest-earning assets:
         Average outstanding                $44,114        $39,480        $41,297        $32,248        $28,918
         Average yield                         9.04%          9.60%          9.43%          9.39%          9.21%
         Interest income                    $ 2,990        $ 2,844        $ 3,894        $ 3,028        $ 2,664
Interest-bearing liabilities:
  NOW and money market
   demand accounts:
         Average outstanding                $23,591        $20,780        $16,230        $12,270        $ 9,305
         Average yield                         2.46%          3.00%          3.91%          4.00%          4.55%
         Interest expense                   $   436        $   467        $   635        $   491        $   423
  Savings deposits:
         Average outstanding                $ 1,034        $   822        $   838        $   568        $   316
         Average yield                         2.97%          3.08%          2.98%          2.99%          3.16%
         Interest expense                   $    23        $    19        $    25        $    17        $    10
  Time deposits:
         Average outstanding                $20,092        $17,095        $17,929        $14,834        $14,895
         Average yield                         5.60%          5.55%          5.60%          5.55%          5.74%
         Interest expense                   $   844        $   712        $ 1,004        $   823        $   855
  Total interest-bearing liabilities:
         Average outstanding                $44,717        $38,697        $34,997        $27,672        $24,516
         Average yield                         3.89%          4.13%          4.75%          4.81%          5.25%
         Interest expense                   $ 1,303        $ 1,198        $ 1,664        $ 1,331        $ 1,288
Net interest income                         $ 1,687        $ 1,646        $ 2,230        $ 1,697        $ 1,376
  Average net yield on
   interest-earning assets(2)                  5.10%          5.56%          5.40%          5.26%          4.76%
</TABLE>

- ---------------

(1)     Nine month yields have been annualized.

(2)     Roseville has originated a high volume of loans during this period that
        have been sold rather than held in the loan portfolio. Since loan sales
        premiums are recorded as other income, interest income is less than if
        the loans were retained. This lowers the average yield on loans and
        average net yield on interest-earning assets.


   
                                       219
    

<PAGE>   229

LIQUIDITY MANAGEMENT. Roseville has federal funds lines of credit with its
correspondent banks, Pacific Coast Bankers Bank of $1.00 million, Compass Bank
of $1.00 million and Union Bank of California, of $1.00 million. In addition,
Roseville has arranged for advances from Federal Home Loan Bank under their
blanket lien on loans program. As of September 30, 1998 Roseville's advance
maximum was $3.38 million. These lines have never been used. At times when
Roseville has excess funds over its reserve requirements or short-term liquidity
needs, Roseville increases its securities investments and/or sells federal
funds.

Policies have been developed by Roseville's management and approved by the Board
of Directors which establish guidelines for the investments and liquidity of
Roseville. These policies include an Investment Policy and an Asset Liability
Policy. The goals of these policies are to provide liquidity to meet the
financial requirements of Roseville's customers, maintain adequate reserves as
required by regulatory agencies and maximize earnings of Roseville.

The following table shows Roseville's average deposits (unaudited) for each of
the periods indicated below, based upon average daily balances:

<TABLE>
<CAPTION>
                                      Nine Months Ended 
                                        September 30,                                  Year Ended December 31,
                          ---------------------------------------   -------------------------------------------------------------
(Dollars in thousands)            1998                 1997                 1997                1996                 1995
(Unaudited)               ------------------   ------------------   ------------------   ------------------   -------------------
                          Average   Percent    Average    Percent   Average    Percent   Average    Percent   Average    Percent
                          Balance   of Total   Balance   of Total   Balance   of Total   Balance   of Total   Balance    of Total
                          -------   --------   -------   --------   -------   --------   -------   --------   -------    --------
<S>                      <C>       <C>        <C>       <C>        <C>       <C>        <C>        <C>       <C>        <C>
Demand deposits           $ 7,943     17.76%   $ 4,875     12.60%   $ 5,351     13.26%   $ 3,687     11.76%   $ 2,862     10.45%
NOW and Super
 NOW accounts               3,496      7.82%     2,821      7.29%     2,911      7.21%     2,380      7.59%     1,681      6.14%
Savings deposits            1,034      2.31%       822      2.12%       838      2.08%       568      1.81%       316      1.15%
Money market
 deposits                  12,152     27.18%    13,084     33.81%    13,319     33.01%     9,890     31.54%     7,624     27.85%
Time deposits              20,092     44.93%    17,095     44.18%    17,929     44.44%    14,834     47.30%    14,895     54.41%
                          -------              -------              -------              -------              -------
    Total deposits        $44,717    100.00%   $38,697    100.00%   $40,348    100.00%   $31,359    100.00%   $27,378    100.00%
                          =======              =======              =======              =======              =======
</TABLE>

LIABILITY MANAGEMENT. It is management's policy to maintain the maturities of a
majority of its certificates of deposit in denominations of $100,000 or more to
less than one year. The maturities of such time certificates of deposit
("TCD's"), as well as other time deposits, were as follows:

<TABLE>
<CAPTION>
                                      September 30, 1998                   December 31, 1997
                                  ---------------------------           ---------------------------
                                    TCD's             Other               TCD's             Other
(Dollars in thousands)              over              Time                over              Time
(Unaudited)                       $100,000           Deposits           $100,000           Deposits
                                  --------           --------           --------           --------
<S>                              <C>                <C>                <C>                <C>
Less than three months            $ 2,024            $ 2,991            $ 2,902            $ 5,549
Over three months
 through twelve months              3,718              8,034              3,002              7,602
Over twelve months
 through five years                   817              2,349                621              1,085
Over five years                         0                  1                  0                 10
                                  -------            -------            -------            -------
         Total                    $ 6,559            $13,375            $ 6,525            $14,246
                                  =======            =======            =======            =======
</TABLE>


                                      220
<PAGE>   230

While the deposits of Roseville may fluctuate up and down somewhat with local
and national economic conditions, management of Roseville does not believe that
such deposits, or the business of Roseville in general, are seasonal in nature.
Liability management is monitored by Roseville's Board of Directors which meets
monthly.

REGULATORY MATTERS.

Capital Adequacy. The Comptroller and other federal banking agencies have
risk-based capital adequacy guidelines intended to provide a measure of capital
adequacy that reflects the degree of risk associated with a banking
organization's operations for both transactions reported on the balance sheet as
assets and transactions, such as letters of credit and recourse arrangements,
which are recorded as off balance sheet items. Under these guidelines, nominal
dollar amounts of assets and credit equivalent amounts of off balance sheet
items are multiplied by one of several risk adjustment percentages, which range
from 0% for assets with low credit risk, such as certain U.S. government
securities, to 100% for assets with relatively higher credit risk, such as
certain loans.

In determining the capital level Roseville 1st National Bank is required to
maintain, the Comptroller does not, in all respects, follow generally accepted
accounting principles ("GAAP") and has special rules which have the effect of
reducing the amount of capital it will recognize for purposes of determining the
capital adequacy of Roseville 1st National Bank.

A banking organization's risk-based capital ratios are obtained by dividing its
qualifying capital by its total risk-adjusted assets and off balance sheet
items. The regulators measure risk-adjusted assets and off balance sheet items
against both total qualifying capital (the sum of Tier 1 capital and limited
amounts of Tier 2 capital) and Tier 1 capital. Tier 1 capital consists of common
stock, retained earnings, noncumulative perpetual preferred stock, other types
of qualifying preferred stock and minority interests in certain subsidiaries,
less most other intangible assets and other adjustments. Net unrealized losses
on available-for-sale equity securities with readily determinable fair value
must be deducted in determining Tier 1 capital. For Tier 1 capital purposes,
deferred tax assets that can only be realized if an institution earns sufficient
taxable income in the future are limited to the amount that the institution is
expected to realize within one year, or ten percent of Tier 1 capital, whichever
is less. Tier 2 capital may consist of a limited amount of the allowance for
possible loan and lease losses, term preferred stock and other types of
preferred stock not qualifying as Tier 1 capital, term subordinated debt and
certain other instruments with some characteristics of equity. The inclusion of
elements of Tier 2 capital are subject to certain other requirements and
limitations of the federal banking agencies. The federal banking agencies
require a minimum ratio of qualifying total capital to risk-adjusted assets and
off balance sheet items of 8%, and a minimum ratio of Tier 1 capital to adjusted
average risk-adjusted assets and off balance sheet items of 4%.

On September 16, 1997, the FDIC adopted a final rule lowering the risk-based
capital requirements for certain small business loans and leases sold with
recourse. The final rule on small business loans and leases sold with recourse
essentially makes permanent an interim interagency rule in effect since 1995
that reduced the minimum capital levels that institutions must maintain for
those transactions. Under the final rule, a qualifying institution that sells
small business loans and leases with recourse must hold capital only against the
amount of recourse retained. In general, a qualifying institution is one that is
well-capitalized under the FDIC's


   
                                       221
    

<PAGE>   231

prompt corrective action rules. The amount of recourse that can receive the
preferential capital treatment cannot exceed 15% of the institution's total
risk-based capital.

In addition to the risked-based guidelines, federal banking regulators require
banking organizations to maintain a minimum amount of Tier 1 capital to adjusted
average total assets, referred to as the leverage capital ratio. For a banking
organization rated in the highest of the five categories used by regulators to
rate banking organizations, the minimum leverage ratio of Tier 1 capital to
total assets must be 3%. It is improbable, however, that an institution with a
3% leverage ratio would receive the highest rating by the regulators since a
strong capital position is a significant part of the regulators' rating. For all
banking organizations not rated in the highest category, the minimum leverage
ratio must be at least 100 to 200 basis points above the 3% minimum. Thus, the
effective minimum leverage ratio, for all practical purposes, must be at least
4% or 5%. In addition to these uniform risk-based capital guidelines and
leverage ratios that apply across the industry, the regulators have the
discretion to set individual minimum capital requirements for specific
institutions at rates significantly above the minimum guidelines and ratios.

The following table presents the capital ratios for Roseville, compared to the
standards for well-capitalized depository institutions, as of September 30, 1998
(amounts in thousands except percentage amounts).

<TABLE>
<CAPTION>
                                                       Roseville
                             -----------------------------------------------------------------
                                      Actual                        Well            Minimum
                             -------------------------          Capitalized          Capital
                             Capital             Ratio             Ratio           Requirement
                             ------              -----          -----------        -----------
<S>                         <C>                  <C>                <C>                <C>
Leverage                     $4,565               9.3%               5.0%               4.0%
Tier 1 Risk-Based            $4,565              11.7                6.0                4.0
Total Risk-Based             $4,860              12.4               10.0                8.0
</TABLE>


Regulators must take into consideration concentrations of credit risk and risks
from nontraditional activities, as well as an institution's ability to manage
those risks, when determining the adequacy of an institution's capital. This
evaluation will be made as a part of the institution's regular safety and
soundness examination. Regulators must also consider interest rate risk (when
the interest rate sensitivity of an institution's assets does not match the
sensitivity of its liabilities or its off-balance-sheet position) in evaluation
of a bank's capital adequacy.

Prompt Corrective Action and Other Enforcement Mechanisms. The FDIC Improvement
Act of 1991 ("FDICIA") requires each federal banking agency to take prompt
corrective action to resolve the problems of insured depository institutions,
including but not limited to those that fall below one or more prescribed
minimum capital ratios. The law required each federal banking agency to
promulgate regulations defining the following five categories in which an
insured depository institution will be placed, based on the level of its capital
ratios: well capitalized, adequately capitalized, undercapitalized,
significantly undercapitalized and critically undercapitalized.


   
                                       222
    

<PAGE>   232

Under the prompt corrective action provisions of FDICIA, an insured depository
institution generally will be classified in the following categories based on
the capital measures indicated below:

<TABLE>
<S>                                            <C>
 "Well capitalized"                             "Adequately capitalized"
 ------------------                             ------------------------
 Total risk-based capital of 10%;               Total risk-based capital of 8%;
 Tier 1 risk-based capital of 6%; and           Tier 1 risk-based capital of 4%; and
 Leverage ratio of 5%.                          Leverage ratio of 4%.

 "Undercapitalized"                             "Significantly undercapitalized"
 ------------------                             --------------------------------
 Total risk-based capital less than 8%;         Total risk-based capital less than 6%;
 Tier 1 risk-based capital less than 4%; or     Tier 1 risk-based capital less than 3%; or
 Leverage ratio less than 4%.                   Leverage ratio less than 3%.

 "Critically undercapitalized"
 -----------------------------
 Tangible equity to total assets less than 2%.
</TABLE>


An institution that, based upon its capital levels, is classified as "well
capitalized," "adequately capitalized" or "under-capitalized" may be treated as
though it were in the next lower capital category if the appropriate federal
banking agency, after notice and opportunity for hearing, determines that an
unsafe or unsound condition or an unsafe or unsound practice warrants such
treatment. At each successive lower capital category, an insured depository
institution is subject to more restrictions.

In addition to measures taken under the prompt corrective action provisions,
commercial banking organizations may be subject to potential enforcement actions
by the federal regulators for unsafe or unsound practices in conducting their
businesses or for violations of any law, rule, regulation or any condition
imposed in writing by the agency or any written agreement with the agency.
Enforcement actions may include the imposition of a conservator or receiver, the
issuance of a cease-and-desist order that can be judicially enforced, the
termination of insurance of deposits (in the case of a depository institution),
the imposition of civil money penalties, the issuance of directives to increase
capital, the issuance of formal and informal agreements, the issuance of removal
and prohibition orders against institution-affiliated parties and the
enforcement of such actions through injunctions or restraining orders based upon
a judicial determination that the agency would be harmed if such equitable
relief was not granted. Additionally, a holding company's inability to serve as
a source of strength to its subsidiary banking organizations could serve as an
additional basis for a regulatory action against the holding company.

Safety and Soundness Standards. FDICIA also implemented certain specific
restrictions on transactions and required federal banking regulators to adopt
overall safety and soundness standards for depository institutions related to
internal control, loan underwriting and documentation and asset growth. Among
other things, FDICIA limits the interest rates paid on deposits by
undercapitalized institutions, restricts the use of brokered deposits, limits
the aggregate extensions of credit by a depository institution to an executive
officer, director, principal shareholder or related interest, and reduces
deposit insurance coverage for deposits offered by undercapitalized institutions
for deposits by certain employee benefits accounts.



   
                                       223
    

<PAGE>   233

The federal banking agencies may require an institution to submit to an
acceptable compliance plan as well as the flexibility to pursue other more
appropriate or effective courses of action given the specific circumstances and
severity of an institution's noncompliance with one or more standards.

Premiums for Deposit Insurance and Assessments for Examinations. FDICIA
established several mechanisms to increase funds to protect deposits insured by
the BIF administered by the FDIC. The FDIC is authorized to borrow up to $30
billion from the United States Treasury; up to 90% of the fair market value of
assets of institutions acquired by the FDIC as receiver from the Federal
Financing Bank; and from depository institutions that are members of the BIF.
Any borrowings not repaid by asset sales are to be repaid through insurance
premiums assessed to member institutions. Such premiums must be sufficient to
repay any borrowed funds within 15 years and provide insurance fund reserves of
$1.25 for each $100 of insured deposits. FDICIA also provides authority for
special assessments against insured deposits. No assurance can be given at this
time as to what the future level of premiums will be.

Dividends. The power of the board of directors of an insured depository
institution to declare a cash dividend or other distribution with respect to
capital is subject to statutory and regulatory restrictions which limit the
amount available for such distribution depending upon the earnings, financial
condition and cash needs of the institution, as well as general business
conditions. FDICIA prohibits insured depository institutions from paying
management fees to any controlling persons or, with certain limited exceptions,
making capital distributions, including dividends, if, after such transaction,
the institution would be undercapitalized.

Regulators also have authority to prohibit a depository institution from
engaging in business practices which are considered to be unsafe or unsound,
possibly including payment of dividends or other payments under certain
circumstances even if such payments are not expressly prohibited by statute.

The payment of dividends by a national bank is further restricted by additional
provisions of federal law, which prohibit a national bank from declaring a
dividend on its shares of common stock unless its surplus fund exceeds the
amount of its common capital (total outstanding common shares times the par
value per share). Additionally, if losses have at any time been sustained equal
to or exceeding a bank's undivided profits then on hand, no dividend shall be
paid. Moreover, even if a bank's surplus exceeded its common capital and its
undivided profits exceed its losses, the approval of the Comptroller is required
for the payment of dividends if the total of all dividends declared by a
national bank in any calendar year would exceed the total of its net profits of
that year combined with its retained net profits of the two preceding years,
less any required transfers to surplus or a fund for the retirement of any
preferred stock. A national bank must consider other business factors in
determining the payment of dividends. The payment of dividends by Roseville 1st
National Bank is governed by Roseville 1st National Bank's ability to maintain
minimum required capital levels and an adequate allowance for loan losses.
Regulators also have authority to prohibit a depository institution from
engaging in business practices which are considered to be unsafe or unsound,
possibly including payment of dividends or other payments under certain
circumstances even if such payments are not expressly prohibited by statute.


   
                                       224
    

<PAGE>   234
Reserve Balances. Roseville 1st National Bank has not been required to maintain
average reserve balances with the FRB because Roseville 1st National Bank has
had adequate vault cash to meet the reserve requirements.

   
Year 2000 Compliance. The "Year 2000 issue" relates to the fact that many
computer programs use only two digits to represent a year, such as "98" to
represent "1998," which means that in the Year 2000 such programs could
incorrectly treat the Year 2000 as the year 1900. This issue has grown in
importance as the use of computers and microchips has become more pervasive
throughout the economy, and interdependencies between systems have multiplied.
The issue must be recognized as a business problem, rather than simply a
computer problem, because of the way its effects could ripple through the
economy. Roseville could be materially and adversely affected either directly or
indirectly by the Year 2000 issue. This could happen if any of its critical
computer systems or equipment containing preprogrammed computer chips fail, if
the local infrastructure (electric power, phone system, or water system) fails,
if its significant vendors are adversely impacted, or if its borrowers or
depositors are adversely impacted by their internal systems or those of their
customers or suppliers. Failure of Roseville to complete testing and renovation
of its critical systems on a timely basis could have a material adverse effect
on Roseville's financial condition and results of operations, as could Year 2000
problems faced by others with whom Roseville does business.
    

Federal banking regulators have responsibility for supervision and examination
of banks to determine whether each institution has an effective plan for
identifying, renovating, testing and implementing solutions for Year 2000
processing and coordinating Year 2000 processing capabilities with its
customers, vendors and payment system partners. Bank examiners are also required
to assess the soundness of a bank's internal controls and to identify whether
further corrective action may be necessary to assure an appropriate level of
attention to Year 2000 processing capabilities.

   
Roseville has a written plan to address its risks associated with the impact of
the Year 2000. The plan directs Roseville's Year 2000 compliance efforts under
the framework of a five-step program mandated by the Federal Financial
Institutions Examination Council ("FFIEC"). The FFIEC'S five-step program
consists of five phases: awareness, assessment, renovation, validation and
implementation. In the awareness phase, which Roseville has completed, the Year
2000 problem is defined and executive level support for the necessary resources
to prepare Roseville for Year 2000 compliance is obtained. In the assessment
phase, which Roseville has also completed, the size and complexity of the
problem and details of the effort necessary to address the Year 2000 issues are
assessed. Although the awareness and assessment phases are completed, Roseville
continues to evaluate new issues as they arise. In the renovation phase, which
Roseville has substantially completed, the required incremental changes to
hardware and software components are tested. In the validation phase, which
Roseville has also substantially completed, the hardware and software components
are tested. The implementation phase, which applies to changes in hardware and 
software components being installed, is 80% completed.

Roseville is utilizing both internal and external resources to identify, correct
or reprogram, and test its systems for Year 2000 compliance. Roseville has
identified 13 vendors and 25 software applications which management believes are
material to its operations. Based on information received from its vendors and
testing results, Roseville believes approximately 85% of such vendors are Year
2000 compliant as of December 31, 1998. Testing of the critical system
    


   
                                       225
    

<PAGE>   235
   
applications for the core banking product provided by Roseville's primary vendor
was completed and the results verified during December 1998 and January 1999.
The core banking product includes software solutions for general ledger,
automated clearing house, certificates of deposit and individual retirement
accounts, commercial, mortgage and installment loans, checking and savings
accounts, proof of deposit applications and ancillary support products.

Roseville has identified two vendors which it does not believe are fully Year
2000 compliant as of December 31, 1998. One of these vendors is material to
Roseville's operations. Each of these vendors has advised Roseville that it has
completed the evaluation and renovation stages of Year 2000 compliance and is in
the implementation and validation phases and is expected to complete the final
validation phase by June 30, 1999. By March 31, 1999, Roseville will make a
decision on engaging an alternate service provider if these vendors are still
considered a risk.
    

Roseville is also making efforts to ensure that its customers, particularly its
significant customers, are aware of the Year 2000 problem. Roseville has sent
Year 2000 correspondence to its significant deposit and loan customers. A
customer of Roseville is deemed significant if the customer possesses any of the
following characteristics:

- -       Total indebtedness of $250,000 or more.

- -       The customer's business is dependent on the use of high technology
        and/or the electronic exchange of information.

- -       The customer's business is dependent on third party providers of data
        processing services or products.

- -       Business accounts with an average ledger deposit balance greater than
        $100,000.

   
Roseville has amended its credit authorization documentation to include
consideration of the Year 2000 problem. Roseville assesses its significant
customer's Year 2000 readiness and assigns the customer an assessment of "low,"
"medium" or "high" risk. Risk evaluation of Roseville's significant customers
was substantially completed by December 31, 1998. Any customer determined to
have a high or medium risk is scheduled for an evaluation by Roseville every 90
days until the customer can be assigned a low risk assessment. Of the twenty
significant customers assessed, three customers with loans totaling $385,993 in
the high or medium risk categories have been rated below satisfactory in their
Year 2000 plan progress. These customers are being monitored during the first
quarter of 1999.
    

Because of the range of possible issues and large number of variables involved,
it is impossible to quantify the total potential cost of Year 2000 problems or
to determine Roseville's worst-case scenario in the event Roseville's Year 2000
remediation efforts or the efforts of those with whom it does business are not
successful. In order to deal with the uncertainty associated with the Year 2000
problem, Roseville has developed a contingency plan to address the possibility
that efforts to mitigate the Year 2000 risk are not successful either in whole
or part. These plans include manual processing of information for critical
information technology systems and increased cash on hand. The contingency plans
are expected to be completed by March 31, 1999, after which the appropriate
implementation training is scheduled to take place.

   
    


   
                                       226
    

<PAGE>   236
   
Because Roseville upgraded the hardware and software for its major banking
applications in the fourth quarter of 1997 with Year 2000 compliant products,
its Year 2000 costs have not been significant. As of September 30, 1998,
Roseville has incurred approximately $2,000 in Year 2000 costs, which have been
expensed as incurred. Year 2000-related costs have been funded from the
continuing operations of Roseville and, as of September 30, 1998, have
constituted less than 2% of Roseville's information systems budget for 1998.
Roseville estimates that its costs to complete Year 2000 compliance will be
approximately $10,000. This estimate includes the cost of purchasing hardware
and upgrading licenses for software, the overtime cost of internal staff and the
cost of consultants. The estimate does not include the time that internal staff
are devoting to testing programming changes. Testing is not expected to add
significant incremental costs.
    

Quantitative and Qualitative Disclosures About Market Risk. Market risk is the
risk of loss from adverse changes in market prices and rates. Roseville's market
risk arises primarily from interest rate risk inherent in its loan and deposit
functions and management actively monitors and manages this interest rate risk
exposure. Roseville does not have any market risk sensitive instruments entered
into for trading purposes. Management uses several different tools to monitor
its interest rate risk. One measure of exposure to interest rate risk is gap
analysis. A positive gap for a given period means that the amount of
interest-earning assets maturing or otherwise repricing within such period is
greater than the amount of interest-bearing liabilities maturing or otherwise
repricing within the same period. Roseville has a positive gap. In addition,
Roseville uses interest rate shock simulations to estimate the effect of certain
hypothetical rate changes. Based upon Roseville's shock simulations, net
interest income is expected to rise with increasing rates and fall with
declining rates.

Roseville's positive gap is the result of 32% of its loans and 75% of its
investments having terms greater than one year on the asset side. On the
liability side, the majority of the Roseville's time deposits have average terms
of one year or less while savings accounts and other interest-bearing
transaction accounts are recorded for gap analysis in the next day to three
month category because they do not have a contractual maturity date.

Taking into consideration that savings accounts and other interest-bearing
transaction accounts typically do not react immediately to changes in interest
rates, management has taken the following steps to manage its positive gap
position. Emphasis has been placed on increasing noninterest-bearing deposits
and shorter term construction and floating rate loans. In addition, Roseville
holds all of its investments in the available-for-sale category in order to be
able to match its investments with changes which occur in the repricing of its
liabilities.

The following table sets forth the distribution of repricing opportunities of
Roseville's interest-earning assets and interest-bearing liabilities, the
interest rate sensitivity gap (i.e. interest rate sensitive assets less interest
rate sensitive liabilities), the cumulative interest rate sensitivity gap and
the cumulative gap as a percentage of total interest-earning assets as of
December 31, 1997. The table also sets forth the time periods during which
interest-earning assets and interest-bearing liabilities will mature or may
reprice in accordance with their contractual terms. The interest rate
relationships between the repriceable assets and repriceable liabilities are not
necessarily constant. The table should, therefore, be used only as a guide as to
the possible effect changes in interest rates might have on the net margins of
Roseville.

   
                                       227
    

<PAGE>   237


<TABLE>
<CAPTION>
                                                                          December 31, 1997
                                                         ------------------------------------------------------------------
                                                                       Over Three
                                                                          Months         Over
                                                         Next Day        Through       One Year
(Dollars in thousands)                                   to Three        Twelve         Through       Over
(Unaudited)                                               Months         Months       Five Years    Five Years       Total
                                                         --------       --------      ----------    ----------     --------
<S>                                                     <C>            <C>            <C>           <C>           <C>

Assets:
         Federal funds sold                              $  6,720                                                  $  6,720
         Investment securities                                521       $    501       $  2,754      $    234         4,010
         Loans                                             16,524          7,078          7,065         4,269        34,936
                                                         --------       --------       --------      --------      --------
                  Total interest-earning assets            23,765          7,579          9,819         4,503        45,666
                                                         --------       --------       --------      --------      --------

Liabilities:
         Savings deposits(1)                               17,052                                                    17,052
         Time deposits                                      8,606         10,449          1,716                      20,771
                                                         --------       --------       --------      --------      --------
                  Total interest-bearing liabilities       25,658         10,449          1,716             0        37,823
                                                         --------       --------       --------      --------      --------

Net (interest-bearing liabilities)
 interest-earning assets                                 $ (1,893)      $ (2,870)      $  8,103      $  4,503      $  7,843
                                                         ========       ========       ========      ========      ========

Cumulative net (interest-bearing liabilities)
 interest-earning assets ("GAP")                         $ (1,893)      $ (4,763)      $  3,340      $  7,843
                                                         ========       ========       ========      ========

Cumulative GAP as a percentage of
 total interest-earning assets                              (4.15)%       (10.43)%         7.31%        17.17%
                                                         ========       ========       ========      ========
</TABLE>

- ----------------

(1)     Savings deposits include interest-bearing transaction accounts.


   
                                       228
    

<PAGE>   238

The following table sets forth the distribution of the expected maturities of
Roseville's interest-earning assets and interest-bearing liabilities as of
December 31, 1997 as well as the fair value of these instruments. Expected
maturities are based on contractual agreements. Savings accounts and
interest-bearing transaction accounts, which have no stated maturity, are
included in the 1998 maturity category.

                              EXPECTED MATURITIES

<TABLE>
<CAPTION>

(Dollars in thousands)
(Unaudited)                             1998        1999        2000        2001        2002     Thereafter    Total     Fair Value
                                      -------     -------     -------     -------     -------    ----------   -------    ----------
<S>                                  <C>         <C>         <C>         <C>         <C>        <C>          <C>        <C>
Federal funds sold                    $ 6,720                                                                 $ 6,720     $ 6,720
         Weighted average rate           5.56%                                                                   5.56%
Investment securities                 $ 1,256     $ 1,000                 $ 1,754                             $ 4,010     $ 4,010
         Weighted average rate           5.76%       6.28%                   6.57%                               6.25%
Fixed rate loans                      $ 5,487     $ 1,846     $ 1,231     $ 1,425     $ 1,166     $ 3,896     $15,051     $15,121
         Weighted average rate           8.31%       9.57%       9.55%       9.54%       9.50%       8.77%       8.87%
Variable rate loans(1)                $17,915     $   508     $   340     $   373     $   305     $   444     $19,885     $19,885
         Weighted average rate           9.93%       8.63%       8.58%       9.17%       9.21%       9.24%       9.85%

Total interest-bearing assets         $31,378     $ 3,354     $ 1,571     $ 3,552     $ 1,471     $ 4,340     $45,666     $45,736


Savings deposits(2)                   $17,052                                                                 $17,052     $17,052
         Weighted average rate           3.85%                                                                   3.85%
Time deposits                         $19,055     $   904     $   602     $   200                 $    10     $20,771     $20,812
         Weighted average rate           5.59%       5.84%       5.92%       5.76%                   5.12%       5.61%

Total interest-bearing liabilities    $36,107     $   904     $   602     $   200                 $    10     $37,823     $37,864
</TABLE>

- ------------

(1)     Of the total variable rate loans, 90.1% reprice in one year or less.

(2)     Savings deposits include interest-bearing transaction accounts.


   
                                       229
    

<PAGE>   239

MANAGEMENT

INFORMATION ON DIRECTORS AND EXECUTIVE OFFICERS. The following table sets forth
certain information, as of February 1, 1999, with respect to those persons who
are directors and executive officers of Roseville:


<TABLE>
<CAPTION>
         Name                     Age                                   Title
- ---------------------------       ---           ---------------------------------------------------
<S>                              <C>            <C>
Patrick I. Abare                  76            Director
Stephen F. Caulkins               54            Director
D. Mark Davis                     44            Director
Kirk Doyle                        45            Director
Howard "Skip" Jahn                53            Director
Ernest E. Johnson, M.D            68            Director
Kenneth Leung                     60            Director
Thomas Manz                       49            Chairman of the Board
James F. Otto                     61            Director
Randall H. Scagliotti, D.V.M.     52            Director
Richard C. Seeba                  60            Director, President and Chief Executive Officer 
Douglas A. Nordell(1)             50            Executive Vice President and Chief Operating Officer
Thomas C. Warren                  60            Senior Vice President and Chief Financial Officer
</TABLE>

- -----------------

   
(1)      Effective November 1, 1998, Mr. Nordell was granted an unpaid leave of
         absence (but remains an employee of Roseville) which will expire on the
         earlier of the Roseville Effective Time and April 30, 1999. Mr. Nordell
         is currently serving as the President and Chief Executive Officer of
         Lake Community.
    

The business experience of each of the directors and executive officers for the
past five years is described below.

   
PATRICK I. ABARE has been a director of Roseville since its inception in April
1997 and has served on the board of directors of Roseville 1st National Bank
since 1992. Mr. Abare has been retired since 1988. Prior to his retirement, Mr.
Abare had been employed in the banking industry for approximately 40 years.

STEPHEN F. CAULKINS has been a director of Roseville since its inception in
April 1997 and has served on the board of directors of Roseville 1st National
Bank since 1992. Mr. Caulkins owns and operates Ad Litho Press, a printing
company located in West Sacramento, California, a position he has held since
1981.
    

   
                                       230
    

<PAGE>   240
   
    

D. MARK DAVIS has been a director of Roseville since its inception in April 1997
and has served on the board of directors of Roseville 1st National Bank since
1995. Mr. Davis is the founder and President of Sierra View Company, Inc., a
commercial construction company, a position he has held since 1979.

KIRK DOYLE has been a director of Roseville since its inception in April 1997
and has served on the board of directors of Roseville 1st National Bank since
1994. Mr. Doyle is the founder and President of Kirk Doyle Realtor, a
residential real estate company located in Roseville, California, and has held
the position since 1983.

HOWARD JAHN has been a director of Roseville since its inception in April 1997
and has served on the board of directors of Roseville 1st National Bank since
1992. Mr. Jahn is a founder and member of Jackson and Jahn, LLC, a real estate
development company organized in 1997. Prior to his involvement with Jackson and
Jahn, LLC, Mr. Jahn was a senior vice president of CB Commercial, a commercial
real estate brokerage firm, for over 20 years.

ERNEST E. JOHNSON has been a director of Roseville since its inception in April
1997 and has served on the board of directors of Roseville 1st National Bank
since 1992. Mr. Johnson is a partner in Sacramento Ear, Nose and Throat Group, a
medical practice organized in 1962.

KENNETH LEUNG has served as a director of Roseville since April 1998. Mr. Leung
is Chief Executive Officer of Kwong on Bank, Ltd., in Hong Kong, a position he
has held for more than five years.

DOUGLAS A. NORDELL has served as the Executive Vice President and Chief
Operating Officer of Roseville since its inception in April 1997 and of
Roseville 1st National Bank since November 1994. He has over 22 years of
experience in the banking industry.

THOMAS MANZ has been Chairman of the Board of Roseville since its inception in
April 1997 and has served on the board of directors of Roseville 1st National
Bank since 1992. Mr. Manz is the founder and President of TJM Enterprises, a
real estate development company organized in 1993. From 1993 to 1997, Mr. Manz
was a general partner of Buzz Oates Enterprise, a partnership engaged in the
business of real estate development.

JAMES F. OTTO has been a director of Roseville since its inception in April 1997
and has served on the board of directors of Roseville 1st National Bank since
1992. Mr. Otto is currently employed with the Oakland Raiders football team, a
position he has held since 1993. From 1960 to 1974, Mr. Otto was employed as a
professional football player with the Oakland Raiders.

   
RANDALL H. SCAGLIOTTI has been a director of Roseville since its inception in
April 1997 and has served on the board of directors of Roseville 1st National
Bank since 1992. Mr. Scagliotti is a founder and co-owner of Sacramento Animal
Medical Group, a position he has held since 1977. He received his D.V.M. from
the University of California, Davis.
    

   
                                       231
    

<PAGE>   241
   
    

RICHARD C. SEEBA has served as President, Chief Executive Officer and a director
of Roseville since its inception in April 1997. He has served as President and
Chief Executive Officer of Roseville 1st National Bank since 1990 and has been a
director of Roseville 1st National Bank since 1992. Prior to joining Roseville 
1st National Bank, Mr. Seeba had been employed in the banking industry for over
25 years.

THOMAS C. WARREN has served as Senior Vice President and Chief Financial Officer
of Roseville since its inception in April 1997. From July 1996 to March 1998, he
served as Senior Vice President and Chief Financial Officer of Roseville 1st
National Bank. Prior to joining Roseville 1st National Bank, he was engaged as a
consultant to a community development bank and various start-up companies in San
Diego, California. Mr. Warren has served as a senior officer with the Federal
Reserve System and other financial institutions for over 30 years.

ROSEVILLE'S BOARD OF DIRECTORS AND COMMITTEES. Roseville's Board of Directors
met thirteen (13) times in 1997. All of Roseville's directors, except James
Otto, attended 75% or more of Roseville's Board of Directors' meetings and
committee meetings (of which they were members).

Roseville has an Audit Committee that met two (2) times during 1997. The purpose
of the Audit Committee is to review all internal and external examination
reports and to select Roseville's independent certified public accountants.
Current members of the Audit Committee are Messrs.
Caulkins and Otto and Dr. Scagliotti.

Roseville has an Executive Committee that met three (3) times in 1997. The
purpose of the Executive Committee is to review and recommend policy changes.
The current members of the Executive Committee are Messrs. Abare, Caulkins,
Davis, Doyle, Jahn, Manz and Seeba.

The full Board of Directors of Roseville acts as the Nominating Committee that
nominates officers and directors of Roseville and Roseville 1st National Bank
for election.

COMPENSATION OF DIRECTORS AND EXECUTIVE OFFICERS.

   
Director Compensation. In 1998, nonemployee directors receive director fees of
$300 for each Board of Directors or Board Committee meeting attended. Directors
who are also officers are not compensated for their services as directors. The
directors have been granted stock options: in 1990, Messrs. Abare (2,500
shares), Caulkins (2,500 shares), Johnson (2,500 shares), Manz (500 shares),
Otto (2,500 shares), Scagliotti (2,500 shares) and Seeba (15,833 shares) were
granted at an option price of $7.50 per share; in February 1994, Messrs. Abare,
Caulkins, Jahn and Manz were each granted 4,000 shares at an option price of
$7.50 per share; in February 1994, Messrs. Johnson, Otto, Scagliotti and Seeba
were each granted 3,000 shares at an option price of $7.50 per share; and in
November 1994, Mr. Doyle was granted 4,000 shares at a option price of $ 7.50
per share. These stock options have a term of ten years and are completely
vested at the end of five years. On September 30, 1998, the following directors
exercised options as follows: Messrs. Abare (6,500 shares); Doyle (4,000
shares); Jahn (4,000 shares); Johnson (5,500 shares); Otto (5,500 shares);
Scagliotti (5,500 shares); and Seeba (15,833 shares).
    


   
                                       232
    

<PAGE>   242
   
    

Executive Compensation. During 1997, Roseville did not pay any cash compensation
to its executive officers and no such cash compensation is expected to be paid
during 1998. However, the persons serving as the executive officers of Roseville
received during 1997, and have received in 1998, cash compensation in their
capacities as executive officers of Roseville 1st National Bank.

The following table sets forth a summary of the compensation paid during
Roseville's past three fiscal years for services rendered in all capacities to
Richard C. Seeba, the President and Chief Executive Officer of Roseville and
Roseville 1st National Bank, the only executive officer of Roseville and/or
Roseville 1st National Bank whose annual base compensation and bonus exceeded
$100,000 during Roseville's 1997 fiscal year.


   
                                       233
    

<PAGE>   243

                           SUMMARY COMPENSATION TABLE

<TABLE>
<CAPTION>
                                                                                          Long Term Compensation
                                                                                    ---------------------------------
                                  Annual Compensation                                        Awards           Payouts
- ---------------------------------------------------------------------------------   -----------------------   -------
           (a)                      (b)          (c)          (d)          (e)          (f)          (g)        (h)           (i)
- ----------------------------      -------      -------      -------     ---------   -----------    --------   -------      ---------
                                                                         Other
                                                                         Annual     Restricted                             All Other
        Name and                                                         Compen-       Stock                   LTIP         Compen-
        Principal                              Salary        Bonus      sation(1)     Award(s)     Options/   Payouts      sation(3)
        Position                    Year         ($)          ($)          ($)          ($)        SARs(2)      ($)          ($)
- ----------------------------      -------      -------      -------     ---------   -----------    --------   -------      ---------
<S>                               <C>          <C>          <C>         <C>         <C>            <C>        <C>          <C>
Richard C. Seeba                   1997       $105,000      $     0     $ 11,575         0             0          0          $3,735
President and Chief                1996       $ 92,000      $22,000     $  5,005         0             0          0          $3,347
Executive Officer                  1995       $ 92,000      $     0     $  9,355         0             0          0          $2,916
</TABLE>

- ----------------
(1)     Includes automobile allowance and family health insurance paid by
        Roseville 1st National Bank.

(2)     Includes life insurance premiums paid by Roseville 1st National Bank and
        Roseville 1st National Bank's match on the Roseville 1st National Bank
        401(k) contribution.


                  OPTION/SAR EXERCISES AND YEAR END VALUE TABLE
        AGGREGATED OPTION/SAR EXERCISES IN LAST FISCAL YEAR AND YEAR END
                                OPTION/SAR VALUE

<TABLE>
<CAPTION>
       (a)                       (b)               (c)                    (d)                           (e)
- ------------------         --------------    ----------------       -----------------            -----------------
                                                                                                     Value of
                                                                       Number of                   Unexercised 
                                                                      Unexercised                  In-the-Money
                                                                     Options/SARs at              Options/SARs at
                               Shares                                  Year End (#)                Year End ($)
                             Acquired on      Value Realized           Exercisable/                Exercisable/
     Name                    Exercise (#)          ($)               Unexercisable(1)             Unexercisable(1)
- ------------------         --------------    ----------------       -----------------            -----------------
<S>                        <C>               <C>                    <C>                          <C>
Richard C. Seeba                 0                 N/A                 17,633/1,200                 $8,816/$600
</TABLE>


                                      234
<PAGE>   244

Mr. Seeba has a salary continuation agreement which provides that Roseville 1st
National Bank will pay him $65,000 per year for 15 years ("Normal Retirement
Benefit") following his retirement at age 66 or later ("Retirement Age"). In the
event of disability while Mr. Seeba is actively employed prior to Retirement
Age, he will receive a benefit amount that is determined by calculating a fixed
annuity, payable in 15 annual installments, crediting interest on the unpaid
balance of the accrual balance at an annual rate of 8.55, compounded monthly. If
Mr. Seeba dies while actively employed by Roseville 1st National Bank prior to
Retirement Age, his beneficiary will receive from Roseville 1st National Bank
the Normal Retirement Benefit in 180 equal installments, commencing with the
month following the date of death. In the event of early termination, Mr. Seeba
will receive a benefit that is a percentage of the $ 65,000 per year amount for
15 years based on the vesting schedule, provided however, that Mr. Seeba is not
entitled to any benefit if he voluntarily terminates his employment prior to the
end of the second plan year. Benefits are paid in 180 equal installments payable
the first day of each month, commencing with the month following attaining age
66. In the event of a change of control (other than the proposed Western
Sierra/Roseville merger), Mr. Seeba will receive the Normal Retirement Benefit
payable in 180 equal installments payable the first of each month, commencing
the month following the change of control.

CERTAIN TRANSACTIONS

Some of the directors and executive officers of Roseville and their immediate
families, as well as the companies with which they are associated, are customers
of, or have had banking transactions with, Roseville in the ordinary course of
Roseville's business, and Roseville expects to have banking transactions with
such persons in the future. In management's opinion, all loans and commitments
to lend in such transactions were made in compliance with applicable laws and on
substantially the same terms, including interest rates and collateral, as those
prevailing for comparable transactions with other persons of similar
creditworthiness and in the opinion of management did not involve more than a
normal risk of collectibility or present other unfavorable features.


                                      235
<PAGE>   245

   
                             Information Concerning
                  Western Sierra, Lake Community and Roseville
    

COMPETITION

The banking business in California generally, and in the market areas served by
Western Sierra, Lake Community and Roseville specifically, is highly competitive
with respect to both loans and deposits. Western Sierra, Lake Community and
Roseville all compete for loans and deposits with other commercial banks,
savings and loan associations, finance companies, money market funds, credit
unions and other financial institutions, including a number that are much larger
than any of Western Sierra, Lake Community or Roseville. As of June 30, 1997
there were 41 banking offices, including 9 offices of three major chain banks,
operating within Western Sierra's primary market areas in El Dorado and Placer
Counties, there were 10 banking offices, including one office of a major chain
bank operating within Lake Community's primary market area in Lake County and
there were 66 banking offices, including 23 offices of three major chain banks,
operating within Roseville's primary market area in Placer County. There has
been increased competition for deposit and loan business over the last several
years as a result of deregulation.

Additionally, with the recent enactment of interstate banking legislation in
California, bank holding companies headquartered outside of California may enter
the California market and provide further competition for Western Sierra, Lake
Community and Roseville. See "Effect of Governmental Policies and Recent
Legislation" below. Many of the major commercial banks operating in Western
Sierra's, Lake Community's and Roseville's market areas offer certain services,
such as trust and international banking services, which Western Sierra, Lake
Community and Roseville do not offer directly. Additionally, banks with larger
capitalization have larger lending limits and are thereby able to serve larger
customers.

EFFECT OF GOVERNMENTAL POLICIES AND RECENT LEGISLATION

Banking is a business which depends on rate differentials. In general, the
difference between the interest rate paid by Western Sierra, Lake Community and
Roseville on their deposits and their other borrowings and the interest rate
received by Western Sierra, Lake Community and Roseville on loans extended to
its customers and securities held in Western Sierra's, Lake Community's and
Roseville's portfolio comprise the major portion of Western Sierra's, Lake
Community's and Roseville's earnings. These rates are highly sensitive to many
factors which are beyond the control of Western Sierra, Lake Community and
Roseville. Accordingly, the earnings and growth of Western Sierra, Lake
Community and Roseville are subject to the influence of domestic and foreign
economic conditions, including inflation, recession and unemployment.

The earnings and growth of Western Sierra, Lake Community and Roseville are also
influenced by the monetary and fiscal policies of the federal government and the
policies of regulatory agencies, particularly the FRB. The FRB implements
national monetary policies (with objectives such as to curb inflation and combat
recession) by its open-market operations in United States Government securities,
by adjusting the required level of reserves for financial institutions subject
to its reserve requirements and by varying the discount rates applicable to
borrowing by depository institutions. The actions of the FRB in these areas
influence the growth of bank loans, investments and deposits and also affect
interest rates charged on loans and paid 


                                      236
<PAGE>   246
on deposits. The nature and impact of any future change in monetary policies 
cannot be predicted.

From time to time, legislation is enacted which has the effect of increasing the
cost of doing business, limiting or expanding permissible activities or
affecting the competitive balance between banks and other financial
institutions. Proposals to change the laws and regulations governing the
operations and taxation of banks and other financial institutions are frequently
made in Congress, in the California legislature and before various bank
regulatory agencies. The likelihood of any major change and the impact such
change may have on Western Sierra, Lake Community and Roseville is impossible to
predict. Certain of the potentially significant changes which have been enacted
recently and others which are currently under consideration by Congress or
various regulatory or professional agencies are discussed below.

CURRENT ACCOUNTING DEVELOPMENTS

In February 1997, the Financial Accounting Standards Board (the "FASB") issued
Statement No. 128, Earnings Per Share, which establishes standards for computing
and presenting earnings per share. Statement No. 128 redefines earnings per
share under generally accepted accounting principles. Under Statement No. 128,
primary earnings per share is replaced by basic earnings per share and fully
diluted earnings per share is replaced by diluted earnings per share. Statement
No. 128 was effective for Western Sierra, Lake Community and Roseville for their
fiscal years beginning with 1997.

In the first six months of 1997, the FASB also issued Statement No. 129,
Disclosure of Information about Capital Structure; Statement No. 130, Reporting
Comprehensive Income; and Statement No. 131, Reporting Disaggregated Information
about a Business Enterprise. Statement No. 129 was effective for Western Sierra,
Lake Community and Roseville for their fiscal years ended December 31, 1997 but
had no material effect on their financial statements. Statements No. 130 and No.
131 are effective for Western Sierra, Lake Community and Roseville for their
fiscal years beginning with 1998. In addition, the FASB issued Statement No.
133, Accounting for Derivative Instruments and Hedging Activities. This
Statement is effective for fiscal years beginning after June 15, 1999 but may be
adopted as of the beginning of any fiscal quarter that begins after the issuance
of the Statement. Management of each of Western Sierra, Lake Community and
Roseville has not yet completed its analysis to determine the effect
implementation of Statements Nos. 130, 131 and 133 will have on Western
Sierra's, Lake Community's and Roseville's financial statements.

The FASB issued Statement No. 125, Accounting for Transfers and Servicing of
Financial Assets and Extinguishment of Liabilities, and Statement No. 127,
Deferral of the Effective Date of Certain Provisions of FASB Statement No. 125
(An Amendment of FASB Statement No. 125), which are applicable for transactions
occurring after December 31, 1996 and certain transactions after December 31,
1997. These Statements do not permit earlier or retroactive application. These
Statements distinguish transfers of financial assets that are sales from
transfers that are secured borrowings. A transfer of financial assets in which
the transferor surrenders control over those assets is accounted for as a sale
to the extent that consideration other than beneficial interests in the
transferred assets is received in exchange. These Statements also establish
standards on the initial recognition and measurement of servicing assets and
other retained interests and servicing liabilities, and their subsequent
measurement.


                                      237
<PAGE>   247
These Statements require that debtors reclassify financial assets pledged as
collateral and that secured parties recognize those assets and their obligation
to return them in certain circumstances in which the secured party has taken
control of those assets. In addition, these Statements require that a liability
be derecognized only if the debtor is relieved of its obligation through payment
to the creditor or by being legally released from being the primary obligor
under the liability either judicially or by the creditor. Management of each of
Western Sierra, Lake Community and Roseville does not believe the application of
these Statements to transactions of Western Sierra, Lake Community and Roseville
that have been typical in the past will materially affect Western Sierra's, Lake
Community's and Roseville's financial position and results of operations.

RECENT LEGISLATION AND OTHER CHANGES

From time to time, legislation is enacted which has the effect of increasing the
cost of doing business, limiting or expanding permissible activities or
affecting the competitive balance between banks and other financial
institutions. Proposals to change the laws and regulations governing the
operations and taxation of banks and other financial institutions are frequently
made in Congress, in the California legislature and before various bank
regulatory agencies. The likelihood of any major changes and the impact such
changes might have on Western Sierra, Lake Community and Roseville are
impossible to predict. Certain of the potentially significant changes which have
been enacted recently by Congress and others which are currently under
consideration by Congress or various regulatory or professional agencies are
discussed below.

On October 1, 1998, the FDIC adopted two new rules governing minimum capital
levels that FDIC-supervised banks must maintain against the risks to which they
are exposed. The first rule makes risk-based capital standards consistent for
two types of credit enhancements (i.e., recourse arrangements and direct credit
substitutes) and requires different amounts of capital for different risk
positions in asset securitization transactions. The second rule permits limited
amounts of unrealized gains on equity securities to be recognized for risk-based
capital purposes. These rules may be applied by Western Sierra, Lake Community
and Roseville on September 1, 1998.

In August 1997, Governor Wilson of California signed Assembly Bill 1432
("AB1432") which provides for certain changes in the banking laws of California.
Effective January 1, 1998 AB1432 eliminates the provisions regarding impairment
of contributed capital and the assessment of shares when there is an impairment
of capital. AB1432 now allows the DFI to close a bank, if the DFI finds that the
bank's tangible shareholders' equity is less than the greater of 3% of the
bank's total assets or $1 million. AB1432 also moved administration of the Local
Agency Program from the California Department of Financial Institutions to the
California State Treasurer's office.

The Economic Growth and Regulatory Paperwork Reduction Act (the "1996 Act") as
part of the Omnibus Appropriations Bill was enacted on September 30, 1996 and
includes many banking related provisions. The most important banking provision
is the recapitalization of the Savings Association Insurance Fund ("SAIF"). The
1996 Act provides for a one time assessment, payable on November 30, 1996, of
approximately 65 basis points per $100 of deposits of SAIF insured deposits
including SAIF insured deposits which were assumed by banks in acquisitions of
savings associations. For the years 1997 through 1999 the banking industry will
assist in the payment of interest on Financing Corporation ("FICO") bonds that
were issued to help pay for the clean up of the savings and loan industry. Banks
will pay approximately 1.3 cents per $100 


                                      238
<PAGE>   248
of deposits for this special assessment, and after the Year 2000, banks
will pay approximately 2.4 cents per $100 of deposits until the FICO bonds
mature in 2017. There is a three year moratorium on conversions of SAIF deposits
to Bank Insurance Fund ("BIF") deposits. The 1996 Act also has certain
regulatory relief provisions for the banking industry. Lender liability under
the Superfund is eliminated for lenders who foreclose on property that is
contaminated provided that the lenders were not involved with the management of
the entity that contributed to the contamination. There is a five year sunset
provision for the elimination of civil liability under the Truth in Savings Act.
The FRB and Department of Housing and Urban Development are to develop a single
format for Real Estate Settlement Procedures Act and Truth in Lending Act
("TILA") disclosures. TILA disclosures for adjustable mortgage loans are to be
simplified. Significant revisions are made to the Fair Credit Reporting Act
("FCRA") including requiring that entities which provide information to credit
bureaus conduct an investigation if a consumer claims the information to be in
error. Regulatory agencies may not examine for FCRA compliance unless there is a
consumer complaint investigation that reveals a violation or where the agency
otherwise finds a violation. In the area of the Equal Credit Opportunity Act,
banks that self-test for compliance with fair lending laws will be protected
from the results of the test provided that appropriate corrective action is
taken when violations are found.

During 1996, new federal legislation amended the Comprehensive Environmental
Response, Compensation, and Liability Act ("CERCLA") and the underground storage
tank provisions of the Resource Conversation and Recovery Act to provide lenders
and fiduciaries with greater protections from environmental liability. In June
1997, the U.S. Environmental Protection Agency ("EPA") issued its official
policy with regard to the liability of lenders under CERCLA as a result of the
enactment of the Asset Conservation, Lender Liability and Deposit Insurance
Protection Act of 1996. California law provides that, subject to numerous
exceptions, a lender acting in the capacity of a lender shall not be liable
under any state or local statute, regulation or ordinance, other than the
California Hazardous Waste Control Law, to undertake a cleanup, pay damages,
penalties or fines, or forfeit property as a result of the release of hazardous
materials at or from the property.

   
In 1997, California adopted the Environmental Responsibility Acceptance Act (the
"Act") (Cal. Civil Code Sections 850-855) to facilitate the notification of
government agencies and potentially responsible parties (for example, for
cleanup) of the existence of contamination and the cleanup or other remediation
of contamination by the potentially responsible parties. The Act requires, among
other things, that owners of sites who have actual awareness of a release of a
hazardous material that exceeds a specified notification threshold to take all
reasonable steps to identify the potentially responsible parties and to send a
notice of potential liability to the parties and the appropriate oversight
agency.
    

On September 28, 1995, Assembly Bill 1482 (known as the Caldera, Weggeland, and
Killea California Interstate Banking and Branching Act of 1995 and referred to
herein as "CIBBA") was enacted which allows for early interstate branching in
California. Under the federally enacted Riegle-Neal Interstate Banking and
Branching Efficiency Act of 1994 ("IBBEA"), discussed in more detail below,
individual states could "opt-out" of the federal law that would allow banks on
an interstate basis to engage in interstate branching by merging out-of-state
banks with host state banks after June 1, 1997. In addition under IBBEA,
individual states could also "opt-in" and allow out-of-state banks to merge with
host state banks prior to June 1, 1997. The host state is allowed under IBBEA to
impose certain nondiscriminatory conditions on the resulting depository


                                      239
<PAGE>   249
institution until June 1, 1997. California, in enacting CIBBA, authorizes
out-of-state banks to enter California by the acquisition of or merger with a
California bank that has been in existence for at least five years.

Section 3824 of the California Financial Code ("Section 3824") as added by CIBBA
provides for the election of California to "opt-in" under IBBEA allowing
interstate bank merger transactions prior to July 1, 1997 of an out-of-state
bank with a California bank that has been in existence for at least five years.
The early "opt in" has the reciprocal effect of allowing California banks to
merge with out-of-state banks where the states of such out-of-state banks have
also "opted in" under IBBEA. The five year age limitation is not required when
the California bank is in danger of failing or in certain other emergency
situations.

Under IBBEA, California may also allow interstate branching through the
acquisition of a branch in California without the acquisition of an entire
California bank. Section 3824 provides an express prohibition against interstate
branching through the acquisition of a branch in California without the
acquisition of the entire California bank. IBBEA also has a provision allowing
states to "opt-in" with respect to permitting interstate branching through the
establishment of de novo or new branches by out-of-state banks. Section 3824
provides that California expressly prohibits interstate branching through the
establishment of de novo branches of out-of-state banks in California, or in
other words, California did not "opt-in" this aspect of IBBEA. CIBBA also amends
the California Financial Code to include agency provisions to allow California
banks to establish affiliated insured depository institution agencies
out-of-state as allowed under IBBEA.

Other provisions of CIBBA amend the intrastate branching laws, govern the use of
shared ATM's, and amend intrastate branch acquisition and bank merger laws.
Another banking bill enacted in California in 1995 was Senate Bill 855 (known as
the State Bank Parity Act and is referred to herein as the "SBPA"). SBPA went
into effect on January 1, 1996, and its purpose is to allow a California state
bank to be on a level playing field with a national bank by the elimination of
certain disparities and allowing the DFI authority to implement certain changes
in California banking law which are parallel to changes in national banking law
such as closer conformance of California's version of Regulation O to the FRB's
version of Regulation O and certain other changes including allowing the
repurchase of stock with the prior written consent of the DFI.

On September 29, 1994, IBBEA was enacted which has eliminated many of the
current restrictions to interstate banking and branching. IBBEA permits full
nationwide interstate banking to adequately capitalized and adequately managed
bank holding companies beginning September 29, 1995 without regard to whether
such transaction is expressly prohibited under the laws of any state. IBBEA's
branching provisions permit full nationwide interstate bank merger transactions
to adequately capitalized and adequately managed banks beginning June 1, 1997.
However, states retain the right to completely opt out of interstate bank
mergers and to continue to require that out-of-state banks comply with the
states' rules governing entry.

   
The states that opt out must enact a law after September 29, 1994 and before
June 1, 1997 that applies equally to all out-of-state banks and expressly
prohibits merger transactions with out-of-state banks. States which opt out of
allowing interstate bank merger transactions will preclude the mergers of banks
in the opting out state with banks located in other states. In addition, banks
    


                                      240
<PAGE>   250

   
located in states that opt out are not permitted to have interstate branches.
States can also "opt in" which means states can permit interstate branching
earlier than June 1, 1997.
    

The laws governing interstate banking and interstate bank mergers provide that
transactions, which result in the bank holding company or bank controlling or
holding in excess of ten percent of the total deposits nationwide or thirty
percent of the total deposits statewide, will not be permitted except under
certain specified conditions. However, any state may waive the thirty percent
provision for such state. In addition, a state may impose a cap of less than
thirty percent of the total amount of deposits held by a bank holding company or
bank provided such cap is not discriminatory to out-of-state bank holding
companies or banks.

On September 23, 1994, the Riegle Community Development and Regulatory
Improvement Act of 1994 (the "1994 Act") was enacted which covers a wide range
of topics including small business and commercial real estate loan
securitization, money laundering, flood insurance, consumer home equity loan
disclosure and protection as well as the funding of community development
projects and regulatory relief.

The major items of regulatory relief contained in the 1994 Act include an
examination schedule that has been eased for the top rated banks and will be
every 18 months for CAMEL 1 banks with less than $250 million in total assets
and CAMEL 2 banks with less than $100 million in total assets (the $100 million
amount was amended to $250 million by the 1996 Act discussed above). The 1994
Act amends Federal Deposit Insurance Corporation Improvement Act of 1991 with
respect to the Section 124, the mandate to the federal banking agencies to issue
safety and soundness regulations, including regulations concerning executive
compensation allowing the federal banking regulatory agencies to issue
guidelines instead of regulations.

Further regulatory relief is provided in the 1994 Act, as each of the federal
regulatory banking agencies, including the National Credit Union Administration
Board, is required to establish an internal regulatory appeals process for
insured depository institutions within 6 months. In addition, the Department of
Justice 30 day waiting period for mergers and acquisitions is reduced by the
1994 Act to 15 days for certain acquisitions and mergers.

In the area of currency transaction reports, the 1994 Act requires the Secretary
of the Treasury to allow financial institutions to file such reports
electronically. The 1994 Act also requires the Secretary of the Treasury to
publish written rulings concerning the Bank Secrecy Act, and staff commentary on
Bank Secrecy Act regulations must also be published on an annual basis.

The procedures for forming a bank holding company have also been simplified. The
formal application process for many holding company formations is now a
simplified 30 day notice procedure. In addition, the Securities Act of 1933 has
been amended by the 1994 Act to further simplify the securities issuance in
connection with a bank holding company formation.

PENDING LEGISLATION AND REGULATIONS

There are pending legislative proposals to reform the Glass-Steagall Act to
allow affiliations between banks and other firms engaged in "financial
activities," including insurance companies and securities firms. Certain other
pending legislative proposals include bills to let banks pay interest on
business checking accounts, to cap consumer liability for stolen debit cards,
and to 


                                      241
<PAGE>   251
give judges the authority to force high-income borrowers to repay their debts
rather than cancel them through bankruptcy.

It is impossible to predict what effect the enactment of certain of the
above-mentioned legislation will have on Western Sierra, Lake Community and
Roseville and on the financial institutions industry in general. Moreover, it is
likely that other bills affecting the business of banks may be introduced in the
future by the United States Congress or California legislature.


                                      242
<PAGE>   252

   
                   Description of Western Sierra Following the
                      Western Sierra/Lake Community Merger
                     and the Western Sierra/Roseville Merger
    

BUSINESS

It is anticipated that following the Western Sierra/Lake Community merger and
the Western Sierra/Roseville merger, Western Sierra will continue to operate the
businesses of Western Sierra National Bank, Lake Community and Roseville 1st
National Bank in substantially the same form as such businesses were conducted
prior to the Western Sierra/Lake Community merger and the Western
Sierra/Roseville merger. The principal office of Western Sierra will move to
3350 Country Club Drive, Cameron Park, California before year end. Western
Sierra will continue to operate Western Sierra National Bank through Western
Sierra National Bank's head office and branch offices, Lake Community through
Lake Community's head office and branch offices and Roseville 1st National Bank
through Roseville 1st National Bank's head office and branch office as three
independently operated subsidiary banks.

MANAGEMENT

   
Upon completion of the Western Sierra/Lake Community merger, the Board of
Directors of Western Sierra will consist of 13 directors. All of the 10
directors of Western Sierra then in office immediately prior to the completion
of the Western Sierra/Lake Community merger shall continue to serve as directors
of Western Sierra as the Surviving Corporation, and in addition, John Helms,
Gary E. Nordine and Howard ("Bud") Van Lente, currently directors of Lake
Community, will be added to the Board of Directors of Western Sierra. For
information concerning these persons, see "Description of Western
Sierra--Management--Information on Directors and Executive Officers" and
"Description of Lake Community--Management--Information on Directors and
Executive Officers".
    

   
Upon completion of the Western Sierra/Roseville merger, the Board of Directors
of Western Sierra will consist of 14 directors. All of the 10 directors of
Western Sierra then in office immediately prior to the completion of the Western
Sierra/Roseville merger shall continue to serve as directors of Western Sierra
as the Surviving Corporation, and in addition, Kirk Doyle, Howard ("Skip") Jahn,
Thomas Manz and Richard C. Seeba, currently directors of Roseville, will be
added to the Board of Directors of Western Sierra. For information concerning
these persons, see "Description of Western Sierra--Management--Information on
Directors and Executive Officers" and "Description of Roseville--Management--
Information on Directors and Executive Officers."
    

   
If both the Western Sierra/Lake Community merger and the Western
Sierra/Roseville merger are completed, the Board of Directors of Western
Sierra will consist of 17 directors, 10 directors of Western Sierra, three
directors of Lake Community and four directors of Roseville as described above.
    

   
It is anticipated that the directors of Western Sierra will receive fees in
amounts which are substantially similar to those presently paid to directors of
Western Sierra. (See "Description of Western Sierra--Management--Compensation
of Directors and Executive Officers.")
    


                                      243
<PAGE>   253
   
Gary D. Gall, who is currently the President and Chief Executive Officer of
Western Sierra, and Lesa Fynes, who is currently the Controller of Western
Sierra, are expected to serve in the same positions with Western Sierra
following the Western Sierra/Lake Community merger and the Western
Sierra/Roseville merger. In addition, Stephanie M. Marsh, who is currently the
Senior Vice President and Chief Administrative Officer of Western Sierra
National Bank, and Kirk Dowdell, who is currently the Senior Vice President and
Chief Credit Officer of Western Sierra National Bank, are expected to serve in
those positions with both Western Sierra and Western Sierra National Bank
following the Western Sierra/Lake Community merger and the Western
Sierra/Roseville merger. In addition, Richard C. Seeba, who is currently serving
as the President and Chief Executive Officer of Roseville and Roseville 1st
National Bank will continue to serve in those capacities with Roseville 1st
National Bank and will serve as an Executive Vice President of Western Sierra,
and Thomas C. Warren, who is currently serving as the Senior Vice President and
Chief Financial Officer of Roseville and Roseville 1st National Bank will serve
as the Senior Vice President and Chief Financial Officer of both Western Sierra
and Roseville 1st National Bank following the Western Sierra/Roseville merger.
Gary D. Gall will serve as President and Chief Executive Officer of Western
Sierra National Bank, Douglas A. Nordell will serve as the President and Chief
Executive Officer of Lake Community, and Richard C. Seeba will serve as the
President and Chief Executive Officer of Roseville 1st National Bank. In
addition, the Board of Directors of Western Sierra will appoint from time to
time such other officers of Western Sierra and the subsidiary banks as may be
necessary. For further information concerning Gary D. Gall, Lesa Fynes,
Stephanie M. Marsh, Kirk Dowdell, Richard Seeba, Thomas C. Warren, Douglas A.
Nordell and other principal officers of Western Sierra, Lake Community and
Roseville, see "Description of Western Sierra--Management--Information on
Directors and Executive Officers," "Description of Lake Community--Management--
Information on Directors and Executive Officers" and "Description of Roseville--
Management--Information on Directors and Executive Officers."

It is anticipated that Gary D. Gall, Douglas A. Nordell and Richard C. Seeba and
the other principal officers of Western Sierra, Western Sierra National Bank,
Lake Community and Roseville 1st National Bank will receive compensation
substantially similar to that currently being received by them. For information
concerning compensation currently being paid to principal officers of Western
Sierra, Lake Community and Roseville, see "Description of Western
Sierra--Management--Compensation of Directors and Executive Officers"
"Description of Lake Community--Management--Compensation of Directors and
Executive Officers" and "Description of Roseville--Management--Compensation
Directors and of Executive Officers," "Description of the Western Sierra/Lake
Community Merger--Interests of Certain Persons in the Western Sierra/Lake
Community Merger and Material Contracts with Lake Community and its Affiliates"
and "Description of the Western Sierra/Roseville Merger--Interests of Certain
Persons in the Western Sierra/Roseville Merger and Material Contracts with
Roseville and its Affiliates" above.
    

LIMITATION OF LIABILITY AND INDEMNIFICATION

The Articles of Incorporation and Bylaws of Western Sierra provide for
indemnification of agents including directors, officers and employees to the
maximum extent allowed by California law including the use of an indemnity
agreements. Western Sierra Articles further provide for the elimination of
director liability for monetary damages to the maximum extent allowed by
California law. The indemnification law of the State of California generally
allows


                                      244
<PAGE>   254
indemnification in matters not involving the right of the corporation, to an
agent of the corporation if such person acted in good faith and in a manner such
person reasonably believed to be in the best interests of the corporation, and
in the case of a criminal matter, had no reasonable cause to believe the conduct
of such person was unlawful. California law, with respect to matters involving
the right of a corporation, allows indemnification of an agent of the
corporation, if such person acted in good faith, in a manner such person
believed to be in the best interests of the corporation and its shareholders;
provided that there shall be no indemnification for:

- -       amounts paid in settling or otherwise disposing of a pending action
        without court approval; 

- -       expenses incurred in defending a pending action which is settled or
        otherwise disposed of without court approval; 

- -       matters in which such person shall have been adjudged to be liable to
        the corporation unless and only to the extent that the court in which
        the proceeding is or was pending shall determine that such person is
        entitled to be indemnified; or 

- -       other matters specified in the California General Corporation Law.

Western Sierra's Bylaws provide that Western Sierra shall to the maximum extent
permitted by law have the power to indemnify its directors, officers and
employees. Western Sierra's Bylaws also provide that Western Sierra shall have
the power to purchase and maintain insurance covering its directors, officers
and employees against any liability asserted against any of them and incurred by
any of them, whether or not Western Sierra would have the power to indemnify
them against such liability under the provisions of applicable law or the
provisions of Western Sierra's Bylaws. Each of the directors and executive
officers of Western Sierra's subsidiary bank, Western Sierra National Bank has
an indemnification agreement with Western Sierra National Bank that provides
that Western Sierra National Bank shall indemnify such person to the full extent
authorized by the applicable provisions of California law, subject to national
banking laws, and further provide advances to pay for any expenses which would
be subject to reimbursement.

Insofar as indemnification for liabilities arising under the Securities Act of
1933, as amended (the "Securities Act") may be permitted to directors, officers
or persons controlling Western Sierra pursuant to the foregoing, Western Sierra
has been informed that in the opinion of the SEC, such indemnification is
against public policy as expressed in the Securities Act and is therefore
unenforceable.

INDEPENDENT PUBLIC ACCOUNTANTS

It is anticipated that Perry-Smith & Co., LLP will continue to provide
accounting services to Western Sierra, Western Sierra National Bank, Lake
Community and Roseville 1st National Bank, such services to include audits of
year end financial statements and other services as
required.


                                      245
<PAGE>   255

   
                                     Experts
    

The financial statements of Western Sierra as of December 31, 1997 and 1996 and
for each of the three years in the period ended December 31, 1997 included in
this joint proxy statement/prospectus have been audited by Perry-Smith & Co.,
LLP, independent auditors, as stated in their report appearing herein and have
been so included in reliance upon the report of such firm given upon their
authority as experts in accounting and auditing.

   
The financial statements of Lake Community as of December 31, 1997 and 1996 and
for each of the three years in the period ended December 31, 1997 included in
this joint proxy statement/prospectus have been audited by Perry-Smith & Co.,
LLP, independent auditors, as stated in their report appearing herein and have
been so included in reliance upon the report of such firm given upon their
authority as experts in accounting and auditing.
    

The financial statements of Roseville as of December 31, 1997 and 1996 and for
each of the three years in the period ended December 31, 1997 included in this
joint proxy statement/prospectus have been audited by Perry-Smith & Co., LLP,
independent auditors, as stated in their report appearing herein and have been
so included in reliance upon the report of such firm given upon their authority
as experts in accounting and auditing.

Representatives of Perry-Smith & Co., LLP will be present at the Western Sierra
Meeting, and they will be given an opportunity to make a statement if they
desire to do so. They will also be available to respond to appropriate
questions.

Representatives of Perry-Smith & Co., LLP will be present at the Lake Community
Meeting, and they will be given an opportunity to make a statement if they
desire to do so. They will also be available to respond to appropriate
questions.

Representatives of Perry-Smith & Co., LLP will be present at the Roseville
Meeting, and they will be given an opportunity to make a statement if they
desire to do so. They will also be available to respond to appropriate
questions.


                                      246
<PAGE>   256

   
                                  Legal Matters
    

The validity of the securities to be issued by Western Sierra in connection with
each of the Western Sierra/Lake Community merger and the Western
Sierra/Roseville merger is being passed upon by Gary Steven Findley &
Associates, Anaheim, California.


   
                                 Other Business
    

The Boards of Directors of Western Sierra, Lake Community and Roseville do not
know of any other matters to be presented at the Western Sierra Meeting, the
Lake Community Meeting or the Roseville Meeting, except the proposals concerning
the Western Sierra/Lake Community merger and the Western Sierra/Roseville merger
set forth above. If other matters properly come before the Western Sierra
Meeting, the Lake Community Meeting or the Roseville Meeting, however, it is the
intention of the persons named in the accompanying Proxy cards to vote said
Proxy cards in accordance with their best judgment and in their sole discretion.


                                      247
<PAGE>   257

   
                          Index to Financial Statements
    

   
<TABLE>
<CAPTION>
                                                                                                                PAGE
                                                                                                                ----
<S>                                                                                                            <C>
Western Sierra Bancorp and Subsidiary
Unaudited Consolidated Interim Financial Statements

Consolidated Balance Sheet, September 30, 1998 and December 31, 1997.............................................F-1

Consolidated Statement of Income for the Nine Month Periods Ended September 30, 1998 and 1997....................F-2

Consolidated Statement of Stockholders' Equity for the Nine Month Period Ended
September 30, 1998 and the Year Ended December 31, 1997..........................................................F-3

Consolidated Statement of Cash Flows for the Nine Month Periods Ended September 30, 1998 and 1997................F-4

Notes to Financial Statements....................................................................................F-6

Western Sierra Bancorp and Subsidiary
Audited Consolidated Financial Statements

Independent Auditor's Report....................................................................................F-14

Consolidated Balance Sheet, December 31, 1997 and 1996..........................................................F-15

Consolidated Statement of Income for the Years Ended December 31, 1997, 1996 and 1995...........................F-16

Consolidated Statement of Stockholders' Equity
for the Years Ended December 31, 1997, 1996 and 1995............................................................F-18

Consolidated Statement of Cash Flows for the Years Ended December 31, 1997, 1996 and 1995.......................F-19

Notes to Consolidated Financial Statements......................................................................F-23

Lake Community Bank
Unaudited Interim Financial Statements

Balance Sheet, September 30, 1998 and December 31, 1997.........................................................F-52

Statement of Income for the Nine Months Ended September 30, 1998 and 1997.......................................F-53

Statement of Stockholders' Equity for the
Nine Months Ended September 30, 1998 and 1997...................................................................F-54

Statement of Cash Flows for the Nine Months Ended September 30, 1998............................................F-55
</TABLE>
    


                                      248
<PAGE>   258

   
                          Index to Financial Statements
    


   
<TABLE>
<CAPTION>
                                                                                                              PAGE
                                                                                                              ----
<S>                                                                                                           <C>

Statement of Cash Flows for the Nine Months Ended September 30, 1997..........................................F-56

Notes to Financial Statements.................................................................................F-57

Lake Community Bank
Audited Financial Statements

Independent Auditor's Report..................................................................................F-61

Balance Sheet, December 31, 1997 and 1996.....................................................................F-62

Statement of Income for the Years Ended December 31, 1997, 1996 and 1995......................................F-63

Statement of Stockholders' Equity for the Years Ended
December 31, 1997, 1996 and 1995..............................................................................F-65

Statement of Cash Flows for the Years Ended December 31, 1997, 1996 and 1995..................................F-66

Notes to Financial Statements.................................................................................F-70

Roseville 1st Community Bancorp and Subsidiary
Unaudited Consolidated Interim Financial Statements

Consolidated Balance Sheet, September 30, 1998 and December 31, 1997..........................................F-87

Consolidated Statement of Income for the Nine Months Ended September 30, 1998 and 1997........................F-88

Consolidated Statement of Stockholders' Equity for the Nine Months Ended
September 30, 1998 and the Year Ended December 31, 1997.......................................................F-90

Consolidated Statement of Cash Flows for the Nine Months Ended September 30, 1998 and 1997....................F-91

Notes to Consolidated Financial Statements....................................................................F-93
</TABLE>
    


                                      249
<PAGE>   259

   
                          Index to Financial Statements
    

   
<TABLE>
<CAPTION>
                                                                                                                 PAGE
                                                                                                                 ----
<S>                                                                                                             <C>
Roseville 1st National Bank
Audited Financial Statements

Independent Auditor's Report......................................................................................F-98

Balance Sheet, December 31, 1997 and 1996.........................................................................F-99

Statement of Income for the Years Ended December 31, 1997, 1996 and 1995.........................................F-100

Statement of Stockholders' Equity for the Years
Ended December 31, 1997, 1996 and 1995...........................................................................F-101

Statement of Cash Flows for the Years Ended December 31, 1997, 1996 and 1995.....................................F-102

Notes to Financial Statements....................................................................................F-104
</TABLE>
    


                                      250
<PAGE>   260


                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                           CONSOLIDATED BALANCE SHEET
                                   (UNAUDITED)


<TABLE>
<CAPTION>

                                                            SEPTEMBER 30,    DECEMBER 31,
                                                                1998             1997
                                                            -------------   -------------
                       ASSETS
<S>                                                        <C>             <C>
Cash and due from banks                                     $  6,941,034    $  5,296,020
Federal funds sold                                            10,600,000       6,550,000
Loans held for sale                                            2,785,765       1,766,851
Investment securities (market value of $33,483,300
   in 1998 and $20,790,500 in 1997) (Note 2)                  33,433,044      20,748,546
Loans and leases, less allowance for loan and
   lease losses of $1,024,738 in 1998 and $947,865
   in 1997 (Note 3)                                           73,819,437      68,190,971
Other real estate, net (Note 4)                                1,553,336         966,804
Bank premises and equipment, net (Note 5)                      3,480,912       3,027,078
Accrued interest receivable and other assets (Note 6)          2,667,767       2,313,511
                                                            ------------    ------------
                                                            $135,281,295    $108,859,781
                                                            ============    ============

                   LIABILITIES AND
                STOCKHOLDERS' EQUITY

Deposits:
   Non-interest bearing                                     $ 31,552,381    $  19,214,744
   Interest bearing (Note 7)                                  92,177,085       79,494,454
                                                            ------------    -------------

           Total deposits                                    123,729,466       98,709,198

Accrued interest payable and other liabilities                 1,158,452        1,152,111
                                                            ------------    -------------

           Total liabilities                                 124,887,918       99,861,309

Stockholders' equity:
   Preferred stock - no par value; 10,000,000
      shares authorized; none issued                                  --               --
   Common stock - no par value; 10,000,000 shares
      authorized; issued and outstanding - 981,448
      shares in 1998 and 946,021 shares in 1997                7,381,303        7,000,846
   Retained earnings                                           2,743,717        1,908,449
   Accumulated other comprehensive income
      (Notes 2 and 9)                                            268,357           89,177
                                                            ------------    -------------
           Total stockholders' equity                         10,393,377        8,998,472
                                                            ------------    -------------
                                                            $135,281,295    $ 108,859,781
                                                            ============    =============
</TABLE>


   The accompanying notes are an integral part of these financial statements.




                                      F-1


<PAGE>   261
                            WESTERN SIERRA BANCORP AND SUBSIDIARY

                               CONSOLIDATED STATEMENT OF INCOME
                                         (UNAUDITED)

                     NINE MONTH PERIODS ENDED SEPTEMBER 30, 1998 AND 1997

<TABLE>
<CAPTION>
                                                                1998          1997
                                                             ----------    ----------
<S>                                                         <C>           <C>
Interest income:
   Interest and fees on loans and leases                     $5,550,326    $5,106,293
   Interest on investment securities:
      Taxable                                                   968,111       869,775
      Exempt from Federal income taxes                          165,503        42,164
   Interest on Federal funds sold                               320,201       150,153
                                                             ----------    ----------
         Total interest income                                7,004,141     6,168,385

Interest expense on deposits (Note 7)                         2,601,564     2,217,426
                                                             ----------    ----------
         Net interest income                                  4,402,577     3,950,959

Provision for loan and lease losses (Note 3)                    250,000       193,000
                                                             ----------    ----------
         Net interest income after provision
           for loan and lease losses                          4,152,577     3,757,959
                                                             ----------    ----------
Non-interest income:
   Service charges and fees                                     534,111       557,191
   Gain on sale of loans                                      1,093,463       561,737
   Gain on sale of investment securities, net (Note 2)                         16,292
   Other                                                        214,532       208,214
                                                             ----------    ----------
         Total non-interest income                            1,842,106     1,343,434
                                                             ----------    ----------
Other expenses:
   Salaries and employee benefits (Note 3)                    2,621,234     2,094,069
   Occupancy                                                    323,744       295,763
   Equipment                                                    420,245       337,457
   Other                                                      1,322,614     1,213,343
                                                             ----------    ----------
         Total other expenses                                 4,687,837     3,940,632
                                                             ----------    ----------

         Income before income taxes                           1,306,846     1,160,761

Income taxes                                                    471,578       453,043
                                                             ----------    ----------

         Net income                                          $  835,268    $  707,718
                                                             ==========    ==========

Basic earnings per share (Note 8)                            $      .86    $      .73
                                                             ==========    ==========

Diluted earnings per share (Note 8)                          $      .80    $      .70
                                                             ==========    ==========

</TABLE>


   The accompanying notes are an integral part of these financial statements.



                                      F-2


<PAGE>   262
                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                 CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY

 NINE MONTH PERIOD ENDED SEPTEMBER 30, 1998 AND THE YEAR ENDED DECEMBER 31, 1997


<TABLE>
<CAPTION>

                                                                                    ACCUMU-
                                                                                  LATED OTHER
                                             COMMON STOCK                           COMPRE-
                                         ----------------------     RETAINED        HENSIVE
                                         SHARES        AMOUNT       EARNINGS        INCOME         TOTAL
                                         -------     ----------   -----------     ---------     ----------
<S>                                     <C>       <C>            <C>            <C>            <C>
Balance, January 1, 1997                 796,948     $4,989,275   $ 2,762,300     $ (31,249)    $7,720,326

Stock options exercised and related
  tax benefit                             11,943        118,827                                    118,827

6% stock dividend                         47,927        617,300      (617,300)

10% stock dividend                        85,203      1,235,444    (1,235,444)

Fractional shares                                                      (4,177)                      (4,177)

Earned ESOP shares                         4,000         40,000                                     40,000

Net income                                                          1,003,070                    1,003,070

Net change in unrealized loss on
  available-for-sale investment
  securities, net of taxes                                                         120,426         120,426
                                         -------     ----------   -----------     --------      ----------
Balance, December 31, 1997               946,021      7,000,846     1,908,449       89,177       8,998,472

Stock options exercised
  and related tax benefit                 35,427        380,457                                    380,457

Net income                                                            835,268                      835,268

Net change in unrealized gain on
  available-for-sale investment sec-
  urities, net of taxes (Notes 2 and 9)                                            179,180         179,180
                                         -------     ----------   -----------     --------     -----------
Balance, September 30, 1998              981,448     $7,381,303   $ 2,743,717     $268,357     $10,393,377
                                         =======     ==========   ===========     ========     ===========

</TABLE>


                   The accompanying notes are an integral part
                         of these financial statements.

                                      F-3


<PAGE>   263
                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                      CONSOLIDATED STATEMENT OF CASH FLOWS
                                   (UNAUDITED)

          FOR THE NINE MONTH PERIODS ENDED SEPTEMBER 30, 1998 AND 1997

<TABLE>
<CAPTION>

                                                                  1998          1997
                                                             ------------  -------------
<S>                                                          <C>           <C>
Cash flows from operating activities:
   Net income                                                $    835,268  $    707,718
   Adjustments to reconcile net income to cash
      provided by operating activities:
         Provision for loan and lease losses                      250,000       193,000
         Depreciation and amortization                            329,770       288,402
         Deferred loan origination costs and fees, net           (161,976)       19,643
         Amortization of investment security premiums, net         57,047        11,935
         Loss on sale of available-for-sale investment
           securities                                                           (16,292)
         Provision for losses on other real estate                 75,000       274,972
         (Gain) loss on sale of other real estate                 (19,139)          181
         (Increase) decrease in loans held for sale            (1,018,914)      165,117
         Increase in accrued interest receivable and
           other assets                                          (278,798)     (255,030)
         Increase in accrued interest payable and
           other liabilities                                        6,341        42,048
                                                             ------------  ------------
              Net cash provided by operating activities            74,599     1,431,694
                                                             ------------  ------------
Cash flows from investing activities:
   Cash acquired in the purchase of selected assets
      and liabilities of another bank                                         5,944,700
   Proceeds from the sale and call of available-for-sale
      investment securities                                     2,800,000     3,441,511
   Proceeds from matured available-for-sale investment
      securities                                                1,000,007
   Proceeds from called held-to-maturity investment
      securities                                                2,000,000     1,000,000
   Proceeds from matured held-to-maturity investment
      securities                                                   25,000       114,380
   Purchases of available-for-sale investment securities      (20,270,778)  (11,615,150)
   Purchases of held-to-maturity investment securities                       (1,695,678)
   Principal repayments received from available-for-sale
      SBA pools and mortgage-backed securities                  1,943,985       677,614
   Principal repayments received from held-to-maturity
      mortgage-backed securities                                   36,009       113,493
   Net increase in loans and leases                            (6,474,325)   (9,431,133)
   Purchases of premises and equipment                           (783,602)     (276,898)
   Capitalized additions to other real estate                     (81,338)      (18,232)
   Proceeds from the sale of other real estate                    196,775       200,343
                                                             ------------  ------------
              Net cash used in investing activities           (19,608,267)  (11,545,050)
                                                             ------------  ------------
</TABLE>


                                   (Continued)


                                      F-4

<PAGE>   264
                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                      CONSOLIDATED STATEMENT OF CASH FLOWS
                                   (UNAUDITED)
                                   (Continued)
          FOR THE NINE MONTH PERIODS ENDED SEPTEMBER 30, 1998 AND 1997

<TABLE>
<CAPTION>
                                                         1998           1997
                                                     ------------   -----------
<S>                                                  <C>            <C>
Cash flows from financing activities:
   Net increase in demand, interest-bearing and
      savings deposits                               $  9,923,266   $ 4,625,080
   Net increase in time deposits                       15,097,002    12,407,307
   Repayment of ESOP note payable                                       (40,000)
   Proceeds from the exercise of stock options            208,414        36,342
   Payments for fractional shares                                        (1,741)
                                                     ------------   -----------
              Net cash provided by financing
                activities                             25,228,682    17,026,988
                                                     ------------   -----------

              Increase in cash and cash equivalents     5,695,014     6,913,632

Cash and cash equivalents at beginning of period       11,846,020     4,547,407
                                                     ------------   -----------
Cash and cash equivalents at end of period           $ 17,541,034   $11,461,039
                                                     ============   ===========

Supplemental disclosure of cash flow information:

   Cash paid during the year for:
      Interest expense                               $  2,747,262   $ 2,117,980
      Income taxes                                   $    445,000   $   544,000

Non-cash investing activities:
   Real estate acquired through foreclosure          $    757,830   $   709,846

   Net change in unrealized gain on available-
      for-sale investment securities                 $    275,287   $   148,777

Supplemental schedule related to acquisition:

   On February 21, 1997, the Bank acquired
      certain assets and liabilities of the
      Lincoln branch of Wells Fargo Bank:

         Cash                                                       $ 5,944,700
         Fair value of assets and liabilities
           acquired, net                                                128,824
         Premium paid for deposits                                      366,581
                                                                    -----------

           Deposits assumed                                         $ 6,440,105
                                                                    ===========
</TABLE>





   The accompanying notes are an integral part of these financial statements.



                                      F-5


<PAGE>   265
                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                          NOTES TO FINANCIAL STATEMENTS
                                   (UNAUDITED)

1.      BASIS OF PRESENTATION

        The accompanying unaudited consolidated financial statements have been
        prepared in a condensed format and, therefore, do not include all of the
        information and footnotes required by generally accepted accounting
        principles for complete financial statements. However, in the opinion of
        management, all adjustments, consisting only of normal recurring
        adjustments, considered necessary for a fair presentation have been
        reflected in the financial statements. The results of operations for the
        nine months ended September 30, 1998 are not necessarily indicative of
        the results to be expected for the full year. Certain reclassifications
        have been made to prior period amounts to present them on a basis
        consistent with classifications for the nine months ended September 30,
        1998.

2.      INVESTMENT SECURITIES

        The amortized cost and estimated market value of investment securities
        at September 30, 1998 and December 31, 1997 consisted of the following:

        Available-for-Sale:

<TABLE>
<CAPTION>
                                                                September 30, 1998
                                           -------------------------------------------------------------
                                                               Gross           Gross         Estimated
                                            Amortized       Unrealized      Unrealized        Market
                                              Cost             Gains          Losses           Value
                                           ------------     ----------      ----------      ------------
      <S>                                 <C>               <C>            <C>              <C>
        U.S. Government agencies           $ 21,739,880     $ 252,262        $ (58,642)     $21,933,500
        Obligations of states and
          political subdivisions              7,820,876       238,728          (11,204)       8,048,400
        Federal Reserve Bank stock              150,900                                         150,900
        Federal Home Loan Bank stock            411,000                                         411,000
                                           ------------     ---------        ---------      -----------
                                           $ 30,122,656     $ 490,990        $ (69,846)     $30,543,800
                                           ============     =========        =========      ===========
</TABLE>

        Net unrealized gains on available-for-sale investment securities
        totaling $421,144 were recorded net of $152,787 in tax liabilities as a
        separate component of stockholders' equity at September 30, 1998. There
        were no sales of available-for-sale investment securities for the nine
        month period ended September 30, 1998.





                                      F-6


<PAGE>   266
                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                          NOTES TO FINANCIAL STATEMENTS
                                   (UNAUDITED)
                                   (Continued)

2.      INVESTMENT SECURITIES (Continued)

        Available-for-Sale: (Continued)


<TABLE>
<CAPTION>
                                                                   December 31, 1997
                                              -----------------------------------------------------------
                                                                 Gross           Gross         Estimated
                                                Amortized      Unrealized      Unrealized        Market
                                                  Cost           Gains          Losses           Value
                                              ------------    -----------    ------------     -----------
     <S>                                      <C>             <C>            <C>              <C>
        U.S. Government agencies              $ 13,534,887    $ 126,463      $ (46,350)       $13,615,000
        Obligations of states and
          political subdivisions                 1,573,256       66,738           (994)         1,639,000
        Federal Reserve Bank stock                 150,900                                        150,900
        Federal Home Loan Bank stock               393,600                                        393,600
                                              ------------    ---------      ---------        -----------
                                              $ 15,652,643    $ 193,201      $ (47,344)       $15,798,500
                                              ============    =========      =========        ===========
</TABLE>

        Net unrealized gains on available-for-sale investment securities
        totaling $145,857 were recorded net of $56,680 in tax liabilities as a
        separate component of stockholders' equity at December 31, 1997.
        Proceeds and gross realized gains from the sale of available-for-sale
        investment securities for the nine month period ended September 30, 1997
        totaled $2,186,980 and $16,292, respectively.

        Held-to-Maturity:

<TABLE>
<CAPTION>

                                                                   September 30, 1998
                                              -----------------------------------------------------------
                                                                 Gross           Gross         Estimated
                                                Amortized      Unrealized      Unrealized        Market
                                                  Cost           Gains          Losses           Value
                                              ------------    -----------    ------------     -----------
     <S>                                      <C>               <C>            <C>             <C>
        U.S. Government agencies              $  2,054,428     $   31,472                       $2,085,900
        Obligations of states and
          political subdivisions                   834,816         18,784                          853,600
                                              ------------     ----------     ----------        ----------
                                              $  2,889,244     $   50,256     $       --        $2,939,500
                                              ============     ==========     ==========        ==========

</TABLE>



                                      F-7



<PAGE>   267
                     WESTERN SIERRA BANCORP AND SUBSIDIARY

                         NOTES TO FINANCIAL STATEMENTS
                                  (UNAUDITED)
                                  (Continued)

2.      INVESTMENT SECURITIES (Continued)

        Held-to-Maturity: (Continued)

<TABLE>
<CAPTION>

                                                                December 31, 1997
                                             -----------------------------------------------------------
                                                                Gross           Gross         Estimated
                                               Amortized      Unrealized      Unrealized        Market
                                                 Cost           Gains          Losses           Value
                                             ------------    -----------    ------------     -----------
     <S>                                     <C>             <C>            <C>            <C>
        U.S. Government agencies              $ 4,065,583      $  36,417                     $ 4,102,000
        Obligations of states and
          political subdivisions                  884,463          5,537                         890,000
                                              -----------      ---------      ----------     -----------
                                              $ 4,950,046      $  41,954      $       --     $ 4,992,000
                                              ===========      =========      ==========     ===========
</TABLE>


        There were no sales or transfers of held-to-maturity investment
        securities for the nine month periods ended September 30, 1998 and 1997,
        respectively.





                                      F-8



<PAGE>   268

                    WESTERN SIERRA BANCORP AND SUBSIDIARY

                         NOTES TO FINANCIAL STATEMENTS
                                  (UNAUDITED)
                                  (Continued)

2.      INVESTMENT SECURITIES (Continued)

        The amortized cost and estimated market value of investment securities
        at September 30, 1998 by contractual maturity are shown below. Expected
        maturities will differ from contractual maturities because the issuers
        of the securities may have the right to call or prepay obligations with
        or without call or prepayment penalties.

<TABLE>
<CAPTION>
                                          Available-for-Sale         Held-to-Maturity
                                       ------------------------   ----------------------
                                                     Estimated                 Estimated
                                        Amortized     Market      Amortized      Market
                                          Cost        Value         Cost         Value
                                       ----------  -----------    ----------  ----------
     <S>                              <C>          <C>            <C>           <C>
        After one year through
          five years                   $  500,000  $   500,300
        After five years through
          ten years                     5,002,108    5,125,000    $1,500,000  $1,528,400
        After ten years                 2,641,110    2,733,400       500,000     500,800
                                       ----------  ------------   ----------  ----------
                                        8,143,218    8,358,700     2,000,000   2,029,200

        Investment securities
          not due at a single
          maturity date:
           Mortgage-backed
             securities                 9,539,139    9,500,800        54,428      56,700
           SBA loan pools               4,057,523    4,074,000
           Municipal bonds              7,820,876    8,048,400       834,816     853,600
           Federal Reserve Bank
             stock                        150,900      150,900
           Federal Home Loan
             Bank stock                   411,000      411,000
                                      -----------  -----------    ----------  ----------
                                      $30,122,656  $30,543,800    $2,889,244  $2,939,500
                                      ===========  ===========    ==========  ==========

</TABLE>

        Investment securities with amortized costs totaling $7,087,451 and
        $8,495,865 and market values totaling $7,261,600 and $8,565,000 were
        pledged to secure public deposits, treasury, tax and loan accounts and
        the Federal Reserve Bank borrowing line at September 30, 1998 and
        December 31, 1997, respectively.




                                       F-9


<PAGE>   269

                    WESTERN SIERRA BANCORP AND SUBSIDIARY

                         NOTES TO FINANCIAL STATEMENTS
                                  (UNAUDITED)
                                  (Continued)

3.      LOANS AND LEASES

        Outstanding loans and leases are summarized below:

<TABLE>
<CAPTION>
                                                     September 30,   December 31,
                                                         1998            1997
                                                    --------------   ------------
     <S>                                            <C>              <C>
        Commercial                                   $18,708,168     $14,882,162
        Real estate-mortgage                          46,633,773      40,051,471
        Real estate-construction                       7,685,776      13,263,326
        Lease financing                                1,442,542         697,499
        Installment                                      582,953         615,391
                                                     -----------     -----------
                                                      75,053,212      69,509,849

        Deferred loan and lease origination
          fees and costs, net                           (209,037)       (371,013)
        Allowance for loan and lease losses           (1,024,738)       (947,865)
                                                     -----------     -----------
                                                     $73,819,437     $68,190,971
                                                     ===========     ===========
</TABLE>

        Changes in the allowance for loan and lease losses were as follows:

<TABLE>
<CAPTION>

                                               Nine Month Periods Ended
                                                     September 30,        Year Ended
                                               -----------------------    December 31,
                                                   1998         1997         1997
                                               ----------   ----------    ---------
     <S>                                      <C>           <C>           <C>
        Balance, beginning of year             $  947,865   $  707,066    $ 707,066
        Provision charged to operations           250,000      193,000      243,000
        Losses charged to allowance              (186,813)                   (3,000)
        Recoveries                                 13,686          600          799
                                               ----------   ----------    ---------
                                               $1,024,738   $  900,666    $ 947,865
                                               ==========   ==========    =========
</TABLE>

        The recorded investment in loans that were considered to be impaired
        totaled $736,400 and $1,487,000 at September 30, 1998 and December 31,
        1997, respectively. The related allowance for loan losses for these
        loans at September 30, 1998 and December 31, 1997 was $344,900 and
        $207,500, respectively. The average recorded investment in impaired
        loans for the nine month period ended September 30, 1998 and the year
        ended December 31, 1997 was $862,400 and $1,100,000, respectively. The
        Bank recognized $4,000 and $63,119 in interest income on impaired loans
        during the nine month periods ended September 30, 1998 and 1997,
        respectively.

        At September 30, 1998 and December 31,1997, nonaccrual loans totaled
        $736,400 and $1,487,000, respectively. Interest foregone on nonaccrual
        loans totaled $37,434 and $46,713 for the nine month periods ended
        September 30, 1998 and 1997, respectively.

        Salaries and employee benefits totaling $240,540 and $262,015 have been
        deferred as loan origination costs during the nine month periods ended
        September 30, 1998 and 1997, respectively.



                                      F-10


<PAGE>   270

                    WESTERN SIERRA BANCORP AND SUBSIDIARY

                         NOTES TO FINANCIAL STATEMENTS
                                  (UNAUDITED)
                                  (Continued)

4.      OTHER REAL ESTATE

        Other real estate consisted of the following:

<TABLE>
<CAPTION>

                                        September 30,   December 31,
                                            1998            1997
                                        -------------   ------------
       <S>                              <C>              <C>
        Other real estate               $  1,903,308     $ 1,241,776
        Valuation allowance                 (349,972)       (274,972)
                                        ------------     -----------
                                        $  1,553,336     $   966,804
                                        ============     ===========
</TABLE>

        Changes in the allowance for losses on other real estate were as
        follows:

<TABLE>
<CAPTION>
                                          Nine Month Periods Ended
                                                September 30,          Year Ended
                                        ---------------------------   December 31,
                                            1998            1997          1997
                                        -----------      ----------   ------------
     <S>                                <C>              <C>           <C>
        Balance, beginning of year      $   274,972
        Provision charged to
          operations                         75,000      $  274,972    $ 274,972
                                        -----------      ----------    ---------
          Balance, end of period        $   349,972      $  274,972    $ 274,972
                                        ===========      ==========    =========
</TABLE>

5.      BANK PREMISES AND EQUIPMENT

        Bank premises and equipment consisted of the following:

<TABLE>
<CAPTION>
                                       September 30,     December 31,
                                           1998              1997
                                       -------------     ------------
     <S>                                <C>              <C>
        Land                            $ 1,175,394      $   720,640
        Building                          1,490,089        1,484,566
        Furniture, fixtures
          and equipment                   2,418,090        2,211,896
        Leasehold improvements              252,637          245,677
        Construction in progress            175,460           80,081
                                        -----------      -----------
                                          5,511,670        4,742,860

          Less accumulated
           depreciation and
           amortization                  (2,030,758)      (1,715,782)
                                        -----------      -----------
                                        $ 3,480,912      $ 3,027,078
                                        ===========      ===========
</TABLE>

        Depreciation and amortization included in occupancy and equipment
        expense totaled $329,770 and $267,018 for the nine month periods ended
        September 30, 1998 and 1997, respectively.



                                      F-11
<PAGE>   271

                    WESTERN SIERRA BANCORP AND SUBSIDIARY

                         NOTES TO FINANCIAL STATEMENTS
                                  (UNAUDITED)
                                  (Continued)


6.      ACCRUED INTEREST RECEIVABLE AND OTHER ASSETS

        Accrued interest receivable and other assets consisted of the following:

<TABLE>
<CAPTION>

                                                 September 30,   December 31,
                                                     1998            1997
                                                 -------------   ------------
       <S>                                        <C>            <C>
        Accrued interest receivable               $   783,877    $   752,368
        Cash surrender value of officer life
          insurance policies                          362,645        349,722
        Deferred tax assets, net                      388,207        484,000
        Deposit premium, net                          308,536        336,031
        Other                                         824,502        391,390
                                                  -----------    -----------
                                                  $ 2,667,767    $ 2,313,511
                                                  ===========    ===========
</TABLE>

7.      INTEREST-BEARING DEPOSITS

        Interest-bearing deposits consisted of the following:

<TABLE>
<CAPTION>
                                                 September 30,   December 31,
                                                     1998            1997
                                                 -------------   ------------
     <S>                                          <C>            <C>
        Savings                                   $ 7,944,270    $ 7,198,335
        NOW accounts                               10,793,085      9,695,696
        Money market                                6,312,581     10,570,276
        Time, $100,000 or more                     29,752,423     15,533,010
        Other time                                 37,374,726     36,497,137
                                                  -----------    -----------
                                                  $92,177,085    $79,494,454
                                                  ===========    ===========
</TABLE>

        Interest expense recognized on interest-bearing deposits consisted of
        the following:

<TABLE>
<CAPTION>
                                                   Nine Month Periods Ended
                                                         September 30,
                                                  --------------------------
                                                     1998           1997
                                                  -----------    -----------
     <S>                                          <C>             <C>
        Savings                                   $   104,822    $   114,531
        NOW accounts                                   75,990         78,847
        Money market                                  138,517        154,469
        Time, $100,000 or more                        794,153        499,518
        Other time                                  1,488,082      1,370,061
                                                  -----------    -----------
                                                  $ 2,601,564    $ 2,217,426
                                                  ===========    ===========
</TABLE>



                                      F-12
<PAGE>   272

                    WESTERN SIERRA BANCORP AND SUBSIDIARY

                         NOTES TO FINANCIAL STATEMENTS
                                  (UNAUDITED)
                                  (Continued)


8.      EARNINGS PER SHARE

        A reconciliation of the numerators and denominators of the basic and
        diluted earnings per share computations is as follows:

<TABLE>
<CAPTION>

                                                             Weighted
                                                              Average
                                                             Number of
               For the Nine Month                Net          Shares       Per Share
                  Periods Ended                 Income      Outstanding     Amount
        --------------------------------     -----------    -----------    ---------
     <S>                                      <C>           <C>             <C>
        September 30, 1998
        ------------------

        Basic earnings per share              $  835,268      970,810       $   .86
                                                                            =======

        Effect of dilutive stock options                       67,475
                                              ----------    ---------
        Diluted earnings per share            $  835,268    1,038,285       $   .80
                                              ==========    =========       =======

        September 30, 1997
        ------------------

        Basic earnings per share              $  707,718      965,403       $   .73
                                                                            =======

        Effect of dilutive stock options                       43,908
                                              ----------    ---------
        Diluted earnings per share            $  707,718    1,009,311       $   .70
                                              ==========    =========       =======
</TABLE>

9.      COMPREHENSIVE INCOME

        On January 1, 1998, the Company adopted SFAS 130, Reporting
        Comprehensive Income, which establishes standards for the reporting and
        display of comprehensive income and its components in a full set of
        financial statements. The Statement requires that all items that are
        required to be recognized under accounting standards as components of
        comprehensive income be reported. Other comprehensive income, net of
        taxes, was comprised of the unrealized gain on available-for sale
        investment securities for the nine month periods ended September 30,
        1998 and 1997 and totaled $179,180 and $130,745, respectively. Total
        comprehensive income, net of taxes, was $1,014,448 and $838,463 for the
        nine month periods ended September 30, 1998 and 1997, respectively.

10.     NEW ACCOUNTING PRONOUNCEMENT

        In June 1998, the FASB issued Statement No. 133, Accounting for
        Derivative Instruments and Hedging Activities, which is required to be
        adopted in years beginning after June 15, 1999. Because of the Company's
        minimal use of derivatives, Management does not anticipate that the
        adoption of the new Statement will have a significant effect on earnings
        or the financial position of the Company.




                                      F-13
<PAGE>   273

                          INDEPENDENT AUDITOR'S REPORT
                          ----------------------------



The Board of Directors
    and Stockholders
Western Sierra Bancorp
    and Subsidiary

           We have audited the accompanying consolidated balance sheet of
Western Sierra Bancorp and subsidiary as of December 31, 1997 and 1996 and the
related consolidated statements of income, stockholders' equity and cash flows
for each of the three years in the period ended December 31, 1997. These
consolidated financial statements are the responsibility of the Company's
management. Our responsibility is to express an opinion on these consolidated
financial statements based on our audits.

           We conducted our audits in accordance with generally accepted
auditing standards. Those standards require that we plan and perform the audits
to obtain reasonable assurance about whether the financial statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.

           In our opinion, the consolidated financial statements referred to
above present fairly, in all material respects, the consolidated financial
position of Western Sierra Bancorp and subsidiary as of December 31, 1997 and
1996, and the consolidated results of their operations and their cash flows for
each of the three years in the period ended December 31, 1997, in conformity
with generally accepted accounting principles.





                                            /s/ PERRY SMITH & CO., LLP
                                            ------------------------------------
                                                Certified Public Accountants

Sacramento, California
February 6, 1998



                                      F-14
<PAGE>   274

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                           CONSOLIDATED BALANCE SHEET

                           DECEMBER 31, 1997 AND 1996

<TABLE>
<CAPTION>
                                                                  1997                  1996
                                                              ------------          ------------
                           ASSETS
<S>                                                           <C>                   <C>
Cash and due from banks                                       $  5,296,020          $  4,447,407
Federal funds sold                                               6,550,000               100,000
Loans held for sale                                              1,766,851               748,617
Investment securities (market value of
   $20,790,500 in 1997 and $11,739,100
   in 1996) (Note 2)                                            20,748,546            11,734,630
Loans and leases, less allowance for loan and
   lease losses of $947,865 in 1997 and
   $707,066 in 1996 (Note 3)                                    68,190,971            60,901,585
Other real estate (Note 4)                                         966,804             1,197,304
Bank premises and equipment, net (Note 5)                        3,027,078             2,770,761
Accrued interest receivable and other assets
   (Note 6)                                                      2,313,511             1,560,222
                                                              ------------          ------------

                                                              $108,859,781          $ 83,460,526
                                                              ============          ============

                       LIABILITIES AND
                    STOCKHOLDERS' EQUITY

Deposits:
   Non-interest bearing                                       $ 19,214,744          $ 15,488,098
   Interest bearing (Note 7)                                    79,494,454            59,439,072
                                                              ------------          ------------

        Total deposits                                          98,709,198            74,927,170

Accrued interest payable and other liabilities                   1,152,111               813,030
                                                              ------------          ------------

        Total liabilities                                       99,861,309            75,740,200
                                                              ------------          ------------

Commitments and contingencies (Note 9)

Stockholders' equity (Note 10):
   Preferred stock - no par value; 10,000,000 shares
      authorized; none issued                                           --                    --
   Common stock - no par value; 10,000,000 shares
      authorized; issued and outstanding - 946,021
      shares in 1997 and 796,948 shares in 1996                  7,000,846             4,989,275
   Retained earnings                                             1,908,449             2,762,300
   Unrealized gain (loss) on available-for-sale
      investment securities, net of taxes (Note 2)                  89,177               (31,249)
                                                              ------------          ------------

        Total stockholders' equity                            8,998,472             7,720,326
                                                              ------------          ------------

                                                              $108,859,781          $ 83,460,526
                                                              ============          ============
</TABLE>



   The accompanying notes are an integral part of these financial statements.



                                      F-15
<PAGE>   275

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                        CONSOLIDATED STATEMENT OF INCOME

              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
<CAPTION>
                                                      1997                1996                 1995
                                                  -----------          -----------          -----------
<S>                                               <C>                  <C>                  <C>
Interest income:
   Interest and fees on loans and leases          $ 6,977,940          $ 5,543,968          $ 4,937,615
   Interest on Federal funds sold                     210,669              145,574              141,254
   Interest on investment securities:
      Taxable                                       1,171,799              733,987              588,893
      Exempt from Federal income taxes                 70,041               17,521               16,180
                                                  -----------          -----------          -----------

        Total interest income                       8,430,449            6,441,050            5,683,942
                                                  -----------          -----------          -----------

Interest expense:
   Interest on deposits (Note 7)                    3,049,511            2,173,525            1,868,796
   Interest on short-term borrowings
      (Note 8)                                          1,783               11,453                5,795
                                                  -----------          -----------          -----------

        Total interest expense                      3,051,294            2,184,978            1,874,591
                                                  -----------          -----------          -----------

        Net interest income                         5,379,155            4,256,072            3,809,351

Provision for loan and lease losses
   (Note 3)                                           243,000              457,500               80,000
                                                  -----------          -----------          -----------

        Net interest income after
           provision for loan and
           lease losses                             5,136,155            3,798,572            3,729,351
                                                  -----------          -----------          -----------

Non-interest income:
   Service charges and fees                           764,888              687,896              689,759
   Gain on sale of loans                              972,425              684,316              426,998
   Gain (loss) on sale and call of
      investment securities, net
      (Note 2)                                         20,597               11,020              (29,520)
   Other income                                       278,964              308,541              139,755
                                                  -----------          -----------          -----------

        Total non-interest income                   2,036,874            1,691,773            1,226,992
                                                  -----------          -----------          -----------
</TABLE>



                                   (Continued)



                                      F-16
<PAGE>   276

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                        CONSOLIDATED STATEMENT OF INCOME
                                   (Continued)
              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
<CAPTION>
                                                 1997                1996                1995
                                              ----------          ----------          ----------
<S>                                           <C>                 <C>                 <C>
Other expenses:
   Salaries and employee benefits
      (Notes 3 and 14)                        $2,987,918          $2,355,582          $2,090,522
   Occupancy (Notes 5 and 9)                     399,720             351,845             307,998
   Equipment                                     461,138             398,913             369,320
   Other expenses (Note 11)                    1,682,183           1,176,110           1,160,495
                                              ----------          ----------          ----------

        Total other expenses                   5,530,959           4,282,450           3,928,335
                                              ----------          ----------          ----------

        Income before income taxes             1,642,070           1,207,895           1,028,008

Income taxes (Note 12)                           639,000             470,000             377,000
                                              ----------          ----------          ----------

        Net income                            $1,003,070          $  737,895          $  651,008
                                              ==========          ==========          ==========

Basic earnings per share (Note 10)            $     1.08          $      .97          $      .96
                                              ==========          ==========          ==========

Diluted earnings per share (Note 10)          $     1.02          $      .94          $      .94
                                              ==========          ==========          ==========
</TABLE>



                          The accompanying notes are an
                             integral part of these
                              financial statements.



                                      F-17
<PAGE>   277

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                 CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY

              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995

<TABLE>
<CAPTION>
                                                                                                      UNREALIZED
                                                                                                     (LOSS) GAIN
                                                                                                     ON AVAILABLE-
                                           COMMON STOCK             ADDITIONAL                         FOR-SALE
                                  ----------------------------        PAID-IN         RETAINED        INVESTMENT
                                     SHARES          AMOUNT           CAPITAL         EARNINGS        SECURITIES          TOTAL
                                  -----------      -----------      -----------      -----------      -----------      -----------
<S>                               <C>              <C>              <C>              <C>             <C>               <C>
Balance, January 1, 1995              517,600      $ 1,294,000      $ 1,307,500      $ 1,751,852      $   (52,919)     $ 4,300,433

Stock options exercised                21,400           53,500           71,476                                            124,976

7% stock dividend                      36,274           90,685          126,959         (217,644)

4% stock dividend                      22,783           56,958          102,583         (159,541)

Fractional shares                                                                         (1,270)                           (1,270)

Net income                                                                               651,008                           651,008

Net change in unrealized
   loss on available-for-sale
   investment securities, net
   of taxes                                                                                                80,312           80,312
                                  -----------      -----------      -----------      -----------      -----------      -----------

Balance, December 31, 1995            598,057        1,495,143        1,608,518        2,024,405           27,393        5,155,459

Shares exchanged to effect
   merger with the Bank                              1,608,518       (1,608,518)

Stock issued through stock
   offering                           200,000        1,904,922                                                           1,904,922

Stock options exercised and
   related tax benefit                  2,891           20,692                                                              20,692

Unearned ESOP shares
   (Note 14)                           (4,000)         (40,000)                                                            (40,000)

Net income                                                                               737,895                           737,895

Net change in unrealized
   gain on available-for-sale
   investment securities, net
   of taxes                                                                                               (58,642)         (58,642)
                                  -----------      -----------      -----------      -----------      -----------      -----------

Balance, December 31, 1996            796,948        4,989,275                         2,762,300          (31,249)       7,720,326

Stock options exercised and
   related tax benefit                 11,943          118,827                                                             118,827

6% stock dividend                      47,927          617,300                          (617,300)

10% stock dividend                     85,203        1,235,444                        (1,235,444)

Fractional shares                                                                         (4,177)                           (4,177)

Earned ESOP shares
   (Note 14)                            4,000           40,000                                                              40,000

Net income                                                                             1,003,070                         1,003,070

Net change in unrealized
   loss on available-for-sale
   investment securities, net
   of taxes (Note 2)                                                                                      120,426          120,426
                                  -----------      -----------      -----------      -----------      -----------      -----------

Balance, December 31, 1997            946,021      $ 7,000,846      $        --      $ 1,908,449      $    89,177      $ 8,998,472
                                  ===========      ===========      ===========      ===========      ===========      ===========
</TABLE>

   The accompanying notes are an integral part of these financial statements.

                                      F-18
<PAGE>   278

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                      CONSOLIDATED STATEMENT OF CASH FLOWS

              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
<CAPTION>
                                                       1997             1996            1995
                                                   -----------      -----------      -----------
<S>                                                <C>              <C>              <C>
Cash flows from operating activities:
   Net income                                      $ 1,003,070      $   737,895      $   651,008
   Adjustments to reconcile net
      income to cash provided by
      operating activities:
        Provision for loan and lease losses            243,000          457,500           80,000
        Depreciation and amortization                  397,903          318,076          316,604
        Deferred loan origination costs and
           fees, net                                    (1,636)         120,039           (2,774)
        Amortization of investment security
           premiums, net                                21,063           39,101           57,272
        (Gain) loss on sale and call of avail-
           able-for-sale investment securities         (16,293)         (11,020)          29,520
        Gain on called held-to-maturity
           investment securities                        (4,304)
        Provision for losses on other real
           estate                                      207,651           90,521
        Loss (gain) on sale of other real
           estate                                       25,802          (78,450)          (8,937)
        Increase in loans held for sale             (1,018,234)        (105,368)        (440,099)
        Increase in accrued interest
           receivable and other assets                (230,030)        (129,292)        (160,865)
        Increase (decrease) in accrued
           interest payable and other
           liabilities                                 419,081          (55,869)         495,557
        Deferred taxes                                (233,000)         (26,000)         (53,000)
                                                   -----------      -----------      -----------

             Net cash provided by
                operating activities                   814,073        1,357,133          964,286
                                                   -----------      -----------      -----------
</TABLE>



                                   (Continued)



                                      F-19
<PAGE>   279

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                      CONSOLIDATED STATEMENT OF CASH FLOWS
                                   (Continued)
              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
<CAPTION>
                                                 1997              1996              1995
                                             ------------      ------------      ------------
<S>                                          <C>               <C>               <C>
Cash flows from investing activities:
   Cash acquired in the purchase of
      selected assets and liabilities of
      another bank                           $  5,944,700
   Proceeds from the sale and call of
      available-for-sale investment
      securities                                4,422,806      $  4,624,994      $  2,625,494
   Proceeds from called held-to-
      maturity investment securities            1,236,435
   Proceeds from matured held-to-
      maturity investment securities              114,380           545,000         1,422,675
   Purchases of available-for-sale
      investment securities                   (12,615,575)       (3,835,745)       (6,157,987)
   Purchases of held-to-maturity
      investment securities                    (3,371,446)       (2,498,017)         (620,562)
   Principal repayments received from
      available-for-sale SBA pools and
      mortgage-backed securities                1,226,887         1,184,545           453,149
   Principal repayments received from
      held-to-maturity mortgage-backed
      securities                                  168,765           131,058            93,089
   Net decrease in interest-bearing
      deposits in banks                                                               100,000
   Net increase in loans and leases            (8,298,384)      (13,462,483)       (8,371,476)
   Purchases of premises and equipment           (529,120)         (109,556)       (1,061,457)
   Purchase of other real estate                                                      (35,000)
   Proceeds from the sale of other real
      estate                                      798,955           419,708            98,997
   Purchase of life insurance policies                                               (305,000)
                                             ------------      ------------      ------------

        Net cash used in
           investing activities               (10,901,597)      (13,000,496)      (11,758,078)
                                             ------------      ------------      ------------
</TABLE>



                                   (Continued)



                                      F-20
<PAGE>   280

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                      CONSOLIDATED STATEMENT OF CASH FLOWS
                                   (Continued)
              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
<CAPTION>
                                                          1997              1996              1995
                                                      ------------      ------------      ------------
<S>                                                   <C>               <C>               <C>
Cash flows from financing activities:
   Net increase in demand, interest-
      bearing and savings deposits                    $  4,134,281      $  2,037,915      $    800,995
   Net increase in time deposits                        13,207,642         9,783,403         9,398,324
   Net (decrease) increase in short-term
      borrowings                                                          (2,000,000)        1,350,000
   Payments for fractional shares                           (4,177)                             (1,270)
   Proceeds from the sale of common
      stock                                                                1,904,922
   Proceeds from issuance of ESOP
      note payable                                                            40,000
   Repayment of ESOP note payable                          (40,000)
   Proceeds from the exercise of
      stock options                                         88,391            16,272           124,976
                                                      ------------      ------------      ------------

        Net cash provided by financing
           activities                                   17,386,137        11,782,512        11,673,025
                                                      ------------      ------------      ------------

        Increase in cash and cash
           equivalents                                   7,298,613           139,149           879,233

Cash and cash equivalents at
   beginning of year                                     4,547,407         4,408,258         3,529,025
                                                      ------------      ------------      ------------

Cash and cash equivalents at
   end of year                                        $ 11,846,020      $  4,547,407      $  4,408,258
                                                      ============      ============      ============

Supplemental disclosure of cash flow information:

      Cash paid during the year for:
        Interest expense                              $  2,909,016      $  2,081,127      $  1,717,971
        Income taxes                                  $    784,000      $    738,000      $    201,602

Non-cash investing activities:
   Real estate acquired through
      foreclosure                                     $    709,846      $  1,307,314      $     35,941

   Net change in unrealized gain (loss)
      on available-for-sale investment
      securities                                      $    196,634      $    (94,116)     $    130,121
</TABLE>



                                   (Continued)



                                      F-21
<PAGE>   281

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                      CONSOLIDATED STATEMENT OF CASH FLOWS
                                   (Continued)
              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


Supplemental schedule related to acquisition:

<TABLE>
<S>                                                                                       <C>
   On February 21, 1997, the Bank acquired certain assets and liabilities of the
      Lincoln branch of Wells Fargo Bank (Note 16):

        Cash                                                                              $5,944,700
        Fair value of assets and liabilities
           acquired, net                                                                     128,824
        Premium paid for deposits                                                            366,581
                                                                                          ----------
             Deposits assumed                                                             $6,440,105
                                                                                          ==========
</TABLE>



                          The accompanying notes are an
                             integral part of these
                              financial statements.



                                      F-22
<PAGE>   282

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS


1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

           General
           -------

           Western Sierra Bancorp (the "Company") was incorporated on July 11,
           1996, and subsequently obtained approval of the Board of Governors of
           the Federal Reserve System to be a bank holding company. On
           December 31, 1996, Western Sierra National Bank (the "Bank")
           consummated a merger with Western Sierra Bancorp that was effected
           through the exchange of one share of the Company's no par value
           common stock for each share of the Bank's $2.50 per share par value
           common stock. The merger was accounted for in a manner similar to
           that of a pooling-of-interests method of accounting.

           The accounting and reporting policies of the Company and its
           subsidiary conform with generally accepted accounting principles and
           prevailing practices within the banking industry.

           Certain reclassifications have been made to prior years' balances to
           conform to classifications used in 1997.

           Principles of Consolidation
           ---------------------------
           The consolidated financial statements include the accounts of the
           Company and its wholly-owned subsidiary, the Bank. All material
           intercompany transactions and accounts have been eliminated in
           consolidation.

           Investment Securities
           ---------------------
           Investments are classified into the following categories:

                     -         Available-for-sale securities, reported at fair
                               value, with unrealized gains and losses excluded
                               from earnings and reported, net of taxes, as a
                               separate component of stockholders' equity.

                     -         Held-to-maturity securities, which management has
                               the positive intent and ability to hold, reported
                               at amortized cost, adjusted for the accretion of
                               discounts and amortization of premiums.

           Management determines the appropriate classification of its
           investments at the time of purchase and may only change the
           classification in certain limited circumstances. All transfers
           between categories are accounted for at fair value.

           Gains or losses on the sale of investment securities are computed on
           the specific identification method. Interest earned on investment
           securities is reported in interest income, net of applicable
           adjustments for accretion of discounts and amortization of premiums.
           In addition, unrealized losses that are other than temporary are
           recognized in earnings for all investments.



                                      F-23
<PAGE>   283

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

           Loans and Leases
           ----------------
           Loans and leases are stated at principal balances outstanding, except
           for loans transferred from loans held for sale which are carried at
           the lower of principal balance or market value at the date of
           transfer, adjusted for accretion of discounts. Interest is accrued
           daily based upon outstanding loan and lease balances. However, when,
           in the opinion of management, loans and leases are considered to be
           impaired and the future collectibility of interest and principal is
           in serious doubt, loans and leases are placed on nonaccrual status
           and the accrual of interest income is suspended. Any interest accrued
           but unpaid is charged against income. Payments received are applied
           to reduce principal to the extent necessary to ensure collection.
           Subsequent payments on these loans and leases, or payments received
           on nonaccrual loans and leases for which the ultimate collectibility
           of principal is not in doubt, are applied first to earned but unpaid
           interest and then to principal.

           An impaired loan or lease is measured based on the present value of
           expected future cash flows discounted at the instrument's effective
           interest rate or, as a practical matter, at the instrument's
           observable market price or the fair value of collateral if the loan
           or lease is collateral dependent. A loan or lease is considered
           impaired when, based on current information and events, it is
           probable that the Bank will be unable to collect all amounts due
           (including both principal and interest) in accordance with the
           contractual terms of the loan or lease agreement.

           Loan and lease origination fees, commitment fees, direct loan and
           lease origination costs and purchase premiums and discounts on loans
           and leases are deferred and recognized as an adjustment of yield, to
           be amortized to interest income over the contractual term of the loan
           or lease. The unamortized balance of deferred fees and costs is
           reported as a component of net loans and leases.

           Allowance for Loan and Lease Losses
           -----------------------------------
           The allowance for loan and lease losses is maintained to provide for
           losses related to impaired loans and leases and other losses that can
           be expected to occur in the normal course of business. The
           determination of the allowance is based on estimates made by
           management, to include consideration of the character of the loan and
           lease portfolio, specifically identified problem loans and leases,
           potential losses inherent in the portfolio taken as a whole and
           economic conditions in the Bank's service area. These estimates are
           particularly susceptible to changes in the economic environment and
           market conditions. The allowance is established through a provision
           for loan and lease losses which is charged to expense.



                                      F-24
<PAGE>   284

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

           Loan Sales and Servicing
           ------------------------
           The Bank adopted Financial Accounting Standards Board Statement No.
           125 (SFAS 125), Accounting for Transfers and Servicing of Financial
           Assets and Extinguishments of Liabilities on January 1, 1997. This
           Statement superseded SFAS 122, Accounting for Mortgage Servicing
           Rights, an Amendment of FASB Statement No. 65, which was adopted by
           the Bank on October 1, 1996. Under SFAS 125, sales of financial
           assets are recognized when the transferred assets are put beyond the
           reach of the transferor and its creditors, even in bankruptcy or
           receivership.

           Under SFAS 125, servicing rights acquired through 1) a purchase or 2)
           the origination of loans which are sold or securitized with servicing
           rights retained are recognized as separate assets or liabilities.
           Servicing assets or liabilities are recorded at the difference
           between the contractual servicing fees and adequate compensation for
           performing the servicing, and are subsequently amortized in
           proportion to and over the period of the related net servicing income
           or expense. Servicing assets are periodically evaluated for
           impairment. Fair values are estimated using discounted cash flows
           based on current market interest rates. For purposes of measuring
           impairment, servicing assets are stratified based on note rate and
           term. The amount of impairment recognized is the amount by which the
           servicing assets for a stratum exceed their fair value. Servicing
           rights acquired during the year ended December 31, 1997 were not
           considered material for disclosure purposes.

           The Bank originates loans that are sold to the Federal Home Loan
           Mortgage Corporation (FHLMC) and other investors. Loans held for sale
           are carried at the lower of cost or market value. Market value is
           determined by the specific identification method as of the balance
           sheet date or the date which investors have committed to purchase the
           loans. At the time the loans are sold, the related right to service
           the loans are either retained, with the Bank earning future servicing
           income, or released in exchange for a one-time servicing-released
           premium. Mortgage loans subsequently transferred to the loan
           portfolio are transferred at the lower of cost or market value at the
           date of transfer. Any difference between the carrying amount of the
           loan and its outstanding principal balance is recognized as an
           adjustment to yield by the interest method. The Bank serviced loans
           for FHLMC totaling approximately $6,648,000 and $7,869,000 as of
           December 31, 1997 and 1996, respectively.

           In addition, the guaranteed portion of certain Small Business
           Administration (SBA) loans are sold to third parties with the Bank
           retaining the unguaranteed portion. The Bank generally receives a
           premium in excess of the adjusted carrying value of the loan at the
           time of sale. The Bank may be required to refund a portion of this
           premium if the borrower defaults or the loan prepays within ninety
           days of the settlement date. However, there were no sales of loans
           subject to these recourse provisions at December 31, 1997, 1996 or
           1995. SBA loans with unpaid balances of $4,181,000 and $2,917,000
           were being serviced for others at December 31, 1997 and 1996,
           respectively.



                                      F-25
<PAGE>   285

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

           Other Real Estate
           -----------------
           Other real estate includes real estate acquired in full or partial
           settlement of loan obligations. When property is acquired, any excess
           of the Bank's recorded investment in the loan balance and accrued
           interest income over the estimated fair market value of the property,
           net of estimated selling costs, is charged against the allowance for
           loan and lease losses. A valuation allowance for losses on other real
           estate is maintained to provide for temporary declines in value. The
           allowance is established through a provision for losses on other real
           estate which is included in other expenses. Subsequent gains or
           losses on sales or writedowns resulting from permanent impairments
           are recorded in other income or expense as incurred.

           Bank Premises and Equipment
           ---------------------------
           Bank premises and equipment are carried at cost. Depreciation is
           determined using the straight-line method over the estimated useful
           lives of the related assets. The useful lives of Bank premises are
           estimated to be thirty years. The useful lives of furniture, fixtures
           and equipment are estimated to be one to fifteen years. Leasehold
           improvements are amortized over the life of the asset or the term of
           the related lease, whichever is shorter. When assets are sold or
           otherwise disposed of, the cost and related accumulated depreciation
           or amortization are removed from the accounts, and any resulting gain
           or loss is recognized in income for the period. The cost of
           maintenance and repairs is charged to expense as incurred.

           Income Taxes
           ------------
           Deferred tax assets and liabilities are recognized for the tax
           consequences of temporary differences between the financial statement
           and tax basis of existing assets and liabilities. On the balance
           sheet, net deferred tax assets are included in accrued interest
           receivable and other assets.

           Cash Equivalents
           ----------------
           For the purpose of the statement of cash flows, cash and due from
           banks and Federal funds sold are considered to be cash equivalents.
           Generally, Federal funds are sold for one day periods.

           Earnings Per Share
           ------------------
           In February 1997, the Financial Accounting Standards Board issued
           Statement No. 128, Earnings per Share, which established new
           standards for computing and presenting earnings per share (EPS). This
           Statement was adopted by the Company for financial statements issued
           for the year ended December 31, 1997 and requires the restatement of
           all prior-period EPS data presented.



                                      F-26
<PAGE>   286

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

           Earnings Per Share (Continued)
           ------------------
           Basic EPS, which excludes dilution, is computed by dividing income
           available to common stockholders by the weighted-average number of
           common shares outstanding for the period and replaces the
           presentation of primary EPS. Diluted EPS reflects the potential
           dilution that could occur if securities or other contracts to issue
           common stock, such as stock options, result in the issuance of common
           stock which shares in the earnings of the Company. Diluted EPS is
           computed similarly to, and replaces the presentation of, fully
           diluted EPS. The treasury stock method has been applied to determine
           the dilutive effect of stock options in computing diluted EPS.
           Earnings per share is retroactively adjusted for stock dividends for
           all periods presented.

           Stock-Based Compensation
           ------------------------
           Stock options are accounted for under the intrinsic value method
           prescribed in Accounting Principles Board Opinion No. 25, Accounting
           for Stock Issued to Employees. Accordingly, compensation cost for
           stock options is measured as the excess, if any, of the quoted market
           price of the Company's stock at the date of grant over the exercise
           price. However, if the fair value of stock-based compensation
           computed under a fair value based method, as prescribed in Statement
           of Financial Accounting Standards No. 123, Accounting for Stock-Based
           Compensation, is material to the financial statements, pro-forma net
           income and earnings per share are disclosed as if the fair value
           method had been applied.

           Use of Estimates
           ----------------
           The preparation of consolidated financial statements in conformity
           with generally accepted accounting principles requires management to
           make estimates and assumptions. These estimates and assumptions
           affect the reported amounts of assets and liabilities at the date of
           the consolidated financial statements and the reported amounts of
           revenues and expenses during the reporting period. Actual results
           could differ from these estimates.



                                      F-27
<PAGE>   287

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

2.         INVESTMENT SECURITIES

           The amortized cost and estimated market value of investment
           securities at December 31, 1997 and 1996 consisted of the following:

           Available-for Sale:

<TABLE>
<CAPTION>
                                                                           1997
                                        --------------------------------------------------------------------------------
                                                                 Gross                  Gross                Estimated
                                         Amortized             Unrealized             Unrealized               Market
                                           Cost                  Gains                  Losses                 Value
                                        ------------          ------------           ------------           ------------
          <S>                           <C>                   <C>                    <C>                    <C>
           U.S. Government
                agencies                $ 13,534,887          $    126,463           $    (46,350)          $ 13,615,000
           Obligations of states
               and political sub-
               divisions                   1,573,256                66,738                   (994)             1,639,000
           Federal Reserve
               Bank stock                    150,900                                                             150,900
           Federal Home Loan
               Bank stock                    393,600                                                             393,600
                                        ------------          ------------           ------------           ------------

                                        $ 15,652,643          $    193,201           $    (47,344)          $ 15,798,500
                                        ============          ============           ============           ============
</TABLE>

           Net unrealized gains on available-for-sale investment securities
           totaling $145,857 were recorded net of $56,680 in tax liabilities as
           a separate component of stockholders' equity at December 31, 1997.
           Proceeds and gross realized gains from the sale and call of
           available-for-sale investment securities for the year ended
           December 31, 1997 totaled $4,422,806 and $16,293, respectively.

<TABLE>
<CAPTION>
                                                                           1996
                                      ---------------------------------------------------------------------------------
                                                                Gross                 Gross                  Estimated
                                         Amortized           Unrealized             Unrealized                 Market
                                            Cost                Gains                 Losses                   Value
                                        -----------          -----------            -----------             -----------
          <S>                           <C>                  <C>                    <C>                     <C>
           U.S. Government
              agencies                  $ 8,171,777          $    12,623            $   (63,400)            $ 8,121,000
           Federal Reserve
              Bank stock                    150,900                                                             150,900
           Federal Home Loan
              Bank stock                    370,200                                                             370,200
                                        -----------          -----------            -----------             -----------

                                        $ 8,692,877          $    12,623            $   (63,400)            $ 8,642,100
                                        ===========          ===========            ===========             ===========
</TABLE>

           Net unrealized losses on available-for-sale investment securities
           totaling $50,777 were recorded net of $19,528 in tax benefits as a
           separate component of stockholders' equity at December 31, 1996.
           Proceeds and gross realized gains and losses from the sale and call
           of available-for-sale investment securities for the year ended
           December 31, 1996 totaled $4,624,994, $14,957 and $3,937,
           respectively. Proceeds and gross realized gains and losses from the
           sale and call of available-for-sale investment securities for the
           year ended December 31, 1995 totaled $2,625,494, $1,620 and $31,140,
           respectively.



                                      F-28
<PAGE>   288

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

2.         INVESTMENT SECURITIES (Continued)

           Held-to Maturity:

<TABLE>
<CAPTION>
                                                               1997
                                     ---------------------------------------------------------
                                                       Gross          Gross         Estimated
                                      Amortized     Unrealized      Unrealized        Market
                                        Cost           Gains          Losses          Value
                                     ----------     ----------      -----------     ----------
          <S>                        <C>            <C>             <C>             <C>
           U.S. Government
               agencies              $4,065,583     $   36,417                      $4,102,000
           Obligations of states
               and political sub-
               divisions                884,463          5,537                         890,000
                                     ----------     ----------       ----------     ----------

                                     $4,950,046     $   41,954       $       --     $4,992,000
                                     ==========     ==========       ==========     ==========
</TABLE>

           Proceeds and gross realized gains on called held-to-maturity
           investment securities for the year ended December 31, 1997 totaled
           $1,236,435 and $4,304, respectively.

<TABLE>
<CAPTION>
                                                               1996
                                     ---------------------------------------------------------
                                                      Gross           Gross         Estimated
                                     Amortized      Unrealized      Unrealized        Market
                                       Cost           Gains           Losses          Value
                                     ---------      ----------      ----------      ----------
<S>                                  <C>            <C>              <C>            <C>
           U.S. Government
               agencies              $2,835,010     $    4,615       $   (625)      $2,839,000
           Obligations of states
               and political sub-
               divisions                257,520            480                         258,000
                                     ----------     ----------       --------       ----------

                                     $3,092,530     $    5,095       $   (625)      $3,097,000
                                     ==========     ==========       ========       ==========
</TABLE>


           There were no sales, calls or transfers of held-to-maturity
           investment securities for the years ended December 31, 1996 and 1995.


                                      F-29
<PAGE>   289

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

2.         INVESTMENT SECURITIES (Continued)

           The amortized cost and estimated market value of investment
           securities at December 31, 1997 by contractual maturity are shown
           below. Expected maturities may differ from contractual maturities
           because the issuers of the securities may have the right to call or
           prepay obligations with or without call or prepayment penalties.

<TABLE>
<CAPTION>
                                                Available-for-Sale                         Held-to-Maturity
                                         --------------------------------          --------------------------------
                                                               Estimated                                Estimated
                                           Amortized             Market             Amortized             Market
                                             Cost                Value                Cost                 Value
                                         -----------          -----------          -----------          -----------
          <S>                          <C>                  <C>                  <C>                  <C>
           Within one year               $ 1,000,088          $   997,000
           After one year
             through five years            1,060,000            1,060,000
           After five years
             through ten years             2,707,296            2,744,000          $ 3,500,152          $ 3,533,000
           After ten years                 2,314,709            2,426,000            1,175,789            1,182,000
                                         -----------          -----------          -----------          -----------

                                           7,082,093            7,227,000            4,675,941            4,715,000

           Investment securities not due
             at a single maturity date:
             Government guar-
               anteed mortgage-
               backed securities           7,373,324            7,369,000               65,431               68,000
             SBA loan pools                  652,726              658,000
             Municipal bonds                                                           208,674              209,000
             Federal Reserve
               Bank stock                    150,900              150,900
             Federal Home
               Loan Bank
               stock                         393,600              393,600
                                         -----------          -----------          -----------          -----------

                                         $15,652,643          $15,798,500          $ 4,950,046          $ 4,992,000
                                         ===========          ===========          ===========          ===========
</TABLE>

           Investment securities with amortized costs totaling $8,495,865 and
           $9,731,880 and market values totaling $8,565,000 and $9,670,000 were
           pledged to secure treasury tax and loan accounts and public deposits
           at December 31, 1997 and 1996, respectively.



                                      F-30
<PAGE>   290
'
                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

3.         LOANS AND LEASES

           Outstanding loans and leases are summarized as follows:

<TABLE>
<CAPTION>
                                                              December 31,
                                                  -----------------------------------
                                                      1997                   1996
                                                  ------------           ------------
          <S>                                    <C>                    <C>
           Commercial                             $ 14,882,162           $ 13,021,706
           Real estate - mortgage                   40,051,471             33,441,843
           Real estate - construction               13,263,326             13,841,966
           Lease financing                             697,499              1,018,563
           Installment                                 615,391                657,222
                                                  ------------           ------------

                                                    69,509,849             61,981,300

           Deferred loan and lease origination
               fees and costs, net                    (371,013)              (372,649)
           Allowance for loan and lease losses        (947,865)              (707,066)
                                                  ------------           ------------

                                                  $ 68,190,971           $ 60,901,585
                                                  ============           ============
</TABLE>

           Changes in the allowance for loan and lease losses were as follows:

<TABLE>
<CAPTION>
                                                          Year Ended December 31,
                                              -------------------------------------------------
                                                1997                1996                1995
                                              ---------           ---------           ---------
          <S>                                <C>                 <C>                 <C>
           Balance, beginning of year         $ 707,066           $ 648,730           $ 620,018
           Provision charged to operations      243,000             457,500              80,000
           Losses charged to allowance           (3,000)           (402,518)            (56,238)
           Recoveries                               799               3,354               4,950
                                              ---------           ---------           ---------

               Balance, end of year           $ 947,865           $ 707,066           $ 648,730
                                              =========           =========           =========
</TABLE>

           The recorded investment in loans that were considered to be impaired
           totaled $1,487,000 and $1,429,000 at December 31, 1997 and 1996,
           respectively. The related allowance for loan losses for these loans
           at December 31, 1997 and 1996 was $207,500 and $62,900, respectively.
           The average recorded investment in impaired loans for the years ended
           December 31, 1997, 1996 and 1995 was $1,100,000, $1,192,000 and
           $500,000, respectively. The Bank recognized $133,617, $101,841 and
           $49,584 in interest income on impaired loans during these same
           periods on a cash basis.

           At December 31, 1997 and 1996, nonaccrual loans totaled $1,487,000
           and $1,429,000, respectively. Interest foregone on nonaccrual loans
           totaled $96,000, $112,000 and $82,000 for the years ended
           December 31, 1997, 1996 and 1995, respectively.

           Salaries and employee benefits totaling $339,415, $277,458 and
           $152,210 have been deferred as loan and lease origination costs
           during 1997, 1996 and 1995, respectively.



                                      F-31
<PAGE>   291

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

4.         OTHER REAL ESTATE

           Other real estate consisted of the following:

<TABLE>
<CAPTION>
                                           December 31,
                                  ---------------------------------
                                     1997                  1996
                                  -----------           -----------
          <S>                    <C>                   <C>
           Other real estate      $ 1,241,776           $ 1,197,304

           Valuation allowance       (274,972)
                                  -----------           -----------

                                  $   966,804           $ 1,197,304
                                  ===========           ===========
</TABLE>

5.         BANK PREMISES AND EQUIPMENT

           Bank premises and equipment consisted of the following:

<TABLE>
<CAPTION>
                                                        December 31,
                                              ----------------------------------
                                                 1997                   1996
                                              -----------           -----------
          <S>                                 <C>                   <C>
           Land                               $   720,640           $   720,640
           Building                             1,484,566             1,473,069
           Furniture, fixtures and equipment    2,211,896             1,763,363
           Leasehold improvements                 245,677               225,061
           Construction in progress                80,081
                                              -----------           -----------

                                                4,742,860             4,182,133
               Less accumulated
                 depreciation and
                 amortization                  (1,715,782)           (1,411,372)
                                              -----------           -----------

                                              $ 3,027,078           $ 2,770,761
                                              ===========           ===========
</TABLE>

           Depreciation and amortization included in occupancy and equipment
           expense totaled $366,803, $317,526 and $301,727 for the years ended
           December 31, 1997, 1996 and 1995, respectively.



                                      F-32
<PAGE>   292

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

6.         ACCRUED INTEREST RECEIVABLE AND OTHER ASSETS

           Accrued interest receivable and other assets consisted of the
           following:

<TABLE>
<CAPTION>
                                                                  December 31,
                                                         ------------------------------
                                                            1997                1996
                                                         ----------          ----------
          <S>                                           <C>                 <C>
           Accrued interest receivable                   $  752,368          $  545,613
           Cash surrender value of officer life
               insurance policies (Note 14)                 349,722             332,525
           Deferred tax assets, net (Note 12)               484,000             323,000
           Deposit premium, net (Note 16)                   336,031
           Other                                            391,390             359,084
                                                         ----------          ----------

                                                         $2,313,511          $1,560,222
                                                         ==========          ==========
</TABLE>

7.         INTEREST-BEARING DEPOSITS

           Interest-bearing deposits consisted of the following:

<TABLE>
<CAPTION>
                                                                 December 31,
                                                        --------------------------------
                                                           1997                 1996
                                                        -----------          -----------
          <S>                                          <C>                  <C>
           Savings                                      $ 7,198,335          $ 7,011,315
           NOW accounts                                   9,695,696            8,265,995
           Money market                                  10,570,276            7,068,644
           Time, $100,000 or more                        15,533,010            9,692,733
           Other time                                    36,497,137           27,400,385
                                                        -----------          -----------

                                                        $79,494,454          $59,439,072
                                                        ===========          ===========
</TABLE>

           Interest expense recognized on interest-bearing deposits consisted of
           the following:

<TABLE>
<CAPTION>
                                                         Year Ended December 31,
                                           --------------------------------------------------
                                              1997                1996                1995
                                           ----------          ----------          ----------
          <S>                            <C>                 <C>                 <C>
           Savings                         $  152,374          $  151,592          $  181,749
           NOW accounts                       105,363              92,685              98,775
           Money market                       214,956             199,352             207,086
           Time, $100,000 or more             764,129             394,904             327,624
           Other time                       1,812,689           1,334,992           1,053,562
                                           ----------          ----------          ----------

                                           $3,049,511          $2,173,525          $1,868,796
                                           ==========          ==========          ==========
</TABLE>



                                      F-33
<PAGE>   293

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

8.         SHORT-TERM BORROWING ARRANGEMENTS

           The Bank has $4,000,000 in unsecured borrowing arrangements with two
           of its correspondent banks. At December 31, 1997, the Bank could also
           borrow up to $3,986,000 from the Federal Home Loan Bank, secured by
           investment securities with amortized costs totaling $1,188,590 and
           estimated market values totaling $1,168,000 and mortgage loans with
           carrying values totaling approximately $4,512,000. In addition, as of
           December 31, 1997, the Bank could borrow up to $721,000 on an
           overnight basis from the Federal Reserve Bank, secured by investment
           securities with amortized costs totaling $1,000,000 and estimated
           market values totaling $1,006,000. There were no short-term
           borrowings outstanding at December 31, 1997 and 1996.

9.         COMMITMENTS AND CONTINGENCIES

           Leases
           ------

           The Bank leases certain of its branch offices under noncancelable
           operating leases. Rental payments include minimum rentals, plus
           adjustments for changing price indexes. Future minimum lease payments
           are as follows:

<TABLE>
<CAPTION>
                            Year Ending
                            December 31,
                            ------------
                            <S>               <C>
                                1998          $147,600
                                1999           138,180
                                2000           100,600
                                2001            93,600
                                2002            50,700
                                              --------

                                              $530,680
                                              ========
</TABLE>

           Rental expense included in occupancy expense totaled $161,957,
           $134,610 and $110,853 for the years ended December 31, 1997, 1996 and
           1995, respectively.

           Financial Instruments With Off-Balance-Sheet Risk
           -------------------------------------------------

           The Bank is a party to financial instruments with off-balance-sheet
           risk in the normal course of business in order to meet the financing
           needs of its customers and to reduce its own exposure to fluctuations
           in interest rates. These financial instruments include commitments to
           extend credit and letters of credit. These instruments involve, to
           varying degrees, elements of credit and interest rate risk in excess
           of the amount recognized on the balance sheet.

           The Bank's exposure to credit loss in the event of nonperformance by
           the other party for commitments to extend credit and letters of
           credit is represented by the contractual amount of those instruments.
           The Bank uses the same credit policies in making commitments and
           letters of credit as it does for loans included on the balance sheet.


                                      F-34
<PAGE>   294

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

9.         COMMITMENTS AND CONTINGENCIES (Continued)

           Financial Instruments With Off-Balance-Sheet Risk (Continued)
           -------------------------------------------------

           The following financial instruments represent off-balance-sheet
           credit risk:

<TABLE>
<CAPTION>
                                                           December 31,
                                                 --------------------------------
                                                    1997                 1996
                                                 -----------          -----------
<S>                                              <C>                  <C>
           Commitments to extend credit          $15,267,028          $13,091,131
           Letters of credit                     $   246,288          $   494,949
</TABLE>

           Commitments to extend credit are agreements to lend to a customer as
           long as there is no violation of any condition established in the
           contract. Commitments generally have fixed expiration dates or other
           termination clauses and may require payment of a fee. Since some of
           the commitments are expected to expire without being drawn upon, the
           total commitment amounts do not necessarily represent future cash
           requirements. The Bank evaluates each customer's creditworthiness on
           a case-by-case basis. The amount of collateral obtained, if deemed
           necessary by the Bank upon extension of credit, is based on
           management's credit evaluation of the borrower. Collateral held
           varies, but may include deposits, accounts receivable, inventory,
           equipment, income-producing commercial properties and residential
           real estate.

           Letters of credit are conditional commitments issued by the Bank to
           guarantee the performance or financial obligation of a customer to a
           third party. The credit risk involved in issuing letters of credit is
           essentially the same as that involved in extending loans to
           customers.

           Real estate loan commitments represent 57% of total commitments and
           are generally secured by property with a loan-to-value ratio not to
           exceed 80%. Other loan commitments, predominantly commercial,
           represent 41% of total commitments and are generally unsecured. Home
           equity line commitments represent the remaining 2% of total
           commitments. In addition, the majority of the Bank's loan commitments
           have variable interest rates.

           Significant Concentrations of Credit Risk
           -----------------------------------------

           The Bank grants real estate mortgage, real estate construction,
           commercial, agricultural and consumer loans to customers throughout
           El Dorado, Placer and Sacramento counties.

           Although the Bank has a diversified loan and lease portfolio, a
           substantial portion of its portfolio is secured by commercial and
           residential real estate. However, personal and business income
           represent the primary source of repayment for a majority of these
           loans.

                                      F-35
<PAGE>   295

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

9.         COMMITMENTS AND CONTINGENCIES (Continued)

           Contingencies
           -------------
           The Company and its subsidiary are subject to legal proceedings and
           claims which arise in the ordinary course of business. In the opinion
           of management, the amount of ultimate liability with respect to such
           actions will not materially affect the financial position or results
           of operations of the Company or its subsidiary.

10.        STOCKHOLDERS' EQUITY

           Dividends
           ---------
           Upon declaration by the Board of Directors of the Company, all
           stockholders of record will be entitled to receive dividends. Under
           applicable Federal laws, the Comptroller of the Currency restricts
           the total dividend payment of any national banking association in any
           calendar year to the net income of the year, as defined, combined
           with the net income for the two preceding years, less distributions
           made to stockholders during the same three-year period. At
           December 31, 1997, the Bank had $1,778,723 in retained earnings
           available for dividend payments to the Company.

           Earnings Per Share
           ------------------
           A reconciliation of the numerators and denominators of the basic and
           diluted earnings per share computations is as follows:

<TABLE>
<CAPTION>
                                                                                    Weighted
                                                                                     Average
                                                                                    Number of
                                                                Net                  Shares                 Per-Share
                  For the Year Ended                          Income               Outstanding               Amount
           --------------------------------            ---------------------  ---------------------  ---------------------
<S>                                                    <C>                    <C>                    <C>
           December 31, 1997
           -----------------
           Basic earnings per share                    $           1,003,070                932,531  $                1.08
                                                                                                     =====================

           Effect of dilutive stock options                                                  54,175
                                                       ---------------------  ---------------------
           Diluted earnings per share                  $           1,003,070                986,706  $                1.02
                                                       =====================  =====================  =====================
           December 31, 1996
           -----------------
           Basic earnings per share                    $             737,895                759,017  $                 .97
                                                                                                     =====================

           Effect of dilutive stock options                                                  23,301
                                                       ---------------------  ---------------------
           Diluted earnings per share                  $             737,895                782,318  $                 .94
                                                       =====================  =====================  =====================
</TABLE>



                                      F-36
<PAGE>   296

                          WESTERN SIERRA BANCORP AND SUBSIDIARY

                       NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                       (Continued)

10. STOCKHOLDERS' EQUITY (Continued)

    Earnings Per Share (Continued)
    ------------------

<TABLE>
<CAPTION>
                                                          Weighted
                                                           Average
                                                          Number of
                                              Net          Shares        Per-Share
            For the Year Ended               Income      Outstanding       Amount
     --------------------------------       --------     -----------     ---------
<S>                                         <C>          <C>             <C>
     December 31, 1995
     -----------------

     Basic earnings per share              $651,008         681,030          $ .96
                                                                             =====

     Effect of dilutive stock options                         8,666
                                           --------         -------
     Diluted earnings per share            $651,008         689,696          $ .94
                                           ========         =======          =====

     Stock Options
     -------------
</TABLE>

     In 1997 and 1989, the Board of Directors adopted Stock Option Plans
     for which 218,070 shares of common stock were reserved for issuance
     to employees and Directors under incentive and nonstatutory
     agreements. The plans require that the option price may not be less
     than the fair market value of the stock at the date the option is
     granted, and that the stock must be paid in full at the time the
     option is exercised. The options expire on a date determined by the
     Board of Directors, but not later than ten years from the date of
     grant. The vesting period is determined by the Board of Directors and
     is generally over five years. As a result of the merger between the
     Bank and the Company, no additional shares can be granted under the
     1989 Plan.



                                      F-37
<PAGE>   297

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

10.        STOCKHOLDERS' EQUITY (Continued)

           Stock Options (Continued)
           -------------

           The Company has adopted the disclosure-only provisions of Statement
           of Financial Accounting Standards No. 123, Accounting for Stock-Based
           Compensation. Accordingly, no compensation expense has been
           recognized for its stock option plan. Had compensation cost for the
           plan been determined based on the fair value at grant date for awards
           in 1997, 1996 and 1995 consistent with the provisions of SFAS No.
           123, the Company's net earnings and earnings per share would have
           been reduced to the proforma amounts indicated below:

<TABLE>
<CAPTION>
                                                                  Year Ended December 31,
                                                 ---------------------------------------------------------
                                                      1997                  1996                  1995
                                                 -------------          -------------        -------------
<S>                                              <C>                    <C>                  <C>
           Net earnings - as reported            $   1,003,070          $     737,895        $     651,008
           Net earnings - proforma               $     956,265          $     611,262        $     650,170

           Basic earnings per share -
               as reported                       $        1.08          $         .97        $         .96
           Basic earnings per share -
               proforma                          $        1.03          $         .81        $         .95

           Diluted earnings per share -
               as reported                       $        1.02          $         .94        $         .94
           Diluted earnings per share -
               proforma                          $         .97          $         .78        $         .94
</TABLE>

           The fair value of each option is estimated on the date of grant using
           an option-pricing model with the following assumptions:

<TABLE>
<CAPTION>
                                                                    Year Ended December 31,
                                                    ------------------------------------------------------
                                                         1997                  1996              1995
                                                    ----------------     ----------------   --------------
<S>                                                 <C>                  <C>                <C>
           Dividend yield (not applicable)
           Expected volatility                      23.33% to 25.35%               25.55%            1.17%
           Risk-free interest rate                             5.78%                6.25%            5.35%
           Expected option life                             10 years             10 years          5 years
</TABLE>



                                      F-38
<PAGE>   298

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

10.        STOCKHOLDERS' EQUITY (Continued)

           Stock Options (Continued)
           -------------

           A summary of the combined activity within the plans follows:

<TABLE>
<CAPTION>
                                                    1997                       1996                       1995
                                          ------------------------     -----------------------     -----------------------
                                                          Weighted                    Weighted                    Weighted
                                                           Average                    Average                     Average
                                                          Exercise                    Exercise                    Exercise
                                           Shares          Price       Shares          Price       Shares          Price
                                          -------        ---------     -------        --------     -------        --------
<S>                                       <C>            <C>           <C>            <C>          <C>            <C>
           Options outstanding
             beginning of year            101,283        $    7.16      41,174        $   4.83      72,000        $   4.84

             Options granted               45,000        $   11.14      63,000        $   8.58       1,000        $   4.62
             Options exercised            (11,943)       $    7.22      (2,891)       $   4.82     (21,400)       $   4.82
             Options canceled              (4,198)       $    8.58                                 (16,000)       $   4.89
             Options resulting
                from stock
                dividends                  20,828        $    8.03                                   5,574        $   4.87
                                          -------                       ------                      ------

           Options outstanding,
             end of year                  150,970        $    8.43     101,283        $   7.16      41,174        $   4.83
                                          =======                      =======                      ======

           Options exercisable,
             end of year                   98,078        $    7.31      76,283        $   6.81      41,174        $   4.83
                                          =======                      =======                      ======

           Weighted average
             fair value of options
             granted during the
             year                          45,000        $    6.45      63,000        $   5.32       1,000        $   1.39
                                          =======                      =======                      ======
</TABLE>

           A summary of options outstanding at December 31, 1997 follows:

<TABLE>
<CAPTION>
                                                 Number of           Weighted         Number of
                                                  Options             Average          Options
                                                Outstanding          Remaining       Exercisable
                                                December 31,        Contractual      December 31,
           Range of Exercise Prices                 1997                Life             1997
           ------------------------             ------------        ------------     ------------
<S>                                             <C>                 <C>              <C>
           $  4.62                                   1,298              3 years           1,298
           $  4.82                                  38,374              2 years          38,374
           $  8.58                                  61,798              9 years          48,506
           $ 10.91                                  27,500             10 years           5,500
           $ 11.36                                  15,400             10 years           3,080
           $ 11.59                                   6,600             10 years           1,320
                                                   -------                               ------
                                                   150,970                               98,078
                                                  ========                               ======
</TABLE>


                                      F-39
<PAGE>   299

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

10.        STOCKHOLDERS' EQUITY (Continued)

           Regulatory Capital
           ------------------

           The Bank is subject to certain regulatory capital requirements
           administered by the Office of the Comptroller of the Currency (OCC).
           Failure to meet these minimum capital requirements can initiate
           certain mandatory, and possibly additional discretionary, actions by
           regulators that, if undertaken, could have a direct material effect
           on the Bank's financial statements. Under capital adequacy guidelines
           and the regulatory framework for prompt corrective action, the Bank
           must meet specific capital guidelines that involve quantitative
           measures of the Bank's assets, liabilities and certain
           off-balance-sheet items as calculated under regulatory accounting
           practices. The Bank's capital amounts and classification are also
           subject to qualitative judgments by the regulators about components,
           risk weightings and other factors.

           The Company is subject to similar capital requirements administered
           by the Board of Governors of the Federal Reserve System.

           Quantitative measures established by regulation to ensure capital
           adequacy require the Company and the Bank to maintain minimum amounts
           and ratios of total and Tier 1 capital to risk-weighted assets and of
           Tier 1 capital to average assets as set forth below. The average
           assets and risk-weighted assets of the Company and the Bank are not
           materially different at December 31, 1997. Each of these components
           is defined in the regulations. Management believes that the Company
           and the Bank meet all their capital adequacy requirements as of
           December 31, 1997.

           In addition, the most recent notification from the OCC as of
           December 31, 1997 categorized the Bank as well capitalized under the
           regulatory framework for prompt corrective action. To be categorized
           as well capitalized, the Bank must maintain minimum total risk-based,
           Tier 1 risk-based and Tier 1 leverage ratios. There are no conditions
           or events since that notification that management believes have
           changed the Bank's category.

<TABLE>
<CAPTION>
                                                             1997                         1996                        1995
                                                       -----------------           ------------------          ------------------
                                                       Amount      Ratio           Amount       Ratio          Amount       Ratio
                                                       ------      -----           ------       -----          ------       -----
<S>                                                <C>             <C>          <C>             <C>         <C>             <C>
           Leverage Ratio
           --------------

           Western Sierra Bancorp and
               Subsidiary                          $  8,573,264     8.7%        $  7,751,575     10.2%

           Western Sierra National Bank            $  8,223,819     8.3%        $  7,476,315      9.8%      $   5,128,066     7.9%

           Minimum requirement for "Well-
               Capitalized" institution            $  4,953,300     5.0%        $  3,810,500      5.0%      $   3,252,000     5.0%
           Minimum regulatory requirement          $  3,962,700     4.0%        $  3,048,400      4.0%      $   2,601,600     4.0%
</TABLE>



                                      F-40
<PAGE>   300

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

10.        STOCKHOLDERS' EQUITY (Continued)

           Regulatory Capital (Continued)

<TABLE>
<CAPTION>
                                                             1997                         1996                     1995
                                                      ------------------          -------------------       -------------------
                                                      Amount       Ratio          Amount        Ratio       Amount        Ratio
                                                      ------       -----          ------        -----       ------        -----
<S>                                                <C>             <C>        <C>              <C>       <C>              <C>
           Tier 1 Risk-Based Capital Ratio
           -------------------------------
           Western Sierra Bancorp and
               Subsidiary                          $  8,573,264     10.7%     $   7,751,575     11.6%

           Western Sierra National Bank            $  8,223,819     10.2%     $   7,476,315     11.3%    $   5,128,066     9.3%

           Minimum requirement for "Well-
               Capitalized" institution            $  4,816,900     6.0%      $   4,024,800     6.0%     $   3,353,500     6.0%
           Minimum regulatory requirement          $  3,211,300     4.0%      $   2,683,200     4.0%     $   2,235,600     4.0%

           Total Risk-Based Capital Ratio
           ------------------------------
           Western Sierra Bancorp and
               Subsidiary                          $  9,521,129     11.9%     $   8,458,641     12.6%

           Western Sierra National Bank            $  9,171,684     11.4%     $   8,183,381     12.4%    $   5,776,796     10.3%

           Minimum requirement for "Well-
               Capitalized" institution            $  8,028,200     10.0%     $   6,708,000     10.0%    $   5,589,100     10.0%
           Minimum regulatory requirement          $  6,422,600      8.0%     $   5,366,400      8.0%    $   4,471,300      8.0%
</TABLE>

11.        OTHER EXPENSES

           Other expenses consisted of the following:

<TABLE>
<CAPTION>
                                                                    Year Ended December 31,
                                              -------------------------------------------------------------------
                                                      1997                   1996                    1995
                                              ---------------------  ---------------------  ---------------------
<S>                                           <C>                    <C>                    <C>
           Advertising and promotion          $              86,898  $              60,324  $              83,778
           Regulatory assessments                            46,121                 32,069                 95,937
           Stationery and supplies                          116,042                 98,022                 94,493
           Professional fees                                144,839                 82,994                 94,014
           Other real estate                                341,814                137,840                 83,410
           Other operating expenses                         946,469                764,861                708,863
                                              ---------------------  ---------------------  ---------------------

                                              $           1,682,183  $           1,176,110  $           1,160,495
                                              =====================  =====================  =====================
</TABLE>



                                      F-41
<PAGE>   301

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

12.        INCOME TAXES

           The provision for income taxes for the years ended December 31, 1997,
           1996 and 1995 consisted of the following:

<TABLE>
<CAPTION>
                                                     Federal                 State                   Total
                                              ---------------------  ---------------------  ---------------------
<S>                                           <C>                    <C>                    <C>
           1997
           ----
           Current                            $             642,000  $             230,000  $             872,000
           Deferred                                        (178,000)               (55,000)              (233,000)
                                              ---------------------  ---------------------  ---------------------

                  Income tax expense          $             464,000  $             175,000  $             639,000
                                              =====================  =====================  =====================

           1996
           ----
           Current                            $             351,000  $             145,000  $             496,000
           Deferred                                         (19,000)                (7,000)               (26,000)
                                              ---------------------  ---------------------  ---------------------

                  Income tax expense          $             332,000  $             138,000  $             470,000
                                              =====================  =====================  =====================

           1995
           ----
           Current                            $             316,000  $             114,000  $             430,000
           Deferred                                         (46,000)                (7,000)            (   53,000)
                                              ---------------------  ---------------------  ---------------------

                  Income tax expense          $             270,000  $             107,000  $             377,000
                                              =====================  =====================  =====================
</TABLE>


                                      F-42
<PAGE>   302

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

12.        INCOME TAXES (Continued)

           Deferred tax assets (liabilities) are comprised of the following at
           December 31, 1997 and 1996:

<TABLE>
<CAPTION>
                                                                  1997            1996
                                                               ---------        ---------
<S>                                                            <C>              <C>
           Deferred tax assets:
               Allowance for loan and lease losses             $ 342,000        $ 234,000
               Excess servicing fees                              12,000           13,000
               Deferred compensation                              58,000           40,000
               Future benefit of State tax deduction              76,000           49,000
               Other real estate                                 123,000           37,000
               Deposit purchase premium                            4,000
               Organization costs                                 15,000
               Unrealized loss on available-for-sale
                  investment securities                           20,000
               Other                                              11,000            5,000
                                                               ---------        ---------
                          Total deferred tax assets              641,000          398,000
                                                               ---------        ---------

           Deferred tax liabilities:
               Bank premises and equipment                       (38,000)         (53,000)
               Future liability of State deferred tax
                  assets                                         (41,000)         (22,000)
               Federal Home Loan Bank stock
                  dividends                                      (21,000)
               Unrealized gain on available-for-sale
                  investment securities                          (57,000)
                                                               ---------        ---------
                          Total deferred tax liabilities        (157,000)         (75,000)
                                                               ---------        ---------
                          Net deferred tax assets              $ 484,000        $ 323,000
                                                               =========        =========
</TABLE>

           The provision for income taxes differs from amounts computed by
           applying the statutory Federal income tax rate to operating income
           before income taxes. The items comprising these differences for the
           years ended December 31, 1997, 1996 and 1995 consisted of the
           following:

<TABLE>
<CAPTION>
                                                     1997                         1996                       1995
                                          --------------------------   --------------------------   --------------------------
                                            Amount           Rate %      Amount           Rate %     Amount            Rate %
                                          ---------        ---------   ---------        ---------   ---------        ---------
<S>                                       <C>              <C>         <C>              <C>         <C>              <C>
           Federal income tax
             expense, at statutory
             rate                         $ 558,304             34.0   $ 410,684             34.0   $ 349,523             34.0
           State franchise tax, net
             of Federal tax effect          112,539              6.9      89,588              7.4      75,852              7.4
           Benefit of tax-
             exempt income                  (35,627)            (2.2)    (29,296)            (2.4)    (44,423)            (4.3)
           Other                              3,784               .2        (976)             (.1)     (3,952)             (.4)
                                          ---------        ---------   ---------        ---------   ---------        ---------
                  Total income
                      tax expense         $ 639,000             38.9   $ 470,000             38.9   $ 377,000             36.7
                                          =========        =========   =========        =========   =========        =========
</TABLE>



                                      F-43
<PAGE>   303

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

13.        RELATED PARTY TRANSACTIONS

           During the normal course of business, the Bank enters into
           transactions with related parties, including Directors. These
           transactions are on substantially the same terms and conditions as
           those prevailing for comparable transactions with unrelated parties.

           The following is a summary of the aggregate activity involving
           related party borrowers during 1997:

<TABLE>
<S>                                                    <C>
           Balance, January 1, 1997                    $ 1,083,000

               Disbursements                               376,000
               Amounts repaid                             (240,000)
                                                       -----------
           Balance, December 31, 1997                  $ 1,219,000
                                                       ===========

           Undisbursed commitments to related
               parties, December 31, 1997              $        --
                                                       ===========
</TABLE>

14.        EMPLOYEE BENEFIT PLANS

           Profit Sharing Plan
           -------------------
           The Western Sierra Bancorp and Subsidiary 401KSOP is available to
           employees meeting certain service requirements. The Company's
           contribution to the plan is discretionary and is allocated in the
           same ratio as each participant's compensation bears to total
           compensation for all participants. Contributions totaled $32,200,
           $21,800 and $8,200 in 1997, 1996 and 1995, respectively.

           Employee Stock Ownership Plan
           -----------------------------
           The Employee Stock Ownership Plan (ESOP) is designed to invest
           primarily in securities of the Bank purchased on the open market.
           Contributions to the plan are at the sole discretion of the Board of
           Directors and are limited on a participant-by-participant basis to
           the lesser of $30,000 or 25% of the participant's compensation for
           the plan year. Compensation is defined as all compensation paid
           during the plan year which is considered to be W-2 income, to include
           amounts deferred under the Company's 401KSOP. Employer contributions
           vest at a rate of 20% per year after two years of employment.
           Employee contributions are not permitted.

           During 1996, the ESOP purchased 6,000 shares of the Company's common
           stock. Of these shares, 2,000 shares were purchased with a $20,000
           contribution to the ESOP by the Bank which was recognized as
           compensation expense. The remaining 4,000 shares were purchased with
           the proceeds of a $40,000 loan to the ESOP by a member of the Board
           of Directors.

                                      F-44
<PAGE>   304

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

14.        EMPLOYEE BENEFIT PLANS (Continued)

           Employee Stock Ownership Plan (Continued)
           -----------------------------
           As the debt is repaid, shares are released in proportion to the debt
           service paid during the year and allocated to active employees. The
           debt of the ESOP is recorded as debt of the Company and the shares
           are reported as unearned ESOP shares in stockholders' equity. As
           shares are committed to be released, the Bank reports compensation
           expense equal to the current market price of the shares, and the
           shares are recognized as outstanding for earnings per share and
           capital ratio computations. Dividends on allocated ESOP shares are
           recorded as a reduction of retained earnings and are allocated to the
           participants; dividends on unallocated ESOP shares are recorded as a
           reduction of debt and accrued interest.

           During 1997, the loan was repaid and the 4,000 shares were released
           and allocated to employees. Compensation expense of $75,000 and
           $20,000 and interest expense related to the loan of $2,739 and $1,148
           were recognized for the years ended December 31, 1997 and 1996,
           respectively.

           Allocated and unreleased ESOP shares as of December 31, 1997 and 1996
           were as follows:

<TABLE>
<CAPTION>
                                                      1997             1996
                                                     ------           ------
<S>                                                  <C>              <C>
           Allocated shares                          16,064           12,064
           Unreleased shares                                           4,000
           Shares resulting from stock
               dividends                              2,665
                                                     ------           ------

           Total ESOP shares                         18,729           16,064
                                                    =======          =======

           Fair value of unreleased shares          $    --          $47,000
                                                    =======          =======
</TABLE>

           Salary Continuation Plan
           ------------------------
           In December 1994, the Board of Directors approved a salary
           continuation plan for a key executive. Under this plan, the Company
           is obligated to provide the executive or his designated beneficiary,
           with annual benefits for fifteen years after retirement or death.
           These benefits are substantially equivalent to those available under
           insurance policies purchased by the Company on the life of the
           executive. In addition, the estimated present value of these future
           benefits are accrued over the period from the effective date of the
           plan until the executive's expected retirement date. The expense
           recognized under this plan totaled $11,400 for the years ended
           December 31, 1997 and 1996 and $11,700 for the year ended
           December 31, 1995.

           Under this plan, the Bank invested in single premium life insurance
           policies with cash surrender values totaling $349,722 and $332,525 at
           December 31, 1997 and 1996, respectively. On the balance sheet, the
           cash surrender value of life insurance polices is included in accrued
           interest receivable and other assets.



                                      F-45
<PAGE>   305

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

15.        DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS

           Estimated fair values are disclosed for financial instruments for
           which it is practicable to estimate fair value. These estimates are
           made at a specific point in time based on relevant market data and
           information about the financial instruments. These estimates do not
           reflect any premium or discount that could result from offering the
           Company's entire holdings of a particular financial instrument for
           sale at one time, nor do they attempt to estimate the value of
           anticipated future business related to the instruments. In addition,
           the tax ramifications related to the realization of unrealized gains
           and losses can have a significant effect on fair value estimates and
           have not been considered in any of these estimates.

           Because no market exists for a significant portion of the Company's
           financial instruments, fair value estimates are based on judgments
           regarding current economic conditions, risk characteristics of
           various financial instruments and other factors. These estimates are
           subjective in nature and involve uncertainties and matters of
           significant judgment and therefore cannot be determined with
           precision. Changes in assumptions could significantly affect the fair
           values presented.

           The following methods and assumptions were used by the Company to
           estimate the fair value of its financial instruments at December 31,
           1997 and 1996:

           Cash, cash equivalents and short-term borrowings: For cash, cash
           ------------------------------------------------
           equivalents and short-term borrowings, the carrying amount is
           estimated to be fair value.

           Investment securities: For investment securities, fair values are
           ---------------------
           based on quoted market prices, where available. If quoted market
           prices are not available, fair values are estimated using quoted
           market prices for similar securities and indications of value
           provided by brokers.

           Loans and leases: For variable-rate loans and leases that reprice
           ----------------
           frequently with no significant change in credit risk, fair values are
           based on carrying values. Fair values of loans held for sale are
           estimated using quoted market prices for similar loans. The fair
           values for other loans and leases are estimated using discounted cash
           flow analyses, using interest rates being offered at each reporting
           date for loans and leases with similar terms to borrowers of
           comparable creditworthiness. The carrying amount of accrued interest
           receivable approximates its fair value.

           Cash surrender value of life insurance policies: The fair value of
           -----------------------------------------------
           life insurance policies are based on cash surrender values at each
           reporting date as provided by the insurers.

           Deposits: The fair values for demand deposits are, by definition,
           --------
           equal to the amount payable on demand at the reporting date
           represented by their carrying amount. Fair values for fixed-rate
           certificates of deposit are estimated using discounted cash flow
           analyses using interest rates being offered by the Bank at each
           reporting date for certificates with similar remaining maturities.
           The carrying amount of accrued interest payable approximates its fair
           value.

           Commitments to extend credit: Commitments to extend credit are
           ----------------------------
           primarily for variable rate loans. For these commitments, there is no
           difference between the commitment amounts and their fair values.
           Commitments to fund fixed rate loans and letters of credit are at
           rates which approximate fair value at each reporting date.



                                      F-46
<PAGE>   306

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

15.        DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS (Continued)

           The estimated fair value of the Company's financial instruments are
           as follows:

<TABLE>
<CAPTION>
                                                    December 31, 1997                 December 31, 1996
                                              -----------------------------     -----------------------------
                                                Carrying          Fair            Carrying           Fair
                                                 Amount           Value            Amount            Value
                                              ------------     ------------     ------------     ------------
<S>                                           <C>              <C>              <C>              <C>
           Financial assets:
             Cash and due from banks          $  5,296,020     $  5,296,020     $  4,447,407     $  4,447,407
             Federal funds sold                  6,550,000        6,550,000          100,000          100,000
             Loans held for sale                 1,766,851        1,781,000          748,617          771,000
             Investment securities              20,748,546       20,790,500       11,734,630       11,739,100
             Loans and leases                   68,190,971       67,644,000       60,901,585       60,117,000
             Accrued interest receivable           752,368          752,368          545,613          545,613
             Cash surrender value of life
                insurance policies                 349,722          349,722          332,525          332,525
                                              ------------     ------------     ------------     ------------

                                              $103,654,478     $103,163,610     $ 78,810,377     $ 78,052,645
                                              ============     ============     ============     ============

           Financial liabilities:
             Deposits                         $ 98,709,198     $ 98,716,000     $ 74,927,170     $ 74,967,000
             Accrued interest payable              518,955          518,955          376,677          376,677
                                              ------------     ------------     ------------     ------------

                                              $ 99,228,153     $ 99,234,955     $ 75,303,847     $ 75,343,677
                                              ============     ============     ============     ============

           Off-balance-sheet financial
             instruments:
                Commitments to extend
                  credit                      $ 15,267,028     $ 15,267,028     $ 13,091,131     $ 13,091,131
                Letters of credit                  246,288          246,288          494,949          494,949
                                              ------------     ------------     ------------     ------------

                                              $ 15,513,316     $ 15,513,316     $ 13,586,080     $ 13,586,080
                                              ============     ============     ============     ============
</TABLE>

16.        BRANCH ACQUISITION

           The Bank acquired certain assets and liabilities of the Lincoln
           branch of Wells Fargo Bank on February 21, 1997, summarized as
           follows:

<TABLE>
<S>                                                                      <C>
                     Cash                                                $      5,944,700
                     Fair value of assets and liabilities
                          acquired, net                                           128,824
                     Premium paid for deposits                                    366,581
                                                                         ----------------
                               Deposits assumed                          $      6,440,105
                                                                         ================
</TABLE>

           The deposit premium is included on the consolidated balance sheet in
           accrued interest receivable and other assets and is being amortized
           using the straight-line method over ten years. Amortization expense
           totaled $30,550 for the year ended December 31, 1997.



                                      F-47
<PAGE>   307

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

17.       PARENT ONLY CONDENSED FINANCIAL STATEMENTS

                                 BALANCE SHEET

                           DECEMBER 31, 1997 AND 1996


<TABLE>
<CAPTION>
                                                                       1997                    1996
                                                                 ----------------         ---------------
<S>                                                              <C>                      <C>
                      ASSETS

           Cash and due from banks                               $        205,792         $       258,067
           Investment in subsidiary                                     8,649,027               7,445,066
           Available-for-sale investment
                securities                                                  5,000
           Construction in progress                                        80,081
           Other assets                                                    58,572                  17,193
                                                                 ----------------         ---------------

                                                                 $      8,998,472         $     7,720,326
                                                                 ================         ===============

                       STOCKHOLDERS' EQUITY

           Common stock                                          $      7,000,846         $     4,989,275
           Retained earnings                                            1,908,449               2,762,300
           Unrealized gain (loss) on available-for-sale
                investment securities, net of taxes                        89,177                 (31,249)
                                                                 ----------------         ---------------

                                                                 $      8,998,472         $     7,720,326
                                                                 ================         ===============
</TABLE>



                                      F-48
<PAGE>   308

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

17.       PARENT ONLY CONDENSED FINANCIAL STATEMENTS (Continued)

                               STATEMENT OF INCOME
                  FOR THE YEAR ENDED DECEMBER 31, 1997 AND THE
              PERIOD FROM JULY 11, 1996 (DATE OPERATIONS COMMENCED)
                              TO DECEMBER 31, 1996

<TABLE>
<CAPTION>
                                                                                1997                               1996
                                                                        ---------------------             ---------------------
<S>                                                                     <C>                               <C>
           Income:
                Dividends declared by subsidiary-
                     eliminated in consolidation
                Interest income                                         $               1,565             $             300,000
                                                                        ---------------------             ---------------------

                     Total interest income                                              1,565                           300,000
                                                                        ---------------------             ---------------------

           Expenses:
                Interest expense                                                                                          1,437
                Professional fees                                                      13,023                            32,026
                Director fees                                                          40,800
                Other expenses                                                         16,207                             8,277
                                                                        ---------------------             ---------------------

                     Total expenses                                                    70,030                            41,740
                                                                        ---------------------             ---------------------

                     (Loss) income before equity in
                          undistributed income of subsidiary                          (68,465)                          258,260

           Equity in undistributed income of subsidiary                             1,043,535                           462,635
                                                                        ---------------------             ---------------------

                     Income before income tax benefit                                 975,070                           720,895

           Income tax benefit                                                          28,000                            17,000
                                                                        ---------------------             ---------------------

                     Net income                                         $           1,003,070             $             737,895
                                                                        =====================             =====================
</TABLE>

                                      F-49
<PAGE>   309

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

17.       PARENT ONLY CONDENSED FINANCIAL STATEMENTS (Continued)

                        STATEMENT OF STOCKHOLDERS' EQUITY
                  FOR THE YEAR ENDED DECEMBER 31, 1997 AND THE
              PERIOD FROM JULY 11, 1996 (DATE OPERATIONS COMMENCED)
                              TO DECEMBER 31, 1996

<TABLE>
<CAPTION>
                                                                                                  UNREALIZED
                                                                                                 (LOSS) GAIN
                                                                                                 ON AVAILABLE-
                                                      COMMON STOCK                                 FOR-SALE
                                                                                  RETAINED        INVESTMENT
                                                SHARES            AMOUNT          EARNINGS         SECURITIES        TOTAL
                                           ---------------   ---------------   ---------------   --------------  -------------
<S>                                        <C>               <C>               <C>               <C>             <C>
           Common stock issued                       1,000   $        10,000                                     $      10,000

           Common stock issued
             to effect merger with
             the Bank                              800,948         5,029,275   $     2,024,405   $      (31,249)     7,022,431

           Repurchase of common
             stock                                  (1,000)          (10,000)                                          (10,000)

           Unearned ESOP shares                     (4,000)          (40,000)                                          (40,000)

           Net income                                                                  737,895                         737,895
                                           ---------------   ---------------   ---------------   --------------  -------------

           Balance,
             December 31, 1996                     796,948         4,989,275         2,762,300          (31,249)     7,720,326

           Stock options exercised
             and related tax benefit                11,943           118,827                                           118,827

           6% stock dividend                        47,927           617,300          (617,300)

           10% stock dividend                       85,203         1,235,444        (1,235,444)

           Fractional shares                                                            (4,177)                         (4,177)

           Earned ESOP shares                        4,000            40,000                                            40,000

           Net income                                                                1,003,070                       1,003,070

           Net change in unrealized
             loss on available-for-
             sale investment secur-
             ities, net of taxes                                                                        120,426        120,426
                                           ---------------   ---------------   ---------------   --------------  -------------

           Balance,
             December 31, 1997                     946,021   $     7,000,846   $     1,908,449   $       89,177  $   8,998,472
                                           ===============   ===============   ===============   ==============  =============
</TABLE>



                                      F-50
<PAGE>   310

                      WESTERN SIERRA BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (Continued)

17.        PARENT ONLY CONDENSED FINANCIAL STATEMENTS (Continued)

                             STATEMENT OF CASH FLOWS
                  FOR THE YEAR ENDED DECEMBER 31, 1997 AND THE
              PERIOD FROM JULY 11, 1996 (DATE OPERATIONS COMMENCED)
                              TO DECEMBER 31, 1996

<TABLE>
<CAPTION>
                                                                                  1997                    1996
                                                                            ----------------        ---------------
<S>                                                                         <C>                     <C>
           Cash flows from operating activities:
                Net income                                                  $      1,003,070        $       737,895
                Adjustments to reconcile net income to net
                     cash (used in) provided by operating activities:
                          Undistributed earnings of subsidiary                    (1,043,535)              (462,635)
                          Increase in other assets                                   (10,943)               (17,193)
                                                                            ----------------        ---------------

                               Net cash (used in) provided by
                                    operating activities                             (51,408)               258,067
                                                                            ----------------        ---------------

           Cash flows from investing activities:
                Purchase of available-for-sale investment
                     security                                                         (5,000)
                Increase in construction in progress                                 (80,081)
                                                                             ---------------         --------------
                               Net cash used in investing
                                    activities                                       (85,081)
                                                                             ---------------         --------------
           Cash flows from financing activities:
                Proceeds from issuance of common stock                                                       10,000
                Proceeds from issuance of note payable                                                      120,000
                Repurchase of common stock                                                                  (10,000)
                Repayment of note payable                                                                  (120,000)
                Payments for fractional shares                                        (4,177)
                Proceeds from exercise of stock options                               88,391
                                                                            ----------------        ---------------

                               Net cash provided by financing
                                    activities                                        84,214
                                                                            ----------------        ---------------
           Net (decrease) increase in cash and cash
                equivalents                                                          (52,275)               258,067
                                                                            ----------------        ---------------

           Cash and cash equivalents at beginning of year                            258,067
                                                                            ----------------        ----------------

           Cash and cash equivalents at end of year                         $        205,792        $       258,067
                                                                            ================        ===============

           Supplemental disclosures of cash flow information:

           Non-cash investing activities:
                Net change in unrealized gain (loss) on
                     available-for-sale investment securities               $        196,634        $       (50,777)

           Non-cash financing activities:
                Issuance of common stock in exchange for
                     assets and liabilities of the Bank                                             $     7,022,431
</TABLE>


                                      F-51
<PAGE>   311

                               LAKE COMMUNITY BANK

                                  BALANCE SHEET
                                   (Unaudited)


<TABLE>
<CAPTION>
                                                 September 30, 1998    December 31, 1997
                                                 ------------------    -----------------
<S>                                                 <C>                  <C>
                ASSETS

Cash and due from banks                             $   4,557,969        $   5,236,194
Federal funds sold                                      3,500,000            4,000,000
Loans held for sale                                       620,376              680,434
Interest-bearing deposits in banks                      4,554,000            4,557,000
Available-for-sale investment
    securities (Note 3)                                12,041,010           11,976,000
Loans, less allowance for loan losses of
    $1,160,490 at September 30, 1998 and
    $952,335 at December 31, 1997 (Note 4)             53,776,976           53,209,573
Bank premises and equipment, net                        2,893,555            3,077,251
Intangible assets, net                                     12,821               59,162
Other real estate                                         629,898              597,949
Accrued interest receivable and
    other assets                                        2,454,557            2,126,193
                                                    -------------        -------------

                                                    $  85,041,162        $  85,519,756
                                                    =============        =============

            LIABILITIES AND
         STOCKHOLDERS' EQUITY

Deposits:
    Non-interest bearing                            $  12,764,797        $  12,926,652
    Interest bearing                                   62,106,190           63,111,481
                                                    -------------        -------------

            Total deposits                             74,870,987           76,038,133

Accrued interest payable and other
    liabilities                                           736,792              821,295
                                                    -------------        -------------

            Total liabilities                          75,607,779           76,859,428
                                                    -------------        -------------

Commitments and contingencies                                --                   --

Stockholders' equity (Note 5):
    Common stock, no par value; 20,000,000
       shares authorized; 1,298,296 shares
       issued and outstanding in 1998 and
       1,240,546 shares in 1997, respectively           3,473,433            3,178,121
    Retained earnings                                   5,795,433            5,442,647
    Accumulated other comprehensive
       income (Notes 2 and 3)                             164,517               39,560
                                                    -------------        -------------

            Total stockholders' equity                  9,433,383            8,660,328
                                                    -------------        -------------

                                                    $  85,041,162        $  82,519,756
                                                    =============        =============
</TABLE>


See accompanying notes to financial statements.


                                      F-52
<PAGE>   312

                               LAKE COMMUNITY BANK

                               STATEMENT OF INCOME
                                   (Unaudited)

             For the Nine months Ended September 30, 1998 and 1997

<TABLE>
<CAPTION>
                                                       1998                1997
                                                   ------------        ------------
<S>                                                <C>                 <C>
Interest income:
    Interest and fees on loans                     $  3,934,633        $  4,146,272
    Interest on federal funds sold                      183,486             122,722
    Interest on deposits in banks                       223,185             165,301
    Interest on investment securities:
       Taxable                                          427,550             371,310
       Exempt from Federal income taxes                  69,848              62,412
                                                   ------------        ------------

    Total interest income                             4,838,702           4,868,017

Interest expense on deposits                          1,915,990           1,894,688
                                                   ------------        ------------

     Net interest income                              2,922,712           2,973,329

Provision for loan losses                               270,000             270,000
                                                   ------------        ------------

     Net interest income after
       provision for loan losses                      2,652,712           2,703,329
                                                   ------------        ------------

Non-interest income:
     Service charges and fees                           493,827             388,609
     Mortgage packaging fees                              3,277               5,299
     Gain on sale of other real estate                      -0-              15,571
     Gain on sale of loans                                7,249              11,908
     Loss on sale of securities                             -0-              <8,315>
                                                   ------------        ------------
     Total non-interest income                          504,353             413,072
                                                   ------------        ------------

Non-interest expense:
     Salaries and related benefits                    1,415,545           1,267,566
     Occupancy expense, net                             212,973             203,597
     Equipment expense                                  271,763             256,933
     Other                                              756,532             680,448
                                                   ------------        ------------

     Total non-interest expense                       2,656,813           2,408,544
                                                   ------------        ------------

     Income before income taxes                         500,252             707,857
Provision for income taxes                              147,466             257,795
                                                   ------------        ------------

     Net income                                    $    352,786        $    450,062
                                                   ============        ============

Basic earnings per share (Note 2)                  $       0.28        $       0.36
                                                   ============        ============

Diluted earnings per share (Note 2)                $       0.27        $       0.35
                                                   ============        ============
</TABLE>


See accompanying notes to financial statements.


                                      F-53
<PAGE>   313

                               LAKE COMMUNITY BANK


                  STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY
                                  (Unaudited)

             For the Nine Months Ended September 30, 1998 and 1997

<TABLE>
<CAPTION>
                                                                                  Accumulated
                                         Common Stock                                Other
                                ----------------------------       Retained      Comprehensive
                                  Shares           Amount          Earnings          Income            Total
                                -----------      -----------      -----------    --------------     -----------
<S>                             <C>              <C>              <C>            <C>                <C>
Prior Year
- ----------

Balance, December 31,
   1996                           1,240,546      $ 3,178,121      $ 5,011,324       $ <40,517>      $ 8,148,928

Net Income                                                            450,062                           450,062

Net change in unrealized
    loss on available-
    for-sale investment
    securities                                                                         61,168           61,168
                                  ---------      -----------      -----------       ---------       -----------
Balance, September 30, 1997       1,240,546      $ 3,178,121      $ 5,461,386       $  20,651       $ 8,660,158
                                  =========      ===========      ===========       =========       ===========

Current Year
- ------------

Balance, December 31, 1997        1,240,546      $ 3,178,121      $ 5,442,647       $   39,560      $ 8,660,328

Stock options exercised
   and related tax benefit           57,750          295,312                                            295,312

Net income                                                            352,786                           352,786

Net change in unrealized
    gain on available-for-
    sale investment
    securities (Notes 2 and 3)                                                         124,957          124,957
                                  ---------      -----------      -----------       ----------      -----------
Balance, September 30, 1998       1,298,296      $ 3,473,433      $ 5,795,433       $  164,517      $ 9,433,383
                                  =========      ===========      ===========       ==========      ===========
</TABLE>


See accompanying notes to financial statements.



                                      F-54
<PAGE>   314

                               LAKE COMMUNITY BANK

                             STATEMENT OF CASH FLOWS
                                   (Unaudited)

                  For the Nine Months Ended September 30, 1998

<TABLE>
<S>                                                          <C>              <C>
Net income                                                                    $   352,786
Adjustments to reconcile net income to net
  cash provided by operating activities:
    Depreciation and amortization expense                 $   253,238
    Provision for loan losses                                 270,000
    Provision for losses on other real estate                  25,000
    Loss on sale of equipment                                  10,967
    Net decrease in loans held for sale                        60,058
    Increase in deferred loan origination
      fees and costs, net                                      22,197
    Increase in accrued interest receivable
      and other assets                                       <392,425>
    Amortization of intangible assets                          46,340
    Increase in accrued interest payable
      and other liabilities                                   250,444
                                                          -----------

        Total adjustments                                                         545,819
                                                                              -----------

        Net cash provided by operating activities                                 898,605

Cash flows from investing activities:
    Net decrease in interest-bearing
      deposits in banks                                         3,000
    Purchase of available-for-sale
      investment securities                                <4,466,047>
    Proceeds from matured available-for-sale
      investment securities                                 1,500,000
    Proceeds from called available-for-sale
      investment securities                                 2,997,789
    Repayment of investment security principal                 90,350
    Net increase in loans                                    <859,599>
    Acquisition of other real estate                          <75,000>
    Capitalized costs on former bank premises                  <5,503>
    Purchase of premises and equipment                        <55,039>
                                                          -----------

        Net cash used in investing activities                                    <870,049>

Cash flows from financing activities:
    Net decrease in short-term
      deposit accounts                                       <460,377>
    Net decrease in time deposits                            <706,769>
    Proceeds from exercise of stock options                   295,312
    Payment of cash dividends                                <334,947>
                                                          -----------

        Net cash used in financing activities                                  <1,206,781>
                                                                              -----------
        Net decrease in cash and cash equivalents                              <1,178,225>

Cash and cash equivalents at December 31, 1997                                  9,236,194
                                                                              -----------
Cash and cash equivalents at September 30, 1998                               $ 8,057,969
                                                                              ===========
</TABLE>


See accompanying notes to financial statements


                                      F-55
<PAGE>   315

                               LAKE COMMUNITY BANK

                             STATEMENT OF CASH FLOWS
                                   (Unaudited)

                  For the Nine Months Ended September 30, 1997

<TABLE>
<S>                                                       <C>              <C>
Net income                                                                 $   450,062
Adjustments to reconcile net income to net
  cash provided by operating activities:
    Depreciation and amortization expense                 $   244,635
    Provision for loan losses                                 270,000
    Loss on sale of available-for-sale
      investment securities                                     8,315
    Gain on sale of other real estate                         <15,571>
    Net increase in loans held for sale                      <465,530>
    Decrease in deferred loan origination
      fees and costs, net                                     <65,341>
    Decrease in accrued interest receivable
      and other assets                                         43,125
    Amortization of intangible assets                          47,326
    Decrease in accrued interest payable
      and other liabilities                                    <7,539>
                                                          -----------
             Total adjustments                                                  59,420
                                                                           -----------
             Net cash used in operating activities                             509,482

Cash flows from investing activities:
    Net increase in interest-bearing
      deposits in banks                                      <101,000>
    Purchase of available-for-sale
      investment securities                                <1,703,906>
    Proceeds from matured available-for-sale
      investment securities                                   300,000
    Proceeds from the sale and call of
      available-for-sale investment securities              2,667,563
    Repayment of investment security principal                 25,588
    Net increase in loans                                  <1,867,001>
    Proceeds from sale of other real estate                   828,254
    Purchase of premises and equipment                        <13,535>
                                                          -----------
             Net cash provided by investing activities                         135,963

Cash flows from financing activities:
    Net decrease in short-term deposit accounts            <1,252,256>
    Net increase in time deposits                           3,529,005
    Purchase of premises and equipment                       <248,109>
                                                          -----------
             Net cash provided by financing activities                       2,028,640
                                                                           -----------
             Net increase in cash and cash equivalents                       2,674,085

Cash and cash equivalents at December 31, 1996                               7,542,415
                                                                           -----------
Cash and cash equivalents at September 30, 1997                            $10,216,500
                                                                           ===========
</TABLE>


See accompanying notes to financial statements.


                                      F-56
<PAGE>   316

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Unaudited)
                               September 30, 1998

1.      BASIS OF PRESENTATION

The accompanying unaudited financial statements have been prepared in condensed
format and, therefore, do not include all of the information and footnotes
required by generally accepted accounting principles for complete financial
statements. However, in the opinion of management, all adjustments, consisting
only of normal recurring adjustments, considered necessary for a fair
presentation have been reflected in the financial statements. The results of
operations for the nine months ended September 30, 1998 are not necessarily
indicative of the results to be expected for the full year. Certain
reclassifications have been made to prior amounts to present them on a basis
consistent with classifications for the nine months ended September 30, 1998.

2.      SUMMARY OF CHANGES IN SIGNIFICANT ACCOUNTING POLICIES

Earnings Per Share
- ------------------

Basic earnings per share are calculated using the weighted average number of
shares of common stock outstanding during the period. Diluted earnings per share
are calculated using the weighted average number of shares of common stock and
common stock equivalents outstanding during the period. The dilutive effect of
stock options outstanding from the application of the treasury stock method has
been considered in the computation of common stock equivalents. A reconciliation
of the numerators and denominators of the basic and diluted earnings per share
computations is as follows:

<TABLE>
<CAPTION>
                                                Weighted
                                                 Average
                                                Number of
    For the Nine Month               Net         Shares        Per Share
      Periods Ended                 Income     Outstanding      Amount
    ------------------              ------     -----------     ---------
<S>                                <C>         <C>               <C>
September 30, 1998
- ------------------

Basic earnings per share           $352,786     1,265,386        $ .28
                                                                 =====
Effect of dilutive stock options                   64,041
                                   --------     ---------
Diluted earnings per share         $352,786     1,329,427        $ .27
                                   ========     =========        =====

September 30, 1997
- ------------------

Basic earnings per share           $450,062     1,240,546        $ .36
                                                                 =====
Effect of dilutive stock options                   36,183
                                   --------     ---------
Diluted earnings per share         $450,062     1,276,729        $ .35
                                   ========     =========        =====
</TABLE>

                                      F-57
<PAGE>   317

2.      SUMMARY OF CHANGES IN SIGNIFICANT ACCOUNTING POLICIES (Continued)

Comprehensive Income
- --------------------

On January 1, 1998, the Bank adopted SFAS 130, Reporting Comprehensive Income,
which establishes standards for the reporting and display of comprehensive
income and its components in a full set of financial statements. The Statement
requires that all items that are required to be recognized under accounting
standards as components of comprehensive income be reported. Other comprehensive
income, net of taxes, was comprised of the unrealized gain on available-for sale
investment securities for the six month periods ended September 30, 1998 and
1997 and totaled $124,957 and $61,168, respectively. Total comprehensive income,
net of taxes, was $477,743 and $511,230 for the nine month periods ended
September 30, 1998 and September 30, 1997, respectively.

3.      INVESTMENT SECURITIES

The amortized cost and estimated market value of available-for-sale investment
securities at September 30, 1998 consisted of the following:

<TABLE>
<CAPTION>
                                                         September 30, 1998
                                  --------------------------------------------------------------
                                                      Gross            Gross          Estimated
                                   Amortized        Unrealized       Unrealized         Market
                                     Cost             Gains            Losses           Value
                                  --------------------------------------------------------------
<S>                               <C>              <C>              <C>              <C>
U.S. Government corporations
  and agencies                    $ 5,958,495      $    36,870                       $ 5,995,365
Corporate bonds                     2,273,569           60,515                         2,334,084
Obligations of state and
  political subdivisions            3,559,679          151,882                         3,711,561
                                  -----------      -----------      -----------      -----------
                                  $11,791,743      $   249,267      $        --      $12,041,010
                                  ===========      ===========      ===========      ===========
</TABLE>

Net unrealized gains on available-for-sale investment securities totaling
$249,267 were recorded net of $84,750 in tax liabilities as a separate component
of stockholders' equity at September 30, 1998. There were no sales of
available-for-sale investment securities for the nine months ended September 30,
1998.

The amortized cost and estimated market value of investment securities at
December 31, 1997 consisted of the following:

<TABLE>
<CAPTION>
                                                          December 31, 1997
                                  --------------------------------------------------------------
                                                      Gross            Gross          Estimated
                                   Amortized        Unrealized       Unrealized         Market
                                     Cost             Gains            Losses           Value
                                  --------------------------------------------------------------
<S>                               <C>              <C>              <C>              <C>
U.S. Government corporations
  and agencies                    $ 7,539,313      $     3,728      $   <31,041>     $ 7,512,000
Obligations of state and
  political subdivisions            3,135,646           87,977             <623>       3,223,000
Corporate bonds                       750,238              931           <1,169>         750,000
Banker's Acceptances                  490,553              447               --          491,000
                                  -----------      -----------      -----------      -----------
                                  $11,915,750      $    93,083      $   <32,833>     $11,976,000
                                  ===========      ===========      ===========      ===========
</TABLE>

                                      F-58
<PAGE>   318
3.      INVESTMENT SECURITIES (Continued)

Net unrealized gains on available-for-sale investment securities totaling
$60,250 were recorded net of $20,690 in tax liabilities as a separate component
of stockholders' equity at December 31, 1997. Proceeds and gross realized gains
and losses from the sale of available-for-sale investment securities for the
nine months ended September 30, 1997 totaled $2,003,719, $597 and $8,912,
respectively.

4.      LOANS

Outstanding loans at September 30, 1998 and December 31, 1997 are summarized
below:

<TABLE>
<CAPTION>
                                               September 30,           December 31,
                                                    1998                1997
                                                -----------          -----------
<S>                                             <C>                  <C>
          Commercial                            $ 4,449,252          $ 5,044,819
          Agricultural                           18,026,210           13,941,616
          Real estate-mortgage                   28,979,719           32,002,981
          Real estate-construction                1,156,812              434,888
          Installment                             2,529,963            2,919,897
                                                -----------          -----------
                                                 55,141,956           54,344,201

          Deferred loan fees                       <204,490>            <182,293>
          Allowance for loan losses              <1,160,490>            <952,335>
                                                -----------          -----------
                                                $53,776,976          $53,209,573
                                                ===========          ===========
</TABLE>

Changes in the allowance for loan losses were as follows:

<TABLE>
<CAPTION>
                                             Nine Month Periods Ended
                                                   September 30,          Year Ended
                                              -----------------------    December 31,
                                                 1998         1997           1997
                                              ----------    ---------    ------------
<S>                                           <C>           <C>           <C>
         Balance, beginning of year           $  952,335    $ 907,661     $ 907,661
         Provision charged to operations         270,000      270,000       263,000
         Losses charged to allowance             <84,746>    <315,000>     <256,712>
         Recoveries                               22,901       30,000        38,386
                                              ----------    ---------     ---------
         Balance, end of period               $1,160,490    $ 892,661     $ 952,335
                                              ==========    =========     =========
</TABLE>

The recorded investment in loans that were considered to be impaired totaled
$661,500 at September 30, 1998, and $1,057,000 at December 31, 1997. The related
allowance for loan losses on these loans at September 30, 1998 and December 31,
1997 was $121,651 and $161,368, respectively. The average recorded investment in
impaired loans for the quarter ended September 30, 1998 was $874,578, and the
Bank did not recognize any interest income on these loans during that same
period.

Nonaccrual loans totaled $1,184,000 and $1,389,000, respectively, at September
30, 1998 and December 31, 1997. Interest foregone on nonaccrual loans totaled
$25,849, and $31 for the nine months ended September 30, 1998 and 1997,
respectively. There were no loans considered to be nonperforming, defined as
loans ninety days or more past due and still accruing interest, as of September
30, 1998 and December 31, 1997.

                                      F-59
<PAGE>   319
4. LOANS (Continued)

Salaries and employee benefits totaling $99,230 and $95,937 have been deferred
as loan origination costs during the nine months ended September 30, 1998 and
1997, respectively.

5.      STOCKHOLDERS' EQUITY

The Bank maintains total risk-based, Tier 1 risk-based and Tier 1 leverage
ratios required by the Federal Deposit Insurance Corporation to be categorized
as well capitalized.

<TABLE>
<CAPTION>
                                             September 30, 1998                December 31, 1997
                                            ---------------------            ---------------------
                                            Amount          Ratio            Amount          Ratio
                                            ------          -----            ------          -----
<S>                                       <C>               <C>            <C>               <C>
  Leverage Ratio
  --------------

Lake Community Bank                       $9,256,000          10.9%        $8,561,600          10.4%

Minimum requirement for
    "Well-Capitalized" institution        $4,204,100           5.0%        $4,124,100           5.0%
Minimum regulatory requirement            $3,363,200           4.0%        $3,299,300           4.0%

  Tier 1 Risk-Based Capital Ratio
  -------------------------------

Lake Community Bank                       $9,256,000          13.5%        $8,561,600          14.5%

Minimum requirement for
    "Well-Capitalized" institution        $4,100,100           6.0%        $3,544,400           6.0%
Minimum regulatory requirement            $2,733,400           4.0%        $2,362,900           4.0%

  Total Risk-Based Capital Ratio
  ------------------------------

Lake Community Bank                      $10,110,200          14.8%        $9,300,000          15.8%

Minimum requirement for
    "Well-Capitalized" institution        $6,833,400          10.0%        $5,885,900          10.0%
Minimum regulatory requirement            $5,466,700           8.0%        $4,708,700           8.0%
</TABLE>

6.      NEW ACCOUNTING PRONOUNCEMENT

In June 1998, the FASB issued Statement No. 133, Accounting for Derivative
Instruments and Hedging Activities, which is required to be adopted in years
beginning after June 15, 1999. Because of the Bank's minimal use of derivatives,
Management does not anticipate that the adoption of the new Statement will have
a significant effect on earnings or the financial position of the Bank.

                                      F-60

<PAGE>   320

                          INDEPENDENT AUDITOR'S REPORT



The Stockholders and
   Board of Directors
Lake Community Bank

           We have audited the accompanying balance sheet of Lake Community Bank
as of December 31, 1997 and 1996 and the related statements of income,
stockholders' equity and cash flows for each of the three years in the period
ended December 31, 1997. These financial statements are the responsibility of
the Bank's management. Our responsibility is to express an opinion on these
financial statements based on our audits.

           We conducted our audits in accordance with generally accepted
auditing standards. Those standards require that we plan and perform the audits
to obtain reasonable assurance about whether the financial statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.

           In our opinion, the financial statements referred to above present
fairly, in all material respects, the financial position of Lake Community Bank
as of December 31, 1997 and 1996, and the results of its operations and its cash
flows for each of the three years in the period ended December 31, 1997, in
conformity with generally accepted accounting principles.





                                            /s/ PERRY SMITH & CO., LLP
                                            ------------------------------------
                                            Certified Public Accountants

Sacramento, California
March 5, 1998


                                      F-61
<PAGE>   321

                               LAKE COMMUNITY BANK

                                  BALANCE SHEET

                           DECEMBER 31, 1997 AND 1996

<TABLE>
<CAPTION>
                                                         1997            1996
                                                     ------------    -----------
<S>                                                  <C>             <C>
             ASSETS

Cash and due from banks                              $  5,236,194    $ 5,042,415
Federal funds sold                                      4,000,000      2,500,000
Loans held for sale                                       680,434        289,066
Interest-bearing deposits in banks                      4,557,000      4,357,000
Available-for-sale investment securities (Note 2)      11,976,000     11,076,000
Loans, less allowance for loan losses of $952,335
   in 1997 and $907,661 in 1996 (Note 3)               53,209,573     52,091,091
Bank premises and equipment, net (Note 4)               3,077,251      3,304,030
Other real estate                                         597,949      1,816,325
Accrued interest receivable and other assets
   (Notes 5, 7 and 12)                                  2,185,355      2,026,230
                                                     ------------    -----------

                                                     $ 85,519,756    $82,502,157
                                                     ============    ===========

          LIABILITIES AND
       STOCKHOLDERS' EQUITY

Deposits:
   Non-interest bearing                              $ 12,926,652    $10,202,155
   Interest bearing (Note 6)                           63,111,481     63,334,438
                                                     ------------    -----------

        Total deposits                                 76,038,133     73,536,593

Accrued interest payable and other liabilities            821,295        816,636
                                                     ------------    -----------

        Total liabilities                              76,859,428     74,353,229
                                                     ------------    -----------

Commitments and contingencies (Note 9)

Stockholders' equity (Note 10):
   Preferred stock, no par value; 10,000,000 shares
      authorized; no shares issued                             --             --
   Common stock - no par value; 20,000,000 shares
      authorized; 1,240,546 shares issued and
      outstanding                                       3,178,121      3,178,121
   Retained earnings                                    5,442,647      5,011,324
   Unrealized gain (loss) on available-for-sale
      investment securities, net of taxes (Note 2)         39,560        (40,517)
                                                     ------------    -----------

        Total stockholders' equity                      8,660,328      8,148,928
                                                     ------------    -----------

                                                     $ 85,519,756    $82,502,157
                                                     ============    ===========
</TABLE>



                     The accompanying notes are an integral
                       part of these financial statements.


                                      F-62
<PAGE>   322

                               LAKE COMMUNITY BANK

                               STATEMENT OF INCOME

              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995



<TABLE>
<CAPTION>
                                                  1997                   1996                 1995
                                               -----------           -----------          -----------
<S>                                            <C>                   <C>                  <C>
Interest income:
   Interest and fees on loans                  $ 5,528,769           $ 5,704,033          $ 5,794,178
   Interest on Federal funds sold                  203,474               167,901              229,678
   Interest on deposits in banks                   232,954               197,906              159,995
   Interest on investment securities:
      Taxable                                      510,919               608,705              530,660
      Exempt from Federal income
        taxes                                       84,094               168,841              288,114
                                               -----------           -----------          -----------

        Total interest income                    6,560,210             6,847,386            7,002,625

Interest expense on deposits (Note 6)            2,561,713             2,844,956            3,056,182
                                               -----------           -----------          -----------

        Net interest income                      3,998,497             4,002,430            3,946,443

Provision for loan losses (Note 3)                 263,000               477,000              210,000
                                               -----------           -----------          -----------

        Net interest income after
           provision for loan losses             3,735,497             3,525,430            3,736,443
                                               -----------           -----------          -----------

Non-interest income:
   Service charges and fees                        442,248               414,689              444,153
   Mortgage packaging fees                          32,899                54,226               73,954
   Gain on sale of loans                            15,699                92,121               40,563
   (Loss) gain on sale of investment
      securities, net (Note 2)                      (7,998)               19,681               40,206
   Other                                           146,734                97,599               82,342
                                               -----------           -----------          -----------

        Total non-interest income                  629,582               678,316              681,218
                                               -----------           -----------          -----------
</TABLE>


                                   (Continued)


                                      F-63
<PAGE>   323

                               LAKE COMMUNITY BANK

                               STATEMENT OF INCOME
                                   (Continued)
              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995



<TABLE>
<CAPTION>
                                                 1997                1996                1995
                                              ----------          ----------          ----------
<S>                                           <C>                 <C>                 <C>
Other expenses:
   Salaries and employee benefits
      (Notes 3 and 12)                        $1,616,974          $1,682,501          $1,688,760
   Occupancy                                     213,457             255,478             182,750
   Equipment                                     343,146             341,735             237,105
   Other (Note 11)                             1,048,232           1,244,747           1,193,265
                                              ----------          ----------          ----------

           Total other expenses                3,221,809           3,524,461           3,301,880
                                              ----------          ----------          ----------

           Income before income
             taxes                             1,143,270             679,285           1,115,781

Income taxes (Note 7)                            377,000             203,000             335,000
                                              ----------          ----------          ----------

           Net income                         $  766,270          $  476,285          $  780,781
                                              ==========          ==========          ==========

Basic earnings per share (Note 10)            $      .62          $      .38          $      .63
                                              ==========          ==========          ==========

Diluted earnings per share (Note 10)          $      .59          $      .36          $      .59
                                              ==========          ==========          ==========
</TABLE>



                     The accompanying notes are an integral
                       part of these financial statements.



                                      F-64
<PAGE>   324

                               LAKE COMMUNITY BANK

                        STATEMENT OF STOCKHOLDERS' EQUITY

              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995

<TABLE>
<CAPTION>
                                                                                          UNREALIZED
                                                                                        (LOSS) GAIN ON
                                                                                          AVAILABLE-
                                           COMMON STOCK                                    FOR-SALE
                                                                          RETAINED        INVESTMENT
                                      SHARES            AMOUNT            EARNINGS        SECURITIES          TOTAL
                                   -------------    ---------------   ---------------  ---------------   ---------------
<S>                                <C>              <C>               <C>              <C>               <C>
Balance,
    January 1, 1995                     1,238,846   $     3,168,253   $     4,250,376  $       (79,202)  $     7,339,427

Cash dividend $.20 per
    share                                                                    (248,009)                          (248,009)

Stock options exercised
    and related tax benefit
    (Note 10)                              1,200              7,039                                                7,039

Net income                                                                    780,781                            780,781

Net change in unrealized
    loss on available-for-
    sale investment securi-
    ties, net of taxes                                                                         186,837           186,837
                                   -------------    ---------------   ---------------  ---------------   ---------------

Balance,
    December 31, 1995                   1,240,046         3,175,292         4,783,148          107,635         8,066,075

Cash dividend $.20 per
    share                                                                    (248,109)                          (248,109)

Stock options exercised
    and related tax benefit
    (Note 10)                                500              2,829                                                2,829

Net income                                                                    476,285                            476,285

Net change in unrealized
    gain on available-for-
    sale investment securi-
    ties, net of taxes                                                                        (148,152)         (148,152)
                                   -------------    ---------------   ---------------  ---------------   ---------------

Balance,
    December 31, 1996                   1,240,546         3,178,121         5,011,324          (40,517)        8,148,928

Cash dividend $.27 per
    share                                                                    (334,947)                          (334,947)

Net income                                                                    766,270                            766,270

Net change in unrealized
    loss on available-for-
    sale investment securi-
    ties, net of taxes
    (Note 2)                                                                                    80,077            80,077
                                   -------------    ---------------   ---------------  ---------------   ---------------

Balance,
    December 31, 1997                   1,240,546   $     3,178,121   $     5,442,647  $        39,560   $     8,660,328
                                   ==============   ===============   ===============  ===============   ===============
</TABLE>



                     The accompanying notes are an integral
                       part of these financial statements.


                                      F-65
<PAGE>   325

                               LAKE COMMUNITY BANK

                             STATEMENT OF CASH FLOWS

              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
<CAPTION>
                                                               1997                 1996                  1995
                                                           -----------           -----------           -----------
<S>                                                        <C>                   <C>                   <C>
Cash flows from operating activities:
   Net income                                              $   766,270           $   476,285           $   780,781
   Adjustments to reconcile net
      income to net cash provided
      by operating activities:
        Depreciation, accretion and amortiza-
           tion, net                                           380,500               413,770               300,202
        Provision for loan losses                              263,000               477,000               210,000
        Net loss (gain) on sale of available-for-
           sale investment securities                            7,998               (19,681)              (40,206)
        Net (gain) loss on sale of other
           real estate                                         (15,910)              (12,202)                  888
        Provision for losses on other
           real estate                                         101,437               129,980                38,459
        Net (increase) decrease in loans
           held for sale                                      (391,368)                7,103               113,868
        Deferred loan origination fees and costs,
           net                                                 (71,172)             (109,109)              (39,632)
        Increase in accrued interest receivable
           and other assets                                   (325,131)              (39,236)              (54,962)
        (Decrease) increase in accrued
           interest payable and other liabilities              (82,179)             (469,141)              552,693
        Deferred taxes                                          62,000               103,000               (39,000)
                                                           -----------           -----------           -----------

             Net cash provided by operating
                activities                                     695,445               957,769             1,823,091
                                                           -----------           -----------           -----------
</TABLE>

                                   (Continued)


                                      F-66
<PAGE>   326

                               LAKE COMMUNITY BANK

                             STATEMENT OF CASH FLOWS
                                   (Continued)
              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
<CAPTION>
                                                                  1997                 1996                  1995
                                                           ------------------   ------------------    ------------------
<S>                                                        <C>                  <C>                   <C>
Cash flows from investing activities:
   Cash acquired in the assumption of
      certain liabilities of another bank                                                             $        4,778,000
   Proceeds from matured and called
      available-for-sale investment securities             $        1,000,000   $        3,445,000             1,940,000
   Proceeds from matured and called held-
      to-maturity investment securities                                                                        1,000,000
   Proceeds from the sale of available-
      for-sale investment securities                                2,003,719            7,910,477               474,600
   Purchases of available-for-sale
      investment securities                                        (3,857,150)          (5,560,566)           (7,000,687)
   Proceeds from principal repay-
      ments from available-for-sale
      mortgage-backed securities                                       63,123               61,551                 3,609
   Proceeds from principal repay-
      ments from held-to-maturity
      mortgage-backed securities                                                                                  40,709
   Net increase in interest-bearing
      deposits in banks                                              (200,000)            (991,000)             (993,000)
   Net (increase) decrease in loans                                (1,050,286)             195,219            (4,596,451)
   Proceeds from sale of other real estate                            841,170              265,965                37,527
   Acquisition of other real estate                                                       (143,654)             (149,632)
   Capitalized additions to other
      real estate                                                                                                (63,905)
   Additions to premises and equipment                                (55,673)            (183,642)             (593,279)
                                                           ------------------   ------------------    ------------------

           Net cash (used in) provided by
             investing activities                                  (1,255,097)           4,999,350            (5,122,509)
                                                           -------------------  ------------------    -------------------
</TABLE>


                                   (Continued)


                                      F-67

<PAGE>   327

                               LAKE COMMUNITY BANK

                             STATEMENT OF CASH FLOWS
                                   (Continued)
              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


<TABLE>
<CAPTION>
                                                                   1997                 1996                  1995
                                                            ------------------   ------------------    ------------------
<S>                                                         <C>                  <C>                   <C>
Cash flows from financing activities:
   Net (decrease) increase in demand,
      interest-bearing and savings
      deposits                                              $       (1,273,785)  $        1,620,069    $         (148,904)
   Net increase (decrease) in time
      deposits                                                       3,775,325           (9,675,837)           8,868,927
   Principal repayments on note payable                                                      (2,949)              (47,959)
   Cash dividends paid                                                (248,109)            (248,009)             (247,769)
   Proceeds from exercise of stock
      options                                                                                 2,188                 5,719
                                                            ------------------   ------------------    ------------------

           Net cash provided by (used in)
             financing activities                                    2,253,431           (8,304,538)           8,430,014
                                                            ------------------   -------------------   ------------------

           Increase (decrease) in cash and
             cash equivalents                                        1,693,779           (2,347,419)           5,130,596

Cash and cash equivalents at
   beginning of year                                                 7,542,415            9,889,834             4,759,238
                                                            ------------------   ------------------    ------------------

Cash and cash equivalents at
   end of year                                              $        9,236,194   $        7,542,415    $        9,889,834
                                                            ==================   ==================    ==================

Supplemental disclosure of cash flow information:

   Cash paid during the year for:

      Interest expense                                      $        2,692,072   $        3,273,028    $        2,499,932
      Income taxes                                          $          369,000   $          123,500    $          326,200

Non-cash investing activities:

   Real estate acquired through foreclosure                 $          225,618   $          588,757    $          407,857
   Net change in unrealized gain on
      available-for-sale investment securities              $          121,352   $          224,052    $          282,584

Non-cash financing activities:

   Dividends declared, $.27 per share
      in 1997 and $.20 per share in 1996
      and 1995                                              $          334,947   $          248,109    $          248,009
</TABLE>


                                   (Continued)


                                      F-68
<PAGE>   328

                               LAKE COMMUNITY BANK

                             STATEMENT OF CASH FLOWS
                                   (Continued)
              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995


Supplemental schedule concerning acquisition:

   On June 22, 1995, the Bank assumed certain liabilities of the Lakeport branch
   of U.S. Bank. The following assets and liabilities were recorded in
   connection with this transaction (Note 5):

<TABLE>
<S>                                                        <C>
Cash                                                       $4,778,000
Deposit base intangible                                        22,000
                                                           ----------

Deposits and accrued interest liabilities assumed          $4,800,000
                                                           ==========
</TABLE>

                     The accompanying notes are an integral
                       part of these financial statements.


                                      F-69
<PAGE>   329

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)



1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

           General
           -------
           The accounting and reporting policies of Lake Community Bank conform
           with generally accepted accounting principles and prevailing
           practices within the banking industry.

           Certain reclassifications have been made to prior years' balances to
           conform to classifications used in 1997.

           Investment Securities
           ---------------------
           Investments are classified into one of the following categories:

                     -         Available-for-sale securities, reported at fair
                               value, with unrealized gains and losses excluded
                               from earnings and reported, net of taxes, as a
                               separate component of stockholders' equity.

                     -         Held-to-maturity securities, which management has
                               the positive intent and ability to hold, reported
                               at amortized cost, adjusted for the accretion of
                               discounts and amortization of premiums.

           Management determines the appropriate classification of its
           investments at the time of purchase and may only change the
           classification in certain limited circumstances. All transfers
           between categories are accounted for at fair value.

           Gains or losses on the sale of investment securities are computed on
           the specific identification method. Interest earned on investment
           securities is reported in interest income, net of applicable
           adjustments for accretion of discounts and amortization of premiums.
           In addition, unrealized losses that are other than temporary are
           recognized in earnings for all investments.

           Loans
           -----
           Loans are stated at principal balances outstanding, except for loans
           transferred from loans held for sale which are carried at the lower
           of principal balance or market value at the date of transfer,
           adjusted for accretion of discounts. Interest is accrued daily based
           upon outstanding loan balances. However, when, in the opinion of
           management, loans are considered to be impaired and the future
           collectibility of interest and principal is in serious doubt, loans
           are placed on nonaccrual status and the accrual of interest income is
           suspended. Any interest accrued but unpaid is charged against income.
           Payments received are applied to reduce principal to the extent
           necessary to ensure collection. Subsequent payments on these loans,
           or payments received on nonaccrual loans for which the ultimate
           collectibility of principal is not in doubt, are applied first to
           earned but unpaid interest and then to principal.


                                      F-70
<PAGE>   330

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

           Loans (Continued)
           -----

           An impaired loan is measured based on the present value of expected
           future cash flows discounted at the loan's effective interest rate
           or, as a practical matter, at the loan's observable market price or
           the fair value of collateral if the loan is collateral dependent. A
           loan is considered impaired when, based on current information and
           events, it is probable that the Bank will be unable to collect all
           amounts due (including both principal and interest) in accordance
           with the contractual terms of the loan agreement.

           Loan origination fees, commitment fees, direct loan origination costs
           and purchased premiums and discounts on loans are deferred and
           recognized as an adjustment of yield, to be amortized to interest
           income over the contractual term of the loan. The unamortized balance
           of deferred fees and costs is reported as a component of net loans.

           Sales and Servicing of Government Guaranteed Loans
           --------------------------------------------------

           The Bank adopted Financial Accounting Standards Board Statement No.
           125 (SFAS 125), Accounting for Transfers and Servicing of Financial
           Assets and Extinguishments of Liabilities, on January 1, 1997. Under
           SFAS 125, sales of financial assets are recognized when the
           transferred assets are put beyond the reach of the transferor and its
           creditors, even in bankruptcy or receivership.

           Under SFAS 125, servicing rights acquired through 1) a purchase or 2)
           the origination of loans which are sold or securitized with servicing
           rights retained are recognized as separate assets or liabilities.
           Servicing assets or liabilities are recorded at the difference
           between the contractual servicing fees and adequate compensation for
           performing the servicing, and are subsequently amortized in
           proportion to and over the period of the related net servicing income
           or expense. Servicing rights acquired during the year ended
           December 31, 1997 were not considered material for disclosure
           purposes.

           In addition, assets (accounted for as interest-only (IO) strips) are
           recorded at the fair value of the difference between note rates and
           rates paid to purchasers (the interest spread) and contractual
           servicing fees, if applicable. IO strips are carried at fair value
           with gains or losses recorded as a component of stockholders' equity,
           similar to available-for-sale investment securities.

           Included in the portfolio are loans which are 75% to 90% guaranteed
           by the Small Business Administration (SBA) and Farmers Home
           Administration (FmHA). The guaranteed portion of these loans may be
           sold to a third party, with the Bank retaining the unguaranteed
           portion. The Bank generally receives a premium in excess of the
           adjusted carrying value of the loan at the time of sale. The Bank may
           be required to refund a portion of the sales premium if the borrower
           defaults or the loan prepays within ninety days of the settlement
           date. However, there were no sales of loans subject to these recourse
           provisions at December 31, 1997, 1996 and 1995.


                                      F-71
<PAGE>   331

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

           Sales and Servicing of Government Guaranteed Loans (Continued)
           --------------------------------------------------

           The Bank's investment in the loan is allocated between the retained
           portion of the loan, the servicing asset, the IO strip, and the sold
           portion of the loan based on their relative fair values on the date
           the loan is sold. The gain on the sold portion of the loan is
           recognized as income at the time of sale. The carrying value of the
           retained portion of the loan is discounted based on the estimated
           value of a comparable non-guaranteed loan. The servicing asset is
           amortized over the estimated life of the related loan. Significant
           future prepayments of these loans will result in the recognition of
           additional amortization of related servicing assets and an adjustment
           to the carrying value of related IO strips.

           The Bank serviced loans for others totaling $1,792,500 and $1,575,000
           as of December 31, 1997 and 1996, respectively.

           Allowance for Loan Losses
           -------------------------

           The allowance for loan losses is maintained to provide for losses
           related to impaired loans and other losses that can be expected to
           occur in the normal course of business. The determination of the
           allowance is based on estimates made by management, to include
           consideration of the character of the loan portfolio, specifically
           identified problem loans, potential losses inherent in the portfolio
           taken as a whole and economic conditions in the Bank's service area.
           These estimates are particularly susceptible to changes in the
           economic environment and market conditions. The allowance is
           established through a provision for loan losses which is charged to
           expense.

           Other Real Estate
           -----------------

           Other real estate includes real estate acquired in full or partial
           settlement of loan obligations and former Bank premises. When
           property is acquired in settlement of loan obligations, any excess of
           the Bank's recorded investment in the loan balance and accrued
           interest income over the estimated fair market value of the property
           is charged against the allowance for loan losses. A valuation
           allowance for losses on other real estate is maintained to provide
           for temporary declines in value. The allowance is established through
           a provision for losses on other real estate which is included in
           other expenses. Subsequent gains or losses on sales or writedowns
           resulting from permanent impairments are recorded in other income or
           expenses as incurred.

           Bank Premises and Equipment
           ---------------------------

           Bank premises and equipment are carried at cost. Depreciation is
           determined using the straight-line method over the estimated useful
           lives of the related assets. The useful lives of Bank premises are
           estimated to be forty years. The useful lives of furniture, fixtures
           and equipment are estimated to be two to ten years. Leasehold
           improvements are amortized over the life of the asset or the life of
           the related lease, whichever is shorter. When assets are sold or
           otherwise disposed of, the cost and related accumulated depreciation
           or amortization are removed from the accounts, and any resulting gain
           or loss is recognized in income for the period. The cost of
           maintenance and repairs is charged to expense as incurred.


                                      F-72
<PAGE>   332

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

           Income Taxes
           ------------

           Deferred tax assets and liabilities are recognized for the tax
           consequences of temporary differences between the financial statement
           and tax basis of existing assets and liabilities. On the balance
           sheet, net deferred tax assets are included in accrued interest
           receivable and other assets.

           Cash Equivalents
           ----------------

           For the purpose of the statement of cash flows, cash and due from
           banks and Federal funds sold are considered to be cash equivalents.
           Generally, Federal funds are sold for one day periods.

           Earnings Per Share
           ------------------

           In February 1997, the Financial Accounting Standards Board issued
           Statement No. 128, Earnings per Share, which established new
           standards for computing and presenting earnings per share (EPS). This
           Statement was adopted by the Bank for financial statements issued for
           the year ended December 31, 1997 and requires the restatement of all
           prior-period EPS data presented.

           Basic EPS, which excludes dilution, is computed by dividing income
           available to common stockholders by the weighted-average number of
           common shares outstanding for the period and replaces the
           presentation of primary EPS. Diluted EPS reflects the potential
           dilution that could occur if securities or other contracts to issue
           common stock, such as stock options, result in the issuance of common
           stock which shares in the earnings of the Bank. Diluted EPS is
           computed similarly to, and replaces the presentation of, fully
           diluted EPS. The treasury stock method has been applied to determine
           the dilutive effect of stock options in computing diluted EPS.

           Stock-Based Compensation
           ------------------------

           Stock options are accounted for under the intrinsic value method
           prescribed in Accounting Principles Board Opinion No. 25, Accounting
           for Stock Issued to Employees. Accordingly, compensation cost for
           stock options is measured as the excess, if any, of the quoted market
           price of the Bank's stock at the date of grant over the exercise
           price. However, if the fair value of stock-based compensation
           computed under a fair value based method, as prescribed in Statement
           of Financial Accounting Standards No. 123, Accounting for Stock-
           Based Compensation, is material to the financial statements,
           pro-forma net income and earnings per share are disclosed as if the
           fair value method had been applied.

           Use of Estimates
           ----------------

           The preparation of financial statements in conformity with generally
           accepted accounting principles requires management to make estimates
           and assumptions. These estimates and assumptions affect the reported
           amounts of assets and liabilities at the date of the financial
           statements and the reported amounts of revenues and expenses during
           the reporting period. Actual results could differ from these
           estimates.


                                      F-73
<PAGE>   333

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

2.         INVESTMENT SECURITIES

           The amortized cost and estimated market value of investment
           securities at December 31, 1997 and 1996 consisted of the following:

           Available-for-Sale:
           ------------------

<TABLE>
<CAPTION>
                                                                               1997
                                           ------------------------------------------------------------------------------
                                                                      Gross              Gross            Estimated
                                               Amortized           Unrealized         Unrealized            Market
                                                 Cost                 Gains              Losses             Value
                                           -----------------   ------------------  ------------------  ------------------
<S>                                        <C>                 <C>                 <C>                 <C>
           U.S. Government
               corporations and
               agencies                    $       7,539,313   $            3,728  $          (31,041) $        7,512,000
           Obligations of states
               and political sub-
               divisions                           3,135,646               87,977                (623)          3,223,000
           Corporate debt
               securities                            750,238                  931              (1,169)            750,000
           Bankers' Accept-
               ances                                 490,553                  447                                 491,000
                                           -----------------   ------------------  ------------------  ------------------

                                           $      11,915,750   $           93,083  $          (32,833) $       11,976,000
                                           =================   ==================  ==================  ==================
</TABLE>

           Net unrealized gains on available-for-sale investment securities
           totaling $60,250 were recorded net of $20,690 in tax liabilities as a
           separate component of stockholders' equity at December 31, 1997.
           Proceeds and gross realized gains and losses from the sale of
           available-for-sale investment securities for the year ended
           December 31, 1997 totaled $2,003,719, $879 and $8,877, respectively.

<TABLE>
<CAPTION>
                                                                               1996
                                           ------------------------------------------------------------------------------
                                                                      Gross              Gross            Estimated
                                               Amortized           Unrealized         Unrealized            Market
                                                 Cost                 Gains              Losses             Value
                                           -----------------   ------------------  ------------------  ------------------
<S>                                        <C>                 <C>                 <C>                 <C>
           U.S. Government
               corporations and
               agencies                    $       7,611,519   $            2,924  $         (102,443) $        7,512,000
           Obligations of states
               and political sub-
               divisions                           2,521,747               44,319              (6,066)          2,560,000
           Corporate debt
               securities                          1,003,836                  462                (298)          1,004,000
                                           -----------------   ------------------  -------------------  -----------------

                                           $      11,137,102   $           47,705  $         (108,807) $       11,076,000
                                           =================   ==================  =================== ==================
</TABLE>


                                      F-74

<PAGE>   334

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

2.         INVESTMENT SECURITIES (Continued)

           Available-for-Sale: (Continued)
           ------------------

           Net unrealized losses on available-for-sale investment securities
           totaling $61,102 were recorded net of $20,585 in tax benefits as a
           separate component of stockholders' equity at December 31, 1996.
           Proceeds and gross realized gains and losses from the sale of
           available-for-sale investment securities for the year ended
           December 31, 1996 totaled $7,910,477, $49,149 and $29,468,
           respectively. Proceeds and gross realized gains from the sale of
           available-for-sale investment securities for the year ended
           December 31, 1995 totaled $474,600 and $40,206, respectively.

           The amortized cost and estimated market value of investment
           securities at December 31, 1997 by contractual maturity are shown
           below. Expected maturities will differ from contractual maturities
           because the issuers of the securities may have the right to call or
           prepay obligations with or without call or prepayment penalties.

<TABLE>
<CAPTION>
                                                              Available-for-Sale
                                                       --------------------------------
                                                                             Estimated
                                                        Amortized             Market
                                                          Cost                 Value
                                                       -----------          -----------
<S>                                                    <C>                  <C>
           Within one year                             $ 1,490,553          $ 1,489,000
           After one year through five years             3,970,902            3,983,000
           After five years through ten years            6,080,784            6,085,000
           After ten years                                 373,511              419,000
                                                       -----------          -----------

                                                       $11,915,750          $11,976,000
                                                       ===========          ===========
</TABLE>

           Investment securities with amortized costs totaling $1,000,000 and
           estimated market values totaling $992,000 and $980,000 were pledged
           to secure treasury tax and loan accounts and public deposits at
           December 31, 1997 and 1996, respectively.

3.         LOANS

           Outstanding loans are summarized below:

<TABLE>
<CAPTION>
                                                         December 31,
                                               -----------------------------------
                                                  1997                    1996
                                               ------------           ------------
<S>                                            <C>                    <C>
           Commercial                          $  5,044,819           $  5,469,173
           Agricultural                          13,941,616              9,409,531
           Real estate - mortgage                32,002,981             33,885,271
           Real estate - construction               434,888              1,052,556
           Installment                            2,919,897              3,435,686
                                               ------------           ------------

                                                 54,344,201             53,252,217

           Deferred loan fees                      (182,293)              (253,465)
           Allowance for loan losses               (952,335)              (907,661)
                                               ------------           ------------

                                               $ 53,209,573           $ 52,091,091
                                               ============           ============
</TABLE>


                                      F-75
<PAGE>   335

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

3.         LOANS (Continued)

           Changes in the allowance for loan losses were as follows:

<TABLE>
<CAPTION>
                                                                  Year Ended December 31,
                                                    -------------------------------------------------------
                                                       1997                   1996                    1995
                                                    -----------           -----------           -----------
<S>                                                 <C>                   <C>                   <C>
           Balance, beginning of year               $   907,661           $ 1,127,587           $ 1,017,502
           Provision charged to operations              263,000               477,000               210,000
           Losses charged to allowance                 (256,712)             (738,522)             (147,035)
           Recoveries                                    38,386                41,596                47,120
                                                    -----------           -----------           -----------

                  Balance, end of year              $   952,335           $   907,661           $ 1,127,587
                                                    ===========           ===========           ===========
</TABLE>

           The recorded investment in loans that were considered to be impaired
           totaled $1,057,000 and $1,188,000 at December 31, 1997 and 1996,
           respectively. The related allowance for loan losses on these loans at
           December 31, 1997 and 1996 was $143,400 and $132,400, respectively.
           The average recorded investment in impaired loans for the years ended
           December 31, 1997, 1996 and 1995 was $1,038,500, $1,345,800 and
           $620,500, respectively. The Bank recognized $38,500, $52,700 and
           $8,400 in interest income on these loans during that same period, to
           include $38,500, $44,800 and $4,700 recognized using a cash-basis
           method.

           At December 31, 1997 and 1996, nonaccrual loans totaled $1,389,000
           and $1,425,000, respectively. Interest foregone on nonaccrual loans
           totaled $75,900, $103,300 and $62,700 for the years ended
           December 31, 1997, 1996 and 1995, respectively. There were no loans
           considered to be nonperforming, defined as loans ninety days or more
           past due and still accruing interest, for the years ended
           December 31, 1997 and 1996.

           Salaries and employee benefits totaling $130,622, $43,101 and $54,988
           have been deferred as loan origination costs during the years ended
           December 31, 1997, 1996 and 1995, respectively.

4.         BANK PREMISES AND EQUIPMENT

           Bank premises and equipment consisted of the following:

<TABLE>
<CAPTION>
                                                                   December 31,
                                                         ---------------------------------
                                                            1997                    1996
                                                         -----------           -----------
<S>                                                      <C>                   <C>
           Land                                          $   278,840           $   278,840
           Bank premises                                   2,168,640             2,168,640
           Furniture, fixtures and equipment               2,008,643             1,952,970
           Leasehold improvements                             90,974                90,974
                                                         -----------           -----------

                                                           4,547,097             4,491,424

                  Less accumulated depreciation
                      and amortization                    (1,469,846)           (1,187,394)
                                                         -----------           -----------

                                                         $ 3,077,251           $ 3,304,030
                                                         ===========           ===========
</TABLE>



                                      F-76
<PAGE>   336

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

4.         BANK PREMISES AND EQUIPMENT (Continued)

           Depreciation included in occupancy and equipment expense totaled
           $282,452, $283,044 and $193,573 for the years ended December 31,
           1997, 1996 and 1995, respectively.

5.         ACQUISITIONS

           On June 22, 1995, the Bank assumed certain liabilities of the
           Lakeport branch of U.S. Bank. The following assets and liabilities
           were recorded in connection with this transaction:

<TABLE>
<S>                                                      <C>
           Cash                                          $4,778,000
           Deposit base intangible                           22,000
                                                         ----------

                  Deposits and accrued interest
                      liabilities assumed                $4,800,000
                                                         ==========
</TABLE>

           The deposit base intangible and $13,300 in related capitalized legal
           expenses are being amortized over fifteen years.

           In addition, a deposit base intangible, covenant not to compete,
           goodwill and related capitalized legal expenses totaling $509,153
           were recorded in December 1991 in connection with the acquisition of
           certain assets and liabilities of the Lakeport office of Citizens
           Federal Bank. These intangible assets are being amortized over
           periods ranging from five to seven years. The covenant not to compete
           was fully amortized as of December 31, 1996.

           Amortization expense totaled $63,100, $92,277 and $86,210 for the
           years ended December 31, 1997, 1996 and 1995, respectively.

6.         INTEREST-BEARING DEPOSITS

           Interest-bearing deposits consisted of the following:

<TABLE>
<CAPTION>
                                                     December 31,
                                           --------------------------------
                                              1997                 1996
                                           -----------          -----------
<S>                                        <C>                  <C>
           Savings                         $12,027,671          $14,533,004
           Money market                      4,143,444            4,885,173
           Now accounts                      9,640,047           10,391,267
           Time, $100,000 or more            5,694,147            3,798,069
           Other time                       31,606,172           29,726,925
                                           -----------          -----------

                                           $63,111,481          $63,334,438
                                           ===========          ===========
</TABLE>



                                      F-77
<PAGE>   337

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

6.         INTEREST-BEARING DEPOSITS (Continued)

           Interest expense recognized on interest-bearing deposits consisted of
           the following:

<TABLE>
<CAPTION>
                                                        Year Ended December 31,
                                           --------------------------------------------------
                                              1997                1996                1995
                                           ----------          ----------          ----------
<S>                                        <C>                 <C>                 <C>
           Savings                         $  301,124          $  309,130          $  394,745
           Money market                       142,423             185,976             232,463
           Now accounts                       175,619             142,234             162,934
           Time, $100,000 or more             212,630             162,000             161,700
           Other time                       1,729,917           2,045,616           2,104,340
                                           ----------          ----------          ----------

                                           $2,561,713          $2,844,956          $3,056,182
                                           ==========          ==========          ==========
</TABLE>

7.         INCOME TAXES

           The provision for income taxes for the years ended December 31, 1997,
           1996 and 1995 consisted of the following:

<TABLE>
<CAPTION>
                                               Federal              State               Total
                                              ---------           ---------           ---------
<S>                                           <C>                 <C>                 <C>
           1997
           ----

           Current                            $ 208,000           $ 107,000           $ 315,000
           Deferred                              47,000              15,000              62,000
                                              ---------           ---------           ---------

                  Income tax expense          $ 255,000           $ 122,000           $ 377,000
                                              =========           =========           =========

           1996
           ----

           Current                            $  51,000           $  49,000           $ 100,000
           Deferred                              72,000              31,000             103,000
                                              ---------           ---------           ---------

                  Income tax expense          $ 123,000           $  80,000           $ 203,000
                                              =========           =========           =========

           1995
           ----

           Current                            $ 245,000           $ 129,000           $ 374,000
           Deferred                             (25,000)            (14,000)            (39,000)
                                              ---------           ---------           ---------

                  Income tax expense          $ 220,000           $ 115,000           $ 335,000
                                              =========           =========           =========
</TABLE>


                                      F-78
<PAGE>   338

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

7.         INCOME TAXES (Continued)

           Deferred tax assets (liabilities) are comprised of the following at
           December 31, 1997 and 1996:

<TABLE>
<CAPTION>
                                                                    1997                1996
                                                                  ---------           ---------
<S>                                                               <C>                 <C>
           Deferred tax assets:
               Allowance for loan losses                          $ 294,000           $ 277,000
               Deferred compensation                                 86,000              59,000
               Future benefit of state tax deduction                 34,000              14,000
               Future benefit of alternative minimum tax                                 41,000
               Other real estate                                     17,000              75,000
               Unrealized loss on available-for-sale
                  investment securities                                                  21,000
               Other                                                 10,000               3,000
                                                                  ---------           ---------

                      Total deferred tax assets                     441,000             490,000
                                                                  ---------           ---------

           Deferred tax liabilities:
               Bank premises and equipment                         (195,000)           (150,000)
               Unrealized gain on available-for-sale
                  investment securities                             (21,000)
               Other                                                (12,000)            (23,000)
                                                                  ---------           ---------

                      Total deferred tax liabilities               (228,000)           (173,000)
                                                                  ---------           ---------

                      Net deferred tax assets                     $ 213,000           $ 317,000
                                                                  =========           =========
</TABLE>

           The provision for income taxes differs from amounts computed by
           applying the statutory Federal income tax rates to operating income
           before income taxes. The significant items comprising these
           differences for the years ended December 31, 1997, 1996 and 1995
           consisted of the following:

<TABLE>
<CAPTION>
                                                   1997                     1996                     1995
                                            -------------------      -------------------      -------------------
                                            Amount       Rate %      Amount       Rate %      Amount       Rate %
                                            ------       ------      ------       ------      ------       ------
<S>                                        <C>           <C>        <C>           <C>        <C>           <C>
           Federal income tax
               expense, at statutory
               rate                        $ 388,712      34.0      $ 230,957      34.0      $ 379,366      34.0
           State franchise tax, net
               of Federal tax effect          74,484       6.5         45,886       6.8         80,314       7.2
           Tax exempt income
               from life insurance
               policies                      (38,150)     (3.3)       (24,720)     (3.6)       (16,261)     (1.5)
           Interest on obligations
               of states and political
               subdivisions                  (45,781)     (4.0)       (70,861)    (10.4)       (92,495)     (8.3)
           Other                              (2,265)      (.2)        21,738       3.2        (15,924)     (1.4)
                                           ---------      ----      ---------      ----      ---------      ----

                  Total income
                      tax expense          $ 377,000      33.0      $ 203,000      30.0      $ 335,000      30.0
                                           =========      ====      =========      ====      =========      ====
</TABLE>



                                      F-79
<PAGE>   339

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

8.         SHORT-TERM BORROWING ARRANGEMENT

           The Bank is eligible to borrow up to $2,000,000 on an overnight basis
           from its correspondent bank. There were no short-term borrowings
           outstanding at December 31, 1997 or 1996.

9.         COMMITMENTS AND CONTINGENCIES

           Leases
           ------

           The Bank leases land and two branch offices under noncancelable
           operating leases. Future minimum lease payments are as follows:

<TABLE>
<CAPTION>
                Year Ending
               December 31,
               ------------
<S>                                            <C>
                   1998                        $      68,500
                   1999                               52,000
                   2000                               52,000
                   2001                               18,667
                   2002                               12,000
                                               -------------

                                               $     203,167
                                               =============
</TABLE>

           Rental expense included in occupancy and other expenses totaled
           $52,049, $47,740 and $43,924 for the years ended December 31, 1997,
           1996 and 1995, respectively.

           Financial Instruments With Off-Balance-Sheet Risk
           -------------------------------------------------

           The Bank is a party to financial instruments with off-balance-sheet
           risk in the normal course of business in order to meet the financing
           needs of its customers and to reduce its own exposure to fluctuations
           in interest rates. These financial instruments include commitments to
           extend credit and letters of credit. These instruments involve, to
           varying degrees, elements of credit and interest rate risk in excess
           of the amount recognized on the balance sheet.

           The Bank's exposure to credit loss in the event of nonperformance by
           the other party for commitments to extend credit and letters of
           credit is represented by the contractual amount of those instruments.
           The Bank uses the same credit policies in making commitments and
           letters of credit as it does for loans included on the balance sheet.

           The following financial instruments represent off-balance-sheet
           credit risk:

<TABLE>
<CAPTION>
                                                   December 31,
                                            ---------------------------
                                               1997             1996
                                            -----------     -----------
<S>                                         <C>             <C>
           Commitments to extend credit     $15,106,000     $10,783,000
           Letters of credit                $   151,000     $   100,000
</TABLE>


                                      F-80
<PAGE>   340

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

9.         COMMITMENTS AND CONTINGENCIES (Continued)

           Financial Instruments With Off-Balance-Sheet Risk (Continued)
           -------------------------------------------------

           Commitments to extend credit are agreements to lend to a customer as
           long as there is no violation of any condition established in the
           contract. Commitments generally have fixed expiration dates or other
           termination clauses and may require payment of a fee. Since some of
           the commitments are expected to expire without being drawn upon, the
           total commitment amounts do not necessarily represent future cash
           requirements. The Bank evaluates each customer's creditworthiness on
           a case-by-case basis. The amount of collateral obtained, if deemed
           necessary by the Bank upon extension of credit, is based on
           management's credit evaluation of the borrower. Collateral held
           varies, but may include deposits, real estate, accounts receivable
           and personal property.

           Letters of credit are conditional commitments issued by the Bank to
           guarantee the performance or financial obligation of a customer to a
           third party. The credit risk involved in issuing letters of credit is
           essentially the same as that involved in extending loans to
           customers.

           Commercial loan commitments represent approximately 78% of total
           commitments and are generally unsecured or secured by collateral
           other than real estate. Real estate loan commitments represent 10% of
           total commitments and are generally secured by property with a
           loan-to-value ratio not to exceed 80%. Consumer loan commitments
           represent the remaining 12% of total commitments and are generally
           unsecured. In addition, the majority of the Bank's loan commitments
           have variable interest rates.

           Significant Concentrations of Credit Risk
           -----------------------------------------

           The Bank's business activity is primarily with customers located
           within Lake County. The Bank's operating policy since its inception
           has emphasized serving the banking needs of individuals, business and
           professional communities and agribusiness in Lakeport, California and
           its surrounding area. The Bank grants real estate, commercial and
           installment loans to these customers. Although the Bank has a
           diversified loan portfolio, a significant portion of its customers'
           ability to repay their loans is dependent upon commercial and
           residential real estate development, agribusiness and the resort and
           recreational economic sectors.

           Correspondent Banking Agreements
           --------------------------------

           The Bank maintains funds on deposit with other federally insured
           financial institutions under correspondent banking agreements.
           Uninsured deposits totaled $4,331,837 at December 31, 1997.

10.        STOCKHOLDERS' EQUITY

           Dividends
           ---------

           Upon declaration by the Board of Directors, all stockholders of
           record will be entitled to receive dividends. The California
           Financial Code restricts the total dividend payment of any bank in
           any calendar year to the lesser of (1) the bank's retained earnings
           or (2) the bank's net income for its last three fiscal years, less
           distributions made to stockholders during the same three-year period.
           At December 31, 1997, retained earnings of $1,192,271 were free of
           such restrictions.


                                      F-81
<PAGE>   341

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

10.        STOCKHOLDERS' EQUITY (Continued)

           Earnings Per Share
           ------------------
           A reconciliation of the numerators and denominators of the basic and
           diluted earnings per share computations is as follows:

<TABLE>
<CAPTION>
                                                                                   Weighted
                                                                                    Average
                                                                                   Number of
                                                                      Net            Shares         Per Share
                         For the Year Ended                         Income        Outstanding        Amount
           ---------------------------------------------          ---------       -----------       ---------
<S>                                                               <C>             <C>             <C>
           December 31, 1997
           -----------------
           Basic earnings per share                               $ 766,270        1,240,546          $  .62
                                                                                                      ======
           Effect of dilutive stock options                                           57,408
                                                                  ---------       ----------
           Diluted earnings per share                             $ 766,270        1,297,954          $  .59
                                                                  =========       ==========          ======
           December 31, 1996
           -----------------
           Basic earnings per share                               $ 476,285        1,240,491          $  .38
                                                                                                      ======
           Effect of dilutive stock options                                           68,267
                                                                  ---------       ----------
           Diluted earnings per share                             $ 476,285        1,308,758          $  .36
                                                                  =========       ==========          ======
           December 31, 1995
           -----------------
           Basic earnings per share                               $ 780,781        1,239,791          $  .63
                                                                                                      ======
           Effect of dilutive stock options                                           75,519
                                                                  ---------       ----------
           Diluted earnings per share                             $ 780,781        1,315,310          $  .59
                                                                  =========       ==========          ======
</TABLE>

           Options to purchase 25,350 shares of common stock at a weighted
           average price of $9.70 per share were outstanding during 1997, 1996
           and 1995 but were not included in the computation of earnings per
           share because the exercise price of the options was greater than the
           average market price of the common shares during those years.


                                      F-82
<PAGE>   342

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

10.        STOCKHOLDERS' EQUITY (Continued)

           Stock Options
           -------------
           The Bank's 1984 Stock Option Plan was amended in 1989 to authorize
           the grant of options to non-employee directors and again in 1990 to
           increase the number of shares reserved under the plan to 340,062
           shares of authorized but unissued common stock. Of the shares
           reserved, 200,000 shares were available for grant to non-employee
           directors. Options were granted to non-employee directors based on
           consecutive years of service to a maximum of 20,000 shares each. The
           plan requires that the option price may not be less than the fair
           market value at the date the option is granted, and that the stock
           must be paid in full at the time the option is exercised. The options
           expire on dates determined by the Board of Directors, but not later
           than ten years from the grant date. Options generally vest ratably
           over a four to five year period.

           The plan terminated in November 1994 and no additional options will
           be granted. However, the vesting schedule and ability to exercise
           options currently granted were not effected.

           A summary of the activity within the plan follows:

<TABLE>
<CAPTION>
                                                 1997                        1996                            1995
                                    ---------------------------      ------------------------        ----------------------
                                                       Weighted                      Weighted                     Weighted
                                                       Average                        Average                      Average
                                                       Exercise                      Exercise                     Exercise
                                        Shares           Price         Shares          Price         Shares         Price
                                    -------------      --------      -----------     --------        --------     ---------
<S>                                 <C>                <C>          <C>                <C>          <C>           <C>
           Options outstanding,
                beginning of year         220,850      $ 5.50            238,900      $  5.41         240,100       $ 5.41

                Options exercised                                           (500)     $  4.38          (1,200)      $ 4.77
                Options canceled          (15,250)     $ 4.38            (17,550)     $  4.38
                                    -------------                    -----------                     --------

           Options outstanding,
                end of year               205,600      $ 5.58            220,850      $  5.50         238,900       $ 5.41
                                    =============                    ===========                     ========

           Options exercisable,
                end of year               204,975      $ 5.57            215,138      $  5.39         226,850       $ 5.19
                                    =============                    ===========                     ========
</TABLE>

           A summary of options outstanding at December 31, 1997 follows:

<TABLE>
<CAPTION>
                                                    Number of          Weighted             Number of
                                                     Options            Average              Options
                                                   Outstanding         Remaining           Exercisable
              Range of                             December 31,       Contractual          December 31,
           Exercise Prices                            1997                Life                 1997
           ---------------                     ------------------  ------------------   ------------------
<S>                                            <C>                 <C>                  <C>
              $ 4.38                                  120,000         1   year                 120,000
              $ 6.25                                   60,250         2   years                 60,250
              $ 9.75                                   22,850         5   years                 22,850
              $ 9.25                                    2,500         6   years                  1,875
                                               ------------------                       ------------------
                                                      205,600                                  204,975
                                               ==================                       ==================
</TABLE>

                                      F-83
<PAGE>   343

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

10.        STOCKHOLDERS' EQUITY (Continued)

           Regulatory Capital
           ------------------
           The Bank is subject to certain regulatory capital requirements
           administered by the Federal Deposit Insurance Corporation (FDIC).
           Failure to meet these minimum capital requirements can initiate
           certain mandatory, and possibly additional discretionary, actions by
           regulators that, if undertaken, could have a direct material effect
           on the Bank's financial statements. Under capital adequacy guidelines
           and the regulatory framework for prompt corrective action, the Bank
           must meet specific capital guidelines that involve quantitative
           measures of the Bank's assets, liabilities and certain
           off-balance-sheet items as calculated under regulatory accounting
           practices. The Bank's capital amounts and classification are also
           subject to qualitative judgments by the regulators about components,
           risk weightings and other factors.

           Quantitative measures established by regulation to ensure capital
           adequacy require the Bank to maintain minimum amounts and ratios of
           total and Tier I capital to risk-weighted assets and of Tier I
           capital to average assets. Each of these components is defined in the
           regulations. Management believes that the Bank meets all its capital
           adequacy requirements as of December 31, 1997.

           In addition, the most recent notification from the FDIC as of
           December 31, 1997 and 1996 categorized the Bank as well capitalized
           under the regulatory framework for prompt corrective action. To be
           categorized as well capitalized, the Bank must maintain minimum total
           risk-based, Tier I risk-based and Tier I leverage ratios as set forth
           below. There are no conditions or events since that notification that
           management believes have changed the Bank's category.

<TABLE>
<CAPTION>
                                                             1997                  1996                    1995
                                                   --------------------     -------------------     -------------------
                                                     Amount      Ratio        Amount     Ratio        Amount      Ratio
                                                   ----------    ------     ----------   ------     ----------    -----
<S>                                                <C>            <C>       <C>           <C>       <C>           <C>
           Leverage Ratio
           --------------
           Lake Community Bank                     $8,561,600     10.4%     $8,067,300     9.3%     $7,743,900     9.3%

           Minimum requirement for "Well-
                Capitalized" institution           $4,124,100      5.0%     $4,321,200     5.0%     $4,163,000     5.0%
           Minimum regulatory requirement          $3,299,300      4.0%     $3,457,000     4.0%     $3,330,400     4.0%

           Tier I Risk-Based Capital Ratio
           -------------------------------
           Lake Community Bank                     $8,561,600     14.5%     $8,067,200    13.3%     $7,743,900    12.9%

           Minimum requirement for "Well-
                Capitalized" institution           $3,544,400      6.0%     $3,645,700     6.0%     $3,601,100     6.0%
           Minimum regulatory requirement          $2,362,900      4.0%     $2,430,500     4.0%     $2,400,700     4.0%

           Total Risk-Based Capital Ratio
           ------------------------------
           Lake Community Bank                     $9,300,000     15.8%     $8,788,000    14.5%     $8,505,000    14.3%

           Minimum requirement for "Well-
                Capitalized" institution           $5,885,900     10.0%     $6,061,400    10.0%     $5,965,200    10.0%
           Minimum regulatory requirement          $4,708,700      8.0%     $4,849,100     8.0%     $4,772,200     8.0%
</TABLE>



                                      F-84
<PAGE>   344

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

11.        OTHER EXPENSES

           Other expenses consisted of the following:

<TABLE>
<CAPTION>
                                                              Year Ended December 31,
                                                    ----------------------------------------
                                                       1997           1996          1995
                                                    ----------     ----------     ----------
<S>                                                 <C>            <C>            <C>
           Regulatory assessments                   $   28,950     $   25,328     $  102,833
           Advertising and promotion                   107,420        109,964         98,044
           Professional fees and legal expenses        146,420        219,652        144,930
           Stationery and supplies                      67,771         98,270         88,727
           Amortization of intangibles                  63,100         92,277         86,210
           Other real estate expenses                  209,552        222,956        200,859
           Other                                       425,019        476,300        471,662
                                                    ----------     ----------     ----------

                                                    $1,048,232     $1,244,747     $1,193,265
                                                    ==========     ==========     ==========
</TABLE>

12.        EMPLOYEE BENEFIT PLANS

           Employee Retirement Plan
           ------------------------
           On December 19, 1991, the Board of Directors adopted a 401(k)
           Retirement Plan, effective January 1, 1992. All employees 18 years of
           age or older with one year of service and who worked at least 1,000
           hours during the year are eligible to participate in the plan.
           Eligible employees may elect to make tax deferred contributions of up
           to seventeen percent of their annual salary, to the maximum allowed
           by law. The Bank may make additional nonelective contributions to the
           plan at the discretion of the Board of Directors. Bank contributions
           vest after three years of service. Bank contributions to the plan for
           the years ended December 31, 1997, 1996 and 1995 totaled $26,290,
           $15,298 and $20,048, respectively.

           Salary Continuation Plan
           ------------------------
           During 1992, the Board of Directors approved a salary continuation
           plan for key executives. Under this plan, the Bank is obligated to
           provide the executives, or their designated beneficiaries, with
           annual benefits for fifteen years after retirement or death. These
           benefits are substantially equivalent to those available under
           insurance policies purchased by the Bank on the lives of the
           executives. In addition, the estimated present value of these future
           benefits are accrued over the period from the effective date of the
           plan until each of the executive's expected retirement date. The
           expense under this plan for the year ended December 31, 1997, 1996
           and 1995 totaled $58,700, $34,400 and $30,100, respectively.

           In connection with the plan, the Bank has purchased life insurance
           policies with cash surrender values totaling $413,100 and $314,800 at
           December 31, 1997 and 1996, respectively.



                                      F-85
<PAGE>   345

                               LAKE COMMUNITY BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)
13.        RELATED PARTY TRANSACTIONS

           During the normal course of business, the Bank enters into
           transactions with related parties, including directors and executive
           officers. These transactions are on substantially the same terms and
           conditions as those prevailing for comparable transactions with
           unrelated parties.

           The following is a summary of the aggregate activity involving
           related party borrowers during 1997:

<TABLE>
<S>                                               <C>
           Balance, January 1, 1997               $ 609,000

               Disbursements                        565,000
               Amounts repaid                      (322,000)
                                                  ---------

           Balance, December 31, 1997             $ 852,000
                                                  =========
           Undisbursed commitments to related
               parties, December 31, 1997         $ 576,000
                                                  =========
</TABLE>


                                      F-86
<PAGE>   346
                 ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                           CONSOLIDATED BALANCE SHEET
                                   (UNAUDITED)

<TABLE>
<CAPTION>
                                                      SEPTEMBER 30,    DECEMBER 31,
                                                          1998            1997
                                                      -----------      ------------
<S>                                                   <C>              <C>
                                     ASSETS
Cash and due from banks                               $ 4,251,458      $ 1,830,279
Federal funds sold                                     10,050,000        6,720,000
Loans held for sale                                       305,252          227,150
Available-for-sale investment securities (Note 3)       4,217,700        4,010,300
Loans and leases, less allowance for loan and
   lease losses of $295,468 in 1998 and $723,880
   in 1997 (Note 4)                                    30,796,419       34,125,423
Bank premises and equipment, net                        1,645,963        1,720,231
Accrued interest receivable and other assets            2,104,258        1,954,293
                                                      -----------      -----------
                                                      $53,371,050      $50,587,676
                                                      ===========      ===========

                      LIABILITIES AND STOCKHOLDERS' EQUITY

Deposits:
   Non-interest bearing                               $10,879,585      $ 8,526,329
   Interest bearing (Note 5)                           37,596,488       37,823,066
                                                      -----------      -----------
           Total deposits                              48,476,073       46,349,395

Accrued interest payable and other liabilities            191,370          273,782
                                                      -----------      -----------
           Total liabilities                           48,667,443       46,623,177
                                                      -----------      -----------

Stockholders' equity:
   Common stock - no par value,
      5,000,000 shares authorized; issued and
      outstanding - 370,805 shares in 1998 and
      319,972 shares in 1997                            2,511,057        2,021,434
   Retained earnings since December 31, 1990
      when deficit of $1,729,001 was transferred
      to common stock as part of a
      quasi-reorganization                              2,173,559        1,931,885
   Accumulated other comprehensive income
      (Notes 3 and 7)                                      18,991           11,180
                                                      -----------      -----------
           Total stockholders' equity                   4,703,607        3,964,499
                                                      -----------      -----------
                                                      $53,371,050      $50,587,676
                                                      ===========      ===========
</TABLE>

   The accompanying notes are an integral part of these financial statements.


                                      F-87


<PAGE>   347

                 ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                        CONSOLIDATED STATEMENT OF INCOME
                                   (UNAUDITED)

                  NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1997

<TABLE>
<CAPTION>
                                                     1998            1997
                                                 -----------     -----------
<S>                                               <C>             <C>
Interest income:
   Interest and fees on loans and leases          $2,524,043      $2,431,619
   Interest on investment securities:
      Taxable                                        174,082         202,408
   Interest on Federal funds sold                    292,057         209,620
                                                  ----------      ----------
         Total interest income                     2,990,182       2,843,647
                                                  ----------      ----------
Interest expense:
   Interest on deposits (Note 5)                   1,303,715       1,197,629
                                                  ----------      ----------
         Net interest income                       1,686,467       1,646,018

Provision for loan and lease losses
   (Note 4)                                          105,000         126,000
                                                  ----------      ----------
         Net interest income after provision
           for loan and lease losses               1,581,467       1,520,018
                                                  ----------      ----------
Non-interest income:
   Service charges and fees                           50,446          40,871
   Gain on sale of loans                             187,384          57,310
   Other                                             177,330         122,191
                                                  ----------      ----------
         Total non-interest income                   415,160         220,372
                                                  ----------      ----------
</TABLE>


                                  (Continued)


                                      F-88

<PAGE>   348

                 ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                        CONSOLIDATED STATEMENT OF INCOME
                                   (UNAUDITED)
                                   (Continued)
                  NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1997

<TABLE>
<CAPTION>
                                            1998            1997
                                         -----------     ----------
<S>                                      <C>             <C>
Other expenses:
   Salaries and employee benefits        $  756,659      $  604,445
   Occupancy                                104,792          78,754
   Equipment                                 97,872          68,734
   Professional fees                        186,593          82,932
   Other                                    448,169         340,551
                                         ----------      ----------
         Total other expenses             1,594,085       1,175,416
                                         ----------      ----------

         Income before income taxes         402,542         564,974

Income taxes                                160,868         226,230
                                         ----------      ----------
         Net income                      $  241,674      $  338,744
                                         ==========      ==========
Basic earnings per share                 $      .75           $1,06
                                         ==========      ==========
Diluted earnings per share               $      .72      $     1.04
                                         ==========      ==========
</TABLE>

   The accompanying notes are an integral part of these financial statements.


                                      F-89

<PAGE>   349

                 ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                 CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY
                                   (UNAUDITED)

      NINE MONTHS ENDED SEPTEMBER 30, 1998 AND YEAR ENDED DECEMBER 31, 1997

<TABLE>
<CAPTION>
                                                                                           ACCUMU-
                                                                                        LATED OTHER
                                             COMMON STOCK                                 COMPRE-
                                         -----------------------         RETAINED         HENSIVE
                                         SHARES         AMOUNT           EARNINGS         INCOME          TOTAL
                                         -------      ----------        ----------      -----------     ----------
<S>                                      <C>          <C>               <C>               <C>           <C>
Balance, January 1, 1997                 319,972      $2,021,434        $1,750,166        $ 3,439       $3,775,039

Net income                                                                 181,719                         181,719

Net change in unrealized
  gain on available-for-sale
  investment securities,
  net of taxes                                                                              7,741            7,741
                                         -------      ----------        ----------        -------       ----------
  Balance, December 31, 1997             319,972       2,021,434         1,931,885         11,180        3,964,499

Net Income                                                                 241,674                         241,674

Stock options exercised and related
  tax benefit                             50,833         489,623                                           489,623

Net change in unrealized
  gain on available-for-sale
  investment securities,
  net of taxes (Notes 3 and 7)                                                              7,811            7,811
                                         -------      ----------        ----------        -------       ----------
  Balance, September 30, 1998            370,805      $2,511,057        $2,173,559        $18,991       $4,703,607
                                         =======      ==========        ==========        =======       ==========
</TABLE>

                   The accompanying notes are an integral part
                         of these financial statements.

                                      F-90

<PAGE>   350

                 ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                      CONSOLIDATED STATEMENT OF CASH FLOWS
                                   (UNAUDITED)

                  NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1997

<TABLE>
<CAPTION>
                                                               1998        1997
                                                          -----------   -----------
<S>                                                       <C>           <C>
Cash flows from operating activities:
   Net income                                             $   241,674   $   338,744
   Adjustments to reconcile net income to net cash
      provided by operating activities:
      Provision for loan and lease losses                     105,000       126,000
      Depreciation and amortization                            94,928        54,905
      Increase in deferred loan origination fees
         and costs, net                                       (10,332)      (37,225)
      Increase in loans held for sale                         (78,103)     (294,175)
      Decrease (increase) in accrued interest
         receivable and other assets                           48,735      (128,352)
      (Decrease) increase in accrued interest payable
         and other liabilities                                (82,624)       79,172
      Deferred taxes                                          (89,359)       19,000
                                                          -----------   -----------
           Net cash provided by operating activities          229,919       158,069
                                                          -----------   -----------
Cash flows from investing activities:
   Proceeds from matured held-to-maturity investment
      securities                                                            300,000
   Proceeds from sale or calls of available-for-sale
      investment securities                                 2,000,000
   Proceeds from matured available for sale investment
      securities                                            1,000,000
   Purchases of available-for-sale investment securities   (3,185,832)      (18,000)
   Net decrease (increase) in loans and leases              3,229,609    (4,682,455)
   Additions to bank premises and equipment                   (30,387)     (347,419)
                                                          -----------   -----------
           Net cash provided by (used in)
              investing activities                          3,013,390    (4,747,874)
                                                          -----------   -----------
</TABLE>

                                  (Continued)

                                      F-91

<PAGE>   351

                 ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                      CONSOLIDATED STATEMENT OF CASH FLOWS
                                   (UNAUDITED)
                                   (Continued)
                  NINE MONTHS ENDED SEPTEMBER 30, 1998 AND 1997

<TABLE>
<CAPTION>
                                                              1998           1997
                                                          ------------   ------------
<S>                                                       <C>            <C>
Cash flows from financing activities:
   Net increase in demand, interest-bearing
      and savings deposits                                $  2,813,873   $  3,896,297
   Net (decrease) increase in time deposits                   (687,251)     4,954,577
   Proceeds from exercise of stock options                     381,248
                                                          ------------   ------------
           Net cash provided by financing activities         2,507,870      8,850,874
                                                          ------------   ------------
           Increase in cash and cash equivalents             5,751,179      4,261,069

Cash and cash equivalents at beginning of year               8,550,279      5,232,288
                                                          ------------   ------------
Cash and cash equivalents at end of period                $ 14,301,458   $  9,493,357
                                                          ============   ============

Supplemental disclosure of cash flow information:

   Cash paid during the year for:
      Interest expense                                    $  1,230,364   $  1,120,786
      Income taxes                                        $    239,636   $    162,500

Non-cash investing activities:
   Real estate acquired through foreclosure               $    117,500
   Change in unrealized gain on available-
      for-sale investment securities                      $     11,841   $     11,125
</TABLE>

   The accompanying notes are an integral part of these financial statements.


                                      F-92

<PAGE>   352

                 ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)


1.      BASIS OF PRESENTATION

        The accompanying unaudited consolidated financial statements have been
        prepared in a condensed format and, therefore, do not include all of the
        information and footnotes required by generally accepted accounting
        principles for complete financial statements. However, in the opinion of
        management, all adjustments, consisting only of normal recurring
        adjustments, considered necessary for a fair presentation have been
        reflected in the financial statements. The results of operations for the
        nine months ended September 30, 1998 are not necessarily indicative of
        the results to be expected for the full year. Certain reclassifications
        have been made to prior period amounts to present them on a basis
        consistent with classifications for the nine months ended September 30,
        1998.

2.      FORMATION OF HOLDING COMPANY

        On March 10, 1998, Roseville 1st Community Bancorp assumed 100%
        ownership of Roseville 1st National Bank. On the same date, formal
        approval as a bank holding company was received from the Federal
        Reserve.

3.      INVESTMENT SECURITIES

        All investment securities were classified as available for sale as of
        September 30, 1998 and December 31, 1997.

        The amortized cost and estimated market value of investment securities
        at September 30, 1998 and December 31, 1997 consisted of the following:

<TABLE>
<CAPTION>
                                                           1998
                             --------------------------------------------------------------
                                                   Gross           Gross         Estimated
                                Amortized       Unrealized      Unrealized        Market
                                  Cost             Gains          Losses           Value
                               ----------       ----------      -----------      ----------
<S>                            <C>                <C>            <C>             <C>
        U.S. Government
          agencies             $3,706,422         $25,678                        $3,732,100
        Municipal Bonds           190,221           3,079                           193,300
        Federal Reserve
          Bank stock               60,700                                            60,700
        Federal Home Loan
          Bank stock              156,600                                           156,600
        Pacific Coast Bankers
          Bank stock               75,000                                            75,000
                               ----------         -------        ----------      ----------
                               $4,188,943         $28,757        $     --        $4,217,700
                               ==========         =======        ==========      ==========
</TABLE>

        Net unrealized gains on available-for-sale investment securities
        totaling $28,757 were recorded net of $9,766 in tax benefits as a
        separate component of stockholders' equity at September 30, 1998. There
        were no sales of available-for-sale investment securities for the nine
        months ended September 30, 1998.


                                      F-93

<PAGE>   353

                 ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)
                                   (Continued)

3.      INVESTMENT SECURITIES (Continued)

<TABLE>
<CAPTION>
                                                           1997
                               ------------------------------------------------------------
                                                   Gross           Gross         Estimated
                                Amortized       Unrealized      Unrealized        Market
                                  Cost             Gains          Losses           Value
                               ----------       ----------      -----------      ----------
<S>                            <C>                <C>            <C>             <C>
        U.S. Government
          agencies             $3,737,984        $16,916                         $3,754,900
        Federal Reserve
          Bank stock               60,700                                            60,700
        Federal Home Loan
          Bank stock              119,700                                           119,700
        Pacific Coast Bankers
          Bank stock               75,000                                            75,000
                               ----------        -------          -------        ----------
                               $3,993,384        $16,916          $    --        $4,010,300
                               ==========        =======          =======        ==========
</TABLE>

        Net unrealized gains on available-for-sale investment securities
        totaling $16,916 were recorded net of $5,736 in tax liabilities as a
        separate component of stockholders' equity. There were no sales of
        available-for-sale investment securities for the nine months ended
        September 30, 1997.

        The amortized cost and estimated market value of available-for-sale
        investment securities at September 30, 1998 by contractual maturity are
        shown below. Expected maturities will differ from contractual maturities
        because the issuers of the securities may have the right to call or
        prepay obligations with or without call or prepayment penalties.

<TABLE>
<CAPTION>
                                                                              Estimated
                                                              Amortized         Market
                                                                  Cost          Value
                                                              ----------      ----------
<S>                                                           <C>             <C>
        Within one year                                       $  498,594      $  500,545
        After one year through five years                      2,247,828       2,268,500
        After five years through ten years                       960,000         963,075
        After ten years                                          190,221         193,280
                                                              ----------      ----------
                                                               3,896,643       3,925,400

        Investment securities not due at a single
          maturity date:
          Federal Reserve Bank stock                              60,700          60,700
          Federal Home Loan Bank stock                           156,600         156,600
          Pacific Coast Bankers Bank stock                        75,000          75,000
                                                              ----------      ----------
                                                              $4,188,943      $4,217,700
                                                              ==========      ==========
</TABLE>

        Investment securities with amortized costs totaling $1,496,701 and
        $1,490,500 and market values totaling $1,511,875 and $1,500,200 were
        pledged to secure deposits at September 30, 1998 and December 31, 1997,
        respectively.


                                      F-94

<PAGE>   354

                ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)
                                   (Continued)

4.      LOANS AND LEASES

        Outstanding loans and leases are summarized below:

<TABLE>
<CAPTION>
                                                September 30,     December 31,
                                                    1998             1997
                                                -------------     -----------
<S>                                              <C>              <C>
        Commercial                               $ 6,693,625      $ 8,714,911
        Real estate-mortgage                       4,438,956        5,498,941
        Real estate-commercial                    10,886,614       10,780,097
        Real estate-construction                   6,965,446        7,319,151
        Installment                                2,183,676        2,622,966
                                                 -----------      -----------
                                                  31,168,317       34,936,066

        Deferred loan and lease fees, net            (76,430)         (86,763)
        Allowance for loan and lease losses         (295,468)        (723,880)
                                                 -----------      -----------
                                                 $30,796,419      $34,125,423
                                                 ===========      ===========
</TABLE>

        Changes in the allowance for loan and lease losses were as follows:

<TABLE>
<CAPTION>
                                            September 30,  September 30, December 31,
                                               1998           1997           1997
                                            -----------    ------------  ------------
<S>                                          <C>            <C>           <C>
        Balance, beginning of year           $ 723,880      $ 253,560     $ 253,560
        Provision charged to operations        105,000        126,000       564,000
        Losses charged to allowance           (540,228)       (95,025)     (100,910)
        Recoveries                               6,816          6,163         7,230
                                             ---------      ---------     ---------
                                             $ 295,468      $ 290,698     $ 723,880
                                             =========      =========     =========
</TABLE>

        The recorded investment in loans that were considered to be impaired
        totaled $75,794 and $550,000 at September 30, 1998 and December 31,
        1997, respectively. The related allowance for loan losses for these
        loans at September 30, 1998 and December 31, 1997 was $25,672 and
        $400,000, respectively. The average recorded investment in impaired
        loans for the nine month period ended September 30, 1998 and the year
        ended December 31, 1997 was $223,359 and $152,547, respectively. The
        Bank recognized $7,059 in interest income on impaired loans during the
        nine month period ended September 30, 1998. There was one impaired loan
        at September 30, 1997 with a balance due of $22,484.

        At September 30, 1998 and December 31,1997, there were no nonaccrual
        loans. Interest foregone on nonaccrual loans for the nine month periods
        ended September 30, 1998 and 1997 was considered insignificant.

        Salaries and employee benefits totaling $190,502 and $169,050 have been
        deferred as loan origination costs during the nine month periods ended
        September 30, 1998 and 1997, respectively.

                                      F-95

<PAGE>   355

                ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)
                                   (Continued)

5.      INTEREST-BEARING DEPOSITS

        Interest-bearing deposits consisted of the following:

<TABLE>
<CAPTION>
                                      September 30,     December 31,
                                          1998             1997
                                      ------------      ------------
<S>                                    <C>              <C>
        Savings                        $ 1,003,678      $   924,218
        NOW accounts                     3,859,199        2,814,604
        Money market                    12,799,713       13,313,222
        Time, $100,000 or more           6,558,634        6,525,188
        Other time                      13,375,264       14,245,834
                                       -----------      -----------
                                       $37,596,488      $37,823,066
                                       ===========      ===========
</TABLE>

        Interest expense recognized on interest-bearing deposits consisted of
the following:

<TABLE>
<CAPTION>
                                                 Nine Month Periods Ended
                                                       September 30,
                                                 ----------------------
                                                    1998         1997
                                                 ----------   ---------
<S>                                              <C>          <C>
        Savings                                  $   23,033   $   18,477
        Now Accounts                                 45,776       41,823
        Money Market                                390,863      425,349
        Time, $100,000 or more                      279,686      218,871
        Other time                                  564,357      493,109
                                                 ----------   ----------
                                                 $1,303,715   $1,197,629
                                                 ==========   ==========
</TABLE>


                                      F-96

<PAGE>   356

                ROSEVILLE 1ST COMMUNITY BANCORP AND SUBSIDIARY

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
                                   (UNAUDITED)
                                   (Continued)

6.      EARNINGS PER SHARE

        A reconciliation of the numerator and denominators of the basic and
        diluted earnings per share computations is as follows:

<TABLE>
<CAPTION>
                                                           Weighted
                                                            Average
                                                            Number
                                                Net        of Shares   Per Share
        Nine Months Ended                     Income      Outstanding   Amount
        -----------------                    --------     -----------  ---------
<S>                                          <C>            <C>           <C>
        September 30, 1998

        Basic earnings per share             $241,674       320,158       $ .75
                                                                          =====
        Effect of dilutive stock options                     13,503
                                             --------       -------
        Diluted earnings per share           $241,674       333,661       $ .72
                                             ========       =======       =====

        September 30, 1997

        Basic earnings per share             $338,744       319,972       $1.06
                                                                          =====
        Effect of dilutive stock options                      4,676
                                             --------       -------
        Diluted earnings per share           $338,744       324,648       $1.04
                                             ========       =======       =====
</TABLE>

7.      COMPREHENSIVE INCOME

        On January 1, 1998, the Company adopted SFAS 130, Reporting
        Comprehensive Income, which establishes standards for the reporting and
        display of comprehensive income and its components in a full set of
        financial statements. The Statement requires that all items that are
        required to be recognized under accounting standards as components of
        comprehensive income be reported. Other comprehensive income, net of
        tax, was comprised of the unrealized gain on available-for-sale
        investment securities for the nine month periods ended September 30,
        1998 and 1997 and totaled $7,811 and $7,342 respectively. Total
        comprehensive income, net of taxes, was $249,485 and $346,086 for the
        nine month periods ended September 30, 1998 and 1997, respectively.

8.      NEW ACCOUNTING PRONOUNCEMENT

        In June 1998, the FASB issued Statement No. 133, Accounting for
        Derivative Instruments and Hedging Activities, which is required to be
        adopted in years beginning after June 15, 1999. Because of the Company's
        minimal use of derivatives, Management does not anticipate that the
        adoption of the new Statement will have a significant effect on earnings
        or the financial position of the Company.


                                      F-97

<PAGE>   357

                          INDEPENDENT AUDITOR'S REPORT


The Stockholders and
     Board of Directors
Roseville 1st National Bank
Roseville, California

           We have audited the accompanying balance sheet of Roseville 1st
National Bank as of December 31, 1997 and 1996, and the related statements of
income, stockholders' equity and cash flows for each of the three years in the
period ended December 31, 1997. These financial statements are the
responsibility of the Bank's management. Our responsibility is to express an
opinion on these financial statements based on our audits.

           We conducted our audits in accordance with generally accepted
auditing standards. Those standards require that we plan and perform the audits
to obtain reasonable assurance about whether the financial statements are free
of material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.

           In our opinion, the financial statements referred to above present
fairly, in all material respects, the financial position of Roseville 1st
National Bank as of December 31, 1997 and 1996 and the results of its operations
and its cash flows for each of the three years in the period ended December 31,
1997, in conformity with generally accepted accounting principles.



                                         /s/ PERRY-SMITH & CO., LLP
                                         ---------------------------------------
                                         Certified Public Accountants

Sacramento, California
March 20, 1998

                                      F-98
<PAGE>   358

                           ROSEVILLE 1ST NATIONAL BANK

                                  BALANCE SHEET

                           DECEMBER 31, 1997 AND 1996
<TABLE>
<CAPTION>

                                                                                             1997                 1996
                                                                                          -----------          -----------
<S>                                                                                       <C>                  <C>
                      ASSETS

Cash and due from banks                                                                   $ 1,830,279          $ 1,792,288
Federal funds sold                                                                          6,720,000            3,440,000
Loans held for sale                                                                           227,150              110,000
Investment securities (market value of $4,010,300
    in 1997 and $4,266,600 in 1996) (Note 2)                                                4,010,300            4,263,669
Loans, less allowance for loan losses of $723,880
    in 1997 and $253,560 in 1996 (Note 3)                                                  34,125,423           27,090,500
Bank premises and equipment, net (Note 4)                                                   1,720,231            1,443,303
Deferred tax assets, net (Note 5)                                                             303,000              230,000
Accrued interest receivable and other assets (Note 11)                                      1,651,293              338,370
                                                                                          -----------          -----------

                                                                                          $50,587,676          $38,708,130
                                                                                          ===========          ===========

                 LIABILITIES AND
               STOCKHOLDERS' EQUITY

Deposits:
    Non-interest bearing                                                                  $ 8,526,329          $ 4,539,246
    Interest bearing (Note 6)                                                              37,823,066           30,147,852
                                                                                          -----------          -----------

            Total deposits                                                                 46,349,395           34,687,098

Accrued interest payable and other liabilities                                                273,782              245,993
                                                                                          -----------          -----------

            Total liabilities                                                              46,623,177           34,933,091
                                                                                          -----------          -----------

Commitments and contingencies (Note 7)

Stockholders' equity (Note 8):
    Common stock - $5 par value; 5,000,000
        shares authorized - 319,972 shares issued
        and outstanding                                                                     1,599,860            1,599,860
    Additional paid-in capital                                                                421,574              421,574
    Retained earnings since December 31, 1990 when the deficit of $1,729,001 was
        transferred to additional paid-in capital as part of a quasi-
        reorganization                                                                      1,931,885            1,750,166
    Net unrealized gain on available-for-sale
        investment securities, net of taxes (Note 2)                                           11,180                3,439
                                                                                          -----------          -----------

            Total stockholders' equity                                                      3,964,499            3,775,039
                                                                                          -----------          -----------

                                                                                          $50,587,676          $38,708,130
                                                                                          ===========          ===========
</TABLE>

                     The accompanying notes are an integral
                       part of these financial statements.


                                      F-99
<PAGE>   359

                           ROSEVILLE 1ST NATIONAL BANK

                               STATEMENT OF INCOME

              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995

<TABLE>
<CAPTION>

                                                         1997             1996            1995
                                                      ----------       ----------       ----------
<S>                                                   <C>              <C>              <C>
Interest income:
    Interest and fees on loans                        $3,286,609       $2,545,138       $2,163,619
    Interest on Federal funds sold                       341,603          251,169          225,855
    Interest on deposits in banks                                           5,748           12,653
    Interest on taxable investment securities            266,264          226,179          261,936
                                                      ----------       ----------       ----------

            Total interest income                      3,894,476        3,028,234        2,664,063

Interest expense on deposits (Note 6)                  1,663,920        1,331,181        1,287,862
                                                      ----------       ----------       ----------

            Net interest income                        2,230,556        1,697,053        1,376,201

Provision for loan losses (Note 3)                       564,000           89,200           55,000
                                                      ----------       ----------       ----------

            Net interest income after provision
                for loan losses                        1,666,556        1,607,853        1,321,201
                                                      ----------       ----------       ----------

Non-interest income:
    Service charges and fees                              58,200           33,061           20,436
    Gain on sale of loans                                 98,761           58,229           32,249
    Other income                                         184,039          137,149           73,429
                                                      ----------       ----------       ----------

            Total non-interest income                    341,000          228,439          126,114
                                                      ----------       ----------       ----------

Other expenses:
    Salaries and employee benefits
        (Notes 3 and 11)                                 817,541          701,482          578,111
    Occupancy and equipment                              176,921          150,110          145,563
    Other (Note 9)                                       698,375          478,894          421,807
                                                      ----------       ----------       ----------

            Total other expenses                       1,692,837        1,330,486        1,145,481
                                                      ----------       ----------       ----------

            Income before income taxes                   314,719          505,806          301,834

Income taxes (Note 5)                                    133,000          204,000          104,000
                                                      ----------       ----------       ----------

            Net income                                $  181,719       $  301,806       $  197,834
                                                      ==========       ==========       ==========

Basic earnings per share (Note 8)                     $      .57       $      .94       $      .62
                                                      ==========       ==========       ==========

Diluted earnings per share (Note 8)                   $      .56       $      .93       $      .61
                                                      ==========       ==========       ==========
</TABLE>



                     The accompanying notes are an integral
                       part of these financial statements.


                                     F-100
<PAGE>   360

                           ROSEVILLE 1ST NATIONAL BANK

                        STATEMENT OF STOCKHOLDERS' EQUITY

              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995

<TABLE>
<CAPTION>

                                                                                         UNREALIZED
                                                                                           GAIN ON
                                                                                         AVAILABLE-
                                  COMMON STOCK             ADDITIONAL                     FOR-SALE
                           ---------------------------       PAID-IN       RETAINED      INVESTMENT
                               SHARES        AMOUNT          CAPITAL       EARNINGS      SECURITIES        TOTAL
                           -----------    ------------    ------------    ----------    ------------    ----------

<S>                        <C>           <C>              <C>             <C>            <C>            <C>
Balance,
   January 1, 1995             319,572    $  1,597,860    $    420,574    $1,250,526                    $3,268,960

Net income                                                                   197,834                       197,834
                           -----------    ------------    ------------    ----------    ------------    ----------

Balance,
   December 31, 1995           319,572       1,597,860         420,574     1,448,360                     3,466,794

Issuance of common
   stock under Stock
   Option Plan (Note 8)            400           2,000           1,000                                       3,000

Net income                                                                   301,806                       301,806

Unrealized gain on
   available-for-sale
   investment secur-
   ities, net of taxes                                                                  $      3,439         3,439
                           -----------    ------------    ------------    ----------    ------------    ----------

Balance,
   December 31, 1996           319,972       1,599,860         421,574     1,750,166           3,439     3,775,039

Net income                                                                   181,719                       181,719

Net change in un-
   realized gain on
   available-for-sale
   investment secur-
   ities, net of taxes
   (Note 2)                                                                                    7,741         7,741
                           -----------    ------------    ------------    ----------    ------------    ----------

Balance,
   December 31, 1997           319,972    $  1,599,860    $    421,574    $1,931,885    $     11,180    $3,964,499
                           ===========    ============    ============    ==========    ============    ==========
</TABLE>





                     The accompanying notes are an integral
                       part of these financial statements.


                                     F-101
<PAGE>   361

                           ROSEVILLE 1ST NATIONAL BANK

                             STATEMENT OF CASH FLOWS

              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
<TABLE>
<CAPTION>

                                                          1997                 1996                  1995
                                                      -----------           -----------           -----------
<S>                                                   <C>                   <C>                   <C>
Cash flows from operating activities:
   Net income                                         $   181,719           $   301,806           $   197,834
   Adjustments to reconcile net income
      to net cash provided by operating
      activities:
        Provision for loan losses                         564,000                89,200                55,000
        Depreciation, accretion and
           amortization, net                               89,443                86,064                15,475
        Loss on sale of other real estate                   3,914
        (Decrease) increase in deferred
           loan origination fees and costs,
           net                                            (49,116)               44,036                15,479
        (Increase) decrease in loans held
           for sale                                      (117,150)              699,475
        Increase in accrued interest
           receivable and other assets                   (117,923)              (41,710)             (150,451)
        Gain on sale of equipment                            (300)               (1,810)
        Increase in accrued interest payable
           and other liabilities                           27,789                76,746                45,396
        Deferred income taxes                             (77,000)              111,000                81,000
                                                      -----------           -----------           -----------

             Net cash provided by operating
                activities                                505,376             1,364,807               259,733
                                                      -----------           -----------           -----------

Cash flows from investing activities:
   Purchase of available-for-sale investment
      securities                                         (519,900)           (3,807,507)
   Purchase of held-to-maturity investment
      securities                                                                                   (3,861,063)
   Proceeds from sale of available-for-sale
      investment securities                                                      37,400
   Proceeds from called available-for-sale
      investment securities                               500,000
   Proceeds from called held-to-maturity
      investment securities                                                   1,479,464               420,536
   Proceeds from matured held-to-maturity
      investment securities                               300,000             1,250,000             3,300,000
   Net decrease in interest-bearing
      deposits in banks                                                         199,000
   Net increase in loans                               (7,667,307)           (4,498,306)           (4,934,096)
   Purchase of premises and equipment                    (381,361)              (47,096)           (1,408,020)
   Proceeds from sale of equipment                            300                 1,810
   Proceeds from sale of other real estate                113,586
   Purchase of life insurance policies                 (1,195,000)
                                                      -----------           -----------           -----------
             Net cash used in investing
                activities                             (8,849,682)           (5,385,235)           (6,482,643)
                                                      -----------           -----------           -----------
</TABLE>

                                   (Continued)

                                     F-102
<PAGE>   362

                           ROSEVILLE 1ST NATIONAL BANK

                             STATEMENT OF CASH FLOWS
                                   (Continued)
              FOR THE YEARS ENDED DECEMBER 31, 1997, 1996 AND 1995
<TABLE>
<CAPTION>

                                                               1997                 1996                1995
                                                           -----------          -----------          -----------
<S>                                                        <C>                  <C>                  <C>
Cash flows from financing activities:
   Net increase in demand, interest-
      bearing and savings deposits                         $ 6,043,449          $ 6,175,971          $ 4,842,832
   Net increase in time deposits                             5,618,848              242,394              431,517
   Proceeds from exercise of stock options                                            3,000
                                                           -----------          -----------          -----------

        Net cash provided by
           financing activities                             11,662,297            6,421,365            5,274,349
                                                           -----------          -----------          -----------

        Increase (decrease) in cash and
           cash equivalents                                  3,317,991            2,400,937             (948,561)

Cash and cash equivalents at
   beginning of year                                         5,232,288            2,831,351            3,779,912
                                                           -----------          -----------          -----------

Cash and cash equivalents at
   end of year                                             $ 8,550,279          $ 5,232,288          $ 2,831,351
                                                           ===========          ===========          ===========


Supplemental disclosure of cash flow information:

   Cash paid during the year for:

      Interest expense                                     $ 1,648,035          $ 1,362,926          $ 1,278,679
      Income taxes                                         $   162,500          $    23,100          $       800

Non-cash investing activities:

   Real estate acquired through
      foreclosure                                          $   188,100

   Net change in unrealized gain on
      available-for-sale investment
      securities                                           $    11,706          $     5,210
</TABLE>


                     The accompanying notes are an integral
                       part of these financial statements.

                                      F-103
<PAGE>   363

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS


1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

           General

           The accounting and reporting policies of Roseville 1st National Bank
           (the "Bank") conform with generally accepted accounting principles
           and prevailing practices within the banking industry.

           Reclassifications

           Certain reclassifications have been made to prior years' balances to
           conform to classifications used in 1997.

           Cash Equivalents

           For the purpose of the statement of cash flows, the Bank considers
           cash and due from banks and Federal funds sold to be cash
           equivalents. Generally, Federal funds are sold for one day periods.

           Loan Sales and Servicing

           The Bank originates mortgage loans that are either held in the Bank's
           loan portfolio or sold in the secondary market. Loans held for sale
           are carried at the lower of cost or market value. Market value is
           determined by the specific identification method as of the balance
           sheet date or the date which the purchasers have committed to
           purchase the loans. At the time the loan is sold, the related right
           to service the loan is either retained, with the Bank earning future
           servicing income, or released in exchange for a one-time
           servicing-released premium. Mortgage loans subsequently transferred
           to the loan portfolio are transferred at the lower of cost or market
           value at the date of transfer. Any difference between the carrying
           amount of the loan and its outstanding principal balance is
           recognized as an adjustment to yield by the interest method. The Bank
           serviced loans for others totaling approximately $4,314,000 and
           $4,600,000 as of December 31, 1997 and 1996, respectively.

           The Bank adopted Financial Accounting Standards Board Statement No.
           125 (SFAS 125), Accounting for Transfers and Servicing of Financial
           Assets and Extinguishments of Liabilities on January 1, 1997. This
           Statement superseded SFAS 122, Accounting for Mortgage Servicing
           Rights, an Amendment of FASB Statement No. 65, which was adopted by
           the Bank on October 1, 1996. Under SFAS 125, sales of financial
           assets are recognized when the transferred assets are put beyond the
           reach of the transferor and its creditors, even in bankruptcy or
           receivership.



                                      F-104
<PAGE>   364

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

           Loan Sales and Servicing (Continued)

           Under SFAS 125, servicing rights acquired through 1) a purchase or 2)
           the origination of loans which are sold or securitized with servicing
           rights retained are recognized as separate assets or liabilities.
           Servicing assets or liabilities are recorded at the difference
           between the contractual servicing fees and adequate compensation for
           performing the servicing, and are subsequently amortized in
           proportion to and over the period of the related net servicing income
           or expense. Servicing assets are periodically evaluated for
           impairment. Fair values are estimated using discounted cash flows
           based on current market interest rates. For purposes of measuring
           impairment, servicing assets are stratified based on note rate and
           term. The amount of impairment recognized is the amount by which the
           servicing assets for a stratum exceed their fair value. Servicing
           rights acquired during the year ended December 31, 1997 were not
           considered material for disclosure purposes.

           Investment Securities

           Investments are classified into the following categories:

                     o         Available-for-sale securities, reported at fair
                               value, with unrealized gains and losses excluded
                               from earnings and reported, net of taxes, as a
                               separate component of stockholders' equity.

                     o         Held-to-maturity securities, which management has
                               the positive intent and ability to hold, reported
                               at amortized cost, adjusted for the accretion of
                               discounts and amortization of premiums.

           Management determines the appropriate classification of its
           investments at the time of purchase and may only change the
           classification in certain limited circumstances. All transfers
           between categories are accounted for at fair value.

           Gains or losses on the sale of securities are computed using the
           specific identification method. Interest earned on investment
           securities is reported in interest income, net of applicable
           adjustments for accretion of discounts and amortization of premiums.
           In addition, unrealized losses that are other than temporary are
           recognized in earnings for all investments.


                                      F-105

<PAGE>   365

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

           Loans

           Loans are stated at principal balances outstanding, except for loans
           held for sale which are carried at the lower of principal balance or
           market value at the date of transfer, adjusted for accretion of
           discounts. Interest is accrued daily based upon outstanding loan
           balances. Discounts on retail contracts are deferred and amortized
           into income over their respective lives using a method which
           approximates the interest method. However, when, in the opinion of
           management, the future collectibility of interest and principal is in
           serious doubt, loans and retail contracts are placed on nonaccrual
           status and the accrual of interest income is suspended. Any interest
           accrued but unpaid is charged against income. Payments received are
           applied to reduce principal to the extent necessary to ensure
           collection. Subsequent payments on these loans, or payments received
           on nonaccrual loans for which the ultimate collectibility of
           principal is not in doubt, are applied first to earned but unpaid
           interest and then to principal.

           An impaired loan is measured based on the present value of expected
           future cash flows discounted at the loan's effective interest rate
           or, as a practical matter, at the loan's observable market price or
           the fair value of collateral if the loan is collateral dependent. A
           loan is considered impaired when, based on current information and
           events, it is probable that the Bank will be unable to collect all
           amounts due (including both principal and interest) in accordance
           with the contractual terms of the loan agreement.

           Substantially all loan origination fees, commitment fees, direct loan
           origination costs and purchase premiums and discounts on loans are
           deferred and recognized as an adjustment of yield, to be amortized to
           interest income over the contractual term of the loan. The
           unamortized balance of deferred fees and costs is reported as a
           component of net loans.

           Allowance for Loan Losses

           The allowance for loan losses is maintained to provide for losses
           related to impaired loans and other losses that can be expected to
           occur in the normal course of business. The determination of the
           allowance is based on estimates made by management, to include
           consideration of the character of the loan and contract portfolio,
           specifically identified problem loans, potential losses inherent in
           the portfolio taken as a whole and economic conditions in the Bank's
           service area. These estimates are particularly susceptible to changes
           in the economic environment and market conditions. The allowance is
           established through a provision for loan losses which is charged to
           expense.

           Other Real Estate

           Other real estate includes real estate acquired in full or partial
           settlement of loan obligations. When property is acquired, any excess
           of the Bank's recorded investment in the loan balance and accrued
           interest income over the estimated fair market value of the property
           is charged against the allowance for loan losses. A valuation
           allowance for losses on other real estate is maintained to provide
           for temporary declines in value. The allowance is established through
           a provision for losses on other real estate which is included in
           other expenses. Subsequent gains or losses on sales or writedowns
           resulting from permanent impairments are recorded in other income or
           expense as incurred.

                                      F-106


<PAGE>   366

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

1.         SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

           Bank Premises and Equipment

           Bank premises and equipment are carried at cost. Depreciation is
           determined using the straight-line method over the estimated useful
           lives of the related assets. The useful lives of bank premises are
           estimated to be five to forty years. The useful lives of furniture
           and equipment are estimated to be five to ten years. Leasehold
           improvements are amortized over the life of related lease, or the
           life of the asset, whichever is shorter. When assets are sold or
           otherwise disposed of, the cost and related accumulated depreciation
           are removed from the accounts, and any resulting gain or loss is
           recognized in income for the period. The cost of maintenance and
           repairs is charged to expense as incurred.

           Income Taxes

           Deferred tax assets and liabilities are recognized for the tax
           consequences of temporary differences between the financial statement
           and tax basis of existing assets and liabilities.

           Earnings Per Share

           In February 1997, the Financial Accounting Standards Board issued
           Statement No. 128, Earnings per Share, which established new
           standards for computing and presenting earnings per share (EPS). This
           Statement was adopted by the Bank for financial statements issued for
           the year ended December 31, 1997 and requires the restatement of all
           prior-period EPS data presented.

           Basic EPS, which excludes dilution, is computed by dividing income
           available to common stockholders by the weighted-average number of
           common shares outstanding for the period and replaces the
           presentation of primary EPS. Diluted EPS reflects the potential
           dilution that could occur if securities or other contracts to issue
           common stock, such as stock options, result in the issuance of common
           stock which shares in the earnings of the Bank. Diluted EPS is
           computed similarly to, and replaces the presentation of, fully
           diluted EPS. The treasury stock method has been applied to determine
           the dilutive effect of stock options in computing diluted EPS.

           Use of Estimates

           The preparation of financial statements in conformity with generally
           accepted accounting principles requires management to make estimates
           and assumptions. These estimates and assumptions affect the reported
           amounts of assets and liabilities at the date of the financial
           statements and the reported amounts of revenues and expenses during
           the reporting period. Actual results could differ from these
           estimates.


                                      F-107
<PAGE>   367

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)


1.      SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Continued)

        Stock-Based Compensation

        Stock options are accounted for under the intrinsic value method
        prescribed in Accounting Principles Board Opinion No. 25, Accounting
        for Stock Issued to Employees. Accordingly, compensation cost for
        stock options is measured as the excess, if any, of the quoted market
        price of the Bank's stock at the date of grant over the exercise
        price. However, if the fair value of stock-based compensation
        computed under a fair value based method, as prescribed in Statement
        of Financial Accounting Standards No. 123, Accounting for Stock-Based
        Compensation, is material to the financial statements, proforma net
        income and earnings per share are disclosed as if the fair value
        method had been applied. Compensation cost related to options granted
        during 1995 were considered by management to be immaterial for
        disclosure purposes.

2.      INVESTMENT SECURITIES

        The amortized cost and estimated market value of investment
        securities at December 31, 1997 and 1996 consisted of the following:

        Available-for-Sale:

<TABLE>
<CAPTION>
                                                      1997
                              ----------------------------------------------------
                                               Gross         Gross      Estimated
                              Amortized     Unrealized    Unrealized     Market
                                 Cost          Gains        Losses        Value
                              ----------    ----------    ----------    ----------
<S>                           <C>           <C>           <C>           <C>
        U.S. Treasury
             securities       $1,990,170    $    9,730                  $1,999,900
        U.S. Government
             agencies          1,747,814         7,186                   1,755,000
        Federal Home Loan
             Bank stock          119,700                                   119,700
        Federal Reserve
             Bank stock           60,700                                    60,700
        Pacific Coast Bankers'
             Bank stock           75,000                                    75,000
                              ----------    ----------    ----------    ----------

                              $3,993,384    $   16,916    $       --    $4,010,300
                              ==========    ==========    ==========    ==========
</TABLE>

                                      F-108
<PAGE>   368

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

2.         INVESTMENT SECURITIES (Continued)

           Available-for-Sale: (Continued)
<TABLE>
<CAPTION>

                                                                        1996
                                         -----------------------------------------------------------------------
                                                               Gross              Gross              Estimated
                                         Amortized           Unrealized         Unrealized             Market
                                            Cost                Gains             Losses                Value
                                         ----------          ----------          ----------           ----------
           <S>                           <C>                 <C>                 <C>                  <C>
           U.S. Treasury
                securities                $1,977,126          $   10,974                              $1,988,100
           U.S. Government
                agencies                   1,746,564                              $   (5,764)          1,740,800
           Federal Home Loan
                Bank stock                    99,800                                                      99,800
           Federal Reserve
                Bank stock                    60,700                                                      60,700
           Pacific Coast Bankers'
                Bank stock                    75,000                                                      75,000
                                          ----------          ----------          ----------          ----------

                                          $3,959,190          $   10,974          $   (5,764)         $3,964,400
                                          ==========          ==========          ==========          ==========
           </TABLE>

           Net unrealized gains on available-for-sale investment securities
           totaling $16,916 and $5,210 were recorded net of $5,736 and $1,771 in
           tax liabilities as a separate component of stockholders' equity at
           December 31, 1997 and 1996, respectively. Proceeds from the sale of
           available-for-sale investment securities totaled $37,400 for the year
           ended December 31, 1996, with no gain or loss recognized. There were
           no sales of available-for-sale investment securities in 1997 or 1995.

           Held-to-Maturity:
<TABLE>
<CAPTION>

                                                                        1996
                                              ----------------------------------------------------------
                                                                  Gross           Gross        Estimated
                                                 Amortized     Unrealized      Unrealized       Market
                                                   Cost           Gains          Losses          Value
                                              -----------     -----------      -----------    ---------
<S>                                           <C>             <C>               <C>           <C>
           U.S. Government
             agencies                         $   299,269     $     2,931       $       --    $ 302,200
                                              ===========     ===========      ===========    =========

</TABLE>

           There were no sales or transfers of held-to-maturity investment
           securities during the years ended December 31, 1997, 1996 or 1995. At
           December 31, 1997, the Bank's portfolio contained no held-to-maturity
           investment securities.



                                      F-109
<PAGE>   369

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

2.         INVESTMENT SECURITIES (Continued)

           The amortized cost and estimated market value of investment
           securities at December 31, 1997 by contractual maturity is shown
           below. Expected maturities will differ from contractual maturities
           because borrowers may have the right to call or prepay obligations
           with or without call or prepayment penalties.
<TABLE>
<CAPTION>

                                                             Available-for Sale
                                                      ----------------------------------
                                                                              Estimated
                                                      Amortized                Market
                                                        Cost                    Value
                                                     ----------             ------------
<S>                                                  <C>                    <C>
           Within one year                           $  998,784             $  1,000,500
           After one year through five years          2,739,200                2,754,400
                                                     ----------             ------------

                                                      3,737,984                3,754,900

           Federal Home Loan Bank stock                 119,700                  119,700
           Federal Reserve Bank stock                    60,700                   60,700
           Pacific Coast Bankers' Bank stock             75,000                   75,000
                                                     ----------             ------------

                                                     $3,993,384             $  4,010,300
                                                     ==========             ============

</TABLE>
           Investment securities with amortized costs totaling $1,490,500 and
           $1,482,000 and estimated market values totaling $1,500,200 and
           $1,491,100 were pledged to secure public deposits at December 31,
           1997 and 1996, respectively.

3.         LOANS

           Outstanding loans are summarized as follows:
<TABLE>
<CAPTION>

                                                                        December 31,
                                                                  --------------------------
                                                                      1997           1996
                                                                  ------------   -----------

<S>                                                               <C>            <C>
           Real estate - mortgage                                 $  5,498,940   $ 3,366,099
           Real estate - commercial                                 10,780,097     6,416,104
           Real estate - construction                                7,319,152    11,151,425
           Commercial                                                8,714,911     4,471,666
           Installment                                               2,622,966     2,074,645
                                                                  ------------   -----------

                                                                    34,936,066    27,479,939

           Deferred loan origination fees and costs, net               (86,763)     (135,879)
           Allowance for loan losses                                  (723,880)     (253,560)
                                                                  ------------   -----------

                                                                  $ 34,125,423   $ 27,090,500
                                                                  ============   ============
</TABLE>


                                     F-110
<PAGE>   370

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

3.         LOANS (Continued)

           Changes in the allowance for loan losses for the years ended December
           31, 1997, 1996 and 1995 were as follows:
<TABLE>
<CAPTION>

                                                                     1997         1996          1995
                                                                  ----------    ---------    ----------

<S>                                                               <C>           <C>          <C>
           Balance, beginning of year                             $  253,560    $ 185,280    $  157,997
           Provision charged to operations                           564,000       89,200        55,000
           Losses charged to allowance                              (100,910)     (30,360)      (40,252)
           Recoveries                                                  7,230        9,440        12,535
                                                                  ----------    ---------    ----------

                  Balance, end of year                            $  723,880    $ 253,560    $  185,280
                                                                  ==========    =========    ==========
</TABLE>

           The recorded investment in loans that are considered to be impaired
           at December 31, 1997 totaled $550,000. The related allowance for loan
           losses at December 31, 1997 was $400,000. The Bank had no impaired
           loans during the year ended December 31, 1996.

           The Bank had no loans on nonaccrual status at December 31, 1997.
           Nonaccrual loans totaled $189,727 at December 31, 1996. Interest
           foregone on nonaccrual loans for the year ended December 31, 1997 was
           not considered to be significant.

           Salaries and employee benefits totaling $237,850, $133,286 and
           $116,305 have been deferred as loan origination costs during 1997,
           1996 and 1995, respectively.

4.         BANK PREMISES AND EQUIPMENT

           Bank premises and equipment consisted of the following:
<TABLE>
<CAPTION>

                                                                December 31,
                                                      ---------------------------------
                                                         1997                    1996
                                                      -----------           -----------

<S>                                                   <C>                   <C>
           Land                                       $   425,000           $   425,000
           Building                                       903,775               903,775
           Furniture and equipment                        729,978               491,903
           Leasehold improvements                          33,128
                                                      -----------           -----------

                                                        2,091,881             1,820,678
               Less accumulated depreciation
                  and amortization                       (371,650)             (377,375)
                                                      -----------           -----------

                                                      $ 1,720,231           $ 1,443,303
                                                      ===========           ===========
</TABLE>

           Depreciation and amortization included in occupancy and equipment
           expense totaled $104,433, $95,101 and $65,439 for the years ended
           December 31, 1997, 1996 and 1995, respectively.



                                     F-111

<PAGE>   371

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)

5.         INCOME TAXES

           As a result of the capital restructuring in 1990, the Bank is limited
           in its application of tax benefits arising from net operating losses
           which arose prior to its conversion to a National Bank. Consequently,
           the maximum future utilization of the Federal net operating loss
           carryovers, which arose prior to the capital restructuring, was
           limited to approximately $469,000. At December 31, 1997, the
           remaining carryovers of $410,000 may be utilized at the rate of
           approximately $59,000 per year. If not utilized, the carryovers will
           expire in the years 2003 and 2004.

           The provision for income taxes for the years ended December 31, 1997,
           1996 and 1995 consisted of the following:
<TABLE>
<CAPTION>

                                                   Federal              State               Total
                                                  ---------           ---------           ---------
<S>                                               <C>                 <C>                 <C>
           1997

           Current                                $ 144,000           $  66,000           $ 210,000
           Deferred                                 (45,000)            (32,000)            (77,000)
                                                  ---------           ---------           ---------

                      Income tax expense          $  99,000           $  34,000           $ 133,000
                                                  =========           =========           =========

           1996

           Current                                $  25,000           $  68,000           $  93,000
           Deferred                                 121,000             (10,000)            111,000
                                                  ---------           ---------           ---------

                      Income tax expense          $ 146,000           $  58,000           $ 204,000
                                                  =========           =========           =========

           1995

           Current                                                    $  23,000           $  23,000
           Deferred                               $  69,000              12,000              81,000
                                                  ---------           ---------           ---------

                      Income tax expense          $  69,000           $  35,000           $ 104,000
                                                  =========           =========           =========
</TABLE>

           Deferred tax assets (liabilities) are comprised of the following at
           December 31, 1997 and 1996:
<TABLE>
<CAPTION>

                                                                           1997             1996
                                                                      --------------  -------------
<S>                                                                   <C>             <C>
           Deferred tax assets:
               Net operating loss carryovers                          $      140,000  $     160,000
               Allowance for loan and contract losses                        299,000         91,000
               Future benefit of state tax deductions                          1,000         15,000
               Other                                                                          5,000
                                                                      --------------  -------------

                      Total deferred tax assets                              440,000        271,000
                                                                      --------------  -------------

</TABLE>


                                     F-112
<PAGE>   372

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)


5.         INCOME TAXES (Continued)

<TABLE>
<CAPTION>
                                                                        1997                1996
                                                                     ----------          ----------
<S>                                                                  <C>                 <C>
           Deferred tax liabilities:
               Adjustment for change in tax accounting
                  method                                             $ (103,000)         $  (39,000)
               Unrealized gain on available-for-sale
                  investment securities                                  (6,000)             (2,000)
               Future liability of state deferred tax asset             (15,000)
               Other                                                    (13,000)
                                                                     -----------         ----------

                      Total deferred tax liabilities                   (137,000)            (41,000)
                                                                     ----------          ----------

                      Net deferred tax assets                        $  303,000          $  230,000
                                                                     ==========          ==========
</TABLE>

           The provision for income taxes differs from amounts computed by
           applying the statutory Federal income tax rates to operating income
           before income taxes. The items comprising these differences are as
           follows:

<TABLE>
<CAPTION>
                                                            Year Ended December 31,
                                       ----------------------------------------------------------------
                                               1997                   1996                   1995
                                       ------------------     ------------------     ------------------
                                         Amount    Rate %       Amount    Rate %       Amount    Rate %
                                       ---------   ------     ---------   ------     ---------   ------
<S>                                    <C>         <C>        <C>         <C>        <C>         <C>
           Federal income tax
             expense, at statutory
             rate                      $ 107,004     34.0     $ 171,974     34.0     $ 102,624     34.0
           State franchise tax, net
             of Federal tax effect        22,519      7.2        37,984      7.5        22,612      7.5
           Change in tax rate used
             to measure deferred
             tax asset                                                                 (20,150)    (6.7)
           Other                           3,477      1.1        (5,958)    (1.2)       (1,086)     (.3)
                                       ---------   ------     ---------   ------     ---------   ------

                                       $ 133,000     42.3     $ 204,000     40.3     $ 104,000     34.5
                                       =========   ======     =========   ======     =========   ======
</TABLE>

6.         INTEREST-BEARING DEPOSITS

           Interest-bearing deposits consisted of the following:

<TABLE>
<CAPTION>
                                                   December 31,
                                         -------------------------------
                                             1997               1996
                                         ------------       ------------
<S>                                      <C>                <C>

           Money market                  $ 13,313,222       $ 12,003,808
           Savings                            924,218            700,643
           NOW accounts                     2,814,604          2,291,227
           Time, $100,000 or more           6,525,188          2,951,634
           Other time                      14,245,834         12,200,540
                                         ------------       ------------

                                         $ 37,823,066       $ 30,147,852
                                         ============       ============
</TABLE>


                                     F-113
<PAGE>   373

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)


6.         INTEREST-BEARING DEPOSITS (Continued)

           Interest expense recognized on interest-bearing deposits consisted of
           the following:

<TABLE>
<CAPTION>
                                                     Year Ended December 31,
                                         ------------------------------------------------
                                             1997              1996              1995
                                         ------------      ------------      ------------
<S>                                      <C>               <C>               <C>

           Money Market                  $    579,200      $    432,303      $    381,057
           Savings                             25,157            17,261             9,531
           NOW accounts                        55,842            58,911            42,328
           Time, $100,000 or more             256,597           135,689           147,597
           Other time                         747,124           687,017           707,349
                                         ------------      ------------      ------------

                                         $  1,663,920      $  1,331,181      $  1,287,862
                                         ============      ============      ============
</TABLE>

7.         COMMITMENTS AND CONTINGENCIES

           Financial Instruments With Off-Balance-Sheet Risk

           The Bank is a party to financial instruments with off-balance-sheet
           risk in the normal course of business to meet the financing needs of
           its customers and to reduce its own exposure to fluctuations in
           interest rates. These financial instruments include commitments to
           extend credit and letters of credit. These instruments involve, to
           varying degrees, elements of credit and interest rate risk in excess
           of the amount recognized on the balance sheet.

           The Bank's exposure to credit loss in the event of nonperformance by
           the other party for commitments to extend credit and letters of
           credit is represented by the contractual amount of those instruments.
           The Bank uses the same credit policies in making commitments and
           letters of credit as it does for loans included on the balance sheet.

           The following financial instruments represent off-balance-sheet
           credit risk:

<TABLE>
<CAPTION>
                                                         December 31,
                                               -------------------------------
                                                    1997               1996
                                               ------------       ------------
<S>                                            <C>                <C>
           Commitments to extend credit        $ 10,986,300       $  6,509,100
           Letters of credit                   $    108,500       $     93,000
</TABLE>

           Commitments to extend credit are agreements to lend to a customer as
           long as there is no violation of any condition established in the
           contract. Commitments generally have fixed expiration dates or other
           termination clauses and may require payment of a fee. Since some of
           the commitments are expected to expire without being drawn upon, the
           total commitment amounts do not necessarily represent future cash
           requirements. The Bank evaluates each customer's creditworthiness on
           a case-by-case basis. The amount of collateral obtained, if deemed
           necessary by the Bank upon extension of credit, is based on
           management's credit evaluation of the borrower. Collateral held
           varies, but may include accounts receivable, inventory, deeds of
           trust on commercial and residential real estate and bank accounts.


                                     F-114
<PAGE>   374

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)


7.         COMMITMENTS AND CONTINGENCIES (Continued)

           Financial Instruments With Off-Balance-Sheet Risk (Continued)

           Letters of credit are conditional commitments issued by the Bank to
           guarantee the performance of a customer to a third party. The credit
           risk involved in issuing letters of credit is essentially the same as
           that involved in extending loans to customers.

           At December 31, 1997, real estate commitments represent approximately
           88% of total commitments and are generally secured by property with a
           loan-to-value ratio not to exceed 80%. Commercial commitments
           represent approximately 11% of total commitments and are generally
           unsecured. Revolving lines of credit represent the remaining 1% of
           total commitments and are generally unsecured. The majority of the
           commitments have variable interest rates.

           Significant Concentrations of Credit Risk

           The Bank grants real estate mortgage, real estate construction,
           commercial and consumer loans to customers throughout Placer and
           Sacramento counties.

           Although the Bank has a diversified loan portfolio, a substantial
           portion of its portfolio is secured by commercial and residential
           real estate. However, business and personal income represent the
           primary source of repayment for a majority of these loans.

           Leases

           The Bank leases certain office premises under a long-term
           noncancelable lease. At December 31, 1997, future minimum lease
           payments are as follows:

<TABLE>
<CAPTION>
                          Year Ending
                          December 31,
                          ------------
<S>                                                          <C>

                              1998                           $   42,560
                              1999                               44,240
                              2000                                7,420
                                                             ----------
                                                             $   94,220
                                                             ==========
</TABLE>

           Rental expense included in occupancy and equipment expense for the
           years ended December 31, 1997, 1996 and 1995 totaled $27,711, $20,964
           and $50,712, respectively.

           Contingencies

           The Bank is subject to legal proceedings and claims which arise in
           the ordinary course of business. In the opinion of management, the
           amount of ultimate liability with respect to these actions will not
           materially affect the financial position or results of operations of
           the Bank.


                                     F-115
<PAGE>   375

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)


8.         STOCKHOLDERS' EQUITY

           Dividends

           Upon declaration by the Board of Directors, all stockholders of
           record will be entitled to receive dividends. Under applicable
           Federal laws, the Comptroller of the Currency restricts the total
           dividend payment of any national banking association in any calendar
           year to the net income of the year, as defined, combined with the
           retained net income for the two preceding years. At December 31,
           1997, retained earnings of $681,359 were free of such restrictions.

           Earnings Per Share

           A reconciliation of the numerators and denominators of the basic and
           diluted earnings per share computations is as follows:

<TABLE>
<CAPTION>
                                                                    Weighted
                                                                     Average
                                                                    Number of
                                                        Net          Shares         Per Share
                For the Year Ended                    Income       Outstanding        Amount
                ------------------                 ------------    ------------    ------------
<S>                                                <C>             <C>             <C>

           December 31, 1997

           Basic earnings per share                $    181,719         319,972    $        .57
                                                                                   ============

           Effect of dilutive stock options                               4,676
                                                   ------------    ------------

           Diluted earnings per share              $    181,719         324,648    $        .56
                                                   ============    ============    ============

           December 31, 1996

           Basic earnings per share                $    301,806         319,872    $        .94
                                                                                   ============

           Effect of dilutive stock options                               4,750
                                                   ------------    ------------

           Diluted earnings per share              $    301,806         324,622    $        .93
                                                   ============    ============    ============

           December 31, 1995

           Basic earnings per share                $    197,834         319,572    $        .62
                                                                                   ============

           Effect of dilutive stock options                               4,958
                                                   ------------    ------------

           Diluted earnings per share              $    197,834         324,530    $        .61
                                                   ============    ============    ============
</TABLE>


                                     F-116
<PAGE>   376

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)


8.         STOCKHOLDERS' EQUITY (Continued)

           Regulatory Capital

           The Bank is subject to certain regulatory capital requirements
           administered by the Office of the Comptroller of the Currency (OCC).
           Failure to meet these minimum capital requirements can initiate
           certain mandatory, and possibly additional discretionary, actions by
           regulators that, if undertaken, could have a direct material effect
           on the Bank's financial statements. Under capital adequacy guidelines
           and the regulatory framework for prompt corrective action, the Bank
           must meet specific capital guidelines that involve quantitative
           measures of the Bank's assets, liabilities and certain
           off-balance-sheet items as calculated under regulatory accounting
           practices. The Bank's capital amounts and classification are also
           subject to qualitative judgments by the regulators about components,
           risk weightings and other factors.

           Quantitative measures established by regulation to ensure capital
           adequacy require the Bank to maintain minimum amounts and ratios of
           total and Tier I capital to risk-weighted assets and of Tier I
           capital to average assets. Each of these components is defined in the
           regulations. Management believes that the Bank meets all its capital
           adequacy requirements as of December 31, 1997.

           In addition, the most recent notification from the OCC as of December
           31, 1997 categorized the Bank as well capitalized under the
           regulatory framework for prompt corrective action. To be categorized
           as well capitalized, the Bank must maintain minimum total risk-based,
           Tier I risk-based and Tier I leverage ratios as set forth below.
           There are no conditions or events since that notification that
           management believes have changed the Bank's category.

           The Bank's capital ratios and the respective minimum regulatory
           requirements at December 31, 1997, 1996 and 1995 were as follows:

<TABLE>
<CAPTION>
                                                         1997                        1996                      1995
                                                -----------------------    ----------------------     -----------------------
                                                  Amount          Ratio      Amount         Ratio       Amount          Ratio
                                                ----------        -----    ----------       -----     ----------        -----
<S>                                             <C>               <C>      <C>              <C>       <C>               <C>
           Leverage Ratio

           Roseville 1st National Bank          $3,832,319         8.6%    $3,635,039        10.3%    $3,307,794        11.4%

           Minimum requirement for "Well-
                Capitalized" institution        $2,226,300         5.0%    $1,758,100         5.0%    $1,449,400         5.0%
           Minimum regulatory requirement       $1,781,000         4.0%    $1,406,500         4.0%    $1,159,500         4.0%

           Tier I Risk-Based Capital Ratio

           Roseville 1st National Bank          $3,832,319         9.3%    $3,635,039        11.7%    $3,307,794        13.4%

           Minimum requirement for "Well-
                Capitalized" institution        $2,485,100         6.0%    $1,879,100         6.0%    $1,556,900         6.0%
           Minimum regulatory requirement       $1,656,700         4.0%    $1,252,800         4.0%    $1,038,000         4.0%

           Total Risk-Based Capital Ratio

           Roseville 1st National Bank          $4,352,588        10.5%    $3,888,599        12.5%    $3,493,074        14.1%

           Minimum requirement for "Well-
                Capitalized" institution        $4,142,000        10.0%    $3,131,900        10.0%    $2,594,900        10.0%
           Minimum regulatory requirement       $3,313,000         8.0%    $2,505,500         8.0%    $2,075,900         8.0%
</TABLE>


                                     F-117
<PAGE>   377

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)


8.         STOCKHOLDERS' EQUITY (Continued)

           Stock Options

           During 1990, in conjunction with the capital restructuring, 200,000
           shares of common stock were reserved for purchase at fair market
           value by certain directors. Also in 1990, as part of his employment
           agreement, the Bank's President was granted options to purchase
           133,333 shares of common stock at fair market value. These shares
           were proportionately reduced in 1992 to reflect the one-for-ten
           reverse stock split. These options vested immediately and will expire
           ten years from the date of grant.

           In 1993, the Board of Directors adopted the 1993 Stock Option Plan to
           reserve common stock for purchase, at fair market value, by
           directors, officers, and certain full-time Bank employees, as
           determined by the Board of Directors. The shares vest ratably over
           five years and will expire ten years from the date of grant.

           The activity within the plan is summarized as follows:

<TABLE>
<CAPTION>
                                           1997                   1996                  1995
                                    ------------------    ------------------    -----------------
                                              Weighted              Weighted             Weighted
                                              Average               Average              Average
                                              Exercise              Exercise             Exercise
                                     Shares    Price       Shares    Price       Shares   Price
                                    -------   --------    -------   --------    -------  --------
<S>                                 <C>       <C>         <C>       <C>         <C>      <C>
           Options outstanding
             beginning of year       74,833   $  7.50      76,333   $  7.50      80,333   $  7.50

             Options granted          2,000   $  8.00
             Options exercised                               (400)  $  7.50
             Options canceled                              (1,100)  $  7.50      (4,000)  $  7.50
                                    -------               -------               -------

           Options outstanding,
             end of year             76,833   $  7.51      74,833   $  7.50      76,333   $  7.50
                                    =======               =======               =======

           Options exercisable,
             end of year             58,033   $  7.50      49,633   $  7.50      42,733   $  7.50
                                    =======               =======               =======
</TABLE>

           A summary of options outstanding at December 31, 1997 follows:

<TABLE>
<CAPTION>
                                Number of        Weighted        Number of
                                 Options          Average         Options
                               Outstanding       Remaining      Exercisable
                               December 31,     Contractual     December 31,
           Exercise Price          1997            Life             1997
           --------------      ------------    ------------     ------------
<S>                            <C>             <C>              <C>

           $ 7.50                    74,833         5 years           58,033
           $ 8.00                     2,000         9 years
                               ------------                     ------------
                                     76,833                           58,033
                               ============                     ============
</TABLE>


                                     F-118
<PAGE>   378

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)


9.         OTHER EXPENSES

           Other expenses consisted of the following:

<TABLE>
<CAPTION>
                                                                Year Ended December 31,
                                                   ------------------------------------------------
                                                       1997              1996              1995
                                                   ------------      ------------      ------------
<S>                                                <C>               <C>               <C>

           Telephone and utilities                 $     68,386      $     42,414      $     30,730
           Office expenses                               92,832            71,343            62,496
           Insurance and bonds                           32,476            29,679            26,385
           Auto, travel and entertainment                59,103            43,219            32,564
           Loan expenses                                 55,754            86,002            73,450
           Outside services                             153,204            70,964            56,579
           Regulatory assessments                        25,108            19,498            44,157
           Visa merchant expenses                        44,534            43,008            18,137
           Other operating expenses                     166,978            72,767            77,309
                                                   ------------      ------------      ------------

                                                   $    698,375      $    478,894      $    421,807
                                                   ============      ============      ============
</TABLE>

10.        RELATED PARTY TRANSACTIONS

           During the normal course of business, the Bank enters into
           transactions with related parties, including directors and officers.
           These transactions include borrowings from the Bank with
           substantially the same terms, including rates and collateral, as
           loans to unrelated parties. The following is a summary of activity
           involving related party borrowers during 1997:

<TABLE>
<S>                                                    <C>
           Balance, January 1, 1997                    $  1,354,889

               Disbursements                                715,051
               Amounts repaid                              (497,038)
                                                       ------------
           Balance, December 31, 1997                  $  1,572,902
                                                       ============

           Undisbursed commitments to related
               parties, December 31, 1997              $      8,794
                                                       ============
</TABLE>

11.        EMPLOYEE BENEFIT PLANS

           Salary Deferral Plan

           The Bank adopted the Roseville 1st National Bank 401(k) Profit
           Sharing Plan and Trust effective January 1, 1995. The Plan is
           available to all employees. Under the Plan, the Bank will match 50%
           of each participant's contribution up to a maximum of 6% of their
           annual compensation. Employer contributions vest at a rate of 20% for
           each completed year of employment and totaled $19,188, $15,381 and
           $16,296 for the years ended December 31, 1997, 1996 and 1995,
           respectively.


                                     F-119
<PAGE>   379

                           ROSEVILLE 1ST NATIONAL BANK

                          NOTES TO FINANCIAL STATEMENTS
                                   (Continued)


11.        EMPLOYEE BENEFIT PLANS (Continued)

           Salary Continuation Plans

           In December 1997, the Board of Directors approved salary continuation
           plans for three key executives. Under these plans, the Bank is
           obliged to provide the executives, or designated beneficiaries, with
           annual benefits for fifteen years after retirement or death. These
           benefits are substantially equivalent to those available under seven
           insurance policies purchased in December 1997 by the Bank for
           $1,195,000 on the lives of the executives. In addition, the estimated
           present value of the future benefits will begin accruing in 1998
           until the employees' expected retirement dates.


                                     F-120
<PAGE>   380

                                                                       EXHIBIT I


                AGREEMENT AND PLAN OF REORGANIZATION AND MERGER


                               DATED: MAY 27, 1998



                                  BY AND AMONG



                             WESTERN SIERRA BANCORP

                               LMC MERGER COMPANY

                                       AND

                               LAKE COMMUNITY BANK


<PAGE>   381

                 AGREEMENT AND PLAN OF REORGANIZATION AND MERGER


        This AGREEMENT AND PLAN OF REORGANIZATION AND MERGER (the "Agreement")
is entered into as of May 27, 1998 by and among LAKE COMMUNITY BANK, a
California state-chartered bank ("LCB"), WESTERN SIERRA BANCORP, a California
corporation ("BANCORP"), and LMC MERGER COMPANY, a California corporation
("LMC"), which is a wholly-owned subsidiary of BANCORP.


                                    RECITALS:

        WHEREAS, the respective Boards of Directors of LCB and BANCORP have
determined that it is in the best interests of LCB and BANCORP and their
respective shareholders for LCB to be merged with LMC, upon the terms and
subject to the conditions set forth in this Agreement and in accordance with the
California Corporations Code, the California Financial Code and other applicable
laws;

        WHEREAS, each of the Boards of Directors of LCB and BANCORP have
approved this Agreement and the transactions contemplated hereby;

        WHEREAS, LCB's and BANCORP'S Boards of Directors have resolved to
recommend approval of the merger of LCB and LMC to their respective
shareholders; and

        WHEREAS, upon the consummation of the Merger of LCB with LMC, LCB shall
become a wholly-owned subsidiary of BANCORP.

        NOW, THEREFORE, in consideration of these premises and the
representations, warranties and agreements herein contained, LCB and BANCORP
hereby agree as follows:

                             ARTICLE 1. DEFINITIONS

As used in this Agreement, the following terms shall have the meanings set forth
below:

        "Acquisition Event" shall mean any of the following:

        (a)    Prior to the termination of this Agreement, either LCB or BANCORP
               shall have authorized, recommended, publicly proposed or publicly
               announced an intention to authorize, recommend or propose, or
               shall have entered or announced an intention to enter into a
               letter of intent, an agreement-in-principle or a definitive
               agreement with any Person (other than LCB, BANCORP or any of
               their respective Subsidiaries) to effect, an Acquisition
               Transaction or failed to publicly oppose a Tender Offer or an
               Exchange Offer (as defined below). As used herein, the term
               "Acquisition Transaction" shall mean (i) a merger, consolidation
               or similar transaction involving LCB, BANCORP or any of their
               respective Subsidiaries (other than internal mergers,
               reorganizations, consolidations or dissolutions involving only
               existing Subsidiaries), (ii) the disposition, by sale, lease,
               exchange, dissolution or liquidation, or otherwise,


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<PAGE>   382



               of all or substantially all of the assets of LCB or BANCORP or
               any asset or assets of LCB or BANCORP the disposition or lease of
               which would result in a material change in the business or
               business operations of LCB or BANCORP, a transfer of any shares
               of stock or other securities of LCB or BANCORP by LCB or BANCORP,
               or a material change in the assets, liabilities or results of
               operations or the future prospects of LCB or BANCORP, including,
               but not limited to a grant of an option entitling any Person to
               acquire any shares of stock of LCB or BANCORP or any assets
               material to the business of LCB or BANCORP; or (iii) the
               issuance, other than pursuant to outstanding stock options, sale
               or other disposition by LCB or BANCORP (including, without
               limitation, by way of merger, consolidation, share exchange or
               any similar transaction) of shares of LCB Common Stock or BANCORP
               Common Stock or other Equity Securities, or the grant of any
               option, warrant or other right to acquire shares of LCB Common
               Stock or BANCORP Common Stock or other Equity Securities,
               representing directly, or on an as-exercised, as-exchanged or
               as-converted basis (in the case of options, warrants, rights or
               exchangeable or convertible Equity Securities), 15% or more of
               the voting securities of LCB or BANCORP;

        (b)    Prior to termination of this Agreement (i) any Person (other than
               a person who is a party to a Director Shareholder Agreement)
               shall have increased the number of shares of LCB Common Stock or
               BANCORP Common Stock over which such person has beneficial
               ownership (as such term is defined in Rule 13d-3 promulgated
               under the Exchange Act) by a number that is greater than 1% of
               the then outstanding shares of LCB Common Stock or BANCORP Common
               Stock if, after giving effect to such increase, such Person owns,
               beneficially, more than 5% of the outstanding shares of LCB
               Common Stock or BANCORP Common Stock, or (ii) any "group" (as
               such term is defined under the Exchange Act) shall have been
               formed which beneficially owns, or has the right to acquire
               beneficial ownership of, more than 5% of the then outstanding
               shares of LCB Common Stock or BANCORP Common Stock; or

        (c)    The approval by LCB's or BANCORP'S shareholders, or the
               consummation by LCB or BANCORP, of any Acquisition Transaction as
               described in Subsection (a) of this Paragraph within a period of
               two hundred seventy (270) days following: (i) the termination of
               this Agreement by BANCORP pursuant to Sections 8.1.1, 8.1.3,
               8.1.5, 8.1.7, 8.1.8, or 8.1.11; or (ii) the termination of this
               Agreement by LCB pursuant to Section 8.1.1, 8.1.3, 8.1.4, 8.1.6,
               8.1.9, or 8.1.10.

        (d)    An Acquisition Transaction shall not mean any transaction
               identified above with an entity identified in writing by BANCORP
               or LCB prior to the date of the Agreement.

        "Acquisition Proposal" shall have the meaning given such term in Section
6.2.5.

        "Affected Party" shall have the meaning given to it in Section 5.7.

        "Affiliate" or "affiliate" shall mean, with respect to any other Person,
        any Person that, directly or indirectly, controls or is controlled by or
        is under common control with such Person.


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<PAGE>   383

        "Affiliate Agreements" shall have the meaning given to such term in
Section 5.3.3.

        "BANK" shall mean Western Sierra National Bank.

        "BANCORP" shall mean Western Sierra Bancorp.

        "BANCORP Average Trading Price" shall mean the average trading price for
BANCORP Common Stock as determined for a thirty calendar day period prior to the
Determination Date. However, if the BANCORP Average Trading Price is above
$20.00 per share, the BANCORP Average Trading Price shall be $20.00 per share.
If the BANCORP Average Trading Price is below $17.00 per share, the BANCORP
Average Trading Price shall be $17.00.

        "BANCORP Collateralizing Real Estate" shall have the meaning given to
such term in Section 4.19.1.

        "BANCORP Common Stock" shall mean the common stock, no par value per
share, of BANCORP.

        "BANCORP Fairness Opinion" shall have the meaning given to such term in
Section 7.2.9.

        "BANCORP Filings" shall have the meanings given such term in Section
4.6.1.

        "BANCORP Financial Statements" shall mean the financial statements of
BANCORP for the year ended December 31, 1997.

        "BANCORP Market Value Per Share" shall mean the last trade of BANCORP
Common Stock prior to the Effective Time.

        "BANCORP Material Adverse Event" shall have the meaning given to such
term in Section 8.1.9

        "BANCORP Properties" shall have the meaning given to such term in
Section 4.19.1.

        "BANCORP Stock Plans" shall have the meaning set forth in Section 4.5.

        "Benefit Arrangement" shall have the meaning given such term in Section
3.21.4.

        "BHCA" shall mean the Bank Holding Company Act of 1956, as amended.

        "Business Day" shall mean any day, other than a Saturday, Sunday or any
other day, such as a legal holiday, on which California state banks in
California are not open for substantially all their banking business.

        "California Corporations Code" shall mean the General Corporation Law of
the State of California.

        "California Financial Code" shall mean the Financial Code of the State
of California.


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<PAGE>   384

        "CDFI" shall mean the California Department of Financial Institutions.

        "Classified Assets" shall have the meaning given to such term in Section
6.1.15.

        "Closing" shall have the meaning given to such term in Section 2.1.

        "Closing Date" shall have the meaning given to such term in Section 2.1.

        "Closing Schedules" shall have the meaning given to such term in Section
5.7.

        "Commissioner" shall mean the Commissioner of Financial Institutions of
the State of California.

        "Conversion Rate" shall mean the result of a fraction, the numerator of
which is the Per Share Merger Price, and the denominator of which is the BANCORP
Average Trading Price.

        "Default" shall mean, as to any party to this Agreement, a failure by
such party to perform, in any material respect, any of the agreements or
covenants of such party contained in Articles 5 or 6.

        "Determination Date" shall mean the last business day of the calendar
month immediately preceding the calendar month in which the Effective Time
occurs.

        "Director Shareholder Agreement" shall have the meaning given such term
in Section 7.2.10.

        "Dissenting Shares" shall mean shares of LCB Common Stock or BANCORP
Common Stock which come within all of the descriptions set forth in
Subparagraphs (1), (2), (3) and (4) of Paragraph (a) of Section 1300 of the
California Corporations Code.

        "Dissenting Shareholder Notices" shall mean the notice required to be
given to record holders of Dissenting Shares pursuant to Paragraph (a) of
Section 1301 of the California Corporations Code.

        "Effective Time" shall have the meaning given such term in Section 2.1.

        "Employee Plan" shall have the meaning given such term in Section
3.21.3.

        "Environmental Laws" shall mean and include any and all laws, statutes,
ordinances, rules, regulations, orders, or determinations of any Governmental
Entity pertaining to health or to the environment, including, without
limitation, the Clean Air Act, as amended, the Comprehensive Environmental
Response, Compensation and Liability Act of 1980, as amended, the Federal Water
Pollution Control Act Amendments, the Occupational Safety and Health Act of
1970, as amended, the Resource Conservation and Recovery Act of 1976, as amended
("RCRA"), the Hazardous Materials Transportation Act of 1975, as amended, the
Safe Drinking Water Act, as amended, and the Toxic Substances Control Act, as
amended.

        "Equity Securities" shall have the meaning given to such term in the
Exchange Act.


                                        4

<PAGE>   385

        "ERISA" shall mean the Employee Retirement Income Security Act of 1974,
as amended.

        "Exchange Act" shall mean the Securities Exchange Act of 1934, as
amended.

        "Exchange Agent" shall mean Western Sierra National Bank, or such other
Person as BANCORP shall have appointed to perform the duties set forth in
Section 2.8.

        "Exchange Offer" shall mean the commencement (as such term is defined in
Rule 14d-2 under the Exchange Act) of an exchange offer or the filing by any
Person of a registration statement under the Securities Act with respect to an
exchange offer to purchase any shares of LCB Common Stock such that, upon
consummation of such offer, such Person would own or control 15% or more of the
then outstanding shares of LCB Common Stock.

        "FDIC" shall mean the Federal Deposit Insurance Corporation.

        "Federal Reserve Board" shall mean the Board of Governors of the Federal
Reserve System.

        "GAAP" shall mean generally accepted accounting principles.

        "Governmental Entity" shall mean any court, federal, state, local or
foreign government or any administrative agency or commission or other
governmental authority or instrumentality whatsoever.

        "Hazardous Substances" shall have the meaning given such term in Section
3.23.4.

        "IRC" shall mean the Internal Revenue Code of 1986, as amended.

        "Joint Proxy Statement/Prospectus" shall have the meaning given to such
term in Section 3.7.2.

        "Knowledge" shall mean, with respect to any representation or warranty
contained in this Agreement; the actual knowledge, after reasonable inquiry, of
any director or executive officer of LCB or BANCORP.

        "Last Regulatory Approval" shall mean the final Requisite Regulatory
Approval required, from any Governmental Entity under applicable federal laws of
the United States and laws of any state having jurisdiction over the Merger, to
permit the parties to consummate the Merger.

        "LCB" shall mean Lake Community Bank.

        "LCB Certificates" shall have the meaning given such term in Section
2.8.1.

        "LCB Collateralizing Real Estate" shall have the meaning given to such
term in Section 3.23.1.

        "LCB Common Stock" shall mean the common stock, no par value, of LCB.


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<PAGE>   386

        "LCB's Costs Associated With the Transaction" shall mean all legal,
accounting and professional costs incurred or to be incurred by LCB for the
transaction up to the Closing Date (including investment banking fees) which
have not been expensed by LCB by the Determination Date and one-half of the
taxes identified with the termination of the Employment Agreement/Change of
Control Agreement with Gary Nordine.

        "LCB Fairness Opinion" shall have the meaning given to such term in
Section 7.3.7.

        "LCB Filings" shall have the meaning given such term in Section 3.6.1.

        "LCB Financial Statements" shall have the meaning given to such term in
Section 3.7.3.

        "LCB Material Adverse Event" shall have the meaning given to such term
in Section 8.1.8.

        "LCB Properties" shall have the meaning given to such term in Section
3.23.1.

        "LCB State Documents" shall have the meaning given to such term in
Section 3.6.2.

        "LCB Stock Options" shall mean any options to purchase any shares of LCB
Common Stock or any other Equity Securities of LCB granted on or prior to the
Effective Time, whether pursuant to the LCB Stock Option Plan or otherwise.

        "LCB Stock Option Plan" shall mean LCB's written Stock Option Plan as
described in Schedule 3.5 and 3.24 hereto.

        "LMC" shall mean LMC Merger Company.

        "Material Adverse Effect" shall mean a material adverse effect: (i) on
the business, assets, results of operations, financial condition or prospects of
a Person and its subsidiaries, if any, taken as a whole (unless specifically
indicated otherwise); or (ii) on the ability of a Person that is a party to this
Agreement to perform its obligations under this Agreement or to consummate the
transactions contemplated by this Agreement.

        "Material Adverse Event" shall have the meaning given to such term in
Section 8.1.8.

        "Merger" shall have the meaning set forth in Section 2.1.

        "Merger Agreement" shall have the meaning given to such term in Section
2.1.

        "New Certificates" shall have the meaning given to such term in Section
2.8.1.

        "OCC" shall mean Office of the Comptroller of the Currency.

        "OREO" shall have the meaning given to such term in Section 3.13.

        "Perfected Dissenting Shares" shall mean Dissenting Shares as to which
the recordholder has made demand on LCB or BANCORP in accordance with Paragraph
(b) of Section 1301 of the California Corporations Code and has not withdrawn
such demand prior to the Effective Time.


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<PAGE>   387

        "Per Share Merger Price" shall mean the sum of the total shareholders'
equity for LCB as of the Determination Date (after a third party review to
determine the adequacy of LCB's loan loss reserves as provided under Section
7.2.12 and the expensing of LCB's Costs Associated With The Transaction)
multiplied by 1.75 with the total product divided by the total number of shares
of LCB Common Stock outstanding at the Closing Date. The calculation of Per
Share Merger Price shall be performed by Perry-Smith & Co. or such other party
agreed to by BANCORP and LCB.

        "Persons" or "persons" shall mean an individual, corporation,
partnership, limited liability company, joint venture, trust or unincorporated
organization, Governmental Entity or any other legal entity whatsoever.

        "Registration Statement" shall have the meaning given to such term in
Section 3.7.2.

        "Regulatory Authority" shall mean any Governmental Entity, the approval
of which is legally required for consummation of the Merger.

        "Requisite Regulatory Approvals" shall have the meaning set forth in
Section 7.1.2.

        "Returns" shall mean all returns, declarations, reports, statements, and
other documents required to be filed with respect to federal, state, local and
foreign Taxes, and the term "Return" means any one of the foregoing Returns.

        "SEC" shall mean the Securities and Exchange Commission.

        "Securities Act" shall mean the Securities Act of 1933, as amended.

        "Subsidiary" shall mean, with respect to any corporation (the "parent"),
any other corporation, association or other business entity of which more than
50% of the shares of the Voting Stock are owned or controlled, directly or
indirectly, by the parent or by one or more Subsidiaries of the parent, or by
the parent and one or more of its Subsidiaries.

        "Superior Proposal" shall have the meaning given to such term in Section
6.2.5.

        "Surviving Corporation" shall have the meaning given to such term in
Section 2.1.

        "Taxes" shall mean all federal, state, local and foreign net income,
gross income, gross receipts, sales, use, ad valorem, transfer, franchise,
profits, license, lease, service, service use, withholding, payroll, employment,
excise, severance, stamp, occupation, premium, property, windfall profits,
customs, duties, or other taxes, together with any interest and any penalties,
additions to tax, or additional amounts with respect thereto, and the term "Tax"
means any one of the foregoing Taxes.

        "Tax Filings" shall mean any applications, reports, statements or other
Returns required to be filed with any local, state or federal Governmental
Entity before the Merger may become


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<PAGE>   388

effective, including, but not limited to, any filing required to be made with
the California Franchise Tax Board to obtain a Tax Clearance Certificate for the
Merger.

        "Tender Offer" shall mean the commencement (as such term is defined in
Rule 14d-2 under the Exchange Act) of a tender offer or the filing by any person
of a registration statement under the Securities Act with respect to, a tender
offer to purchase any shares of LCB Common Stock or BANCORP Common Stock such
that, upon consummation of such offer, such person would own or control 15% or
more of the then outstanding voting securities of LCB or BANCORP.

        "Understanding" shall have the meaning set forth in Section 6.1.5.

        "Voting Securities" or "Voting Stock" shall mean the stock or other
securities or any other interest entitling the holders thereof to vote in the
election of the directors, trustees or Persons performing similar functions of
the Person in question, including, without limitation, nonvoting securities that
are convertible or exchangeable into voting securities, but shall not include
any stock or other interest so entitling the holders thereof to vote only upon
the happening of a contingency (other than a conversion or exchange thereof into
voting securities), whether or not such contingency has occurred.

                              ARTICLE 2. THE MERGER

        Section 2.1 THE MERGER. Subject to the terms and conditions of this
Agreement, as promptly as practicable following the receipt of the Last
Regulatory Approval and the expiration of all applicable waiting periods, LCB
shall be merged with LMC, with LCB being the Surviving Corporation of the
merger, all pursuant to the Agreement of Merger attached to this Agreement as
Exhibit 2.1 (the "Merger Agreement") and in accordance with the applicable
provisions of the California Financial Code and the California Corporations Code
(the "Merger"). The closing of the Merger (the "Closing") shall take place at a
location and time and Business Day to be designated by BANCORP and reasonably
concurred to by LCB (the "Closing Date") which shall not, however, be later than
thirty (30) days after receipt of the Last Regulatory Approval and expiration of
all applicable waiting periods. The Merger shall be effective when the Merger
Agreement (together with any other documents required by law to effectuate the
Merger) shall have been filed with the Secretary of State of the State of
California. When used in this Agreement, the term "Effective Time" shall mean
the time of filing of the Merger Agreement with the Secretary of State, and
"Surviving Corporation" shall mean LCB.

        Section 2.2 EFFECT OF MERGER. By virtue of the Merger and at the
Effective Time, all of the rights, privileges, powers and franchises and all
property and assets of every kind and description of LCB and LMC shall be vested
in and be held and enjoyed by the Surviving Corporation, without further act or
deed, and all the estates and interests of every kind of LCB and LMC, including
all debts due to either of them, shall be as effectively the property of the
Surviving Corporation as they were of LCB and LMC immediately prior to the
Effective Time, and the title to any real estate vested by deed or otherwise in
either LCB or LMC shall not revert or be in any way impaired by reason of the
Merger; and all rights of creditors and liens upon any property of LCB and LMC
shall be preserved unimpaired and all debts, liabilities and duties of LCB and
LMC shall be debts, liabilities and duties of the Surviving Corporation and may
be enforced against it to the same extent


                                        8

<PAGE>   389

as if such debts, liabilities and duties had been incurred or contracted by it,
and none of such debts, liabilities or duties shall be expanded, increased,
broadened or enlarged by reason of the Merger.

        Section 2.3 ARTICLES OF INCORPORATION. The Articles of Incorporation of
LCB in effect immediately prior to the Effective Time shall be the Articles of
Incorporation of the Surviving Corporation until amended and the name of the
Surviving Corporation shall be "Lake Community Bank."

        Section 2.4 CONVERSION OF LMC STOCK. The authorized and issued capital
stock of LMC, all of which shall be owned by BANCORP, immediately prior to the
Effective Time, on and after the Effective Time, pursuant to the Merger
Agreement and without any further action on the part of BANCORP or LMC shall be
exchanged on a one-for-one basis for shares of common stock of the Surviving
Corporation.

        Section 2.5 CONVERSION OF LCB STOCK OPTIONS. At the Effective Time, all
outstanding rights with respect to LCB Common Stock pursuant to stock options
under the LCB Stock Option Plan shall be converted into and become equivalent
rights with respect to BANCORP Common Stock at the applicable Conversion Rate
with a corresponding adjustment in the option price, and BANCORP shall assume
each LCB Stock Option in accordance with the terms of LCB Stock Option Plans and
the stock option agreement by which it is evidenced.

        Section 2.6 CONVERSION OF LCB COMMON STOCK.

               2.6.1 Except as provided in Sections 2.6.2 and 2.7, each share of
LCB Common Stock shall be converted at the Effective Time into and become the
right to receive that number of shares of duly authorized, validly issued, fully
paid and nonassessable shares of BANCORP Common Stock equal to the Conversion
Rate, subject to adjustment, if any, as provided in any other section of this
Agreement; provided, however, that the shares held by any shareholder who
properly exercises dissenters' rights provided under the California Corporations
Code, shall not be so converted and in lieu of such conversion shall be treated
in accordance with the provisions of the California Corporations Code.

               2.6.2 The Conversion Rate shall be further appropriately adjusted
to reflect any recapitalization, reorganization, reclassification, split-up,
merger, consolidation, exchange, stock or other dividend or distribution, made,
declared or effective with respect to the BANCORP Common Stock between the date
of this Agreement and the Effective Time.

        Section 2.7 FRACTIONAL SHARES. No fractional shares of BANCORP Common
Stock shall be issued in the Merger. In lieu thereof, each holder of LCB Common
Stock who would otherwise be entitled to receive a fractional share shall
receive an amount in cash equal to the product (rounded to the nearest
hundredth) obtained by multiplying (a) BANCORP Market Value Per Share by (b) the
fraction of a share of BANCORP Common Stock to which such holder would otherwise
be entitled. No such holder shall be entitled to dividends or other rights in
respect of any such fraction.

        Section 2.8 EXCHANGE PROCEDURES. On or as soon as practicable after the
Effective Time, (i) BANCORP will deliver to the Exchange Agent: (i) certificates
representing the number of shares of BANCORP Common Stock issuable in the
Merger; and (ii) cash for the payout of fractional shares.


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<PAGE>   390

               2.8.1 Upon surrender to the Exchange Agent for cancellation of
one or more certificates for shares of LCB Common Stock ("LCB Certificates"),
accompanied by a duly executed letter of transmittal in proper form, the
Exchange Agent shall, as promptly as practicable thereafter, deliver to each
holder of such surrendered LCB Certificates, certificates representing the
appropriate number of shares of BANCORP Common Stock ("New Certificates") and/or
checks for payment of cash in lieu of fractional shares, in respect of the LCB
Certificates. In no event shall the holders of LCB Certificates be entitled to
receive interest on cash amounts due them hereunder.

               2.8.2 Until an LCB Certificate has been surrendered and exchanged
as herein provided, each share of LCB Common Stock represented by such LCB
Certificate shall represent, on and after the Effective Time, the right to
receive the Conversion Rate into which each such share of LCB Common Stock shown
thereon has been converted as provided by Section 2.6 including the right to
vote such shares of BANCORP Common Stock. No dividends or other distributions
that are declared on any shares of BANCORP Common Stock into which any shares of
LCB Common Stock have been converted at the Effective Time shall be paid to the
holder of such LCB shares until the LCB Certificates evidencing such LCB shares
have been surrendered in exchange for New Certificates in the manner herein
provided, but upon such surrender, such dividends or other distributions, from
and after the Effective Time, will be paid to such holders. In no event shall
the holders entitled to receive such dividends or other distributions be
entitled to receive interest on such dividends or other distributions.

               2.8.3 No transfer taxes shall be payable by any shareholder in
respect of the issuance of New Certificates, except that if any New Certificate
is to be issued in a name other than that in which the LCB Certificates
surrendered shall have been registered, it shall be a condition of such issuance
that the holder requesting such issuance shall properly endorse the certificate
or certificates and shall pay to BANCORP or the Exchange Agent any transfer
taxes payable by reason thereof, or of any prior transfer of such surrendered
certificate, or establish to the satisfaction of BANCORP or the Exchange Agent
that such taxes have been paid or are not payable.

               2.8.4 Any BANCORP Common Stock or cash delivered to the Exchange
Agent and not distributed pursuant to this Section 2.8 at the end of nine months
from the Effective Time, shall be returned to BANCORP, in which event the
Persons entitled thereto shall look only to BANCORP for payment thereof.

               2.8.5 Notwithstanding anything to the contrary set forth in
Sections 2.8.2 and 2.8.3 hereof, if any holder of LCB Common Stock shall be
unable to surrender such holder's LCB Certificates because such LCB Certificates
have been lost or destroyed, such holder may deliver in lieu thereof an
affidavit and indemnity bond in form and substance and with surety satisfactory
to the Exchange Agent and BANCORP.

               2.8.6 The Exchange Agent shall not be entitled to vote or
exercise any rights of ownership with respect to the shares of BANCORP Common
Stock held by it from time to time hereunder, except that it shall receive and
hold all dividends or other distributions paid or distributed with respect to
such shares of BANCORP Common Stock for the account of the Persons entitled
thereto.

               2.8.7 After the Effective Time, there shall be no further
registration of transfers of the shares of LCB Common Stock which were
outstanding immediately prior to the Effective Time.


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<PAGE>   391

If, after the Effective Time, LCB Certificates representing such shares of LCB
Common Stock are presented to BANCORP, they shall be canceled and exchanged for
BANCORP Common Stock as provided in this Article 2.

        Section 2.9 BOARD OF DIRECTORS OF LCB AND BANCORP FOLLOWING THE
EFFECTIVE TIME. At the Effective Time three directors of LCB named on Schedule
2.9 shall be appointed as directors of BANCORP to serve until the next annual
meeting of shareholders of BANCORP and until such successors are elected and
qualified. At the Effective Time, the Board of Directors of LCB shall be nine in
number, three of which will be selected by BANCORP, and six of which will be
current directors of LCB. The six existing directors of LCB shall serve as
directors of LCB for at least a two year period after the Effective Time.

                ARTICLE 3. REPRESENTATIONS AND WARRANTIES OF LCB

LCB represents and warrants to BANCORP as follows:

        Section 3.1 ORGANIZATION; CORPORATE POWER; ETC. LCB is a California
state-chartered banking institution duly organized, validly existing and in good
standing under the laws of the State of California and has all requisite
corporate power and authority to own, lease and operate its properties and
assets and to carry on its business substantially as it is being conducted on
the date of this Agreement. LCB has all requisite corporate power and authority
to enter into this Agreement and, subject to obtaining all Requisite Regulatory
Approvals, LCB will have the requisite corporate power and authority to perform
its obligations hereunder with respect to the consummation of the transactions
contemplated hereby. LCB is authorized by the CDFI to conduct a general banking
business. LCB is not a member of the Federal Reserve System. LCB's deposits are
insured by the FDIC in the manner and to the full extent provided by law. LCB
maintains and operates branch offices only in the State of California. Neither
the scope of the business of LCB, or any Subsidiary of LCB, nor the location of
any of their respective properties, requires that LCB or any of its respective
Subsidiaries be licensed or qualified to conduct business in any jurisdiction
other than the State of California, where the failure to be so licensed and
qualified would have a Material Adverse Effect on LCB taken as a whole.

        Section 3.2 LICENSES AND PERMITS. Except as disclosed on Schedule 3.2,
LCB and its Subsidiaries have all material licenses, certificates, franchises,
rights and permits that are necessary for the conduct of their respective
businesses, and such licenses are in full force and effect, except for any
failure to be in full force and effect that would not, individually or in the
aggregate, have a Material Adverse Effect on LCB or on the ability of LCB to
consummate the transactions contemplated by this Agreement. The properties,
assets, operations and businesses of LCB and those of its Subsidiaries, are and
have been maintained and conducted, in all material respects, in compliance with
all applicable licenses, certificates, franchises, rights and permits.

        Section 3.3 SUBSIDIARIES. Other than as set forth on Schedule 3.3, there
is no corporation, partnership, joint venture or other entity in which LCB owns,
directly or indirectly (except as pledgee pursuant to loans or stock or other
interest held as the result of or in lieu of foreclosure pursuant to pledge or
other security arrangement) any equity or other voting interest or position.


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<PAGE>   392



        Section 3.4 AUTHORIZATION OF AGREEMENT; NO CONFLICTS.

               3.4.1 The execution and delivery of this Agreement and the Merger
Agreement by LCB, and the consummation of the transactions contemplated hereby
and thereby, have been duly authorized by all necessary corporate action on the
part of LCB, subject only to the approval of this Agreement, the Merger
Agreement and the Merger by LCB's shareholders. This Agreement has been duly
executed and delivered by LCB and constitutes a legal, valid and binding
obligation of LCB, enforceable in accordance with its terms, except as the
enforceability thereof may be limited by bankruptcy, insolvency, moratorium or
other similar laws affecting the rights of creditors generally and by general
equitable principles. The Merger Agreement, upon the receipt of all Requisite
Regulatory Approvals and the due execution and filing of such Merger Agreement
in accordance with the applicable provisions of the California Corporations
Code, will constitute a legal, valid and binding obligation of LCB, enforceable
in accordance with its terms, except as the enforceability thereof may be
limited by bankruptcy, insolvency, moratorium or other similar laws affecting
the rights of creditors generally and by general equitable principles.

               3.4.2 Except as disclosed on Schedule 3.4, the execution and
delivery of this Agreement and the Merger Agreement, and the consummation of the
transactions contemplated hereby and thereby, do not and will not conflict with,
or result in any violation of or default or loss of a material benefit under,
any provision of the Articles of Incorporation or Bylaws of LCB, or except for
the necessity of obtaining Requisite Regulatory Approvals and approval of the
shareholders of LCB, any material mortgage, indenture, lease, agreement or other
material instrument or any permit, concession, grant, franchise, license,
judgment, order, decree, statute, law, ordinance, rule or regulation applicable
to LCB or any of its assets or properties, other than any such conflict,
violation, default or loss which (i) will not have a Material Adverse Effect on
LCB, or on BANCORP following consummation of the Merger; or (ii) will be cured
or waived prior to the Effective Time. No material consent, approval, order or
authorization of, or registration, declaration or filing with, any Governmental
Entity is required in connection with the execution and delivery of this
Agreement or the Merger Agreement by LCB or the performance by LCB of its
obligations hereunder and thereunder, except for (a) filings required in order
to obtain the Requisite Regulatory Approvals; (b) the filing and approval of the
Merger Agreement with the Secretary of the State of California; and (c) Tax
Filings.

        Section 3.5 CAPITAL STRUCTURE. The authorized capital stock of LCB
consists of 20,000,000 shares of LCB Common Stock, no par value per share and
10,000,000 shares of LCB preferred stock. On the date of this Agreement,
1,263,296 shares of LCB Common Stock were outstanding, 182,850 shares of LCB
Common Stock were reserved for issuance pursuant to outstanding LCB Stock
Options under the LCB Stock Option Plan, and no shares of LCB preferred stock
were outstanding or reserved for issuance by LCB. All outstanding shares of LCB
Common Stock are validly issued, fully paid and nonassessable and do not possess
any preemptive rights and were not issued in violation of any preemptive rights
or any similar rights of any Person. Except for the LCB Stock Options described
on Schedule 3.5 to this Agreement, LCB does not have outstanding any options,
warrants, calls, rights, commitments, securities or agreements of any character
to which LCB is a party or by which it is bound obligating LCB to issue, deliver
or sell, or cause to be issued, delivered or sold, additional shares of capital
stock of LCB or obligating LCB to grant, extend or enter into any such option,
warrant, call, right, commitment or agreement.


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<PAGE>   393

        Section 3.6 LCB FILINGS.

               3.6.1 Since January 1, 1995, LCB and its Subsidiaries have filed
all reports, registrations and statements, together with any amendments required
to be made with respect thereto, that were required to be filed with (a) the
Federal Reserve Board or any Federal Reserve Bank; (b) the Commissioner; (c) the
FDIC; and (d) any other applicable federal, state or local governmental or
regulatory authority. All such reports, registrations and filings, and all
reports sent to LCB's shareholders during the three-year period ended December
31, 1997 (whether or not filed with any Regulatory Authority), are collectively
referred to as the "LCB Filings. Except to the extent prohibited by law, copies
of the LCB Filings have been made available to BANCORP. As of their respective
filing or mailing dates, each of the past LCB Filings (a) was true and complete
in all material respects (or was amended so as to be so promptly following
discovery of any discrepancy); and (b) complied in all material respects with
all of the statutes, rules and regulations enforced or promulgated by the
governmental or regulatory authority with which it was filed (or was amended so
as to be so promptly following discovery of any such noncompliance) and none
contained any untrue statement of a material fact or omitted to state a material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances under which they were made, not misleading. The
LCB Financial Statements, together with the financial statements contained in
the LCB Filings have been prepared in accordance with GAAP, or applicable
regulatory accounting principles, applied on a consistent basis during the
periods involved (except as may be indicated in the notes thereto) and fairly
present (subject, in the case of the unaudited statements, to recurring
adjustments normal in nature and amount) the financial position of LCB as of the
dates thereof and the results of its operations, cash flows and changes in
shareholders' equity for the periods then ended.

               3.6.2 LCB has filed each report, schedule and amendments to each
of the foregoing since January 1, 1995 that LCB was required to file with the
Commissioner and the FDIC (the "LCB State Documents"), all of which have been
made available to BANCORP. As of their respective dates, the LCB State Documents
complied in all material respects with the applicable requirements of the
California Financial Code and the Federal Deposit Insurance Act, as the case may
be, and the rules and regulations of the Commissioner and the FDIC thereunder
applicable to such LCB State Documents, and none of the LCB State Documents
contained any untrue statement of a material fact or omitted to state a material
fact required to be stated therein or necessary to make the statements therein,
in light of the circumstances under which they were made, not misleading. The
financial statements of LCB included in the LCB Filings comply in all material
respects with applicable regulatory accounting requirements and with the
published rules and regulations of the Commissioner (as applicable) with respect
thereto, and have been prepared in accordance with GAAP, or applicable
regulatory accounting principles, applied on a consistent basis during the
periods involved (except as may be indicated in the notes thereto or, in the
case of the unaudited statements, as permitted by regulations of the
Commissioner) and fairly present (subject, in the case of the unaudited
statements, to recurring adjustments normal in nature and amount) the financial
position of LCB as of the dates thereof and the results of its operations and
cash flows or changes in financial position for the periods then ended.

        Section 3.7 ACCURACY OF INFORMATION SUPPLIED.

               3.7.1 No representation or warranty of LCB contained herein or
any statement, schedule, exhibit or certificate given or to be given by or on
behalf of LCB or any of its Subsidiaries,


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<PAGE>   394

to BANCORP in connection herewith and none of the information supplied or to be
supplied by LCB or its Subsidiaries to BANCORP hereunder contains or will
contain any untrue statement of material fact or omit to state any material fact
required to be stated therein or necessary in order to make the statements
therein, in light of the circumstances under which they are made, not
misleading.

               3.7.2 None of the information supplied or to be supplied by LCB
or relating to LCB which is included or incorporation by reference in (i) the
Registration Statement on Form S-4 to be filed with the SEC by BANCORP in
connection with the issuance of shares of BANCORP Common Stock in the Merger
(including the Joint Proxy Statement of BANCORP and LCB and the Prospectus of
BANCORP ("Joint Proxy Statement/Prospectus") constituting a part thereof, the
"Registration Statement") will, at the time the Registration Statement becomes
effective under the Securities Act, contain any untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary
to make the statements therein, in light of the circumstances under which they
were made, not misleading; (ii) the Joint Proxy Statement/ Prospectus and any
amendment or supplement thereto will, at all times from the date of mailing to
shareholders of LCB through the date of the meeting of shareholders of LCB to be
held in connection with the Merger, contain any untrue statement of a material
fact or omit to state a material fact required to be stated therein or necessary
to make the statements therein, in light of the circumstances under which they
were made, not misleading; and (iii) the applications and forms to be filed with
securities or "blue sky" authorities, self regulatory authorities, or any
Governmental Entity in connection with the Merger, the issuance of any shares of
BANCORP Common Stock in connection with the Merger, or any Requisite Regulatory
Approvals will, at the time filed or at the time they become effective, contain
any untrue statement of a material fact or omit to state any material fact
required to be stated therein or necessary to make the statements therein, in
light of the circumstances under which they were made, not misleading. The Joint
Proxy Statement/Prospectus (except for such portions thereof that relate only to
BANCORP and its Subsidiaries) will comply in all material respects with the
provisions of the Exchange Act and the rules and regulations thereunder.

               3.7.3 LCB has or will deliver to BANCORP copies of: (a) the
audited balance sheets of LCB and its Subsidiaries as of December 31, 1997, 1996
and 1995 and the related statements of income, changes in shareholders' equity
and cash flows for the years then ended and the related notes to such financial
statements, all as audited by Perry-Smith & Company, independent public
accountants (the "LCB Financial Statements"), and LCB will hereafter until the
Closing Date deliver to BANCORP copies of additional financial statements of LCB
as provided in Sections 5.1.1(iii) and 6.1.11(iii). The LCB Financial Statements
have been prepared (and all of said additional financial statements will be
prepared) in accordance with GAAP, or applicable regulatory accounting
principles, applied on a consistent basis during the periods involved (except as
may be indicated in the notes thereto) consistently followed throughout the
periods covered by such statements, and present (and, when prepared, will
present) fairly the financial position of LCB and its Subsidiaries as of the
respective dates indicated and the results of operations, cash flows and changes
in shareholders' equity at the respective dates and for the respective periods
covered by such financial statements (subject, in the case of the unaudited
statements, to recurring adjustments normal in nature and amount). In addition,
LCB has delivered to BANCORP copies of all management or other letters delivered
to LCB by its independent accountants in connection with any of the LCB
Financial Statements or by such accountants or any consultant regarding the
internal controls or internal compliance procedures and systems of LCB issued at
any time since January 1, 1995, and


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<PAGE>   395

will make available for inspection by BANCORP or its representatives, at such
times and places as BANCORP may reasonably request, reports and working papers
produced or developed by such accountants or consultants.

        Section 3.8 COMPLIANCE WITH APPLICABLE LAWS. Except as disclosed on
Schedule 3.8, to the best of LCB's Knowledge, the respective businesses of LCB
and its Subsidiaries are not being conducted in violation of any law, ordinance
or regulation, except for violations which individually or in the aggregate
would not have a Material Adverse Effect on LCB, or BANCORP at or following the
Effective Time. Except as set forth in Schedule 3.8, no investigation or review
by any Governmental Entity with respect to LCB is pending or, to the Knowledge
of LCB threatened, nor has any Governmental Entity indicated to LCB an intention
to conduct the same.

        Section 3.9 LITIGATION. Except as set forth in Schedule 3.9, there is no
suit, action or proceeding or investigation pending, or to the Knowledge of LCB
threatened against or affecting LCB or any of its Subsidiaries which, if
adversely determined, would have a Material Adverse Effect on LCB or its
Subsidiaries; nor is there any judgment, decree, injunction, rule or order of
any Governmental Entity or arbitrator outstanding against LCB or any of its
Subsidiaries that has, or which, insofar as reasonably can be foreseen, in the
future would have, any such Material Adverse Effect. Schedule 3.9 contains a
true, correct and complete list, including identification of the applicable
insurance policy covering such litigation, if any, subject to reservation of
rights, if any, the applicable deductible and the amount of any reserve
therefor, of all pending litigation in which LCB or any of its Subsidiaries is a
named party, and except as disclosed on Schedule 3.9, all of the litigation
shown on such Schedule is adequately covered by insurance in force, except for
applicable deductibles, or has been adequately reserved for in accordance with
LCB's prior business practices.

        Section 3.10 AGREEMENTS WITH BANKING AUTHORITIES. Neither LCB nor any
Subsidiary of LCB is a party to any written agreement or memorandum of
understanding with, or order or directive from, any Governmental Entity.

        Section 3.11 INSURANCE. LCB and its Subsidiaries have in full force and
effect policies of insurance with respect to their assets and businesses against
such casualties and contingencies and in such amounts, types and forms as are
customarily appropriate for their businesses, operations, properties and assets.
Schedule 3.11 contains a list of all policies of insurance and bonds carried and
owned by LCB or any Subsidiary. None of LCB or any of its Subsidiaries is in
default under any such policy of insurance or bond such that it can be canceled
and all material claims thereunder have been filed in timely fashion. LCB and
its Subsidiaries have filed claims with, or given notice of claim to, their
insurers or bonding companies in timely fashion with respect to all material
matters and occurrences for which they believe they have coverage.

        Section 3.12 TITLE TO ASSETS OTHER THAN REAL PROPERTY. LCB and its
Subsidiaries have good and marketable title to all their properties and assets
(other than real property which is the subject to Section 3.13), owned or leased
by LCB or any of its Subsidiaries, free and clear of all mortgages, liens,
encumbrances, pledges or charges of any kind or nature except as disclosed on
Schedule 3.12 and except for: (a) encumbrances as set forth in the LCB Financial
Statements; (b) liens for current Taxes not yet due which have been fully
reserved for; and (c) encumbrances, if any, that are not substantial in
character, amount or extent and do not detract materially from the value, or
interfere with present use or the sale or other disposition of the property
subject thereto or affected thereby.


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<PAGE>   396

All such properties and assets are, and require only routine maintenance to keep
them, in good working condition, normal wear and tear excepted.

        Section 3.13 REAL PROPERTY. Schedule 3.13 is an accurate list and
general description of all real property owned or leased by LCB or any of its
Subsidiaries, including Other Real Estate Owned ("OREO"). Each of LCB and its
respective Subsidiaries has good and marketable title to the real properties
that it owns, as described in such Schedule, free and clear of all mortgages,
covenants, conditions, restrictions, easements, liens, security interests,
charges, claims, assessments and encumbrances, except for (a) rights of lessors,
lessees or sublessees in such matters as are reflected in a written lease; (b)
current Taxes (including assessments collected with Taxes) not yet due and
payable; (c) encumbrances, if any, that are not substantial in character, amount
or extent and do not materially detract from the value, or interfere with
present use, or the ability of LCB to dispose, of the property subject thereto
or affected thereby; and (d) other matters as described in Schedule 3.13. LCB
and its Subsidiaries have valid leasehold interests in the leaseholds they
respectively hold, free and clear of all mortgages, liens, security interest,
charges, claims, assessments and encumbrances, except for (a) claims of lessors,
co-lessees or sublessees in such matters as are reflected in a written lease;
(b) title exceptions affecting the fee estate of the lessor under such leases;
and (c) other matters as described in Schedule 3.13. To the best of LCB's
Knowledge, the activities of LCB and its Subsidiaries with respect to all real
property owned or leased by them for use in connection with their operations are
in all material respects permitted and authorized by applicable zoning laws,
ordinances and regulations and all laws and regulations of any Governmental
Entity. Except as set forth in Schedule 3.13, LCB and its Subsidiaries enjoy
quiet possession under all material leases to which they are the lessees and all
of such leases are valid and in full force and effect, except as the
enforceability thereof may be limited by bankruptcy, insolvency, moratorium or
other similar laws affecting the rights of creditors generally and by general
equitable principles. The buildings and improvements on real properties owned or
leased by LCB or any of its Subsidiaries are in good condition and repair, and
do not require more than normal and routine maintenance, to keep them in such
condition, normal wear and tear excepted.

        Section 3.14 TAXES.

               3.14.1 FILING OF RETURNS. Except as set forth on Schedule 3.14.1,
LCB and its Subsidiaries have duly prepared and filed federal, state, and local
Returns (for Tax or informational purposes) which were required to be filed by
or in respect of LCB and its Subsidiaries, or any of their properties, income
and/or operations on or prior to the Closing Date. As of the time they were
filed, the foregoing Returns accurately reflected the material facts regarding
the income, business, asset, operations, activities, status, and any other
information required to be shown thereon. No extension of time within which LCB
or any of its Subsidiaries may file any Return is currently in force.

               3.14.2 PAYMENT OF TAXES. Except as disclosed on Schedule 3.14.2
with respect to all amounts in respect of Taxes imposed on LCB or any Subsidiary
or for which LCB or any Subsidiary is or could be liable, whether to taxing
authorities (as, for example, under law) or to other Persons (as, for example,
under Tax allocation agreements), with respect to all taxable periods or
portions of periods ending on or before the Closing Date, all applicable tax
laws and agreements have been or will be fully complied with in all material
respects, and all such amounts required to be paid by or on behalf of LCB or any
Subsidiary to taxing authorities or others on or before the date hereof have
been paid.


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<PAGE>   397

               3.14.3 AUDIT HISTORY. Except as disclosed on Schedule 3.14.3,
there is no review or audit by any taxing authority of any Tax liability of LCB
or any Subsidiary currently in progress. Except as disclosed on Schedule 3.14.3,
LCB and its Subsidiaries have not received any written notices within the three
years preceding the Closing Date of any pending or threatened audit, by the
Internal Revenue Service or any state, local or foreign agency, for any Returns
or Tax liability of LCB or any Subsidiary for any period. LCB and its
Subsidiaries currently have no unpaid deficiencies assessed by the Internal
Revenue Service or any state, local or foreign taxing authority arising out of
any examination of any of the Returns of LCB or any Subsidiaries filed for
fiscal years ended on or after December 31, 1993 through the Closing Date, nor
to the Knowledge of LCB is there reason to believe that any material deficiency
will be assessed.

               3.14.4 STATUTE OF LIMITATIONS. Except as disclosed on Schedule
3.14.4, no agreements are in force or are currently being negotiated by or on
behalf of LCB or any Subsidiaries for any waiver or for the extension of any
statute of limitations governing the time of assessments or collection of any
Tax. No closing agreements or compromises concerning Taxes of LCB or any
Subsidiaries are currently pending.

               3.14.5 WITHHOLDING OBLIGATIONS. LCB and its Subsidiaries have
withheld from each payment made to any of their respective officers, directors
and employees, the amount of all applicable Taxes, including, but not limited
to, income tax, social security contributions, unemployment contributions,
backup withholding and other deductions required to be withheld therefrom by any
Tax law and have paid the same to the proper taxing authorities within the time
required under any applicable Tax law.

               3.14.6 TAX LIENS. There are no Tax liens, whether imposed by any
federal, state, local or foreign taxing authority, outstanding against any
assets owned by LCB or its Subsidiaries, except for liens for Taxes that are not
yet due and payable.

               3.14.7 TAX RESERVES. LCB and its Subsidiaries have made full and
adequate provision and reserve for all federal, state, local or foreign Taxes
for the current period for which Tax and information returns are not yet
required to be filed. The LCB Financial Statements contain fair and sufficient
accruals for the payment of all Taxes for the periods covered by the LCB
Financial Statements and all periods prior thereto.

               3.14.8 TAX ELECTIONS. No new elections with respect to Taxes or
any changes in current elections with respect to Taxes affecting the assets
owned by LCB or its Subsidiaries shall be made after the date of this Agreement
without the prior written consent of BANCORP, which shall not be unreasonably
withheld. BANCORP shall be deemed to have consented in writing to any election
LCB or its Subsidiaries shall desire to make if: (i) the electing Person shall
have notified the Chief Executive Officer of BANCORP in writing of its desire to
make such election, including in such notice a reasonably complete summary of
the election it desires to make and the reasons it desires to make such election
at least 20 Business Days prior to the due date (including extensions thereof)
for filing such election; and (ii) BANCORP shall not have responded in writing
to such notice by the fifth Business Day prior to the due date (including
extensions thereof) for filing such election.

               3.14.9 IRC SECTION 382 APPLICABILITY. None of LCB or any of its
Subsidiaries, including any party joining in any consolidated return to which
LCB is a member, underwent an


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<PAGE>   398

"ownership change" as defined in IRC Section 382(g) within the "testing period"
(as defined in IRC Section 382) ending immediately before the Effective Time,
and not taking into account any transactions contemplated by this Agreement.

               3.14.10 DISCLOSURE INFORMATION. Within 45 days of the date of
this Agreement, LCB will deliver to BANCORP a schedule setting forth the
following information with respect to LCB and as of the most recent practicable
date (as well as on an estimated pro forma basis as of the Closing giving effect
to the consummation of the transactions contemplated hereby): (a) LCB's basis in
its assets; (b) the amount of any net operating loss, net capital loss, unused
investment or other credit, unused foreign tax, or excess charitable
contribution allocable to LCB; and (c) the amount of any deferred gain or loss
allocable to LCB and arising out of any deferred intercompany transactions.

        Section 3.15 PERFORMANCE OF OBLIGATIONS. LCB and its Subsidiaries have
performed all material obligations required to be performed by them to date and
none of LCB or any of its Subsidiaries is in default under or in breach of any
term or provision of any covenant, contract, lease, indenture or any other
agreement, written or oral, to which any is a party, is subject or is otherwise
bound, and no event has occurred that, with the giving of notice or the passage
of time or both, would constitute such a default or breach, where such default
or breach or failure to perform would have a Material Adverse Effect on LCB or
its Subsidiaries. To LCB's Knowledge, and except as disclosed on Schedule 3.15
or in the portion of Schedule 3.16 that identifies 90-day past due or classified
or nonaccrual loans, no party with whom LCB or any of its Subsidiaries has an
agreement that is of material importance to the businesses of LCB or its
Subsidiaries is in default thereunder.

        Section 3.16 LOANS AND INVESTMENTS. Except as set forth on Schedule
3.16, all loans, leases and other extensions of credit, and guaranties, security
agreements or other agreements supporting any loans or extensions of credit, and
investments of LCB or their Subsidiaries are, and constitute, in all material
respects, the legal, valid and binding obligations of the parties thereto and
are enforceable against such parties in accordance with their terms, except as
the enforceability thereof may be limited by applicable law and otherwise by
bankruptcy, insolvency, moratorium or other similar laws affecting the rights of
creditors generally and by general equitable principles. Except as described on
Schedule 3.16, as of April 30, 1998, no loans or investments held by LCB or any
Subsidiary are: (i) more than ninety days past due with respect to any scheduled
payment of principal or interest, other than loans on a nonaccrual status; (ii)
classified as "loss," "doubtful," "substandard" or "specially mentioned" by LCB
or any banking regulators; or (iii) on a nonaccrual status in accordance with
LCB's loan review procedures. Except as set forth on Schedule 3.16, none of such
assets (other than loans) are subject to any restrictions, contractual,
statutory or other, that would materially impair the ability of the entity
holding such investment to dispose freely of any such assets at any time, except
restrictions on the public distribution or transfer of any such investments
under the Securities Act and the regulations thereunder or state securities laws
and pledges or security interests given in connection with government deposits.
All loans, leases or other extensions of credit outstanding, or commitments to
make any loans, leases or other extensions of credit to any Affiliates of LCB
are disclosed on Schedule 3.16. For outstanding loans or extensions of credit or
commitments to make loans or extensions of credit where the original principal
amounts are in excess of $25,000 and which by their terms are either secured by
collateral or supported by a guaranty or similar obligation, the security
interests have been duly perfected in all material respects and have the
priority they purport to have in all material respects, other than by operation
of law, and, in the case of each guaranty or similar obligation, each has been
duly executed and delivered to LCB or any Subsidiary, and to LCB's Knowledge, is
still in full force and effect.


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<PAGE>   399

        Section 3.17 BROKERS AND FINDERS. Except as set forth on Schedule 3.17,
none of LCB or any of its Subsidiaries is a party to or obligated under any
agreement with any broker or finder relating to the transactions contemplated
hereby, and neither the execution of this Agreement, the Merger Agreement, nor
the consummation of the transactions provided for herein or therein, will result
in any liability to any broker or finder. LCB agrees to indemnify and hold
harmless BANCORP and its affiliates, and to defend with counsel selected by
BANCORP and reasonably satisfactory to LCB, from and against any liability, cost
or expense, including attorneys' fees, incurred in connection with a breach of
this Section 3.17.

        Section 3.18 MATERIAL CONTRACTS. Schedule 3.18 to this Agreement
contains a complete and accurate written list of all material agreements,
obligations or understandings, written and oral, to which LCB or any Subsidiary
is a party as of the date of this Agreement, except for loans and other
extensions of credit made by LCB in the ordinary course of its business and
those items specifically disclosed in the LCB Financial Statements.

        Section 3.19 ABSENCE OF MATERIAL ADVERSE EFFECT. Since January 1, 1998,
the respective businesses of LCB and its Subsidiaries have been conducted only
in the ordinary course, in the same manner as theretofore conducted, and no
event or circumstance has occurred or is expected to occur which has had or
which, with the passage of time or otherwise, could reasonably be expected to
have a Material Adverse Effect on LCB.

        Section 3.20 UNDISCLOSED LIABILITIES. Except as disclosed on Schedule
3.20, none of LCB or any of its Subsidiaries has any liabilities or obligations,
either accrued, contingent or otherwise, that are material to LCB and its
Subsidiaries and that have not been: (a) reflected or disclosed in the LCB
Financial Statements; or (b) incurred subsequent to December 31, 1997 in the
ordinary course of business. LCB has no Knowledge of any basis for the assertion
against LCB or any of its Subsidiaries, of any liability, obligation or claim
(including without limitation that of any Governmental Entity) that will have or
cause, or could reasonably be expected to have or cause, a Material Adverse
Effect on LCB that is not fully and fairly reflected and disclosed in the LCB
Financial Statements or on Schedule 3.20.

        Section 3.21  EMPLOYEES; EMPLOYEE BENEFIT PLANS; ERISA.

               3.21.1 All material obligations of LCB or its Subsidiaries for
payment to trusts or other funds or to any Governmental Entity or to any
individual, director, officer, employee or agent (or his or her heirs, legatees
or legal representatives) with respect to unemployment compensation benefits,
profit-sharing, pension or retirement benefits or social security benefits,
whether arising by operation of law, by contract or by past custom, have been
properly accrued for the periods covered thereby on the LCB Financial Statements
and paid when due. All material obligations of LCB or its Subsidiaries, whether
arising by operation of law, by contract or by past custom for vacation or
holiday pay, bonuses and other forms of compensation which are payable to their
respective directors, officers, employees or agents have been properly accrued
on the LCB Financial Statements for the periods covered thereby and paid when
due. Except as set forth on Schedule 3.21.1, there are no unfair labor practice
complaints, strikes, slowdowns, stoppages or other controversies pending or, to
the Knowledge of LCB, attempts to unionize or controversies threatened


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<PAGE>   400

between LCB or any Subsidiary or Affiliate and or relating to, any of their
employees that are likely to have a Material Adverse Effect on LCB and its
Subsidiaries, taken as a whole. None of LCB or any Subsidiary is a party to any
collective bargaining agreement with respect to any of their employees and,
except as set forth on Schedule 3.21.1, none of LCB or any Subsidiary is a party
to a written employment contract with any of their respective employees and
there are no understandings with respect to the employment of any officer or
employee of LCB or any Subsidiary which are not terminable by LCB or such
Subsidiary without liability on not more than thirty (30) days' notice. Except
as disclosed in the LCB Financial Statements for the periods covered thereby,
all material sums due for employee compensation have been paid and all employer
contributions for employee benefits, including deferred compensation
obligations, and all material benefit obligations under any Employee Plan (as
defined in Section 3.21.3 hereof) or any Benefit Arrangement (as defined in
Section 3.21.4 hereof) have been duly and adequately paid or provided for in
accordance with plan documents. Except as set forth on Schedule 3.21.1, no
director, officer or employee of LCB or any Subsidiary is entitled to receive
any payment of any amount under any existing agreement, severance plan or other
benefit plan as a result of the consummation of any transaction contemplated by
this Agreement or the Merger Agreement. To LCB's Knowledge, it has materially
complied with all applicable federal and state statutes and regulations which
govern workers' compensation, equal employment opportunity and equal pay,
including, but not limited to, all civil rights laws, Presidential Executive
Order 1124, the Fair Labor Standards Act of 1938, as amended, and the Americans
with Disabilities Act.

               3.21.2 LCB has delivered as Schedule 3.21.2 a complete list of:

                      (a) All current employees of LCB or any of its
Subsidiaries together with each employee's tenure with LCB or such Subsidiary,
title or job classification, and the current annual rate of compensation
anticipated to be paid to each such employee; and

                      (b) All Employee Plans and Benefit Arrangements, including
all plans or practices providing for current compensation or accruals for active
Employees, including, but not limited to, all employee benefit plans, all
pension, profit-sharing, retirement, bonus, stock option, incentive, deferred
compensation, severance, long-term disability, medical, dental, health,
hospitalization, life insurance or other insurance plans or related benefits.

               3.21.3 Except as disclosed on Schedule 3.21.3, none of LCB or any
of its Subsidiaries maintains, administers or otherwise contributes to any
"employee benefit plan," as defined in Section 3(3) of ERISA, which is subject
to any provisions of ERISA and covers any employee, whether active or retired,
of LCB or any of its Subsidiaries (any such plan being herein referred to as an
"Employee Plan"). True and complete copies of each such Employee Plan, including
amendments thereto, have been previously delivered to BANCORP, together with (i)
all agreements regarding plan assets with respect to such Employee Plans, (ii) a
true and complete copy of the annual reports for the most recent three years
(Form 5500 Series including, if applicable, Schedules A and B thereto) prepared
in connection with any such Employee Plan, (iii) a true and complete copy of the
actuarial valuation reports for the most recent three years, if any, prepared in
connection with any such Employee Plan covering any active employee of LCB or
its Subsidiaries, (iv) a copy of the most recent summary plan description of
each such Employee Plan, together with any modifications thereto, and (v) a copy
of the most recent favorable determination letter (if applicable) from the
Internal Revenue Service for each Employee Plan. None of the Employee Plans is a
"multiemployer plan" as defined in Section 3(37) of ERISA or a "multiple
employer plan" as


                                       20

<PAGE>   401

covered in Section 412(c) of the IRC, and none of LCB or any of its Subsidiaries
has been obligated to make a contribution to any such multiemployer or multiple
employer plan within the past five years. None of the Employee Plans of LCB or
any of its Subsidiaries is, or for the last five years has been, subject to
Title IV of ERISA. Each Employee Plan which is intended to be qualified under
Section 401(a) of the IRC is so qualified and each trust maintained pursuant
thereto is exempt from income tax under Section 501(a) of the IRC, and none of
LCB or any of its Subsidiaries is aware of any fact which has occurred which
would cause the loss of such qualification or exemption.

               3.21.4 Except as disclosed in Schedule 3.21.2, none of LCB or any
of its Subsidiaries maintains (other than base salary and base wages) any form
of current or deferred compensation, bonus, stock option, stock appreciation
right, severance pay, salary continuation, retirement or incentive plan or
arrangement for the benefit of any director, officer or employee, whether active
or retired, of LCB or any of its Subsidiaries or for any class or classes of
such directors, officers or employees. Except as disclosed in Schedule 3.21.2,
none of LCB or any of its Subsidiaries maintains any group or individual health
insurance, welfare or similar plan or arrangement for the benefit of any
director, officer or employee of LCB or any of its Subsidiaries, whether active
or retired, or for any class or classes of such directors, officers or
employees. Any such plan or arrangement described in this Section 3.21.4, copies
of which have been delivered to BANCORP, shall be herein referred to as a
"Benefit Arrangement."

               3.21.5 To LCB's Knowledge, all Employee Plans and Benefit
Arrangements are operated in material compliance with the requirements
prescribed by any and all statutes, governmental or court orders, or
governmental rules or regulations currently in effect, including but not limited
to ERISA and the IRC, applicable to such plans or arrangements, and plan
documents relating to any such plans or arrangements, comply with or will be
amended to comply with applicable legal requirements. To LCB's Knowledge, none
of LCB or any of its Subsidiaries, nor any Employee Plan, nor any trusts created
thereunder, nor any trustee, administrator nor any other fiduciary thereof, has
engaged in a "prohibited transaction," as defined in Section 406 of ERISA and
Section 4975 of the IRC, that could subject LCB or any of its Subsidiaries or
BANCORP to liability under Section 409 or 502(i) of ERISA or Section 4975 of the
IRC or that would adversely affect the qualified status of such plans; each
"plan official" within the meaning of Section 412 of ERISA of each Employee Plan
is bonded to the extent required by such Section 412; with respect to each
Employee Plan, to LCB's Knowledge, no employee of LCB or any Subsidiary, nor any
fiduciary of any Employee Plan, has engaged in any breach of fiduciary duty as
defined in Part 4 of Subtitle B of Title I of ERISA which could subject LCB or
any of its Subsidiaries to liability if LCB or any such Subsidiary is obligated
to indemnify such Person against liability. Except as disclosed in Schedule
3.21.5, LCB and its Subsidiaries have not failed to make any material
contribution or pay any amount due and owing as required by law or the terms of
any Employee Plan or Benefit Arrangement.

               3.21.6 Except as set forth on Schedule 3.21.6, no Employee Plan
or Benefit Arrangement has any material liability of any nature, accrued or
contingent, including, without limitation, liabilities for federal, state, local
or foreign taxes, interest or penalty other than liability for claims arising in
the course of the administration of each such Employee Plan. Except as set forth
on Schedule 3.21.6, there is no pending, or to LCB's Knowledge threatened, legal
action, proceeding or investigation against any Employee Plan which could result
in material liability to such Employee Plan, other than routine claims for
benefits, and there is no basis for any such legal action, proceeding or
investigation.


                                       21

<PAGE>   402

               3.21.7 Each Benefit Arrangement which is a group health plan
(within the meaning of such term under IRC Section 4980B(g)(2)) materially
complies and has materially complied with the requirements of Section 601
through 608 of ERISA or Section 4980B of the IRC governing continuation coverage
requirements for employee-provided group health plans.

               3.21.8 Except as disclosed in Schedule 3.21.8, none of LCB or any
of its Subsidiaries maintains any Employee Plan or Benefit Arrangement pursuant
to which any benefit or other payment will be required to be made by LCB or any
of its Subsidiaries or Affiliates or pursuant to which any other benefit will
accrue or vest in any director, officer or employee of LCB or any Subsidiary or
Affiliate thereof, in either case as a result of the consummation of the
transactions contemplated by this Agreement or the Merger Agreement.

        Section 3.22 POWERS OF ATTORNEY. No power of attorney or similar
authorization given by LCB or any Subsidiary thereof is presently in effect or
outstanding other than powers of attorney given in the ordinary course of
business with respect to routine matters.

        Section 3.23 HAZARDOUS MATERIALS. Except as set forth on Schedule 3.23:

               3.23.1 Except for ordinary and necessary quantities of cleaning,
pest control and office supplies, and other small quantities of Hazardous
Substances that are used in the ordinary course of the respective businesses of
LCB and its Subsidiaries and in compliance with applicable Environmental Laws,
or ordinary rubbish, debris and nonhazardous solid waste stored in garbage cans
or bins for regular disposal off-site, or petroleum contained in and de minimus
quantities discharged from motor vehicles in their ordinary operation on any of
the LCB Properties (as defined below), LCB and its Subsidiaries have not engaged
in the generation, use, manufacture, treatment, transportation, storage (in
tanks or otherwise), or the disposal, of Hazardous Substances other than as
permitted by and only in compliance with applicable law. To LCB's Knowledge, no
Hazardous Substances have been released, emitted or disposed of, or otherwise
deposited, on, in or from any real property which is now or has been previously
owned since January 1, 1994, or which is currently or during the past three
years was leased, by LCB or any of its Subsidiaries, including OREO
(collectively, the "LCB Properties"), or to LCB's Knowledge, on or in any real
property in which LCB or any of its Subsidiaries now holds any security
interest, mortgage or other lien or interest with an underlying obligation in
excess of $25,000 ("LCB Collateralizing Real Estate"), except for (i) matters
disclosed on Schedule 3.23; (ii) ordinary and necessary quantities of cleaning,
pest control and office supplies used and stored in compliance with applicable
Environmental Laws, or ordinary rubbish, debris and nonhazardous solid waste
stored in garbage cans or bins for regular disposal off-site, or petroleum
contained in, and de minimus quantities discharged from, motor vehicles in their
ordinary operation on such LCB Properties; and (iii) such releases, emissions,
disposals or deposits which constituted a violation of an Environmental Law but
did not have a Material Adverse Effect on the LCB Property involved and would
not result in the incurrence or imposition of any liability, expense, penalty or
fine against LCB or any of its Subsidiaries in excess of $25,000 individually or
in the aggregate. To LCB's Knowledge, no activity has been undertaken on any of
the LCB Properties since January l, 1994, and to the Knowledge of LCB no
activities have been or are being undertaken on any of the LCB Collateralizing
Real Estate, that would cause or contribute to:


                                       22

<PAGE>   403

                      (a) any of the LCB Properties or LCB Collateralizing Real
Estate becoming a treatment, storage or disposal facility within the meaning of
RCRA or any similar state law or local ordinance;

                      (b) a release or threatened release of any Hazardous
Substances under circumstances which would violate any Environmental Laws; or

                      (c) the discharge of Hazardous Substances into any soil,
subsurface water or ground water or into the air, or the dredging or filling of
any waters, that would require a permit or any other approval under the Federal
Water Pollution Control Act, 33 U.S.C. ss.1251 et seq., the Clean Air Act, as
amended, 42 U.S.C. ss.7401 et seq., or any similar federal or state law or local
ordinance; the cumulative effect of which would have a material adverse effect
on the LCB Property or LCB Collateralizing Real Estate involved.

               3.23.2 To the Knowledge of LCB, there are not, and never have
been, any underground storage tanks located in or under any of the LCB
Properties or the LCB Collateralizing Real Estate.

               3.23.3 None of LCB or any of its Subsidiaries has received any
written notice of, and to the Knowledge of LCB none has received any verbal
notice of, any pending or threatened claims, investigations, administrative
proceedings, litigation, regulatory hearings or requests or demands for remedial
or responsive actions or for compensation, with respect to any of the LCB
Properties or LCB Collateralizing Real Estate, alleging noncompliance with or
violation of any Environmental Law or seeking relief under any Environmental Law
and none of the LCB Properties or LCB Collateralizing Real Estate is listed on
the United States Environmental Protection Agency's National Priorities List of
Hazardous Waste Sites, or, to the Knowledge of LCB, any other list, schedule,
log, inventory or record of hazardous waste sites maintained by any federal,
state or local agency.

               3.23.4 "Hazardous Substances" shall mean any hazardous, toxic or
infectious substance, material, gas or waste which is regulated by any local,
state or federal Governmental Entity, or any of their agencies.

        Section 3.24 Stock Options. Schedule 3.24 to this Agreement contains a
description of the LCB Stock Option Plan and list of all LCB Stock Options
outstanding, indicating for each: (a) the grant date; (b) whether vested or
unvested; (c) exercise price; and (d) a vesting schedule by optionee.

        Section 3.25 Effective Date of Representations, Warranties, Covenants
and Agreements. Each representation, warranty, covenant and agreement of LCB set
forth in this Agreement shall be deemed to be made on and as of the date hereof
and as of the Effective Time.

              ARTICLE 4. REPRESENTATIONS AND WARRANTIES OF BANCORP

        BANCORP and LMC represent and warrant to LCB that:

        Section 4.1 ORGANIZATION; CORPORATE POWER; ETC. BANCORP and LMC are
California corporations duly organized, validly existing and in good standing
under the laws of the State of


                                       23

<PAGE>   404

California and have all requisite corporate power and authority to own, lease
and operate its respective properties and assets and to carry on its respective
business substantially as it is being conducted on the date of this Agreement.
BANCORP is a bank holding company registered under the BHCA. Each of BANCORP's
Subsidiaries has all requisite corporate power and authority to own, lease and
operate its properties and to carry on its business substantially as it is being
conducted on the date of this Agreement, except where the failure to have such
power or authority would not have a Material Adverse Effect on BANCORP taken as
a whole or the ability of BANCORP or LMC to consummate the transactions
contemplated by this Agreement. BANCORP has all requisite corporate power and
authority to enter into this Agreement and, subject to obtaining all Requisite
Regulatory Approvals, BANCORP will have the requisite corporate power and
authority to perform its respective obligations hereunder with respect to the
consummation of the transactions contemplated hereby. BANCORP is the sole
shareholder of BANK and LMC. BANK is a national banking association authorized
by the OCC to conduct a general banking business in California. BANK is a member
of the Federal Reserve System. BANK's deposits are insured by the FDIC in the
manner and to the full extent provided by law. Neither the scope of business of
BANCORP or any Subsidiary, including BANK, nor the location of any of their
respective properties, requires that BANCORP or any of its respective
Subsidiaries be licensed to conduct business in any jurisdiction other than
those jurisdictions in which they are licensed or qualified to do business as a
foreign corporation, where the failure to be so licensed or qualified would,
individually or in the aggregate, have a Material Adverse Effect on BANCORP
taken as a whole.

        Section 4.2 LICENSES AND PERMITS. Except as disclosed on Schedule 4.2,
BANCORP and its Subsidiaries have all material licenses, certificates,
franchises, rights and permits that are necessary for the conduct of their
respective businesses, and such licenses are in full force and effect, except
for any failure to be in full force and effect that would not, individually or
in the aggregate, have a Material Adverse Effect on BANCORP taken as a whole, or
on the ability of BANCORP and/or LMC to consummate the transactions contemplated
by this Agreement. The properties, assets, operations and businesses of BANCORP
and those of its Subsidiaries, including BANK, are and have been maintained and
conducted, in all material respects, in compliance with all applicable licenses,
certificates, franchises, rights and permits.

        Section 4.3 SUBSIDIARIES. Other than as set forth on Schedule 4.3, there
is no corporation, partnership, joint venture or other entity in which BANCORP
owns, directly or indirectly (except as pledgee pursuant to loans or stock or
other interest held as the result of or in lieu of foreclosure pursuant to
pledge or other security arrangement) any equity or other voting interest or
position.

        Section 4.4 AUTHORIZATION OF AGREEMENT; NO CONFLICTS.

               4.4.1 The execution and delivery of this Agreement and the Merger
Agreement and the consummation of the transactions contemplated hereby and
thereby have been duly authorized by all necessary corporate action on the parts
of BANCORP and LMC, subject only to the approval of this Agreement and the
Merger Agreement by BANCORP's shareholders. This Agreement has been duly
executed and delivered by BANCORP and LMC and constitutes a legal, valid and
binding obligation of BANCORP and LMC, enforceable in accordance with its terms,
except as the enforceability thereof may be limited by bankruptcy, insolvency,
moratorium or other similar laws affecting the rights of creditors generally and
by general equitable principles. The Merger Agreement, upon the receipt of all
Requisite Regulatory Approvals and the due execution and filing of such Merger
Agreement in accordance with the applicable provisions of the California


                                       24

<PAGE>   405

Corporations Code, will constitute a legal, valid and binding obligation of LMC
and BANCORP, enforceable in accordance with its terms, except as the
enforceability thereof may be limited by bankruptcy, insolvency, moratorium or
other similar laws affecting the rights of creditors generally or by general
equitable principles.

               4.4.2 Except as discussed on Schedule 4.4, the execution and
delivery of this Agreement and the consummation of the transactions contemplated
hereby does not and will not conflict with, or result in any violation of or
default or loss of a material benefit under, any provision of the Articles of
Incorporation or Bylaws of BANCORP and LMC, or except for the necessity of
obtaining the Requisite Regulatory Approvals and the approval of the
shareholders of BANCORP, any material mortgage, indenture, lease, agreement or
other material instrument, or any permit, concession, grant, franchise, license,
judgment, order, decree, statute, law, ordinance, rule or regulation applicable
to BANCORP or LMC or any of their assets or properties or any of their
respective Subsidiaries, other than any such conflict, violation, default or
loss which (i) will not have a Material Adverse Effect on BANCORP and LMC taken
as a whole; or (ii) will be cured or waived prior to the Effective Time. No
material consent, approval, order or authorization of, or registration,
declaration or filing with, any Governmental Entity is required in connection
with the execution and delivery of this Agreement by BANCORP and LMC or the
performance by BANCORP and LMC of their obligations hereunder, except for (a)
filings required in order to obtain Requisite Regulatory Approvals; (b) the
filing of the Registration Statement (including the Joint Proxy Statement/
Prospectus constituting a part thereof) with the SEC relating to the Merger and
the declaration of effectiveness of the Registration Statement by the SEC and
any applicable state securities law regulatory authorities; (c) the filing and
approval of the Merger Agreement with the Secretary of the State of California;
(d) any approvals required to be obtained pursuant to the BHCA or the Federal
Deposit Insurance Act or any other required governmental approval for the
execution and delivery of this Agreement by BANCORP and LMC or the consummation
of the Merger; and (e) any consents, authorizations, approvals, filings or
exemptions required to be made or obtained under the securities or "blue sky"
laws of various jurisdictions in connection with the issuance of shares of
BANCORP Common Stock contemplated by this Agreement.

        Section 4.5 CAPITAL STRUCTURE OF BANCORP. The authorized capital stock
of BANCORP consists of 10,000,000 shares of BANCORP Common Stock, no par value
per share and 10,000,000 shares of BANCORP preferred stock. On the date of this
Agreement 974,214 shares of BANCORP Common Stock were outstanding, 183,277
shares of BANCORP Common Stock were reserved for issuance pursuant to employee
stock option and other employee stock plans (the "BANCORP Stock Plans"), and no
shares of BANCORP preferred stock were outstanding or were reserved for issuance
by BANCORP. All outstanding shares of BANCORP Common Stock are validly issued,
fully paid and nonassessable and do not possess any preemptive rights and were
not issued in violation of any preemptive rights or any similar rights of any
Person. The issuance of the shares of BANCORP Common Stock proposed to be issued
pursuant to this Agreement at the Effective Time will have been duly authorized
by all requisite corporate action of BANCORP, and such shares, when issued as
contemplated by this Agreement, will constitute duly authorized, validly issued,
fully paid and nonassessable shares of BANCORP Common Stock, and will not have
been issued in violation of any preemptive or similar rights of any Person. As
of the date of this Agreement, and except for this Agreement and the BANCORP
Stock Plans, BANCORP does not have outstanding any options, warrants, calls,
rights, commitments, securities or agreements of any character to which BANCORP
is a party or by which it is bound obligating BANCORP to issue, deliver or sell,
or cause to be


                                       25

<PAGE>   406

issued, delivered or sold, additional shares of capital stock of BANCORP or
obligating BANCORP to grant, extend or enter into any such option, warrant,
call, right, commitment or agreement.

        Section 4.6 BANCORP FILINGS.

               4.6.1 Since January 1, 1995, BANCORP and its Subsidiaries have
filed all reports, registrations and statements, together with any amendments
required to be made with respect thereto, that were required to be filed with
(a) the Federal Reserve Board or any Federal Reserve Bank; (b) the OCC; (c) the
SEC; and (d) any other applicable federal, state or local governmental or
regulatory authority. All such reports, registrations and filings including the
BANCORP Financial Statements are collectively referred to as the "BANCORP
Filings". Except to the extent prohibited by law, copies of the BANCORP Filings
have been made available to LCB. As of their respective filing or mailing dates,
each of the past BANCORP Filings (a) was true and complete in all material
respects (or was amended so as to be so promptly following discovery of any
discrepancy); and (b) complied in all material respects with all of the
statutes, rules and regulations enforced or promulgated by the governmental or
regulatory authority with which it was filed (or was amended so as to be so
promptly following discovery of any such noncompliance) and none contained any
untrue statement of a material fact or omitted to state a material fact required
to be stated therein or necessary to make the statements therein, in light of
the circumstances under which they were made, not misleading. The BANCORP
Financial Statements, together with the financial statements contained in the
BANCORP Filings, have been prepared in accordance with GAAP, or applicable
regulatory accounting principles, applied on a consistent basis during the
period involved (except as may be indicated in the notes thereto) and fairly
present (subject, in the case of the unaudited statements, to recurring
adjustments normal in nature and amount) the consolidated financial position of
BANCORP as of the dates thereof and the consolidated results of its operations,
cash flows and changes in shareholders' equity for the period then ended.

               4.6.2 BANCORP, or BANK, as the case may be, has filed each
report, schedule, and amendments to each of the foregoing since January 1, 1995
that BANCORP, or BANK, was required to file with the Federal Reserve Bank or the
OCC, all of which have been made available to LCB. The financial statements of
BANCORP included in the BANCORP Filings comply in all material respects with
applicable accounting requirements and have been prepared in accordance with
GAAP, or applicable regulatory accounting principles, applied on a consistent
basis during the periods involved (except as may be indicated in the notes
thereto, and fairly present (subject, in the case of the unaudited statements,
to recurring adjustments normal in nature and amount) the consolidated financial
position of BANCORP as of the dates thereof and the consolidated results of its
operations and cash flows or changes in financial position for the periods then
ended.

        Section 4.7 ACCURACY OF INFORMATION SUPPLIED.

               4.7.1 No representation or warranty of BANCORP contained herein
or any statement, schedule, exhibit or certificate given or to be given by or on
behalf of BANCORP or any of its Subsidiaries, including BANK, to LCB in
connection herewith and none of the information supplied or to be supplied by
BANCORP or any of its Subsidiaries, including BANK, to LCB hereunder contains or
will contain any untrue statement of material fact or omit to state any material
fact required to be stated therein or necessary in order to make the statements
therein, in light of the circumstances under which they are made, not
misleading.


                                       26

<PAGE>   407

               4.7.2 None of the information supplied or to be supplied by
BANCORP or relating to BANCORP and BANK which is included or incorporated by
reference in (i) the Registration Statement on Form S-4 to be filed with the SEC
by BANCORP in connection the issuance of shares of BANCORP Common Stock in the
Merger will, at the time the Registration Statement becomes effective under the
Securities Act, contain any untrue statement of a material fact or omit to state
a material fact required to be stated therein or necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading; (ii) the Joint Proxy Statement/ Prospectus and any amendment or
supplement thereto will, at all times from the date of mailing to shareholders
of BANCORP through the date of the meeting of shareholders of BANCORP to be held
in connection with the Merger, contain any untrue statement of a material fact
or omit to state a material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading; and (iii) the applications and forms to be filed with
securities or "blue sky" authorities, self regulatory authorities, or any
Governmental Entity in connection with the Merger, the issuance of any shares of
BANCORP Common Stock in connection with the Merger, or any Requisite Regulatory
Approvals will, at the time filed or at the time they become effective, contain
any untrue statement of a material fact or omit to state any material fact
required to be stated therein or necessary to make the statements therein, in
light of the circumstances under which they were made, not misleading. The
Registration Statement (except for such portions thereof that relate only to LCB
and its Subsidiaries) will comply in all material respects with the applicable
provisions of the Securities Act and the Exchange Act and the rules and
regulations thereunder.

               4.7.3 BANCORP has or will deliver to LCB copies of: (a) the
audited balance sheets of BANCORP and its Subsidiaries as of December 31, 1997,
1996 and 1995 and the related statements of income, changes in shareholders'
equity and cash flows for the years then ended and the related notes to such
financial statements, all as audited by Perry-Smith & Company, independent
public accountants (the "BANCORP Financial Statements"), and BANCORP will
hereafter until the Closing Date deliver to LCB copies of additional financial
statements of BANCORP as provided in Section 5.1.1(iii). The BANCORP Financial
Statements have been prepared (and all of said additional financial statements
will be prepared) in accordance with GAAP, or applicable regulatory accounting
principles, applied on a consistent basis during the periods involved (except as
may be indicated in the notes thereto) consistently followed throughout the
periods covered by such statements, and present (and, when prepared, will
present) fairly the financial position of BANCORP and its Subsidiaries as of the
respective dates indicated and the results of operations, cash flows and changes
in shareholders' equity at the respective dates and for the respective periods
covered by such financial statements (subject, in the case of the unaudited
statements, to recurring adjustments normal in nature and amount). In addition,
BANCORP has delivered to LCB copies of all management or other letters delivered
to BANCORP by its independent accountants in connection with any of the BANCORP
Financial Statements or by such accountants or any consultant regarding the
internal controls or internal compliance procedures and systems of BANCORP
issued at any time since January 1, 1994, and will make available for inspection
by LCB or its representatives, at such times and places as LCB may reasonably
request, reports and working papers produced or developed by such accountants or
consultants.

        Section 4.8 COMPLIANCE WITH APPLICABLE LAWS. Except as disclosed on
Schedule 4.8, , to the best of BANCORP's Knowledge, the respective businesses of
BANCORP and its Subsidiaries are not being conducted in violation of any law,
ordinance or regulation, except for violations which individually or in the
aggregate would not have a Material Adverse Effect on BANCORP and its


                                       27

<PAGE>   408

Subsidiaries, taken as a whole. No investigation or review by any Governmental
Entity with respect to BANCORP is pending or, to the Knowledge of BANCORP
threatened, nor has any Governmental Entity indicated to BANCORP an intention to
conduct the same, other than those the outcome of which, as far as can be
reasonably foreseen, will not have a Material Adverse Effect on BANCORP and its
Subsidiaries, taken as a whole.

        Section 4.9 LITIGATION. Except as disclosed on Schedule 4.9, there is no
suit, action or proceeding or investigation pending or, to the Knowledge of
BANCORP, threatened against or affecting BANCORP or any of its Subsidiaries
which, if adversely determined, would have a Material Adverse Effect on BANCORP
and its Subsidiaries, taken as a whole; nor is there any judgment, decree,
injunction, rule or order of any Governmental Entity or arbitrator outstanding
against BANCORP or any of its Subsidiaries that has or which, insofar as
reasonably can be foreseen, in the future would have, any such Material Adverse
Effect.

        Section 4.10 AGREEMENTS WITH BANKING AUTHORITIES. Neither BANCORP nor
any Subsidiary of BANCORP is a party to any written agreement or memorandum of
understanding with, or order or directive from, any Governmental Entity.

        Section 4.11 INSURANCE. BANCORP and its Subsidiaries have in full force
and effect policies of insurance with respect to their assets and businesses
against such casualties and contingencies and in such amounts, types and forms
as are customarily appropriate for their businesses, operations, properties and
assets. Schedule 4.11 contains a list of all policies of insurance and bonds
carried and owned by BANCORP or any Subsidiary. None of BANCORP or any of its
Subsidiaries is in default under any such policy of insurance or bond such that
it can be canceled and all material claims thereunder have been filed in timely
fashion. BANCORP and its Subsidiaries have filed claims with, or given notice of
claim to, their insurers or bonding companies in timely fashion with respect to
all material matters and occurrences for which they believe they have coverage.

        Section 4.12 TITLE TO ASSETS OTHER THAN REAL PROPERTY. BANCORP and its
Subsidiaries have good and marketable title to all their properties and assets
(other than real property which is the subject to Section 4.13), owned or leased
by BANCORP or any of its Subsidiaries, free and clear of all mortgages, liens,
encumbrances, pledges or charges of any kind or nature except as disclosed on
Schedule 4.12 and except for: (a) encumbrances as set forth in the BANCORP
Financial Statements; (b) liens for current Taxes not yet due which have been
fully reserved for; and (c) encumbrances, if any, that are not substantial in
character, amount or extent and do not detract materially from the value, or
interfere with present use or the sale or other disposition of the property
subject thereto or affected thereby. All such properties and assets are, and
require only routine maintenance to keep them, in good working condition, normal
wear and tear excepted.

        Section 4.13 REAL PROPERTY. Schedule 4.13 is an accurate list and
general description of all real property owned or leased by BANCORP or any of
its Subsidiaries, including OREO. Each of BANCORP and its respective
Subsidiaries has good and marketable title to the real properties that it owns,
as described in such Schedule, free and clear of all mortgages, covenants,
conditions, restrictions, easements, liens, security interests, charges, claims,
assessments and encumbrances, except for (a) rights of lessors, lessees or
sublessees in such matters as are reflected in a written lease; (b) current
Taxes (including assessments collected with Taxes) not yet due and payable; (c)
encumbrances, if any, that are not substantial in character, amount or extent
and do not materially


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<PAGE>   409

detract from the value, or interfere with present use, or the ability of BANCORP
to dispose, of the property subject thereto or affected thereby; and (d) other
matters as described in Schedule 4.13. BANCORP and its Subsidiaries have valid
leasehold interests in the leaseholds they respectively hold, free and clear of
all mortgages, liens, security interest, charges, claims, assessments and
encumbrances, except for (a) claims of lessors, co-lessees or sublessees in such
matters as are reflected in a written lease; (b) title exceptions affecting the
fee estate of the lessor under such leases; and (c) other matters as described
in Schedule 4.13. To the best of BANCORP's Knowledge, the activities of BANCORP
and its Subsidiaries with respect to all real property owned or leased by them
for use in connection with their operations are in all material respects
permitted and authorized by applicable zoning laws, ordinances and regulations
and all laws and regulations of any Governmental Entity. Except as set forth in
Schedule 4.13, BANCORP and its Subsidiaries enjoy quiet possession under all
material leases to which they are the lessees and all of such leases are valid
and in full force and effect, except as the enforceability thereof may be
limited by bankruptcy, insolvency, moratorium or other similar laws affecting
the rights of creditors generally and by general equitable principles. The
buildings and improvements on real properties owned or leased by BANCORP or any
of its Subsidiaries are in good condition and repair, and do not require more
than normal and routine maintenance, to keep them in such condition, normal wear
and tear excepted.

        Section 4.14 PERFORMANCE OF OBLIGATIONS. BANCORP and its Subsidiaries
have performed all material obligations required to be performed by them to date
and none of BANCORP or any of its Subsidiaries is in default under or in breach
of any term or provision of any covenant, contract, lease, indenture or any
other agreement, written or oral, to which any is a party, is subject or is
otherwise bound, and no event has occurred that, with the giving of notice or
the passage of time or both, would constitute such a default or breach, where
such default or breach or failure to perform would have a Material Adverse
Effect on BANCORP and its Subsidiaries, taken as a whole. To BANCORP's
Knowledge, and except as disclosed on Schedule 4.14, no party with whom BANCORP
or any of its Subsidiaries has an agreement that is of material importance to
the business of BANCORP and its Subsidiaries, taken as a whole, is in default
thereunder.

        Section 4.15 BROKERS AND FINDERS. Except as set forth on Schedule 4.15,
none of BANCORP or any of its Subsidiaries is a party to or obligated under any
agreement with any broker or finder relating to the transactions contemplated
hereby. BANCORP agrees to indemnify and hold harmless LCB and its affiliates,
and to defend with counsel reasonably satisfactory to LCB's Chief Executive
Officer, from and against any liability, cost or expense, including attorneys'
fees, incurred in connection with a breach of this Section 4.15.

        Section 4.16 ABSENCE OF MATERIAL ADVERSE EFFECT. Since January 1, 1998,
the respective businesses of BANCORP and its Subsidiaries have been conducted
only in the ordinary course, in substantially the same manner as theretofore
conducted, and no event or circumstance has occurred or is expected to occur
which has had or which, with the passage of time or otherwise, could reasonably
be expected to have a Material Adverse Effect on BANCORP and its Subsidiaries,
taken as a whole.

        Section 4.17 UNDISCLOSED LIABILITIES. Except as disclosed on Schedule
4.17, none of BANCORP or any of its Subsidiaries has any liabilities or
obligations, either accrued, contingent or otherwise, that are material to
BANCORP and its Subsidiaries, taken as a whole, and that have not been: (a)
reflected or disclosed in the BANCORP Financial Statements; or (b) incurred


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<PAGE>   410

subsequent to December 31, 1997 in the ordinary course of business. BANCORP has
no Knowledge of any basis for the assertion against BANCORP or any of its
Subsidiaries, of any liability, obligation or claim (including without
limitation that of any Governmental Entity) that will have or cause, or could
reasonably be expected to have or cause, a Material Adverse Effect on BANCORP
and its Subsidiaries, taken as a whole, that is not fairly reflected in the
BANCORP Financial Statements or on Schedule 4.17.

        Section 4.18 TAXES.

               4.18.1 FILING OF RETURNS. Except as set forth on Schedule 4.18.1,
BANCORP and its Subsidiaries have duly prepared and filed federal, state, and
local Returns (for Tax or informational purposes) which were required to be
filed by or in respect of BANCORP and its Subsidiaries, or any of their
properties, income and/or operations on or prior to the Closing Date. As of the
time they were filed, the foregoing Returns accurately reflected the material
facts regarding the income, business, asset, operations, activities, status, and
any other information required to be shown thereon. No extension of time within
which BANCORP or any of its Subsidiaries may file any Return is currently in
force.

               4.18.2 PAYMENT OF TAXES. Except as disclosed on Schedule 4.18.2
with respect to all amounts in respect of Taxes imposed on BANCORP or any
Subsidiary or for which BANCORP or any Subsidiary is or could be liable, whether
to taxing authorities (as, for example, under law) or to other Persons (as, for
example, under Tax allocation agreements), with respect to all taxable periods
or portions of periods ending on or before the Closing Date, all applicable tax
laws and agreements have been or will be fully complied with in all material
respects, and all such amounts required to be paid by or on behalf of BANCORP or
any Subsidiary to taxing authorities or others on or before the date hereof have
been paid.

               4.18.3 AUDIT HISTORY. Except as disclosed on Schedule 4.18.3,
there is no review or audit by any taxing authority of any Tax liability of
BANCORP or any Subsidiary currently in progress. Except as disclosed on Schedule
4.18.3, BANCORP and its Subsidiaries have not received any written notices
within the three years preceding the Closing Date of any pending or threatened
audit, by the Internal Revenue Service or any state, local or foreign agency,
for any Returns or Tax liability of BANCORP or any Subsidiary for any period.
BANCORP and its Subsidiaries currently have no unpaid deficiencies assessed by
the Internal Revenue Service or any state, local or foreign taxing authority
arising out of any examination of any of the Returns of BANCORP or any
Subsidiaries filed for fiscal years ended on or after December 31, 1993 through
the Closing Date, nor to the Knowledge of BANCORP is there reason to believe
that any material deficiency will be assessed.

               4.18.4 STATUTE OF LIMITATIONS. Except as disclosed on Schedule
4.18.4, no agreements are in force or are currently being negotiated by or on
behalf of BANCORP or any Subsidiaries for any waiver or for the extension of any
statute of limitations governing the time of assessments or collection of any
Tax. No closing agreements or compromises concerning Taxes of BANCORP or any
Subsidiaries are currently pending.

               4.18.5 WITHHOLDING OBLIGATIONS. BANCORP and its Subsidiaries have
withheld from each payment made to any of their respective officers, directors
and employees, the amount of all applicable Taxes, including, but not limited
to, income tax, social security contributions,


                                       30

<PAGE>   411

unemployment contributions, backup withholding and other deductions required to
be withheld therefrom by any Tax law and have paid the same to the proper taxing
authorities within the time required under any applicable Tax law.

               4.18.6 TAX LIENS. There are no Tax liens, whether imposed by any
federal, state, local or foreign taxing authority, outstanding against any
assets owned by BANCORP or its Subsidiaries, except for liens for Taxes that are
not yet due and payable.

               4.18.7 TAX RESERVES. BANCORP and its Subsidiaries have made full
and adequate provision and reserve for all federal, state, local or foreign
Taxes for the current period for which Tax and information returns are not yet
required to be filed. The BANCORP Financial Statements contain fair and
sufficient accruals for the payment of all Taxes for the periods covered by the
BANCORP Financial Statements and all periods prior thereto.

               4.18.8 TAX ELECTIONS. No new elections with respect to Taxes or
any changes in current elections with respect to Taxes affecting the assets
owned by BANCORP or its Subsidiaries shall be made after the date of this
Agreement without the prior written consent of LCB, which shall not be
unreasonably withheld. LCB shall be deemed to have consented in writing to any
election BANCORP or its Subsidiaries shall desire to make if: (i) the electing
Person shall have notified the Chief Executive Officer of LCB in writing of its
desire to make such election, including in such notice a reasonably complete
summary of the election it desires to make and the reasons it desires to make
such election at least 20 Business Days prior to the due date (including
extensions thereof) for filing such election; and (ii) LCB shall not have
responded in writing to such notice by the fifth Business Day prior to the due
date (including extensions thereof) for filing such election.

               4.18.9 IRC SECTION 382 APPLICABILITY. None of BANCORP or any of
its Subsidiaries, including any party joining in any consolidated return to
which BANCORP is a member, underwent an "ownership change" as defined in IRC
Section 382(g) within the "testing period" (as defined in IRC Section 382)
ending immediately before the Effective Time, and not taking into account any
transactions contemplated by this Agreement.

        Section 4.19 HAZARDOUS MATERIALS. Except as set forth on Schedule 4.19:

               4.19.1 Except for ordinary and necessary quantities of cleaning,
pest control and office supplies, and other small quantities of Hazardous
Substances that are used in the ordinary course of the respective businesses of
BANCORP and its Subsidiaries and in compliance with applicable Environmental
Laws, or ordinary rubbish, debris and nonhazardous solid waste stored in garbage
cans or bins for regular disposal off-site, or petroleum contained in, and de
minimus quantities discharged from, motor vehicles in their ordinary operation
on any of the BANCORP Properties (as defined below), BANCORP and its
Subsidiaries have not engaged in the generation, use, manufacture, treatment,
transportation, storage (in tanks or otherwise), or the disposal, of Hazardous
Substances other than as permitted by and only in compliance with applicable
law. To BANCORP's Knowledge, no Hazardous Substances have been released, emitted
or disposed of, or otherwise deposited, on, in or from any real property which
is now or has been previously owned since January 1, 1994, or which is currently
or during the past three years was leased, by BANCORP or any of its
Subsidiaries, including OREO (collectively, the "BANCORP Properties"), or to
BANCORP's Knowledge, on or in any real property in which BANCORP or any of its
Subsidiaries now holds any security interest, mortgage or other lien or interest
with an underlying obligation in


                                       31

<PAGE>   412

excess of $25,000 ("BANCORP Collateralizing Real Estate"), except for (i)
matters disclosed on Schedule 4.19; (ii) ordinary and necessary quantities of
cleaning, pest control and office supplies used and stored in compliance with
applicable Environmental Laws, or ordinary rubbish, debris and nonhazardous
solid waste stored in garbage cans or bins for regular disposal off-site, or
petroleum contained in, and de minimus quantities discharged from, motor
vehicles in their ordinary operation on such BANCORP Properties; and (iii) such
releases, emissions, disposals or deposits which constituted a violation of an
Environmental Law but did not have a Material Adverse Effect on the BANCORP
Property involved and would not result in the incurrence or imposition of any
liability, expense, penalty or fine against BANCORP or any of its Subsidiaries
in excess of $25,000 individually or in the aggregate. To BANCORP's Knowledge,
no activity has been undertaken on any of the BANCORP Properties since January
l, 1994, and to the Knowledge of BANCORP no activities have been or are being
undertaken on any of the BANCORP Collateralizing Real Estate, that would cause
or contribute to:

                      (a) any of the BANCORP Properties or BANCORP
Collateralizing Real Estate becoming a treatment, storage or disposal facility
within the meaning of RCRA or any similar state law or local ordinance;

                      (b) a release or threatened release of any Hazardous
Substances under circumstances which would violate any Environmental Laws; or

                      (c) the discharge of Hazardous Substances into any soil,
subsurface water or ground water or into the air, or the dredging or filling of
any waters, that would require a permit or any other approval under the Federal
Water Pollution Control Act, 33 U.S.C. ss.1251 et seq., the Clean Air Act, as
amended, 42 U.S.C. ss.7401 et seq., or any similar federal or state law or local
ordinance; the cumulative effect of which would have a material adverse effect
on the BANCORP Property or BANCORP Collateralizing Real Estate involved.

               4.19.2 To the Knowledge of BANCORP, there are not, and never have
been, any underground storage tanks located in or under any of the BANCORP
Properties or the BANCORP Collateralizing Real Estate.

               4.19.3 None of BANCORP or any of its Subsidiaries has received
any written notice of, and to the Knowledge of BANCORP none has received any
verbal notice of, any pending or threatened claims, investigations,
administrative proceedings, litigation, regulatory hearings or requests or
demands for remedial or responsive actions or for compensation, with respect to
any of the BANCORP Properties or BANCORP Collateralizing Real Estate, alleging
noncompliance with or violation of any Environmental Law or seeking relief under
any Environmental Law and none of the BANCORP Properties or BANCORP
Collateralizing Real Estate is listed on the United States Environmental
Protection Agency's National Priorities List of Hazardous Waste Sites, or, to
the Knowledge of BANCORP, any other list, schedule, log, inventory or record of
hazardous waste sites maintained by any federal, state or local agency.

        Section 4.20 EMPLOYEES.

               4.20.1 Except as set forth in Schedule 4.20.1, there are no
material controversies pending or threatened between BANCORP or any of its
Subsidiaries and any of their employees.


                                       32

<PAGE>   413

               4.20.2 Except as disclosed in the BANCORP Financial Statements at
December 31, 1997, or in Schedule 4.20.2, all material sums due for employee
compensation and benefits have been duly and adequately paid or provided for,
and all deferred compensation obligations are fully funded. Neither BANCORP nor
BANK is a party to any collective bargaining agreement with respect to any of
its employees or any labor organization to which its employees or any of them
belong.

               4.20.3 To BANCORP's Knowledge, no governmental agency or claimant
or representative of such claimant has alleged a material violation of ERISA by
BANCORP, the liability of which, if adversely determined would result in a
material adverse change in the capital or earnings of BANCORP.

        Section 4.21 POWERS OF ATTORNEY. No power of attorney or similar
authorization given by BANCORP or any Subsidiary thereof is presently in effect
or outstanding other than powers of attorney given in the ordinary course of
business with respect to routine matters.

        Section 4.22 LOANS AND INVESTMENTS. Except as set forth on Schedule
4.22, all loans, leases and other extensions of credit, and guaranties, security
agreements or other agreements supporting any loans or extensions of credit, and
investments of BANCORP or its Subsidiaries are, and constitute, in all material
respects, the legal, valid and binding obligations of the parties thereto and
are enforceable against such parties in accordance with their terms, except as
the enforceability thereof may be limited by applicable law and otherwise by
bankruptcy, insolvency, moratorium or other similar laws affecting the rights of
creditors generally and by general equitable principles. For outstanding loans
or extensions of credit or commitments to make loans or extensions of credit
where the original principal amounts are in excess of $25,000 and which by their
terms are either secured by collateral or supported by a guaranty or similar
obligation, the security interests have been duly perfected in all material
respects and have the priority they purport to have in all material respects,
other than by operation of law, and, in the case of each guaranty or similar
obligation, each has been duly executed and delivered to BANCORP or any
Subsidiary, and to BANCORP's Knowledge, is still in full force and effect.

        Section 4.23 EFFECTIVE DATE OF REPRESENTATIONS, WARRANTIES, COVENANTS
AND AGREEMENTS. Each representation, warranty, covenant and agreement of BANCORP
set forth in this Agreement shall be deemed to be made on and as of the date
hereof and as of the Effective Time.

                        ARTICLE 5. ADDITIONAL AGREEMENTS

        Section 5.1 ACCESS TO INFORMATION, DUE DILIGENCE, ETC.

               5.1.1 Upon reasonable notice, each party shall permit the other
party and their accountants, counsel and other representatives reasonable access
to their officers, employees, properties, books, contracts, commitments and
records and from the date hereof through the Effective Time, and shall furnish
or provide access to each other as soon as practicable, (i) a copy of each of
LCB's Filings or BANCORP's Filings filed subsequent to the date of this
Agreement promptly after such document has been filed with the appropriate
Governmental Entity, provided, however, that copies of any Returns relating to
Taxes of any of LCB or any of its Subsidiaries shall be furnished to BANCORP at
least 15 Business Days prior to the proposed date of filing thereof and


                                       33

<PAGE>   414

shall not be filed without the prior approval of BANCORP, which approval shall
not be unreasonably withheld or delayed; (ii) unless otherwise prohibited by
law, a copy of each report, schedule and other documents filed or received by it
during such period with any Regulatory Authority or the Internal Revenue
Service, as to documents other than related to employees or customers and other
than those distributed to banks generally; (iii) as promptly as practicable
following the end of each calendar month after the date hereof, a balance sheet
of LCB or BANCORP as of the end of such month; and (iv) all other information
concerning its business, properties, assets, financial condition, results of
operations, liabilities, personnel and otherwise as LCB or BANCORP may
reasonably request.

               5.1.2 Until the Effective Time, a representative of BANCORP shall
be entitled and shall be invited to attend meetings of the Board of Directors of
LCB and of the Loan Committee of LCB, and at least five (5) days' prior written
notice of the dates, times and places of such meetings shall be given to BANCORP
except that in the case of special meetings BANCORP shall receive the same
number of days' prior notice as LCB's directors receive for such meetings;
provided, however, that such representative shall excuse himself or herself from
any portion of any such meetings that (i) relate to approval of, or the exercise
of any rights under, this Agreement by LCB, and (ii) involve discussions between
such Board of Directors or such Loan Committee and legal counsel for LCB that
are entitled to be protected from disclosure under an attorney-client privilege
which would be lost due to the presence of such representative of BANCORP.

               5.1.3 Until the Effective Time, a representative of LCB shall be
entitled and shall be invited to attend meetings of the Boards of Directors of
BANCORP and BANK and of the Loan Committee of BANK, at least five (5) days'
prior to written notice of the dates, times and places of such meetings shall be
given to LCB except that in the case of special meetings LCB shall receive the
same number of days' prior notice as BANCORP's directors receive for such
meetings; provided, however, that such representative shall excuse himself or
herself from any portion of any such meetings that (i) relate to approval of, or
the exercise of any rights under, this Agreement by BANCORP, and (ii) involve
discussions between such Boards of Directors or such Loan Committees and legal
counsel for BANCORP that are entitled to be protected from disclosure under an
attorney-client privilege which would be lost due to the presence of such
representative of LCB.

               5.1.4 BANCORP, LMC and LCB each agrees to keep confidential and
not divulge to any other party or Person (other than to the employees,
attorneys, accountants and consultants of each who have a need to receive such
information and other than as may be required by law) any information received
from the other, unless and until such documents and other information otherwise
becomes publicly available or unless the disclosure of such information is
authorized by each party. In the event of termination of this Agreement for any
reason, the parties shall promptly return, or at the election of the other party
destroy, all nonpublic documents obtained from the other and any copies or notes
of such documents (except as otherwise required by law) and, upon the request of
the other party, confirm such destruction to the other in writing.

        Section 5.2 SHAREHOLDER APPROVAL.

               5.2.1 LCB and BANCORP each shall promptly call a meeting of its
respective shareholders to be held at the earliest practicable date after the
date on which the initial Registration Statement is filed with the SEC, but in
no event later than September 30, 1998, for the purpose of approving this
Agreement and authorizing the Merger Agreement and the Merger. Each of the


                                       34

<PAGE>   415

respective Boards of Directors will recommend to the respective shareholders,
approval of this Agreement, the Merger Agreement and the Merger; provided,
however, that the LCB Board of Directors or BANCORP's Board of Directors may
withdraw its recommendation if such Board of Directors believes in good faith
(based on a written opinion of a financial advisor that is experienced in
evaluating the fairness of Acquisition Proposals) that a Superior Proposal
(defined below) has been made and shall have determined in good faith, after
consultation with and based on written advice of its outside legal counsel, that
the withdrawal of such recommendation is necessary for such Board of Directors
to comply with its fiduciary duties under applicable law.

               5.2.2 If the Merger is approved by vote of the shareholders of
BANCORP and LCB, then, within ten (10) days thereafter BANCORP and LCB shall
send a Dissenting Shareholder Notice to each recordholder of any Dissenting
Shares.

               5.2.3 Prior to the Effective Time of the Merger, BANCORP, as the
sole shareholder of LMC, shall take all action necessary for the consummation of
the Merger by LMC.

        Section 5.3 TAKING OF NECESSARY ACTION.

               5.3.1 Subject to the terms and conditions of this Agreement, each
of the parties hereto agrees, subject to applicable laws and the fiduciary
duties of LCB's, BANCORP's or LMC's Boards of Directors, as advised in writing
by their respective counsel, to use all reasonable efforts promptly to take or
cause to be taken all action and promptly to do or cause to be done all things
necessary, proper or advisable under applicable laws and regulations to
consummate and make effective the transactions contemplated by this Agreement
and the Merger Agreement, including, without limitation, the delivery of any
certificate or other document reasonably requested by counsel to a party to this
Agreement. Without limiting the foregoing, BANCORP, LMC and LCB will use their
reasonable efforts to obtain all consents of third parties and Government
Entities necessary or, in the reasonable opinion of BANCORP or LCB advisable for
the consummation of the transactions contemplated by this Agreement. Without
limiting the foregoing, BANCORP shall cause LMC to take all actions necessary to
execute and file the Merger Agreement and to effect all transactions
contemplated of LMC by this Agreement and LCB shall take all actions necessary
to effect all transactions contemplated by this Agreement and the Merger
Agreement. In case at any time after the Effective Time any further action is
necessary or desirable to carry out the purposes of this Agreement, the Merger
Agreement, or to vest the Surviving Corporation with full title to all
properties, assets, rights, approvals, immunities and franchises of LCB, the
proper officers or directors of BANCORP, LMC or LCB, as the case may be, shall
take all such necessary action. Notwithstanding the foregoing, nothing in this
Agreement shall be construed to require LCB to take any action (or omit to take
any action) which may affect the Conversion Rate, except as may be specifically
provided for or required by this Agreement.

               5.3.2 The obligations of LCB or BANCORP contained in Section
6.2.5 of this Agreement shall continue to be in full force and effect despite
any Default thereof by reason of receipt of a Superior Proposal (defined below)
and any Default thereof by the defaulting party shall entitle either LCB or
BANCORP to such legal or equitable remedies as may be provided in this Agreement
or by law notwithstanding that any action or inaction of the Board of Directors
or officers of the defaulting party which is required to enable such party to
fulfill such obligations may be excused based on the continuing fiduciary
obligations of such party's Board of Directors and officers to its shareholders.
Notwithstanding the foregoing, however, in the event of a termination


                                       35

<PAGE>   416

of this Agreement by BANCORP or LCB and the actual payment of the liquidated
damages to the other party as provided for in Section 8.5 of this Agreement,
neither BANCORP, LCB or their respective directors or officers shall have any
obligations or liabilities of any kind under this Agreement by reason of any
such Default, and BANCORP or LCB shall have no further obligations of any kind
under this Agreement.

               5.3.3 LCB shall use its best efforts to cause each director,
executive officer and other Person who is an "Affiliate" of LCB (for purposes of
Rule 145 under the Securities Act) to deliver to BANCORP, on the date of this
Agreement, a written agreement in the form attached hereto as Exhibit 5.3 (the
"Affiliate Agreements").

        Section 5.4 REGISTRATION STATEMENT AND APPLICATIONS.

               5.4.1 BANCORP and LCB will cooperate and jointly prepare and file
as promptly as practicable the Registration Statement, the statements,
applications, correspondence or forms to be filed with appropriate State
securities law regulatory authorities, and the statements, correspondence or
applications to be filed to obtain the Requisite Regulatory Approvals to
consummate the transactions contemplated by this Agreement. Each of BANCORP and
LCB shall use all reasonable efforts to have the S-4 Registration Statement
declared effective under the Securities Act as promptly as practicable after
such filing, and thereafter mail the Joint Proxy Statement/Prospectus to the
shareholders of LCB. Each party will furnish all financial or other information,
including accountant comfort letters relating thereto, certificates, consents
and opinions of counsel concerning it and its Subsidiaries received by such
party.

               5.4.2 Each party shall provide to the other at the request of the
other party: (i) immediately prior to the filing thereof, copies of all material
statements, applications, correspondence or forms to be filed with state
securities law regulatory authorities, the SEC and other appropriate regulatory
authorities to obtain the Requisite Regulatory Approvals to consummate the
transactions contemplated by this Agreement; and (ii) promptly after delivery
to, or receipt from, such regulatory authorities all written communications,
letters, reports or other documents relating to the transactions contemplated by
this Agreement.

        Section 5.5 EXPENSES.

               5.5.1 Whether or not the Merger is consummated, all costs and
expenses incurred in connection with this Agreement and the transactions
contemplated hereby shall be paid by the party incurring the same, including,
without limitation, all costs associated with any resales of BANCORP Common
Stock by Affiliates of LCB; provided, however, that BANCORP will file on a
timely basis at its own expense the reports required by Rule 144(c) of the
Securities Act.

               5.5.2 LCB shall use its best efforts to ensure that its
attorneys, accountants, financial advisors, investment bankers and other
consultants engaged by it in connection with the transaction contemplated by
this Agreement submit full and final bills on or before the Determination Date
and that all such expenses are paid or properly accrued prior to the
Determination Date.


                                       36

<PAGE>   417

        Section 5.6 NOTIFICATION OF CERTAIN EVENTS.

               5.6.1 LCB shall provide to BANCORP, as soon as practicable,
written notice (sent via facsimile and overnight mail or courier) of the
occurrence or failure to occur of any of the events, circumstances or conditions
that are the subject of Sections 6.1 and 6.2, which notice shall provide
reasonable detail as to the subject matter thereof.

               5.6.2 BANCORP shall provide to LCB, as soon as practicable,
written notice (sent via facsimile and overnight mail or courier) of the
occurrence or failure to occur of any of the events, circumstances or conditions
that are the subject of Section 6.3 and 6.4, which notice shall provide
reasonable detail as to the subject matter thereof.

               5.6.3 Each party shall promptly advise the others in writing of
any change or event which could reasonably be expected to have a Material
Adverse Effect on the business, properties, assets, financial condition, results
of operations, liabilities or personnel of such party or on its ability to
consummate the transactions contemplated by this Agreement or the Merger
Agreement.

               5.6.4 LCB and BANCORP shall immediately notify the other in
writing in the event that such party becomes aware that the Registration
Statement or Joint Proxy Statement/Prospectus at any time contains any untrue
statement of a material fact or omits to state a material fact required to be
stated therein or necessary in order to make the statement therein, in light of
the circumstances under which they were made, not misleading or that the
Registration Statement or the Joint Proxy Statement/Prospectus otherwise is
required to be amended and supplemented, which notice shall specify, in
reasonable detail, the circumstances thereof. BANCORP shall promptly amend and
supplement such materials and disseminate the new or modified information so as
to fully comply with the Securities Act. If the amendment or supplement so
required relates to information concerning LCB, the out-of-pocket costs and
expenses of preparing, filing and disseminating such amendment or supplement
shall be borne by LCB.

        Section 5.7 CLOSING SCHEDULES. LCB has delivered to BANCORP on or before
the date of this Agreement all of the Schedules to this Agreement which LCB is
required to deliver to BANCORP hereunder (the "LCB Schedules"). BANCORP has
delivered to LCB on or before the date of this Agreement all of the Schedules to
this Agreement which BANCORP is required to deliver to LCB hereunder ( the
"BANCORP Schedules"). Immediately prior to the Closing Date, LCB shall have
prepared updates of the LCB Schedules provided for in this Agreement and shall
deliver to BANCORP revised schedules containing the updated information (or a
certificate signed by LCB's Chief Executive Officer stating that there have been
no changes on the applicable schedules); and BANCORP shall have prepared updates
of the BANCORP Schedules provided for in this Agreement and shall deliver to LCB
revised Schedules containing updated information (or a certificate signed by
BANCORP's Chief Executive Officer stating that there has been no change on the
applicable schedules.) Such updated schedules shall sometimes be referred to
collectively, as the "Closing Schedules." The Closing Schedules shall be dated
as of the day prior to the Closing Date and shall contain information as of the
day prior to the Closing Date or as of such earlier date as is practicable under
the circumstances. In the event the Closing Schedules disclose an event,
occurrence or circumstance that has had or could reasonably be expected to have
a Material Adverse Effect on LCB, on the one hand, or on BANCORP, on the other
hand, or on consummation of the transactions contemplated by this Agreement,
that was not disclosed in the previously delivered Schedules hereto, the party
delivering such Closing Schedules (the "Affected Party") shall so notify


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<PAGE>   418

the other party in the letter of transmittal for such Closing Schedules, the
Closing Date shall be delayed for seven (7) Business Days and such other party
shall be entitled to terminate this Agreement within five (5) Business Days
after receiving such Closing Schedules that disclose such event, occurrence or
circumstance. In the event of any such termination, the terminating party shall
have no liability for such termination. The Affected Party shall have no
liability to the terminating party in such an event unless (i) as a result of
the existence of such event, occurrence or circumstance so disclosed in the
Closing Schedules any of the representations or warranties of the Affected Party
contained in this Agreement are found to have been untrue in any material
respect as of the date of this Agreement, or (ii) the event, occurrence or
circumstance could have been prevented in the exercise of reasonable diligence
by any officers or directors of the Affected Party, in either of which cases the
Affected Party shall be liable to the terminating party for Liquidated Damages
as provided in Section 8.5 hereof.

        Section 5.8 ADDITIONAL ACCRUALS/APPRAISALS. Prior to the Closing Date,
but after the Determination Date, at BANCORP's request, LCB shall, consistent
with GAAP and applicable banking regulations, establish such additional accruals
and reserves immediately prior to the Determination Date as may be necessary to
conform LCB's accounting and credit and OREO loss reserve practices and methods
to those of BANCORP, provided, however, that no accrual or reserve made by LCB
pursuant to this Section 5.8, or any litigation or regulatory proceeding arising
out of any such accrual or reserve, or any other effect on LCB resulting from
LCB's compliance with this Section 5.8, shall constitute or be deemed to be a
breach, violation of or failure to satisfy any representation, warranty,
covenant, condition or other provision of this Agreement or otherwise be
considered in determining whether any such breach, violation or failure to
satisfy shall have occurred. Additionally, no such accrual or reserve made by
LCB pursuant to this Section 5.8 shall be used by the parties in the calculation
of the Per Share Merger Price.

                         ARTICLE 6. CONDUCT OF BUSINESS

        Section 6.1 AFFIRMATIVE CONDUCT OF LCB. During the period from the date
of execution of this Agreement through the Effective Time, LCB shall carry on
its business, and shall cause each of its respective Subsidiaries to carry on
its business, in the ordinary course in substantially the manner in which
heretofore conducted, subject to changes in law applicable to all California
state-chartered banks or all nonmember banks insured by the FDIC and directives
from regulators, and use all commercially reasonable efforts to preserve intact
its business organization, keep available the services of its officers and
employees, (other than terminations in the ordinary course of business) and
preserve its relationships with customers, depositors, suppliers and others
having business dealings with it; and, to these ends, shall fulfill each of the
following:

               6.1.1 Use its commercially reasonable efforts, or cooperate with
others, to expeditiously bring about the satisfaction of the conditions
specified in Article 7 hereof;

               6.1.2 Advise BANCORP promptly in writing of any change that would
have a Material Adverse Effect on its capital structure, financial condition,
assets, results of operations, business or prospects or of any matter which
would make the representations and warranties set forth in Article 3 hereof not
true and correct in any material respect as of the effective date of the
Registration Statement and at the Effective Time;


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<PAGE>   419

               6.1.3 Keep in full force and effect all of its existing material
permits and licenses and those of its Subsidiaries;

               6.1.4 Use its commercially reasonable efforts to maintain
insurance or bonding coverage on all material properties for which it is
responsible and on its business operations, and carry not less than the same
coverage for fidelity, public liability, personal injury, property damage and
other risks equal to that which is in effect as of the date of this Agreement;
and notify BANCORP in writing promptly of any facts or circumstances which could
affect its ability, or that of any of its Subsidiaries, to maintain such
insurance or bonding coverage;

               6.1.5 Perform its contractual obligations and not breach or come
into default on any of such obligations, and not amend, modify, or, except as
they may be terminated in accordance with their terms, terminate any material
contract, agreement, understanding, commitment, or offer, whether written or
oral, (collectively referred to as an "Understanding") or materially default in
the performance of any of its obligations under any Understanding where such
default would have a Material Adverse Effect on LCB;

               6.1.6 Duly observe and conform to all legal requirements
applicable to its business, except for any failure to so observe and conform
that would not, individually or in the aggregate, and, in the future will not,
have a Material Adverse Effect on LCB;

               6.1.7 Duly and timely file as and when due all reports and
Returns required to be filed with any Governmental Entity;

               6.1.8 Maintain its assets and properties in good condition and
repair, normal wear and tear excepted;

               6.1.9 Promptly advise BANCORP in writing of any event or any
other transaction within the Knowledge of LCB, whereby any Person or related
group of Persons acquires, after the date of this Agreement, directly or
indirectly, record or beneficial ownership (as defined in Rule 13d-3 promulgated
by the SEC pursuant to the Exchange Act) or control of 5% or more of the
outstanding shares of LCB Common Stock either prior to or after the record date
fixed for the LCB shareholders' meeting or any adjourned meeting thereof to
approve the transactions contemplated herein;

               6.1.10 (a) Maintain a reserve for loan and lease losses ("Loan
Loss Reserve") at a level which is adequate to provide for all known and
reasonably expected losses on loans, leases and other extensions of credit
outstanding and other inherent risks in LCB's portfolio of loans and leases, in
accordance with GAAP and applicable regulatory accounting principles and banking
laws and regulations;

                      (b) Charge off all loans, receivables and other assets, or
portions thereof, deemed uncollectible in accordance with GAAP, regulatory
accounting principles, and applicable law or regulation, or which have been
classified as "loss" or as directed by any regulatory authority, unless such
classification or direction has been disregarded in good faith by LCB, LCB has
submitted in writing to such regulatory authority the basis upon which it has so
disregarded such classification or direction, and such regulatory authority
retracts its direction requiring such charge-off;


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<PAGE>   420

               6.1.11 Furnish to BANCORP, as soon as practicable, and in any
event within fifteen days after it is prepared: (i) a copy of any report
submitted to the Board of Directors of LCB and access to the working papers
related thereto, provided, however, that LCB need not furnish BANCORP any
materials relating to deliberations of LCB's Board of Directors with respect to
its approval of this Agreement, communications of LCB's legal counsel with the
Board of Directors or officers of LCB regarding LCB's rights against or
obligations to BANCORP or its Subsidiaries under this Agreement, or books,
records and documents covered by the attorney-client privilege or which are
attorneys' work product; (ii) copies of all material reports, renewals, filings,
certificates, statements, correspondence and other documents specific to LCB or
filed with or received from any Federal Reserve Bank, the FDIC, the Commissioner
or any Governmental Entity; (iii) monthly unaudited balance sheets, statements
of income and changes in shareholders' equity for LCB and its Subsidiaries and
quarterly unaudited balance sheets, statements of income and changes in
shareholders' equity for LCB, in each case prepared on a basis consistent with
past practice; and (iv) such other reports as BANCORP may reasonably request
(which are otherwise deliverable under this Section 6.1.11) relating to LCB.
Each of the financial statements of LCB delivered pursuant to this Section
6.1.11 shall be accompanied by a certificate of the Chief Financial Officer of
LCB to the effect that such financial statements fairly present the financial
information presented therein of LCB, for the periods covered, subject to
recurring adjustments normal in nature and amount, necessary for a fair
presentation and are prepared on a basis consistent with past practice;

               6.1.12 LCB agrees that through the Effective Time, as of their
respect dates, (i) each LCB Filing will be true and complete in all material
respects; and (ii) each LCB Filing will comply in all material respects with all
of the statutes, rules and regulations enforced or promulgated by the
Governmental Entity with which it will be filed and none will contain any untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein, in light of the
circumstances under which they will be made, not misleading. Any financial
statement contained in any of such LCB Filings that is intended to present the
financial position of LCB during the periods involved to which it relates will
fairly present in all material respects the financial position of LCB and will
be prepared in accordance with GAAP or consistent with applicable regulatory
accounting principles and banking law and banking regulations, except as stated
therein;

               6.1.13 Maintain reserves for contingent liabilities in accordance
with GAAP or applicable regulatory accounting principles, and consistent with
past practices;

               6.1.14 Promptly notify BANCORP of the filing, or threatened
filing, of any litigation, or the filing or threatened filing of any government
or regulatory action, including an investigation or notice of investigation, or
similar proceeding or notice of any material claims against LCB or any of its
assets;

               6.1.15 Inform BANCORP of the amounts and categories of any loans,
leases or other extensions of credit, or other assets, that have been classified
by any bank regulatory authority or by any unit of LCB as "Specially Mentioned,"
"Renegotiated," "Substandard," "Doubtful," "Loss" or any comparable
classification ("Classified Assets"). LCB will furnish to BANCORP, as soon as
practicable, and in any event within fifteen days after the end of each calendar
month, schedules including the following: (i) Classified Assets by type
(including each credit or other asset in an amount equal to or greater than
$10,000), and its classification category; (ii) nonaccrual credits by type
(including each credit in an amount equal to or greater than $10,000); (iii)
renegotiated loans


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<PAGE>   421

by type (loans on which interest has been renegotiated to lower than market
rates because of the financial condition of the borrowers); (iv) delinquent
credits by type (including each delinquent credit in an amount equal to or
greater than $10,000), including an aging into 30-89 and 90+ day categories; (v)
loans or leases or other assets charged off, in whole or in part, during the
previous month by type (including each such loan or lease or other asset in an
amount equal to or greater than $10,000); and (vi) OREO or assets owned stating
with respect to each its type;

               6.1.16 Furnish to BANCORP, upon BANCORP's request, schedules with
respect to the following: (i) participating loans and leases, stating, with
respect to each, whether it is purchased or sold and the loan or lease type;
(ii) loans or leases (including any commitments) by LCB to any director or
officer (at or above the Vice President level) of LCB or any of its
Subsidiaries, or to any Person holding 5% or more of the capital stock of LCB,
including, with respect to each such loan or lease, the identity and, to the
best Knowledge of LCB, the relation of the borrower to LCB, the loan or lease
type and the outstanding and undrawn amounts; and (iii) standby letters of
credit, by type, (including each letter of credit in a face amount equal to or
greater than $10,000); and

               6.1.17 Make available to BANCORP copies of each credit
authorization package, consisting of all applications for and financial
information regarding loans, renewals of loans or other extensions of credit of
$25,000 or more (on a noncumulative basis) for secured loans or secured
extensions of credit and $10,000 in the case of unsecured loans or unsecured
extensions of credit, which are approved by LCB after the date of this
Agreement, within ten Business Days of preparation of such packages.

        Section 6.2 NEGATIVE COVENANTS OF LCB. During the period from the date
of execution of this Agreement through the Effective Time, LCB agrees that
without BANCORP's prior written consent, it shall not:

               6.2.1 (a) Declare or pay any dividend on, other than regular cash
dividends consistent with past practices, or make any other distribution in
respect of, any of its capital stock; (b) split, combine or reclassify any of
its capital stock or issue or authorize the issuance of any other securities in
respect of, in lieu of or in substitution for shares of its capital stock; or
(c) repurchase or otherwise acquire any shares of its capital stock;

               6.2.2 Take any action that would or might result in any of the
representations and warranties of LCB set forth in the Agreement becoming untrue
in any material respect or any of the conditions to the Merger set forth in
Article 7 not being satisfied, except to the extent such actions are required to
be undertaken by applicable law, regulation or at the direction of any
Regulatory Authority;

               6.2.3 Issue, deliver, sell, or grant, or authorize the issuance,
delivery, sale or grant of, or purchase, any shares of the capital stock of LCB
or any securities convertible or exercisable into or exchangeable for such
capital stock, or any rights, warrants or options, including options under any
stock option plans or enter into any agreements to do any of the foregoing,
except in connection with the issuance of LCB Common Stock pursuant to the
exercise of LCB Stock Options;

               6.2.4 Amend its Articles of Incorporation or Bylaws, except as
required by applicable law or by the terms of this Agreement;


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<PAGE>   422

               6.2.5 Authorize or knowingly permit any of its representatives,
directly or indirectly, to solicit or encourage any Acquisition Proposal (as
hereinafter defined) or participate in any discussions or negotiations with, or
provide any nonpublic information to, any Person or group of persons (other than
BANCORP, and its representatives) concerning any such solicited Acquisition
Proposal. LCB shall notify BANCORP immediately if any inquiry regarding an
Acquisition Proposal is received by LCB, including the terms thereof. For
purposes of this Section 6.2.5, "Acquisition Proposal" shall mean any (a)
proposal pursuant to which any Person other than BANCORP would acquire or
participate in a merger or other business combination or reorganization
involving LCB; (b) proposal by which any Person or group, other than BANCORP,
would acquire the right to vote ten percent (10%) or more of the capital stock
of LCB entitled to vote for the election of directors; (c) acquisition of the
assets of LCB other than in the ordinary course of business; or (d) acquisition
in excess of ten percent (10%) of the outstanding capital stock of LCB, other
than as contemplated by this Agreement. Notwithstanding the foregoing, nothing
contained in this Agreement shall prevent LCB or LCB's Board of Directors from
(i) furnishing nonpublic information to, or entering into discussions or
negotiations with, any person or entity in connection with an unsolicited bona
fide written Acquisition Proposal by such person or entity, or recommending an
unsolicited bona fide written Acquisition Proposal to the shareholders of LCB,
if and only to the extent that (A) the Board of Directors of LCB has determined
and believes in good faith (after consultation with and the concurrence of its
financial advisor) that such Acquisition Proposal would, if consummated, result
in a transaction materially more favorable, from a financial point of view, to
LCB's shareholders than the transaction contemplated by this Agreement (any such
more favorable Acquisition Proposal being referred to in this Agreement as a
"Superior Proposal") and LCB's Board of Directors has determined in good faith,
after consultation with and based on written advice from its outside legal
counsel, that such action is necessary for LCB to comply with its fiduciary
duties to shareholders under applicable law, and (B) prior to furnishing such
nonpublic information to, or entering into discussions or negotiations with,
such person or entity, LCB's Board of Directors has received from such person or
entity an executed confidentiality agreement, with terms no more favorable to
such party than those contained in the Confidentiality Agreement between LCB and
BANCORP, or (ii) complying with Rule 14e-2 promulgated under the Exchange Act
with regard to an Acquisition Proposal, if such Rule is applicable thereto;

               6.2.6 Acquire or agree to acquire by merging, consolidating with,
or by purchasing all or a substantial portion of the assets of, or in any other
manner, any business or any Person or otherwise acquire or agree to acquire any
assets which are material to LCB, other than in the ordinary course of business
consistent with prior practice;

               6.2.7 Sell, lease or otherwise dispose of any of its assets which
are material, individually or in the aggregate, to LCB, except in the ordinary
course of business consistent with prior practice;

               6.2.8 Incur any indebtedness for borrowed money or guarantee any
such indebtedness or issue or sell any debt securities of LCB or any of its
Subsidiaries or guarantee any debt securities of others other than in the
ordinary course of business consistent with prior practice;

               6.2.9 Enter into any Understanding, except: (a) deposits
incurred, and short-term debt securities (obligations maturing within one year)
issued, in its ordinary course of business consistent with prior practice, and
liabilities arising out of, incurred in connection with, or related to the
consummation of this Agreement; (b) commitments to make loans or other
extensions of


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<PAGE>   423

credit in the ordinary course of business consistent with prior practice; and
(c) loan sales in the ordinary course of business, without any recourse,
provided that no commitment to sell loans shall extend beyond the Effective
Time;

               6.2.10 Make or enter into a commitment to make any loan or other
extension of credit to any director, officer or employee of LCB or any of its
Subsidiaries, except in accordance with practice or policy in existence on the
date of this Agreement and in compliance with all applicable laws and all
applicable regulations and directives of any Governmental Entity;

               6.2.11 Except in the ordinary course of business consistent with
prior practice or as required by an existing contract, and provided prior
disclosure thereof has been made in Schedule 6.2.11, grant any general or
uniform increase in the rates of pay of employees or employee benefits or any
increase in salary or employee benefits of any officer, employee or agent or pay
any bonus to any Person;

               6.2.12 Sell, transfer, mortgage, encumber or otherwise dispose of
any assets or other liabilities except in the ordinary course of business
consistent with prior practice or as required by any existing contract;

               6.2.13 Make the credit underwriting policies, standards or
practices relating to the making of loans and other extensions of credit, or
commitments to make loans and other extensions of credit, or the Loan Loss
Reserve policies, less stringent than those in effect on December 31, 1997 or
reduce the amount of the Loan Loss Reserves or any other reserves for potential
losses or contingencies;

               6.2.14 Make any capital expenditures, or commitments with respect
thereto, except those in the ordinary course of business which do not exceed
$10,000 individually or $30,000 in the aggregate;

               6.2.15 Renew, extend or amend any existing employment contract or
agreement, enter into any new employment contract or agreement or make any bonus
or any special or extraordinary payments to any Person;

               6.2.16 Except in the ordinary course of business consistent with
prior practice, and in compliance with applicable laws and regulations, make any
material investments, by purchase of stock or securities, contributions of
capital, property transfers, purchases of any property or assets or otherwise,
in any other individual, corporation or other entity;

               6.2.17 Except as otherwise required to correct a prior filing,
compromise or otherwise settle or adjust any assertion or claim of a deficiency
in Taxes (or interest thereon or penalties in connection therewith) or file any
appeal from an asserted deficiency except in a form previously approved by
BANCORP, which approval will not be unreasonably withheld, in writing, or file
or amend any federal, foreign, state or local Tax Return or report or make any
tax election or change any method or period of accounting unless required by
GAAP or applicable law and, then, only after submitting such Tax return or
report or proposed Tax election or change in any method or period of accounting,
to BANCORP for its approval, which it shall not unreasonably withhold or delay;


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<PAGE>   424

               6.2.18 Except as contemplated in this Agreement, terminate any
Employee Plan or Benefit Arrangement;

               6.2.19 Change its fiscal year or methods of accounting in effect
at December 31, 1997, except as required by changes in GAAP or regulatory
accounting principles as concurred to by LCB's independent public accountants;

               6.2.20 Take or cause to be taken any action which would
disqualify the Merger as a "reorganization" within the meaning of Section 368(a)
of the IRC as a tax-free reorganization; or

               6.2.21 Take or cause to be taken into OREO any property without
(a) an environmental report reporting no adverse environmental condition on such
property, with a copy of such report delivered to BANCORP prior to taking such
property into OREO; and (b) the written consent of BANCORP, which shall not be
unreasonably withheld.

        Section 6.3 Conduct of BANCORP. During the period from the date of
execution of this Agreement through the Effective Time, BANCORP agrees (except
to the extent LCB shall otherwise consent in writing) to do the following:

               6.3.1 Use its commercially reasonable efforts, or cooperate with
others, to expeditiously bring about the satisfaction of the conditions
specified in Article 7 hereof;

               6.3.2 Advise LCB promptly in writing of any change that would
have a Material Adverse Effect on its capital structure, consolidated financial
condition, consolidated assets, consolidated results of operations, business or
prospects or of any matter which would make the representations and warranties
set forth in Article 4 hereof not true and correct in any material respect as of
the effective date of the Registration Statement and at the Effective Time;

               6.3.3 BANCORP agrees that through the Effective Time, as of their
respect dates, (i) each BANCORP Filing will be true and complete in all material
respects; and (ii) each BANCORP Filing will comply in all material respects with
all of the statutes, rules and regulations enforced or promulgated by the
Governmental Entity with which it will be filed and none will contain any untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein, in light of the
circumstances under which they will be made, not misleading. Any financial
statement contained in any of such BANCORP Filings that is intended to present
the financial position of BANCORP, on a consolidated basis, during the periods
involved to which it relates will fairly present in all material respects the
financial position of BANCORP, on a consolidated basis, and will be prepared in
accordance with GAAP or consistent with applicable regulatory accounting
principles and banking law and regulations, except as stated therein; and

               6.3.4 Promptly notify LCB of the filing, or threatened filing, of
any litigation, or the filing or threatened filing of any government or
regulatory action, including an investigation or notice of investigation, or
similar proceeding or notice of any material claims against BANCORP or any of
its assets, which is expected to have a Material Adverse Effect on BANCORP and
its Subsidiaries taken as a whole.


                                       44

<PAGE>   425

        Section 6.4 NEGATIVE COVENANTS OF BANCORP. During the period from the
date of execution of this Agreement through the Effective Time, BANCORP agrees
that without LCB's prior written consent, it shall not:

               6.4.1 (a) Declare or pay any dividend on, other than regular cash
dividends consistent with past practices, or make any other distribution in
respect of, any of its capital stock; (b) split, combine or reclassify any of
its capital stock or issue or authorize the issuance of any other securities in
respect of, in lieu of or in substitution for shares of its capital stock; or
(c) repurchase or otherwise acquire any shares of its capital stock;

               6.4.2 Take any action that would or might result in any of the
representations and warranties of BANCORP set forth in the Agreement becoming
untrue in any material respect or any of the conditions to the Merger set forth
in Article 7 not being satisfied, except to the extent such actions are required
to be undertaken by applicable law, regulation or at the direction of any
Regulatory Authority;

               6.4.3 Issue, deliver, sell, or grant, or authorize the issuance,
delivery, sale or grant of, or purchase, any shares of the capital stock of
BANCORP or any securities convertible or exercisable into or exchangeable for
such capital stock, or any rights, warrants or options, including options under
any stock option plans or enter into any agreements to do any of the foregoing,
except in connection with the issuance of BANCORP Common Stock pursuant to the
exercise of BANCORP Stock Options or pursuant to the proposed acquisition of
another financial entity identified by BANCORP in writing to LCB prior to the
execution of the Agreement;

               6.4.4 Amend its Articles of Incorporation or Bylaws, except as
required by applicable law or by the terms of this Agreement;

               6.4.5 Sell, lease or otherwise dispose of any of its assets which
are material, individually or in the aggregate, to BANCORP, except in the
ordinary course of business consistent with prior practice;

               6.4.6 Incur any indebtedness for borrowed money or guarantee any
such indebtedness or issue or sell any debt securities of BANCORP or any of its
Subsidiaries or guarantee any debt securities of others other than in the
ordinary course of business consistent with prior practice;

               6.4.7 Sell, transfer, mortgage, encumber or otherwise dispose of
any assets or other liabilities except in the ordinary course of business
consistent with prior practice or as required by any existing contract;

               6.4.8 Except in the ordinary course of business consistent with
prior practice, and in compliance with applicable laws and regulations, make any
material investments, by purchase of stock or securities, contributions of
capital, property transfers, purchases of any property or assets or otherwise,
in any other individual, corporation or other entity;

               6.4.9 Except as otherwise required to correct a prior filing,
compromise or otherwise settle or adjust any assertion or claim of a deficiency
in Taxes (or interest thereon or penalties in connection therewith) or file any
appeal from an asserted deficiency except in a form previously


                                       45

<PAGE>   426

approved by LCB, in writing, or file or amend any federal, foreign, state or
local Tax Return or report or make any tax election or change any method or
period of accounting unless required by GAAP or applicable law and, then, only
after submitting such Tax return or report or proposed Tax election or change in
any method or period of accounting, to LCB for its approval, which it shall not
unreasonably withhold or delay;

               6.4.10 Change its fiscal year or methods of accounting in effect
at December 31, 1997, except as required by changes in GAAP or regulatory
accounting principles as concurred to by BANCORP's independent public
accountants;

               6.4.11 Authorize or knowingly permit any of its representatives,
directly or indirectly, to solicit or encourage any Acquisition Proposal (as
hereinafter defined) or participate in any discussions or negotiations with, or
provide any nonpublic information to, any Person or group of persons (other than
LCB, and its representatives) concerning any such solicited Acquisition
Proposal. BANCORP shall notify LCB immediately if any inquiry regarding an
Acquisition Proposal is received by BANCORP, including the terms thereof. For
purposes of this Section 6.4.11, "Acquisition Proposal" shall mean any (a)
proposal pursuant to which any Person other than LCB would acquire or
participate in a merger or other business combination or reorganization
involving BANCORP; (b) proposal by which any Person or group would acquire the
right to vote ten percent (10%) or more of the capital stock of BANCORP entitled
to vote for the election of directors; (c) acquisition of the assets of BANCORP
other than in the ordinary course of business; or (d) acquisition in excess of
ten percent (10%) of the outstanding capital stock of BANCORP, other than as
contemplated by this Agreement. An Acquisition Proposal shall not mean
discussions or negotiations with an entity identified by BANCORP to LCB in
writing prior to the execution of this Agreement. Notwithstanding the foregoing,
nothing contained in this Agreement shall prevent BANCORP or its Board of
Directors from (i) furnishing nonpublic information to, or entering into
discussions or negotiations with, any person or entity in connection with an
unsolicited bona fide written Acquisition Proposal by such person or entity, or
recommending an unsolicited bona fide written Acquisition Proposal to the
shareholders of BANCORP, if and only to the extent that (A) the Board of
Directors of BANCORP has determined and believes in good faith (after
consultation with and the concurrence of its financial advisor) that such
Acquisition Proposal would, if consummated, result in a transaction materially
more favorable, from a financial point of view, to BANCORP's shareholders than
the transaction contemplated by this Agreement (any such more favorable
Acquisition Proposal being referred to in this Agreement as a "Superior
Proposal") and BANCORP's Board of Directors has determined in good faith, after
consultation with and based on written advice from its outside legal counsel,
that such action is necessary for BANCORP to comply with its fiduciary duties to
shareholders under applicable law, and (B) prior to furnishing such nonpublic
information to, or entering into discussions or negotiations with, such person
or entity, BANCORP's Board of Directors received from such person or entity an
executed confidentiality agreement, with terms no more favorable to such party
than those contained in the Confidentiality Agreement between LCB and BANCORP,
or (ii) complying with Rule 14e-2 promulgated under the Exchange Act with regard
to an Acquisition Proposal, if such Rule is applicable thereto;

               6.4.12 Take any action that would or might result in any of the
representations and warranties of BANCORP set forth in the Agreement becoming
untrue in any material respect or any of the conditions to the Merger set forth
in Article 7 not being satisfied, except to the extent such actions are required
to be undertaken by applicable law, regulation or at the direction of any
Regulatory Authority; or


                                       46

<PAGE>   427

               6.4.13 Take or cause to be taken any action which would
disqualify the Merger as a "reorganization" within the meaning of Section 368(a)
of the IRC as a tax-free reorganization; or

                   ARTICLE 7. CONDITIONS PRECEDENT TO CLOSING

        Section 7.1 CONDITIONS TO THE PARTIES' OBLIGATIONS. The obligations of
all the parties to this Agreement to effect the Merger shall be subject to the
fulfillment of the following conditions:

               7.1.1 This Agreement, the Merger Agreement and the Merger shall
have been validly approved by the holders of a majority of the outstanding
shares of LCB Common Stock and BANCORP Common Stock entitled to vote;

               7.1.2 All permits, approvals and consents required to be
obtained, and all waiting periods required to expire, prior to the consummation
of the Merger under applicable federal laws of the United States or applicable
laws of any state having jurisdiction over the transactions contemplated by this
Agreement and the Merger Agreement shall have been obtained or expired, as the
case may be (all such permits, approvals and consents and the lapse of all such
waiting periods being referred to as the "Requisite Regulatory Approvals"),
without the imposition of any condition which in the reasonable judgment of any
party to be affected by such condition is materially burdensome upon such party
or its respective Affiliates or the Surviving Corporation;

               7.1.3 There shall not be any action taken, or any statute, rule,
regulation or order enacted, entered, enforced or deemed applicable to the
Merger, by any Government Entity which: (i) makes the consummation of the Merger
illegal; (ii) requires the divestiture by BANCORP of any material asset or of a
material portion of the business of BANCORP; or (iii) imposes any condition upon
BANCORP or its Subsidiaries (other than general provisions of law applicable to
all banks and bank holding companies) which in the judgment of BANCORP would be
materially burdensome;

               7.1.4 The Registration Statement shall have become effective
under the Securities Act and no stop order suspending the effectiveness of the
Registration Statement shall have been issued and shall remain in effect. No
legal, administrative, arbitration, investigatory or other proceeding by any
Governmental Entity or any other Person shall have been instituted and, at what
otherwise would have been the Effective Time, remain pending by or before any
Governmental Entity to restrain or prohibit the transactions contemplated
hereby;

               7.1.5 BANCORP and LCB shall have received an opinion from
Perry-Smith & Co., dated the Effective Time, subject to assumptions and
exceptions normally included, and in form and substance reasonably satisfactory
to BANCORP and LCB, to the effect that the Merger will be treated for federal
income tax purposes as a reorganization within the meaning of Section 368(a) of
the IRC and that BANCORP and LCB will each be a party to that reorganization
within the meaning of Section 368(b) of the IRC;

               7.1.6 BANCORP and LCB shall have received from Perry-Smith & Co.,
who are the independent public accountants of BANCORP and LCB, letters, dated at
the effective date of the Registration Statement and at the Effective Time, in
form and substance satisfactory to BANCORP and LCB that the Merger may be
accounted for as a pooling of interests;


                                       47

<PAGE>   428

               7.1.7 BANCORP and LCB shall have received opinions of counsel for
the other party in substantially the forms previously agreed to by the parties
as set forth in Exhibits 7.1.7A and 7.1.7B, respectively, dated as of the
Closing Date;

               7.1.8 No action, suit or proceeding shall have been instituted or
threatened before any court or governmental body seeking to challenge or
restrain the transactions contemplated by this Agreement or the Merger Agreement
which presents a substantial risk that such transactions will be restrained or
that either party hereto may suffer material damages or other relief as a result
of consummating such transactions; and

               7.1.9 The holders of no more than 10% of the outstanding shares
of LCB Common Stock have exercised dissenters' rights. Dissenters of BANCORP
shall be included in such calculation. Dissenters' rights shall be deemed to be
exercised to the extent at the Effective Time the holder of such shares have
complied with the California Corporations Code concerning dissenters' rights.

        Section 7.2 CONDITIONS TO BANCORP'S OBLIGATIONS. The obligations of
BANCORP to effect the Merger shall be subject to the fulfillment (or waiver, in
writing, by BANCORP) of the following conditions:

               7.2.1 Except as otherwise provided in this Section 7.2, (a) the
representations and warranties of LCB contained in Article 3 shall be true in
all material respects as of the Effective Time as though made at the Effective
Time, except to the extent they expressly refer to an earlier time and except
where the failure to be true, individually or in the aggregate, would not have
or would not be reasonably likely to have, a Material Adverse Effect on LCB or
the Surviving Corporation, or upon the consummation of the transactions
contemplated hereby; (b) LCB shall have duly performed and complied in all
material respects with all agreements and covenants required by this Agreement
to be performed or complied with by it prior to or at the Effective Time, except
where the failure to so perform and comply, individually or in the aggregate,
would not have or would not be reasonably likely to have a Material Adverse
Effect on LCB or the Surviving Corporation, or upon the consummation of the
transactions contemplated hereby; (c) none of the events or conditions entitling
BANCORP to terminate this Agreement under Article 8 shall have occurred and be
continuing; and (d) LCB shall have delivered to BANCORP certificates dated the
date of the Effective Time and signed by the President and Chief Executive
Officer to the effect set forth in Subsections 7.2.1(a), (b) and (c);

               7.2.2 There shall have been obtained, without the imposition of
any material burden or restriction on any of the parties hereto not in existence
on the date hereof, each consent to the consummation of the Merger required to
be obtained from any Person under any agreement, contract or license to which
LCB is a party or by or under which it is bound or licensed, the withholding of
which might have a Material Adverse Effect on LCB, the Surviving Corporation or
BANCORP at or following the Effective Time, or on the transactions contemplated
by this Agreement;

               7.2.3 LCB shall have delivered its Closing Schedules to BANCORP
on the day immediately preceding the Closing Date and none of such Closing
Schedules shall reflect any item that was not on the LCB Schedules (or in the
LCB Financial Statements) delivered on the date of execution of this Agreement
that has had, would have, or could be reasonably likely to have, a


                                       48

<PAGE>   429

Material Adverse Effect on LCB, the Surviving Corporation or BANCORP at or after
the Effective Time, or on the consummation of the transactions contemplated
hereby;

               7.2.4 Between the date of this Agreement and the Effective Time,
no event or circumstance shall have occurred which has had or could reasonably
be expected to have a Material Adverse Effect on LCB, or its Subsidiaries, and
BANCORP shall have received a certificate signed on behalf of LCB by the
President and Chief Executive Officer of LCB to such effect;

               7.2.5 Counsel for BANCORP shall have approved, in the exercise of
counsel's reasonable discretion, the validity of all transactions herein
contemplated, as well as the form and substance of all opinions, certificates,
instruments of transfer and other documents to be delivered to BANCORP hereunder
or that are reasonably requested by such counsel;

               7.2.6 The sale of the BANCORP Common Stock resulting from the
Merger shall have been qualified or registered with the appropriate State
securities law or "blue sky" regulatory authorities of all States in which
qualification or registration is required under the State securities laws, and
such qualifications or registration shall not have been suspended or revoked;

               7.2.7 LCB shall have delivered to BANCORP not later than the date
of this Agreement all of the executed Affiliate Agreements in the form attached
hereto as Exhibit 5.3;

               7.2.8 None of LCB or any of its Subsidiaries shall be subject to
any memorandum of understanding, cease and desist order, or other agreement with
any Governmental Entity restricting the conduct of any of their respective
businesses, prospects and operations, so as to have a Material Adverse Effect;

               7.2.9 The Findley Group shall not have revoked, at any time prior
to the Effective Time, its opinion, rendered to the Board of Directors of
BANCORP on May 27, 1998 (the "BANCORP Fairness Opinion"), to the effect that the
terms of the Merger, from a financial standpoint, are fair to the shareholders
of BANCORP;

               7.2.10 All of LCB's director-shareholders shall have delivered to
BANCORP on the date of this Agreement the Director-Shareholder Agreements in the
form attached hereto as Exhibit 7.2.10;

               7.2.11 BANCORP shall have received a modified Change In Control
Severance Agreement executed by LCB and Mr. Gary Nordine in a form acceptable to
BANCORP, which agreement shall contain a covenant not to compete in Lake County
for a period of three years and LCB shall have accrued or expensed one-half of
the tax liability identified with payments to Mr. Nordine related to such
agreement; and

               7.2.12 Prior to the Determination Date James Updegraf or such
other person agreed to by the parties, shall have completed an outside loan
review of LCB to determine the adequacy of LCB's loan loss reserves. As of the
Determination Date LCB shall have increased the loan loss reserves to the level
required by such outside review.

        Section 7.3 CONDITIONS TO LCB'S OBLIGATIONS. The obligations of LCB to
effect the Merger shall be subject to the fulfillment (or waiver, in writing, by
LCB) of the following conditions:


                                       49

<PAGE>   430

               7.3.1 Except as otherwise provided in this Section 7.3, (a) the
representations and warranties of BANCORP contained in Article 4 shall be true
in all material respects as of the Effective Time as though made at the
Effective Time, except to the extent they expressly refer to an earlier time and
except where the failure to be true, individually or in the aggregate, would not
have or would not be reasonably likely to have, a Material Adverse Effect on
BANCORP and BANK, taken as a whole, or upon consummation of the transactions
contemplated hereby; (b) BANCORP shall have duly performed and complied in all
material respects with all agreements and covenants required by this Agreement
to be performed or complied with it prior to or at the Effective Time, except
where the failure to so perform and comply, individually or in the aggregate,
would not have or would not be reasonably likely to have a Material Adverse
Effect on BANCORP and BANK, taken as a whole, or upon the consummation of the
transactions contemplated hereby; (c) none of the events or conditions entitling
LCB to terminate this Agreement under Article 8 shall have occurred and be
continuing; and (d) BANCORP shall have delivered to LCB certificates dated the
date of the Effective Time and signed by a duly authorized officer to the effect
set forth in Subsections 7.3.1(a), (b) and (c);

               7.3.2 Counsel for LCB shall have approved, in the exercise of
counsel's reasonable discretion, the validity of all transactions herein
contemplated, as well as the form and substance of all opinions, certificates,
instruments of transfer and other documents to be delivered to LCB hereunder or
that are reasonably requested by such counsel;

               7.3.3 There shall not have been any change in the consolidated
financial condition, aggregate consolidated net assets, shareholders' equity,
business, or consolidated operating results of BANCORP and its Subsidiaries,
taken as a whole, from December 31, 1997 to the Effective Time that results in a
Material Adverse Effect as to BANCORP and its Subsidiaries, taken as a whole;

               7.3.4 BANCORP has taken such action as appropriate to convert LCB
stock options to BANCORP stock options adjusted for the Conversion Rate;

               7.3.5 Prior to the Closing Date, BANCORP shall have taken all
corporate action required to effectuate the appointment of the three individuals
named on Schedule 2.9 hereto to its Board of Directors effective immediately
after the Effective Time;

               7.3.6 BANCORP shall have delivered its Closing Schedules to LCB
on the day immediately preceding the Closing Date and none of such Closing
Schedules shall reflect any item that was not on the BANCORP Schedules (or in
the BANCORP Financial Statements) delivered on the date of execution of this
Agreement that has had, or would have a Material Adverse Effect on BANCORP and
its Subsidiaries, taken as a whole, at or after the Effective Time, or on the
consummation of the transactions contemplated hereby;

               7.3.7 The Bank Stock Group shall not have revoked, at any time
prior to the meeting of LCB's shareholders at which the Merger is to be voted
on, its opinion, rendered to the Board of Directors of LCB on May 27, 1998 (the
"LCB Fairness Opinion"), to the effect that the terms of the Merger, from a
financial standpoint, are fair to the shareholders of LCB;

               7.3.8 BANCORP shall have provided an agreement to those 10
employees of LCB listed on Schedule 7.3.8 that if such employee is terminated
within a two year period from the


                                       50

<PAGE>   431

Effective Time, such employee shall receive one week of base salary for every
year of employment at LCB up to a maximum of four weeks; and

               7.3.9 BANCORP shall have provided assurance to LCB of the
retention of LCB's existing employee benefits at least until December 31, 1999.

                 ARTICLE 8. TERMINATION, AMENDMENTS AND WAIVERS

        Section 8.1 TERMINATION. This Agreement may be terminated at any time
prior to the Effective Time;

               8.1.1 By mutual consent of the Boards of Directors of BANCORP and
LCB;

               8.1.2 By BANCORP or LCB upon the failure to satisfy any
conditions specified in Section 7.1 if such failure is not caused by any action
or inaction of the party requesting termination of this Agreement;

               8.1.3 By BANCORP or LCB if an Acquisition Event involving the
other party shall have occurred;

               8.1.4 By LCB if there shall have been a material breach of any of
the representations or warranties of BANCORP set forth in this Agreement, which
breach, in the reasonable opinion of LCB, by its nature cannot be cured or is
not cured prior to the Closing and which breach would, in the reasonable opinion
of LCB, individually or in the aggregate, have, or be reasonably likely to have,
a Material Adverse Effect on BANCORP and its Subsidiaries, taken as a whole, or
upon the consummation of the transactions contemplated hereby;

               8.1.5 By BANCORP if there shall have been a material breach of
any of the representations or warranties of LCB set forth in this Agreement,
which breach, in the reasonable opinion of BANCORP, by its nature cannot be
cured or is not cured prior to the Closing and which breach would, in the
reasonable opinion of BANCORP, individually or in the aggregate, have, or be
reasonably likely to have, a Material Adverse Effect on LCB or upon the
consummation of the transactions contemplated hereby;

               8.1.6 By LCB after the occurrence of a Default by BANCORP and the
continuance of such Default for a period of 20 Business Days after written
notice of such Default, if such Default, in the reasonable opinion of LCB,
cannot be cured prior to the Closing or, even though curable by the Closing, it
is not cured prior to the Closing;

               8.1.7 By BANCORP after the occurrence of a Default by LCB and the
continuance of such Default for a period of 20 Business Days after written
notice of such Default, if such Default, in the reasonable opinion of BANCORP,
cannot be cured prior to the Closing or, even though curable by the Closing, it
is not cured prior to the Closing;

               8.1.8 By BANCORP if the Closing Schedules delivered by LCB
disclose the occurrence of an event or the existence of any facts or
circumstances, not disclosed in the Schedules or the LCB Financial Statements
delivered to BANCORP on or before the date hereof, that has had


                                       51

<PAGE>   432

or could reasonably be expected to have a Material Adverse Effect on LCB, or
after the Effective Time, on BANCORP, or on the consummation of the transactions
contemplated hereby (an "LCB Material Adverse Event");

               8.1.9 By LCB if the Closing Schedules delivered by BANCORP
disclose the occurrence of an event or the existence of any facts or
circumstances, not disclosed in the Schedules or the BANCORP Financial
Statements delivered to LCB on or before the date hereof, that has had or could
reasonably be expected to have a Material Adverse Effect on BANCORP and its
Subsidiaries, taken as a whole, or on the consummation of the transactions
contemplated hereby (a "BANCORP Material Adverse Event");

               8.1.10 By LCB upon the failure of any of the conditions specified
in Section 7.3 to have been satisfied prior to December 31, 1998; or

               8.1.11 By BANCORP upon the failure of any of the conditions
specified in Section 7.2 to have been satisfied prior to December 31, 1998.;

        Section 8.2 EFFECT OF TERMINATION; SURVIVAL. Except as provided in
Section 8.5, no termination of this Agreement as provided in Section 8.1 for any
reason or in any manner shall release, or be construed as so releasing, any
party hereto from its obligations pursuant to Sections 5.1.4, 5.5, 8.5 or 9.5
hereof or from any liability or damage to any other party hereto arising out of,
in connection with, or otherwise relating to, directly or indirectly, said
party's material breach, Default or failure in performance of any of its
covenants, agreements, duties or obligations arising hereunder, or any breaches
of any representation or warranty contained herein arising prior to the date of
termination of this Agreement.

        Section 8.3 AMENDMENT. This Agreement may be amended by the parties
hereto, at any time before or after approval hereof by the shareholders of LCB
and BANCORP; provided, however, that after any such approval by such
shareholders, no amendments shall be made which by law require further approval
by such shareholders without such further approval.

        Section 8.4 WAIVER. Any term or provision of this Agreement other than
regulatory approval or any other provision required by law, may be waived in
writing at any time by the party which is, or whose shareholders are, entitled
to the benefits thereof.

        Section 8.5 LIQUIDATED DAMAGES; CANCELLATION FEE.

               8.5.1 In the event of the occurrence of (i) an Acquisition Event
involving LCB, then LCB shall pay to BANCORP the sum of Five Hundred Thousand
Dollars ($500,000) in cash; or (ii) an Acquisition Event involving BANCORP, then
BANCORP shall pay to LCB the sum of Five Hundred Thousand Dollars ($500,000) in
cash.

               8.5.2 In the event of termination of this Agreement by LCB
pursuant to Section 8.1.10 as a result of the revocation of the LCB Fairness
Opinion; or a termination of this Agreement by BANCORP pursuant to (i) Section
8.1.2 (no approval by LCB shareholders), or (ii) pursuant to Section 8.1.5
(breach of representations or warranties of LCB) or Section 8.1.7 (Default) or
Section 8.1.8 (disclosure in the Closing Schedules of an LCB Material Adverse
Event), where such breach of representation or warranty, Default or LCB Material
Adverse Event shall have been caused in


                                       52

<PAGE>   433

whole or in material part by any action or inaction within the control of LCB or
any of its Subsidiaries, or any of their directors or executive officers (it
being understood that any breach or Default or LCB Material Adverse Event that
occurred after the date of this Agreement and was outside of the control of LCB
and its Subsidiaries, and the directors and executive officers thereof, such as,
by way of example only, the filing of a lawsuit against LCB, shall not come
within this Section 8.5.2), then, LCB shall pay to BANCORP the sum of Two
Hundred Thousand Dollars ($200,000), in cash; provided, however, that if an
Acquisition Agreement occurs involving LCB within one hundred eighty (180) days
following any termination by BANCORP to which this Section 8.5.2 applies, LCB
shall pay to BANCORP an additional Three Hundred Thousand Dollars ($300,000) in
cash.

               8.5.3 In the event of the termination of this Agreement by
BANCORP pursuant to Section 8.1.11 as a result of the revocation of the BANCORP
Fairness Opinion; or a termination of this Agreement by LCB pursuant to (i)
Section 8.1.2 (no approval by BANCORP Shareholders), or (ii) 8.1.4 (breach of
representations and warranties of BANCORP) or Section 8.1.6 (Default), or
Section 8.1.9 (disclosure in Closing Schedules of a BANCORP Material Adverse
Event), where such breach of representation or warranty, or such Default or
BANCORP Material Adverse Event shall have been caused in whole or in material
part by any action or inaction within the control of BANCORP or any of its
Subsidiaries, or any of their directors or executive officers (it being
understood that any action or inaction outside of the control of BANCORP, its
Subsidiaries and their directors and executive officers, such as, by way of
example only, the filing of a lawsuit against BANCORP, shall not come within
this Section 8.5.3), then, BANCORP shall pay to LCB the sum of Two Hundred
Thousand Dollars ($200,000), in cash; provided, however, that if an Acquisition
Event occurs involving BANCORP within one hundred eighty (180) days following
any termination by LCB to which this Section 8.5.3 applies, BANCORP shall pay to
LCB an additional Three Hundred Thousand Dollars ($300,000) in cash.

               8.5.4 The parties have determined that the occurrence of any of
the events or circumstances set forth in Sections 8.5.1, 8.5.2 and 8.5.3 would
cause a substantial damage and loss and lost business opportunities to the party
terminating this Agreement as a result thereof and that the payments
contemplated by Sections 8.5.1, 8.5.2 and 8.5.3 above provide reasonable and
fair compensation for such damage, loss and lost business opportunities and are
not intended to be and do not constitute a penalty or forfeiture. Such payments
will be made within 10 Business Days following a termination of the Agreement
that gives rise to the payment of such liquidated damages pursuant to Sections
8.5.1, 8.5.2 or 8.5.3, as applicable. Upon the making and receipt of payments
due under this Section 8.5, neither party, nor any Affiliates of any party,
shall have any further obligation or liability of any kind under this Agreement
to the other party, except pursuant to Section 5.1.4, 5.5 and 9.5.

               8.5.5 In the event of the termination of this Agreement by
BANCORP or LCB and for any reason other than as specified in Sections 8.5.1,
8.5.2 or 8.5.3 above, none of the parties hereto, nor any Affiliates of any such
parties, shall have any further obligation or liability of any kind to the other
party, except pursuant to Sections 5.1.4, 5.5 and 9.5.


                                       53

<PAGE>   434

                          ARTICLE 9. GENERAL PROVISIONS

        Section 9.1 NONSURVIVAL OF REPRESENTATIONS AND WARRANTIES. None of the
representations, warranties, covenants and agreements in this Agreement or in
any instrument delivered pursuant to this Agreement shall survive the Effective
Time, except for those covenants and agreements contained herein and therein
which by their terms apply in whole or in part after the Effective Time or to a
termination of this Agreement.

        Section 9.2 NOTICES. All notices and other communications hereunder
shall be in writing and shall be deemed given if delivered personally, mailed by
registered or certified mail (return receipt requested), sent by confirmed
overnight courier or telecopied (with electronic confirmation and verbal
confirmation for the person to whom such telecopy is addressed), on the date
such notice is so delivered, mailed or sent, as the case may be, to the parties
at the following addresses (or any such other address for a party as shall be
specified by like notice):

        If to LCB at:

               Lake Community Bank
               805 11th Street
               Lakeport, California 95453
               Fax No. (707) 263-4510
               Attention: Gary Nordine, President/CEO

        with a copy to:

               Lillick & Charles LLP
               Two Embarcadero, Suite 2600
               San Francisco, California 94111
               Fax No. (415) 984-8300
               Attention: R. Brent Faye, Esq.

        If to BANCORP or LMC at:

               Western Sierra Bancorp
               4011 Plaza Goldorado Circle
               Cameron Park, California 95682
               Fax No. (916) 677-5075
               Attention: Gary D. Gall, President/CEO

        with a copy to:

               Gary Steven Findley & Associates
               1470 North Hundley Street
               Anaheim, California 92806
               Fax No. (714) 630-7910
               Attention: Gary Steven Findley, Esq.


                                       54

<PAGE>   435

        Section 9.3 COUNTERPARTS. This Agreement may be executed in one or more
counterparts, all of which shall be considered one and the same agreement, and
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other parties, it being understood that all
parties need not sign the same counterpart.

        Section 9.4 ENTIRE AGREEMENT/NO THIRD PARTY RIGHTS/ASSIGNMENT. This
Agreement (including the documents and instruments referred to herein): (a)
constitutes the entire agreement and supersedes all prior agreements and
understandings, both written and oral, among the parties with respect to the
subject matter hereof; (b) except as expressly set forth herein, is not intended
to confer upon any person other than the parties hereto any rights or remedies
hereunder; (c) shall not be assigned by a party, by operation of law or
otherwise, without the consent of the other parties; and (d) subject to the
foregoing, shall be binding upon and shall inure to the benefit of the parties
hereto and their permitted successors and assigns.

        Section 9.5 NONDISCLOSURE OF AGREEMENT. BANCORP and LCB agree, except as
required by law or the rules of the NASDAQ, so long as this Agreement is in
effect, not to issue any public notice, disclosure or press release with respect
to the transactions contemplated by this Agreement without seeking the consent
of the other party, which consent shall not be unreasonably withheld.

        Section 9.6 GOVERNING LAW. This Agreement shall be governed and
construed in accordance with the laws of the State of California, without regard
to any applicable conflicts of law.

        Section 9.7 HEADINGS/TABLE OF CONTENTS. The table of contents and
headings contained in this Agreement are for reference purposes only and shall
not affect in any way the meaning or interpretation of this Agreement.

        Section 9.8 ENFORCEMENT OF AGREEMENT. The parties hereto agree that
irreparable damage will occur in the event that any of the provisions of this
Agreement or the Merger Agreement is not performed in accordance with its
specific terms or is otherwise breached. It is accordingly agreed that the
parties shall be entitled to an injunction or injunctions to prevent breaches of
this Agreement and to enforce specifically the terms and provisions hereof in
any court of the State of California or any state having jurisdiction, this
being in addition to any remedy to which they are entitled at law or in equity.

        Section 9.9 SEVERABILITY. Any term or provision of this Agreement which
is invalid or unenforceable in any jurisdiction shall, as to that jurisdiction,
be ineffective to the extent of such invalidity or unenforceability without
rendering invalid or unenforceable the remaining terms and provisions of this
Agreement or affecting the validity or enforceability of any of the terms or
provisions of this Agreement in any other jurisdiction. If any provision of this
Agreement is so broad as to be unenforceable, the provision shall be interpreted
to be only so broad as is enforceable.


                                       55

<PAGE>   436
     IN WITNESS WHEREOF, BANCORP, LMC and LCB have caused this Agreement to be
signed by their respective officers thereunto duly authorized, all as of the
date first above written.

WESTERN SIERRA BANCORP                        LAKE COMMUNITY BANK



By: /s/ GARY D. GALL                          By: /s/ GARY E. NORDINE
    ------------------------------                ------------------------------
    Name: Gary D. Gall                            Name: Gary E. Nordine



By: /s/ JOSEPH SURRA                          By: /s/ HOWARD VAN LENTE
    ------------------------------                ------------------------------
    Name: Joseph Surra                            Name: Howard Van Lente


LMC MERGER COMPANY


By: /s/ GARY D. GALL
    ------------------------------
    Name: Gary D. Gall



By: /s/ Joseph Surra
    ------------------------------
    Name: Joseph Surra



                                       56

<PAGE>   437

                         INDEX OF EXHIBITS AND SCHEDULES
                       PREVIOUSLY DELIVERED BY THE PARTIES

                                    Exhibits
                                    --------

Exhibit 2.1                Form of Merger Agreement
Exhibit 5.3(a)             Form of Affiliate Agreements
Exhibit 7.1.7A             Form of Opinion of LCB Counsel
Exhibit 7.1.7B             Form of Opinion of BANCORP and BANK Counsel
Exhibit 7.2.10             Form of Director-Shareholder Agreements

                                    Schedules
                                    ---------

Schedule 2.9               LCB Directors
Schedule 3.2               Licenses and Permits
Schedule 3.3               Subsidiaries
Schedule 3.4               Required Consents and Conflicts
Schedule 3.8               Compliance with Laws
Schedule 3.9               Litigation
Schedule 3.11              Insurance Policies
Schedule 3.12              Title Exceptions
Schedule 3.13              Real Property
Schedule 3.14.1-.4         Tax Matters
Schedule 3.15              Performance of Obligations
Schedule 3.16              Loans and Investments
Schedule 3.17              LCB's Brokers and Finders
Schedule 3.18              Material Contracts
Schedule 3.20              Undisclosed Liabilities
Schedule 3.21.1-.8         Employees; Employee Benefit Plans
Schedule 3.23              Potential Environmental Liabilities
Schedule 3.24              Stock Options
Schedule 4.2               Licenses and Permits
Schedule 4.3               Subsidiaries
Schedule 4.4               Regulatory Concerns and Conflicts
Schedule 4.8               Compliance with Laws
Schedule 4.9               Litigation
Schedule 4.11              Insurance
Schedule 4.12              Title Exceptions
Schedule 4.13              Real Property
Schedule 4.14              Performance of Obligations
Schedule 4.15              BANCORP's Brokers and Finders
Schedule 4.17              Undisclosed Liabilities
Schedule 4.18.1-.4         Tax Matters
Schedule 4.19              Potential Environmental Liabilities
Schedule 4.20.1-.2         Employees
Schedule 4.22              Loans and Investments
Schedule 6.2.11            Salary Increases
Schedule 7.3.8             LCB Employee List


                                       57

<PAGE>   438
                        FIRST AMENDMENT TO AGREEMENT AND
                        PLAN OF REORGANIZATION AND MERGER


This First Amendment to Agreement and Plan of Reorganization and Merger dated as
of December __, 1998 (the "Amendment") is entered into by and among Western
Sierra Bancorp ("BANCORP"), LMC Merger Company ("LMC") and Lake Community Bank
("LCB").

                                    RECITALS

         WHEREAS, BANCORP, LMC and LCB have entered into that certain Agreement
and Plan of Reorganization and Merger dated as of May 27, 1998 (the "Agreement")
providing for the merger of LMC with and into LCB, with LCB as the surviving
corporation;

         WHEREAS, BANCORP, LMC and LCB each agree that it is in the best
interests of the corporations to determine and fix the Conversion Rate; and

         WHEREAS, BANCORP, LMC and LCB desire to amend the Agreement to fix the
Conversion Rate, to make corresponding changes to the Agreement to delete the
language providing the formula for the calculation of the Conversion Rate, and
to change the termination date in Sections 8.1.10 and 8.1.11 of the Agreement;

         NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, BANCORP, LMC and LCB hereto agrees
as follows:

1.       Amendment of ARTICLE 1. DEFINITIONS of the Agreement. The following
         definitions shall be deleted from ARTICLE 1.

                        "BANCORP Average Trading Price"
                        "Determination Date"
                        "LCB's Costs Associated With the Transaction"
                        "Per Share Merger Price"

         The following definition shall be revised to read as follow:

                        "Conversion Rate" shall mean .6905.

2.       Deletion of Section 5.5.2 of the Agreement. Section 5.5.2 of the
         Agreement shall be deleted in its entirety.

3.       Deletion of Section 5.8 of the Agreement. Section 5.8 of the Agreement
         shall be deleted in its entirety.

4.       Deletion of Section 7.2.12 of the Agreement. Section 7.2.12 of the
         Agreement shall be deleted in its entirety.




<PAGE>   439

5.       Amendment of Section 8.1.10 of the Agreement. Section 8.1.10 of the
         Agreement is amended to read in full as follows:

                                    8.1.10 By LCB upon the failure of any of the
                  conditions specified in Section 7.3 to have been satisfied
                  prior to March 31, 1999; or

6.       Amendment of Section 8.1.11 of the Agreement. Section 8.1.11 of the
         Agreement is amended to read in full as follows:

                                    8.1.11 By BANCORP upon the failure of any of
                  the conditions specified in Section 7.2 to have been satisfied
                  prior to March 31, 1999;

7.       References. Upon execution and delivery of this Amendment, all
         references in the Agreement to the "Agreement," and the provisions
         thereof, shall be deemed to refer to the Agreement, as amended by this
         Amendment.

8.       No other Amendments or Changes. Except as expressly amended or modified
         by this Agreement, all of the terms and conditions of the Agreement
         shall remain unchanged and in full force and effect.

9.       Definitions. All capitalized terms used herein and not otherwise
         defined or amended shall have the meanings given to them in the
         Agreement.



                                       2
<PAGE>   440


IN WITNESS WHEREOF, the parties hereto have duly executed this Amendment as of
the day and year first above written.


WESTERN SIERRA BANCORP                   LAKE COMMUNITY BANK



By: /s/ Gary D. Gall                      By:   /s/ Douglas A. Nordell
    --------------------------------            --------------------------------
Name: Gary D. Gall, President & CEO       Name: Douglas A. Nordell
      ------------------------------            --------------------------------



By: /s/ O. I. Scariot                     By:   /s/ Howard Van Lente
    --------------------------------            --------------------------------
Name: O. I. Scariot                       Name: Howard Van Lente
      ------------------------------            --------------------------------


LMC MERGER COMPANY



By: /s/ Douglas A. Nordell
    --------------------------------
Name: Douglas A. Nordell
      ------------------------------



By: /s/ Howard Van Lente
    --------------------------------
Name: Howard Van Lente
      ------------------------------



                                        3



<PAGE>   441
                                                                      EXHIBIT II


                AGREEMENT AND PLAN OF REORGANIZATION AND MERGER


                               DATED: JULY 2, 1998



                                  BY AND AMONG



                             WESTERN SIERRA BANCORP

                                       AND

                         ROSEVILLE 1ST COMMUNITY BANCORP


<PAGE>   442

                 AGREEMENT AND PLAN OF REORGANIZATION AND MERGER


        This AGREEMENT AND PLAN OF REORGANIZATION AND MERGER (the
"Agreement") is entered into as of July 2, 1998 by and among WESTERN SIERRA
BANCORP, a California corporation ("BANCORP"), and Roseville 1st Community
Bancorp, a California corporation ("ROSE").


                                    RECITALS:

        WHEREAS, the respective Boards of Directors of ROSE and BANCORP have
determined that it is in the best interests of ROSE and BANCORP and their
respective shareholders for ROSE to be merged with BANCORP, upon the terms and
subject to the conditions set forth in this Agreement and in accordance with the
California Corporations Code and other applicable laws;

        WHEREAS, Roseville 1st National Bank ("R1NB") is a wholly-owned
subsidiary of ROSE and Western Sierra National Bank ("BANK") is a wholly-owned
subsidiary of BANCORP;

        WHEREAS, each of the Boards of Directors of ROSE and BANCORP have
approved this Agreement and the transactions contemplated hereby;

        WHEREAS, ROSE's and BANCORP's Boards of Directors have resolved to
recommend approval of the merger of ROSE and BANCORP to their respective
shareholders; and

        WHEREAS, upon the consummation of the Merger of ROSE with BANCORP, R1NB
shall become a wholly-owned subsidiary of BANCORP.

        NOW, THEREFORE, in consideration of these premises and the
representations, warranties and agreements herein contained, ROSE and BANCORP
hereby agree as follows:

                             ARTICLE 1. DEFINITIONS

As used in this Agreement, the following terms shall have the meanings set forth
below:

        "Acquisition Event" shall mean any of the following:

        (a)    Prior to the termination of this Agreement, either ROSE or
               BANCORP shall have authorized, recommended, publicly proposed or
               publicly announced an intention to authorize, recommend or
               propose, or shall have entered or announced an intention to enter
               into a letter of intent, an agreement-in-principle or a
               definitive agreement with any Person (other than ROSE, BANCORP or
               any of their respective Subsidiaries) to effect, an Acquisition
               Transaction or failed to publicly oppose a Tender Offer or an
               Exchange Offer (as defined below). As used herein, the term
               "Acquisition Transaction" shall mean (i) a merger, consolidation
               or similar transaction involving ROSE, BANCORP or any of their
               respective Subsidiaries (other than internal


                                        1

<PAGE>   443

               mergers, reorganizations, consolidations or dissolutions
               involving only existing Subsidiaries), (ii) the disposition, by
               sale, lease, exchange, dissolution or liquidation, or otherwise,
               of all or substantially all of the assets of ROSE or BANCORP or
               any asset or assets of ROSE or BANCORP the disposition or lease
               of which would result in a material change in the business or
               business operations of ROSE or BANCORP, a transfer of any shares
               of stock or other securities of ROSE or BANCORP by ROSE or
               BANCORP, or a material change in the assets, liabilities or
               results of operations or the future prospects of ROSE or BANCORP,
               including, but not limited to a grant of an option entitling any
               Person to acquire any shares of stock of ROSE or BANCORP or any
               assets material to the business of ROSE or BANCORP; or (iii) the
               issuance, other than pursuant to outstanding stock options, sale
               or other disposition by ROSE or BANCORP (including, without
               limitation, by way of merger, consolidation, share exchange or
               any similar transaction) of shares of ROSE Common Stock or
               BANCORP Common Stock or other Equity Securities, or the grant of
               any option, warrant or other right to acquire shares of ROSE
               Common Stock or BANCORP Common Stock or other Equity Securities,
               representing directly, or on an as-exercised, as-exchanged or
               as-converted basis (in the case of options, warrants, rights or
               exchangeable or convertible Equity Securities), 15% or more of
               the voting securities of ROSE or BANCORP;

        (b)    Prior to termination of this Agreement (i) any Person (other than
               a person who is a party to a Director Shareholder Agreement)
               shall have increased the number of shares of ROSE Common Stock or
               BANCORP Common Stock over which such person has beneficial
               ownership (as such term is defined in Rule 13d-3 promulgated
               under the Exchange Act) by a number that is greater than 1% of
               the then outstanding shares of ROSE Common Stock or BANCORP
               Common Stock if, after giving effect to such increase, such
               Person owns, beneficially, more than 5% of the outstanding shares
               of ROSE Common Stock or BANCORP Common Stock, or (ii) any "group"
               (as such term is defined under the Exchange Act) shall have been
               formed which beneficially owns, or has the right to acquire
               beneficial ownership of, more than 5% of the then outstanding
               shares of ROSE Common Stock or BANCORP Common Stock; or

        (c)    The approval by ROSE's or BANCORP's shareholders, or the
               consummation by ROSE or BANCORP, of any Acquisition Transaction
               as described in Subsection (a) of this Paragraph.

        "Acquisition Proposal" shall have the meaning given such term in Section
6.2.5 and 6.4.12.

        "Affected Party" shall have the meaning given to it in Section 5.7.

        "Affiliate" or "affiliate" shall mean, with respect to any other Person,
any Person that, directly or indirectly, controls or is controlled by or is
under common control with such Person.

        "Affiliate Agreements" shall have the meaning given to such term in
Section 5.3.3.

        "BANK" shall mean Western Sierra National Bank.


                                        2

<PAGE>   444

        "BANCORP" shall mean Western Sierra Bancorp.

        "BANCORP Book Value Per Share" shall mean the sum of the Total
Shareholders' Equity for BANCORP as of the Determination Date (after expensing
BANCORP's Costs Associated With the Transaction) which shall reflect the
exercise of all stock options of BANCORP which would be exercisable at the
Closing and have an exercise price which is less than book value, whether or not
such options are exercised, divided by the total number of shares of BANCORP
Common Stock outstanding at the Closing Date which for purposes of this
calculation shall include the number of stock options included in the
calculation above, whether or not such options are exercised prior to the
Closing Date. Furthermore, BANCORP Book Value Per Share shall not reflect the
prior consummation of the acquisition of Lake Community Bank by BANCORP. The
calculation of BANCORP Book Value Per Share shall be performed by Perry-Smith &
Co. or such other party agreed to by BANCORP and ROSE.

        "BANCORP Collateralizing Real Estate" shall have the meaning given to
such term in Section 4.19.1.

        "BANCORP's Costs Associated With the Transaction" shall mean all legal,
accounting, professional and regulatory filing costs incurred or to be incurred
by BANCORP for the transaction up to the Closing Date which have not been
expensed by BANCORP by the Determination Date.

        "BANCORP Common Stock" shall mean the common stock, no par value per
share, of BANCORP.

        "BANCORP Documents" shall have the meaning given to such term in Section
4.6.2.

        "BANCORP Fairness Opinion" shall have the meaning given to such term in
Section 7.2.9.

        "BANCORP Filings" shall have the meanings given such term in Section
4.6.1.

        "BANCORP Financial Statements" shall mean the financial statements of
BANCORP for the year ended December 31, 1997.

        "BANCORP Market Value Per Share" shall mean the last trade of BANCORP
Common Stock prior to the Effective Time.

        "BANCORP Material Adverse Event" shall have the meaning given to such
term in Section 8.1.9

        "BANCORP Properties" shall have the meaning given to such term in
Section 4.19.1.

        "BANCORP Stock Plans" shall have the meaning set forth in Section 4.5.

        "BANCORP Superior Proposal" shall have the meaning set forth in Section
6.4.12.


                                        3

<PAGE>   445

        "Benefit Arrangement" shall have the meaning given such term in Section
3.21.4.

        "BHCA" shall mean the Bank Holding Company Act of 1956, as amended.

        "Business Day" shall mean any day, other than a Saturday, Sunday or any
other day, such as a legal holiday, on which California state banks in
California are not open for substantially all their banking business.

        "California Corporations Code" shall mean the General Corporation Law of
the State of California.

        "Classified Assets" shall have the meaning given to such term in Section
6.1.15.

        "Closing" shall have the meaning given to such term in Section 2.1.

        "Closing Date" shall have the meaning given to such term in Section 2.1.

        "Closing Schedules" shall have the meaning given to such term in Section
5.7.

        "Conversion Rate" shall mean the fraction, the numerator of which is the
ROSE Book Value Per Share, and the denominator of which is the BANCORP Book
Value Per Share.

        "Default" shall mean, as to any party to this Agreement, a failure by
such party to perform, in any material respect, any of the agreements or
covenants of such party contained in Articles 5 or 6.

        "Determination Date" shall mean the last business day of the calendar
month immediately preceding the calendar month in which the Effective Time
occurs.

        "Director Shareholder Agreement" shall have the meaning given such term
in Section 7.2.10.

        "Dissenting Shares" shall mean shares of ROSE Common Stock or BANCORP
Common Stock which come within all of the descriptions set forth in
Subparagraphs (1), (2), (3) and (4) of Paragraph (b) of Section 1300 of the
California Corporations Code.

        "Dissenting Shareholder Notices" shall mean the notice required to be
given to record holders of Dissenting Shares pursuant to Paragraph (a) of
Section 1301 of the California Corporations Code.

        "Effective Time" shall have the meaning given such term in Section 2.1.

        "Employee Plan" shall have the meaning given such term in Section
3.21.3.

        "Environmental Laws" shall mean and include any and all laws, statutes,
ordinances, rules, regulations, orders, or determinations of any Governmental
Entity pertaining to health or to the environment, including, without
limitation, the Clean Air Act, as amended, the Comprehensive Environmental
Response, Compensation and Liability Act of 1980, as


                                        4

<PAGE>   446

amended ("CERCLA"), the Federal Water Pollution Control Act Amendments, the
Occupational Safety and Health Act of 1970, as amended, the Resource
Conservation and Recovery Act of 1976, as amended ("RCRA"), the Hazardous
Materials Transportation Act of 1975, as amended, the Safe Drinking Water Act,
as amended, and the Toxic Substances Control Act, as amended.

        "Equity Securities" shall have the meaning given to such term in the
Exchange Act.

        "ERISA" shall mean the Employee Retirement Income Security Act of 1974,
as amended.

        "Exchange Act" shall mean the Securities Exchange Act of 1934, as
amended.

        "Exchange Agent" shall mean Western Sierra National Bank, or such other
Person as BANCORP shall have appointed to perform the duties set forth in
Section 2.8.

        "Exchange Offer" shall mean the commencement (as such term is defined in
Rule 14d-2 under the Exchange Act) of an exchange offer or the filing by any
Person of a registration statement under the Securities Act with respect to an
exchange offer to purchase any shares of ROSE Common Stock or BANCORP Common
Stock such that, upon consummation of such offer, such Person would own or
control 15% or more of the then outstanding shares of ROSE Common Stock or
BANCORP Common Stock.

        "FDIC" shall mean the Federal Deposit Insurance Corporation.

        "Federal Reserve Board" shall mean the Board of Governors of the Federal
Reserve System.

        "GAAP" shall mean generally accepted accounting principles.

        "Governmental Entity" shall mean any court, federal, state, local or
foreign government or any administrative agency or commission or other
governmental authority or instrumentality whatsoever.

        "Hazardous Substances" shall have the meaning given such term in Section
3.23.4.

        "IRC" shall mean the Internal Revenue Code of 1986, as amended.

        "Joint Proxy Statement/Prospectus" shall have the meaning given to such
term in Section 3.7.2.

        "Knowledge" shall mean, with respect to any representation or warranty
contained in this Agreement; the actual knowledge, after reasonable inquiry, of
any director or executive officer of ROSE or BANCORP.

        "Last Regulatory Approval" shall mean the final Requisite Regulatory
Approval required, from any Governmental Entity under applicable federal laws of
the United States and laws of any state having jurisdiction over the Merger, to
permit the parties to consummate the Merger.


                                        5

<PAGE>   447

        "Material Adverse Effect" shall mean a material adverse effect: (i) on
the business, assets, results of operations, financial condition or prospects of
a Person and its subsidiaries, if any, taken as a whole (unless specifically
indicated otherwise); or (ii) on the ability of a Person that is a party to this
Agreement to perform its obligations under this Agreement or to consummate the
transactions contemplated by this Agreement.

        "Merger" shall have the meaning set forth in Section 2.1.

        "Merger Agreement" shall have the meaning given to such term in Section
2.1.

        "New Certificates" shall have the meaning given to such term in Section
2.8.1.

        "OCC" shall mean Office of the Comptroller of the Currency.

        "OREO" shall have the meaning given such term in Section 3.13.

        "Perfected Dissenting Shares" shall mean Dissenting Shares as to which
the recordholder has made demand on ROSE or BANCORP in accordance with Paragraph
(b) of Section 1301 of the California Corporations Code and has not withdrawn
such demand prior to the Effective Time.

        "Persons" or "persons" shall mean an individual, corporation,
partnership, limited liability company, joint venture, trust or unincorporated
organization, Governmental Entity or any other legal entity whatsoever.

        "Registration Statement" shall have the meaning given to such term in
Section 3.7.2.

        "Regulatory Authority" shall mean any Governmental Entity, the approval
of which is legally required for consummation of the Merger.

        "Requisite Regulatory Approvals" shall have the meaning set forth in
Section 7.1.2.

        "Returns" shall mean all returns, declarations, reports, statements, and
other documents required to be filed with respect to federal, state, local and
foreign Taxes, and the term "Return" means any one of the foregoing Returns.

        "ROSE" shall mean Roseville 1st Community Bancorp.

        "ROSE Book Value Per Share" shall mean the sum of the Total
Shareholders' Equity for ROSE as of the Determination Date (after expensing
ROSE's Costs Associated With the Transaction) which shall reflect the exercise
of all stock options of ROSE which would be exercisable at the Closing and have
an exercise price which is less than book value, whether or not such options are
exercised, divided by the total number of shares of ROSE Common Stock
outstanding at the Closing Date which for purposes of this calculation shall
include the number of stock options included in the calculation above, whether
or not such options are exercised prior to the Closing Date. Furthermore, ROSE
Book Value Per Share shall include the present value (as of the Determination
Date) of ROSE's net operating loss carryforward


                                        6

<PAGE>   448

to the extent that such net operating loss carryforward will be available to
BANCORP after the Effective Time. The calculation of ROSE Book Value Per Share
shall be performed by Perry-Smith & Co. or such other party agreed to by ROSE
and BANCORP.

        "ROSE Certificates" shall have the meaning given such term in Section
2.8.1.

        "ROSE Collateralizing Real Estate" shall have the meaning given such
term in Section 3.23.1.

        "ROSE Common Stock" shall mean the common stock, no par value, of ROSE.

        "ROSE's Costs Associated With the Transaction" shall mean all legal,
accounting and professional costs incurred or to be incurred by ROSE for the
transaction up to the Closing Date which have not been expensed by ROSE by the
Determination Date.

        "ROSE Documents" shall have the meaning given to such term in Section
3.6.2.

        "ROSE Fairness Opinion" shall have the meaning given to such term in
Section 7.3.7.

        "ROSE Filings" shall have the meaning given such term in Section 3.6.1.

        "ROSE Financial Statements" shall have the meaning given to such term in
Section 3.7.3.

        "ROSE Material Adverse Event" shall have the meaning given such term in
Section 8.1.8.

        "ROSE Properties" shall have the meaning given such term in Section
3.23.1.

        "ROSE Stock Options" shall mean any options to purchase any shares of
ROSE Common Stock or any other Equity Securities of ROSE granted on or prior to
the Effective Time, whether pursuant to the ROSE Stock Option Plan or otherwise.

        "ROSE Stock Option Plan" shall mean ROSE's written Stock Option Plan as
described in Schedule 3.5 and 3.24 hereto.

        "ROSE Superior Proposal" shall have the meaning set forth in Section
6.2.5.

        "R1NB" shall mean Roseville 1st National Bank.

        "SEC" shall mean the Securities and Exchange Commission.

        "Securities Act" shall mean the Securities Act of 1933, as amended.

        "Subsidiary" shall mean, with respect to any corporation (the "parent"),
any other corporation, association or other business entity of which more than
50% of the shares of the Voting Stock are owned or controlled, directly or
indirectly, by the parent or by one or more Subsidiaries of the parent, or by
the parent and one or more of its Subsidiaries.


                                        7

<PAGE>   449

        "Surviving Corporation" shall have the meaning given to such term in
Section 2.1.

        "Taxes" shall mean all federal, state, local and foreign net income,
gross income, gross receipts, sales, use, ad valorem, transfer, franchise,
profits, license, lease, service, service use, withholding, payroll, employment,
excise, severance, stamp, occupation, premium, property, windfall profits,
customs, duties, or other taxes, together with any interest and any penalties,
additions to tax, or additional amounts with respect thereto, and the term "Tax"
means any one of the foregoing Taxes.

        "Tax Filings" shall mean any applications, reports, statements or other
Returns required to be filed with any local, state or federal Governmental
Entity before the Merger may become effective, including, but not limited to,
any filing required to be made with the California Franchise Tax Board to obtain
a Tax Clearance Certificate for the Merger.

        "Tender Offer" shall mean the commencement (as such term is defined in
Rule 14d-2 under the Exchange Act) of a tender offer or the filing by any person
of a registration statement under the Securities Act with respect to, a tender
offer to purchase any shares of ROSE Common Stock or BANCORP Common Stock such
that, upon consummation of such offer, such person would own or control 15% or
more of the then outstanding voting securities of ROSE or BANCORP.

        "Understanding" shall have the meaning set forth in Section 6.1.5.

        "Voting Securities" or "Voting Stock" shall mean the stock or other
securities or any other interest entitling the holders thereof to vote in the
election of the directors, trustees or Persons performing similar functions of
the Person in question, including, without limitation, nonvoting securities that
are convertible or exchangeable into voting securities, but shall not include
any stock or other interest so entitling the holders thereof to vote only upon
the happening of a contingency (other than a conversion or exchange thereof into
voting securities), whether or not such contingency has occurred.

                              ARTICLE 2. THE MERGER

        Section 2.1 THE MERGER. Subject to the terms and conditions of this
Agreement, as promptly as practicable following the receipt of the Last
Regulatory Approval and the expiration of all applicable waiting periods, ROSE
shall be merged with BANCORP, with BANCORP being the Surviving Corporation of
the merger, all pursuant to the Agreement of Merger attached to this Agreement
as Exhibit 2.1 (the "Merger Agreement") and in accordance with the applicable
provisions of the California Corporations Code (the "Merger"). The closing of
the Merger (the "Closing") shall take place at a location and time and Business
Day to be designated by BANCORP and reasonably concurred to by ROSE (the
"Closing Date") which shall not, however, be later than thirty (30) days after
receipt of the Last Regulatory Approval and expiration of all applicable waiting
periods. The Merger shall be effective when the Merger Agreement (together with
any other documents required by law to effectuate the Merger) shall have been
filed with the Secretary of State of the State of California. When used in this
Agreement, the term "Effective Time" shall mean the time of filing of the Merger
Agreement with the Secretary of State, and "Surviving Corporation" shall mean
BANCORP.


                                        8

<PAGE>   450

        Section 2.2 EFFECT OF MERGER. By virtue of the Merger and at the
Effective Time, all of the rights, privileges, powers and franchises and all
property and assets of every kind and description of ROSE and BANCORP shall be
vested in and be held and enjoyed by the Surviving Corporation, without further
act or deed, and all the estates and interests of every kind of ROSE and
BANCORP, including all debts due to either of them, shall be as effectively the
property of the Surviving Corporation as they were of ROSE and BANCORP
immediately prior to the Effective Time, and the title to any real estate vested
by deed or otherwise in either ROSE or BANCORP shall not revert or be in any way
impaired by reason of the Merger; and all rights of creditors and liens upon any
property of ROSE and BANCORP shall be preserved unimpaired and all debts,
liabilities and duties of ROSE and BANCORP shall be debts, liabilities and
duties of the Surviving Corporation and may be enforced against it to the same
extent as if such debts, liabilities and duties had been incurred or contracted
by it, and none of such debts, liabilities or duties shall be expanded,
increased, broadened or enlarged by reason of the Merger.

        Section 2.3 ARTICLES OF INCORPORATION AND BYLAWS. The Articles of
Incorporation and Bylaws of BANCORP in effect immediately prior to the Effective
Time shall be the Articles of Incorporation and Bylaws of the Surviving
Corporation until amended and the name of the Surviving Corporation shall be
"Western Sierra Bancorp."

        Section 2.4 CONVERSION OF BANCORP STOCK. The authorized and issued
capital stock of BANCORP immediately prior to the Effective Time, on and after
the Effective Time, pursuant to the Merger Agreement and without any further
action on the part of BANCORP shall remain as the common stock of the Surviving
Corporation.

        Section 2.5 CONVERSION OF ROSE STOCK OPTIONS. At the Effective Time, all
outstanding rights with respect to ROSE Common Stock pursuant to stock options
under the ROSE Stock Option Plan shall be converted into and become equivalent
rights with respect to BANCORP Common Stock at the applicable Conversion Rate
with a corresponding adjustment in the option price, and BANCORP shall assume
each ROSE Stock Option in accordance with the terms of ROSE Stock Option Plans
and the stock option agreement by which it is evidenced.

        Section 2.6 CONVERSION OF ROSE COMMON STOCK. Except as provided in
Section 2.7, each share of ROSE Common Stock shall be converted at the Effective
Time into and become the right to receive that number of shares of duly
authorized, validly issued, fully paid and nonassessable shares of BANCORP
Common Stock equal to the Conversion Rate, subject to adjustment, if any, as
provided in any other section of this Agreement; provided, however, that the
shares held by any shareholder who properly exercises dissenters' rights
provided under the California Corporations Code, shall not be so converted and
in lieu of such conversion shall be treated in accordance with the provisions of
the California Corporations Code.

        Section 2.7 FRACTIONAL SHARES. No fractional shares of BANCORP Common
Stock shall be issued in the Merger. In lieu thereof, each holder of ROSE Common
Stock who would otherwise be entitled to receive a fractional share shall
receive an amount in cash equal to the product (rounded to the nearest
hundredth) obtained by multiplying (a) BANCORP Market Value Per Share by (b) the


                                        9

<PAGE>   451

fraction of a share of BANCORP Common Stock to which such holder would otherwise
be entitled. No such holder shall be entitled to dividends or other rights in
respect of any such fraction.

        Section 2.8 EXCHANGE PROCEDURES. On or as soon as practicable after the
Effective Time, (i) BANCORP will deliver to the Exchange Agent: (i) certificates
representing the number of shares of BANCORP Common Stock issuable in the
Merger; and (ii) cash for the payout of fractional shares.

               2.8.1 Upon surrender to the Exchange Agent for cancellation of
one or more certificates for shares of ROSE Common Stock ("ROSE Certificates"),
accompanied by a duly executed letter of transmittal in proper form, the
Exchange Agent shall, as promptly as practicable thereafter, deliver to each
holder of such surrendered ROSE Certificates, certificates representing the
appropriate number of shares of BANCORP Common Stock ("New Certificates") and/or
checks for payment of cash in lieu of fractional shares, in respect of the ROSE
Certificates. In no event shall the holders of ROSE Certificates be entitled to
receive interest on cash amounts due them hereunder.

               2.8.2 Until a ROSE Certificate has been surrendered and exchanged
as herein provided, each share of ROSE Common Stock represented by such ROSE
Certificate shall represent, on and after the Effective Time, the right to
receive the Conversion Rate into which each such share of ROSE Common Stock
shown thereon has been converted as provided by Section 2.6, including the right
to vote such shares of BANCORP Common Stock. No dividends or other distributions
that are declared on any shares of BANCORP Common Stock into which any shares of
ROSE Common Stock have been converted at the Effective Time shall be paid to the
holder of such ROSE shares until the ROSE Certificates evidencing such ROSE
shares have been surrendered in exchange for New Certificates in the manner
herein provided, but upon such surrender, such dividends or other distributions,
from and after the Effective Time, will be paid to such holders. In no event
shall the holders entitled to receive such dividends or other distributions be
entitled to receive interest on such dividends or other distributions.

               2.8.3 No transfer taxes shall be payable by any shareholder in
respect of the issuance of New Certificates, except that if any New Certificate
is to be issued in a name other than that in which the ROSE Certificates
surrendered shall have been registered, it shall be a condition of such issuance
that the holder requesting such issuance shall properly endorse the certificate
or certificates and shall pay to BANCORP or the Exchange Agent any transfer
taxes payable by reason thereof, or of any prior transfer of such surrendered
certificate, or establish to the satisfaction of BANCORP or the Exchange Agent
that such taxes have been paid or are not payable.

               2.8.4 Any BANCORP Common Stock or cash delivered to the Exchange
Agent and not distributed pursuant to this Section 2.8 at the end of nine months
from the Effective Time, shall be returned to BANCORP, in which event the
Persons entitled thereto shall look only to BANCORP for payment thereof.

               2.8.5 Notwithstanding anything to the contrary set forth in
Sections 2.8.2 and 2.8.3 hereof, if any holder of ROSE Common Stock shall be
unable to surrender such holder's ROSE Certificates because such ROSE
Certificates have been lost or destroyed, such holder may deliver in lieu
thereof an affidavit and indemnity undertaking in form and substance and, if
required, with surety satisfactory to the Exchange Agent and BANCORP.


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<PAGE>   452

               2.8.6 The Exchange Agent shall not be entitled to vote or
exercise any rights of ownership with respect to the shares of BANCORP Common
Stock held by it from time to time hereunder, except that it shall receive and
hold all dividends or other distributions paid or distributed with respect to
such shares of BANCORP Common Stock for the account of the Persons entitled
thereto.

               2.8.7 After the Effective Time, there shall be no further
registration of transfers of the shares of ROSE Common Stock which were
outstanding immediately prior to the Effective Time. If, after the Effective
Time, ROSE Certificates representing such shares of ROSE Common Stock are
presented to BANCORP, they shall be canceled and exchanged for BANCORP Common
Stock as provided in this Article 2.

        Section 2.9 BOARD OF DIRECTORS OF BANCORP, R1NB AND BANK FOLLOWING THE
EFFECTIVE TIME. At the Effective Time four directors of ROSE named on Schedule
2.9 shall be appointed as directors of BANCORP to serve until the next annual
meeting of shareholders of BANCORP and until such successors are elected and
qualified. At the Effective Time, the then existing Board of Directors of R1NB
shall total ten directors with eight existing directors of R1NB and two persons
to be selected by BANCORP. At the Effective Time, the then existing Board of
Directors of BANK shall be increased by two persons to be selected by ROSE. The
Chairman of the Board of BANCORP shall be an attendee of the Board of Directors
of R1NB and all committees of the Board of Directors of R1NB.

        Section 2.10 TRUSTEES OF BANCORP'S KSOP FOLLOWING THE EFFECTIVE TIME.
Following the Effective Time, the trustees of BANCORP's KSOP shall be the those
trustees named on Schedule 2.10 as well as the President/Chief Executive Officer
of Lake Community Bank so long as BANCORP consummates the acquisition of Lake
Community Bank.

                ARTICLE 3. REPRESENTATIONS AND WARRANTIES OF ROSE

        ROSE represents and warrants to BANCORP as follows (it being understood
that all references to ROSE relative to the period on or before March 1, 1998
shall be deemed to refer to R1NB where appropriate in the context):

        Section 3.1 ORGANIZATION; CORPORATE POWER; ETC. ROSE is a California
corporation duly organized, validly existing and in good standing under the laws
of the State of California and has all requisite corporate power and authority
to own, lease and operate its properties and assets and to carry on its business
substantially as it is being conducted on the date of this Agreement. ROSE is a
bank holding company registered under the BHCA. Each of ROSE's Subsidiaries has
all requisite corporate power and authority to own, lease and operate its
properties and to carry on its business substantially as it is being conducted
on the date of this Agreement, except where the failure to have such power or
authority would not have a Material Adverse Effect on ROSE taken as a whole or
the ability of ROSE to consummate the transactions contemplated by this
Agreement. ROSE has all requisite corporate power and authority to enter into
this Agreement and, subject to obtaining all requisite Regulatory Approvals,
ROSE will have the requisite corporate power and authority to perform its
respective obligations hereunder with respect to the consummation of the
transactions contemplated hereby. ROSE is the sole shareholder of R1NB. R1NB is
a national banking


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<PAGE>   453

association authorized by the OCC to conduct a general banking business in
California. R1NB is a member of the Federal Reserve System. R1NB's deposits are
insured by the FDIC in the manner and to the full extent provided by law.
Neither the scope of business or ROSE, or any Subsidiary of ROSE, including
R1NB, nor the location of any of their respective properties, requires that ROSE
or any of its respective Subsidiaries be licensed or qualified to conduct
business in any jurisdiction other than those jurisdictions in which they are
licensed or qualified to do business as a foreign corporation, where the failure
to be so licensed or qualified would, individually or in the aggregate, have a
Material Adverse Effect on ROSE taken as a whole.

        Section 3.2 LICENSES AND PERMITS. Except as disclosed on Schedule 3.2,
ROSE and its Subsidiaries have all material licenses, certificates, franchises,
rights and permits that are necessary for the conduct of their respective
businesses, and such licenses are in full force and effect, except for any
failure to be in full force and effect that would not, individually or in the
aggregate, have a Material Adverse Effect on ROSE or on the ability of ROSE to
consummate the transactions contemplated by this Agreement. The properties,
assets, operations and businesses of ROSE, and those of its Subsidiaries,
including R1NB, are and have been maintained and conducted, in all material
respects, in compliance with all applicable licenses, certificates, franchises,
rights and permits.

        Section 3.3 SUBSIDIARIES. Other than as set forth on Schedule 3.3, there
is no corporation, partnership, joint venture or other entity in which ROSE
owns, directly or indirectly (except as pledgee pursuant to loans or stock or
other interest held as the result of or in lieu of foreclosure pursuant to
pledge or other security arrangement) any equity or other voting interest or
position.

        Section 3.4 AUTHORIZATION OF AGREEMENT; NO CONFLICTS.

               3.4.1 The execution and delivery of this Agreement and the Merger
Agreement by ROSE, and the consummation of the transactions contemplated hereby
and thereby, have been duly authorized by all necessary corporate action on the
part of ROSE, subject only to the approval of this Agreement, the Merger
Agreement and the Merger by ROSE's shareholders. This Agreement has been duly
executed and delivered by ROSE and constitutes a legal, valid and binding
obligation of ROSE, enforceable in accordance with its terms, except as the
enforceability thereof may be limited by bankruptcy, insolvency, moratorium or
other similar laws affecting the rights of creditors generally and by general
equitable principles. The Merger Agreement, upon the receipt of all Requisite
Regulatory Approvals and the due execution and filing of such Merger Agreement
in accordance with the applicable provisions of the California Corporations
Code, will constitute a legal, valid and binding obligation of ROSE, enforceable
in accordance with its terms, except as the enforceability thereof may be
limited by bankruptcy, insolvency, moratorium or other similar laws affecting
the rights of creditors generally and by general equitable principles.

               3.4.2 Except as disclosed on Schedule 3.4, the execution and
delivery of this Agreement and the Merger Agreement, and the consummation of the
transactions contemplated hereby and thereby, do not and will not conflict with,
or result in any violation of or default or loss of a material benefit under,
any provision of the Articles of Incorporation or Bylaws of ROSE, or except for
the necessity of obtaining Requisite Regulatory Approvals, and the approval of
the shareholders of ROSE, any material mortgage, indenture, lease, agreement or
other material instrument or any permit, concession, grant, franchise, license,
judgment, order, decree, statute, law, ordinance, rule or regulation applicable
to ROSE or any of its assets or properties, other than any


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<PAGE>   454

such conflict, violation, default or loss which (i) will not have a Material
Adverse Effect on ROSE, or on BANCORP following consummation of the Merger; or
(ii) will be cured or waived prior to the Effective Time. No material consent,
approval, order or authorization of, or registration, declaration or filing
with, any Governmental Entity is required in connection with the execution and
delivery of this Agreement or the Merger Agreement by ROSE or the performance by
ROSE of its obligations hereunder and thereunder, except for (a) filings
required in order to obtain the Requisite Regulatory Approvals; (b) the filing
and approval of the Merger Agreement with the Secretary of the State of
California; and (c) Tax Filings.

        Section 3.5 CAPITAL STRUCTURE. The authorized capital stock of ROSE
consists of 5,000,000 shares of ROSE Common Stock, no par value per share. On
the date of this Agreement, 319,972 shares of ROSE Common Stock were outstanding
and 75,000 shares of ROSE Common Stock were reserved for issuance pursuant to
outstanding ROSE Stock Options under the ROSE Stock Option Plan. All outstanding
shares of ROSE Common Stock are validly issued, fully paid and nonassessable and
do not possess any preemptive rights and were not issued in violation of any
preemptive rights or any similar rights of any Person. Except for the ROSE Stock
Options described on Schedule 3.5 to this Agreement, ROSE does not have
outstanding any options, warrants, calls, rights, commitments, securities or
agreements of any character to which ROSE is a party or by which it is bound
obligating ROSE to issue, deliver or sell, or cause to be issued, delivered or
sold, additional shares of capital stock of ROSE or obligating ROSE to grant,
extend or enter into any such option, warrant, call, right, commitment or
agreement.

        Section 3.6 ROSE FILINGS.

               3.6.1 Since January 1, 1995, ROSE and its Subsidiaries have filed
all reports, registrations and statements, together with any amendments required
to be made with respect thereto, that were required to be filed with (a) the
Federal Reserve Board or any Federal Reserve Bank; (b) the OCC; (c) the SEC; and
(d) any other applicable federal, state or local governmental or regulatory
authority. All such reports, registrations and filings, and all reports sent to
ROSE's shareholders during the three-year period ended December 31, 1997
(whether or not filed with any Regulatory Authority), are collectively referred
to as the "ROSE Filings. Except to the extent prohibited by law, copies of the
ROSE Filings have been made available to BANCORP. As of their respective filing
or mailing dates, each of the past ROSE Filings (a) was true and complete in all
material respects (or was amended so as to be so promptly following discovery of
any discrepancy); and (b) complied in all material respects with all of the
statutes, rules and regulations enforced or promulgated by the governmental or
regulatory authority with which it was filed (or was amended so as to be so
promptly following discovery of any such noncompliance) and none contained any
untrue statement of a material fact or omitted to state a material fact required
to be stated therein or necessary to make the statements therein, in light of
the circumstances under which they were made, not misleading. The ROSE Financial
Statements, together with the financial statements contained in the ROSE
Filings, have been prepared in accordance with GAAP, or applicable regulatory
accounting principles, applied on a consistent basis during the periods involved
(except as may be indicated in the notes thereto) and fairly present (subject,
in the case of the unaudited statements, to recurring adjustments normal in
nature and amount) the financial position of ROSE as of the dates thereof and
the results of its operations, cash flows and changes in shareholders' equity
for the periods then ended.


                                       13

<PAGE>   455

               3.6.2 ROSE, or R1NB, as the case may be, has filed each report,
schedule and amendments to each of the foregoing since January 1, 1995 that ROSE
or R1NB was required to file with the Federal Reserve Bank, the SEC or the OCC
(the "ROSE Documents"), all of which have been made available to BANCORP. As of
their respective dates, the ROSE Documents complied in all material respects
with the applicable requirements of the BHCA, the Exchange Act and the National
Bank Act, as the case may be, and the rules and regulations of the Federal
Reserve Bank, the SEC and the OCC thereunder applicable to such ROSE Documents,
and none of the ROSE Documents contained any untrue statement of a material fact
or omitted to state a material fact required to be stated therein or necessary
to make the statements therein, in light of the circumstances under which they
were made, not misleading. The financial statements of ROSE included in the ROSE
Filings comply in all material respects with applicable regulatory accounting
requirements and with the published rules and regulations of the Federal Reserve
Bank, the SEC or the OCC (as applicable) with respect thereto, and have been
prepared in accordance with GAAP, or applicable regulatory accounting
principles, applied on a consistent basis during the periods involved (except as
may be indicated in the notes thereto or, in the case of the unaudited
statements, as permitted by regulations of the Federal Reserve Bank or the OCC)
and fairly present (subject, in the case of the unaudited statements, to
recurring adjustments normal in nature and amount) the financial position of
ROSE as of the dates thereof and the consolidated results of its operations and
cash flows or changes in financial position for the periods then ended.

        Section 3.7 ACCURACY OF INFORMATION SUPPLIED.

               3.7.1 No representation or warranty of ROSE contained herein or
any statement, schedule, exhibit or certificate given or to be given by or on
behalf of ROSE or any of its Subsidiaries, including R1NB, to BANCORP in
connection herewith and none of the information supplied or to be supplied by
ROSE or its Subsidiaries, including R1NB, to BANCORP hereunder to the best of
ROSE's Knowledge contains or will contain any untrue statement of material fact
or omit to state any material fact required to be stated therein or necessary in
order to make the statements therein, in light of the circumstances under which
they are made, not misleading.

               3.7.2 None of the information supplied or to be supplied by ROSE
or relating to ROSE and approved by ROSE which is included or incorporated by
reference in (i) the Registration Statement on Form S-4 to be filed with the SEC
by BANCORP in connection with the issuance of shares of BANCORP Common Stock in
the Merger (including the Joint Proxy Statement of BANCORP and ROSE and the
Prospectus of BANCORP ("Joint Proxy Statement/Prospectus") constituting a part
thereof, the "Registration Statement") will, at the time the Registration
Statement becomes effective under the Securities Act, contain any untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading; (ii) the Joint Proxy
Statement/Prospectus and any amendment or supplement thereto will, at all times
from the date of mailing to shareholders of ROSE through the date of the meeting
of shareholders of ROSE to be held in connection with the Merger, contain any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading; and (iii) the
applications and forms to be filed with securities or "blue sky" authorities,
self regulatory authorities, or any Governmental Entity in connection with the
Merger, the issuance of any shares of BANCORP Common Stock in connection with
the Merger, or any Requisite Regulatory Approvals will, at the time filed or at
the


                                       14

<PAGE>   456

time they become effective, contain any untrue statement of a material fact or
omit to state any material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading. The Joint Proxy Statement/Prospectus (except for such
portions thereof that relate only to BANCORP and its Subsidiaries) will comply
in all material respects with the provisions of the Exchange Act and the rules
and regulations thereunder.

               3.7.3 ROSE has delivered or will deliver to BANCORP copies of:
(a) the audited balance sheets of R1NB as of December 31, 1997, 1996 and 1995
and the related statements of income, changes in shareholders' equity and cash
flows for the years then ended and the related notes to such financial
statements, all as audited by Perry-Smith & Company, independent public
accountants (the "ROSE Financial Statements"), and ROSE will hereafter until the
Closing Date deliver to BANCORP copies of additional financial statements of
ROSE and its Subsidiaries as provided in Sections 5.1.1(iii) and 6.1.11(iii).
The ROSE Financial Statements have been prepared (and all of said additional
financial statements will be prepared) in accordance with GAAP, or applicable
regulatory accounting principles applied on a consistent basis during the
periods involved (except as may be indicated in the notes thereto) consistently
followed throughout the periods covered by such statements, and present (and,
when prepared, will present) fairly the financial position of ROSE and its
Subsidiaries, including R1NB, as of the respective dates indicated and the
results of operations, cash flows and changes in shareholders' equity at the
respective dates and for the respective periods covered by such financial
statements (subject, in the case of the unaudited statements, to recurring
adjustments normal in nature and amount). In addition, ROSE has delivered or
made available to BANCORP copies of all management or other letters delivered to
ROSE or R1NB by its independent accountants in connection with any of the ROSE
Financial Statements or by such accountants or any consultant regarding the
internal controls or internal compliance procedures and systems of ROSE or R1NB
issued at any time since January 1, 1995, and will make available for inspection
by BANCORP or its representatives, at such times and places as BANCORP may
reasonably request, reports and working papers produced or developed by such
accountants or consultants.

        Section 3.8 COMPLIANCE WITH APPLICABLE LAWS. Except as disclosed on
Schedule 3.8, to the best of ROSE's Knowledge the respective businesses of ROSE
and its Subsidiaries are not being conducted in violation of any law, ordinance
or regulation, except for violations which individually or in the aggregate
would not have a Material Adverse Effect on ROSE, or BANCORP at or following the
Effective Time. Except as set forth in Schedule 3.8, to the Knowledge of ROSE no
investigation or review by any Governmental Entity with respect to ROSE or R1NB
is pending or threatened, nor has any Governmental Entity indicated to ROSE or
R1NB an intention to conduct the same.

        Section 3.9 LITIGATION. Except as set forth in Schedule 3.9, to the
Knowledge of ROSE there is no suit, action or proceeding or investigation
pending or threatened against or affecting ROSE or any of its Subsidiaries
which, if adversely determined, would have a Material Adverse Effect on ROSE or
its Subsidiaries; nor is there any judgment, decree, injunction, rule or order
of any Governmental Entity or arbitrator outstanding against ROSE or any of its
Subsidiaries that has, or which, insofar as reasonably can be foreseen, in the
future would have, any such Material Adverse Effect. Schedule 3.9 contains a
true, correct and complete list, including identification of the applicable
insurance policy covering such litigation, if any, subject to reservation of
rights, if any, the applicable deductible and the amount of any reserve
therefor, of all pending litigation in which ROSE


                                       15

<PAGE>   457

or any of its Subsidiaries is a named party of which ROSE has Knowledge, and
except as disclosed on Schedule 3.9, all of the litigation shown on such
Schedule is adequately covered by insurance in force, except for applicable
deductibles, or has been adequately reserved for in accordance with ROSE's prior
business practices.

        Section 3.10 AGREEMENTS WITH BANKING AUTHORITIES. Neither ROSE nor any
Subsidiary of ROSE is a party to any written agreement or memorandum of
understanding with, or order or directive from, any Governmental Entity.

        Section 3.11 INSURANCE. ROSE and its Subsidiaries have in full force and
effect policies of insurance with respect to their assets and businesses against
such casualties and contingencies and in such amounts, types and forms as are
customarily appropriate for their businesses, operations, properties and assets.
Schedule 3.11 contains a list of all policies of insurance and bonds carried and
owned by ROSE or any Subsidiary. None of ROSE or any of its Subsidiaries is in
default under any such policy of insurance or bond such that it can be canceled
and all material current claims outstanding thereunder have been filed in timely
fashion. ROSE and its Subsidiaries have filed claims with, or given notice of
claim to, their insurers or bonding companies in timely fashion with respect to
all material matters and occurrences for which they believe they have coverage.

        Section 3.12 TITLE TO ASSETS OTHER THAN REAL PROPERTY. Each of ROSE and
its respective Subsidiaries has good and marketable title to or a valid
leasehold interest in all properties and assets (other than real property which
is the subject to Section 3.13), it owns or leases, free and clear of all
mortgages, covenants, conditions, restrictions, easements, liens, security
interests, charges, claims, assessments and encumbrances, except for: (a) rights
of lessors, lessees or sublessees in such matters as are reflected in a written
lease; (b) encumbrances as set forth in the ROSE Financial Statements; (c)
current Taxes (including assessments collected with Taxes) not yet due which
have been fully reserved for; (d) encumbrances, if any, that are not substantial
in character, amount or extent and do not detract materially from the value, or
interfere with present use, or the ability of ROSE or its Subsidiary to sell or
otherwise dispose of the property subject thereto or affected thereby; and (e)
other matters as described in Schedule 3.12. Materially all such properties and
assets are, and require only routine maintenance to keep them, in good working
condition, normal wear and tear excepted.

        Section 3.13 REAL PROPERTY. Schedule 3.13 is an accurate list and
general description of all real property owned or leased by ROSE or any of its
Subsidiaries, including Other Real Estate Owned ("OREO"). Each of ROSE and its
respective Subsidiaries has good and marketable title to the real properties
that it owns, as described in such Schedule, free and clear of all mortgages,
covenants, conditions, restrictions, easements, liens, security interests,
charges, claims, assessments and encumbrances, except for (a) rights of lessors,
lessees or sublessees in such matters as are reflected in a written lease; (b)
current Taxes (including assessments collected with Taxes) not yet due and
payable; (c) encumbrances, if any, that are not substantial in character, amount
or extent and do not materially detract from the value, or interfere with
present use, or the ability of ROSE to dispose, of ROSE's interest in the
property subject thereto or affected thereby; and (d) other matters as described
in Schedule 3.13. ROSE and its Subsidiaries have valid leasehold interests in
the leaseholds they respectively hold, free and clear of all mortgages, liens,
security interest, charges, claims, assessments and encumbrances, except for (a)
claims of lessors, co-lessees or sublessees in such matters as are reflected in
a written lease; (b) title exceptions affecting the fee estate of the lessor
under such leases; and (c) other matters as described in Schedule 3.13. To the
best of ROSE's Knowledge, the activities


                                       16

<PAGE>   458

of ROSE and its Subsidiaries with respect to all real property owned or leased
by them for use in connection with their operations are in all material respects
permitted and authorized by applicable zoning laws, ordinances and regulations
and all laws and regulations of any Governmental Entity. Except as set forth in
Schedule 3.13, ROSE and its Subsidiaries enjoy quiet possession under all
material leases to which they are the lessees and all of such leases are valid
and in full force and effect, except as the enforceability thereof may be
limited by bankruptcy, insolvency, moratorium or other similar laws affecting
the rights of creditors generally and by general equitable principles.
Materially all buildings and improvements on real properties owned or leased by
ROSE or any of its Subsidiaries are in good condition and repair, and do not
require more than normal and routine maintenance, to keep them in such
condition, normal wear and tear excepted.

        Section 3.14 TAXES.

               3.14.1 FILING OF RETURNS. Except as set forth on Schedule 3.14.1,
ROSE and its Subsidiaries have duly prepared and filed or caused to be duly
prepared and filed all federal, state, and local Returns (for Tax or
informational purposes) which were required to be filed by or in respect of ROSE
and its Subsidiaries, or any of their properties, income and/or operations on or
prior to the Closing Date. As of the time they were filed, the foregoing Returns
accurately reflected the material facts regarding the income, business, asset,
operations, activities, status, and any other information required to be shown
thereon. Except as set forth on Schedule 3.14.1, no extension of time within
which ROSE or any of its Subsidiaries may file any Return is currently in force.

               3.14.2 PAYMENT OF TAXES. Except as disclosed on Schedule 3.14.2
with respect to all amounts in respect of Taxes imposed on ROSE or any
Subsidiary or for which ROSE or any Subsidiary is or could be liable, whether to
taxing authorities (as, for example, under law) or to other Persons (as, for
example, under Tax allocation agreements), with respect to all taxable periods
or portions of periods ending on or before the Closing Date, all applicable tax
laws and agreements have been or will be fully complied with in all material
respects, and all such amounts required to be paid by or on behalf of ROSE or
any Subsidiary to taxing authorities or others on or before the date hereof have
been paid.

               3.14.3 AUDIT HISTORY. Except as disclosed on Schedule 3.14.3,
there is no review or audit by any taxing authority of any Tax liability of ROSE
or any Subsidiary currently in progress of which ROSE has Knowledge. Except as
disclosed on Schedule 3.14.3, ROSE and its Subsidiaries have not received any
written notices within the three years preceding the Closing Date of any pending
or threatened audit, by the Internal Revenue Service or any state, local or
foreign agency, for any Returns or Tax liability of ROSE or any Subsidiary for
any period. ROSE and its Subsidiaries currently have no unpaid deficiencies
assessed by the Internal Revenue Service or any state, local or foreign taxing
authority arising out of any examination of any of the Returns of ROSE or any
Subsidiaries filed for fiscal years ended on or after December 31, 1993 through
the Closing Date, nor to the Knowledge of ROSE is there reason to believe that
any material deficiency will be assessed.

               3.14.4 STATUTE OF LIMITATIONS. Except as disclosed on Schedule
3.14.4, no agreements are in force or are currently being negotiated by or on
behalf of ROSE or any Subsidiaries for any waiver or for the extension of any
statute of limitations governing the time of assessments or collection of any
Tax. No closing agreements or compromises concerning Taxes of ROSE or any
Subsidiaries are currently pending.


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<PAGE>   459

               3.14.5 WITHHOLDING OBLIGATIONS. Except as set forth on Schedule
3.14.5, ROSE and its Subsidiaries have withheld from each payment made to any of
their respective officers, directors and employees, the amount of all applicable
Taxes, including, but not limited to, income tax, social security contributions,
unemployment contributions, backup withholding and other deductions required to
be withheld therefrom by any Tax law and have paid the same to the proper taxing
authorities within the time required under any applicable Tax law.

               3.14.6 TAX LIENS. There are no Tax liens, whether imposed by any
federal, state, local or foreign taxing authority, outstanding against any
assets owned by ROSE or its Subsidiaries, except for liens for Taxes that are
not yet due and payable.

               3.14.7 TAX RESERVES. ROSE and its Subsidiaries have made full and
adequate provision and reserve for all federal, state, local or foreign Taxes
for the current period for which Tax and information returns are not yet
required to be filed. The ROSE Financial Statements contain fair and sufficient
accruals for the payment of all Taxes for the periods covered by the ROSE
Financial Statements and all periods prior thereto.

               3.14.8 IRC SECTION 382 APPLICABILITY. None of ROSE or any of its
Subsidiaries, including any party joining in any consolidated return to which
ROSE is a member, underwent an "ownership change" as defined in IRC Section
382(g) within the "testing period" (as defined in IRC Section 382) ending
immediately before the Effective Time, and not taking into account any
transactions contemplated by this Agreement.

               3.14.9 DISCLOSURE INFORMATION. Within 45 days of the date of this
Agreement, ROSE will deliver to BANCORP a schedule setting forth the following
information with respect to ROSE and as of the most recent practicable date (as
well as on an estimated pro forma basis as of the Closing giving effect to the
consummation of the transactions contemplated hereby): (a) ROSE's basis in its
assets; (b) the amount of any net operating loss, net capital loss, unused
investment or other credit, unused foreign tax, or excess charitable
contribution allocable to ROSE; and (c) the amount of any deferred gain or loss
allocable to ROSE and arising out of any deferred intercompany transactions.

        Section 3.15 PERFORMANCE OF OBLIGATIONS. ROSE and its Subsidiaries have
performed all material obligations required to be performed by them to date and
none of ROSE or any of its Subsidiaries is in material default under or in
breach of any term or provision of any covenant, contract, lease, indenture or
any other agreement, written or oral, to which any is a party, is subject or is
otherwise bound, and no event has occurred that, with the giving of notice or
the passage of time or both, would constitute such a default or breach, where
such default or breach or failure to perform would have a Material Adverse
Effect on ROSE or its Subsidiaries. To ROSE's Knowledge, and except as disclosed
on Schedule 3.15 or in the portion of Schedule 3.16 that identifies 90-day past
due or classified or nonaccrual loans, no party with whom ROSE or any of its
Subsidiaries has an agreement that is of material importance to the businesses
of ROSE or its Subsidiaries is in default thereunder.

        Section 3.16 LOANS AND INVESTMENTS. Except as set forth on Schedule
3.16, all loans, leases and other extensions of credit, and guaranties, security
agreements or other agreements supporting any loans or extensions of credit, and
investments of ROSE or its Subsidiaries, including R1NB, are,


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<PAGE>   460

and constitute, in all material respects, the legal, valid and binding
obligations of the parties thereto and are enforceable against such parties in
accordance with their terms, except as the enforceability thereof may be limited
by applicable law and otherwise by bankruptcy, insolvency, moratorium or other
similar laws affecting the rights of creditors generally and by general
equitable principles. Except as described on Schedule 3.16, as of April 30,
1998, no loans or investments held by ROSE or any Subsidiary, including R1NB
are: (i) more than ninety days past due with respect to any scheduled payment of
principal or interest, other than loans on a nonaccrual status; (ii) classified
as "loss," "doubtful," "substandard" or "specially mentioned" by R1NB or any
banking regulators; or (iii) on a nonaccrual status in accordance with R1NB's
loan review procedures. Except as set forth on Schedule 3.16, none of such
assets (other than loans) are subject to any restrictions, contractual,
statutory or other, that would materially impair the ability of the entity
holding such investment to dispose freely of any such assets at any time, except
restrictions on the public distribution or transfer of any such investments
under the Securities Act and the regulations thereunder or state securities laws
and pledges or security interests given in connection with government deposits.
All loans, leases or other extensions of credit outstanding, or commitments to
make any loans, leases or other extensions of credit made by ROSE or R1NB to any
Affiliates of ROSE or R1NB are disclosed on Schedule 3.16. For outstanding loans
or extensions of credit where the original principal amounts are in excess of
$50,000 and which by their terms are either secured by collateral or supported
by a guaranty or similar obligation, the security interests have been duly
perfected in all material respects and have the priority they purport to have in
all material respects, other than by operation of law, and, in the case of each
guaranty or similar obligation, each has been duly executed and delivered to
ROSE or any Subsidiary, including R1NB, and to ROSE's Knowledge, is still in
full force and effect.

        Section 3.17 BROKERS AND FINDERS. Except as set forth on Schedule 3.17,
none of ROSE or any of its Subsidiaries is a party to or obligated under any
agreement with any broker or finder relating to the transactions contemplated
hereby, and neither the execution of this Agreement, the Merger Agreement, nor
the consummation of the transactions provided for herein or therein, will result
in any liability to any broker or finder. ROSE agrees to indemnify and hold
harmless BANCORP and its affiliates, and to defend with counsel selected by
BANCORP and reasonably satisfactory to ROSE, from and against any liability,
cost or expense, including attorneys' fees, incurred in connection with a breach
of this Section 3.17.

        Section 3.18 MATERIAL CONTRACTS. Schedule 3.18 to this Agreement
contains a complete and accurate written list of all material agreements,
obligations or understandings, written and oral, to which ROSE or any Subsidiary
is a party as of the date of this Agreement, except for loans and other
extensions of credit made by ROSE or R1NB in the ordinary course of its business
and those items specifically disclosed in the ROSE Financial Statements.

        Section 3.19 ABSENCE OF MATERIAL ADVERSE EFFECT. Since January 1, 1998,
the respective businesses of ROSE and its Subsidiaries, including R1NB, have
been conducted only in the ordinary course, in the same manner as theretofore
conducted, and no event or circumstance has occurred or is expected to occur
which to ROSE's Knowledge has had or which, with the passage of time or
otherwise, could reasonably be expected to have a Material Adverse Effect on
ROSE.


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<PAGE>   461

        Section 3.20 UNDISCLOSED LIABILITIES. Except as disclosed on Schedule
3.20, none of ROSE or any of its Subsidiaries to ROSE's Knowledge has any
liabilities or obligations, either accrued, contingent or otherwise, that are
material to ROSE and its Subsidiaries and that have not been: (a) reflected or
disclosed in the ROSE Financial Statements; or (b) incurred subsequent to
December 31, 1997 in the ordinary course of business. ROSE has no Knowledge of
any basis for the assertion against ROSE, or any of its Subsidiaries, of any
liability, obligation or claim (including without limitation that of any
Governmental Entity) that will have or cause, or could reasonably be expected to
have or cause, a Material Adverse Effect on ROSE that is not fully and fairly
reflected and disclosed in the ROSE Financial Statements or on Schedule 3.20.

        Section 3.21 EMPLOYEES; EMPLOYEE BENEFIT PLANS; ERISA.

               3.21.1 All material obligations of ROSE or its Subsidiaries for
payment to trusts or other funds or to any Governmental Entity or to any
individual, director, officer, employee or agent (or his or her heirs, legatees
or legal representatives) with respect to unemployment compensation benefits,
profit-sharing, pension or retirement benefits or social security benefits,
whether arising by operation of law, by contract or by past custom, have been
properly accrued for the periods covered thereby on the ROSE Financial
Statements and paid when due. All material obligations of ROSE or its
Subsidiaries, whether arising by operation of law, by contract or by past custom
for vacation or holiday pay, bonuses and other forms of compensation which are
payable to their respective directors, officers, employees or agents have been
properly accrued on the ROSE Financial Statements for the periods covered
thereby and paid when due. Except as set forth on Schedule 3.21.1, there are no
unfair labor practice complaints, strikes, slowdowns, stoppages or other
controversies pending or, to the Knowledge of ROSE, attempts to unionize or
controversies threatened between ROSE or any Subsidiary or Affiliate and or
relating to, any of their employees that are likely to have a Material Adverse
Effect on ROSE and its Subsidiaries, taken as a whole. None of ROSE or any
Subsidiary is a party to any collective bargaining agreement with respect to any
of their employees and, except as set forth on Schedule 3.21.1, none of ROSE or
any Subsidiary is a party to a written employment contract with any of their
respective employees and there are no understandings with respect to the
employment of any officer or employee of ROSE or any Subsidiary which are not
terminable by ROSE or such Subsidiary without liability on not more than thirty
(30) days' notice. Except as disclosed in the ROSE Financial Statements for the
periods covered thereby, all material sums due for employee compensation have
been paid and all employer contributions for employee benefits, including
deferred compensation obligations, and all material benefit obligations under
any Employee Plan (as defined in Section 3.21.3 hereof) or any Benefit
Arrangement (as defined in Section 3.21.4 hereof) have been duly and adequately
paid or provided for in accordance with plan documents. Except as set forth on
Schedule 3.21.1, no director, officer or employee of ROSE or any Subsidiary is
entitled to receive any payment of any amount under any existing agreement,
severance plan or other benefit plan as a result of the consummation of any
transaction contemplated by this Agreement or the Merger Agreement. To ROSE's
Knowledge, ROSE and its Subsidiaries have materially complied with all
applicable federal and state statutes and regulations which govern workers'
compensation, equal employment opportunity and equal pay, including, but not
limited to, all civil rights laws, Presidential Executive Order 1124, the Fair
Labor Standards Act of 1938, as amended, and the Americans with Disabilities
Act.

               3.21.2 ROSE has delivered as Schedule 3.21.2 a complete list of:

                      (a) All current employees of ROSE or any of its
Subsidiaries together with each employee's tenure with ROSE or such Subsidiary,
title or job classification, and the current annual rate of compensation
anticipated to be paid to each such employee; and


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<PAGE>   462

                      (b) All Employee Plans and Benefit Arrangements, including
all plans or practices providing for current compensation or accruals for active
Employees, including, but not limited to, all employee benefit plans, all
pension, profit-sharing, retirement, bonus, stock option, incentive, deferred
compensation, severance, long-term disability, medical, dental, health,
hospitalization, life insurance or other insurance plans or related benefits.

               3.21.3 Except as disclosed on Schedule 3.21.3, none of ROSE or
any of its Subsidiaries maintains, administers or otherwise contributes to any
"employee benefit plan," as defined in Section 3(3) of ERISA, which is subject
to any provisions of ERISA and covers any employee, whether active or retired,
of ROSE or any of its Subsidiaries (any such plan being herein referred to as an
"Employee Plan"). True and complete copies of each such Employee Plan, including
amendments thereto, have been previously delivered or made available to BANCORP,
together with (i) all agreements regarding plan assets with respect to such
Employee Plans, (ii) a true and complete copy of the annual reports for the most
recent three years (Form 5500 Series including, if applicable, Schedules A and B
thereto) prepared in connection with any such Employee Plan, (iii) a true and
complete copy of the actuarial valuation reports for the most recent three
years, if any, prepared in connection with any such Employee Plan covering any
active employee of ROSE or its Subsidiaries, (iv) a copy of the most recent
summary plan description of each such Employee Plan, together with any
modifications thereto, and (v) a copy of the most recent favorable determination
letter (if applicable) from the Internal Revenue Service for each Employee Plan.
None of the Employee Plans is a "multiemployer plan" as defined in Section 3(37)
of ERISA or a "multiple employer plan" as covered in Section 412(c) of the IRC,
and none of ROSE or any of its Subsidiaries has been obligated to make a
contribution to any such multiemployer or multiple employer plan within the past
five years. None of the Employee Plans of ROSE or any of its Subsidiaries is, or
for the last five years has been, subject to Title IV of ERISA. Each Employee
Plan which is intended to be qualified under Section 401(a) of the IRC is so
qualified and each trust maintained pursuant thereto is exempt from income tax
under Section 501(a) of the IRC, and none of ROSE or any of its Subsidiaries is
aware of any fact which has occurred which would cause the loss of such
qualification or exemption.

               3.21.4 Except as disclosed in Schedule 3.21.4, none of ROSE or
any of its Subsidiaries maintains (other than base salary and base wages) any
form of current or deferred compensation, bonus, stock option, stock
appreciation right, severance pay, salary continuation, retirement or incentive
plan or arrangement for the benefit of any director, officer or employee,
whether active or retired, of ROSE or any of its Subsidiaries or for any class
or classes of such directors, officers or employees. Except as disclosed in
Schedule 3.21.4, none of ROSE or any of its Subsidiaries maintains any group or
individual health insurance, welfare or similar plan or arrangement for the
benefit of any director, officer or employee of ROSE or any of its Subsidiaries,
whether active or retired, or for any class or classes of such directors,
officers or employees. Any such plan or arrangement described in this Section
3.21.4, copies of which have been delivered or made available to BANCORP, shall
be herein referred to as a "Benefit Arrangement."

               3.21.5 All Employee Plans and Benefit Arrangements are operated
in material compliance with the requirements prescribed by any and all statutes,
governmental or court orders, or governmental rules or regulations currently in
effect, including but not limited to ERISA and the IRC, applicable to such plans
or arrangements, and plan documents relating to any such plans or arrangements,
materially comply with or will be amended to materially comply with applicable
legal requirements. None of ROSE or any of its Subsidiaries, nor any Employee
Plan, nor any trusts


                                       21

<PAGE>   463

created thereunder, nor any trustee, administrator nor any other fiduciary
thereof, has engaged in a "prohibited transaction," as defined in Section 406 of
ERISA and Section 4975 of the IRC, that could subject ROSE or any of its
Subsidiaries or BANCORP to liability under Section 409 or 502(i) of ERISA or
Section 4975 of the IRC or that would adversely affect the qualified status of
such plans; each "plan official" within the meaning of Section 412 of ERISA of
each Employee Plan is bonded to the extent required by such Section 412; with
respect to each Employee Plan, to ROSE's Knowledge, no employee of ROSE or any
Subsidiary, nor any fiduciary of any Employee Plan, has engaged in any breach of
fiduciary duty as defined in Part 4 of Subtitle B of Title I of ERISA which
could subject ROSE or any of its Subsidiaries to liability if ROSE or any such
Subsidiary is obligated to indemnify such Person against liability. Except as
disclosed in Schedule 3.21.5, ROSE and its Subsidiaries have not failed to make
any material contribution or pay any amount due and owing as required by law or
the terms of any Employee Plan or Benefit Arrangement.

               3.21.6 Except as set forth on Schedule 3.21.6, no Employee Plan
or Benefit Arrangement has any material liability of any nature, accrued or
contingent, including, without limitation, liabilities for federal, state, local
or foreign taxes, interest or penalty other than liability for claims arising in
the course of the administration of each such Employee Plan. Except as set forth
on Schedule 3.21.6, to ROSE's Knowledge there is no pending or threatened legal
action, proceeding or investigation against any Employee Plan which could result
in material liability to such Employee Plan, other than routine claims for
benefits, and there is no basis for any such legal action, proceeding or
investigation.

               3.21.7 Each Benefit Arrangement which is a group health plan
(within the meaning of such term under IRC Section 4980B(g)(2)) materially
complies and has materially complied with the requirements of Section 601
through 608 of ERISA or Section 4980B of the IRC governing continuation coverage
requirements for employee-provided group health plans.

               3.21.8 Except as disclosed in Schedule 3.21.8, none of ROSE or
any of its Subsidiaries maintains any Employee Plan or Benefit Arrangement
pursuant to which any benefit or other payment will be required to be made by
ROSE or any of its Subsidiaries or Affiliates or pursuant to which any other
benefit will accrue or vest in any director, officer or employee of ROSE or any
Subsidiary or Affiliate thereof, in either case as a result of the consummation
of the transactions contemplated by this Agreement or the Merger Agreement.

        Section 3.22 POWERS OF ATTORNEY. No power of attorney or similar
authorization given by ROSE or any Subsidiary thereof is presently in effect or
outstanding other than powers of attorney given in the ordinary course of
business with respect to routine matters.

        Section 3.23 HAZARDOUS MATERIALS. Except as set forth on Schedule 3.23:

               3.23.1 Except for ordinary and necessary quantities of cleaning,
pest control and office supplies, and other small quantities of Hazardous
Substances that are used in the ordinary course of the respective businesses of
ROSE and its Subsidiaries and in compliance with applicable Environmental Laws,
or ordinary rubbish, debris and nonhazardous solid waste stored in garbage cans
or bins for regular disposal off-site, or petroleum contained in and de minimus
quantities discharged from motor vehicles in their ordinary operation on any of
the ROSE Properties (as defined below), ROSE and its Subsidiaries have not
engaged in the generation, use, manufacture, treatment,


                                       22

<PAGE>   464

transportation, storage (in tanks or otherwise), or the disposal, of Hazardous
Substances other than as permitted by and only in compliance with applicable
law. To ROSE's Knowledge, no material amount of Hazardous Substances have been
released, emitted or disposed of, or otherwise deposited, on, in or from any
real property which is now or has been previously owned since January 1, 1994,
or which is currently or during the past three years was leased, by ROSE or any
of its Subsidiaries, including OREO (collectively, the "ROSE Properties"), or to
ROSE's Knowledge, on or in any real property in which ROSE or any of its
Subsidiaries now holds any security interest, mortgage or other lien or interest
with an underlying obligation in excess of $25,000 ("ROSE Collateralizing Real
Estate"), except for (i) matters disclosed on Schedule 3.23; (ii) ordinary and
necessary quantities of cleaning, pest control and office supplies used and
stored in compliance with applicable Environmental Laws, or ordinary rubbish,
debris and nonhazardous solid waste stored in garbage cans or bins for regular
disposal off-site, or petroleum contained in, and de minimus quantities
discharged from, motor vehicles in their ordinary operation on such ROSE
Properties; and (iii) such releases, emissions, disposals or deposits which
constituted a violation of an Environmental Law but did not have a Material
Adverse Effect on the ROSE Property involved and would not result in the
incurrence or imposition of any liability, expense, penalty or fine against ROSE
or any of its Subsidiaries in excess of $25,000 individually or in the
aggregate. To ROSE's Knowledge, no activity has been undertaken on any of the
ROSE Properties since January l, 1994, and to the Knowledge of ROSE no
activities have been or are being undertaken on any of the ROSE Collateralizing
Real Estate, that would cause or contribute to:

                      (a) any of the ROSE Properties or ROSE Collateralizing
Real Estate becoming a treatment, storage or disposal facility within the
meaning of RCRA or any similar state law or local ordinance;

                      (b) a release or threatened release of any Hazardous
Substances under circumstances which would violate any Environmental Laws; or

                      (c) the discharge of Hazardous Substances into any soil,
subsurface water or ground water or into the air, or the dredging or filling of
any waters, that would require a permit or any other approval under the Federal
Water Pollution Control Act, 33 U.S.C. ss.1251 et seq., the Clean Air Act, as
amended, 42 U.S.C. ss.7401 et seq., or any similar federal or state law or local
ordinance; the cumulative effect of which would have a material adverse effect
on the ROSE Property or ROSE Collateralizing Real Estate involved.

               3.23.2 To the Knowledge of ROSE, there are not, and never have
been, any underground storage tanks located in or under any of the ROSE
Properties or the ROSE Collateralizing Real Estate.

               3.23.3 None of ROSE or any of its Subsidiaries has received any
written notice of, and to the Knowledge of ROSE none has received any verbal
notice of, any pending or threatened claims, investigations, administrative
proceedings, litigation, regulatory hearings or requests or demands for remedial
or responsive actions or for compensation, with respect to any of the ROSE
Properties or ROSE Collateralizing Real Estate, alleging noncompliance with or
violation of any Environmental Law or seeking relief under any Environmental Law
and none of the ROSE Properties or ROSE Collateralizing Real Estate is listed on
the United States Environmental Protection Agency's National Priorities List of
Hazardous Waste Sites, or, to the Knowledge of ROSE, any other list, schedule,
log, inventory or record of hazardous waste sites maintained by any federal,
state or local agency.


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<PAGE>   465

               3.23.4 "Hazardous Substances" shall mean any hazardous, toxic or
infectious substance, material, gas or waste which is regulated by any local,
state or federal Governmental Entity, or any of their agencies.

        Section 3.24 STOCK OPTIONS. Schedule 3.24 to this Agreement contains a
description of the ROSE Stock Option Plan and list of all ROSE Stock Options
outstanding, indicating for each: (a) the grant date; (b) whether vested or
unvested; (c) exercise price; and (d) a vesting schedule by optionee.

        Section 3.25 EFFECTIVE DATE OF REPRESENTATIONS, WARRANTIES, COVENANTS
AND AGREEMENTS. Each representation, warranty, covenant and agreement of ROSE
set forth in this Agreement shall be deemed to be made on and as of the date
hereof and as of the Effective Time.

              ARTICLE 4. REPRESENTATIONS AND WARRANTIES OF BANCORP

        BANCORP represents and warrants to ROSE that:

        Section 4.1 ORGANIZATION; CORPORATE POWER; ETC. BANCORP is a California
corporation duly organized, validly existing and in good standing under the laws
of the State of California and has all requisite corporate power and authority
to own, lease and operate its properties and assets and to carry on its business
substantially as it is being conducted on the date of this Agreement. BANCORP is
a bank holding company registered under the BHCA. Each of BANCORP's Subsidiaries
has all requisite corporate power and authority to own, lease and operate its
properties and to carry on its business substantially as it is being conducted
on the date of this Agreement, except where the failure to have such power or
authority would not have a Material Adverse Effect on BANCORP taken as a whole
or the ability of BANCORP to consummate the transactions contemplated by this
Agreement. BANCORP has all requisite corporate power and authority to enter into
this Agreement and, subject to obtaining all Requisite Regulatory Approvals,
BANCORP will have the requisite corporate power and authority to perform its
respective obligations hereunder with respect to the consummation of the
transactions contemplated hereby. BANCORP is the sole shareholder of BANK. BANK
is a national banking association authorized by the OCC to conduct a general
banking business in California. BANK is a member of the Federal Reserve System.
BANK's deposits are insured by the FDIC in the manner and to the full extent
provided by law. Neither the scope of business of BANCORP or any Subsidiary,
including BANK, nor the location of any of their respective properties, requires
that BANCORP or any of its respective Subsidiaries be licensed to conduct
business in any jurisdiction other than those jurisdictions in which they are
licensed or qualified to do business as a foreign corporation, where the failure
to be so licensed or qualified would, individually or in the aggregate, have a
Material Adverse Effect on BANCORP taken as a whole.

        Section 4.2 LICENSES AND PERMITS. Except as disclosed on Schedule 4.2,
BANCORP and its Subsidiaries have all material licenses, certificates,
franchises, rights and permits that are necessary for the conduct of their
respective businesses, and such licenses are in full force and effect, except
for any failure to be in full force and effect that would not, individually or
in the aggregate, have a


                                       24

<PAGE>   466

Material Adverse Effect on BANCORP taken as a whole, or on the ability of
BANCORP to consummate the transactions contemplated by this Agreement. The
properties, assets, operations and businesses of BANCORP and those of its
Subsidiaries, including BANK, are and have been maintained and conducted, in all
material respects, in compliance with all applicable licenses, certificates,
franchises, rights and permits.

        Section 4.3 SUBSIDIARIES. Other than as set forth on Schedule 4.3, there
is no corporation, partnership, joint venture or other entity in which BANCORP
owns, directly or indirectly (except as pledgee pursuant to loans or stock or
other interest held as the result of or in lieu of foreclosure pursuant to
pledge or other security arrangement) any equity or other voting interest or
position.

        Section 4.4 AUTHORIZATION OF AGREEMENT; NO CONFLICTS.

               4.4.1 The execution and delivery of this Agreement and the Merger
Agreement and the consummation of the transactions contemplated hereby and
thereby have been duly authorized by all necessary corporate action on the part
of BANCORP, subject only to the approval of this Agreement and the Merger
Agreement by BANCORP's shareholders. This Agreement has been duly executed and
delivered by BANCORP and constitutes a legal, valid and binding obligation of
BANCORP, enforceable in accordance with its terms, except as the enforceability
thereof may be limited by bankruptcy, insolvency, moratorium or other similar
laws affecting the rights of creditors generally and by general equitable
principles. The Merger Agreement, upon the receipt of all Requisite Regulatory
Approvals and the due execution and filing of such Merger Agreement in
accordance with the applicable provisions of the California Corporations Code,
will constitute a legal, valid and binding obligation of BANCORP, enforceable in
accordance with its terms, except as the enforceability thereof may be limited
by bankruptcy, insolvency, moratorium or other similar laws affecting the rights
of creditors generally or by general equitable principles.

               4.4.2 Except as discussed on Schedule 4.4, the execution and
delivery of this Agreement and the consummation of the transactions contemplated
hereby does not and will not conflict with, or result in any violation of or
default or loss of a material benefit under, any provision of the Articles of
Incorporation or Bylaws of BANCORP, or except for the necessity of obtaining the
Requisite Regulatory Approvals, and the approval of the shareholders of BANCORP,
any material mortgage, indenture, lease, agreement or other material instrument,
or any permit, concession, grant, franchise, license, judgment, order, decree,
statute, law, ordinance, rule or regulation applicable to BANCORP or any of its
assets or properties or any of its Subsidiaries, other than any such conflict,
violation, default or loss which (i) will not have a Material Adverse Effect on
BANCORP taken as a whole; or (ii) will be cured or waived prior to the Effective
Time. No material consent, approval, order or authorization of, or registration,
declaration or filing with, any Governmental Entity is required in connection
with the execution and delivery of this Agreement by BANCORP or the performance
by BANCORP of its obligations hereunder, except for (a) filings required in
order to obtain Requisite Regulatory Approvals; (b) the filing of the
Registration Statement (including the Joint Proxy Statement/Prospectus
constituting a part thereof) with the SEC relating to the Merger and the
declaration of effectiveness of the Registration Statement by the SEC and any
applicable state securities law regulatory authorities; (c) the filing and
approval of the Merger Agreement with the Secretary of the State of California;
(d) any approvals required to be obtained pursuant to the BHCA or the Federal
Deposit Insurance Act or any other required governmental approval for the
execution and delivery of this Agreement by BANCORP or the consummation of the
Merger; and (e) any


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<PAGE>   467

consents, authorizations, approvals, filings or exemptions required to be made
or obtained under the securities or "blue sky" laws of various jurisdictions in
connection with the issuance of shares of BANCORP Common Stock contemplated by
this Agreement.

        Section 4.5 CAPITAL STRUCTURE OF BANCORP. The authorized capital stock
of BANCORP consists of 10,000,000 shares of BANCORP Common Stock, no par value
per share and 10,000,000 shares of BANCORP preferred stock. On the date of this
Agreement 981,448 shares of BANCORP Common Stock were outstanding, 176,043
shares of BANCORP Common Stock were reserved for issuance pursuant to employee
stock option and other employee stock plans (the "BANCORP Stock Plans"), and no
shares of BANCORP preferred stock were outstanding or were reserved for issuance
by BANCORP. All outstanding shares of BANCORP Common Stock are validly issued,
fully paid and nonassessable and do not possess any preemptive rights and were
not issued in violation of any preemptive rights or any similar rights of any
Person. The issuance of the shares of BANCORP Common Stock proposed to be issued
pursuant to this Agreement at the Effective Time will have been duly authorized
by all requisite corporate action of BANCORP, and such shares, when issued as
contemplated by this Agreement, will constitute duly authorized, validly issued,
fully paid and nonassessable shares of BANCORP Common Stock, and will not have
been issued in violation of any preemptive or similar rights of any Person. As
of the date of this Agreement, and except for this Agreement and the BANCORP
Stock Plans, BANCORP does not have outstanding any options, warrants, calls,
rights, commitments, securities or agreements of any character to which BANCORP
is a party or by which it is bound obligating BANCORP to issue, deliver or sell,
or cause to be issued, delivered or sold, additional shares of capital stock of
BANCORP or obligating BANCORP to grant, extend or enter into any such option,
warrant, call, right, commitment or agreement.

        Section 4.6 BANCORP FILINGS.

               4.6.1 Since January 1, 1995, BANCORP and its Subsidiaries have
filed all reports, registrations and statements, together with any amendments
required to be made with respect thereto, that were required to be filed with
(a) the Federal Reserve Board or any Federal Reserve Bank; (b) the OCC; (c) the
SEC; and (d) any other applicable federal, state or local governmental or
regulatory authority. All such reports, registrations and filings including the
BANCORP Financial Statements are collectively referred to as the "BANCORP
Filings". Except to the extent prohibited by law, copies of the BANCORP Filings
have been made available to ROSE. As of their respective filing or mailing
dates, each of the past BANCORP Filings (a) was true and complete in all
material respects (or was amended so as to be so promptly following discovery of
any discrepancy); and (b) complied in all material respects with all of the
statutes, rules and regulations enforced or promulgated by the governmental or
regulatory authority with which it was filed (or was amended so as to be so
promptly following discovery of any such noncompliance) and none contained any
untrue statement of a material fact or omitted to state a material fact required
to be stated therein or necessary to make the statements therein, in light of
the circumstances under which they were made, not misleading. The BANCORP
Financial Statements, together with the financial statements contained in the
BANCORP Filings, have been prepared in accordance with GAAP, or applicable
regulatory accounting principles, applied on a consistent basis during the
period involved (except as may be indicated in the notes thereto) and fairly
present (subject, in the case of the unaudited statements, to recurring
adjustments normal in nature and amount) the consolidated financial position of
BANCORP as of the dates thereof and the consolidated results of its operations,
cash flows and changes in shareholders' equity for the period then ended.


                                       26

<PAGE>   468

               4.6.2 BANCORP, or BANK, as the case may be, has filed each
report, schedule, and amendments to each of the foregoing since January 1, 1995
that BANCORP, or BANK, was required to file with the Federal Reserve Bank or the
OCC (the "BANCORP Documents"), all of which have been made available to ROSE. As
of their respective dates, the BANCORP Documents complied in all material
respects with the applicable requirements of the BHCA and the National Bank Act,
as the case may be, and the rules and regulations of the Federal Reserve Bank
and the OCC thereunder applicable to such BANCORP Documents, and none of the
BANCORP Documents contained any untrue statement of a material fact or omitted
to state a material fact required to be stated therein or necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading. The financial statements of BANCORP included in the BANCORP
Filings comply in all material respects with applicable accounting requirements
and have been prepared in accordance with GAAP, or applicable regulatory
accounting principles, applied on a consistent basis during the periods involved
(except as may be indicated in the notes thereto, or in the case of the
unaudited statements, as permitted by regulations of the Federal Reserve Bank or
the OCC), and fairly present (subject, in the case of the unaudited statements,
to recurring adjustments normal in nature and amount) the consolidated financial
position of BANCORP as of the dates thereof and the consolidated results of its
operations and cash flows or changes in financial position for the periods then
ended.

        Section 4.7 ACCURACY OF INFORMATION SUPPLIED.

               4.7.1 No representation or warranty of BANCORP contained herein
or any statement, schedule, exhibit or certificate given or to be given by or on
behalf of BANCORP or any of its Subsidiaries, including BANK, to ROSE in
connection herewith and none of the information supplied or to be supplied by
BANCORP or any of its Subsidiaries, including BANK, to ROSE hereunder to the
best of BANCORP's Knowledge contains or will contain any untrue statement of
material fact or omit to state any material fact required to be stated therein
or necessary in order to make the statements therein, in light of the
circumstances under which they are made, not misleading.

               4.7.2 None of the information supplied or to be supplied by
BANCORP or relating to BANCORP and BANK which is included or incorporated by
reference in (i) the Registration Statement on Form S-4 to be filed with the SEC
by BANCORP in connection the issuance of shares of BANCORP Common Stock in the
Merger will, at the time the Registration Statement becomes effective under the
Securities Act, contain any untrue statement of a material fact or omit to state
a material fact required to be stated therein or necessary to make the
statements therein, in light of the circumstances under which they were made,
not misleading; (ii) the Joint Proxy Statement/Prospectus and any amendment or
supplement thereto will, at all times from the date of mailing to shareholders
of BANCORP through the date of the meeting of shareholders of BANCORP to be held
in connection with the Merger, contain any untrue statement of a material fact
or omit to state a material fact required to be stated therein or necessary to
make the statements therein, in light of the circumstances under which they were
made, not misleading; and (iii) the applications and forms to be filed with
securities or "blue sky" authorities, self regulatory authorities, or any
Governmental Entity in connection with the Merger, the issuance of any shares of
BANCORP Common Stock in connection with the Merger, or any Requisite Regulatory
Approvals will, at the time filed or at the time they become effective, contain
any untrue statement of a material fact or omit to state any material fact
required to be stated therein or necessary to make the statements therein, in
light of the circumstances under which they were made, not misleading. The
Registration Statement (except for


                                       27

<PAGE>   469

such portions thereof that relate only to ROSE and its Subsidiaries) will comply
in all material respects with the applicable provisions of the Securities Act
and the Exchange Act and the rules and regulations thereunder.

               4.7.3 BANCORP has delivered or will deliver to ROSE copies of:
(a) the audited balance sheets of BANCORP and its Subsidiaries as of December
31, 1997, 1996 and 1995 and the related statements of income, changes in
shareholders' equity and cash flows for the years then ended and the related
notes to such financial statements, all as audited by Perry-Smith & Company,
independent public accountants (the "BANCORP Financial Statements"), and BANCORP
will hereafter until the Closing Date deliver to ROSE copies of additional
financial statements of BANCORP as provided in Section 5.1.1(iii). The BANCORP
Financial Statements have been prepared (and all of said additional financial
statements will be prepared) in accordance with GAAP, or applicable regulatory
accounting principles, applied on a consistent basis during the periods involved
(except as may be indicated in the notes thereto) consistently followed
throughout the periods covered by such statements, and present (and, when
prepared, will present) fairly the financial position of BANCORP and its
Subsidiaries as of the respective dates and for the respective periods covered
by such financial statements (subject, in the case of the unaudited statements,
to recurring adjustments normal in nature and amount). In addition, BANCORP has
delivered or made available to ROSE copies of all management or other letters
delivered to BANCORP by its independent accountants in connection with any of
the BANCORP Financial Statements or by such accountants or any consultant
regarding the internal controls or internal compliance procedures and systems of
BANCORP issued at any time since January 1, 1994, and will make available for
inspection by ROSE or its representatives, at such times and places as ROSE may
reasonably request, reports and working papers produced or developed by such
accountants or consultants.

        Section 4.8 COMPLIANCE WITH APPLICABLE LAWS. Except as disclosed on
Schedule 4.8, to the best of BANCORP's Knowledge, the respective businesses of
BANCORP and its Subsidiaries are not being conducted in violation of any law,
ordinance or regulation, except for violations which individually or in the
aggregate would not have a Material Adverse Effect on BANCORP and its
Subsidiaries, taken as a whole. No investigation or review by any Governmental
Entity with respect to BANCORP is pending or, to the Knowledge of BANCORP,
threatened, nor has any Governmental Entity indicated to BANCORP an intention to
conduct the same, other than those the outcome of which, as far as can be
reasonably foreseen, will not have a Material Adverse Effect on BANCORP and its
Subsidiaries, taken as a whole.

        Section 4.9 LITIGATION. Except as disclosed on Schedule 4.9, there is no
suit, action or proceeding or investigation pending or, to the Knowledge of
BANCORP, threatened against or affecting BANCORP or any of its Subsidiaries
which, if adversely determined, would have a Material Adverse Effect on BANCORP
and its Subsidiaries, taken as a whole; nor is there any judgment, decree,
injunction, rule or order of any Governmental Entity or arbitrator outstanding
against BANCORP or any of its Subsidiaries that has, or which, insofar as
reasonably can be foreseen, in the future would have, any such Material Adverse
Effect.

        Section 4.10 AGREEMENTS WITH BANKING AUTHORITIES. Neither BANCORP nor
any Subsidiary of BANCORP is a party to any written agreement or memorandum of
understanding with, or order or directive from, any Governmental Entity.


                                       28

<PAGE>   470

        Section 4.11 INSURANCE. BANCORP and its Subsidiaries have in full force
and effect policies of insurance with respect to their assets and businesses
against such casualties and contingencies and in such amounts, types and forms
as are customarily appropriate for their businesses, operations, properties and
assets. Schedule 4.11 contains a list of all policies of insurance and bonds
carried and owned by BANCORP or any Subsidiary. None of BANCORP or any of its
Subsidiaries is in default under any such policy of insurance or bond such that
it can be canceled and all material current claims thereunder have been filed in
timely fashion. BANCORP and its Subsidiaries have filed claims outstanding with,
or given notice of claim to, their insurers or bonding companies in timely
fashion with respect to all material matters and occurrences for which they
believe they have coverage.

        Section 4.12 TITLE TO ASSETS OTHER THAN REAL PROPERTY. Each of BANCORP
and its respective Subsidiaries has good and marketable title to or a valid
leasehold interest in all properties and assets (other than real property which
is the subject to Section 4.13), it owns or leases, free and clear of all
mortgages, covenants, conditions, restrictions, easements, liens, security
interests, charges, claims, assessments and encumbrances, except for: (a) rights
of lessors, lessees or sublessees in such matters as are reflected in a written
lease; (b) encumbrances as set forth in the BANCORP Financial Statements; (c)
current Taxes (including assessments collected with Taxes) not yet due which
have been fully reserved for; (d) encumbrances, if any, that are not substantial
in character, amount or extent and do not detract materially from the value, or
interfere with present use, or the ability of BANCORP or its Subsidiary to sell
or otherwise dispose of the property subject thereto or affected thereby; and
(e) other matters as described in Schedule 4.12. Materially all such properties
and assets are, and require only routine maintenance to keep them, in good
working condition, normal wear and tear excepted.

        Section 4.13 REAL PROPERTY. Schedule 4.13 is an accurate list and
general description of all real property owned or leased by BANCORP or any of
its Subsidiaries, including OREO. Each of BANCORP and its respective
Subsidiaries has good and marketable title to the real properties that it owns,
as described in such Schedule, free and clear of all mortgages, covenants,
conditions, restrictions, easements, liens, security interests, charges, claims,
assessments and encumbrances, except for (a) rights of lessors, lessees or
sublessees in such matters as are reflected in a written lease; (b) current
Taxes (including assessments collected with Taxes) not yet due and payable; (c)
encumbrances, if any, that are not substantial in character, amount or extent
and do not materially detract from the value, or interfere with present use, or
the ability of BANCORP to dispose, of BANCORP's interest in the property subject
thereto or affected thereby; and (d) other matters as described in Schedule
4.13. BANCORP and its Subsidiaries have valid leasehold interests in the
leaseholds they respectively hold, free and clear of all mortgages, liens,
security interest, charges, claims, assessments and encumbrances, except for (a)
claims of lessors, co-lessees or sublessees in such matters as are reflected in
a written lease; (b) title exceptions affecting the fee estate of the lessor
under such leases; and (c) other matters as described in Schedule 4.13. To the
best of BANCORP's Knowledge, the activities of BANCORP and its Subsidiaries with
respect to all real property owned or leased by them for use in connection with
their operations are in all material respects permitted and authorized by
applicable zoning laws, ordinances and regulations and all laws and regulations
of any Governmental Entity. Except as set forth in Schedule 4.13, BANCORP and
its Subsidiaries enjoy quiet possession under all material leases to which they
are the lessees and all of such leases are valid and in full force and effect,
except as the enforceability thereof may be limited by bankruptcy, insolvency,
moratorium or other similar laws affecting the rights of creditors generally and
by general equitable principles. Materially all buildings and improvements on
real properties owned or leased


                                       29

<PAGE>   471

by BANCORP or any of its Subsidiaries are in good condition and repair, and do
not require more than normal and routine maintenance, to keep them in such
condition, normal wear and tear excepted.

        Section 4.14 PERFORMANCE OF OBLIGATIONS. BANCORP and its Subsidiaries
have performed all material obligations required to be performed by them to date
and none of BANCORP or any of its Subsidiaries is in material default under or
in breach of any term or provision of any covenant, contract, lease, indenture
or any other agreement, written or oral, to which any is a party, is subject or
is otherwise bound, and no event has occurred that, with the giving of notice or
the passage of time or both, would constitute such a default or breach, where
such default or breach or failure to perform would have a Material Adverse
Effect on BANCORP and its Subsidiaries, taken as a whole. To BANCORP's
Knowledge, and except as disclosed on Schedule 4.14, no party with whom BANCORP
or any of its Subsidiaries has an agreement that is of material importance to
the business of BANCORP and its Subsidiaries, taken as a whole, is in default
thereunder.

        Section 4.15 BROKERS AND FINDERS. Except as set forth on Schedule 4.15,
none of BANCORP or any of its Subsidiaries is a party to or obligated under any
agreement with any broker or finder relating to the transactions contemplated
hereby, and neither the execution of the Agreement, the Merger Agreement, nor
the consummation of the transactions provided for herein and therein, will
result in any liability to any broker or finder. BANCORP agrees to indemnify and
hold harmless ROSE and its affiliates, and to defend with counsel reasonably
satisfactory to ROSE's Chief Executive Officer, from and against any liability,
cost or expense, including attorneys' fees, incurred in connection with a breach
of this Section 4.15.

        Section 4.16 ABSENCE OF MATERIAL ADVERSE EFFECT. Since January 1, 1998,
the respective businesses of BANCORP and its Subsidiaries have been conducted
only in the ordinary course, in substantially the same manner as theretofore
conducted, and no event or circumstance has occurred or is expected to occur
which to BANCORP's Knowledge has had or which, with the passage of time or
otherwise, could reasonably be expected to have a Material Adverse Effect on
BANCORP and its Subsidiaries, taken as a whole.

        Section 4.17 UNDISCLOSED LIABILITIES. Except as disclosed on Schedule
4.17, none of BANCORP or any of its Subsidiaries to BANCORP's Knowledge has any
liabilities or obligations, either accrued, contingent or otherwise, that are
material to BANCORP and its Subsidiaries, taken as a whole, and that have not
been: (a) reflected or disclosed in the BANCORP Financial Statements; or (b)
incurred subsequent to December 31, 1997 in the ordinary course of business.
BANCORP has no Knowledge of any basis for the assertion against BANCORP or any
of its Subsidiaries, of any liability, obligation or claim (including without
limitation that of any Governmental Entity) that will have or cause, or could
reasonably be expected to have or cause, a Material Adverse Effect on BANCORP
and its Subsidiaries, taken as a whole, that is not fairly reflected in the
BANCORP Financial Statements or on Schedule 4.17.

        Section 4.18 TAXES.

               4.18.1 FILING OF RETURNS. Except as set forth on Schedule 4.18.1,
BANCORP and its Subsidiaries have duly prepared and filed or caused to be duly
prepared and filed all federal, state, and local Returns (for Tax or
informational purposes) which were required to be filed by or in respect of
BANCORP and its Subsidiaries, or any of their properties, income and/or
operations on or prior to


                                       30

<PAGE>   472

the Closing Date. As of the time they were filed, the foregoing Returns
accurately reflected the material facts regarding the income, business, asset,
operations, activities, status, and any other information required to be shown
thereon. Except as set forth on Schedule 4.18.1, no extension of time within
which BANCORP or any of its Subsidiaries may file any Return is currently in
force.

               4.18.2 PAYMENT OF TAXES. Except as disclosed on Schedule 4.18.2
with respect to all amounts in respect of Taxes imposed on BANCORP or any
Subsidiary or for which BANCORP or any Subsidiary is or could be liable, whether
to taxing authorities (as, for example, under law) or to other Persons (as, for
example, under Tax allocation agreements), with respect to all taxable periods
or portions of periods ending on or before the Closing Date, all applicable tax
laws and agreements have been or will be fully complied with in all material
respects, and all such amounts required to be paid by or on behalf of BANCORP or
any Subsidiary to taxing authorities or others on or before the date hereof have
been paid.

               4.18.3 AUDIT HISTORY. Except as disclosed on Schedule 4.18.3,
there is no review or audit by any taxing authority of any Tax liability of
BANCORP or any Subsidiary currently in progress of which BANCORP has Knowledge.
Except as disclosed on Schedule 4.18.3, BANCORP and its Subsidiaries have not
received any written notices within the three years preceding the Closing Date
of any pending or threatened audit, by the Internal Revenue Service or any
state, local or foreign agency, for any Returns or Tax liability of BANCORP or
any Subsidiary for any period. BANCORP and its Subsidiaries currently have no
unpaid deficiencies assessed by the Internal Revenue Service or any state, local
or foreign taxing authority arising out of any examination of any of the Returns
of BANCORP or any Subsidiaries filed for fiscal years ended on or after December
31, 1993 through the Closing Date, nor to the Knowledge of BANCORP is there
reason to believe that any material deficiency will be assessed.

               4.18.4 STATUTE OF LIMITATIONS. Except as disclosed on Schedule
4.18.4, no agreements are in force or are currently being negotiated by or on
behalf of BANCORP or any Subsidiaries for any waiver or for the extension of any
statute of limitations governing the time of assessments or collection of any
Tax. No closing agreements or compromises concerning Taxes of BANCORP or any
Subsidiaries are currently pending.

               4.18.5 WITHHOLDING OBLIGATIONS. BANCORP and its Subsidiaries have
withheld from each payment made to any of their respective officers, directors
and employees, the amount of all applicable Taxes, including, but not limited
to, income tax, social security contributions, unemployment contributions,
backup withholding and other deductions required to be withheld therefrom by any
Tax law and have paid the same to the proper taxing authorities within the time
required under any applicable Tax law.

               4.18.6 TAX LIENS. There are no Tax liens, whether imposed by any
federal, state, local or foreign taxing authority, outstanding against any
assets owned by BANCORP or its Subsidiaries, except for liens for Taxes that are
not yet due and payable.

               4.18.7 TAX RESERVES. BANCORP and its Subsidiaries have made full
and adequate provision and reserve for all federal, state, local or foreign
Taxes for the current period for which Tax and information returns are not yet
required to be filed. The BANCORP Financial Statements contain


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<PAGE>   473

fair and sufficient accruals for the payment of all Taxes for the periods
covered by the BANCORP Financial Statements and all periods prior thereto.

               4.18.8 IRC SECTION 382 APPLICABILITY. None of BANCORP or any of
its Subsidiaries, including any party joining in any consolidated return to
which BANCORP is a member, underwent an "ownership change" as defined in IRC
Section 382(g) within the "testing period" (as defined in IRC Section 382)
ending immediately before the Effective Time, and not taking into account any
transactions contemplated by this Agreement.

        Section 4.19 HAZARDOUS MATERIALS. Except as set forth on Schedule 4.19:

               4.19.1 Except for ordinary and necessary quantities of cleaning,
pest control and office supplies, and other small quantities of Hazardous
Substances that are used in the ordinary course of the respective businesses of
BANCORP and its Subsidiaries and in compliance with applicable Environmental
Laws, or ordinary rubbish, debris and nonhazardous solid waste stored in garbage
cans or bins for regular disposal off-site, or petroleum contained in, and de
minimus quantities discharged from, motor vehicles in their ordinary operation
on any of the BANCORP Properties (as defined below), BANCORP and its
Subsidiaries have not engaged in the generation, use, manufacture, treatment,
transportation, storage (in tanks or otherwise), or the disposal, of Hazardous
Substances other than as permitted by and only in compliance with applicable
law. To BANCORP's Knowledge, no material amount of Hazardous Substances have
been released, emitted or disposed of, or otherwise deposited, on, in or from
any real property which is now or has been previously owned since January 1,
1994, or which is currently or during the past three years was leased, by
BANCORP or any of its Subsidiaries, including OREO (collectively, the "BANCORP
Properties"), or to BANCORP's Knowledge, on or in any real property in which
BANCORP or any of its Subsidiaries now holds any security interest, mortgage or
other lien or interest with an underlying obligation in excess of $25,000
("BANCORP Collateralizing Real Estate"), except for (i) matters disclosed on
Schedule 4.19; (ii) ordinary and necessary quantities of cleaning, pest control
and office supplies used and stored in compliance with applicable Environmental
Laws, or ordinary rubbish, debris and nonhazardous solid waste stored in garbage
cans or bins for regular disposal off-site, or petroleum contained in, and de
minimus quantities discharged from, motor vehicles in their ordinary operation
on such BANCORP Properties; and (iii) such releases, emissions, disposals or
deposits which constituted a violation of an Environmental Law but did not have
a Material Adverse Effect on the BANCORP Property involved and would not result
in the incurrence or imposition of any liability, expense, penalty or fine
against BANCORP or any of its Subsidiaries in excess of $25,000 individually or
in the aggregate. To BANCORP's Knowledge, no activity has been undertaken on any
of the BANCORP Properties since January l, 1994, and to the Knowledge of BANCORP
no activities have been or are being undertaken on any of the BANCORP
Collateralizing Real Estate, that would cause or contribute to:

                      (a) any of the BANCORP Properties or BANCORP
Collateralizing Real Estate becoming a treatment, storage or disposal facility
within the meaning of RCRA or any similar state law or local ordinance;

                      (b) a release or threatened release of any Hazardous
Substances under circumstances which would violate any Environmental Laws; or


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<PAGE>   474

                      (c) the discharge of Hazardous Substances into any soil,
subsurface water or ground water or into the air, or the dredging or filling of
any waters, that would require a permit or any other approval under the Federal
Water Pollution Control Act, 33 U.S.C. ss.1251 et seq., the Clean Air Act, as
amended, 42 U.S.C. ss.7401 et seq., or any similar federal or state law or local
ordinance; the cumulative effect of which would have a material adverse effect
on the BANCORP Property or BANCORP Collateralizing Real Estate involved.

               4.19.2 To the Knowledge of BANCORP, there are not, and never have
been, any underground storage tanks located in or under any of the BANCORP
Properties or the BANCORP Collateralizing Real Estate.

               4.19.3 None of BANCORP or any of its Subsidiaries has received
any written notice of, and to the Knowledge of BANCORP none has received any
verbal notice of, any pending or threatened claims, investigations,
administrative proceedings, litigation, regulatory hearings or requests or
demands for remedial or responsive actions or for compensation, with respect to
any of the BANCORP Properties or BANCORP Collateralizing Real Estate, alleging
noncompliance with or violation of any Environmental Law or seeking relief under
any Environmental Law and none of the BANCORP Properties or BANCORP
Collateralizing Real Estate is listed on the United States Environmental
Protection Agency's National Priorities List of Hazardous Waste Sites, or, to
the Knowledge of BANCORP, any other list, schedule, log, inventory or record of
hazardous waste sites maintained by any federal, state or local agency.

        Section 4.20 EMPLOYEES.

               4.20.1 Except as set forth in Schedule 4.20.1, there are no
material controversies pending or threatened between BANCORP or any of its
Subsidiaries and any of their employees.

               4.20.2 Except as disclosed in the BANCORP Financial Statements at
December 31, 1997, or in Schedule 4.20.2, all material sums due for employee
compensation and benefits have been duly and adequately paid or provided for,
and all deferred compensation obligations are fully funded. Neither BANCORP nor
BANK is a party to any collective bargaining agreement with respect to any of
its employees or any labor organization to which its employees or any of them
belong.

               4.20.3 To BANCORP's Knowledge, no governmental agency or claimant
or representative of such claimant has alleged a material violation of ERISA by
BANCORP, the liability of which, if adversely determined would result in a
material adverse change in the capital or earnings of BANCORP.

        Section 4.21 POWERS OF ATTORNEY. No power of attorney or similar
authorization given by BANCORP or any Subsidiary thereof is presently in effect
or outstanding other than powers of attorney given in the ordinary course of
business with respect to routine matters.

        Section 4.22 LOANS AND INVESTMENTS. Except as set forth on Schedule
4.22, all loans, leases and other extensions of credit, and guaranties, security
agreements or other agreements supporting any loans or extensions of credit, and
investments of BANCORP or its Subsidiaries, including BANK, are, and constitute,
in all material respects, the legal, valid and binding obligations of the
parties thereto and are enforceable against such parties in accordance with
their terms, except as the


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<PAGE>   475

enforceability thereof may be limited by applicable law and otherwise by
bankruptcy, insolvency, moratorium or other similar laws affecting the rights of
creditors generally and by general equitable principles. Except as described on
Schedule 4.22, as of April 30, 1998, no loans or investments held by BANCORP or
any Subsidiary, including BANK are: (i) more than ninety days past due with
respect to any scheduled payment of principal or interest, other than loans on a
nonaccrual status; (ii) classified as "loss," "doubtful," "substandard" or
"specially mentioned" by BANK or any banking regulators; or (iii) on a
nonaccrual status in accordance with BANK's loan review procedures. Except as
set forth on Schedule 4.22, none of such assets (other than loans) are subject
to any restrictions, contractual, statutory or other, that would materially
impair the ability of the entity holding such investment to dispose freely of
any such assets at any time, except restrictions on the public distribution or
transfer of any such investments under the Securities Act and the regulations
thereunder or state securities laws and pledges or security interests given in
connection with government deposits. All loans, leases or other extensions of
credit outstanding, or commitments to make any loans, leases or other extensions
of credit made by BANCORP or BANK to any Affiliates of BANCORP or BANK are
disclosed on Schedule 4.22. For outstanding loans or extensions of credit where
the original principal amounts are in excess of $100,000 and which by their
terms are either secured by collateral or supported by a guaranty or similar
obligation, the security interests have been duly perfected in all material
respects and have the priority they purport to have in all material respects,
other than by operation of law, and, in the case of each guaranty or similar
obligation, each has been duly executed and delivered to BANCORP or any
Subsidiary, including BANK, and to BANCORP's Knowledge, is still in full force
and effect.

        Section 4.23 MATERIAL CONTRACTS. Schedule 4.23 to this Agreement
contains a complete and accurate written list of all material agreements,
obligations or understandings, written and oral, to which BANCORP or any
Subsidiary is a party as of the date of this Agreement, except for loans and
other extensions of credit made by BANCORP or BANK in the ordinary course of its
business and those items specifically disclosed in the BANCORP Financial
Statements.

        Section 4.24 EFFECTIVE DATE OF REPRESENTATIONS, WARRANTIES, COVENANTS
AND AGREEMENTS. Each representation, warranty, covenant and agreement of BANCORP
set forth in this Agreement shall be deemed to be made on and as of the date
hereof and as of the Effective Time.

                        ARTICLE 5. ADDITIONAL AGREEMENTS

        Section 5.1 ACCESS TO INFORMATION, DUE DILIGENCE, ETC.

               5.1.1 Upon reasonable notice, each party shall permit the other
party and its accountants, counsel and other representatives reasonable access
to their officers, employees, properties, books, contracts, commitments and
records and from the date hereof through the Effective Time, and shall furnish
or provide access to each other as soon as practicable, (i) a copy of each of
ROSE's Filings or BANCORP's Filings filed subsequent to the date of this
Agreement promptly after such document has been filed with the appropriate
Governmental Entity, provided, however, that copies of any Returns relating to
Taxes of ROSE or any of its Subsidiaries shall be furnished to BANCORP at least
15 Business Days prior to the proposed date of filing thereof and shall not be
filed without the prior approval of BANCORP, which approval shall not be
unreasonably withheld or delayed; (ii) unless otherwise prohibited by law, a
copy of each report, schedule and other


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<PAGE>   476

documents filed or received by it during such period with any Regulatory
Authority or the Internal Revenue Service, as to documents other than related to
employees or customers and other than those distributed to banks generally;
(iii) as promptly as practicable following the end of each calendar month after
the date hereof, a balance sheet of ROSE or BANCORP as of the end of such month;
and (iv) all other information concerning its business, properties, assets,
financial condition, results of operations, liabilities, personnel and otherwise
as ROSE or BANCORP may reasonably request.

               5.1.2 Until the Effective Time, a representative of BANCORP shall
be entitled and shall be invited to attend meetings of the Board of Directors of
ROSE or R1NB and of the Loan Committee of R1NB, and at least five (5) days'
prior written notice of the dates, times and places of such meetings shall be
given to BANCORP except that in the case of special meetings BANCORP shall
receive the same number of days' prior notice as ROSE's directors receive for
such meetings; provided, however, that such representative shall excuse himself
or herself from any portion of any such meetings that (i) relate to approval of,
or the exercise of any rights under, this Agreement by ROSE, (ii) involve
discussions between such Board of Directors or such Loan Committee and legal
counsel for ROSE that are entitled to be protected from disclosure under an
attorney-client privilege which would be lost due to the presence of such
representative of BANCORP, or (iii) constitute the Executive Session of any
Board of Directors meeting.

               5.1.3 Until the Effective Time, a representative of ROSE shall be
entitled and shall be invited to attend meetings of the Boards of Directors of
BANCORP and BANK and of the Loan Committee of BANK, at least five (5) days'
prior to written notice of the dates, times and places of such meetings shall be
given to ROSE except that in the case of special meetings ROSE shall receive the
same number of days' prior notice as BANCORP's directors receive for such
meetings; provided, however, that such representative shall excuse himself or
herself from any portion of any such meetings that (i) relate to approval of, or
the exercise of any rights under, this Agreement by BANCORP, (ii) involve
discussions between such Boards of Directors or such Loan Committees and legal
counsel for BANCORP that are entitled to be protected from disclosure under an
attorney-client privilege which would be lost due to the presence of such
representative of ROSE, or (iii) constitute the Executive Session of any Board
of Directors meeting.

               5.1.4 BANCORP and ROSE each agrees to keep confidential and not
divulge to any other party or Person (other than to the employees, attorneys,
accountants and consultants of each who have a need to receive such information
and other than as may be required by law) any information received from the
other, unless and until such documents and other information otherwise becomes
publicly available or unless the disclosure of such information is authorized by
each party. In the event of termination of this Agreement for any reason, the
parties shall promptly return, or at the election of the other party destroy,
all nonpublic documents obtained from the other and any copies or notes of such
documents (except as otherwise required by law) and, upon the request of the
other party, confirm such destruction to the other in writing.

        Section 5.2 SHAREHOLDER APPROVAL.

               5.2.1 ROSE and BANCORP each shall promptly call a meeting of its
respective shareholders to be held at the earliest practicable date after the
date on which the initial Registration Statement is filed with the SEC, but in
no event later than September 30, 1998, for the purpose of approving this
Agreement and authorizing the Merger Agreement and the Merger. Each of the


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<PAGE>   477

respective Boards of Directors will recommend to the respective shareholders
approval of this Agreement, the Merger Agreement and the Merger; provided,
however, that ROSE's Board of Directors or BANCORP's Board of Directors may
withdraw its recommendation if such Board of Directors believes in good faith
(based on a written opinion of a financial advisor that is experienced in
evaluating the fairness of Acquisition Proposals) that a ROSE Superior Proposal
or BANCORP Superior Proposal, as applicable (defined below) has been made and
shall have determined in good faith, after consultation with and based on
written advice of its outside legal counsel, that the withdrawal of such
recommendation is necessary for such Board of Directors to comply with its
fiduciary duties under applicable law.

               5.2.2 If the Merger is approved by vote of the shareholders of
BANCORP and ROSE, then, within ten (10) days thereafter BANCORP and ROSE shall
send a Dissenting Shareholder Notice to each recordholder of any Dissenting
Shares.

        Section 5.3 TAKING OF NECESSARY ACTION.

               5.3.1 Subject to the terms and conditions of this Agreement, each
of the parties hereto agrees, subject to applicable laws and the fiduciary
duties of ROSE's or BANCORP's Boards of Directors, as advised in writing by
their respective counsel, to use all reasonable efforts promptly to take or
cause to be taken all action and promptly to do or cause to be done all things
necessary, proper or advisable under applicable laws and regulations to
consummate and make effective the transactions contemplated by this Agreement
and the Merger Agreement, including, without limitation, the delivery of any
certificate or other document reasonably requested by counsel to a party to this
Agreement. Without limiting the foregoing, BANCORP and ROSE will use their
reasonable efforts to obtain all consents of third parties and Government
Entities necessary or, in the reasonable opinion of BANCORP or ROSE advisable
for the consummation of the transactions contemplated by this Agreement. Without
limiting the foregoing, BANCORP shall take all actions necessary to execute and
file the Merger Agreement and to effect all transactions contemplated by this
Agreement and ROSE shall take all actions necessary to effect all transactions
contemplated by this Agreement and the Merger Agreement. In case at any time
after the Effective Time any further action is necessary or desirable to carry
out the purposes of this Agreement, the Merger Agreement, or to vest the
Surviving Corporation with full title to all properties, assets, rights,
approvals, immunities and franchises of ROSE, the proper officers or directors
of BANCORP or ROSE, as the case may be, shall take all such necessary action.
Notwithstanding the foregoing, nothing in this Agreement shall be construed to
require ROSE to take any action (or omit to take any action) which may affect
the Conversion Rate, except as may be specifically provided for or required by
this Agreement.

               5.3.2 The obligations of ROSE or BANCORP contained in Section
6.2.5 of this Agreement shall continue to be in full force and effect despite
any Default thereof by reason of receipt of a ROSE Superior Proposal or BANCORP
Superior Proposal, as applicable (defined below) and any Default thereof by the
defaulting party shall entitle either ROSE or BANCORP to such legal or equitable
remedies as may be provided in this Agreement or by law notwithstanding that any
action or inaction of the Board of Directors or officers of the defaulting party
which is required to enable such party to fulfill such obligations may be
excused based on the continuing fiduciary obligations of such party's Board of
Directors and officers to its shareholders. Notwithstanding the foregoing,
however, in the event of a termination of this Agreement by BANCORP or ROSE and
the actual


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<PAGE>   478

payment of the liquidated damages to the other party as provided for in Section
8.5 of this Agreement, neither BANCORP, ROSE or their respective directors or
officers shall have any obligations or liabilities of any kind under this
Agreement by reason of any such Default, and BANCORP or ROSE shall have no
further obligations of any kind under this Agreement.

               5.3.3 ROSE shall use its best efforts to cause each director,
executive officer and other Person who is an "Affiliate" of ROSE (for purposes
of Rule 145 under the Securities Act) to deliver to BANCORP, on the date of this
Agreement, a written agreement in the form attached hereto as Exhibit 5.3 (the
"Affiliate Agreements").

        Section 5.4 REGISTRATION STATEMENT AND APPLICATIONS.

               5.4.1 BANCORP and ROSE will cooperate and jointly prepare and
file as promptly as practicable the Registration Statement, the statements,
applications, correspondence or forms to be filed with appropriate State
securities law regulatory authorities, and the statements, correspondence or
applications to be filed to obtain the Requisite Regulatory Approvals to
consummate the transactions contemplated by this Agreement. Each of BANCORP and
ROSE shall use all reasonable efforts to have the S-4 Registration Statement
declared effective under the Securities Act as promptly as practicable after
such filing, and thereafter mail the Joint Proxy Statement/Prospectus to the
shareholders of ROSE. Each party will furnish all financial or other
information, including accountant comfort letters relating thereto,
certificates, consents and opinions of counsel concerning it and its
Subsidiaries received by such party.

               5.4.2 Each party shall provide to the other at the request of the
other party: (i) immediately prior to the filing thereof, copies of all material
statements, applications, correspondence or forms to be filed with state
securities law regulatory authorities, the SEC and other appropriate regulatory
authorities to obtain the Requisite Regulatory Approvals to consummate the
transactions contemplated by this Agreement; provided, however, that no approval
need be obtained from any party to which such materials are provided; and (ii)
promptly after delivery to, or receipt from, such regulatory authorities all
written communications, letters, reports or other documents relating to the
transactions contemplated by this Agreement.

        Section 5.5 EXPENSES.

               5.5.1 Whether or not the Merger is consummated, all costs and
expenses incurred in connection with this Agreement and the transactions
contemplated hereby shall be paid by the party incurring the same, including,
without limitation, all costs associated with any resales of BANCORP Common
Stock by Affiliates of ROSE; provided, however, that BANCORP will file on a
timely basis at its own expense the reports required by Rule 144(c) of the
Securities Act.

               5.5.2 ROSE and BANCORP shall use their best efforts to ensure
that their attorneys, accountants, financial advisors, investment bankers and
other consultants engaged by them in connection with the transaction
contemplated by this Agreement submit full and final bills on or before the
Determination Date and that all such expenses are paid or properly accrued prior
to the Determination Date.


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<PAGE>   479

        Section 5.6 NOTIFICATION OF CERTAIN EVENTS.

               5.6.1 ROSE shall provide to BANCORP, as soon as practicable,
written notice (sent via facsimile and overnight mail or courier) of the
occurrence or failure to occur of any of the events, circumstances or conditions
that are the subject of Sections 6.1 and 6.2, which notice shall provide
reasonable detail as to the subject matter thereof.

               5.6.2 BANCORP shall provide to ROSE, as soon as practicable,
written notice (sent via facsimile and overnight mail or courier) of the
occurrence or failure to occur of any of the events, circumstances or conditions
that are the subject of Section 6.3 and 6.4, which notice shall provide
reasonable detail as to the subject matter thereof.

               5.6.3 Each party shall promptly advise the others in writing of
any change or event which could reasonably be expected to have a Material
Adverse Effect on the business, properties, assets, financial condition, results
of operations, liabilities or personnel of such party or on its ability to
consummate the transactions contemplated by this Agreement or the Merger
Agreement.

               5.6.4 ROSE and BANCORP shall immediately notify the other in
writing in the event that such party becomes aware that the Registration
Statement or Joint Proxy Statement/Prospectus at any time contains any untrue
statement of a material fact or omits to state a material fact required to be
stated therein or necessary in order to make the statement therein, in light of
the circumstances under which they were made, not misleading or that the
Registration Statement or the Joint Proxy Statement/Prospectus otherwise is
required to be amended and supplemented, which notice shall specify, in
reasonable detail, the circumstances thereof. BANCORP shall promptly amend and
supplement such materials and disseminate the new or modified information so as
to fully comply with the Securities Act. If the amendment or supplement so
required relates to information concerning ROSE, the out-of-pocket costs and
expenses of preparing, filing and disseminating such amendment or supplement
shall be borne by ROSE.

        Section 5.7 CLOSING SCHEDULES. ROSE has delivered to BANCORP on or
before the date of this Agreement all of the Schedules to this Agreement which
ROSE is required to deliver to BANCORP hereunder (the "ROSE Schedules"). BANCORP
has delivered to ROSE on or before the date of this Agreement all of the
Schedules to this Agreement which BANCORP is required to deliver to ROSE
hereunder ( the "BANCORP Schedules"). Immediately prior to the Closing Date,
ROSE shall have prepared updates of the ROSE Schedules provided for in this
Agreement and shall deliver to BANCORP revised schedules containing the updated
information (or a certificate signed by ROSE's Chief Executive Officer stating
that there have been no changes on the applicable schedules); and BANCORP shall
have prepared updates of the BANCORP Schedules provided for in this Agreement
and shall deliver to ROSE revised Schedules containing updated information (or a
certificate signed by BANCORP's Chief Executive Officer stating that there has
been no change on the applicable schedules). Such updated schedules shall
sometimes be referred to collectively, as the "Closing Schedules." The Closing
Schedules shall be dated as of the day prior to the Closing Date and shall
contain information as of the day prior to the Closing Date or as of such
earlier date as is practicable under the circumstances. In the event the Closing
Schedules disclose an event, occurrence or circumstance that has had or could
reasonably be expected to have a Material Adverse Effect on ROSE, on the one
hand, or on BANCORP, on the other hand, or on consummation of the transactions
contemplated by this Agreement, that was not disclosed in the previously
delivered


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<PAGE>   480

Schedules hereto, the party delivering such Closing Schedules (the "Affected
Party") shall so notify the other party in the letter of transmittal for such
Closing Schedules, the Closing Date shall be delayed for seven (7) Business Days
and such other party shall be entitled to terminate this Agreement within five
(5) Business Days after receiving such Closing Schedules that disclose such
event, occurrence or circumstance. In the event of any such termination, the
terminating party shall have no liability for such termination. The Affected
Party shall have no liability to the terminating party in such an event unless
(i) as a result of the existence of such event, occurrence or circumstance so
disclosed in the Closing Schedules any of the representations or warranties of
the Affected Party contained in this Agreement are found to have been untrue in
any material respect as of the date of this Agreement, or (ii) the event,
occurrence or circumstance could have been prevented in the exercise of
reasonable diligence by any officers or directors of the Affected Party, in
either of which cases the Affected Party shall be liable to the terminating
party for Liquidated Damages as provided in Section 8.5 hereof.

        Section 5.8 ADDITIONAL ACCRUALS/APPRAISALS. Prior to the Closing Date,
but after the Determination Date, at BANCORP's request, ROSE and/or R1NB shall,
consistent with GAAP and applicable banking regulations, establish such
additional accruals and reserves immediately prior to the Determination Date as
may be necessary to conform ROSE's or R1NB's accounting and credit and OREO loss
reserve practices and methods to those of BANCORP, provided, however, that no
accrual or reserve made by ROSE or R1NB pursuant to this Section 5.8, or any
litigation or regulatory proceeding arising out of any such accrual or reserve,
or any other effect on ROSE or R1NB resulting from ROSE's or R1NB's compliance
with this Section 5.8, shall constitute or be deemed to be a breach, violation
of or failure to satisfy any representation, warranty, covenant, condition or
other provision of this Agreement or otherwise be considered in determining
whether any such breach, violation or failure to satisfy shall have occurred.
Additionally, no such accrual or reserve made by ROSE or R1NB pursuant to this
Section 5.8 shall be used by the parties in the calculation of the ROSE Book
Value Per Share.

                         ARTICLE 6. CONDUCT OF BUSINESS

        Section 6.1 AFFIRMATIVE CONDUCT OF ROSE. During the period from the date
of execution of this Agreement through the Effective Time, ROSE shall carry on
its business, and shall cause each of its respective Subsidiaries to carry on
its business, in the ordinary course in substantially the manner in which
heretofore conducted, subject to changes in law applicable to all national banks
or all member banks insured by the FDIC and directives from regulators, and use
all commercially reasonable efforts to preserve intact its business
organization, keep available the services of its officers and employees, (other
than terminations in the ordinary course of business) and preserve its
relationships with customers, depositors, suppliers and others having business
dealings with it; and, to these ends, shall fulfill each of the following:

               6.1.1 Use its commercially reasonable efforts, or cooperate with
others, to expeditiously bring about the satisfaction of the conditions
specified in Article 7 hereof;

               6.1.2 Advise BANCORP promptly in writing of any change that would
have a Material Adverse Effect on its capital structure, financial condition,
assets, results of operations, business or prospects or of any matter which
would make the representations and warranties set forth


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<PAGE>   481

in Article 3 hereof not true and correct in any material respect as of the
effective date of the Registration Statement and at the Effective Time;

               6.1.3 Keep in full force and effect all of its existing material
permits and licenses and those of its Subsidiaries;

               6.1.4 Use its commercially reasonable efforts to maintain
insurance or bonding coverage on all material properties for which it is
responsible and on its business operations, and carry not less than the same
coverage for fidelity, public liability, personal injury, property damage and
other risks equal to that which is in effect as of the date of this Agreement;
and notify BANCORP in writing promptly of any facts or circumstances which could
affect its ability, or that of any of its Subsidiaries, to maintain such
insurance or bonding coverage;

               6.1.5 Perform its contractual obligations and not breach or come
into default on any of such obligations, and not amend, modify, or, except as
they may be terminated in accordance with their terms, terminate any material
contract, agreement, understanding, commitment, or offer, whether written or
oral, (collectively referred to as an "Understanding") or materially default in
the performance of any of its obligations under any Understanding where such
default would have a Material Adverse Effect on ROSE;

               6.1.6 Duly observe and conform to all legal requirements
applicable to its business, except for any failure to so observe and conform
that would not, individually or in the aggregate, and, in the future will not,
have a Material Adverse Effect on ROSE;

               6.1.7 Duly and timely file as and when due all reports and
Returns required to be filed with any Governmental Entity;

               6.1.8 Maintain its tangible assets and properties in good
condition and repair, normal wear and tear excepted in accordance with prior
practices;

               6.1.9 Promptly advise BANCORP in writing of any event or any
other transaction within the Knowledge of ROSE, whereby any Person or related
group of Persons acquires, after the date of this Agreement, directly or
indirectly, record or beneficial ownership (as defined in Rule 13d-3 promulgated
by the SEC pursuant to the Exchange Act) or control of 5% or more of the
outstanding shares of ROSE Common Stock either prior to or after the record date
fixed for the ROSE shareholders' meeting or any adjourned meeting thereof to
approve the transactions contemplated herein;

               6.1.10 (a) Maintain a reserve for loan and lease losses ("Loan
Loss Reserve") at a level which is adequate to provide for all known and
reasonably expected losses on loans, leases and other extensions of credit
outstanding and other inherent risks in ROSE's or R1NB's portfolio of loans and
leases, in accordance with GAAP and applicable regulatory accounting principles
and banking laws and regulations;

                      (b) Charge off all loans, receivables and other assets, or
portions thereof, deemed uncollectible in accordance with GAAP, regulatory
accounting principles, and applicable law or regulation, or which have been
classified as "loss" or as directed by any regulatory authority, unless


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<PAGE>   482

such classification or direction has been disregarded in good faith by ROSE or
R1NB, ROSE or R1NB has submitted in writing to such regulatory authority the
basis upon which it has so disregarded such classification or direction, and
such regulatory authority retracts its direction requiring such charge-off;

               6.1.11 Furnish to BANCORP, as soon as practicable, and in any
event within fifteen days after it is prepared: (i) a copy of any report
submitted to the Board of Directors of ROSE or R1NB and access to the working
papers related thereto, provided, however, that ROSE need not furnish BANCORP
any materials relating to deliberations of ROSE's Board of Directors or R1NB's
Board of Directors with respect to its approval of this Agreement,
communications of ROSE's legal counsel with the Board of Directors or officers
of ROSE regarding ROSE's rights against or obligations to BANCORP or its
Subsidiaries under this Agreement, or books, records and documents covered by
the attorney-client privilege or which are attorneys' work product; (ii) copies
of all material reports, renewals, filings, certificates, statements,
correspondence and other documents specific to ROSE or R1NB or filed with or
received from any Federal Reserve Bank, the SEC, the OCC or any Governmental
Entity; (iii) monthly unaudited balance sheets, statements of income and changes
in shareholders' equity for ROSE and R1NB and quarterly unaudited balance
sheets, statements of income and changes in shareholders' equity for ROSE and
R1NB, in each case prepared on a basis consistent with past practice; and (iv)
such other reports as BANCORP may reasonably request (which are otherwise
deliverable under this Section 6.1.11) relating to ROSE. Each of the financial
statements of ROSE or R1NB delivered pursuant to this Section 6.1.11 shall be
accompanied by a certificate of the Chief Financial Officer of ROSE or R1NB to
the effect that such financial statements fairly present the financial
information presented therein of ROSE or R1NB, for the periods covered, subject
to recurring adjustments normal in nature and amount, necessary for a fair
presentation and are prepared on a basis consistent with past practice;

               6.1.12 ROSE agrees that through the Effective Time, as of their
respect dates, (i) each ROSE Filing will be true and complete in all material
respects; and (ii) each ROSE Filing will comply in all material respects with
all of the statutes, rules and regulations enforced or promulgated by the
Governmental Entity with which it will be filed and none will contain any untrue
statement of a material fact or omit to state a material fact required to be
stated therein or necessary to make the statements therein, in light of the
circumstances under which they will be made, not misleading. Any financial
statement contained in any of such ROSE Filings that is intended to present the
financial position of ROSE during the periods involved to which it relates will
fairly present in all material respects the financial position of ROSE and will
be prepared in accordance with GAAP or consistent with applicable regulatory
accounting principles and banking law and banking regulations, except as stated
therein;

               6.1.13 Maintain reserves for contingent liabilities in accordance
with GAAP or applicable regulatory accounting principles and consistent with
past practices;

               6.1.14 Promptly notify BANCORP of the filing, or threatened
filing, of any litigation, or the filing or threatened filing of any government
or regulatory action, including an investigation or notice of investigation, or
similar proceeding or notice of any material claims against ROSE or any of its
assets;


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<PAGE>   483

               6.1.15 Inform BANCORP of the amounts and categories of any loans,
leases or other extensions of credit, or other assets, that have been classified
by any bank regulatory authority or by any unit of R1NB as "Specially
Mentioned," "Renegotiated," "Substandard," "Doubtful," "Loss" or any comparable
classification ("Classified Assets"). ROSE will furnish to BANCORP, as soon as
practicable, and in any event within fifteen days after the end of each calendar
month, schedules including the following: (i) Classified Assets by type
(including each credit or other asset in an amount equal to or greater than
$10,000), and its classification category; (ii) nonaccrual credits by type
(including each credit in an amount equal to or greater than $10,000); (iii)
renegotiated loans by type (loans on which interest has been renegotiated to
lower than market rates because of the financial condition of the borrowers);
(iv) delinquent credits by type (including each delinquent credit in an amount
equal to or greater than $10,000), including an aging into 30-89 and 90+ day
categories; (v) loans or leases or other assets charged off, in whole or in
part, during the previous month by type (including each such loan or lease or
other asset in an amount equal to or greater than $10,000); and (vi) OREO or
assets owned stating with respect to each its type;

               6.1.16 Furnish to BANCORP, upon BANCORP's request, schedules with
respect to the following: (i) participating loans and leases, stating, with
respect to each, whether it is purchased or sold and the loan or lease type;
(ii) loans or leases (including any commitments) by ROSE to any director or
officer (at or above the Vice President level) of ROSE or any of its
Subsidiaries, or to any Person holding 5% or more of the capital stock of ROSE,
including, with respect to each such loan or lease, the identity and, to the
best Knowledge of ROSE, the relation of the borrower to ROSE or R1NB, the loan
or lease type and the outstanding and undrawn amounts; and (iii) standby letters
of credit, by type, (including each letter of credit in a face amount equal to
or greater than $10,000); and

               6.1.17 Make available to BANCORP copies of each credit
authorization package, consisting of all applications for and financial
information regarding loans, renewals of loans or other extensions of credit of
$100,000 or more (on a noncumulative basis) for secured loans or secured
extensions of credit and $25,000 in the case of unsecured loans or unsecured
extensions of credit, which are approved by ROSE after the date of this
Agreement, within ten Business Days of preparation of such packages.

        Section 6.2 NEGATIVE COVENANTS OF ROSE. During the period from the date
of execution of this Agreement through the Effective Time, ROSE agrees that
without BANCORP's prior written consent, it shall not and its Subsidiaries shall
not:

               6.2.1 (a) Declare or pay any dividend on, other than regular cash
dividends consistent with past practices, or make any other distribution in
respect of any of its capital stock; (b) split, combine or reclassify any of its
capital stock or issue or authorize the issuance of any other securities in
respect of, in lieu of or in substitution for shares of its capital stock; or
(c) repurchase or otherwise acquire any shares of its capital stock;

               6.2.2 Take any action that would or might result in any of the
representations and warranties of ROSE set forth in the Agreement becoming
untrue in any material respect or any of the conditions to the Merger set forth
in Article 7 not being satisfied, except to the extent such actions are required
to be undertaken by applicable law, regulation or at the direction of any
Regulatory Authority;


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<PAGE>   484

               6.2.3 Issue, deliver, sell, or grant, or authorize the issuance,
delivery, sale or grant of, or purchase, any shares of the capital stock of ROSE
or any securities convertible or exercisable into or exchangeable for such
capital stock, or any rights, warrants or options, including options under any
stock option plans or enter into any agreements to do any of the foregoing,
except in connection with the issuance of ROSE Common Stock pursuant to the
exercise of ROSE Stock Options;

               6.2.4 Amend its Articles of Incorporation or Bylaws, except as
required by applicable law or by the terms of this Agreement;

               6.2.5 Authorize or knowingly permit any of its representatives,
directly or indirectly, to solicit or encourage any Acquisition Proposal (as
hereinafter defined) or participate in any discussions or negotiations with, or
provide any nonpublic information to, any Person or group of persons (other than
BANCORP, and its representatives) concerning any such solicited Acquisition
Proposal. ROSE shall notify BANCORP immediately if any inquiry regarding an
Acquisition Proposal is received by ROSE, including the terms thereof. For
purposes of this Section 6.2.5, "Acquisition Proposal" shall mean any (a)
proposal pursuant to which any Person other than BANCORP would acquire or
participate in a merger or other business combination or reorganization
involving ROSE or any of its Subsidiaries; (b) proposal by which any Person or
group, other than BANCORP, would acquire the right to vote ten percent (10%) or
more of the capital stock of ROSE entitled to vote for the election of
directors; (c) acquisition of the assets of ROSE other than in the ordinary
course of business; or (d) acquisition in excess of ten percent (10%) of the
outstanding capital stock of ROSE, other than as contemplated by this Agreement.
Notwithstanding the foregoing, nothing contained in this Agreement shall prevent
ROSE or ROSE's Board of Directors from (i) furnishing nonpublic information to,
or entering into discussions or negotiations with, any person or entity in
connection with an unsolicited bona fide written Acquisition Proposal by such
person or entity, or recommending an unsolicited bona fide written Acquisition
Proposal to the shareholders of ROSE, if and only to the extent that (A) the
Board of Directors of ROSE has determined and believes in good faith (after
consultation with and the concurrence of its financial advisor) that such
Acquisition Proposal would, if consummated, result in a transaction materially
more favorable, from a financial point of view, to ROSE's shareholders than the
transaction contemplated by this Agreement (any such more favorable Acquisition
Proposal being referred to in this Agreement as a "ROSE Superior Proposal") and
ROSE's Board of Directors has determined in good faith, after consultation with
and based on written advice from its outside legal counsel, that such action is
necessary for ROSE to comply with its fiduciary duties to shareholders under
applicable law, and (B) prior to furnishing such nonpublic information to, or
entering into discussions or negotiations with, such person or entity, ROSE's
Board of Directors has received from such person or entity an executed
confidentiality agreement, with terms no more favorable to such party than those
contained in the Confidentiality Agreement between ROSE and BANCORP, or (ii)
complying with Rule 14e-2 promulgated under the Exchange Act with regard to an
Acquisition Proposal, if such Rule is applicable thereto;

               6.2.6 Acquire or agree to acquire by merging, consolidating with,
or by purchasing all or a substantial portion of the assets of, or in any other
manner, any business or any Person or otherwise acquire or agree to acquire any
assets which are material to ROSE, other than in the ordinary course of business
consistent with prior practice;


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<PAGE>   485

               6.2.7 Sell, lease or otherwise dispose of any of its assets which
are material, individually or in the aggregate, to ROSE, except in the ordinary
course of business consistent with prior practice;

               6.2.8 Incur any indebtedness for borrowed money or guarantee any
such indebtedness or issue or sell any debt securities of ROSE or any of its
Subsidiaries or guarantee any debt securities of others other than in the
ordinary course of business consistent with prior practice;

               6.2.9 Enter into any Understanding, except: (a) deposits
incurred, and short-term debt securities (obligations maturing within one year)
issued, in its ordinary course of business consistent with prior practice, and
liabilities arising out of, incurred in connection with, or related to the
consummation of this Agreement; (b) commitments to make loans or other
extensions of credit in the ordinary course of business consistent with prior
practice; and (c) loan sales in the ordinary course of business, without any
recourse, provided that no commitment to sell loans shall extend beyond the
Effective Time;

               6.2.10 Make or enter into a commitment to make any loan or other
extension of credit to any director, officer or employee of ROSE or any of its
Subsidiaries, except in accordance with practice or policy in existence on the
date of this Agreement and in compliance with all applicable laws and all
applicable regulations and directives of any Governmental Entity;

               6.2.11 Except in the ordinary course of business consistent with
prior practice or as required by an existing contract, and provided prior
disclosure thereof has been made in Schedule 6.2.11, grant any general or
uniform increase in the rates of pay of employees or employee benefits or any
increase in salary or employee benefits of any officer, employee or agent or pay
any bonus to any Person;

               6.2.12 Sell, transfer, mortgage, encumber or otherwise dispose of
any assets or other liabilities except in the ordinary course of business
consistent with prior practice or as required by any existing contract;

               6.2.13 Make the credit underwriting policies, standards or
practices relating to the making of loans and other extensions of credit, or
commitments to make loans and other extensions of credit, or the Loan Loss
Reserve policies, less stringent than those in effect on December 31, 1997 or
reduce the amount of the Loan Loss Reserves or any other reserves for potential
losses or contingencies;

               6.2.14 Make any capital expenditures, or commitments with respect
thereto, except those in the ordinary course of business which do not exceed
$10,000 individually or $30,000 in the aggregate;

               6.2.15 Renew, extend or amend any existing employment contract or
agreement, enter into any new employment contract or agreement or make any bonus
or any special or extraordinary payments to any Person;

               6.2.16 Except in the ordinary course of business consistent with
prior practice, and in compliance with applicable laws and regulations, make any
material investments, by purchase of


                                       44

<PAGE>   486

stock or securities, contributions of capital, property transfers, purchases of
any property or assets or otherwise, in any other individual, corporation or
other entity;

               6.2.17 Except as otherwise required to correct a prior filing,
compromise or otherwise settle or adjust any assertion or claim of a deficiency
in Taxes (or interest thereon or penalties in connection therewith) or file any
appeal from an asserted deficiency except in a form previously approved by
BANCORP, which approval will not be unreasonably withheld, in writing, or file
or amend any federal, foreign, state or local Tax Return or report or make any
tax election or change any method or period of accounting unless required by
GAAP or applicable law and, then, only after submitting such Tax return or
report or proposed Tax election or change in any method or period of accounting,
to BANCORP for its approval, which it shall not unreasonably withhold or delay;

               6.2.18 Except as contemplated in this Agreement, terminate any
Employee Plan or Benefit Arrangement;

               6.2.19 Change its fiscal year or methods of accounting in effect
at December 31, 1997, except as required by changes in GAAP or regulatory
accounting principles as concurred to by ROSE's independent public accountants;

               6.2.20 Take or cause to be taken any action which would
disqualify the Merger as a "reorganization" within the meaning of Section 368(a)
of the IRC as a tax-free reorganization;

               6.2.21 Take or cause to be taken into OREO any commercial
property without an environmental report reporting no adverse environmental
condition on such property, with a copy of such report delivered to BANCORP
prior to taking such property into OREO; or

               6.2.22 Make any new elections with respect to Taxes or any
changes in current elections with respect to Taxes affecting the assets owned by
ROSE or its Subsidiaries. BANCORP shall be deemed to have consented in writing
to any election ROSE or its Subsidiaries shall desire to make if: (i) the
electing Person shall have notified the Chief Executive Officer of BANCORP in
writing of its desire to make such election, including in such notice a
reasonably complete summary of the election it desires to make and the reasons
it desires to make such election at least 20 Business Days prior to the due date
(including extensions thereof) for filing such election; and (ii) BANCORP shall
not have responded in writing to such notice by the fifth Business Day prior to
the due date (including extensions thereof) for filing such election.

        Section 6.3 AFFIRMATIVE CONDUCT OF BANCORP. During the period from the
date of execution of this Agreement through the Effective Time, BANCORP shall
carry on its business, and shall cause each of its respective Subsidiaries to
carry on its business, in the ordinary course in substantially the manner in
which heretofore conducted, subject to changes in law applicable to all national
banks or all member banks insured by the FDIC and directives from regulators
(except to the extent ROSE shall otherwise consent in writing), and use all
commercially reasonable efforts to preserve intact its business organization,
keep available the services of its officers and employees, (other than
terminations in the ordinary course of business) and preserve its relationships
with customers, depositors, suppliers and others having business dealings with
it; and, to these ends, shall fulfill each of the following:


                                       45

<PAGE>   487

               6.3.1 Use its commercially reasonable efforts, or cooperate with
others, to expeditiously bring about the satisfaction of the conditions
specified in Article 7 hereof;

               6.3.2 Advise ROSE promptly in writing of any change that would
have a Material Adverse Effect on its capital structure, consolidated financial
condition, consolidated assets, consolidated results of operations, business or
prospects or of any matter which would make the representations and warranties
set forth in Article 4 hereof not true and correct in any material respect as of
the effective date of the Registration Statement and at the Effective Time;

               6.3.3 Keep in full force and effect all of its existing material
permits and licenses and those of its Subsidiaries;

               6.3.4 Use its commercially reasonable efforts to maintain
insurance or bonding coverage on all material properties for which it is
responsible and on its business operations, and carry not less than the same
coverage for fidelity, public liability, personal injury, property damage and
other risks equal to that which is in effect as of the date of this Agreement;
and notify ROSE in writing promptly of any facts or circumstances which could
affect its ability, or that of any of its Subsidiaries, to maintain such
insurance or bonding coverage;

               6.3.5 Perform its contractual obligations and not breach or come
into default on any of such obligations, and not amend, modify, or, except as
they may be terminated in accordance with their terms, terminate any
Understanding or materially default in the performance of any of its obligations
under any Understanding where such default would have a Material Adverse Effect
on BANCORP;

               6.3.6 Duly observe and conform to all legal requirements
applicable to its business, except for any failure to so observe and conform
that would not, individually or in the aggregate, and, in the future will not,
have a Material Adverse Effect on ROSE;

               6.3.7 Duly and timely file as and when due all reports and
Returns required to be filed with any Governmental Entity;

               6.3.8 Maintain its tangible assets and properties in good
condition and repair, normal wear and tear excepted in accordance with prior
practices;

               6.3.9 Promptly advise ROSE in writing of any event or any other
transaction within the Knowledge of BANCORP, whereby any Person or related group
of Persons acquires, after the date of this Agreement, directly or indirectly,
record or beneficial ownership (as defined in Rule 13d-3 promulgated by the SEC
pursuant to the Exchange Act) or control of 5% or more of the outstanding shares
of BANCORP Common Stock either prior to or after the record date fixed for the
BANCORP shareholders' meeting or any adjourned meeting thereof to approve the
transactions contemplated herein;

               6.3.10 (a) Maintain a Loan Loss Reserve at a level which is
adequate to provide for all known and reasonably expected losses on loans,
leases and other extensions of credit outstanding and other inherent risks in
BANCORP's or BANK's portfolio of loans and leases, in


                                       46

<PAGE>   488

accordance with GAAP and applicable regulatory accounting principles and banking
laws and regulations;

                      (b) Charge off all loans, receivables and other assets, or
portions thereof, deemed uncollectible in accordance with GAAP, regulatory
accounting principles, and applicable law or regulation, or which have been
classified as "loss" or as directed by any regulatory authority, unless such
classification or direction has been disregarded in good faith by BANCORP or
BANK, BANCORP or BANK has submitted in writing to such regulatory authority the
basis upon which it has so disregarded such classification or direction, and
such regulatory authority retracts its direction requiring such charge-off;

               6.3.11 Furnish to ROSE, as soon as practicable, and in any event
within fifteen days after it is prepared: (i) a copy of any report submitted to
the Board of Directors of BANCORP or BANK and access to the working papers
related thereto, provided, however, that BANCORP need not furnish ROSE any
materials relating to deliberations of BANCORP's Board of Directors or BANK's
Board of Directors with respect to its approval of this Agreement,
communications of BANCORP's legal counsel with the Board of Directors or
officers of BANCORP regarding BANCORP's rights against or obligations to ROSE or
its Subsidiaries under this Agreement, or books, records and documents covered
by the attorney-client privilege or which are attorneys' work product; (ii)
copies of all material reports, renewals, filings, certificates, statements,
correspondence and other documents specific to BANCORP or BANK or filed with or
received from any Federal Reserve Bank, the SEC, the OCC or any Governmental
Entity; (iii) monthly unaudited balance sheets, statements of income and changes
in shareholders' equity for BANCORP and BANK and quarterly unaudited balance
sheets, statements of income and changes in shareholders' equity for BANCORP and
BANK, in each case prepared on a basis consistent with past practice; and (iv)
such other reports as ROSE may reasonably request (which are otherwise
deliverable under this Section 6.3.11) relating to BANCORP. Each of the
financial statements of BANCORP or BANK delivered pursuant to this Section
6.3.11 shall be accompanied by a certificate of the Chief Financial Officer of
BANCORP or BANK to the effect that such financial statements fairly present the
financial information presented therein of BANCORP or BANK, for the periods
covered, subject to recurring adjustments normal in nature and amount, necessary
for a fair presentation and are prepared on a basis consistent with past
practice;

               6.3.12 BANCORP agrees that through the Effective Time, as of
their respect dates, (i) each BANCORP Filing will be true and complete in all
material respects; and (ii) each BANCORP Filing will comply in all material
respects with all of the statutes, rules and regulations enforced or promulgated
by the Governmental Entity with which it will be filed and none will contain any
untrue statement of a material fact or omit to state a material fact required to
be stated therein or necessary to make the statements therein, in light of the
circumstances under which they will be made, not misleading. Any financial
statement contained in any of such BANCORP Filings that is intended to present
the financial position of BANCORP, on a consolidated basis, during the periods
involved to which it relates will fairly present in all material respects the
financial position of BANCORP, on a consolidated basis, and will be prepared in
accordance with GAAP or consistent with applicable regulatory accounting
principles and banking law and regulations, except as stated therein;

               6.3.13 Maintain reserves for contingent liabilities in accordance
with GAAP or applicable regulatory accounting principles and consistent with
past practices;


                                       47

<PAGE>   489

               6.3.14 Promptly notify ROSE of the filing, or threatened filing,
of any litigation, or the filing or threatened filing of any government or
regulatory action, including an investigation or notice of investigation, or
similar proceeding or notice of any material claims against BANCORP or any of
its assets, which is expected to have a Material Adverse Effect on BANCORP and
its Subsidiaries taken as a whole;

               6.3.15 Inform ROSE of the amounts and categories of any loans,
leases or other extensions of credit, or other assets, that have been classified
by any bank regulatory authority or by any unit of BANK as Classified Assets.
BANCORP will furnish to ROSE, as soon as practicable, and in any event within
fifteen days after the end of each calendar month, schedules including the
following: (i) Classified Assets by type (including each credit or other asset
in an amount equal to or greater than $10,000), and its classification category;
(ii) nonaccrual credits by type (including each credit in an amount equal to or
greater than $10,000); (iii) renegotiated loans by type (loans on which interest
has been renegotiated to lower than market rates because of the financial
condition of the borrowers); (iv) delinquent credits by type (including each
delinquent credit in an amount equal to or greater than $10,000), including an
aging into 30-89 and 90+ day categories; (v) loans or leases or other assets
charged off, in whole or in part, during the previous month by type (including
each such loan or lease or other asset in an amount equal to or greater than
$10,000); and (vi) OREO or assets owned stating with respect to each its type;
and

               6.3.16 Furnish to ROSE, upon ROSE's request, schedules with
respect to the following: (i) participating loans and leases, stating, with
respect to each, whether it is purchased or sold and the loan or lease type;
(ii) loans or leases (including any commitments) by BANCORP to any director or
officer (at or above the Vice President level) of BANCORP or any of its
Subsidiaries, or to any Person holding 5% or more of the capital stock of
BANCORP, including, with respect to each such loan or lease, the identity and,
to the best Knowledge of BANCORP, the relation of the borrower to BANCORP or
BANK, the loan or lease type and the outstanding and undrawn amounts; and (iii)
standby letters of credit, by type, (including each letter of credit in a face
amount equal to or greater than $10,000).

        Section 6.4 NEGATIVE COVENANTS OF BANCORP. During the period from the
date of execution of this Agreement through the Effective Time, BANCORP agrees
that without ROSE's prior written consent, it shall not and its Subsidiaries
shall not:

               6.4.1 (a) Declare or pay any dividend on, other than regular cash
dividends consistent with past practices, or make any other distribution in
respect of any of its capital stock; (b) split, combine or reclassify any of its
capital stock or issue or authorize the issuance of any other securities in
respect of, in lieu of or in substitution for shares of its capital stock; or
(c) repurchase or otherwise acquire any shares of its capital stock;

               6.4.2 Take any action that would or might result in any of the
representations and warranties of BANCORP set forth in the Agreement becoming
untrue in any material respect or any of the conditions to the Merger set forth
in Article 7 not being satisfied, except to the extent such actions are required
to be undertaken by applicable law, regulation or at the direction of any
Regulatory Authority;


                                       48

<PAGE>   490

               6.4.3 Issue, deliver, sell, or grant, or authorize the issuance,
delivery, sale or grant of, or purchase, any shares of the capital stock of
BANCORP or any securities convertible or exercisable into or exchangeable for
such capital stock, or any rights, warrants or options, including options under
any stock option plans or enter into any agreements to do any of the foregoing,
except in connection with the issuance of BANCORP Common Stock pursuant to the
exercise of BANCORP Stock Options or pursuant to the proposed acquisition of
another financial entity identified by BANCORP in writing to ROSE prior to the
execution of the Agreement;

               6.4.4 Amend its Articles of Incorporation or Bylaws, except as
required by applicable law or by the terms of this Agreement;

               6.4.5 Sell, lease or otherwise dispose of any of its assets which
are material, individually or in the aggregate, to BANCORP, except in the
ordinary course of business consistent with prior practice;

               6.4.6 Incur any indebtedness for borrowed money or guarantee any
such indebtedness or issue or sell any debt securities of BANCORP or any of its
Subsidiaries or guarantee any debt securities of others other than in the
ordinary course of business consistent with prior practice;

               6.4.7 Sell, transfer, mortgage, encumber or otherwise dispose of
any assets or other liabilities except in the ordinary course of business
consistent with prior practice or as required by any existing contract;

               6.4.8 Make the credit underwriting policies, standards or
practices relating to the making of loans and other extensions of credit, or
commitments to make loans and other extensions of credit, or the Loan Loss
Reserve policies, less stringent than those in effect on December 31, 1997 or
reduce the amount of the Loan Loss Reserves or any other reserves for potential
losses or contingencies;

               6.4.9 Except in the ordinary course of business consistent with
prior practice, and in compliance with applicable laws and regulations, make any
material investments, by purchase of stock or securities, contributions of
capital, property transfers, purchases of any property or assets or otherwise,
in any other individual, corporation or other entity;

               6.4.10 Except as otherwise required to correct a prior filing,
compromise or otherwise settle or adjust any assertion or claim of a deficiency
in Taxes (or interest thereon or penalties in connection therewith) or file any
appeal from an asserted deficiency except in a form previously approved by ROSE,
in writing, or file or amend any federal, foreign, state or local Tax Return or
report or make any tax election or change any method or period of accounting
unless required by GAAP or applicable law and, then, only after submitting such
Tax return or report or proposed Tax election or change in any method or period
of accounting, to ROSE for its approval, which it shall not unreasonably
withhold or delay;

               6.4.11 Change its fiscal year or methods of accounting in effect
at December 31, 1997, except as required by changes in GAAP or regulatory
accounting principles as concurred to by BANCORP's independent public
accountants;


                                       49

<PAGE>   491

               6.4.12 Authorize or knowingly permit any of its representatives,
directly or indirectly, to solicit or encourage any Acquisition Proposal (as
hereinafter defined) or participate in any discussions or negotiations with, or
provide any nonpublic information to, any Person or group of persons (other than
ROSE, and its representatives) concerning any such solicited Acquisition
Proposal. BANCORP shall notify ROSE immediately if any inquiry regarding an
Acquisition Proposal is received by BANCORP, including the terms thereof. For
purposes of this Section 6.4.12, "Acquisition Proposal" shall mean any (a)
proposal pursuant to which any Person other than ROSE would acquire or
participate in a merger or other business combination or reorganization
involving BANCORP; (b) proposal by which any Person or group, other than ROSE,
would acquire the right to vote ten percent (10%) or more of the capital stock
of BANCORP entitled to vote for the election of directors; (c) acquisition of
the assets of BANCORP other than in the ordinary course of business; or (d)
acquisition in excess of ten percent (10%) of the outstanding capital stock of
BANCORP other than as contemplated by this Agreement. Notwithstanding the
foregoing, nothing contained in this Agreement shall prevent BANCORP or its
Board of Directors from (i) furnishing nonpublic information to, or entering
into discussions or negotiations with, any person or entity in connection with
an unsolicited bona fide written Acquisition Proposal by such person or entity,
or recommending an unsolicited bona fide written Acquisition Proposal to the
shareholders of BANCORP, if and only to the extent that (A) the Board of
Directors of BANCORP has determined and believes in good faith (after
consultation with and the concurrence of its financial advisor) that such
Acquisition Proposal would, if consummated, result in a transaction materially
more favorable, from a financial point of view, to BANCORP's shareholders than
the transaction contemplated by this Agreement (any such more favorable
Acquisition Proposal being referred to in this Agreement as a "BANCORP Superior
Proposal") and BANCORP's Board of Directors has determined in good faith, after
consultation with and based on written advice from its outside legal counsel,
that such action is necessary for BANCORP to comply with its fiduciary duties to
shareholders under applicable law, and (B) prior to furnishing such nonpublic
information to, or entering into discussions or negotiations with, such person
or entity, BANCORP's Board of Directors received from such person or entity an
executed confidentiality agreement, with terms no more favorable to such party
than those contained in the Confidentiality Agreement between ROSE and BANCORP,
or (ii) complying with Rule 14e-2 promulgated under the Exchange Act with regard
to an Acquisition Proposal, if such Rule is applicable thereto;

               6.4.13 Take any action that would or might result in any of the
representations and warranties of BANCORP set forth in the Agreement becoming
untrue in any material respect or any of the conditions to the Merger set forth
in Article 7 not being satisfied, except to the extent such actions are required
to be undertaken by applicable law, regulation or at the direction of any
Regulatory Authority;

               6.4.14 Take or cause to be taken any action which would
disqualify the Merger as a "reorganization" within the meaning of Section 368(a)
of the IRC as a tax-free reorganization;

               6.4.15 Take or cause to be taken into OREO any commercial
property without an environmental report reporting no adverse environmental
condition on such property, with a copy of such report delivered to ROSE prior
to taking such property into OREO; or

               6.4.16 Make any new elections with respect to Taxes or any
changes in current elections with respect to Taxes affecting the assets owned by
BANCORP or its Subsidiaries. ROSE


                                       50

<PAGE>   492

shall be deemed to have consented in writing to any election BANCORP or its
Subsidiaries shall desire to make if: (i) the electing Person shall have
notified the Chief Executive Officer of ROSE in writing of its desire to make
such election, including in such notice a reasonably complete summary of the
election it desires to make and the reasons it desires to make such election at
least 20 Business Days prior to the due date (including extensions thereof) for
filing such election; and (ii) ROSE shall not have responded in writing to such
notice by the fifth Business Day prior to the due date (including extensions
thereof) for filing such election.

                   ARTICLE 7. CONDITIONS PRECEDENT TO CLOSING

        Section 7.1 CONDITIONS TO THE PARTIES' OBLIGATIONS. The obligations of
all the parties to this Agreement to effect the Merger shall be subject to the
fulfillment of the following conditions:

               7.1.1 This Agreement, the Merger Agreement and the Merger shall
have been validly approved by the holders of a majority of the outstanding
shares of ROSE Common Stock and BANCORP Common Stock entitled to vote;

               7.1.2 All permits, approvals and consents required to be
obtained, and all waiting periods required to expire, prior to the consummation
of the Merger under applicable federal laws of the United States or applicable
laws of any state having jurisdiction over the transactions contemplated by this
Agreement and the Merger Agreement shall have been obtained or expired, as the
case may be (all such permits, approvals and consents and the lapse of all such
waiting periods being referred to as the "Requisite Regulatory Approvals"),
without the imposition of any condition which in the reasonable judgment of any
party to be affected by such condition is materially burdensome upon such party
or its respective Affiliates or the Surviving Corporation;

               7.1.3 There shall not be any action taken, or any statute, rule,
regulation or order enacted, entered, enforced or deemed applicable to the
Merger, by any Government Entity which: (i) makes the consummation of the Merger
illegal; (ii) requires the divestiture by BANCORP of any material asset or of a
material portion of the business of BANCORP; or (iii) imposes any condition upon
BANCORP or its Subsidiaries (other than general provisions of law applicable to
all banks and bank holding companies) which in the judgment of BANCORP would be
materially burdensome;

               7.1.4 The Registration Statement shall have become effective
under the Securities Act and no stop order suspending the effectiveness of the
Registration Statement shall have been issued and shall remain in effect. No
legal, administrative, arbitration, investigatory or other proceeding by any
Governmental Entity or any other Person shall have been instituted and, at what
otherwise would have been the Effective Time, remain pending by or before any
Governmental Entity to restrain or prohibit the transactions contemplated
hereby;

               7.1.5 BANCORP and ROSE shall have received an opinion from
Perry-Smith & Co., dated the Effective Time, subject to assumptions and
exceptions normally included, and in form and substance reasonably satisfactory
to BANCORP and ROSE, to the effect that the Merger will be treated for federal
income tax purposes as a reorganization within the meaning of Section 368(a) of
the IRC and that BANCORP and ROSE will each be a party to that reorganization
within the meaning of Section 368(b) of the IRC;


                                       51

<PAGE>   493

               7.1.6 BANCORP and ROSE shall have received from Perry-Smith &
Co., who are the independent public accountants of BANCORP and ROSE, letters,
dated at the effective date of the Registration Statement and at the Effective
Time, in form and substance satisfactory to BANCORP and ROSE that the Merger may
be accounted for as a pooling of interests;

               7.1.7 BANCORP and ROSE shall have received opinions of counsel
for the other party in substantially the forms previously agreed to by the
parties as set forth in Exhibits 7.1.7A and 7.1.7B, respectively, dated as of
the Closing Date;

               7.1.8 No action, suit or proceeding shall have been instituted or
threatened before any court or governmental body seeking to challenge or
restrain the transactions contemplated by this Agreement or the Merger Agreement
which presents a substantial risk that such transactions will be restrained or
that either party hereto may suffer material damages or other relief as a result
of consummating such transactions; and

               7.1.9 The holders of no more than 10% of the outstanding shares
of ROSE Common Stock have exercised dissenters' rights. Dissenters of BANCORP
shall be included in such calculation. Dissenters' rights shall be deemed to be
exercised to the extent at the Effective Time the holder of such shares have
complied with the California Corporations Code concerning dissenters' rights.

        Section 7.2 CONDITIONS TO BANCORP'S OBLIGATIONS. The obligations of
BANCORP to effect the Merger shall be subject to the fulfillment (or waiver, in
writing, by BANCORP) of the following conditions:

               7.2.1 Except as otherwise provided in this Section 7.2, (a) the
representations and warranties of ROSE contained in Article 3 shall be true in
all material respects as of the Effective Time as though made at the Effective
Time, except to the extent they expressly refer to an earlier time and except
where the failure to be true, individually or in the aggregate, would not have
or would not be reasonably likely to have, a Material Adverse Effect on the
Surviving Corporation or R1NB, or upon the consummation of the transactions
contemplated hereby; (b) ROSE shall have duly performed and complied in all
material respects with all agreements and covenants required by this Agreement
to be performed or complied with by it prior to or at the Effective Time, except
where the failure to so perform and comply, individually or in the aggregate,
would not have or would not be reasonably likely to have a Material Adverse
Effect on ROSE or R1NB, or upon the consummation of the transactions
contemplated hereby; (c) none of the events or conditions entitling BANCORP to
terminate this Agreement under Article 8 shall have occurred and be continuing;
and (d) ROSE shall have delivered to BANCORP certificates dated the date of the
Effective Time and signed by the President and Chief Executive Officer to the
effect set forth in Subsections 7.2.1(a), (b) and (c);

               7.2.2 There shall have been obtained, without the imposition of
any material burden or restriction on any of the parties hereto not in existence
on the date hereof, each consent to the consummation of the Merger required to
be obtained from any Person under any agreement, contract or license to which
ROSE is a party or by or under which it is bound or licensed, the withholding of
which might have a Material Adverse Effect on ROSE, the Surviving Corporation or
BANCORP at or following the Effective Time, or on the transactions contemplated
by this Agreement;


                                       52

<PAGE>   494

               7.2.3 ROSE shall have delivered its Closing Schedules to BANCORP
on the day immediately preceding the Closing Date and none of such Closing
Schedules shall reflect any item that was not on the ROSE Schedules (or in the
ROSE Financial Statements) delivered on the date of execution of this Agreement
that has had, would have, or could be reasonably likely to have, a Material
Adverse Effect on ROSE, the Surviving Corporation or BANCORP at or after the
Effective Time, or on the consummation of the transactions contemplated hereby;

               7.2.4 Between the date of this Agreement and the Effective Time,
no event or circumstance shall have occurred which has had or could reasonably
be expected to have a Material Adverse Effect on ROSE, or its Subsidiaries, and
BANCORP shall have received a certificate signed on behalf of ROSE by the
President and Chief Executive Officer of ROSE to such effect;

               7.2.5 Counsel for BANCORP shall have approved, in the exercise of
counsel's reasonable discretion, the validity of all transactions herein
contemplated, as well as the form and substance of all opinions, certificates,
instruments of transfer and other documents to be delivered to BANCORP hereunder
or that are reasonably requested by such counsel;

               7.2.6 The sale of the BANCORP Common Stock resulting from the
Merger shall have been qualified or registered with the appropriate State
securities law or "blue sky" regulatory authorities of all States in which
qualification or registration is required under the State securities laws, and
such qualifications or registration shall not have been suspended or revoked;

               7.2.7 ROSE shall have delivered to BANCORP not later than the
date of this Agreement all of the executed Affiliate Agreements in the form
attached hereto as Exhibit 5.3;

               7.2.8 None of ROSE or any of its Subsidiaries shall be subject to
any memorandum of understanding, cease and desist order, or other agreement with
any Governmental Entity restricting the conduct of any of their respective
businesses, prospects and operations, so as to have a Material Adverse Effect;

               7.2.9 All of ROSE's director-shareholders shall have delivered to
BANCORP on the date of this Agreement the Director-Shareholder Agreements in the
form attached hereto as Exhibit 7.2.9.

        Section 7.3 CONDITIONS TO ROSE'S OBLIGATIONS. The obligations of ROSE to
effect the Merger shall be subject to the fulfillment (or waiver, in writing, by
ROSE) of the following conditions:

               7.3.1 Except as otherwise provided in this Section 7.3, (a) the
representations and warranties of BANCORP contained in Article 4 shall be true
in all material respects as of the Effective Time as though made at the
Effective Time, except to the extent they expressly refer to an earlier time and
except where the failure to be true, individually or in the aggregate, would not
have or would not be reasonably likely to have, a Material Adverse Effect on
BANCORP and BANK, taken as a whole, or upon consummation of the transactions
contemplated hereby; (b) BANCORP shall have duly performed and complied in all
material respects with all agreements and covenants required by this Agreement
to be performed or complied with it prior to or at the Effective Time, except
where the failure to so perform and comply, individually or in the aggregate,
would not have


                                       53

<PAGE>   495

or would not be reasonably likely to have a Material Adverse Effect on BANCORP
and BANK, taken as a whole, or upon the consummation of the transactions
contemplated hereby; (c) none of the events or conditions entitling ROSE to
terminate this Agreement under Article 8 shall have occurred and be continuing;
and (d) BANCORP shall have delivered to ROSE certificates dated the date of the
Effective Time and signed by a duly authorized officer to the effect set forth
in Subsections 7.3.1(a), (b) and (c);

               7.3.2 Counsel for ROSE shall have approved, in the exercise of
counsel's reasonable discretion, the validity of all transactions herein
contemplated, as well as the form and substance of all opinions, certificates,
instruments of transfer and other documents to be delivered to ROSE hereunder or
that are reasonably requested by such counsel;

               7.3.3 There shall not have been any change in the consolidated
financial condition, aggregate consolidated net assets, shareholders' equity,
business, or consolidated operating results of BANCORP and its Subsidiaries,
taken as a whole, from December 31, 1997 to the Effective Time that results in a
Material Adverse Effect as to BANCORP and its Subsidiaries, taken as a whole;

               7.3.4 BANCORP has taken such action as appropriate to convert
ROSE stock options to BANCORP stock options adjusted for the Conversion Rate;

               7.3.5 Prior to the Closing Date, BANCORP shall have taken all
corporate action required to effectuate the appointment of the four individuals
named on Schedule 2.9 hereto to its Board of Directors effective immediately
after the Effective Time;

               7.3.6 BANCORP shall have delivered its Closing Schedules to ROSE
on the day immediately preceding the Closing Date and none of such Closing
Schedules shall reflect any item that was not on the BANCORP Schedules (or in
the BANCORP Financial Statements) delivered on the date of execution of this
Agreement that has had, or would have a Material Adverse Effect on BANCORP and
its Subsidiaries, taken as a whole, at or after the Effective Time, or on the
consummation of the transactions contemplated hereby;

               7.3.7 The fairness opinion (the "ROSE Fairness Opinion") to be
commissioned by ROSE's Board of Directors shall provide that the terms of the
Merger, from a financial standpoint, are fair to the shareholders of ROSE, and
shall not have been revoked, at any time prior to the meeting of ROSE's
shareholders at which the Merger is to be voted on;

               7.3.8 BANCORP shall have entered into agreements with those
employees of ROSE listed on Schedule 7.3.8 which provide that if such employee
ceases to be employed by BANCORP within a two year period from the Effective
Time, such employee shall not compete with either BANCORP or R1NB. In addition,
such agreements shall provide that in the event employee's employment with
BANCORP ceases due to employee's termination by BANCORP, employee shall receive
a consulting agreement providing for two years base salary for consulting
services for a two year period;

               7.3.9 BANCORP shall have appointed Richard Seeba as Executive
Vice President of BANCORP;


                                       54

<PAGE>   496

               7.3.10 The sale of the BANCORP Common Stock resulting from the
Merger shall have been qualified or registered with the appropriate State
securities law or "blue sky" regulatory authorities of all States in which
qualification or registration is required under the State securities laws, and
such qualifications or registration shall not have been suspended or revoked;
and

               7.3.11 None of BANCORP or any of its Subsidiaries shall be
subject to any memorandum of understanding, cease and desist order, or other
agreement with any Governmental Entity restricting the conduct of any of their
respective businesses, prospects and operations, so as to have a Material
Adverse Effect.

                 ARTICLE 8. TERMINATION, AMENDMENTS AND WAIVERS

        Section 8.1 TERMINATION. This Agreement may be terminated at any time
prior to the Effective Time:

               8.1.1 By mutual consent of the Boards of Directors of BANCORP and
ROSE;

               8.1.2 By BANCORP or ROSE upon the failure to satisfy any
conditions specified in Section 7.1 if such failure is not caused by any action
or inaction of the party requesting termination of this Agreement;

               8.1.3 By BANCORP or ROSE if an Acquisition Event involving the
other party shall have occurred;

               8.1.4 By ROSE if there shall have been a material breach of any
of the representations or warranties of BANCORP set forth in this Agreement,
which breach, in the reasonable opinion of ROSE, by its nature cannot be cured
or is not cured prior to the Closing and which breach would, in the reasonable
opinion of ROSE, individually or in the aggregate, have, or be reasonably likely
to have, a Material Adverse Effect on BANCORP and its Subsidiaries, taken as a
whole, or upon the consummation of the transactions contemplated hereby;

               8.1.5 By BANCORP if there shall have been a material breach of
any of the representations or warranties of ROSE set forth in this Agreement,
which breach, in the reasonable opinion of BANCORP, by its nature cannot be
cured or is not cured prior to the Closing and which breach would, in the
reasonable opinion of BANCORP, individually or in the aggregate, have, or be
reasonably likely to have, a Material Adverse Effect on ROSE and its
Subsidiaries, taken as a whole, or upon the consummation of the transactions
contemplated hereby;

               8.1.6 By ROSE after the occurrence of a Default by BANCORP and
the continuance of such Default for a period of 20 Business Days after written
notice of such Default, if such Default, in the reasonable opinion of ROSE,
cannot be cured prior to the Closing or, even though curable by the Closing, it
is not cured prior to the Closing;

               8.1.7 By BANCORP after the occurrence of a Default by ROSE and
the continuance of such Default for a period of 20 Business Days after written
notice of such Default, if such Default,


                                       55

<PAGE>   497

in the reasonable opinion of BANCORP, cannot be cured prior to the Closing or,
even though curable by the Closing, it is not cured prior to the Closing;

               8.1.8 By BANCORP if the Closing Schedules delivered by ROSE
disclose the occurrence of an event or the existence of any facts or
circumstances, not disclosed in the Schedules or the ROSE Financial Statements
delivered to BANCORP on or before the date hereof, that has had or could
reasonably be expected to have a Material Adverse Effect on ROSE and its
Subsidiaries, taken as a whole, or after the Effective Time, on BANCORP, or on
the consummation of the transactions contemplated hereby (a "ROSE Material
Adverse Event");

               8.1.9 By ROSE if the Closing Schedules delivered by BANCORP
disclose the occurrence of an event or the existence of any facts or
circumstances, not disclosed in the Schedules or the BANCORP Financial
Statements delivered to ROSE on or before the date hereof, that has had or could
reasonably be expected to have a Material Adverse Effect on BANCORP and its
Subsidiaries, taken as a whole, or on the consummation of the transactions
contemplated hereby (a "BANCORP Material Adverse Event");

               8.1.10 By ROSE upon the failure of any of the conditions
specified in Section 7.3 to have been satisfied prior to December 31, 1998; or

               8.1.11 By BANCORP upon the failure of any of the conditions
specified in Section 7.2 to have been satisfied prior to December 31, 1998.

        Section 8.2 EFFECT OF TERMINATION; SURVIVAL. Except as provided in
Section 8.5, no termination of this Agreement as provided in Section 8.1 for any
reason or in any manner shall release, or be construed as so releasing, any
party hereto from its obligations pursuant to Sections 5.1.4, 5.5, 8.5 or 9.5
hereof or from any liability or damage to any other party hereto arising out of,
in connection with, or otherwise relating to, directly or indirectly, said
party's material breach, Default or failure in performance of any of its
covenants, agreements, duties or obligations arising hereunder, or any breaches
of any representation or warranty contained herein arising prior to the date of
termination of this Agreement.

        Section 8.3 AMENDMENT. This Agreement may be amended by the parties
hereto, at any time before or after approval hereof by the shareholders of ROSE
and BANCORP; provided, however, that after any such approval by such
shareholders, no amendments shall be made which by law require further approval
by such shareholders without such further approval.

        Section 8.4 WAIVER. Any term or provision of this Agreement, other than
regulatory approval or any of the provisions required by law, may be waived in
writing at any time by the party which is, or whose shareholders are, entitled
to the benefits thereof.

        Section 8.5 LIQUIDATED DAMAGES; CANCELLATION FEE.

               8.5.1 In the event of the occurrence of (i) an Acquisition Event
involving ROSE, then ROSE shall pay to BANCORP the sum of Five Hundred Thousand
Dollars ($500,000) in cash; or (ii) an Acquisition Event involving BANCORP, then
BANCORP shall pay to ROSE the sum of Five Hundred Thousand Dollars ($500,000) in
cash.


                                       56

<PAGE>   498

               8.5.2 In the event of termination of this Agreement by ROSE
pursuant to Section 8.1.10 as a result of the revocation of the ROSE Fairness
Opinion; or a termination of this Agreement by BANCORP pursuant to (i) Section
8.1.2 (no approval by ROSE shareholders), or (ii) pursuant to Section 8.1.5
(breach of representations or warranties of ROSE) or Section 8.1.7 (Default) or
Section 8.1.8 (disclosure in the Closing Schedules of a ROSE Material Adverse
Event), where such breach of representation or warranty, Default or ROSE
Material Adverse Event shall have been caused in whole or in material part by
any action or inaction within the control of ROSE or any of its Subsidiaries, or
any of their directors or executive officers (it being understood that any
breach or Default or ROSE Material Adverse Event that occurred after the date of
this Agreement and was outside of the control of ROSE and its Subsidiaries, and
the directors and executive officers thereof, such as, by way of example only,
the filing of a lawsuit against ROSE, shall not come within this Section 8.5.2),
then, ROSE shall pay to BANCORP the sum of Two Hundred Thousand Dollars
($200,000), in cash; provided, however, that if an Acquisition Event occurs
involving ROSE within one hundred eighty (180) days following any termination by
BANCORP to which this Section 8.5.2 applies, ROSE shall pay to BANCORP an
additional Three Hundred Thousand Dollars ($300,000) in cash.

               8.5.3 In the event of the termination of this Agreement by
BANCORP pursuant to Section 8.1.11 as a result of the revocation of the BANCORP
Fairness Opinion; or a termination of this Agreement by ROSE pursuant to (i)
Section 8.1.2 (no approval by BANCORP Shareholders), or (ii) 8.1.4 (breach of
representations and warranties of BANCORP) or Section 8.1.6 (Default), or
Section 8.1.9 (disclosure in Closing Schedules of a BANCORP Material Adverse
Event), where such breach of representation or warranty, or such Default or
BANCORP Material Adverse Event shall have been caused in whole or in material
part by any action or inaction within the control of BANCORP or any of its
Subsidiaries, or any of their directors or executive officers (it being
understood that any action or inaction outside of the control of BANCORP, its
Subsidiaries and their directors and executive officers, such as, by way of
example only, the filing of a lawsuit against BANCORP, shall not come within
this Section 8.5.3), then, BANCORP shall pay to ROSE the sum of Two Hundred
Thousand Dollars ($200,000), in cash; provided, however, that if an Acquisition
Event occurs involving BANCORP within one hundred eighty (180) days following
any termination by ROSE to which this Section 8.5.3 applies, BANCORP shall pay
to ROSE an additional Three Hundred Thousand Dollars ($300,000) in cash.

               8.5.4 The parties have determined that the occurrence of any of
the events or circumstances set forth in Sections 8.5.1, 8.5.2 and 8.5.3 would
cause a substantial damage and loss and lost business opportunities to the party
terminating this Agreement as a result thereof and that the payments
contemplated by Sections 8.5.1, 8.5.2 and 8.5.3 above provide reasonable and
fair compensation for such damage, loss and lost business opportunities and are
not intended to be and do not constitute a penalty or forfeiture. Such payments
will be made within 10 Business Days following a termination of the Agreement
that gives rise to the payment of such liquidated damages pursuant to Sections
8.5.1, 8.5.2 or 8.5.3, as applicable. Upon the making and receipt of payments
due under this Section 8.5, neither party, nor any Affiliates of any party,
shall have any further obligation or liability of any kind under this Agreement
to the other party, except pursuant to Section 5.1.4, 5.5 and 9.5.

               8.5.5 In the event of the termination of this Agreement by
BANCORP or ROSE and for any reason other than as specified in Sections 8.5.1,
8.5.2 or 8.5.3 above, none of the parties


                                       57

<PAGE>   499

hereto, nor any Affiliates of any such parties, shall have any further
obligation or liability of any kind to the other party, except pursuant to
Sections 5.1.4, 5.5 and 9.5.


                          ARTICLE 9. GENERAL PROVISIONS

        Section 9.1 NONSURVIVAL OF REPRESENTATIONS AND WARRANTIES. None of the
representations, warranties, covenants and agreements in this Agreement or in
any instrument delivered pursuant to this Agreement shall survive the Effective
Time, except for those covenants and agreements contained herein and therein
which by their terms apply in whole or in part after the Effective Time or to a
termination of this Agreement.

        Section 9.2 NOTICES. All notices and other communications hereunder
shall be in writing and shall be deemed given if delivered personally, mailed by
registered or certified mail (return receipt requested), sent by confirmed
overnight courier or telecopied (with electronic confirmation and verbal
confirmation for the person to whom such telecopy is addressed), on the date
such notice is so delivered, mailed or sent, as the case may be, to the parties
at the following addresses (or any such other address for a party as shall be
specified by like notice):

        If to ROSE at:
                             Roseville 1st Community Bancorp
                             1801 Douglas Boulevard
                             Roseville, California  95661
                             Fax No. (916) 773-5500
                             Attention: Richard Seeba, President/CEO

        with a copy to:
                             Pillsbury, Madison & Sutro, LLP
                             400 Capitol Mall, 17th Floor
                             Sacramento, California  95814
                             Fax No. (916) 441-3583
                             Attention: Cary C. Boyden, Esq.

        If to BANCORP at:
                             Western Sierra Bancorp
                             4011 Plaza Goldorado Circle
                             Cameron Park, California 95682
                             Fax No. (530) 677-5075
                             Attention: Gary D. Gall, President/CEO

        with a copy to:
                             Gary Steven Findley & Associates
                             1470 North Hundley Street
                             Anaheim, California 92806
                             Fax No. (714) 630-7910
                             Attention: Gary Steven Findley, Esq.


                                       58

<PAGE>   500

        Section 9.3 COUNTERPARTS. This Agreement may be executed in one or more
counterparts, all of which shall be considered one and the same agreement, and
shall become effective when one or more counterparts have been signed by each of
the parties and delivered to the other parties, it being understood that all
parties need not sign the same counterpart.

        Section 9.4 ENTIRE AGREEMENT/NO THIRD PARTY RIGHTS/ASSIGNMENT. This
Agreement (including the documents and instruments referred to herein): (a)
constitutes the entire agreement and supersedes all prior agreements and
understandings, both written and oral, among the parties with respect to the
subject matter hereof; (b) except as expressly set forth herein, is not intended
to confer upon any person other than the parties hereto any rights or remedies
hereunder; (c) shall not be assigned by a party, by operation of law or
otherwise, without the consent of the other parties; and (d) subject to the
foregoing, shall be binding upon and shall inure to the benefit of the parties
hereto and their permitted successors and assigns.

        Section 9.5 NONDISCLOSURE OF AGREEMENT. BANCORP and ROSE agree, except
as required by law or the rules of the NASDAQ, so long as this Agreement is in
effect, not to issue any public notice, disclosure or press release with respect
to the transactions contemplated by this Agreement without seeking the consent
of the other party, which consent shall not be unreasonably withheld.

        Section 9.6 GOVERNING LAW. This Agreement shall be governed and
construed in accordance with the laws of the State of California, without regard
to any applicable conflicts of law.

        Section 9.7 HEADINGS/TABLE OF CONTENTS. The table of contents and
headings contained in this Agreement are for reference purposes only and shall
not affect in any way the meaning or interpretation of this Agreement.

        Section 9.8 ENFORCEMENT OF AGREEMENT. The parties hereto agree that
irreparable damage will occur in the event that any of the provisions of this
Agreement or the Bank Merger Agreement is not performed in accordance with its
specific terms or is otherwise breached. It is accordingly agreed that the
parties shall be entitled to an injunction or injunctions to prevent breaches of
this Agreement and to enforce specifically the terms and provisions hereof in
any court of the State of California or any state having jurisdiction, this
being in addition to any remedy to which they are entitled at law or in equity.

        Section 9.9 SEVERABILITY. Any term or provision of this Agreement which
is invalid or unenforceable in any jurisdiction shall, as to that jurisdiction,
be ineffective to the extent of such invalidity or unenforceability without
rendering invalid or unenforceable the remaining terms and provisions of this
Agreement or affecting the validity or enforceability of any of the terms or
provisions of this Agreement in any other jurisdiction. If any provision of this
Agreement is so broad as to be unenforceable, the provision shall be interpreted
to be only so broad as is enforceable.

        Section 9.10 ATTORNEYS' FEES. If any legal action or any arbitration
upon mutual agreement is brought for the enforcement of this Agreement or
because of an alleged dispute, breach or default in connection with this
Agreement, the prevailing party shall be entitled to recover reasonable
attorneys' fees and other costs and expenses incurred in that action or
proceeding, in addition to any other relief to which it may be entitled.


                                       59

<PAGE>   501

IN WITNESS WHEREOF, BANCORP and ROSE have caused this Agreement to be signed by
their respective officers thereunto duly authorized, all as of the date first
above written.

WESTERN SIERRA BANCORP                       ROSEVILLE 1ST COMMUNITY BANCORP


By: /s/ JOSEPH A. SURRA                      By: /S/ THOMAS MANZ
    ----------------------------------          --------------------------------
Name:   Joseph A. Surra                      Name:   Thomas Manz



By: /S/ GARY D. GALL                         By: /S/ RICHARD C. SEEBA
    ----------------------------------          --------------------------------
Name:   Gary D. Gall                         Name:   Richard C. Seeba



                                       60

<PAGE>   502

                         INDEX OF EXHIBITS AND SCHEDULES
                       PREVIOUSLY DELIVERED BY THE PARTIES

                                    Exhibits
                                    --------

Exhibit 2.1                Form of Merger Agreement
Exhibit 5.3                Form of Affiliate Agreements
Exhibit 7.1.7A             Form of Opinion of ROSE Counsel
Exhibit 7.1.7B             Form of Opinion of BANCORP Counsel
Exhibit 7.2.10             Form of Director-Shareholder Agreements

                                    Schedules
                                    ---------

Schedule 2.9               ROSE Directors
Schedule 2.10              KSOP Trustees
Schedule 3.2               Licenses and Permits
Schedule 3.3               Subsidiaries
Schedule 3.4               Required Consents and Conflicts
Schedule 3.5               ROSE Stock Options
Schedule 3.8               Compliance with Laws
Schedule 3.9               Litigation
Schedule 3.11              Insurance Policies
Schedule 3.12              Title Exceptions
Schedule 3.13              Real Property
Schedule 3.14              Tax Matters
Schedule 3.15              Performance of Obligations
Schedule 3.16              Loans and Investments
Schedule 3.17              ROSE's Brokers and Finders
Schedule 3.18              Material Contracts
Schedule 3.20              Undisclosed Liabilities
Schedule 3.21              Employees; Employee Benefit Plans; ERISA
Schedule 3.23              Potential Environmental Liabilities
Schedule 3.24              Stock Option Plans
Schedule 4.2               Licenses and Permits
Schedule 4.3               Subsidiaries
Schedule 4.4               Required Consents and Conflicts
Schedule 4.8               Compliance with Laws
Schedule 4.9               Litigation
Schedule 4.11              Insurance Policies
Schedule 4.12              Title Exceptions
Schedule 4.13              Real Property
Schedule 4.14              Performance of Obligations
Schedule 4.15              BANCORP's Brokers and Finders
Schedule 4.17              Undisclosed Liabilities
Schedule 4.18              Tax Matters
Schedule 4.19              Potential Environmental Liabilities
Schedule 4.20              Employees
Schedule 4.22              Loans and Investments
Schedule 4.23              Material Contracts
Schedule 6.2.11            Pay or Benefit Increases
Schedule 7.3.8             ROSE Employee List


                                       61

<PAGE>   503

                        FIRST AMENDMENT TO AGREEMENT AND
                        PLAN OF REORGANIZATION AND MERGER


This First Amendment to Agreement and Plan of Reorganization and Merger dated as
of December __, 1998 (the "Amendment") is entered into by and among Western
Sierra Bancorp ("BANCORP") and Roseville 1st Community Bancorp ("ROSE").

                                    RECITALS

         WHEREAS, BANCORP and ROSE have entered into that certain Agreement and
Plan of Reorganization and Merger dated as of July 2, 1998 (the "Agreement")
providing for the merger of ROSE with and into BANCORP, with BANCORP as the
surviving corporation;

         WHEREAS, BANCORP and ROSE each agree that it is in the best interests
of the respective corporations to determine and fix the Conversion Rate; and

         WHEREAS, BANCORP and ROSE desire to amend the Agreement to fix the
Conversion Rate, to make corresponding changes to the Agreement to delete the
language providing the formula for the calculation of the Conversion Rate, and
to change the termination dates in Sections 8.1.10 and 8.1.11 of the Agreement;

         NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, BANCORP and ROSE hereto agrees as
follows:

1.       Amendment of ARTICLE 1. DEFINITIONS of the Agreement. The following
         definitions shall be deleted from ARTICLE 1.

                  "BANCORP Book Value Per Share"
                  "BANCORP's Costs Associated With the Transaction"
                  "Determination Date"
                  "ROSE Book Value Per Share"
                  "ROSE's Costs Associated With the Transaction"

         The following definition shall be revised to read as follow:

                           "Conversion Rate" shall mean 1.2110.

2.       Deletion of Section 5.5.2 of the Agreement. Section 5.5.2 of the
         Agreement shall be deleted in its entirety.

3.       Deletion of Section 5.8 of the Agreement. Section 5.8 of the Agreement
         shall be deleted in its entirety.

4.       Amendment of Section 8.1.10 of the Agreement. Section 8.1.10 of the
         Agreement is amended to read in full as follows:



<PAGE>   504


                                    8.1.10 By ROSE upon the failure of any of
                  the conditions specified in Section 7.3 to have been satisfied
                  prior to March 31, 1999; or

5.       Amendment of Section 8.1.11 of the Agreement. Section 8.1.11 of the
         Agreement is amended to read in full as follows:

                                    8.1.11 By BANCORP upon the failure of any of
                  the conditions specified in Section 7.2 to have been satisfied
                  prior to March 31, 1999.

6.       References. Upon execution and delivery of this Amendment, all
         references in the Agreement to the "Agreement," and the provisions
         thereof, shall be deemed to refer to the Agreement, as amended by this
         Amendment.

7.       No other Amendments or Changes. Except as expressly amended or modified
         by this Agreement, all of the terms and conditions of the Agreement
         shall remain unchanged and in full force and effect.

8.       Definitions. All capitalized terms used herein and not otherwise
         defined or amended shall have the meanings given to them in the
         Agreement.

IN WITNESS WHEREOF, the parties hereto have duly executed this Amendment as of
the day and year first above written.

WESTERN SIERRA BANCORP                      ROSEVILLE 1ST COMMUNITY BANCORP



By: /s/ Gary D. Gall                     By:   /s/ Richard C. Seeba
    --------------------------------           ---------------------------------
Name: Gary D. Gall, President & CEO      Name: Richard C. Seeba, President & CEO
      ------------------------------            --------------------------------


By: /s/ O. I. Scariot                    By:   /s/ Thomas C. Walker
    --------------------------------           ---------------------------------
Name: O. I. Scariot, Secretary           Name: Thomas C. Walker, Secretary
      ------------------------------           ---------------------------------



                                        2

<PAGE>   505
                                                                     EXHIBIT III


[FINDLEY GROUP LETTERHEAD]


                                                               December 24, 1998



Members of the Board of Directors
Western Sierra Bancorp
4011 Plaza Goldorado Circle
Cameron Park, California 95682


Members of the Board:

You have requested our opinion as investment bankers as to the fairness, from a
financial standpoint, to the shareholders of Western Sierra Bancorp, Cameron
Park, California ("Bancorp") of the terms of the proposed merger of LMC Merger
Company, Cameron Park, California ("LMC"), a wholly owned subsidiary of Bancorp
and Lake Community Bank, Lakeport, California ("LCB") whereby LCB shall become a
wholly owned subsidiary of Bancorp as defined in the Agreement and Plan of
Reorganization and Merger entered into as of May 27, 1998 and the First
Amendment to Agreement and Plan of Reorganization and Merger dated December 24,
1998 (collectively referred to as the "Agreement"). Pursuant to the Agreement
and subject to the terms and conditions therein, each share of LCB Common Stock
issued and outstanding at the Effective Time shall, on and at the Effective
Time, pursuant to the Agreement be exchanged for and converted into the right to
receive shares of Bancorp Common Stock equal to the Conversion Rate. The
Conversion Rate has been fixed as 0.6905.

As part of its investment banking business, The Findley Group is continually
engaged in the valuation of bank, bank holding company and thrift securities in
connection with mergers and acquisitions nationwide. We have previously provided
investment banking and financial advisory services to Bancorp.

In arriving at our opinion, we have reviewed and analyzed, among other things,
the following: (i) the Agreement; (ii) Annual Reports to Shareholders of Bancorp
and LCB for the years ended December 31, 1997 and December 31, 1996; (iii)
Quarterly Call Reports for the Quarters ended September 30, 1998, June 30, 1998,
March 31, 1998 , December 31, 1997, September 30, 1997, June 30, 1997, March 31,
1997 and December 31, 1996 for LCB and Western Sierra National Bank, a wholly
owned subsidiary of Bancorp; (iv) certain other publicly available financial and
other information concerning Bancorp and LCB; and (v) publicly available
information


<PAGE>   506


Board of Directors - 2 -                                    December 24, 1998


concerning other banks and holding companies, the trading markets for their
securities and the nature and terms of certain other merger transactions we
believe relevant to our inquiry. We have held discussions with senior management
of Bancorp concerning their past and current operations, financial condition and
prospects, as well as the results of regulatory examinations.

We have reviewed with senior management of Bancorp earnings projections for 1998
through 2001 for Bancorp as a stand-alone entity, assuming the Merger does not
occur, using 1998 estimated earnings prepared by Bancorp and an assumed growth
of ten percent (10%) per year. We reviewed earnings projections for 1998 through
2001 for LCB as a stand-alone entity, assuming the Merger does not occur, using
1998 estimated earnings and an assumed growth of ten percent (10%) per year. We
also reviewed Bancorp's projected operating cost savings and earnings
enhancement opportunities of at least ten percent (10%) of LCB's noninterest
expense, expected to be achieved in each such years resulting from the Merger.
Certain pro forma financial projections for the combined entity were derived by
us based partially upon the projections discussed above, as well as our own
assessment of general economic, market and financial conditions.

In conducting our review and in arriving at our opinion, we have relied upon and
assumed the accuracy and completeness of the financial and other information
provided to us or publicly available, and we have not assumed any responsibility
for independent verification of the same. We have relied upon the management of
Bancorp as to the reasonableness of the 1998 financial forecasts, projections
and projected operating cost savings and earnings enhancement opportunities (and
the assumptions and bases therefor) provided to us, and we have assumed that
such forecasts, projections and projected operating cost savings and earnings
enhancement opportunities reflect the best currently available estimates and
judgements of Bancorp. We have also assumed, without assuming any responsibility
for the independent verification of the same, that the aggregate allowances for
loan losses for Bancorp and LCB are adequate to cover such losses. We have not
made or obtained any evaluations or appraisals of the property of Bancorp or
LCB, nor have we examined any individual loan credit files. For purposes of this
opinion, we have assumed that the Merger will have the tax, accounting and legal
effects described in the Agreement and assumed the accuracy of the disclosures
set forth in the Agreement. Our opinion as expressed herein is limited to the
fairness, from a financial standpoint, to the holders of the shares of Bancorp
Common Stock of the terms of the proposed merger of LCB with and into LMC with
LCB as the Surviving Corporation and a wholly owned subsidiary of Bancorp and
does not address Bancorp's underlying business decision to proceed with the
Merger.

We have considered such financial and other factors as we have deemed
appropriate under the circumstances, including among others the following: (i)
the historical and current financial position and results of operations of
Bancorp and LCB; (ii) the assets and liabilities of Bancorp and LCB, including
the loan and investment portfolios, deposits, other liabilities, historical and
current liability sources and costs and liquidity; and (iii) the nature and
terms of certain other merger transactions involving banks and bank holding
companies. We have also taken into account our assessment of general economic,
market and financial conditions and our experience in other transactions, as
well


<PAGE>   507


Board of Directors - 3 -                                    December 24, 1998

as our experience in securities valuation and our knowledge of the banking
industry generally. Our opinion is necessarily based upon conditions as they
exist and can be evaluated on the date hereof.

Based upon and subject to the foregoing, we are of the opinion as investment
bankers that, as of the date hereof, the terms of the proposed merger are fair,
from a financial standpoint, to the holders of the shares of Bancorp Common
Stock.

This opinion may not be used or referred to by Bancorp or quoted or disclosed to
any person in any manner without our prior written consent, with the exception
of submission to the regulatory agencies as part of the applications and
included in the proxy materials provided to shareholders of Bancorp in relation
to approval of the Merger. This opinion is not intended to be and shall not be
deemed to be a recommendation to any shareholder of Bancorp as to how such
shareholder should vote with respect to the Merger.

                                                   Respectfully submitted,

                                                   THE FINDLEY GROUP




                                                   Gary Steven Findley
                                                   Director




<PAGE>   508

                                                                      EXHIBIT IV

                    [THE BANC STOCK GROUP, INC. LETTERHEAD]


December 24, 1998

Board of Directors
LAKE COMMUNITY BANK
805 Eleventh St
Lakeport, CA 95453

RE: FAIRNESS OPINION LAKE COMMUNITY BANK/WESTERN SIERRA BANCORP

You have requested our opinion as investment bankers as to the fairness, from a
financial point of view, to the holders of common shares of Lake Community Bank
("LCB") of the consideration to be received by LCB, in the proposed merger (the
"Merger") of LCB with and into Western Sierra Bancorp ("WSB") whereby LCB shall
become a wholly owned subsidiary of WSB. Pursuant to the Agreement and Plan of
Reorganization and Merger entered into as of May 27, 1998 and the First
Amendment to Agreement and Plan of Reorganization and Merger dated December 24,
1998 (collectively referred to as the "Agreement". Pursuant to the Agreement and
subject to the terms and conditions contained therein, each share of LCB Common
Stock issued and outstanding at the Effective Time shall, on and at the
Effective Time, pursuant to the Agreement be exchanged for and converted into
the right to receive shares of WSB Common Stock, equal to the Conversion Rate.
The Conversion Rate has been fixed as 0.6905.

We have acted for LCB and for the Board of Directors as financial advisor in
connection with this transaction and have received a fee for our services. We
have previously provided investment banking and financial advisory services to
LCB. We have not provided investment banking or financial advisory services to
WSB. We are not a market maker in LCB's common shares.

In arriving at our opinion, we have reviewed and analyzed, among other things,
the following: (I) the Agreement; (II) certain publicly available financial and
other data with respect to LCB and WSB including consolidated financial
statements for the years 1996 and 1997 and quarterly reports to September 30,
1998; (III) certain other publicly available financial and other information
concerning LCB and WSB; (IV) publicly available information concerning other
banks and holding companies, the trading markets for their securities and the
nature and terms of certain other merger transactions we believed relevant to
our inquiry; and (V) evaluations and analyses prepared and presented to the
Board of Directors of LCB thereof in connection with the Merger. We have held
discussions with senior management of LCB concerning LCB's past and current
operations, and financial condition as well as the results of regulatory
examinations.



<PAGE>   509

Lake Community Bank/Fairness Opinion
December 24, 1998
Page Two


We have reviewed with senior management of LCB 1998 earnings projections for LCB
as a stand-alone entity, assuming the Merger does not occur, prepared by LCB. We
have also reviewed with the senior management of LCB the projected operating
cost-savings of ten percent of LCB's non-interest expense reasonably expected by
WSB resulting from the Merger with LCB. Certain pro forma financial projections
for the combined companies and for LCB as a stand-alone entity were derived by
us based upon the 1998 earnings projections and projected operating cost savings
discussed above, as well as our own assessment of general economic, market and
financial conditions.

In conducting our review and in arriving at our opinion, we have relied upon and
assumed the accuracy and completeness of the financial and other information
provided to us or publicly available, and we have not assumed any responsibility
for independent verification of the same. We have relied upon the management of
both LCB and WSB as to the reasonableness of the 1998 financial and operating
forecasts and projected operating cost savings(and the assumptions and bases
thereof) provided to us, and we have assumed that such 1998 forecasts and
projected operating cost savings reflect the best currently available estimates
and judgements of the applicable managements. We have also assumed, without
assuming any responsibility for the independent verification of same, that the
aggregate allowances for loan losses for LCB and WSB are adequate to cover such
losses. We have not made or obtained any evaluations or appraisals of the
property of LCB or WSB, nor have we examined any individual loan credit files.
For purposes of this opinion, we have assumed that the Merger will have the tax,
accounting and legal effects (including, without limitation, that the Merger
will be accounted for as a pooling-of-interests) described in the Agreement and
assumed the accuracy of the disclosures set forth in the Agreement. Our opinion
as expressed herein is limited to the fairness, from a financial point of view,
to the holders of common shares of LCB of the Exchange Formula as described in
the Merger as set forth in the Agreement and does not address LCB's underlying
business decision to proceed with the Merger.

We have considered such financial and other factors as we have deemed
appropriate under the circumstances, including among others the following: (I)
the historical and current financial positions and results of operations of LCB
and WSB, including interest income, interest expense, net interest income, net
interest margin, provision for loan losses, non-interest income, non-interest
expense, earnings, dividends, internal capital generation, book value,
intangible assets, return on assets, return on shareholders' equity,
capitalization, the amount and type of non-performing assets, loan losses and
the reserve for loan losses, all as set forth in the financial statements for
LCB and for WSB; (II) the assets and liabilities for LCB and WSB, including the
loan, investment and mortgage portfolios, deposits, other liabilities,
historical and current liability sources and costs and liquidity; and (III) the
nature and terms of certain other merger transactions involving banks and bank
holding companies. We have also taken into account our assessment of general
economic, market and financial conditions and our experience in other




<PAGE>   510

Lake Community Bank/Fairness Opinion
December 24, 1998
Page Three


transactions, as well as our experience in securities valuation and our
knowledge of the banking industry generally. Our opinion is necessarily based
only upon conditions as they exist and can be evaluated on the date hereof and
the information made available to us through the date hereof.

It is understood that this letter is for the information of the Board of
Directors of LCB and may not be relied upon by any other person or used for any
other purpose without our prior written consent except a copy of this letter may
be included in LCB's proxy statement with respect to the Merger. This letter
does not constitute a recommendation to the Board of Directors or to any
shareholder of LCB with respect to any approval of the Merger.

Based upon and subject to the foregoing, we are of the opinion as investment
bankers that, as of the date hereof, the Conversion Rate of the Merger as set
forth in the Agreement is fair, from a financial point of view, to the holders
of the common shares of LCB.

Very truly yours,

THE BANC STOCK GROUP, INC


/s/ EDWARD E. SCHMIDT
- -------------------------------
Edward E. Schmidt
Executive Vice President

Encl. FAIRNESS OPINION REPORT, DATED MAY 27, 1998 (previously provided under
      separate cover)

<PAGE>   511

                                                                      EXHIBIT V

                    [THE BANC STOCK GROUP, INC. LETTERHEAD]


December 24, 1998

Board of Directors
ROSEVILLE 1ST COMMUNITY BANCORP
1801 Douglas Boulevard
Roseville, California   95661

RE: "FAIRNESS OPINION" ROSEVILLE 1ST COMMUNITY BANCORP /WESTERN SIERRA BANCORP

Members of the Board:

You have requested our opinion as investment bankers as to the fairness, from a
financial point of view, to the holders of common shares of Roseville 1st
Community Bancorp ("ROSE") of the consideration to be received by ROSE, in the
proposed merger (the "Merger") of ROSE with and into Western Sierra Bancorp
("WSB") pursuant to the Agreement and Plan of Reorganization and Merger entered
into as of August 26, 1998 and the First Amendment to Agreement and Plan of
Reorganization and Merger dated December 24, 1998 (collectively referred to as
"the Agreement"). Pursuant to the terms and conditions contained therein, each
share of ROSE Common Stock issued and outstanding at the Effective Time shall,
on and at the Effective Time, pursuant to the Agreement be exchanged for and
converted into the right to receive shares of WSB Common Stock equal to the
Conversion Rate. The Conversion Rate has been fixed as 1.2110.

We have not acted for ROSE or for the Board of Directors as financial advisor in
connection with this transaction. We have not previously provided investment
banking and financial advisory services to ROSE. We have not provided investment
banking or financial advisory services to WSB. We are not a market maker in ROSE
common shares.

In arriving at our opinion, we have reviewed and analyzed, among other things,
the following: (I) the Agreement; (II) certain publicly available financial and
other data with respect to ROSE and WSB including consolidated financial
statements for the years 1996 and 1997 and quarterly periods to September 1998 ;
(III) certain other publicly available financial and other information
concerning ROSE and WSB; (IV) publicly available information concerning other
banks and holding companies, the trading markets for their securities and the
nature and terms of certain other merger transactions we believed relevant to
our inquiry; and (V) evaluations and analyses prepared for the Board of
Directors of ROSE thereof in connection with the Merger. We have held
discussions with senior management of ROSE concerning ROSE's past and current
operations, financial condition as well as the results of regulatory
examinations.






<PAGE>   512

Roseville 1st Community Bancorp/Fairness Opinion
December 24, 1998
Page Two


We have reviewed with senior management of ROSE 1998 earnings projections for
ROSE as a stand-alone entity, assuming the Merger does not occur, prepared by
ROSE. We have also reviewed with the senior management of ROSE the projected
operating cost savings of ten percent of ROSE's non-interest expense reasonably
expected by WSB to result from the Merger with ROSE. Certain pro forma financial
projections for the combined companies and for ROSE as stand-alone entity were
derived by us based upon the 1998 earnings projections and projected operating
cost savings discussed above, as well as our own assessment of general economic,
market and financial conditions.

In conducting our review and in arriving at our opinion, we have relied upon and
assumed the accuracy and completeness of the financial and other information
provided to us or publicly available, and we have not assumed any responsibility
for independent verification of the same. We have relied upon the management of
both ROSE and WSB as to the reasonableness of the 1998 financial and operating
forecasts and projected operating cost savings(and the assumptions and bases
therefor) provided to us, and we have assumed that such 1998 forecasts and
projected operating cost savings reflect the best currently available estimates
and judgements of the applicable managements. We have also assumed, without
assuming any responsibility for the independent verification of same, that the
aggregate allowances for loan losses for ROSE and WSB are adequate to cover such
losses. We have not made or obtained any evaluations or appraisals of the
property of ROSE or WSB, nor have we examined any individual loan credit files.
For purposes of this opinion, we have assumed that the Merger will have the tax,
accounting and legal effects (including, without limitation, that the Merger
will be accounted for as a pooling-of-interests) described in the Agreement and
assumed the accuracy of the disclosures set forth in the Agreement. Our opinion
as expressed herein is limited to the fairness, from a financial point of view,
to the holders of common shares of ROSE of the Exchange Formula as described in
the Merger as set forth in the Agreement and does not address ROSE underlying
business decision to proceed with the Merger.

We have considered such financial and other factors as we have deemed
appropriate under the circumstances, including among others the following: (I)
the historical and current financial positions and results of operations of ROSE
and WSB, including interest income, interest expense, net interest income, net
interest margin, provision for loan losses, non-interest income, non-interest
expense, earnings, dividends, internal capital generation, book value,
intangible assets, return on assets, return on shareholders' equity,
capitalization, the amount and type of non-performing assets, loan losses and
the reserve for loan losses, all as set forth in the financial statements for
ROSE and for WSB; (II) the assets and liabilities for ROSE and WSB, including
the loan, investment and mortgage portfolios, deposits, other liabilities,
historical and current liability sources and costs and liquidity; and (III) the
nature and terms of certain other merger transactions involving banks and bank
holding companies. We have also taken into account our assessment of general
economic, market and financial conditions and our experience in other
transactions, as well as our experience in securities valuation and our
knowledge of the banking industry generally. Our opinion is necessarily based
only upon conditions as



<PAGE>   513

Roseville 1st Community Bancorp/Fairness Opinion
December 24, 1998
Page Three


they exist and can be evaluated on the date hereof and the information made
available to us through the date hereof.

It is understood that this letter is for the information of the Board of
Directors of ROSE and may not be relied upon by any other person or used for any
other purpose without our prior written consent except a copy of this letter may
be included in ROSE proxy statement with respect to the Merger. This letter does
not constitute a recommendation to the Board of Directors or to any shareholder
of ROSE with respect to any approval of the Merger.

Based upon and subject to the foregoing, we are of the opinion as investment
bankers that, as of the date hereof, the Conversion Rate of the Merger as set
forth in the Agreement is fair, from a financial point of view, to the holders
of the common shares of ROSE.

Very truly yours,

THE BANC STOCK GROUP, INC


/s/ EDWARD E. SCHMIDT
- --------------------------------
Edward E. Schmidt
Executive Vice President

Encl. FAIRNESS OPINION REPORT, DATED JULY 2, 1998 (provided previously under
      separate cover)

<PAGE>   514
                                                                      EXHIBIT VI


                                   CHAPTER 13

                               DISSENTERS' RIGHTS

Right to require purchase -- "Dissenting shares" and "dissenting shareholder"
defined. Section 1300.
Demand for purchase. Section 1301.
Endorsement of shares. Section 1302.
Agreed price -- Time for payment. Section 1303.
Dissenter's action to enforce payment. Section 1304.
Appraisers' report -- Payment -- Costs. Section 1305.
Dissenting shareholder's status as creditor. Section 1306.
Dividends paid as credit against payment. Section 1307.
Continuing rights and privileges of dissenting shareholders. Section 1308.
Termination of dissenting shareholder status. Section 1309.
Suspension of proceedings for payment pending litigation. Section 1310.
Exempt shares. Section 1311.
Attacking validity of reorganization or merger. Section 1312.

SECTION 1300. RIGHT TO REQUIRE PURCHASE -- "DISSENTING SHARES" AND "DISSENTING
              SHAREHOLDER" DEFINED.

     (a) If the approval of the outstanding shares (Section 152) of a
corporation is required for a reorganization under subdivisions (a) and (b) or
subdivision (e) or (f) of Section 1201, each shareholder of the corporation
entitled to vote on the transaction and each shareholder of a subsidiary
corporation in a short-form merger may, by complying with this chapter, require
the corporation in which the shareholder holds shares to purchase for cash at
their fair market value the shares owned by the shareholder which are dissenting
shares as defined in subdivision (b). The fair market value shall be determined
as of the day before the first announcement of the terms of the proposed
reorganization or short-form merger, excluding any appreciation or depreciation
in consequence of the proposed action, but adjusted for any stock split, reverse
stock split or share dividend which becomes effective thereafter.

     (b) As used in this chapter, "dissenting shares" means shares which come
within all of the following descriptions:

         (1) Which were not immediately prior to the reorganization or
short-form merger either (A) listed on any national securities exchange
certified by the Commissioner of Corporations under subdivision (o) of Section
25100 or (B) listed on the list of OTC margin stocks issued by the Board of
Governors of the Federal Reserve System, and the notice of meeting of
shareholders to act upon the reorganization summarizes this section and
Sections 1301, 1302, 1303 and 1304; provided, however, that this provision does
not apply to any shares with respect to which there exists any restriction on
transfer imposed by the corporation or by any law or regulation; and provided,
further,

                                       1
<PAGE>   515

that this provision does not apply to any class of shares described in
subparagraph (A) or (B) if demands for payment are filed with respect to
5 percent or more of the outstanding shares of that class.

         (2) Which were outstanding on the date for the determination of
shareholders entitled to vote on the reorganization and (A) were not voted in
favor of the reorganization or, (B) if described in subparagraph (A) or (B) of
paragraph (1) (without regard to the provisos in that paragraph), were voted
against the reorganization, or which were held of record on the effective date
of a short-form merger; provided, however, that subparagraph (A) rather than
subparagraph (B) of this paragraph applies in any case where the approval
required by Section 1201 is sought by written consent rather than at a meeting.

         (3) Which the dissenting shareholder has demanded that the corporation
purchase at their fair market value, in accordance with Section 1301.

         (4) Which the dissenting shareholder has submitted for endorsement, in
accordance with Section 1302.

     (c) As used in this chapter, "dissenting shareholder" means the
recordholder of dissenting shares and includes a transferee of record. Leg.H.
1975 ch. 682 1976 ch. 641, effective January 1, 1997, 1982 ch. 36, effective
February 17, 1982, 1990 ch. 1018, 1993 ch. 543.

     1993 NOTE: Nothing in this act shall be construed to modify or alter the
prohibition contained in Sections 15503 and 15616 of the Corporations Code or
Section 1648 of the Insurance Code, or modify or alter any similar prohibition
relating to the operation of a business in limited partnership form. Stats.
1993 ch. 543 Section 24.

     Nothing in this act shall be construed to modify or impair any rights of
limited partners under the Thompson-Killea Limited Partners Protection Act of
1992 (Chapter 1183 of the Statutes of 1992). Stats. 1993 ch. 543 Section 25.

SECTION 1301. DEMAND FOR PURCHASE.

     (a) If, in the case of a reorganization, any shareholders of a corporation
have a right under Section 1300, subject to compliance with paragraphs (3) and
(4) of subdivision (b) thereof, to require the corporation to purchase their
shares for cash, such corporation shall mail to each such shareholder a notice
of the approval of the reorganization by its outstanding shares (Section 152)
within 10 days after the date of such approval, accompanied by a copy of
Sections 1300, 1302, 1303, 1304 and this section, a statement of the price
determined by the corporation to represent the fair market value of the
dissenting shares, and a brief description of the procedure to be followed if
the shareholder desires to exercise the shareholder's right under such
sections. The statement of price constitutes an offer by the corporation to
purchase at the price stated any dissenting shares as defined in subdivision
(b) of Section 1300, unless they lose their status as dissenting shares under
Section 1309.

                                       2
<PAGE>   516

     (b) Any shareholder who has a right to require the corporation to purchase
the shareholder's shares for cash under Section 1300, subject to compliance
with paragraphs (3) and (4) of subdivision (b) thereof, and who desires the
corporation to purchase such shares shall make written demand upon the
corporation for the purchase of such shares and payment to the shareholder in
cash of their fair market value. The demand is not effective for any purpose
unless it is received by the corporation or any transfer agent thereof (1) in
the case of shares described in clause (i) or (ii) of paragraph (1) of
subdivision (b) of Section 1300 (without regard to the provisos in that
paragraph), not later than the date of the shareholders' meeting to vote upon
the reorganization, or (2) in any other case within 30 days after the date on
which the notice of the approval by the outstanding shares pursuant to
subdivision (a) or the notice pursuant to subdivision (i) of Section 1110 was
mailed to the shareholder.

     (c) The demand shall state the number and class of the shares held of
record by the shareholder which the shareholder demands that the corporation
purchase and shall contain a statement of what such shareholder claims to be
the fair market value of those shares as of the day before the announcement of
the proposed reorganization or short-form merger. The statement of fair market
value constitutes an offer by the shareholder to sell the shares at such price.
Leg.H. 1975 ch. 682, 1976 ch. 641, effective January 1, 1997, 1980 chs. 501,
1155.

SECTION 1302. ENDORSEMENT OF SHARES.

     Within 30 days after the date on which notice of the approval by the
outstanding shares or the notice pursuant to subdivision (i) of Section 1110
was mailed to the shareholder, the shareholder shall submit to the corporation
at its principal office or at the office of any transfer agent thereof, (a) if
the shares are certificated securities, the shareholder's certificates
representing any shares which the shareholder demands that the corporation
purchase, to be stamped or endorsed with a statement that the shares are
dissenting shares or to be exchanged for certificates of appropriate
denomination so stamped or endorsed or (b) if the shares are uncertificated
securities, written notice of the number of shares which the shareholder
demands that the corporation purchase. Upon subsequent transfers of the
dissenting shares on the books of the corporation, the new certificates,
initial transaction statement, and other written statements issued therefor
shall bear a like statement, together with the name of the original dissenting
holder of the shares. Leg.H. 1975 ch. 682, effective January 1, 1997, 1986 ch.
766.

SECTION 1303. AGREED PRICE -- TIME FOR PAYMENT.

     (a) If the corporation and the shareholder agree that the shares are
dissenting shares and agree upon the price of the shares, the dissenting
shareholder is entitled to the agreed price with interest thereon at the legal
rate on judgments from the date of the agreement. Any agreements fixing the
fair market value of any dissenting shares as between the corporation and the
holders thereof shall be filed with the secretary of the corporation.


                                       3
<PAGE>   517
     (b) Subject to the provisions of Section 1306, payment of the fair market
value of dissenting shares shall be made within 30 days after the amount
thereof has been agreed or within 30 days after any statutory or contractual
conditions to the reorganization are satisfied, whichever is later, and in the
case of certificated securities, subject to surrender of the certificates
therefor, unless provided otherwise by agreement. Leg.H. 1975 ch. 682,
effective January 1, 1997, 1980 ch. 501, 1986 ch. 766.

SECTION 1304. DISSENTER'S ACTION TO ENFORCE PAYMENT.

     (a) If the corporation denies that the shares are dissenting shares, or
the corporation and the shareholder fail to agree upon the fair market value of
the shares, then the shareholder demanding purchase of such shares as
dissenting shares or any interested corporation, within six months after the
date on which notice of the approval by the outstanding shares (Section 152) or
notice pursuant to subdivision (i) of Section 1110 was mailed to the
shareholder, but not thereafter, may file a complaint in the superior court of
the proper county praying the court to determine whether the shares are
dissenting shares or the fair market value of the dissenting shares or both or
may intervene in any action pending on such a complaint.

     (b) Two or more dissenting shareholders may join as plaintiffs or be
joined as defendants in any such action and two or more such actions may be
consolidated.

     (c) On the trial of the action, the court shall determine the issues. If
the status of the shares as dissenting shares is in issue, the court shall
first determine that issue. If the fair market value of the dissenting shares
is in issue, the court shall determine, or shall appoint one or more impartial
appraisers to determine, the fair market value of the shares. Leg.H. 1975
ch. 682, effective January 1, 1997.

SECTION 1305. APPRAISERS' REPORT -- PAYMENT -- COSTS.

     (a) If the court appoints an appraiser or appraisers, they shall proceed
forthwith to determine the fair market value per share. Within the time fixed
by the court, the appraisers, or a majority of them, shall make and file a
report in the office of the clerk of the court. Thereupon, on the motion of any
party, the report shall be submitted to the court and considered on such
evidence as the court considers relevant. If the court finds the report
reasonable, the court may confirm it.

     (b) If a majority of the appraisers appointed fail to make and file a
report within 10 days from the date of their appointment or within such further
time as may be allowed by the court or the report is not confirmed by the
court, the court shall determine the fair market value of the dissenting shares.

     (c) Subject to the provisions of Section 1306, judgment shall be rendered
against the corporation for payment of an amount equal to the fair market value
of each dissenting share multiplied by the number of dissenting shares which
any dissenting shareholder who is a party, or


                                       4
<PAGE>   518
who has intervened, is entitled to require the corporation to purchase, with
interest thereon at the legal rate from the date on which judgment was entered.

     (d) Any such judgment shall be payable forthwith with respect to
uncertificated securities and, with respect to certificated securities, only
upon the endorsement and delivery to the corporation of the certificates for
the shares described in the judgment. Any party may appeal from the judgment.

     (e) The costs of the action, including reasonable compensation to the
appraisers to be fixed by the court, shall be assessed or apportioned as the
court considers equitable, but, if the appraisal exceeds the price offered by
the corporation, the corporation shall pay the costs (including in the
discretion of the court attorneys' fees, fees of expert witnesses and interest
at the legal rate on judgments from the date of compliance with Sections 1300,
1301 and 1302 if the value awarded by the court for the shares is more than
125 percent of the price offered by the corporation under subdivision (a) of
Section 1301). Leg.H. 1975 ch. 682, 1976 ch. 641, effective January 1, 1997,
1997 ch. 235, 1986 ch. 766.

SECTION 1306. DISSENTING SHAREHOLDER'S STATUS AS CREDITOR.

     To the extent that the provisions of Chapter 5 prevent the payment to any
holders of dissenting shares of their fair market value, they shall become
creditors of the corporation for the amount thereof together with interest at
the legal rate on judgments until the date of payment, but subordinate to all
other creditors in any liquidation proceeding, such debt to be payable when
permissible under the provisions of Chapter 5. Leg.H. 1975 ch. 682, effective
January 1, 1977.

SECTION 1307. DIVIDENDS PAID AS CREDIT AGAINST PAYMENT.

     Cash dividends declared and paid by the corporation upon the dissenting
shares after the date of approval of the reorganization by the outstanding
shares (Section 152) and prior to payment for the shares by the corporation
shall be credited against the total amount to be paid by the corporation
therefor. Leg.H. 1975 ch. 682, effective January 1, 1977.

SECTION 1308. CONTINUING RIGHTS AND PRIVILEGES OF DISSENTING SHAREHOLDERS.

     Except as expressly limited in this chapter, holders of dissenting shares
continue to have all the rights and privileges incident to their shares, until
the fair market value of their shares is agreed upon or determined. A
dissenting shareholder may not withdraw a demand for payment unless the
corporation consents thereto. Leg.H. 1975 ch. 682, effective January 1, 1977.


                                       5
<PAGE>   519
SECTION 1309. TERMINATION OF DISSENTING SHAREHOLDER STATUS.

     Dissenting shares lose their status as dissenting shares and the holders
thereof cease to be dissenting shareholders and cease to be entitled to require
the corporation to purchase their shares upon the happening of any of the
following:

     (a) The corporation abandons the reorganization. Upon abandonment of the
reorganization, the corporation shall pay on demand to any dissenting
shareholder who has initiated proceedings in good faith under this chapter all
necessary expenses incurred in such proceedings and reasonable attorneys' fees.

     (b) The shares are transferred prior to their submission for endorsement
in accordance with Section 1302 or are surrendered for conversion into shares
of another class in accordance with the articles.

     (c) The dissenting shareholder and the corporation do not agree upon the
status of the shares as dissenting shares or upon the purchase price of the
shares, and neither files a complaint or intervenes in a pending  action as
provided in Section 1304, within six months after the date on which notice of
the approval by the outstanding shares or notice pursuant to subdivision (i) of
Section 1110 was mailed to the shareholder.

     (d) The dissenting shareholder, with the consent of the corporation,
withdraws the shareholder's demand for purchase of the dissenting shares.
Leg.H. 1975 ch. 682, effective January 1, 1977.

SECTION 1310. SUSPENSION OF PROCEEDINGS FOR PAYMENT PENDING LITIGATION.

     If litigation is instituted to test the sufficiency or regularity of the
votes of the shareholders in authorizing a reorganization, any proceedings
under Section 1304 and 1305 shall be suspended until final determination of
such litigation. Leg.H. 1975 ch. 682, effective January 1, 1977.

SECTION 1311. EXEMPT SHARES.

     This chapter, except Section 1312, does not apply to classes of shares
whose terms and provisions specifically set forth the amount to be paid in
respect to such shares in the event of a reorganization or merger. Leg.H. 1975
ch. 682, effective January 1, 1977, 1988 ch. 919.

SECTION 1312. ATTACKING VALIDITY OF REORGANIZATION OR MERGER.

     (a) No shareholder of a corporation who has a right under this chapter to
demand payment of cash for the shares held by the shareholder shall have any
right at law or in equity to attack the validity of the reorganization or
short-form merger, or to have the reorganization or short-form merger set aside
or rescinded, except in an action to test whether the number of shares required
to

                                       6
<PAGE>   520
authorize or approve the reorganization have been legally voted in favor
thereof; but any holder of shares of a class whose terms and provisions
specifically set forth the amount to be paid in respect to them in the event of
a reorganization or short-form merger is entitled to payment in accordance
with those terms and provisions or, if the principal terms of the
reorganization are approved pursuant to subdivision (b) of Section 1202, is
entitled to payment in accordance with the terms and provisions of the approved
reorganization.

     (b) If one of the parties to a reorganization or short-form merger is
directly or indirectly controlled by, or under common control with, another
party to the reorganization or short-form merger, subdivision (a) shall not
apply to any shareholder of such party who has not demanded payment of cash for
such shareholder's shares pursuant to this chapter; but if the shareholder
institutes any action to attack the validity of the reorganization or
short-form merger or to have the reorganization or short-form merger set aside
or rescinded, the shareholder shall not thereafter have any right to demand
payment of cash for the shareholder's shares pursuant to this chapter. The
court in any action attacking the validity of the reorganization or short-form
merger or to have the reorganization or short-form merger set aside or
rescinded shall not restrain or enjoin the consummation of the transaction
except upon 10 days' prior notice to the corporation and upon a determination
by the court that clearly no other remedy will adequately protect the
complaining shareholder or the class of shareholders of which such shareholder
is a member.

     (c) If one of the parties to a reorganization or short-form merger is
directly or indirectly controlled by, or under common control with, another
party to the reorganization or short-form merger, in any action to attack the
validity of the reorganization or short-form merger or to have the
reorganization or short-form merger set aside or rescinded, (1) a party to a
reorganization or short-form merger which controls another party to the
reorganization or short-form merger shall have the burden of proving that the
transaction is just and reasonable as to the shareholders of the controlled
party, and (2) a person who controls two or more parties to a reorganization
shall have the burden of proving that the transaction is just and reasonable as
to the shareholders of any party so controlled. Leg.H. 1975 ch. 682, 1976 ch.
641, effective January 1, 1977, 1988 ch. 919.

                                       7
<PAGE>   521

                                     PROXY

                             WESTERN SIERRA BANCORP
   
THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS. The undersigned
hereby appoints Robert G. Albrecht, Richard L. Golemon and Joseph A. Surra and
each of them as proxyholders with full power of substitution, to represent, vote
and act with respect to all shares of common stock of Western Sierra Bancorp
which the undersigned would be entitled to vote at the Special Meeting of
Shareholders to be held on Tuesday, March 23, 1999 at 6:30 p.m., at Western
Sierra National Bank's principal office located at 4011 Plaza Goldorado Circle,
Cameron Park, California or any adjournments thereof, with all the powers the
undersigned would possess if personally present as follows:

1.       Approval of the principal terms of the Agreement and Plan of
         Reorganization and Merger by and among Western Sierra, LMC Merger
         Company and Lake Community Bank dated May 27, 1998, as amended on
         December 24, 1998, and the transactions contemplated thereby (the
         "Western Sierra/Lake Community agreement") providing for the merger of
         Lake Community with LMC Merger Company, and the exchange of .6905
         shares of Western Sierra common stock for each share of Lake Community
         common stock as further described in the accompanying joint proxy
         statement/prospectus and in the Western Sierra/Lake Community agreement
         which is included as Exhibit I to the joint proxy statement/prospectus.

             [ ]   FOR            [ ]   AGAINST                  [ ]   ABSTAIN

2.       Approval of the principal terms of the Agreement and Plan of
         Reorganization and Merger by and among Western Sierra and Roseville 1st
         Community Bancorp dated July 2, 1998, as amended on December 24, 1998,
         and the transactions contemplated thereby (the "Western
         Sierra/Roseville agreement") providing for the merger of Roseville with
         Western Sierra, and the exchange of 1.2110 shares of Western Sierra
         common stock for each share of Roseville common stock as further
         described in the accompanying joint proxy statement/prospectus and in
         the Western Sierra/Roseville agreement which is included as Exhibit II
         to the joint proxy statement/prospectus.

             [ ]   FOR            [ ]   AGAINST                  [ ]   ABSTAIN
    

3.       Transaction of such other business as may properly come before the
         meeting and any adjournment or adjournments thereof.



<PAGE>   522



                           PLEASE SIGN AND DATE BELOW

THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" APPROVAL OF THE PROPOSALS. The
Proxy confers authority to vote and shall be voted in accordance with such
recommendation unless a contrary instruction is indicated, in which case, the
shares represented by the Proxy will be voted in accordance with such
instruction. IF NO INSTRUCTION IS SPECIFIED WITH RESPECT TO THE MATTERS TO BE
ACTED UPON, THE SHARES REPRESENTED BY THE PROXY WILL BE VOTED IN ACCORDANCE WITH
THE RECOMMENDATIONS OF MANAGEMENT. IF ANY OTHER BUSINESS IS PRESENTED AT THE
MEETING, THIS PROXY CONFERS AUTHORITY TO AND SHALL BE VOTED IN ACCORDANCE WITH
THE RECOMMENDATIONS OF MANAGEMENT.

(Please date this Proxy and sign your name exactly as it appears on your stock
certificate. Executors, administrators, trustees, etc., should give their full
title. If a corporation, please sign in full corporate name by the president or
other authorized officer. If a partnership, please sign in partnership name by
an authorized person. All joint owners should sign.)

       [ ] I DO        [ ] I DO NOT        EXPECT TO ATTEND THE MEETING.

                                       ---------------------------------------
                                                  (Number of Shares)

                                       ---------------------------------------
                                                (Please Print Your Name)

                                       ---------------------------------------
                                               (Please Print Your Name)

                                       ---------------------------------------
                                                        (Date)

                                       ---------------------------------------
                                              (Signature of Shareholder)

                                       ---------------------------------------
                                              (Signature of Shareholder)


   
THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS AND MAY BE REVOKED
PRIOR TO ITS EXERCISE BY FILING WITH THE SECRETARY OF WESTERN SIERRA AN
INSTRUMENT REVOKING THIS PROXY OR A DULY EXECUTED PROXY BEARING A LATER DATE, OR
BY ATTENDING THE MEETING AND VOTING IN PERSON.
    




<PAGE>   523
                               LAKE COMMUNITY BANK

   
                  PROXY FOR THE SPECIAL MEETING OF SHAREHOLDERS
                           TO BE HELD MARCH 22, 1999
    

           THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

   
      The undersigned holder of Lake Community Bank common stock acknowledges
receipt of a copy of the Notice of Special Meeting of Shareholders of Lake
Community, and the accompanying joint proxy statement/prospectus dated February
__, 1999, and revoking any Proxy heretofore given, hereby constitutes and
appoints Howard Van Lente and Donald L. Browning, M.D., and each of them, with
full power of substitution, as attorneys and proxies to appear and vote all of
the shares of Lake Community common stock standing in the name of the
undersigned which the undersigned could vote if personally present and acting at
the Special Meeting of Shareholders of Lake Community, to be held at Lake
Community's head office, 805 Eleventh Street, Lakeport, California, on Monday,
March 22, 1999 at 5:00 p.m. or at any adjournments thereof, upon the following
items as set forth in the Notice of Special Meeting and joint proxy
statement/prospectus and to vote according to their discretion on all other
matters which may be properly presented for action at the meeting or any
adjournments thereof

1. Adoption and approval of the Agreement and Plan of Reorganization and Merger
dated May 27, 1998, as amended on December 24, 1998, among Lake Community,
Western Sierra Bancorp and LMC Merger Company; the related Agreement to Merge to
be entered into among Lake Community, Western Sierra and LMC Merger Company
pursuant to which LMC Merger Company will be merged with and into Lake
Community, resulting in Lake Community becoming the wholly-owned subsidiary of
Western Sierra; and the transactions contemplated thereby.
    

      [ ] FOR                [ ]  AGAINST           [ ]   ABSTAIN

      In their discretion, the proxyholders are authorized to vote upon such
other business as may properly come before the meeting, including, but not
limited to, any adjournment thereof.

THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" PROPOSAL NO. 1. THE PROXY WHEN
PROPERLY EXECUTED WILL BE VOTED AS DIRECTED. IF NO DIRECTION IS MADE, IT WILL BE
VOTED "FOR" PROPOSAL NO. 1

<TABLE>
<CAPTION>
         SHAREHOLDER(S)                               NO. OF COMMON SHARES
         --------------                               --------------------
    <S>                                               <C>

    ------------------------------                    --------------------

    ------------------------------                    --------------------
</TABLE>

DATE:________________

Please date and sign exactly as your name(s) appears. When signing as attorney,
executor, administrator, trustee, or guardian, please give full title as such.
If more than one trustee, all should sign. All joint owners should sign. WHETHER
OR NOT YOU PLAN TO ATTEND THIS MEETING, PLEASE SIGN AND RETURN THIS PROXY AS
PROMPTLY AS POSSIBLE IN THE ENCLOSED POST-PAID ENVELOPE.

I/We do ____ or do not ____ expect to attend this meeting.

THIS PROXY IS SOLICITED BY, AND ON BEHALF OF, THE BOARD OF DIRECTORS AND MAY BE
REVOKED PRIOR TO ITS EXERCISE.
<PAGE>   524
                                      PROXY

                        ROSEVILLE 1ST COMMUNITY BANCORP

   
THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS. The undersigned
hereby appoints Thomas Manz and Richard C. Seeba and each of them as
proxyholders with full power of substitution, to represent, vote and act with
respect to all shares of common stock of Roseville 1st Community Bancorp which
the undersigned would be entitled to vote at the Special Meeting of Shareholders
to be held on Tuesday, March 23, 1999 at 4:00 p.m., at Roseville 1st National
Bank's principal office located at 1801 Douglas Boulevard, Roseville,
California, or any adjournments thereof, with all the powers the undersigned
would possess if personally present as follows:


1.    Approval of the principal terms of the Agreement and Plan of
      Reorganization and Merger by and among the Western Sierra Bancorp and
      Roseville dated July 2, 1998, as amended on December 24, 1998, and the
      transactions contemplated thereby (the "Western Sierra/Roseville
      agreement") providing for the merger of Roseville with Western Sierra, and
      the exchange of 1.2110 shares of Western Sierra common stock for each
      share of Roseville common stock as further described in the accompanying
      joint proxy statement/prospectus and in the Western Sierra/Roseville
      agreement which is included as Exhibit II to the joint proxy
      statement/prospectus.
    

      [ ] FOR                [ ]  AGAINST           [ ]   ABSTAIN

2.    Transaction of such other business as may properly come before the meeting
      and any adjournment or adjournments thereof.

<PAGE>   525
                           PLEASE SIGN AND DATE BELOW

   
THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR" APPROVAL OF THE WESTERN
SIERRA/ROSEVILLE AGREEMENT. The Proxy confers authority to vote and shall be
voted in accordance with such recommendation unless a contrary instruction is
indicated, in which case, the shares represented by the Proxy will be voted in
accordance with such instruction. IF NO INSTRUCTION IS SPECIFIED WITH RESPECT TO
THE MATTER TO BE ACTED UPON, THE SHARES REPRESENTED BY THE PROXY WILL BE VOTED
IN ACCORDANCE WITH THE RECOMMENDATIONS OF MANAGEMENT. IF ANY OTHER BUSINESS IS
PRESENTED AT THE MEETING, THIS PROXY CONFERS AUTHORITY TO AND SHALL BE VOTED IN
ACCORDANCE WITH THE RECOMMENDATIONS OF MANAGEMENT.
    

(Please date this Proxy and sign your name exactly as it appears on your stock
certificate. Executors, administrators, trustees, etc., should give their full
title. If a corporation, please sign in full corporate name by the president or
other authorized officer. If a partnership, please sign in partnership name by
an authorized person. All joint owners should sign.)

         [ ] I DO    [ ] I DO NOT     EXPECT TO ATTEND THE MEETING.

                                       -----------------------------------------
                                                   (Number of Shares)

                                       -----------------------------------------
                                                 (Please Print Your Name)

                                       -----------------------------------------
                                                 (Please Print Your Name)

                                       -----------------------------------------
                                                         (Date)

                                       -----------------------------------------
                                               (Signature of Shareholder)

                                       -----------------------------------------
                                               (Signature of Shareholder)


   
THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS AND MAY BE REVOKED
PRIOR TO ITS EXERCISE BY FILING WITH THE SECRETARY OF ROSEVILLE AN INSTRUMENT
REVOKING THIS PROXY OR A DULY EXECUTED PROXY BEARING A LATER DATE, OR BY
ATTENDING THE MEETING AND VOTING IN PERSON.
    
<PAGE>   526


                                     PART II

ITEM 20.  INDEMNIFICATION OF DIRECTORS AND OFFICERS

The Articles of Incorporation and Bylaws of Western Sierra Bancorp ("Bancorp")
provide for indemnification of agents including directors, officers and
employees to the maximum extent allowed by California law including the use of
an indemnity agreement. Bancorp's Articles further provide for the elimination
of director liability for monetary damages to the maximum extent allowed by
California law. The indemnification law of the State of California generally
allows indemnification in matters not involving the right of the corporation, to
an agent of the corporation if such person acted in good faith and in a manner
such person reasonably believed to be in the best interests of the corporation,
and in the case of a criminal matter, had no reasonable cause to believe the
conduct of such person was unlawful. California law, with respect to matters
involving the right of a corporation, allows indemnification of an agent of the
corporation, if such person acted in good faith, in a manner such person
believed to be in the best interests of the corporation and its shareholders;
provided that there shall be no indemnification for: (i) amounts paid in
settling or otherwise disposing of a pending action without court approval; (ii)
expenses incurred in defending a pending action which is settled or otherwise
disposed of without court approval; (iii) matters in which such person shall
have been adjudged to be liable to the corporation unless and only to the extent
that the court in which the proceeding is or was pending shall determine that
such person is entitled to be indemnified; or (iv) other matters specified in
the California General Corporation Law.

Bancorp's Bylaws provide that Bancorp shall to the maximum extent permitted by
law have the power to indemnify its directors, officers and employees. Bancorp's
Bylaws also provide that Bancorp shall have the power to purchase and maintain
insurance covering its directors, officers and employees against any liability
asserted against any of them and incurred by any of them, whether or not Bancorp
would have the power to indemnify them against such liability under the
provisions of applicable law or the provisions of Bancorp's Bylaws. Each of the
directors and executive officers of Bancorp's subsidiary, Western Sierra
National Bank, has an indemnification agreement with Western Sierra National
Bank that provides that Western Sierra National Bank shall indemnify such person
to the full extent authorized by the applicable provisions of California law,
subject to national banking law, and further provide advances to pay for any
expenses which would be subject to reimbursement.

ITEM 21.  EXHIBITS

<TABLE>

<S>     <C>
 2.1    Agreement and Plan of Reorganization and Merger by and between the
        Bancorp and Lake dated as of May 27, 1998 as amended by Amendment No. 1
        attached as Exhibit I to the joint proxy statement/prospectus contained
        in Part I of this Registration Statement.

 2.2    Agreement and Plan of Reorganization and Merger by and between the
        Bancorp and Rose dated as of July 2, 1998 as amended by Amendment No. 1
        attached as Exhibit II to the joint proxy statement/prospectus contained
        in Part I of this Registration Statement.

*3.1    Articles of Incorporation of Registrant.

*3.2    Bylaws as amended of Registrant.

*5.1    Opinion re: legality.
</TABLE>

- ---------------

* Filed with the original Registration Statement.

   
    

<PAGE>   527
ITEM 21.  EXHIBITS (CONTINUED)

   
<TABLE>
<S>     <C>
 *8.1   Opinion re: tax matters as to the merger of Lake Community Bank with a
        subsidiary of Registrant by Perry-Smith & Co., LLP.

 *8.2   Opinion re: tax matters as to the merger of Roseville 1st Community
        Bancorp with Registrant by Perry-Smith & Co., LLP.

  8.3   Draft revised opinion re: pooling of interests accounting treatment of 
        the merger of Lake Community Bank with a subsidiary of Registrant by
        Perry-Smith & Co., LLP.

  8.4   Draft revised opinion re: pooling of interests accounting treatment of
        the merger of Roseville 1st Community Bancorp with Registrant by 
        Perry-Smith & Co., LLP.

*10.1   Placerville branch lease dated June 23, 1987 as amended.

*10.2   Severance benefits agreement for Gary Gall.

*10.3   Severance benefits agreement for Stephanie Marsh

*10.4   Salary continuation agreement for Gary Gall as amended.

*10.5   Stock option agreement dated April 11, 1995 for Gary Gall.

*10.6   Stock option agreement dated November 14, 1996 for Gary Gall.

*10.7   Stock option agreement dated May 20, 1997 for Gary Gall.

*10.8   Stock option agreement dated November 14, 1996 for Stephanie Marsh.

*10.9   Stock option agreement dated July 15, 1997 for Stephanie Marsh.

*10.10  Western Sierra National Bank 1989 Stock Option Plan and form of
        incentive stock option and nonqualified stock option agreement.

*10.11  Western Sierra Bancorp 1997 Stock Option Plan and form of incentive
        stock option agreement and nonqualified stock option agreement.

*10.12  Western Sierra National Bank Incentive Compensation Plan for senior
        management.

*10.13  Indemnification agreement for Gary Gall.

*10.14  Indemnification agreement for Stephanie Marsh.

*10.15  Indemnification agreement form for directors of Western Sierra National
        Bank.
</TABLE>
    

- ---------------

* Filed with the original Registration Statement.

   
    
<PAGE>   528



ITEM 21.  EXHIBITS (CONTINUED)

   
<TABLE>
<S>     <C>
**10.16  Director-Shareholder's Agreement in the Western Sierra/Lake Community
         merger.

**10.17  Director-Shareholder's Agreement in the Western Sierra/Roseville 
         merger.

  11.    Statement re: computation of per share earnings is included in Note 1
         to the financial statements to the joint proxy statement/prospectus
         included in Part I of this Registration Statement.

  21.    Subsidiaries of Registrant are Western Sierra National Bank, a national
         banking association and LMC Merger Company, a California corporation.

 *23.1   Consent of Counsel is included with the opinion re: legality as Exhibit
         5 to this Registration Statement.

  23.2   Consent of Perry-Smith & Co., LLP as accountants for Registrant.

  23.3   Consent of Perry-Smith & Co., LLP as accountants for Lake Community
         Bank.

  23.4   Consent of Perry-Smith & Co., LLP as accountants for Roseville 1st
         Community Bancorp.

 *23.5   Consent of The Findley Group as financial advisor to Registrant.

 *23.6   Consent of The Banc Stock Group, Inc. as financial advisor to Lake
         Community Bank.

 *23.7   Consent of The Banc Stock Group, Inc. as financial advisor to Roseville
         1st Community Bancorp.

**23.8   Consent of The Findley Group as financial advisor to Registrant is
         included in the amended and restated fairness opinion dated May 27,
         1988 attached as Exhibit 99.1 to this Registration Statement.

**23.9   Consent of The Banc Stock Group, Inc. as financial advisor to Lake
         Community Bank is included in the amended and restated fairness opinion
         dated May 27, 1998 attached as Exhibit 99.2 to this Registration
         Statement.

**23.10  Consent of The Banc Stock Group, Inc. as financial advisor to Roseville
         1st Community Bancorp is included in the amended and restated fairness
         opinion dated August 26, 1998 attached as Exhibit 99.3 to this
         Registration Statement.

**23.11  Consent of The Findley Group as financial advisor to Registrant is
         included in the fairness opinion dated December 24, 1998 included as
         Exhibit III to the joint proxy statement/prospectus included in Part I
         of this Registration Statement.

**23.12  Consent of The Banc Stock Group, Inc. as financial advisor to Lake
         Community Bank is included in the fairness opinion dated December 24,
         1998 included as Exhibit IV to the joint proxy statement/prospectus
         included in Part I of this Registration Statement.
</TABLE>
    

- ---------------

*  Filed with the original Registration Statement.
   
** Filed with Pre-Effective Amendment No. 3 to the Registration Statement.
    

   
    

<PAGE>   529

   
<TABLE>
<S>     <C>
**23.13  Consent of The Banc Stock Group, Inc. as financial advisor to Roseville
         1st Community Bancorp is included in the fairness opinion dated 
         December 24, 1998 included as Exhibit V to the joint proxy 
         statement/prospectus included in Part I of this Registration Statement.

**99.1   Amended and Restated Opinion of The Findley Group dated May 27, 1998 as
         financial advisor to Registrant.

**99.2   Amended and Restated Opinion of The Banc Stock Group, Inc. dated May 
         27, 1998 as financial advisor to Lake Community Bank.

**99.3   Amended and Restated Opinion of The Banc Stock Group, Inc. dated August
         26, 1998 as financial advisor to Roseville 1st Community Bancorp.
</TABLE>
    

b)      Financial Statement Schedules

               None.

c)      OPINIONS

        Opinion of The Findley Group as financial advisor to Registrant dated
        December 24, 1998 (included as Exhibit III in the joint proxy
        statement/prospectus in Part I herein).

        Opinion of The Banc Stock Group, Inc. as financial advisor to Lake
        Community Bank dated December 24, 1998 (included as Exhibit IV in the
        joint proxy statement/prospectus in Part I herein).

        Opinion of The Banc Stock Group, Inc. as financial advisor to Roseville
        1st Community Bancorp dated December 24, 1998 (included as Exhibit V in
        the joint proxy statement/prospectus in Part I herein).

ITEM 28.  UNDERTAKINGS

The undersigned Registrant hereby undertakes:

(1)     To file, during any period in which offers or sales are being made, a
        post-effective amendment to this Registration Statement:

        (i)     To include any prospectus required by Section 10(a)(3) of the
                Securities Act of 1933;

        (ii)    To reflect in the prospectus any facts or events arising after
                the effective date of the Registration Statement (or the most
                recent post-effective amendment thereof) which, individually or
                in the aggregate, represent a fundamental change in the
                information set forth in the Registration Statement;

        (iii)   To include any material information with respect to the plan of
                distribution not previously disclosed in the Registration
                Statement or any material change to such information in the
                Registration Statement;

- --------------
   
** Filed with Pre-Effective Amendment No. 3 to the Registration Statement.
    

   
    
<PAGE>   530
   
        provided, however, that paragraphs (1)(i) and (1)(ii) do not apply if
        the Registration Statement is on Form S-3 or Form S-8 and the
        information required to be included in a post-effective amendment by
        those paragraphs is contained in periodic reports filed by the
        Registrant pursuant to Section 13 or Section 15(d) of the Securities
        Exchange Act of 1934 that are incorporated by reference in the
        Registration Statement.
    

(2)     That, for the purpose of determining any liability under the Securities
        Act of 1933, each such post-effective amendment shall be deemed to be a
        new registration statement relating to the securities offered therein,
        and the offering of such securities at that time shall be deemed to be
        the initial bona fide offering thereof.

(3)     To remove from registration by means of a post-effective amendment any
        of the securities being registered which remain unsold at the
        termination of the offering.

The undersigned Registrant hereby undertakes as follows: that prior to any
public reoffering of the securities registered hereunder through use of a
prospectus with is part of the registration statement, by any person or party
who is deemed to be an underwriter within the meaning of Rule 145(c), the issuer
undertakes that such reoffering prospectus will contain the information called
for by the applicable registration form with respect to reofferings by persons
who may be deemed underwriters, in addition to the information called for by the
other items of the applicable form.

The Registrant undertakes that every prospectus: (i) that is filed pursuant to
paragraph (1) immediately preceding, or (ii) that purports to meet the
requirements of Section 10(a)(3) of the Act and is used in connection with an
offering of securities subject to Rule 415, will be filed as a part of an
amendment to the registration statement and will not be used until such
amendment is effective, and that, for purposes of determining any liability
under the Securities Act of 1933, each such post-effective amendment shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

Insofar as indemnification for liabilities arising under the Securities Act of
1933 may be permitted to directors, officers and controlling persons of the
Registrant pursuant to the foregoing provisions, or otherwise, the Registrant
has been advised that in the opinion of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Act and is,
therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the Registrant of expenses incurred
or paid by a director, officer or controlling person of the Registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the Registrant will, unless in the opinion of its counsel the matter
has been settled by controlling precedent, submit to a court of appropriate
jurisdiction the question whether such indemnification by it is against public
policy as expressed in the Securities Act and will be governed by the final
adjudication of such issue.

<PAGE>   531

                                   SIGNATURES

   
Pursuant to the requirements of the Securities Act of 1933, the Registrant has
duly caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized in the City of Cameron Park, California,
on February 16, 1999.
    

                                          WESTERN SIERRA BANCORP

                                          /s/ Gary D. Gall
                                          --------------------------------------
                                          Gary D. Gall, President & CEO

Pursuant to the requirements of the Securities Act of 1933, this Registration
Statement has been signed by the following persons in the capacities and on the
date indicated.


   
<TABLE>

<S>                              <C>                                     <C>
 /s/ Gary D. Gall                Director, Principal Executive           February 16, 1999
- -------------------------------  and Principal Financial Officer
Gary D. Gall



 /s/ Joseph A. Surra             Chairman                                February 16, 1999
- -------------------------------
Joseph A. Surra



 /s/ Robert G. Albrecht          Director                                February 16, 1999
- -------------------------------
Robert G. Albrecht



 /s/ Charles W. Bacchi           Director                                February 16, 1999
- -------------------------------
Charles W. Bacchi



 /s/ Barbara L. Cook             Director                                February 16, 1999
- -------------------------------
Barbara L. Cook



 /s/ William J. Fisher           Director                                February 16, 1999
- -------------------------------
William J. Fisher

</TABLE>
    






<PAGE>   532
   
<TABLE>





<S>                                 <C>                                 <C>
 /s/ Richard L. Golemon           , Director                            February 16, 1999
- ----------------------------------
Richard L. Golemon



 /s/ Harold S. Prescott, Jr.      , Director                            February 16, 1999
- ----------------------------------
Harold S. Prescott, Jr.



 /s/ Darol B. Rasmussen           , Director                            February 16, 1999
- ----------------------------------
Darol B. Rasmussen



 /s/ Osvaldo I. Scarriot          , Director                            February 16, 1999
- ----------------------------------
Osvaldo I. Scariot



 /s/ Lesa Fynes                   , Principal Accounting Officer        February 16, 1999
- ----------------------------------
Lesa Fynes

</TABLE>
    



<PAGE>   533



                                  EXHIBIT INDEX


   
<TABLE>
<CAPTION>

EXHIBIT NO.           DESCRIPTION
- -----------           -----------

<S>                   <C>
8.3     Draft opinion re: pooling of interests accounting treatment of the
        merger of Lake Community Bank with a subsidiary of Registrant by
        Perry-Smith & Co., LLP.

8.4     Draft opinion re: pooling of interests accounting treatment of the
        merger of Roseville 1st Community Bancorp with Registrant by Perry-Smith
        & Co., LLP.

23.2    Consent of Perry-Smith & Co., LLP as accountants for Registrant.

23.3    Consent of Perry-Smith & Co., LLP as accountants for Lake Community
        Bank.

23.4    Consent of Perry-Smith & Co., LLP as accountants for Roseville 1st
        Community Bancorp.

</TABLE>
    



<PAGE>   1

   
                                                                     EXHIBIT 8.3
    


                         INDEPENDENT ACCOUNTANT'S REPORT

Board of Directors
Western Sierra Bancorp
4011 Plaza Goldorado Circle
Cameron Park, California 95682

Board of Directors
Lake Community Bank
805 Eleventh Street
Lakeport, California 95453

     We have been furnished with a copy of the Agreement and Plan of Merger
between Western Sierra Bancorp (the "Company") and Lake Community Bank ("Target
Bank") dated May 27, 1998, (the "Merger Agreement"). The Merger Agreement states
that the merger is intended to be accounted for by the pooling-of-interests
method under the requirements of Accounting Principles Board (APB) Opinion No.
16, Business Combinations, and the related Interpretations of the American
Institute of Certified Public Accountants, consensuses of the FASB's Emerging
Issues Task Force, and rules and regulations of the U.S. Securities and Exchange
Commission (SEC) (collectively, "the interpretations thereof").

     At your request, we have read the Merger Agreement referred to above and
have had discussions with officials of the Company responsible for financial and
accounting matters as to the specific conditions that must be met for
pooling-of-interests accounting to be appropriate. We also have read the
representation letters addressed to us prepared by the Company and Target Bank
dated as of the date of this report that address the conditions that must be met
to account for a business combination as a pooling-of-interests in accordance
with APB Opinion No. 16 and the interpretations thereof.

     Based on discussions with officials responsible for financial and
accounting matters, and the information furnished to us as of the date of this
report, we concur with the Company's conclusion that, as of this date, no
conditions exist that would preclude the Company's accounting for the merger
with Target Bank as a pooling-of-interests. This concurrence with management's
conclusion is based on our belief that the criteria for such accounting
treatment specified by APB Opinion No. 16, and the interpretations thereof that
can be assessed at this time, have been met. We have not addressed the criteria
of APB Opinion No. 16 to any matters subsequent to the date of this report. As
of the date of this report, a merger between the Company and Target Bank has not
yet been consummated.
<PAGE>   2

                         INDEPENDENT ACCOUNTANT'S REPORT
                                   (Continued)

     All of the conditions to be met for pooling-of-interests accounting cannot
be finally assessed until after the passage of two years from the consummation
date of the merger, because certain of the conditions for pooling-of-interests
accounting address transactions occurring within such period of time. Management
of the Company has informed us that it will not agree to any actions that would
violate any of the required conditions.

     The ultimate responsibility for the decision on the appropriate application
of generally accepted accounting principles for an actual transaction rests with
the preparers of the financial statements. Our judgment on the appropriate
application of generally accepted accounting principles for the described
specific transaction is based solely on the facts, circumstances, and
assumptions provided to us as described above; should those facts, circumstances
or assumptions change, our conclusion may change. Our conclusion represents and
is based on our best judgment regarding the application of generally accepted
accounting principles and the published rules and regulations of the SEC
relative to matters of accounting for business combinations. Our conclusion is
not binding on the SEC or its staff, and there is no assurance that the SEC or
its staff will not successfully assert a contrary position.

   
     This letter is intended solely for the information and use of the
management and shareholders of the Company and Target Company and the respective
companies' legal counsel. It is not to be used for any other purpose, except as
an exhibit to the S-4 registration statement or in the Merger Agreement as a
condition precedent to the closing of the transaction.


                                        /s/ Perry-Smith & Co., LLP
                                        ----------------------------------------
                                        Perry-Smith & Co., LLP
                                        Certified Public Accountants

Sacramento, California
February 16, 1999
    

<PAGE>   1

   
                                                                     EXHIBIT 8.4
    

                        INDEPENDENT ACCOUNTANT'S REPORT

Board of Directors
Western Sierra Bancorp
4011 Plaza Goldorado Circle
Cameron Park, California 95682

Board of Directors
Roseville 1st Community Bancorp
1801 Douglas Boulevard
Roseville, California 95661

     We have been furnished with a copy of the Agreement and Plan of Merger
between Western Sierra Bancorp (the "Company") and Roseville 1st Community
Bancorp ("Target Company") dated July 2, 1998, (the "Merger Agreement"). The
Merger Agreement states that the merger is intended to be accounted for by the
pooling-of-interests method under the requirements of Accounting Principles
Board (APB) Opinion No. 16, Business Combinations, and the related
Interpretations of the American Institute of Certified Public Accountants,
consensuses of the FASB's Emerging Issues Task Force, and rules and regulations
of the U.S. Securities and Exchange Commission (SEC) (collectively, "the
interpretations thereof").

     At your request, we have read the Merger Agreement referred to above and
have had discussions with officials of the Company responsible for financial and
accounting matters as to the specific conditions that must be met for
pooling-of-interests accounting to be appropriate. We also have read the
representation letters addressed to us prepared by the Company and Target
Company dated as of the date of this report that address the conditions that
must be met to account for a business combination as a pooling-of-interests in
accordance with APB Opinion No. 16 and the interpretations thereof.

     Based on discussions with officials responsible for financial and
accounting matters, and the information furnished to us as of the date of this
report, we concur with the Company's conclusion that, as of this date, no
conditions exist that would preclude the Company's accounting for the merger
with Target Company as a pooling-of-interests. This concurrence with
management's conclusion is based on our belief that the criteria for such
accounting treatment specified by APB Opinion No. 16, and the interpretations
thereof that can be assessed at this time, have been met. We have not addressed
the criteria of APB Opinion No. 16 to any matters subsequent to the date of this
report. As of the date of this report, a merger between the Company and Target
Company has not yet been consummated.
<PAGE>   2

                         INDEPENDENT ACCOUNTANT'S REPORT
                                   (Continued)

     All of the conditions to be met for pooling-of-interests accounting cannot
be finally assessed until after the passage of two years from the consummation
date of the merger, because certain of the conditions for pooling-of-interests
accounting address transactions occurring within such period of time. Management
of the Company has informed us that it will not agree to any actions that would
violate any of the required conditions.

     The ultimate responsibility for the decision on the appropriate application
of generally accepted accounting principles for an actual transaction rests with
the preparers of the financial statements. Our judgment on the appropriate
application of generally accepted accounting principles for the described
specific transaction is based solely on the facts, circumstances, and
assumptions provided to us as described above; should those facts, circumstances
or assumptions change, our conclusion may change. Our conclusion represents and
is based on our best judgment regarding the application of generally accepted
accounting principles and the published rules and regulations of the SEC
relative to matters of accounting for business combinations. Our conclusion is
not binding on the SEC or its staff, and there is no assurance that the SEC or
its staff will not successfully assert a contrary position.

   
     This letter is intended solely for the information and use of the
management and shareholders of the Company and Target Bank and the respective
companies' legal counsel. It is not to be used for any other purpose, except as
an exhibit to the S-4 registration statement or in the Merger Agreement as a
condition precedent to the closing of the transaction.


                                        /s/ Perry-Smith & Co., LLP
                                        -----------------------------------
                                        Perry-Smith & Co., LLP
                                        Certified Public Accountants

Sacramento, California
February 16, 1999
    

<PAGE>   1

                                                                    EXHIBIT 23.2



               CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANT


        We hereby consent to the use in this Registration Statement on Form S-4
for Western Sierra Bancorp of our report dated February 6, 1998 relating to the
financial statements of Western Sierra Bancorp and Subsidiary for the years
ended December 31, 1997, 1996 and 1995, and to the reference to our Firm under
the caption "EXPERTS" in the Registration Statement.

                                                    /s/ Perry-Smith & Co., LLP


   
Sacramento, California
February 16, 1999
    

<PAGE>   1

                                                                    EXHIBIT 23.3

               CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANT


        We hereby consent to the use in this Registration Statement on Form S-4
for Western Sierra Bancorp of our report dated March 5, 1998 relating to the
financial statements of Lake Community Bank for the years ended December 31,
1997, 1996 and 1995, and to the reference to our Firm under the caption
"EXPERTS" in the Registration Statement.

                                                      /s/ Perry-Smith & Co., LLP


   
Sacramento, California
February 16, 1999
    

<PAGE>   1

                                                                    EXHIBIT 23.4

                      CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANT


        We hereby consent to the use in this Registration Statement on Form S-4
for Western Sierra Bancorp of our report dated March 20, 1998 relating to the
financial statements of Roseville 1st National Bank for the years ended December
31, 1997, 1996 and 1995, and to the reference to our Firm under the caption
"EXPERTS" in the Registration Statement.

                                                   /s/ Perry-Smith & Co., LLP


   
Sacramento, California
February 16, 1999
    


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