SIERRAWEST BANCORP
424B2, 1997-04-28
STATE COMMERCIAL BANKS
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                         Filed pursuant to Rule 424 (b)(2)
                            Registration No. 333-23841

                          LETTERHEAD OF MERCANTILE BANK



April 25, 1997

Dear Fellow Shareholder,



Pursuant to our Bank's pending acquisition by SierraWest Bancorp and merger with
and into its wholly owned subsidiary, SierraWest Bank, we have enclosed the 
following documents for your review:

     1.   Booklet containing the Notice of a Special Meeting of Shareholders, 
          the Prospectus of SierraWest Bancorp and the Proxy Statement of 
          Mercantile Bank together with financial information, a copy of the 
          Plan of Acquisition and Merger and related information.

     2.   A blue Proxy Form to be executed and returned in the enclosed green
          envelope.

     3.   SierraWest Bancorp's Form 10-K.

     4.   The 1996 Annual Report of SierraWest Bancorp.

     5.   The 1996 Annual Report of Mercantile Bank.

After you have reviewed the enclosed materials concerning the proposed Plan of
Acquisition and Merger, please indicate your vote on the blue Proxy Form and 
return it immediately in the green envelope.

Should you have any questions or comments, please feel free to call our Bank's
President, Michael Burkart, at your convenience.

Thank you for your attention given to this matter.  We shall look forward to
seeing you at the Special Meeting of Shareholders at 5:00 P.M. on May 27, 1997,
at the Bank's Main Office.

                              Sincerely,



                              /s/ Robert F. Gaines
                              Robert F. Gaines
                              Chairman of the Board



Enclosures
<PAGE>
                                   MERCANTILE BANK
                              Notice of Special Meeting
                                   of Shareholders   
                                    May 27, 1997
                                        5:00 P.M.

TO THE SHAREHOLDERS:

     A Special Meeting of Shareholders of Mercantile Bank, a California banking
corporation, will be held at the Bank's offices, 455 Capitol Mall, Sacramento,
California on May 27, 1997 at 5:00 P.M. for the following purposes:

     1.   To approve the Plan of Acquisition and Merger dated January 23, 1997, 
among Mercantile Bank ("Mercantile"), SierraWest Bancorp ("SierraWest"), and 
SierraWest's wholly-owned subsidiary SierraWest Bank (the "Bank") and the 
related Merger Agreement to be entered into by Mercantile and the Bank, pursuant
to which Mercantile would merge with and into the Bank; and

     2.   To act upon such other matters as may properly come before such
meeting or any adjournment thereof.

     Only shareholders of record at the close of business on April 17, 1997 are
entitled to notice of and to vote at this meeting and any adjournments thereof.

                              By Order of the Board of Directors,
                                   
                                   
                                   /S/ Denis R. Long
                                   Denis R. Long, Corporate Secretary
                    
Sacramento, California
April 22, 1997

         WHETHER OR NOT YOU PLAN TO ATTEND THIS MEETING, PLEASE
     SIGN AND RETURN THE ENCLOSED PROXY AS PROMPTLY AS POSSIBLE IN
                    THE ENCLOSED POST-PAID ENVELOPE.

<PAGE>
                              
- --------------------------------------------------------------------------------
     Prospectus of                                     Proxy Statement of
   SIERRAWEST BANCORP                                    MERCANTILE BANK
10181 Truckee-Tahoe Airport Road                         455 Capitol Mall
 Truckee, California 96160                         Sacramento, California 95814
     916-582-3000                                           916-442-6000
- --------------------------------------------------------------------------------

                  This  Proxy  Statement/Prospectus  is being  furnished  to the
shareholders   of  Mercantile  Bank   ("Mercantile")   in  connection  with  the
solicitation  of proxies by the Board of Directors of  Mercantile  to be used in
voting at the special  meeting of  shareholders of Mercantile to be held on May
27, 1997 (the "Mercantile Meeting").  This Proxy  Statement/Prospectus  is first
being mailed to holders of common stock of Mercantile on or about April 25,
1997.

                  The  Mercantile Meeting has been called to consider and vote
upon proposals:

                  1.  To  approve  the  Plan  of  Acquisition  and  Merger  (the
"Agreement")  dated  January 23,  1997,  among  Mercantile,  SierraWest  Bancorp
("SierraWest")  and  SierraWest's  wholly owned  subsidiary  SierraWest  Bank,
and the related Merger Agreement to be entered into by SierraWest  Bank and
Mercantile  (the "Merger  Agreement"), pursuant to which Mercantile would merge
with and into SierraWest Bank (the "Merger"); and

                 2.  To act upon such other matters as may properly come before
such meeting or any adjournment thereof.

                  This Proxy  Statement/Prospectus  covers a maximum of 250,000
shares of SierraWest common stock, which are to be issued to shareholders of
Mercantile  in exchange  for shares of  Mercantile  common  stock.  The specific
details of the Agreement are more fully  discussed  under the heading  "PROPOSAL
ONE: THE MERGER" in this Proxy Statement/Prospectus, and in the Agreement and in
the  Merger  Agreement  which  are set  forth in full in  Annex A to this  Proxy
Statement/Prospectus, which is incorporated herein by reference.

                  The  affirmative  vote of the  holders  of a  majority  of the
issued and outstanding shares of Mercantile common stock are required to approve
the Merger.

                  This   Proxy   Statement/Prospectus   also   constitutes   the
Prospectus of SierraWest under the Securities Act of 1933, as amended (the "1933
Act"),  for the public  offering of the shares of SierraWest  common stock to be
issued in  exchange  for  Mercantile  common  stock in the  Merger.  This  Proxy
Statement/Prospectus does not cover any resales of SierraWest common stock to be
received by the  shareholders of Mercantile or SierraWest in the Merger,  and no
person  is  authorized  to make any use of this  Proxy  Statement/Prospectus  in
connection with any such resale.

                  NEITHER THIS TRANSACTION NOR THE SECURITIES OF SIERRAWEST HAVE
BEEN APPROVED OR DISAPPROVED  BY THE  SECURITIES AND EXCHANGE  COMMISSION OR ANY
STATE  SECURITIES  COMMISSION NOR HAS THE SECURITIES AND EXCHANGE  COMMISSION OR
ANY STATE  SECURITIES  COMMISSION  PASSED UPON THE  ACCURACY OR ADEQUACY OF THIS
PROXY  STATEMENT/PROSPECTUS.  ANY  REPRESENTATION  TO THE CONTRARY IS A CRIMINAL
OFFENSE.

                  The date of this Proxy Statement/Prospectus is April 22, 1997.

                  No person is authorized to give any information or to make any
representation   with   respect  to  the   matters   described   in  this  Proxy
Statement/Prospectus  other  than  those  contained  herein or in the  documents
incorporated  by reference  herein.  Any  information  or  representations  with
respect to such matters not contained  herein or therein must not be relied upon
as having been  authorized by SierraWest or  Mercantile.  This Proxy  Statement/
Prospectus does not constitute an offer to sell or a solicitation of an offer to
buy any  securities  or the  solicitation  of a proxy  or an  offer to sell or a
solicitation  of an offer  to buy such  securities  in any  jurisdiction  to any
person  to whom it is  unlawful  to make  such  offer  or  solicitation  in such
jurisdiction.  Neither the delivery of this Proxy  Statement/Prospectus  nor any
distribution of securities hereunder shall, under any circumstances,  create any
implication  that  there has been no  change in the  affairs  of  SierraWest  or
Mercantile  since  the  date  hereof  or that  the  information  in  this  Proxy
Statement/Prospectus  or in the documents  incorporated  by reference  herein is
correct as of any time subsequent to the dates hereof or thereof.



                                   1
<PAGE>                             

                                     
AVAILABLE INFORMATION

                  SierraWest is subject to the informational requirements of the
Securities  Exchange  Act of 1934,  as  amended  (the  "Exchange  Act"),  and in
accordance therewith has filed reports and other information with the Securities
and Exchange Commission (the "Commission").  Such reports,  proxy statements and
other  information  filed by SierraWest with the Commission can be inspected and
copied at the Public  Reference Room of the  Commission,  450 Fifth Street,  NW,
Room 1024,  Washington,  DC 20549 and at the public reference  facilities of the
Chicago  Regional  Office,  Room 3190,  John C. Kluczynski  Building,  230 South
Dearborn Street,  Chicago,  Illinois 60604, and the New York Regional Office, 75
Park Place,  New York,  New York,  10007.  Copies of such  material  also can be
obtained from the Public Reference Section of the Commission,  450 Fifth Street,
NW Washington DC 20549 at prescribed rates.

                  The Commission  maintains a web site, which contains  reports,
proxy and information statements and other information pertaining to registrants
that file electronically with the Commission including  SierraWest.  The address
of this site is http://www.sec.gov.

                  SierraWest  has  filed  with  the  Commission  a  Registration
Statement on Form S-4 as amended (No. 333-23841)  under the 1933 Act relating to
the shares of SierraWest common stock to be issued in connection with the Merger
(the "Registration Statement"). This Proxy Statement/Prospectus also constitutes
the  Prospectus of SierraWest  filed as part of the  Registration  Statement and
does not contain all the information set forth in the Registration Statement and
Exhibits  thereto.  The  Registration  Statement and the Exhibits thereto may be
inspected and copied,  at prescribed  rates, at the public reference  facilities
maintained by the Commission at the addresses set forth above.

                  ALL INFORMATION  CONTAINED IN THIS PROXY STATEMENT/ PROSPECTUS
WITH RESPECT TO SIERRAWEST  AND ITS  SUBSIDIARY  HAS BEEN SUPPLIED BY SIERRAWEST
AND ALL INFORMATION CONTAINED IN THIS PROXY STATEMENT/PROSPECTUS WITH RESPECT TO
MERCANTILE HAS BEEN SUPPLIED BY MERCANTILE.


INFORMATION INCORPORATED BY REFERENCE

                  The following  documents  previously filed or to be filed with
the Commission pursuant to the Exchange Act are hereby incorporated by reference
in this Proxy Statement/Prospectus:

                  (a)      SierraWest's Annual Report on Form 10-K for the year
ended December 31, 1996 (the "SierraWest 10-K");

                  (b)      SierraWest's Current Report on Form 8-K filed with
the Commission on January 31, 1997; and

                  (c) All  documents  filed by  SierraWest  pursuant  to Section
         13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date of
         this Proxy  Statement/Prospectus  and prior to the date of the  Meeting
         shall be deemed to be incorporated by reference herein and to be a part
         hereof from the date of filing thereof.

                  THIS  PROXY  STATEMENT/PROSPECTUS  INCORPORATES  BY  REFERENCE
DOCUMENTS  RELATING TO SIERRAWEST  WHICH ARE NOT  PRESENTED  HEREIN OR DELIVERED
HEREWITH.  THESE DOCUMENTS  (OTHER THAN CERTAIN  EXHIBITS TO SUCH DOCUMENTS) ARE
AVAILABLE  WITHOUT  CHARGE  UPON  REQUEST  FROM  DAVID  C.  BROADLEY,  EVP/CHIEF
FINANCIAL  OFFICER,   SIERRAWEST  BANCORP,  10181  TRUCKEE-TAHOE  AIRPORT  ROAD,
TRUCKEE,  CALIFORNIA 96160,  TELEPHONE  916-582-3000.  IN ORDER TO ENSURE TIMELY
DELIVERY OF THE DOCUMENTS, ANY REQUEST SHOULD BE MADE BY MAY 12, 1997.



                                       2
<PAGE>
                  Any statement contained in a SierraWest document  incorporated
or deemed to be incorporated by reference  herein shall be deemed to be modified
or superseded for purposes of this Proxy Statement/Prospectus to the extent that
a statement  contained herein, or in any other  subsequently filed document that
also is or is  deemed  to be  incorporated  by  reference  herein,  modifies  or
supersedes  such statement.  Any such statement so modified or superseded  shall
not be deemed, except as so modified or superseded, to constitute a part of this
Proxy Statement/Prospectus.

                  THIS   PROXY   STATEMENT/PROSPECTUS   AND   DOCUMENTS   HEREIN
INCORPORATED  BY REFERENCE  INCLUDING,  BUT NOT LIMITED TO THE  SIERRAWEST  10-K
CONTAIN  CERTAIN  FORWARD-LOOKING  STATEMENTS  WITH  RESPECT  TO  THE  FINANCIAL
CONDITION,  RESULTS OF  OPERATIONS  AND  BUSINESS OF  SIERRAWEST  FOLLOWING  THE
CONSUMMATION OF THE MERGER, INCLUDING STATEMENTS RELATING TO THE EXPECTED IMPACT
OF THE MERGER ON SIERRAWEST'S FINANCIAL  PERFORMANCE AND THE MARKET VALUE OF
SIERRAWEST COMMON STOCK (SEE "INVESTMENT CONSIDERATIONS",  "SUMMARY",  "THE 
MERGER--REASONS FOR THE MERGER; RECOMMENDATIONS  OF THE  BOARD  OF  DIRECTORS"
"UNAUDITED  PRO  FORMA  COMBINED FINANCIAL  STATEMENTS" AND "MERCANTILE
MANAGEMENT'S  DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION  AND  RESULTS  OF
OPERATIONS   OF   MERCANTILE").   THESE FORWARD-LOOKING STATEMENTS INVOLVE
CERTAIN RISKS AND UNCERTAINTIES. FACTORS THAT MAY CAUSE ACTUAL RESULTS TO DIFFER
MATERIALLY  FROM THOSE  CONTEMPLATED BY SUCH FORWARD-LOOKING  STATEMENTS IN-
CLUDE, AMONG OTHERS, THE FOLLOWING  POSSIBILITIES: (1) EXPECTED COST SAVINGS
FROM THE MERGER CANNOT BE FULLY REALIZED;  (2) DEPOSIT ATTRITION,  CUSTOMER
LOSS OR REVENUE LOSS  FOLLOWING THE MERGER IS GREATER THAN EXPECTED; (3) COM-
PETITIVE PRESSURE IN THE BANKING INDUSTRY INCREASES SIGNIFICANTLY; (4) COSTS OR
DIFFICULTIES  RELATED  TO THE  INTEGRATION  OF THE BUSINESS OF SIERRAWEST AND
MERCANTILE ARE GREATER THAN EXPECTED; (5) CHANGES IN THE INTEREST RATE ENVIRON-
MENT REDUCE MARGINS;  (6) GENERAL ECONOMIC  CONDITIONS, EITHER NATIONALLY OR 
REGIONALLY, ARE LESS FAVORABLE THAN EXPECTED, RESULTING IN, AMONG OTHER THINGS,
A  DETERIORATION  IN CREDIT QUALITY; (7) CHANGES IN THE REGULATORY ENVIRONMENT;
(8) CHANGES IN BUSINESS CONDITIONS AND INFLATION; AND(9) CHANGES IN THE 
SECURITIES MARKETS.  THE  FORWARD-LOOKING STATEMENTS INCLUDED IN THIS PROXY  
STATEMENT/PROSPECTUS  HAVE NOT BEEN EXAMINED OR COMPILED BY THE INDEPENDENT 
PUBLIC ACCOUNTANTS OF SIERRAWEST OR MERCANTILE NOR HAVE SUCH ACCOUNTANTS APPLIED
ANY PROCEDURES THERETO. ACCORDINGLY, SUCH ACCOUNTANTS DO NOT EXPRESS AN OPINION
OR ANY OTHER FORM OF ASSURANCE ON THEM.  FURTHER  INFORMATION ON OTHER FACTORS 
WHICH COULD AFFECT THE  FINANCIAL  RESULTS OF SIERRAWEST  AFTER THE MERGER IS 
INCLUDED  IN THE  COMMISSION  FILINGS  INCORPORATED  BY  REFERENCE HEREIN.  
MOREOVER, WHENEVER PHRASES SUCH AS, OR SIMILAR TO, "IN  MANAGEMENT'S OPINION,"
"MANAGEMENT  BELIEVES," OR  "MANAGEMENT  CONSIDERS"  ARE USED, SUCH STATEMENTS  
ARE AS OF, AND BASED UPON THE KNOWLEDGE OF  MANAGEMENT,  AT THE TIME MADE AND 
ARE SUBJECT TO CHANGE BY THE PASSAGE OF TIME AND/OR SUBSEQUENT  EVENTS, AND 
ACCORDINGLY SUCH STATEMENTS ARE SUBJECT TO THE SAME RISKS AND  UNCERTAINTIES
NOTED ABOVE WITH RESPECT TO FORWARD-LOOKING STATEMENTS.





                                      3
<PAGE>

<TABLE>
                               TABLE OF CONTENTS
                                                                                               PAGE

<S>                                                                                            <C>    

AVAILABLE INFORMATION...........................................................................2

INFORMATION INCORPORATED BY REFERENCE...........................................................2

SUMMARY.........................................................................................4
The Parties to the Merger.......................................................................4
Date, Time and Place of Meeting.................................................................4
Purpose of the Meeting..........................................................................4
Persons Entitled to Vote........................................................................5
Vote Required...................................................................................5
Principal Terms of the Merger; Exchange Amount..................................................5
Cash/Stock Election.............................................................................6
Conditions and Regulatory Approvals.............................................................6
Termination and Amendment; Termination Payment..................................................6
Expenses........................................................................................7
Certain Federal Income Tax Consequences.........................................................7
Effective Date of the Merger....................................................................7
Recommendations of the Board of Directors.......................................................7
Fairness Opinion................................................................................8
Dissenters' Rights of Appraisal.................................................................8
Differences in Charter Documents and Applicable Law.............................................8
Interests of Certain Persons in the Merger......................................................8
Market Price Data...............................................................................9
Dividend Policy.................................................................................9
Selected Financial Information.................................................................10
Recent Developments............................................................................13

INVESTMENT CONSIDERATIONS......................................................................14
Concentration of Lending Activities............................................................14
Reliance on SBA Loan Sales.....................................................................14
Prepayment Risk................................................................................14
Environmental Liabilities......................................................................15
Growth Strategy................................................................................15
Potential Adverse Climatic and Economic Conditions.............................................15
Impact of New Accounting Pronouncement on Regulatory Capital...................................15
Mercantile-Regulatory Agreement................................................................16

SPECIAL MEETING OF THE SHAREHOLDERS OF MERCANTILE..............................................17
INTRODUCTION...................................................................................17
VOTING AND PROXIES.............................................................................17
     Date, Time and Place of Meeting...........................................................17
     Record Date and Voting Rights.............................................................17
     Voting by Proxy...........................................................................17
     Adjournments..............................................................................17
     Solicitation of Proxies...................................................................18
PROPOSAL ONE: THE MERGER.......................................................................19
Background.....................................................................................19
Reasons for the Merger and Recommendation......................................................19
Fairness Opinion...............................................................................20
     General...................................................................................20
     Analysis of Selected Merger Transactions..................................................21
     Contribution Analysis.....................................................................21
Interests of Certain Persons in the Merger.....................................................22

</TABLE>
                                       i
<PAGE>

<TABLE>
                               TABLE OF CONTENTS
                                  (Continued)
                                                                                               PAGE 
<S>                                                                                            <C>
Principal Terms of the Merger..................................................................22
     General...................................................................................22
     Effective Date of the Merger..............................................................22
     Exchange Amount...........................................................................22
     Adjustments to the Exchange Amount........................................................25
     Cash/Stock Election.......................................................................25
     Rights of Holders After Effective Date; Dividends.........................................26
     Exchange of Mercantile Stock Certificates; Fractional Interests...........................26
     Personnel Matters.........................................................................26
     Conduct of Business Prior to Merger.......................................................27
     Representations and Warranties............................................................28
     Conditions to the Merger..................................................................28
     Required Regulatory Approvals.............................................................28
     Dissenters' Rights of Appraisal...........................................................29
     Non-Solicitation Covenants................................................................30
     Certain Federal Income Tax Consequences...................................................30
     Accounting Treatment......................................................................31
     Termination and Amendment; Termination Payment............................................31
     Expenses..................................................................................32
     Resales of SierraWest Common Stock........................................................32
     Conduct of Business of SierraWest and Mercantile Following the Merger.....................32

UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS..............................................34

INFORMATION ABOUT SIERRAWEST...................................................................38

INFORMATION ABOUT MERCANTILE...................................................................39

SELECTED FINANCIAL DATA........................................................................48

MERCANTILE MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS OF MERCANTILE............................................................50

DESCRIPTION OF SIERRAWEST CAPITAL STOCK........................................................57

DESCRIPTION OF MERCANTILE CAPITAL STOCK........................................................58

CERTAIN DIFFERENCES IN RIGHTS OF SHAREHOLDERS..................................................58

MARKET PRICE AND DIVIDEND INFORMATION..........................................................61

EXPERTS........................................................................................62

CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL
DISCLOSURE.....................................................................................62

LEGAL MATTERS..................................................................................63

OTHER MATTERS..................................................................................63

MERCANTILE BANK Financial Statements December 31, 1996 and 1995 (With Auditors' Report Thereon)

MERCANTILE BANK Financial Statements December 31, 1995 and 1994 (With Auditors' Report Thereon)

</TABLE>
                                       ii
<PAGE>


                              TABLE OF CONTENTS
                                 (Continued)


ANNEX A   Plan of Acquisition and Merger dated January 23, 1997

ANNEX B   Fairness Opinion of Carpenter & Company

ANNEX C   Excerpts of Chapter 13 of the California Corporations Code regarding
          Dissenters Rights

                                   iii
<PAGE>                             

                                    SUMMARY

                  Certain matters discussed or incorporated by reference in this
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 "INVESTMENT
CONSIDERATIONS", "SUMMARY", "PROPOSAL ONE: THE MERGER - Reasons for the Merger
and Recommendation; Principal Terms of the Merger - Exchange Amount", "UNAUDITED
PRO FORMA COMBINED FINANCIAL STATEMENTS" and "MERCANTILE  MANAGEMENT'S DISCUS-
SION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS  OF  MERCAN-
TILE". Therefore, the information set forth therein should be carefully con-
sidered when evaluating the business prospects of SierraWest and Mercantile.



                  The  following is a summary of certain  information  contained
elsewhere  in this Proxy  Statement/Prospectus.  This summary does not contain a
complete  statement of all  material  features of the Merger and is qualified in
its entirety by  reference  to the full text of this Proxy  Statement/Prospectus
and the Annexes  hereto.  Mercantile  shareholders  are urged to read this Proxy
Statement/Prospectus and the accompanying Annexes in their entirety.

The Parties to the Merger

                  SierraWest  is a corporation  organized  under the laws of the
State of California.  It is registered as a bank holding  company under the Bank
Holding  Company  Act of 1956  (the  "BHC  Act").  SierraWest  owns one  banking
subsidiary,  SierraWest Bank (the "Bank" or  "subsidiary"),  a California  state
banking  corporation.  SierraWest's  former Nevada banking subsidiary was merged
with and into the Bank on October 1, 1996. At December 31, 1996,  SierraWest had
consolidated assets of approximately $ 447.9 million and shareholders' equity of
approximately  $33.9  million.  SierraWest's  principal  office  is  located  in
Truckee,  California.  The  Bank has  eleven  banking  offices  and  eight  loan
production offices in California and Nevada.

                  Mercantile  is a state  banking  corporation  licensed  by the
California  State Banking  Department as a commercial  bank. It was incorporated
under  the laws of the  State of  California  in 1975  and is  headquartered  in
Sacramento,   California.  Mercantile  conducts  a  general  commercial  banking
business through its single office. At December 31, 1996,  Mercantile had assets
of approximately  $46.4 million and shareholders'  equity of approximately  $4.9
million.

                  The Bank and  Mercantile  have their  deposits  insured by the
Federal Deposit Insurance Corporation ("FDIC") up to applicable limits.

                  If the Merger had been  consummated  on December 31, 1996, the
combined  companies  would  have  had,  on  a  pro  forma  basis  after  certain
adjustments,  total  assets  of  $492.7  million  and  shareholders'  equity  of
approximately $37.2 million. Combined net income for the year ended December 31,
1996 would have been approximately $3.5 million.


Date, Time and Place of the Meeting

                  The  Mercantile  Meeting will be held on May 27, 1997 at 5:00
p.m.  local  time  at  Mercantile's  office  at 455  Capitol  Mall,  Sacramento,
California.


Purpose of the Meeting

                  At the Mercantile Meeting, the shareholders of Mercantile will
be asked to (1) consider and vote upon the Agreement  and the Merger  Agreement;
and (2) consider and vote upon such other  business as may properly  come before
the Mercantile Meeting, including any adjournment or postponement thereof.

                  THE  BOARD  OF  DIRECTORS  OF   MERCANTILE   RECOMMENDS   THAT
SHAREHOLDERS VOTE THEIR SHARES OF MERCANTILE COMMON STOCK IN FAVOR OF THE MERGER
PROPOSAL.

                                       4
<PAGE>

Persons Entitled to Vote
                       
                  Mercantile has fixed the close of business on April 17, 1997,
as the record date for determining persons entitled to notice of and to vote at
the Mercantile Meeting. At the close of business on April 17, 1997, there were
outstanding and entitled to vote 336,980 shares of Mercantile common stock.
See "VOTING AND PROXIES."


Vote Required

                  Under the Agreement and applicable law, approval of the Merger
by an affirmative vote of the holders of a majority of the outstanding shares of
Mercantile common stock is a condition to completion of the Merger.  See "VOTING
AND PROXIES--Record Date and Voting Rights."

                  As a group, executive officers and directors of Mercantile and
the affiliates of such officers and directors beneficially owned 188,565 shares,
or  approximately  56%, of Mercantile  common stock outstanding as of April 17,
1997.  Holders of  approximately  56% of the  outstanding  shares of  Mercantile
common stock,  including all of the directors,  have agreed to vote their shares
in favor of the  Merger.  Accordingly,  no  additional  shares are  required  to
approve the transaction.  No executive  officer or director of Mercantile or any
affiliate  of any such  officer  or  director  beneficially  owned any shares of
SierraWest common stock as of such date.


Principal Terms of the Merger; Exchange Amount

                  The Merger will become  effective on the date (the  "Effective
Date") that the Merger  Agreement  is filed with the  Secretary  of State of the
State  of  California   and  the   California   Superintendent   of  Banks  (the
"Superintendent").  Assuming all  conditions  to the Merger are met, the parties
anticipate that the Effective Date will be on or about June 30, 1997, or as soon
thereafter as  practicable.  Upon  completion of the Merger,  Mercantile will be
merged with the Bank.  The Bank will be the surviving  corporation in the Merger
and will continue to operate as a wholly owned subsidiary of SierraWest.

                  On the Effective  Date, the  outstanding  shares of Mercantile
common stock will be converted  into the right to receive a combination  of cash
and shares of  SierraWest  common  stock (the  "Cash  Component"  and the "Stock
Component") with an aggregate value equal to the Exchange  Amount.  The Exchange
Amount will be $6,601,000 or approximately  $19.59 per share, subject to certain
adjustments.  The Exchange Amount will consist  one-half of cash and one-half of
SierraWest  common  stock,  subject  to  a  cash/stock  election  by  Mercantile
shareholders.  For purposes of  determining  the number of shares of  SierraWest
common  stock to be  issued,  such  stock  will be valued at the  average of the
closing  prices of the shares of  SierraWest  common  stock as  reported  in the
western  edition of the Wall Street  Journal for the 20 trading days ending five
business days before the  Effective  Date,  provided that the maximum  number of
shares of SierraWest common stock that will be issued is 250,000.

                  The Exchange  Amount will be reduced by 7.44% of the amount by
which  Mercantile's  average core  deposits for the 20 business  days ending the
month end before the Effective Date are less than $22.7  million.  Core deposits
include all deposits of Mercantile other than certificates of deposit;  brokered
deposits,  wholesale  deposits  and deposits of other  depository  institutions;
deposits maintained by the officers,  directors or shareholders of Mercantile or
their related  interests to the extent that such  deposits  exceed $1 million in
the  aggregate;  and deposits  opened or renewed after the date of the Agreement
for which the rate  exceeds  the rates  established  by  SierraWest  for similar
deposit products.  At March 31, 1997, Core Deposits were approximately  $24.1
million.  See "SUMMARY -- Recent Developments."


                  The Exchange Amount will also be increased or decreased by the
amount by which Mercantile's  Adjusted  Shareholders'  Equity is greater or less
than $4,912,000. Mercantile's Adjusted Shareholders' Equity is defined as actual
shareholders'  equity under generally accepted accounting  principles  ("GAAP"),
reduced by certain pro forma reserves and accruals to reflect  SierraWest's loan
grading  system,  any  prospective  inconsistencies  in  Mercantile's  method of
calculating  its allowance for loan losses and amount  necessary to increase the
valuation  reserve  reflected on Mercantile's  books to offset the effect of any
additional  carry-forward  tax losses  resulting from additions to  Mercantile's
allowance for loan losses or operating losses occurring after December 31, 1996.
At  March 31,  1997,  Mercantile's   shareholders'  equity  under  GAAP  was
$5,024,000.  See SUMMARY -- Recent Developments." No  assurance  can be given
that  actual  shareholders'  equity or Adjusted Shareholders' Equity will be 
higher or lower than this amount as of the Effective Date. All adjustments,
except for the valuation allowance adjustment, will be net of the related tax 
benefit or cost.


                                       5
<PAGE>

                  The Agreement  limits the Stock Component to 250,000 shares of
SierraWest  common stock.  If the Exchange  Amount remains at $6,601,000 and the
Stock Component  remains at $3,300,500,  the Exchange Amount will effectively be
reduced by any decrease in the average  stock price of  SierraWest  common stock
during the  measurement  period below  $13.20.  The last reported sale price for
SierraWest common stock on April 16, 1997 was $18.00 per share.


                  For a more complete description of the Exchange Amount, see
"PROPOSAL ONE: THE MERGER--Principal Terms of the Merger."

Cash/Stock Election

                  The Exchange  Amount will be allocated to the Stock  Component
and the Cash Component in accordance with an election procedure (the "Cash/Stock
Election").

                  Each  Mercantile  shareholder  may elect to receive his or her
portion of the Exchange  Amount in either all SierraWest  shares or all cash. If
no election is made,  the  shareholder  will  receive 50% of his or her Exchange
Amount in a Cash  Component  and 50% in a Stock  Component,  subject  to certain
adjustments  and  limitations.  The aggregate  Cash Component for all Mercantile
shareholders  must equal 50% of the Exchange Amount,  including cash used to pay
dissenters.  The  aggregate  Stock  Component may not exceed  250,000  shares of
SierraWest common stock. If the aggregate Cash Component is undersubscribed, the
unsubscribed  portion of this minimum aggregate Cash Component will be allocated
pro rata (by  number of  shares)  among all  Mercantile  shareholders  receiving
stock; if the aggregate Cash Component is oversubscribed,  the Cash Component of
each  Mercantile  shareholder  electing to receive cash will be reduced pro rata
(by  number of shares  electing  to  receive  cash) so that the  aggregate  Cash
Component of all  Mercantile  shareholders  (plus  amounts paid to  shareholders
exercising  dissenters'  rights) will equal  one-half of the Exchange  Amount or
$3,300,500, as adjusted. The total of the Cash Component and the Stock Component
will always equal the Exchange  Amount,  subject to the  limitation on the total
number of shares of SierraWest common stock to be issued as part of the Exchange
Amount.

                  After  the  Effective  Date,  SierraWest  will  send  to  each
Mercantile  shareholder  a  letter  of  transmittal  describing  the  Cash/Stock
Election in more detail and providing forms for making the Cash/Stock  Election.
The Cash/Stock  Election,  if made, must be made for all shares held in the name
of the Mercantile shareholder.  A Mercantile shareholder who holds shares in two
or more capacities or in different names may make a separate Cash/Stock Election
for each name or capacity in which shares are held.

                  Mercantile shareholders who make a Cash/Stock Election have no
assurance  that  they  will  receive  all  cash  or all  stock  or any  specific
proportion thereof.

                  There are certain differences in the rights of holders of
Mercantile common stock and the rights of holders of SierraWest common stock.
See "CERTAIN DIFFERENCES IN RIGHTS OF SHAREHOLDERS."

Conditions and Regulatory Approvals

                  Consummation  of the Merger is subject to the  satisfaction of
various conditions,  including the accuracy of each party's  representations and
warranties,  each party's substantial  compliance with its obligations under the
Agreement,  the  absence  of any  material  adverse  change  (as  defined in the
Agreement) in the business or financial  condition of SierraWest or  Mercantile,
receipt of required  regulatory  approvals  from the FDIC and  California  State
Banking Department (the "Department"), the effectiveness of SierraWest's Regis-
tration  Statement, receipt of a legal or accounting  opinion as to the qualifi-
cation of the Merger as a tax-free  reorganization with respect to the Stock 
Component,  the exchange of current unaudited financial information, Mercan-
tile's receipt of a fairness opinion from its financial  advisor and the adjust-
ment (if necessary) of certain of  Mercantile's  reserves and asset classifica-
tions  to conform to  specified standards.  See  "PROPOSAL  ONE:  THE  MERGER--
Representations  and  Warranties; Conditions to the Merger." Except as to any
condition the satisfaction of which is required by law, the Boards of Directors 
of SierraWest  and  Mercantile  have the corporate  power and authority to waive
satisfaction  of the  conditions to their respective company's obligation to 
consummate the Merger.


Termination and Amendment; Termination Payment

                  The  Agreements  may  be  terminated  any  time  prior  to the
Effective Date as follows: (a) by the mutual consent of the respective Boards of
Directors;  (b) by the Board of  Directors  of  SierraWest  on or after June 30,

                                       6
<PAGE>
1997, if any of the conditions to the  obligations  of SierraWest  have not been
fulfilled  or  waived,   any  material  adverse  change  in  Mercantile  or  its
properties,  operations or financial condition occurs or is learned,  Mercantile
materially fails to comply with its obligations under the Agreement,  Mercantile
enters into a transaction or series of transactions with a third person or group
providing  for the  acquisition  of all or a  substantial  part  of  Mercantile,
whether by way of  merger,  exchange  or  purchase  of stock,  sale of assets or
otherwise;  (c) by the Board of  Directors  of  Mercantile  on or after June 30,
1997, if any of the conditions to the obligations of Mercantile are subject have
not been  fulfilled or waived by Mercantile  (subject to  SierraWest's  right to
pursue certain litigation or administrative proceedings to obtain one or more of
the  required  regulatory  approvals,  but not beyond  December 31,  1997),  any
material adverse change in SierraWest or its properties, operations or financial
condition occurs or is learned,  SierraWest  materially fails to comply with its
obligations  under the  Agreement,  SierraWest  or its  affiliates  enter into a
business combination with any other entity which does not expressly  contemplate
the  performance  by  SierraWest  or its  successor in interest of  SierraWest's
obligations under the Agreement and SierraWest  indicates it will not consummate
the Agreement.

                  If either party  willfully  breaches  the  Agreement or enters
into another transaction (such as a merger or similar business combination) that
prevents performance of its obligations under the Agreement, the other party may
terminate the Agreement and becomes entitled to liquidated  damages of $350,000.
In addition,  each party remains  liable for its other  expenses as set forth in
Section 10 of the Agreement.

Expenses

                  Each  party  will  pay  the  costs  incurred  incident  to the
performance of its obligations  under the Agreement,  including costs related to
the Registration Statement and these Proxy Materials, their respective financial
statements and the fees of its counsel,  accountants,  consultants and financial
advisors.  Mercantile will pay or accrue up to $10,000 toward the printing costs
of the  Registration  Statement  and  the  Proxy  Materials  and  the  costs  of
distributing  the  Proxy  Materials  and  other  information  relating  to these
transactions to shareholders of Mercantile.  All fees payable  pursuant to state
"blue-sky" securities laws, fees related to obtaining a tax opinion, and the fee
required  to be paid to the  Commission  to  register  the shares of  SierraWest
common stock will be shared equally by the parties.

Certain Federal Income Tax Consequences

                  As a condition to the  consummation of the Merger,  SierraWest
and  Mercantile  have received an opinion from the law firm McCutchen, Doyle,
Brown & Enersen LLP, to the effect that the Merger will  constitute  a tax-free
reorganization for federal and California state income  tax  purposes as to the
Stock  Component  of  the  Exchange  Amount. Consequently,  it is the intent of 
the parties that Mercantile  shareholders who receive  SierraWest  common stock 
pursuant to the Merger will not recognize gain or loss for federal  income tax 
purposes  with  respect to the Stock  Component. Gain or  loss  will,  however,
be  recognized  on the  receipt  by  holders  of Mercantile  common  stock  of  
cash  as  payment  pursuant  to the  exercise of dissenters' rights and may be 
recognized  on the receipt of the Cash  Component and cash in lieu of fractional
shares of SierraWest common stock. The character and  amount of such gain or 
loss may vary  with  each shareholder's individual circumstances. Mercantile's  
shareholders  are urged to  consult  their own tax advisors  regarding the 
federal (and any  applicable foreign, state and local) income tax consequences
of the Merger. However, the opinion will be based on the assumption  that the 
value of the Stock Component will be equal to at least 50% of the Exchange
Amount.  This assumption will not be correct if the market value of SierraWest
common stock is less than $13.20. See "PROPOSAL ONE: THE  MERGER-- Certain  
Federal Income Tax Consequences."


Effective Date of the Merger

                  The Merger will become  effective on the date (the  "Effective
Date") that the Merger  Agreement  is filed with the  Secretary  of State of the
State of  California  and the  Superintendent.  Assuming all  conditions  to the
Merger are met, the parties  anticipate  that the  Effective  Date will be on or
before June 30, 1997, or as soon thereafter as practicable.


Recommendations of the Board of Directors

                  The Board of Directors of Mercantile  believes that the Merger
is in the best interests of Mercantile and its shareholders. The Board is of the
opinion that combining the business of SierraWest  and  Mercantile  will enhance
the  prospects of  Mercantile.  The Board of Directors  of  Mercantile  voted to
recommend to its  shareholders a vote FOR approval of the Merger.  See "PROPOSAL
ONE: THE MERGER--Reasons for the Merger and Recommendations."

                                      7
<PAGE>
Fairness Opinion

                  Mercantile  has retained  Carpenter & Company as its financial
advisor in  connection  with the Merger and to render an opinion to the Board of
Directors of Mercantile as to whether the Exchange Amount and the Exchange Ratio
in the  proposed  Merger  are  fair  from  a  financial  point  of  view  to the
shareholders  of Mercantile.  Carpenter & Company  delivered its opinion to this
effect on January 23, 1997. See "PROPOSAL ONE: THE MERGER Fairness  Opinion" and
Annex B.

Dissenters' Rights of Appraisal

                  If the Merger is  consummated,  shareholders of Mercantile who
follow  certain  statutory   procedures  may  demand  dissenters'  rights  under
California law. A shareholder's vote against approval of the Merger alone is not
sufficient  to  preserve  a  dissenting  shareholder's  right  to  receive  such
dissenters' rights. A dissenting shareholder must affirmatively complete certain
procedures  including giving notice to Mercantile  within certain statutory time
frames in order to preserve the dissenter's  rights of appraisal.  See "PROPOSAL
ONE: THE  MERGER--Dissenters'  Rights of Appraisal"  and Annex C which set forth
the relevant sections of the California General Corporation Law.

Differences in Charter Documents and Applicable Law

                  SierraWest and Mercantile are both organized under the
corporate law of California.  Mercantile is also subject to the California
Banking Law.  While there are many similarities between the laws governing the
rights of shareholders, there are certain differences in the charter documents
and law applicable to the two companies.  See "CERTAIN DIFFERENCES IN RIGHTS OF
SHAREHOLDERS."

Interests of Certain Persons in the Merger

                  Directors  of  Mercantile   hold  a   substantial   number  of
Mercantile  shares  and  will  benefit  to the  same  extent  as all  Mercantile
shareholders  from the  conversion  of Mercantile  shares to SierraWest  shares.
Michael Burkart,  president of Mercantile,  has a contract with Mercantile under
which he is  entitled,  upon  completion  of the  Merger,  to certain  incentive
compensation based on the value paid to Mercantile shareholders. If the Exchange
Amount is at least $6,293,000,  his incentive  compensation will be $50,000.  He
will receive an additional  $25,000 for each  increment of $484,000 by which the
Exchange Amount exceeds $6,293,000.  See "PROPOSAL ONE: THE MERGER--Interests of
Certain Persons in the Merger."

                  The Agreement provides that Mercantile employee Denis Long 
will be eligible for employment by SierraWest provided that he and SierraWest
have agreed to the terms of employment on or before the Determination Date;
provided, in the event that he has not reached agreement with SierraWest by such
date, Mercantile will have no obligation to terminate Denis Long prior to the
Effective Date.  To resolve any questions as to the rights to the parties under
the agreement and their respective relationships with Denis Long, Mercantile and
SierraWest, with the consent of Denis Long, have entered into a letter agreement
which provides: (1) As of the Effective Date, the employment of Denis Long shall
be terminated and he shall have no further rights under the terms of any employ-
ment contracts that may exist between Denis Long and Mercantile; (2) In 
consideration of receipt of an enforeceable release from Denis Long, SierraWest
and Mercantile shall jointly make a payment to him equal to $85,000 (one year's
base salary) less applicable withholdings as full and final severance.  Each of
SierraWest and Mercantile shall bear one-half of the severance payment; and (3)
Following the Effective Date, SierraWest will have the right, but not the
obligation, to offer further employment to Denis Long on such terms as may be 
agreed.

                                       8
<PAGE>
                              
Market Price Data

                  SierraWest  common  stock is  quoted  on the  Nasdaq  National
Market.  Mercantile common stock is thinly traded in the over-the-counter market
and is not quoted on Nasdaq.

                  The  following  table sets forth  historical  per share market
values  for  SierraWest  common  stock  and  Mercantile  common  stock  and  the
equivalent pro forma market values (i) on January 23, 1997, the last trading day
prior to public  announcement  of the  Merger  and (ii) on April 16,  1997.  The
historical per share market values shown below for  SierraWest  common stock and
Mercantile  common stock  represent  the last sale prices on or before the dates
indicated;  such values for  SierraWest  may be higher or lower than the "Market
Value" of  SierraWest  common stock as such term is defined in the Agreement for
purposes of  determining  the Exchange  Amount.  The equivalent pro forma market
value per share of Mercantile common stock reflects an Exchange Amount of $19.59
per share,  assuming an average Cash  Component of $9.795 per share and a Market
Value  equivalent to the market price for  SierraWest  common stock shown in the
table.
<TABLE>


<S>                     <C>               <C>               <C>                              <C>    
                                                                                             Equivalent Pro Forma
                                 Market Price                                                Market Value

                        Historical          Historical
                        SierraWest        Mercantile(1)


January 23, 1997          $17.00              $ 8.25        Cash Component                     $   9.795

                                                            Stock Component                        9.795


                                                            Total                               $ 19.590





April 16, 1997            $18.00              $ 8.25        Cash Component                     $   9.795


                                                            Stock Component                        9.795
 

                                                            Total                               $ 19.590



</TABLE>

(1)      The historical market price for Mercantile's common stock is based on
information provided to management by various sources, but not verified by
Mercantile.  Mercantile has not been a party to such trades.  Mercantile is not
aware of any actual trades since January 23, 1997.

                  No assurance can be given that SierraWest's  Market Value will
not be lower or higher than the amounts  shown in the above table or that actual
stock prices for SierraWest's common stock will be equal to or greater than such
Market Value at any time after completion of the Merger.  Upon completion of the
Merger,  Mercantile  will be merged into the Bank,  and there will be no further
public market for Mercantile common stock. SierraWest common stock will continue
to be quoted on the Nasdaq National Market.

Dividend Policy

                  SierraWest's Board of Directors will consider the advisability
and amount of proposed  dividends each year. Future dividends will be determined
in light of SierraWest's  earnings,  financial condition,  future capital needs,
regulatory  requirements  and such other  factors as the Board of Directors  may
deem relevant.  SierraWest's primary source of funds for payment of dividends to
its  shareholders  will be the receipt of  dividends  from its  subsidiary.  The
payment of dividends by California  corporations is subject to various legal and
regulatory restrictions.


                                       9
<PAGE>
                                   
Selected Financial Information

                  The following tables present selected historical and unaudited
pro forma combined financial information,  including per share information,  for
SierraWest  and  Mercantile.  The  following  financial  data  should be read in
conjunction   with  the   consolidated   financial   statements   of  SierraWest
incorporated by reference in this Proxy  Statement/Prospectus  and the financial
statements  of  Mercantile  included  in this  Proxy  Statement/Prospectus,  the
unaudited pro forma combined financial  information of SierraWest and Mercantile
appearing  herein,  and  the  notes  to such  statements  and  information.  The
unaudited pro forma combined information presents selected financial information
based on the historical  financial  statements of the parties,  giving effect to
the  proposed  combination  under  the  purchase  method of  accounting  and the
assumptions  and  adjustments  in the notes  thereto.  The  unaudited  pro forma
combined financial statements do not necessarily indicate the results that would
have  occurred if the Merger had been in effect on the dates  indicated  or that
may occur in the future.  See "SUMMARY -- Recent Developments."

<TABLE>
                                     Summary of Selected Financial Information
                                      (in thousands, except per share amounts)

<S>                                                  <C>            <C>            <C>           <C>          <C>    
           At or for the Year Ended December 31,     1996            1995           1994          1993         1992
                                                     ----            ----           ----          ----         ----

SierraWest

Results of operations:

    Interest income                                   $33,269       $ 25,831       $19,657       $17,246      $16,597
    
    Interest expense                                   12,495          8,491         5,597         4,503        6,876
    
    Net interest income                                20,774         17,340        14,060        12,743        9,721
    
    Provision for loan losses                           1,010          1,270           885         1,560          915
    
    Noninterest income                                  7,338          7,969         9,177        10,214        9,406
    
    Noninterest expense                                21,697         20,944        17,486        17,023       15,616
    
    Net income                                          3,328          1,916         3,003         2,704        1,833
    

Balance sheet (end of period):

    Total assets                                     $447,889       $337,518      $259,975      $250,065     $243,758

    Net loans                                         318,820        236,124       169,393       156,347      152,603

    Deposits                                          399,651        293,154       218,876       220,768      211,976
                                                       
    Convertible debentures                              8,520         10,000        10,000           250          250

    Shareholders' equity                               33,916         29,833        28,163        25,645       22,907

Financial ratios:

    Tier 1 risk-based capital  (1)                      9.8%          11.6%         14.1%         13.8%        12.6%

    Total risk-based capital  (1)                      13.6           16.6          20.3          15.1         13.9

    Leverage ratio  (1)                                 7.9            9.1          11.0          10.5         10.1

    Allowance for loan
       losses/period end loans                          1.4            1.6           2.1           2.2          1.8

    Return on average assets                            0.9            0.7           1.2           1.2          0.8

    Return on average equity                           10.5            6.5          11.2          11.1          8.6

    Nonperforming assets to total                                                                           
      assets                                            1.3            1.8           1.4           1.6          2.0

    Dividend payout rate, primary                      25.2           33.3           0.0           0.0          0.0

    Dividend payout rate, fully diluted                29.7           36.4           0.0           0.0          0.0

</TABLE>

                                       10
<PAGE>
                                       
<TABLE>
                                          Selected Financial Information
                                      (in thousands, except per share amounts)


<S>                                                 <C>            <C>            <C>           <C>           <C>
          At or for the Year Ended December 31,       1996           1995           1994            1993         1992
                                                      ----           ----           ----            ----         ----

Per share:
                                                      
    Book value                                       $12.24        $ 11.51        $ 10.75       $   9.90      $  8.84

    Net income
                                                          
       Primary                                         1.19           0.72           1.12           1.04         0.73
                                                          
       Fully diluted                                   1.01           0.66           0.96           1.02         0.71
                                                                                                               
    Dividends declared                                 0.30           0.24              0              0            0

    Weighted average shares 
      outstanding primary                             2,802          2,678          2,678          2,609        2,503
      
    Weighted average shares                                                           
      outstanding, fully diluted                      3,747          3,687          3,606          2,657        2,642

Mercantile

Results of operations:

     Interest income                                 $4,047         $4,461        $ 3,687       $  3,379      $ 3,449
     Interest expense                                 1,689          2,017          1,436          1,320        1,685
     Net interest income                              2,358          2,444          2,251          2,059        1,764
     Provision for loan losses                          428            293            990            122           78
     Noninterest income                                 424            133            126            127          222
     Noninterest expense                              1,698          2,235          1,400          1,391        1,396
     Net income                                         358             23             11            453          361

Balance sheet (end of period):
     Total assets                                   $46,376        $52,265        $43,603       $ 44,819      $42,156
     
     Net loans                                       30,801         35,695         33,602         34,801       32,727
     Deposits                                        41,246         47,227         39,459         40,401       38,316
     Shareholders' equity                             4,931          4,151          4,026          4,133        3,659
     
Financial ratios
     Tier 1 risk-based capital                         13.9%           8.7%          11.6%          11.2%        11.3%
     Total risk-based capital                          15.1            7.8           12.8           12.5         12.5
     Leverage ratio                                    10.6            8.8            9.7            9.1          8.2
     Allowance for loan                                                                                           
        losses/period end loans                         3.4            2.5            3.0            1.6          1.5
     Return on average assets                           0.7            0.1            0.1            1.0          0.8
     Return on average equity                           7.6            0.6            0.3           11.6         10.4
     
     Nonperforming assets to total                                                                              
       assets                                           3.6            3.1            3.2            2.9          2.7 

     Dividend payout rate, primary (5)                  N/A            N/A            N/A            N/A          N/A
   
Per share:
    Book value                                       $14.64        $ 14.65        $ 14.20       $  14.58      $ 12.91
    
    Net income, primary                                1.15           0.08           0.04           1.60         1.28
    
    Weighted average shares                               
      outstanding, primary                              312            283            283            283          283   
</TABLE>

                                       11
<PAGE>
                                   
                                          Selected Financial Information
                                      (in thousands, except per share amounts)


SierraWest and Mercantile - unaudited
(pro forma combined)  (2), (3)                        1996
                                                      ----

Results of operations
                                                       
     Interest income                                   $37,146
                                                        
     Interest expense                                   14,184
                                                        
     Net interest income                                22,962
                                                         
     Provision for loan losses                           1,438
                                                         
     Noninterest income                                  7,762
                                                        
     Noninterest expense                                23,574
                                                         
     Net income                                          3,477

Balance sheet
                                                      
     Total assets                                     $492,654
                                                       
     Net loans                                         349,621
                                                          
     Deposits                                          440,897
                                                         
     Other borrowed funds                                8,520
                                                        
     Shareholders' equity                               37,236

Per share:
    Book value                                          $12.64
    
    Net income
       Primary                                            1.17
       Fully diluted                                      0.89
    Dividends declared                                    0.30
    Weighted average shares
       outstanding, primary                              2,976
    Weighted average shares
       outstanding, fully diluted                        3,921
      

Mercantile - unaudited (pro forma equivalent
per share) (4)

Net income
       Primary                                           $0.60
       Fully diluted                                      0.46
       
Dividends declared (5)                                    0.00
       Book value                                         6.52


                                      Notes to Selected Financial Information

(1)  SierraWest, as a registered bank holding company, is regulated by the
     Federal Reserve Board ("FRB").  In computing the capital level required for
     bank holding companies, the FRB follows GAAP in the computation of the
     components of the capital ratios.  SierraWest's subsidiary bank is
     regulated by the FDIC, which does not in all respects follow 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 the
     subsidiary bank.  Because of the above difference in accounting principles,
     the capital adequacy of SierraWest as a whole and its subsidiary bank 
     varies significantly.

(2)  The unaudited pro forma combined per share data for net income have been 
     calculated using SierraWest's average number of common shares outstanding
     for the period presented increased by 173,711 SierraWest shares to be 
     issued to Mercantile shareholders using an Exchange Amount of $6,601,000,
     a Cash Component of $3,300,500, and an Exchange Ratio for the Stock
     Component of 0.515492 SierraWest shares (assuming a SierraWest Market Value
     of $19.00 per share) for each Mercantile share outstanding at December 31,
     1996, as if these shares were outstanding for the period presented.  The
     unaudited pro forma combined per share data has been calculated by using
     SierraWest's common shares outstanding increased by the SierraWest shares

                                       12
<PAGE>
     to be issued to Mercantile shareholders using an Exchange Ratio of 0.515492
     SierraWest shares for each Mercantile share outstanding at December 31,
     1996, as if these shares were outstanding for the period presented.  Such
     unaudited pro forma per share data assumes no dissenting Mercantile share-
     holders and no exercise of outstanding SierraWest stock options.

(3)  The unaudited pro forma combined  information  reflects the purchase method
     of  accounting.  Intangibles,  which  are  estimated  to be  $1,789,000  at
     December 31, 1996,  are  allocated  between  core deposit  intangibles  and
     goodwill.  For income statement  purposes,  the core deposit  intangible is
     being amortized on a straight-line basis over a 7-year life and goodwill is
     being amortized on a straight-line basis over a 15-year life.

(4)  Mercantile  pro forma  equivalent per share data is based on SierraWest and
     Mercantile  unaudited pro forma  combined per share data  multiplied by the
     Exchange Ratio of 0.515492.  Such data assumes a per share Stock  Component
     equal to 50% of the per share  Exchange  Amount  and does not  reflect  the
     benefit of the per share Cash Component.

(5)   No dividends were declared by Mercantile in the years 1992 through 1996.

Recent Developments

     During the first quarter of 1997, SierraWest engaged Sheshunoff Management
Services, Inc. ("Sheshunoff") to assist it in identifying opportunities to 
reduce SierraWest's operating expenses and to recommend more efficient methods
of operation.  The cost of the consulting arrangement with Sheshunoff is
expected to be approximately $600 thousand, most of which will be incurred in
the second quarter of 1997.  Sheshunoff's fees will be reduced on a sliding
scale if total identified savings do not exceed $1.5 million on an annualized
basis. Expenses associated with the planned restructuring, which are not 
expected to exceed $500 thousand, should primarily be absorbed in the second
quarter of 1997.

     The SBA announced that effective May 5, 1997, it would limit the size of 
loans made under its 7(a) program to $500 thousand.  This change is subject to
review by Congress which has a 15 day comment period.  The change is not
expected to have a significant impact on SierraWest earnings for 1997.

     For the first quarter of 1997, SierraWest had net income of $1.2 million,
or $.32 per share on a fully diluted basis.  Total assets, loans, deposits and
shareholders' equity at March 31, 1997, were $474.0 million, $347.8 million,
$423.6 million and $39.9 million, respectively.  Net interest margin declined 
from 6.3% for the first quarter of 1996 to 5.9% for the first quarter because of
an increase in the cost of interest bearing transaction deposits.  Net loan 
chargeoffs for the quarter were $230 thousand, or 0.2% of loans outstanding and 
nonperforming assets, as a percentage of total assets, were 1.2% at March 31.  
The allowance for loan losses stood at 1.4% of loans outstanding at March 31,
1997.

     Mercantile earnings for the first quarter of 1997 were $114 thousand, or
$.34 per share, after expenses of $129 thousand attendant to the Merger.  Total 
assets, loans, deposits and shareholders' equity were $47.4 million, $30.8
million, $41.9 million and $5.0 million, respectively.  Net interest margin
declined from 5.3% for the first quarter of 1996 to 4.9% for the first quarter
of 1997 because of a decrease in the level of interest earning assets and an 
increase in the cost of interest bearing deposits.  There were no loan charge-
offs for the quarter and nonperforming assets, as a percentage of total assets,
were 3.0% at March 31.  The allowance for loan losses stood at 3.5% of loans 
outstanding at March 31, 1997.                          

     
                                       13
<PAGE>
                               INVESTMENT CONSIDERATIONS

                  Certain matters discussed or incorporated by reference in this
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 "INVESTMENT
CONSIDERATIONS", "SUMMARY", "PROPOSAL ONE: THE MERGER - Reasons for the Merger 
and Recommendation; Principal Terms of the Merger -- Exchange Amount", 
"UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS" and "MERCANTILE MANAGEMENT'S
DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS  OF  
MERCANTILE".  Therefore, the information set forth therein should be carefully 
considered when evaluating the business prospects of SierraWest and Mercantile.


Concentration of Lending Activities

                  At December 31, 1996,  approximately 73% of SierraWest's loans
were secured by real estate.  At such date,  approximately  41% of  SierraWest's
loans  consisting of loans generated  through  SierraWest's  United States Small
Business  Administration  (the "SBA") loan  program,  were secured by commercial
real estate,  including small office  buildings,  owner-user  office/warehouses,
mixed-use  residential/commercial  properties and retail property. Approximately
25% of such loans are additionally  guaranteed by the SBA.  Approximately 18% of
the properties  which secure  SierraWest's  loans are located in Nevada with the
remainder  of the  properties  being  located  in  California.  The  ability  of
SierraWest 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,  increasing interest rates, or by acts of nature (including earthquakes,
which may cause  uninsured  damage and other loss of value to real  estate  that
secures  SierraWest's  loans).  Due to the  concentration  of SierraWest's  real
estate  collateral,  such events could have a significant  adverse impact on the
value of such collateral or SierraWest's earnings.

Reliance on SBA Loan Sales

                  In  recent  years,  a  substantial   portion  of  SierraWest's
revenues  and income have been  derived  from SBA loan  activities.  Many of the
terms and  conditions  of the SBA program are subject to political  and business
considerations that could significantly influence SierraWest's future efforts in
this area.  Although  the SBA  program has been in effect  since 1954,  over the
years a number of proposals to eliminate, consolidate or otherwise alter the SBA
program  have  been  considered  in both  the  Executive  Branch  and  Congress.
Consequently,  future  income from this program  will depend  upon,  among other
things,  the  continuation  and  funding  of the  SBA  program  by  the  Federal
government at or near present levels. In recent years, the budgeted governmental
funding  for the SBA  program  has not met  increasing  program  demands and has
required  supplemental  appropriations  of  funds by the  Congress.  There is no
assurance that future levels of government  funding will be adequate to fund the
SBA program at current levels.

                  The SBA loan program  includes  certain  risks not  associated
with traditional bank lending programs,  including, but not limited to, possible
loss of the SBA  guarantee  on  individual  loans if a loan is found to  contain
deficiencies in documentation  or servicing which  contributed to a greater loss
to the SBA than would  otherwise be incurred,  additional  risk  associated with
those SBA loans with terms  longer than  non-SBA  loans made by most banks,  and
loan-to-value  ratios  higher than those  normally  utilized by  SierraWest  for
non-SBA loans.

Prepayment Risk

                  A significant portion of SierraWest's  reported income relates
to excess  servicing on SBA loans sold in the past. The related Excess Servicing
asset included in SierraWest's  Consolidated Financial Statements represents the
recognition of the present value of the Excess Servicing spread, which was based
on certain  estimates  made by management at the time SBA loans were sold.  Such
estimates  were made based on  management's  expectations  of future  prepayment
rates and other  considerations.  If actual prepayments with respect to sold SBA
loans occur more  quickly  than was  projected at the time such loans were sold,
the  carrying  value of the Excess  Servicing  asset may have to be written down
through a charge to earnings in the period of adjustment.


                                       14
<PAGE>
                                    
Environmental Liabilities

                  In the course of its business,  SierraWest  has acquired,  and
may in the future acquire, through foreclosure, properties securing loans it has
originated  or  purchased  which  are in  default.  Primarily  with  respect  to
commercial  properties  securing SBA loans and commercial real estate loans made
outside  the  SBA  guaranteed  loan  program,  there  is a risk  that  hazardous
substances or wastes,  contaminants  or  pollutants  could be discovered on such
properties after acquisition by SierraWest.  In such event,  SierraWest might be
required to remove such substances from the affected properties at its sole cost
and expense.  There can be no assurance  that the cost of such removal would not
substantially  exceed the value of affected  properties  or the loans secured by
the properties,  that SierraWest would have adequate  remedies against the prior
owner  or  other  responsible  parties  or that  SierraWest  would  not  find it
difficult  or  impossible  to sell the  affected  properties  either prior to or
following any such removal.  See Note 8 to SierraWest's  Consolidated  Financial
Statements.

Growth Strategy

                  SierraWest intends to pursue a growth strategy focusing on its
SBA lending and  general  banking  activities.  This  strategy is  significantly
dependent upon SierraWest's ability to generate an increasingly larger volume of
deposits  and loans at  acceptable  risk  levels and on  acceptable  terms,  and
SierraWest  having sufficient  regulatory  capital to support internal growth or
the  acquisition of other  entities.  There can be no assurance that  SierraWest
will be successful  in  implementing  its strategy  through  internal  growth or
acquisitions.  There can be no assurance that  SierraWest  will be successful in
identifying appropriate acquisition targets and obtaining regulatory approval of
such acquisitions.  SierraWest's  ability to pursue its growth strategy also may
be adversely affected by general economic conditions.

Potential Adverse Climatic and Economic Conditions

                  A  significant  portion of  SierraWest's  banking  offices are
located in the Lake  Tahoe  area in the  mountains  of the  Sierra  Nevada.  The
economy of its service area is based in large part on tourism.  The service area
is also subject to extreme climatic conditions,  such as heavy snowfall and cold
temperatures.  These  conditions  occasionally  result in damage to major access
highways, closure of airports and other disruptions to tourism. Media reports of
such conditions may also cause potential visitors to the area to defer or cancel
plans to travel to the area, even though other means of access may be available.
Most recently,  in January 1997,  snow,  rainfall and mudslides caused extensive
damage to Highway 50, the primary  access road from San Francisco and Sacramento
to South  Lake  Tahoe.  Highway  50 was closed  for  approximately  four  weeks.
Customers in South Lake incurred  economic  losses  during this period;  however
SierraWest  is not  expected to suffer any  material  adverse  effect from those
losses.  No assurance  can be given that  similar  events in the future will not
have an adverse effect on SierraWest's financial condition or operations.


Impact of New Accounting Pronouncement on Regulatory Capital

                  In December 1996 the Federal Financial Institutions
Examination Council's ("FFIEC") Task Force on Supervision, acting under
delegated authority, approved revisions to the reporting requirements for the
Reports of Condition and Income ("Call Report") for 1997.  These revisions
included changes to provide for call reports to be submitted on a GAAP basis
versus special regulatory capital treatment of servicing assets.

                  Pursuant to the implementation of SFAS 125, effective January
1, 1997, SierraWest will report the asset formerly classified as "Excess
servicing on SBA loans" as two separate assets, either: (a.)"Contractual 
servicing on SBA loans sold"; or, (b.) "Interest only strip on SBA loans sold".
Under the interim guidance, the contractual servicing asset is considered an
intangible asset in the determination of regulatory capital requirements with
no deduction from capital.  Prior to December 31, 1996 the excess servicing
asset was deducted net of related taxes and certain discounts from capital.

                  These changes are not expected to have an adverse impact upon
the regulatory capital position of SierraWest.  However, in its pronouncement,
the FFIEC noted that it was unable to provide assurance regarding what the
capital treatment of such assets would be under any final capital rules on
servicing assets.  SierraWest cannot determine if the changes to current rules
or subsequent interpretations of current rules will result in an adverse impact
on its capital adequacy levels.

                                       15
<PAGE>

Mercantile - Regulatory Agreement

                  On August 16, 1995,  Mercantile  entered into a Memorandum  of
Understanding (the "Memorandum") with the FDIC and the Superintendent as a 
result of an examination of Mercantile by the FDIC. The Memorandum  required
that Mercantile take certain actions within specified  periods of time. These 
requirements  included,  among other things,  that  Mercantile  (a) revise and 
formalize various policies and procedures with respect to board and management
supervision, lending and funds management, and compliance with laws, rules and  
regulations; (b) review and maintain an adequate  allowance  for loan losses;
and (c) reduce the balance of classified assets to $2,500,000 and $2,000,000 by 
December 31, 1995 and June 30, 1996, respectively.

                  Subsequently,  on July 8, 1996,  this  original  Memorandum of
Understanding was terminated and replaced with a new Memorandum with the FDIC 
and  the  Superintendent,  which  requires Mercantile to, among other things:
(a) retain management  acceptable to the FDIC and the  Superintendent;  (b)  
maintain a Tier 1 capital ratio that equals or exceeds 7.5% of total assets; 
(c) eliminate all assets classified "Loss" and one-half of the assets classi-
fied "Doubtful"  within 10 days of the July 8, 1996 effective date; (d) reduce
the balance of assets  classified  "Substandard" to $4,200,000, $4,000,000, 
$3,000,000, and $2,000,000 by September 30, 1996, December 31, 1996, March  31,
1997,  and June 30,  1997,  respectively;  (e)  revise,  adopt,  and implement 
written lending and collection policies; (f) establish and maintain an adequate
Allowance for Loan Losses;  (g) adopt and  implement a written  profit plan;
(h) submit a revised  mid-range  strategic  plan;  (i) eliminate and/or correct 
all  violations  of law; (j) develop or revise,  adopt, and implement a written 
liquidity and funds management policy; and (k) make quarterly reports to the 
FDIC and the  Superintendent.  As a result of the Memorandum,  Mercantile is
subject to operating restrictions, including the payment of dividends.

                  As of September 30 and  December 31, 1996 and March 31, 1997
assets  classified "Substandard"  were  approximately  $3,848,000, $2,940,000,
and $2,632,000, respectively.  Management of Mercantile believes Mercantile is 
in substantial compliance with the terms and conditions of the Memorandum. How-
ever, no assurance can be given that Mercantile  will  meet or continue to be 
able to  meet  the  terms  and conditions of the Memorandum.  See "INFORMATION  
ABOUT  MERCANTILE - Regulatory Agreement."


                                       16
<PAGE>
                                   
                     SPECIAL MEETING OF SHAREHOLDERS OF MERCANTILE

INTRODUCTION

                  This Proxy  Statement/Prospectus  is furnished  in  connection
with the  solicitation  by the Board of Directors of Mercantile of proxies to be
voted at the Special  Meeting of  Shareholders of Mercantile (the "Meeting") and
any adjournments or postponements thereof. This Proxy Statement/ Prospectus also
serves as the Prospectus of SierraWest  with regard to the offering of shares of
SierraWest common stock to shareholders of Mercantile.

                  At the Meeting,  the  shareholders of Mercantile will be asked
to (1) consider and vote upon the  Agreement and the Merger  Agreement;  and (2)
consider  and vote upon such other  business  as may  properly  come  before the
Meeting, including any adjournment or postponement thereof.


VOTING AND PROXIES

Date, Time and Place of Meeting

                  The Meeting  will be held on May 27, 1997 at 5:00 p.m.  local
time at Mercantile's office at 455 Capitol Mall, Sacramento, California.


Record Date and Voting Rights

                  Only holders of record of Mercantile common stock at the close
of business on April 17, 1997 (the "Record  Date") are entitled to notice of and
to vote at the Meeting.  At the Mercantile Record Date, there were approximately
113 shareholders of record and 336,980 shares of  Mercantile  common  stock
outstanding and entitled to vote. Directors and executive officers of Mercantile
and their  affiliates  owned  beneficially as of the Record Date an aggregate of
188,565  shares  of  Mercantile  common  stock,  or  approximately  56%  of  the
outstanding  Mercantile  common  stock.  Holders  of  approximately  56%  of the
outstanding  shares of Mercantile common stock,  including all of the directors,
have  agreed  to vote  their  shares  in favor of the  Merger.  Accordingly,  no
additional shares are required to approve the transaction.

                  Each  Mercantile  shareholder is entitled to one vote for each
share of common  stock he or she owns.  Under  the  terms of the  Agreement  and
California law, approval of the Merger by the Mercantile  shareholders  requires
the affirmative  vote of the holders of a majority of the outstanding  shares of
Mercantile common stock.

Voting by Proxy

                  Shareholders  of Mercantile may use the enclosed proxy if they
are unable to attend the Meeting in person or wish to have their shares voted by
proxy even if they attend the Meeting.  All proxies  that are properly  executed
and returned,  unless  revoked,  will be voted at the Meeting in accordance with
the instructions indicated thereon or, if no direction is indicated, in favor of
the Merger.  The execution of a proxy will not affect the right of a shareholder
of Mercantile to attend the Meeting and vote in person. A person who has given a
proxy may revoke it any time  before it is  exercised  at the  Meeting by filing
with the  Secretary of  Mercantile  a written  notice of  revocation  or a proxy
bearing a later  date or by  attendance  at the  Meeting  and  voting in person.
Attendance at the Meeting will not, by itself, revoke a proxy.

Adjournments

                  The Meeting may be adjourned, even if a quorum is not present,
by the vote of the  holders  of a  majority  of the  shares  represented  at the
Meeting in person or by proxy.  In the  absence of a quorum at the  Meeting,  no
other business may be transacted at the Meeting.

                  Notice of the  adjournment of the Meeting need not be given if
the time and place thereof are announced at the Meeting at which the adjournment
is taken, provided that if the adjournment is for more than 45 days, or if after
the adjournment a new record date is fixed for the adjourned  Meeting,  a notice
of the adjourned  Meeting shall be given to each  shareholder of record entitled
to vote at the Meeting. At an adjourned Meeting,  any business may be transacted
which might have been transacted at the original Meeting.

                                       17
<PAGE>
                                      
Solicitation of Proxies

                  The  proxy  relating  to  the  Mercantile   Meeting  is  being
solicited by the Board of Directors of Mercantile. Mercantile will pay or accrue
up to $10,000  toward the printing costs of the  Registration  Statement and the
Proxy  Materials  and the costs of  distributing  the Proxy  Materials and other
information relating to these transactions to shareholders of Mercantile. Copies
of solicitation material will be furnished to brokerage houses,  fiduciaries and
custodians holding in their names shares of Mercantile common stock beneficially
owned by others to forward to such beneficial owners.

                  Mercantile may reimburse such persons representing  beneficial
owners of its shares for their expenses in forwarding  solicitation  material to
such beneficial  owners.  Solicitation of proxies by mail may be supplemented by
telephone,  telegram or personal  solicitation  by directors,  officers or other
regular  employees  of  Mercantile,  who  will not be  additionally  compensated
therefor.





                                       18
<PAGE>

                           PROPOSAL ONE: THE MERGER

                  Certain matters discussed or incorporated by reference in this
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 "INVESTMENT
CONSIDERATIONS", "SUMMARY", "PROPOSAL ONE: THE MERGER - Reasons for the Merger
and Recommendation; Principal Terms of the Merger - Exchange Amount", "UNAUDITED
PRO FORMA COMBINED FINANCIAL STATEMENTS" and "MERCANTILE MANAGEMENT'S DISCUSSION
AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS  OF  MERCANTILE".
Therefore,  the  information  set forth therein should be carefully considered 
when evaluating the business prospects of SierraWest and Mercantile.



Background

                  The terms of the  Agreement  are the  result  of  arm's-length
negotiations between representatives of SierraWest and Mercantile. The following
is a brief description of the events that led to the execution of the Agreement.
In August,  1996,  representatives of SierraWest and Mercantile held preliminary
discussions  regarding a potential  business  combination  of the two companies.
Negotiations  and  due  diligence   continued   through   November,   1996,  and
negotiations  and drafting of a definitive  agreement began on or about November
15, 1996.  During this time, the parties  discussed the appropriate level of the
allowance for loan losses for each company. They also considered  establishing a
fixed  Exchange  Amount  rather  than a  variable  Exchange  amount  that  might
fluctuate up until the Effective Date.  During that time the Boards of Directors
of  Mercantile  and  SierraWest  met  separately  several  times to consider the
Merger.  The  parties  executed  the  Agreement  as of  January  23,  1997.  The
Mercantile  Board of  Directors  approved  the Merger on January 23,  1997.  The
SierraWest  Board of Directors also approved the Merger in a separate meeting on
January 23, 1997.

Reasons for the Merger and Recommendation

                  Mercantile's  Board of Directors has concluded  that the terms
of the  Merger  are  fair  to,  and  in  the  best  interests  of,  Mercantile's
shareholders.  In  evaluating  the terms of the Merger,  the Board of  Directors
considered the cash and number of shares of SierraWest common stock to be issued
in exchange for each outstanding share of Mercantile common stock, the impact of
the  Merger  upon  their  depositors,   customers  and  employees,  the  overall
compatibility  of their office  structures,  the  long-term  prospects  for both
organizations in a rapidly changing banking and financial services industry, the
anticipated  ability of the combined  entity to compete more  effectively in its
market area and the tax-free  nature of the Merger with respect to the shares of
SierraWest  common  stock to be issued.  Mercantile's  Board of  Directors  also
considered the greater liquidity of SierraWest common stock.  Mercantile's Board
of Directors also reviewed,  among other things,  the method of calculating  the
Exchange  Amount and the Exchange  Ratio in relation to the market  value,  book
value and earnings per share of Mercantile  common stock and  SierraWest  common
stock, information concerning the financial condition, results of operations and
prospects of SierraWest and  Mercantile,  the benefits of economies of scale and
the financial  terms of other recent  business  combinations  in the  California
banking industry.

                  In addition,  the Board of Directors of Mercantile  considered
the  opinion  rendered  by  Carpenter & Company to the effect that the Merger is
fair to the Mercantile  shareholders  from a financial  point of view as further
described below.

                  In summary,  the Board of  Directors  of  Mercantile,  without
assigning any relative or specific weight to the factors  considered,  concluded
the following:  (i) the Exchange Amount represents a fair multiple of Mercantile
per share book value and historical and projected  earnings;  (ii) the Merger is
intended to be tax-free for Federal and California income tax purposes for the
shareholders of Mercantile  (other than the Cash  Component  and cash paid in 
lieu of fractional shares)  subject  to  certain  assumptions  (See  "Certain  
Federal  Income  Tax Consequences");  (iii)  SierraWest  shares have greater  
market liquidity than Mercantile shares; and (iv) the due diligence examination
of  SierraWest by Mercantile  representatives  indicated that SierraWest has 
strong management and capital.

                  The  Board of  Directors  of  SierraWest  determined  that the
Merger is in its best interests and the best interests of its  shareholders.  It
also  considered the method of determining  the Exchange Amount and the Exchange
Ratio in relation to its own capital and managerial  resources and prospects for
future operations.  Among the important factors it considered are the following:
(i) It has conducted a due diligence  examination of Mercantile  which indicates
that Mercantile is a well capitalized institution;  (ii) Mercantile will benefit
from the management expertise,  expanded menu of products and services and other

                                       19
<PAGE>
                                      
resources  available  through the holding company  structure,  thereby improving
Mercantile's ability to serve its customers, as well as increasing its potential
for  growth and  increased  earnings;  (iii) the  geographic  markets  served by
Mercantile complement the markets served by SierraWest Bank, and encompass areas
into which SierraWest Bank would like to expand its services;  (iv) the types of
lending activities engaged in and products offered by Mercantile  complement the
lending  activities  and  products  of  SierraWest  Bank;  (v)  the  ability  of
SierraWest  Bank and  Mercantile  to  cross-market  products and  services  will
benefit  consumers  by  increasing  competition  in the  markets  served by each
institution;  (vi) the  diversification  of SierraWest's  customer base and loan
portfolio  which will  result from the Merger  will help  diversify  risk in the
SierraWest organization.

Fairness Opinion

                  General.  Pursuant to an  engagement  letter dated  January 3,
1997 (the "Engagement  Letter"),  Mercantile engaged Seapower Carpenter Capital,
Inc. dba Carpenter & Company  ("Carpenter")  to provide a fairness  opinion with
respect to the transaction. Carpenter is an investment banking firm specializing
in California  financial  institutions,  and, as part of its investment  banking
activities,  is  regularly  engaged in the  valuation  of  businesses  and their
securities  in  connection   with  merger   transactions   and  other  types  of
acquisitions,  negotiated  underwritings,  private placements and valuations for
corporate  and other  purposes.  Mercantile  selected  Carpenter  to render  the
opinion on the basis of its experience and expertise in transactions  similar to
the Merger and its  reputation  in the banking and  investment  communities.  No
limitations  were  imposed  by  Mercantile  on  Carpenter  with  respect  to the
investigations made or procedures followed in rendering its opinion.

                  At a meeting  of the  Mercantile  Board on January  14,  1997,
Carpenter  delivered its oral opinion that the  consideration  to be received by
the holders of Mercantile  Common Stock  pursuant to the Merger was fair to such
shareholders  from a financial  point of view,  as of the date of such  opinion.
Carpenter's oral opinion was subsequently confirmed in writing as of such date.

                  The full text of Carpenter's written opinion to the Mercantile
Board,  dated January 23, 1997, which sets forth the assumptions  made,  matters
considered,  and limitations of the review, by Carpenter,  is attached hereto as
Annex C and is  incorporated  herein by  reference.  The  following  summary  of
Carpenter's  opinion is  qualified in its entirety by reference to the full text
of the  opinion,  which  should  be  read  carefully  and in  its  entirety.  In
furnishing  such  opinion,  Carpenter  does not admit that it is an expert  with
respect   to  the   Registration   Statement   of   which   this   Joint   Proxy
Statement/Prospectus is part within the meaning of the term "experts" as used in
the Securities Act and the rules and regulations promulgated thereunder nor does
it admit that its opinion  constitutes a report or valuation  within the meaning
of Section 11 of the  Securities  Act.  Carpenter's  opinion is  directed to the
Mercantile  Board,  covers only the fairness of the consideration to be received
by holders of Mercantile  Common Stock from a financial  point of view as of the
date of the opinion and does not  constitute a  recommendation  to any holder of
Mercantile Common Stock as to how such shareholder should vote at the Mercantile
Meeting.

                  In connection with its Opinion, Carpenter, among other things:
(i) reviewed certain publicly available financial and other data with respect to
Mercantile and SierraWest,  including the consolidated  financial statements for
recent years and interim periods to November 30, 1996 and certain other relevant
financial  and  operating  data  relating  to  Mercantile  and  SierraWest  made
available to Carpenter from published  sources and from the internal  records of
Mercantile,  (ii)  reviewed  the  Agreement;  (iii)  reviewed  certain  publicly
available  information  concerning  the trading of, and the trading  market for,
Mercantile Common Stock and SierraWest  Common Stock;  (iv) compared  Mercantile
and SierraWest  from a financial  point of view with certain other  companies in
the banking industry which Carpenter  deemed to be relevant;  (v) considered the
financial terms, to the extent publicly  available,  of selected recent business
combinations of companies in the banking  industry which Carpenter  deemed to be
comparable, in whole or in part, to the Merger; (vi) reviewed and discussed with
representatives  of  the  management  of  Mercantile  certain  information  of a
business and financial  nature regarding  Mercantile,  furnished to Carpenter by
them; (vii) made inquiries  regarding and discussed the Merger and the Agreement
and  other  matters  related  thereto  with  Mercantile's  counsel;  and  (viii)
performed such other analyses and examinations as Carpenter deemed appropriate.

                  In  connection  with its review,  Carpenter did not assume any
obligation  independently to verify the foregoing information and relied on such
information being accurate and complete in all material respects. Carpenter also
assumed  that there were no material  changes in  Mercantile's  or  SierraWest's
assets, financial condition, results of operations,  business or prospects since
the respective  dates of their last financial  statements  made available to it.
Carpenter relied on advice of counsel to Mercantile as to all legal matters with
respect to  Mercantile,  the Merger and the Agreement.  Mercantile  acknowledged
that Carpenter did not discuss with  Mercantile's  independent  accountants  any

                                       20
<PAGE>
financial  reporting  matters  with  respect  to  Mercantile,  the Merger or the
Agreement. Mercantile informed Carpenter, and Carpenter assumed, that the Merger
would  be  accounted  for as a  purchase  under  generally  accepted  accounting
principles.  Carpenter  assumed that the Merger would be consummated in a manner
that complies in all respects with the  applicable  provisions of the Securities
Act, the Exchange Act and all other applicable federal and state statutes, rules
and regulations.
                                     
                  Carpenter  assumed that the allowance for loan losses for each
of Mercantile and SierraWest are in the aggregate adequate to cover such losses.
In  addition,   Carpenter  did  not  assume  responsibility  for  reviewing  any
individual  credit  files,  or making an  independent  evaluation,  appraisal or
physical  inspection  of  any  of  the  assets  or  liabilities  (contingent  or
otherwise) of Mercantile or  SierraWest,  nor was Carpenter  furnished  with any
such appraisals.  Finally,  Carpenter's opinion was based on economic,  monetary
and  market and other  conditions  as in effect  on,  and the  information  made
available  to Carpenter  as of the date of the  opinion.  Accordingly,  although
subsequent  developments may affect Carpenter's  opinion, it has not assumed any
obligation to update, revise or reaffirm such opinion.

                  Set forth below is a brief summary of the report  presented by
Carpenter to the  Mercantile  Board on January 14, 1997 in  connection  with its
opinion.

                  Analysis of Selected Merger  Transactions.  Carpenter reviewed
the consideration paid in recently announced  transactions whereby certain banks
were  acquired.  Specifically,  Carpenter  reviewed 101  transactions  involving
acquisitions  of banks based in California  announced since January 1, 1992 (the
"California Bank Acquisitions"), and 48 acquisition of banks based in California
with total assets of less than $100 million since the same date (the "Small Bank
Acquisitions)".  Carpenter  further  analyzed 10  transactions in 1996 involving
California  banks under $100  million (the "1996 Small Bank  Acquisitions).  For
each bank acquired or to be acquired in such  transactions,  Carpenter  analyzed
data illustrating,  among other things, the ratio of the premium (i.e., purchase
price in excess of tangible  book  value) to core  deposits,  purchase  price to
tangible book value and purchase price to last 12 months' ("LTM") earnings.

                  The figures for the California Bank  Acquisitions,  Small Bank
Acquisitions,  and 1996  Small Bank  Acquisitions  produced,  respectively:  (i)
median  percentage of premium to core  deposits of 6.3%,  5.5%,  and 6.3%;  (ii)
median multiple of purchase price to tangible book value of 163.1x,  137.7x, and
157.2x;  and (iii) median  multiple of purchase  price to LTM earnings of 17.5x,
19.4x, and 13.7x. In comparison,  based upon an assumed purchase price of $19.60
for  each  share of  Mercantile  Common  Stock,  Carpenter  determined  that the
consideration  to be received by the holders of  Mercantile  Common Stock in the
Merger  represented a percentage of premium to core deposits of 7.4%, a multiple
of  price  to  tangible  book  value  of  137.8x  and a  multiple  of  price  to
Mercantile's  earnings for the 11 months ended November 30, 1996 (annualized) of
14.1x.

                  No other company or transaction  used in the above analysis as
a comparison is identical to Mercantile or the 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 and the  announced  acquisition  prices of the companies to which
Mercantile and the Merger are being compared.

                  Contribution Analysis.  Carpenter analyzed the contribution of
each of Mercantile and SierraWest to, among other things,  total tangible common
equity,  assets, LTM net income,  gross loans and core deposits of the pro forma
combined  companies at or for the period ended September 30, 1996. This analysis
showed,  among other things, that based on pro forma combined balance sheets for
Mercantile  and  SierraWest  at  September  30,  1996,   Mercantile  would  have
contributed 13.5% of tangible common equity,  10.5% of assets, 9.6% of loans and
10.5% of core  deposits.  Pro forma income  statements for the nine months ended
September 30, 1996 indicated that Mercantile would have contributed 18.1% of the
net income of the pro forma combined companies.  Based upon analysis assuming an
Average  Price for  SierraWest  Common Stock of $16.00 and therefore an exchange
ratio in the Merger of 0.61 of a share of SierraWest Common Stock for each share
of Mercantile Common Stock and $9.79 in cash for each share of Mercantile Common
stock,  net of the cash  payout  holders of  Mercantile  Common  Stock would own
approximately  6.2% of the  combined  companies  based on fully  diluted  shares
outstanding on the date of the opinion.

                  The  summary set forth above does not purport to be a complete
description of the  presentation by Carpenter to the Mercantile  Board or of the
analyses  performed by Carpenter.  The preparation of a fairness  opinion is not
necessarily  susceptible to partial analysis or summary  description.  Carpenter
believes that its analyses and the summary set forth above must be considered as
a whole and that  selecting  a portion  of its  analyses  and  factors,  without
considering  all analyses and factors,  would create an  incomplete  view of the
process  underlying the analyses set forth in its presentation to the Mercantile
Board.  In addition,  Carpenter  may have given  various  analyses  more or less

                                       21
<PAGE>
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 Carpenter's
view of the actual value of Mercantile or the combined companies.  The fact that
any specific  analysis has been referred to in the summary above is not meant to
indicate that such analysis was given greater weight than any other analysis.

                  In   performing   its   analyses,   Carpenter   made  numerous
assumptions with respect to industry performance,  general business and economic
conditions and other matters, many of which are beyond the control of Mercantile
or  SierraWest.   The  analyses  performed  by  Carpenter  are  not  necessarily
indicative of actual values or actual future results, which may be significantly
more or less  favorable  than  suggested by such  analyses.  Such  analyses were
prepared  solely  as  part  of  Carpenter's  analysis  of  the  fairness  of the
consideration  to be received by the holders of  Mercantile  Common Stock in the
Merger and were provided to the Mercantile Board in connection with the delivery
of  Carpenter's  opinion.  The  analyses do not purport to be  appraisals  or to
reflect  the prices at which a company  might  actually be sold or the prices at
which any  securities  may trade at the present  time or any time in the future.
The  forecasts  utilized by  Carpenter  in certain of its  analyses 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 contemplated in such forecasts.

                  Pursuant to the Engagement Letter, Mercantile paid Carpenter a
fee of $17,500 upon delivery of the fairness opinion. Mercantile has also agreed
to reimburse Carpenter for its reasonable out-of-pocket expenses. Mercantile has
agreed to indemnify  Carpenter,  its affiliates,  and their respective partners,
directors,  officers,  agents,  consultants,  employees and controlling  persons
against certain liabilities.


Interests of Certain Persons in the Merger

                  As of April 17, 1997, the directors and executive  officers
of Mercantile  owned an aggregate of 188,565  shares of Mercantile  common stock
which,  if owned by them at the Effective  Date, will be converted into cash and
shares of SierraWest common stock with an approximate  aggregate market value of
$3,694,000, based on a market price for SierraWest shares of $19.00 per share.

                  Michael Burkart,  president of Mercantile, has a contract with
Mercantile under which he is entitled, upon completion of the Merger, to certain
incentive  compensation based on the value paid to Mercantile  shareholders.  If
the Exchange Amount is at least $6,293,000,  his incentive  compensation will be
$50,000. He will receive an additional $25,000 for each increment of $484,000 by
which the Exchange Amount exceeds $6,293,000.


                  The Agreement provides that Mercantile employee Denis Long 
will be eligible for employment by SierraWest provided that he and SierraWest
have agreed to the terms of employment on or before the Determination Date;
provided, in the event that he has not reached agreement with SierraWest by such
date, Mercantile will have no obligation to terminate Denis Long prior to the
Effective Date.  To resolve any questions as to the rights to the parties under
the agreement and their respective relationships with Denis Long, Mercantile and
SierraWest, with the consent of Denis Long, have entered into a letter agreement
which provides: (1) As of the Effective Date, the employment of Denis Long shall
be terminated and he shall have no further rights under the terms of any employ-
ment contracts that may exist between Denis Long and Mercantile; (2) In 
consideration of receipt of an enforeceable release from Denis Long, SierraWest
and Mercantile shall jointly make a payment to him equal to $85,000 (one year's
base salary) less applicable withholdings as full and final severance.  Each of
SierraWest and Mercantile shall bear one-half of the severance payment; and (3)
Following the Effective Date, SierraWest will have the right, but not the
obligation, to offer further employment to Denis Long on such terms as may be 
agreed.

Principal Terms of the Merger

                  General.  The following  description of the principal terms of
the Merger is subject to and qualified in its entirety by reference to the terms
of the Agreement and the Merger  Agreement,  copies of which are annexed to this
Proxy Statement/Prospectus as Annex A.

                  Effective  Date of Merger.  The  Agreement  provides  that the
Merger  will be  consummated  upon the filing of the Merger  Agreement  with the
California Secretary of State and the Superintendent in accordance with the laws
of California. It is contemplated that the Effective Date will occur on or about
June 30, 1997, or as soon thereafter as practicable, assuming the conditions set
forth  in  the  Merger  Agreement  are  fully  satisfied  or  waived.  See  "THE
MERGER--Terms of the Merger--Representations  and Warranties;  Conditions to the
Merger."

Exchange Amount.  For purposes of the Agreement, capitalized
                  terms have the following meanings:

Exchange Amount                       $6,601,000, adjusted as described below.

                                   22
<PAGE>

Cash Component                        Cash  portion  of the  Exchange
                                      Amount equal to  $3,300,500,  increased or
                                      decreased by one-half of the amount of the
                                      adjustment  described below and reduced by
                                      the amount of cash allocated to holders of
                                      shares  of  Mercantile  common  stock  who
                                      exercise dissenters' rights


Stock Component                       Newly   issued    shares   of SierraWest 
                                      common stock with an aggregate Market 
                                      Value  equal  to  the  $3,300,500,
                                      increased  or decreased by one-half of the
                                      amount of any adjustment  described below;
                                      provided  however,  the  total  number  of
                                      newly issued shares of  SierraWest  common
                                      stock shall not exceed 250,000.
                                   
Per Share Cash  Component             The  aggregate  Cash Component   divided
                                      by  the  number  of outstanding  shares of
                                      Mercantile common stock on the Effective
                                      Date.

Per Share Stock  Component            The aggregate Stock Component divided   by
                                      the   number  of outstanding  shares of
                                      Mercantile  common stock on the Effective
                                      Date.

Exchange Ratio                        The Per Share Stock Component divided by
                                      the Market Value

Market Value                          The average of the closing prices of
                                      the shares of  SierraWest  common stock as
                                      reported  in the  western  edition  of the
                                      Wall  Street  Journal  for the 20  trading
                                      days preceding the Determination Date

Determination Date                    The fifth business day preceding the
                                      Effective Date.

Adjustment Date                       The last day of the month preceding the
                                      Determination Date.


                  On the Effective  Date, the  outstanding  shares of Mercantile
common  stock  (other than any shares as to which  dissenters'  rights have been
perfected) will be converted into the right to receive a combination of cash and
shares of the common stock,  no par value, of SierraWest with an aggregate value
equal to the  Exchange  Amount.  The Cash  Component  shall be  one-half  of the
Exchange  Amount reduced by the amount of cash allocated to holders of shares of
Mercantile  common stock who exercise  dissenters'  rights.  The Stock Component
will comprise the balance of the Exchange Amount, provided that the total number
of SierraWest  shares to be issued shall not exceed  250,000.  In the event that
the Stock  Component of the Exchange Amount reaches the maximum number of shares
of SierraWest common stock, the Cash Component shall not be adjusted.

                  If the Exchange Amount remains $6,601,000,  the per share Cash
Component  and per share Stock  Component  will each be $9.795 and the per share
Exchange Amount will be $19.59. The range of the Exchange Ratio is a function of
the Market Value of  SierraWest's  common stock on the  Determination  Date. The
resulting number of shares of SierraWest  common stock to be issued are shown by
the following tables.



                              Market Value                           Number
                            SierraWest Common    Exchange            Shares
                                  Stock             Ratio           Issued
                                 $12.00            0.741884          250,000
                                  13.00            0.741884          250,000
                                  14.00            0.699596          235,750
                                  15.00            0.652957          220,033
                                  16.00            0.612147          206,281
                                  17.00            0.576138          194,147
                                  18.00            0.544131          183,361
                                  19.00            0.515492          173,711
                                  20.00            0.489717          165,025
                                  21.00            0.466398          157,167
                                  22.00            0.445198          150,023
                                  23.00            0.425841          143,500
                                  24.00            0.408098          137,521
                                  25.00            0.391774          132,020

                  The  above  table  shows the  Exchange  Ratio for one share of
Mercantile  common stock  exchanged  for one-half  cash and one-half  SierraWest
common stock. For each share of Mercantile  common stock exchanged  entirely for
SierraWest  common  stock,  the  Exchange  Ratio would be twice the amount shown
above.

                  The Agreement does not impose a floor or ceiling on the Market
Value  (other than the  limitation  resulting  from the  250,000  ceiling on the
number of shares of SierraWest common stock that may be issued), so the Market 
Value as of the Determination Date may be lower or higher than the lowest and 
highest values for Market Value shown in the above table. On April 16, 1997,
last reported sales price of SierraWest common stock as reported by the Nasdaq
National Market was $18.00 per share which equates to an Exchange Ratio of 
0.544131 and 183,361 shares issued. As of the Determination Date, the actual
market price of SierraWest  common stock may be higher or lower than such price.
There can be no assurance that Mercantile  shareholders  who receive  SierraWest
shares in the Merger will be able to sell  SierraWest  Shares at prices equal to
the Market Value, as the term is defined for purposes of the Exchange Ratio.


                                       23
<PAGE>



                  The following  table assumes an Exchange  Amount of $6,601,000
and shows the adjusted  value of the  Exchange  Amount,  in  aggregate  dollars,
dollars per share and as a percentage of the unadjusted  Exchange Amount, if the
Market  Value  were to fall  below  $13.20  and the limit of  250,000  shares of
SierraWest common stock applied.
<TABLE>

                                                                              Adjusted                   Percentage of the
                                            Adjusted Value                    Per Share                      Unadjusted
             Market Value                 Of Exchange Amount               Exchange Amount                Exchange Amount
                <S>                             <C>                           <C>                             <C> 
                $13.20                          $6,600,500                    $19.59                          100.0%
                 13.00                           6,550,500                     19.44                           99.2
                 12.00                           6,300,500                     18.70                           95.4
                 11.00                           6,050,500                     17.96                           91.2
                 10.00                           5,800,500                     17.21                           87.9
                  9.00                           5,550,500                     16.47                           84.1
                  8.00                           5,300,500                     15.73                           80.3

</TABLE>

                  SierraWest  and Mercantile do not expect that the Market Value
will fall below $13.20 per share.





                                       24
<PAGE>




                  Adjustments to the Exchange Amount.

                  Core Deposits. The Exchange Amount will be reduced by 7.44% of
the amount by which  Mercantile core deposits are less than $22.7 million.  Core
deposits  include all deposits of Mercantile  other than:  (i)  certificates  of
deposit;  (ii)  brokered  deposits,  wholesale  deposits  or  deposits  of other
depository institutions; (iii) deposits maintained by the officers, directors or
shareholders  of Mercantile  or their related  interests to the extent that such
deposits exceed $1 million in the aggregate; and (iv) deposits opened or renewed
after the date of the Agreement where the rate exceeds the rates  established by
SierraWest  for similar  deposit  products.  Total Deposits for purposes of this
calculation shall be determined by averaging the Total Deposits reflected on the
books of Mercantile for the 20 business days  preceding the Adjustment  Date. At
March 31, 1997, Mercantile's core deposits, as defined, were $24.1 million. See
"SUMMARY - Recent Developments".

                  Shareholders' Equity. The Exchange Amount will be increased or
decreased by the amount by which Mercantile's  Adjusted  Shareholders' Equity is
greater or less than $4,912,000.  Adjusted  Shareholder Equity shall be computed
in accordance  with GAAP but shall reflect the following  adjustments  which may
not be in accordance with GAAP: Shareholders' equity will be reduced to reflect:
(a)  reserves  and/or  accruals   allocated  to  certain  assets  identified  by
SierraWest and Mercantile in the Agreement;  (b) an increase,  if necessary,  in
Mercantile's  general  allowance  for loan  losses  to a level  consistent  with
Mercantile's  calculation  methodology in effect as of December 31, 1996; (c) an
increase,  if necessary,  in Mercantile's general allowance for loan losses that
would be required by  SierraWest's  loan grading  system as described in Section
3.2(i) of the Agreement;  and (d) the amount necessary to increase the valuation
reserve  reflected on Mercantile's  books to offset the effect of any additional
carry-forward tax losses resulting from additions to Mercantile's  allowance for
loan  losses  or  operating  losses  occurring  after  December  31,  1996.  All
adjustments,  other than (d), will be net of the related tax benefit or cost. At
March 31, 1996, Mercantile's  shareholders' equity  under GAAP was approxi-
mately  $5,024,000.  See "SUMMARY - Recent Developments".  No assurance can be 
given that actual shareholders' equity or adjusted shareholders' equity will be 
higher or lower than this amount as of the Effective Date.

                  The Agreement  limits the Stock Component to 250,000 shares of
SierraWest  common stock.  If the Exchange  Amount remains at $6,601,000 and the
Stock Component  remains at $3,300,500,  the Exchange Amount will effectively be
reduced by any decrease in the average stock price of  SierraWest  common stock,
during the  measurement  period below $13.20 per share.  The last  reported sale
price for SierraWest common stock on April 16, 1997 was $18.00 per share.

                  Cash/Stock Election.  The Exchange Amount will be allocated to
the Stock Component and the Cash Component in accordance the following  election
and procedures (the "Cash/Stock Election").

                  Each  Mercantile  shareholder  may elect to receive his or her
portion of the Exchange  Amount in either all SierraWest  shares or all cash. If
no election is made, the shareholder  will receive a Cash Component equal to 50%
of such  shareholder's  pro rata  portion  of the  Exchange  Amount  and a Stock
Component of 50% of such  shareholder's pro rata portion of the Exchange Amount,
subject to the adjustment described in the next paragraph.

                  The Cash/Stock  Election is subject to the limitation that the
aggregate Cash Component for all Mercantile  shareholders  electing cash may not
be more than  $3,300,500,  reduced by the amount of cash allocated to holders of
shares of  Mercantile  common  stock who  exercise  dissenters'  rights.  If the
aggregate Cash Component is  undersubscribed,  the  unsubscribed  portion of the
aggregate  Cash Component will be allocated pro rata (by number of shares) among
all Mercantile  shareholders  electing stock. If the aggregate Cash Component is
oversubscribed,  the Cash Component of each Mercantile  shareholder  electing to
receive  cash will be reduced pro rata (by number of shares  electing to receive
cash) so that the aggregate Cash Component of all Mercantile  shareholders  will
equal  $3,300,500,  as adjusted.  The total of the Cash  Component and the Stock
Component  will always equal the Exchange  Amount as adjusted and subject to the
limitation on the total number of shares of SierraWest common stock to be issued
as part of the Exchange Amount.

                  A Mercantile  shareholder  may not make a Cash/Stock  Election
until after the  Effective  Date.  Immediately  following  the  Effective  Date,
SierraWest  shall send to each  Mercantile  shareholder a letter of  transmittal
describing the Cash/Stock Election in more detail and providing forms for making
the Cash/Stock Election, as desired.

                  The Cash/Stock Election,  if made, must be made for all shares
held in the name of the Mercantile  shareholder.  A Mercantile  shareholder  who
holds  shares  in two or  more  capacities  or in  different  names  may  make a

                                        25
<PAGE>
different  Cash/Stock  Election  for each name or capacity  in which  shares are
held.  However,  shares  represented by a single  certificate  may make only one
Cash/Stock Election.
                                 
                  Mercantile shareholders who make a Cash/Stock Election have no
assurance  that  they  will  receive  all  cash  or all  stock  or any  specific
proportion thereof.

                  Rights of Holders After  Effective Date;  Dividends.  Promptly
after the consummation of the Merger,  SierraWest will appoint an exchange agent
(the  "Exchange  Agent"),  who will  forward a letter of  transmittal  to former
shareholders of Mercantile  containing detailed  instructions for the Cash/Stock
Election and for the surrender of certificates  representing  Mercantile  common
stock.  Certificates  should not be surrendered by shareholders until the letter
of transmittal is received.  For purposes of voting and  establishing  record of
ownership of SierraWest common stock for the period from and after the Effective
Date,  any  holder  of  Mercantile  common  stock  who  does not  surrender  the
certificates representing such shares to the Exchange Agent, as discussed above,
(i) shall be deemed to hold that  number of shares of  SierraWest  common  stock
that such holder would otherwise be entitled to receive if such certificates had
been  surrendered,  and (ii) shall be  entitled  to vote in regard to any matter
submitted to the SierraWest shareholders for their approval. Persons entitled to
receive  certificates  for  SierraWest  common  stock will not  receive the Cash
Component or any dividends or other distributions of any kind which are declared
payable to  shareholders  of record of the  SierraWest  common  stock  after the
Effective  Date  until they have  surrendered  their  certificates  representing
Mercantile common stock. Upon surrender of their  certificates,  the holder will
be paid,  without  interest,  the Cash Component of the Exchange  Amount and any
dividends or other  distributions with respect to the SierraWest common stock as
to which the record date and  payment  date  occurred on or after the  Effective
Date.  Except as described in this  paragraph,  after the  Effective  Date,  the
holders of certificates formerly representing Mercantile common stock shall have
no rights with  respect to such shares  other than any  dissenters'  rights they
have perfected under California Law.

                  Exchange  of   Mercantile   Stock   Certificates;   Fractional
Interests.   After  the  Effective   Date,  each  holder  of  a  certificate  or
certificates representing shares of Mercantile common stock immediately prior to
the Merger will,  upon the surrender  thereof to the Exchange Agent, be entitled
to receive a certificate or certificates representing the number of whole shares
of  SierraWest  common stock into which shares of  Mercantile  common stock will
have been  converted and a payment in cash with respect to the Cash Component of
the Exchange  Amount and  fractional  shares,  if any,  determined  as described
above.

                  In lieu of fractional  shares,  each holder shall receive,  at
the time of  surrender  of the  certificate  or  certificates  representing  the
holder's  Mercantile  common stock,  an amount in cash equal to the Market Value
per share of the common  stock of  SierraWest,  multiplied  by the fraction of a
share of  SierraWest  common  stock  to which  such  holder  otherwise  would be
entitled. No holder shall be entitled to dividends,  voting rights,  interest on
the value of, or any other rights in respect of a fractional share.

                  As  promptly  as  practicable  after  the  Effective  Date and
completion of the Cash/Stock Election,  letters of transmittal will be mailed to
holders of certificates  representing  shares of Mercantile common stock for use
in exchanging such  certificates for cash and shares of SierraWest common stock.
MERCANTILE  SHAREHOLDERS  SHOULD NOT SEND THEIR STOCK  CERTIFICATES FOR EXCHANGE
UNTIL THEY HAVE BEEN NOTIFIED THAT THE MERGER HAS BEEN CONSUMMATED AND THEY HAVE
RECEIVED A LETTER OF TRANSMITTAL.

                  Personnel Matters.

                  Employment At Effective  Date. Not later than 30 days prior to
the  Determination  Date,  SierraWest will notify Mercantile in writing of those
employees  who will be eligible  for  employment  by  SierraWest  or  Subsidiary
following the Effective  Date. Any Mercantile  employee who is not identified by
SierraWest  as being  eligible for  employment  will be terminated by Mercantile
immediately prior to the Effective Date. Mercantile will make severance payments
to those  employees  who are not eligible for  employment  by  SierraWest in the
amount  for each  such  employee  of not less  than two  weeks  salary  plus one
additional  week of salary for each year  served.  Mercantile  may,  in its sole
discretion,  make additional  special bonus payments to retain employees who are
deemed  necessary to complete the Merger.  All such payments will be included in
the calculation of Adjusted  Shareholders' Equity and will be paid or accrued on
or before the  Adjustment  Date.  Such  payments  will be  conditioned  upon the
receipt  of  enforceable  releases  from such  employees.  In  terminating  such
employees,  Mercantile  must  abide  by all  internal  policies  and  all  legal
requirements  for  termination  of  employment.  From the date of the  Agreement
through the Effective  Date,  Mercantile  will consult with the human  resources
representative  of  SierraWest  and keep that  representative  advised as to all
matters  related to  employment.  At any time after the Effective  Date,  former

                                    26    
<PAGE>

employees of Mercantile  who are employed by SierraWest  following the Effective
Date may be terminated by SierraWest,  with or without cause, for any reason not
prohibited by law. 

                    Notwithstanding the foregoing, the Agreement provides that 
Mercantile employee Denis Long will be eligible for employment by SierraWest 
provided that he and SierraWest have agreed to the terms of employment on or 
before the Determination Date; provided, in the event that he has not reached
agreement with SierraWest by such date, Mercantile will have no obligation to
terminate Denis Long prior to the Effective Date.  To resolve any questions as 
to the rights to the parties under the agreement and their respective relation-
ships with Denis Long, Mercantile and SierraWest, with the consent of Denis 
Long, have entered into a letter agreement which provides: (1) As of the Effect-
ive Date, the employment of Denis Long shall be terminated and he shall have no 
further rights under the terms of any employment contracts that may exist be-
tween Denis Long and Mercantile; (2) In consideration of receipt of an enforece-
able release from Denis Long, SierraWest and Mercantile shall jointly make a
pay ment to him equal to $85,000 (one year's base salary) less applicable with-
holdings as full and final severance.  Each of SierraWest and Mercantile shall
bear one-half of the severance payment; and (3) Following the Effective Date, 
SierraWest will have the right, but not the obligation, to offer further employ-
ment to Denis Long on such terms as may be agreed.

                  Retirement  Benefits.  Former  employees of Mercantile who are
employed by SierraWest  after the Effective Date ("Retained  Employees") will be
eligible for  participation  in the  SierraWest  401(k) plan and employee  stock
option plan at the earliest  normal entry date  following the Effective  Date as
allowed by applicable  law and the provisions of  SierraWest's  benefit plan, so
long as such employees then meet the eligibility  requirements for participation
in the SierraWest plan.  Retained  Employees will be credited for years of prior
service with Mercantile for vesting  (non-forfeitability) of accrued benefits in
the SierraWest  plan to the fullest extent such credit for such prior service is
permitted by  SierraWest's  plan and by the laws,  rules and  regulations of the
Internal  Revenue Service and the Employee  Retirement  Security Act of 1974, as
amended.

                  Other  Benefit  Plans.  After the Effective  Date,  any or all
Mercantile  welfare  benefit plans will be terminated  by  SierraWest.  Retained
Employees will be eligible for participation in any existing SierraWest plan, so
long as such employee  would  otherwise be eligible to participate in such plan.
Retained Employees will receive credit for length of service with Mercantile for
determination of eligibility or  participation in the SierraWest  health service
plans or long-term disability, voluntary accident and life insurance plans.

                  Retained  Employees will retain vacation benefits accrued with
Mercantile prior to the Effective Date, subject to SierraWest's  maximum accrual
and carryover limitations for such benefits. They will also retain the amount of
sick leave benefit  eligibility on  Mercantile's  records prior to the Effective
Date, to be available  subject to  SierraWest's  policy for sick leave benefits.
Mercantile  will  have  accrued  the  cost  of such  benefits  on the  books  of
Mercantile on or before the Adjustment  Date.  Following the Effective Date, all
retained  employees  will be subject to the standard  policies of SierraWest for
accrual of such benefits.

                  Retained  Employees will be subject to the severance  policies
in effect for all SierraWest employees.

                  Conduct  of  Business  Prior  to  the  Merger.  The  Agreement
contains  mutual  covenants  concerning the obligations of each party to use its
best  efforts to  consummate  the Merger,  the right of each party to review the
other party's books and records, and other customary matters.

                  Under the  Agreement,  Mercantile  has agreed to  conduct  its
businesses  in the  ordinary  course as  previously  conducted;  to preserve its
business and customer  goodwill intact;  to consult with SierraWest as to of any
decisions or actions in matters other than in the ordinary course; on reasonable
request, to permit a designated  representative or representatives of SierraWest
to attend and  participate  (but not vote) in all loan  committee  meetings  and
board of  directors  meetings,  except  as to  Merger-related  matters  or other
privileged matters; to maintain its properties in customary repair; to comply in
all material respects with all laws, regulations,  decrees and regulatory orders
applicable  to the  conduct  of its  business;  to keep  in  force  its  present
insurance to the extent practicable;  to make all required governmental filings,
returns and reports in a timely manner; to conduct an environmental  audit prior
to foreclosure on any property that it knows or should know is contaminated with
any  hazardous  substance  and  provide the results of such audit to and consult
with  SierraWest  prior to the  foreclosure on any such  property;  to not sell,
lease, pledge, assign, encumber or otherwise dispose of any of its assets except
other real estate owned or other property in the ordinary  course,  in each case
for adequate value, without recourse and consistent with its customary practice;
to not take any  action to create,  relocate  or  terminate  any branch or other
office or to form any new  subsidiary  or affiliated  entity;  to not settle any
litigation  or  disputes  involving  a claim of more than  $50,000  without  the
consent of  SierraWest,  which consent shall not be  unreasonably  withheld;  to
maintain an adequate allowance for loan losses; not to commit itself to any loan
or renewal or restructure of an existing loan with a principal  amount in excess
of $40,000 if unsecured,  or in excess of $80,000 and with a loan-to-value ratio
above 75% if secured by real  property;  not to purchase or sell any  investment
security with a maturity in excess of three years;  not to issue any certificate
of deposit  with a rate of interest in excess of 50 basis  points above the rate
sheets  provided  weekly to Mercantile by  SierraWest;  and not to enter into or
renew any contract having a duration  extending beyond nine months from the date
of the Agreement.

                  SierraWest  has  agreed to advise  the board of  directors  of
Mercantile  if  it  determines  to  undertake  any   transaction  or  series  of
transactions  outside the  ordinary  course of business  prior to the  Effective
Date;  to  preserve  its  business  and  customer  goodwill;   to  maintain  its
properties; to comply with all laws, regulations,  decrees and regulatory orders

                                   27
<PAGE>
applicable  to the  conduct  of its  business;  to keep  in  force  its  present
insurance to the extent practicable;  to make all required governmental filings,
returns and reports in a timely manner; and not to sell, lease, pledge,  assign,
encumber or otherwise  dispose of any of its assets  except for adequate  value,
without recourse and consistent with its customary practice.


                  Representations   and  Warranties.   The  Agreement   contains
representations  and warranties by SierraWest and  Mercantile  regarding,  among
other things,  their respective  organizations,  authorization to enter into the
Agreements,  capitalization,  financial  statements,  compliance with applicable
laws,  payments of taxes,  absence of  undisclosed  liabilities,  loan  quality,
employment  arrangements,  adequacy of its allowance for loan losses and pending
and threatened litigation. The Agreement provides that these representations and
warranties must be true immediately  prior to the consummation of the Merger but
will not survive  beyond the Effective  Date except to the extent they relate to
covenants or obligations to be performed after the Effective Date.

                  Conditions  to the  Merger.  The Merger will occur only if the
Merger  is  approved  by  the  requisite   vote  of   Mercantile   shareholders.
Consummation  of  the  Merger  is  subject  to  satisfaction  of  certain  other
conditions.  Such  conditions  include,  but are not limited to, the  following,
applicable to both parties: each party's representations and warranties shall be
true  and  correct;  each  party  shall  have  substantially  complied  with its
obligations  under the  Agreement;  neither party shall have suffered a material
adverse  change in its  business,  financial  condition or results of operations
since  September 30, 1996;  each party shall have delivered to the other certain
officers'  certificates;  SierraWest and Mercantile  shall have received certain
opinions from each other's legal  counsel;  no action or proceeding to enjoin or
impede the Merger shall be pending or  threatened;  the  Registration  Statement
shall have been declared  effective by the Commission and remain effective;  all
necessary   regulatory   approvals,   including   those  of  the  FDIC  and  the
Superintendent,  shall have been  received  without  any  materially  burdensome
conditions  (see  "Required   Regulatory   Approvals"  below);   Mercantile  and
SierraWest  shall have received an opinion of a law firm or  accounting  firm to
the effect that the exchange of shares of Mercantile common stock for SierraWest
common  stock  pursuant  to the  Merger  will  be  tax-free  to  the  Mercantile
shareholders  and  SierraWest  shareholders,  respectively;  and  SierraWest and
Mercantile  shall  have  exchanged  unaudited  financial  information  as of the
month-end before the Effective Date.

                  In addition,  Mercantile's  obligations to complete the Merger
are  subject  to its  receipt of an opinion  from its  financial  advisor to the
effect that the Merger is fair to it and its shareholders from a financial point
of view. It is noted that Carpenter has delivered such an opinion. See "Fairness
Opinion."

                  SierraWest's   obligations   are  subject  to  the  additional
condition  that all directors of  Mercantile  and the Brooks Trust (which in the
aggregate hold  approximately 56% of the outstanding shares of Mercantile common
stock)  shall  have  entered  into  a  shareholders'  agreement  by  which  such
shareholders  agree  to  vote  their  shares  and any  shares  over  which  such
shareholders  have voting authority in favor of the Merger and further agreeing,
to the extent permitted by law and the bylaws of Mercantile, to vote in favor of
the Merger by consent  solicitation.  The directors of Mercantile and the Brooks
Trust have entered into such agreements.  Additional  conditions to SierraWest's
obligations  are  that  (a)  Mercantile's  other  real  estate  owned  ("OREO"),
non-performing loans ("NPAs") (those loans not accruing interest on Mercantile's
books),  loans 90 days or more  past  due,  and  other  loans  under  regulatory
requirements classified as substandard or non-performing shall not exceed $2.495
million and the ratio of OREO and NPAs to Shareholder  Equity plus Allowance for
Loan Losses ("ALL") shall not exceed 42.5%; (b) Mercantile shall maintain an ALL
of no less  than  $962,000,  less  certain  reserves,  or 2.95% of total  loans,
whichever is greater, and a ratio of ALL to NPAs of not less than 38.5%; and (c)
SierraWest shall have received from each of Mercantile's  directors an agreement
to comply with Commission Rule 145 concerning  sales of SierraWest  common stock
after the Effective Date.

                  The Board of Directors of each party may waive any  conditions
to that party's  performance  of the  Agreement  unless  doing so would  violate
applicable law.

                  Required  Regulatory  Approvals.  The  Merger  is  subject  to
approval by the FDIC under the Bank Merger Act and by the  Department  under the
California  Banking Law. The Bank Merger Act provides that no transaction may be
approved  which would result in a monopoly or which would be in  furtherance  of
any  combination  or conspiracy  to  monopolize or to attempt to monopolize  the
business of banking in any part of the United States,  or the effect of which in
any section of the country may be  substantially  to lessen  competition,  or to
tend to create a monopoly or which in any other  manner  might  restrain  trade,
unless  it is  determined  that  the  anticompetitive  effects  of the  proposed
transaction are clearly outweighed in the public interest by the probable effect
of the  transaction in meeting the  convenience and needs of the community to be
served.  In conducting a review of any  application  for  approval,  the FDIC is
required to consider the financial and managerial resources and future prospects
of the company or companies  and the banks  concerned  and the  convenience  and

                                      28
<PAGE>
needs of the  community  to be  served.  An  application  may be denied if it is
determined  that the financial or managerial  resources of the acquiring  entity
are inadequate.

                  A transaction  approved by the FDIC may not be consummated for
15 days after such approval.  During such period, the U.S. Department of Justice
may commence legal action  challenging the transaction under the antitrust laws.
If,  however,  the Department of Justice does not commence a legal action during
such 15-day period, it may not thereafter challenge the transaction except in an
action commenced under the  antimonopoly  provisions of Section 2 of the Sherman
Antitrust  Act. The Bank Merger Act provides for the  publication  of notice and
the  opportunity  for  administrative  hearings  relating to the application for
approval under the Bank Merger Act and authorizes the FDIC to permit  interested
parties to intervene in the proceedings.  If an interested party is permitted to
intervene,  such intervention could  substantially delay the regulatory approval
required for consummation of the Merger.

                  The  Merger  also  must  be  approved  by  the  Superintendent
pursuant to the California  Banking Law. The California Banking Law requires the
Superintendent to consider factors and standards  substantially similar to those
under the Bank Merger Act.

                  Based on current precedents, the managements of SierraWest and
Mercantile  believe  that  the  Merger  will  be  approved  by  the  appropriate
regulatory  agencies and will not be subject to challenge by the  Department  of
Justice under the antitrust laws. However, no assurance can be provided that the
regulatory  agencies or the Department of Justice will concur in this assessment
or that any  approval by the  regulatory  agencies  will not contain  conditions
which are materially burdensome to SierraWest or Mercantile.

                  Dissenters'  Rights of Appraisal.  Shareholders  of Mercantile
who vote  against the Merger may be entitled  to certain  dissenters'  appraisal
rights under  Chapter 13 of the  California  General  Corporation  Law ("Chapter
13").   Chapter   13  is  set   forth  in  full  in   Annex  C  to  this   Proxy
Statement/Prospectus.

                  Important details  concerning these requirements are set forth
below;  failure to take these actions in a timely and proper fashion will result
in the loss of dissenters' appraisal rights.

                  The following  discussion  is not a complete  statement of the
law relating to dissenters' rights and is qualified in its entirety by reference
to Annex C. This  discussion  and Annex C should be  reviewed  carefully  by any
shareholder  of  Mercantile  who wishes to  exercise  dissenters'  rights or who
wishes  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 Merger is consummated, those shareholders of Mercantile
who elect to exercise  their  dissenters'  rights and who in a timely and proper
fashion  perfect such rights will be entitled to receive the "fair market value"
of their shares in cash.  Pursuant to Section 1300(a) of the California  General
Corporation  Law,  such "fair market  value" would be  determined  as of the day
before  the  first  announcement  of the  terms  of the  Merger,  excluding  any
appreciation  or  depreciation  caused by the Merger.

                  In  order  to  qualify  for  dissenters'  rights,   Mercantile
shareholders  (i) must make a written demand on Mercantile  within 30 days after
Mercantile  mails to  shareholders  the notice of approval of the Merger and the
procedure  to be  followed,  and (ii) must not vote their shares in favor of the
Merger.

                  A written demand by a Mercantile shareholder should be sent to
Mercantile  Bank, 455 Capitol Mall,  Sacramento,  California  95814,  Attention:
Corporate  Secretary.  The written demand must (i) state the number and class of
shares held of record by such shareholder which the shareholder demands that the
company  purchase for cash, and (ii) 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  announcement  of the  proposed  Merger.  That  statement  will
constitute an offer by the  shareholder to sell his or her dissenting  shares to
the company at that price.

                  If the Merger is approved,  Mercantile  will,  within ten days
after  the  Meeting,  mail to any  shareholder  who has a right to  require  the
company to  purchase  his or her shares a notice that the  required  shareholder
approval of the Merger was obtained  (the "Notice of  Approval").  The Notice of
Approval  will set forth the price  determined  by  Mercantile  to represent the
"fair  market  value"  of any  dissenting  shares,  and will  set  forth a brief
description of the procedures to be followed by dissenting shareholders who wish
to pursue  further their  statutory  rights.  The  dissenting  shareholder  must
deliver his or her share certificate(s) for receipt by Mercantile within 30 days
after the date on which the Notice of Approval  was mailed to such  shareholder.
The certificate(s)  will be stamped or endorsed with a statement that the shares
are dissenting shares and will be returned to the dissenting shareholder.

                                       29
<PAGE>



                  The  statements in the Notice of Approval  will  constitute an
offer by Mercantile to purchase from its shareholders  any dissenting  shares at
the  price  stated,  but  only  if  the  Merger  is  consummated.  However,  the
determination  by  Mercantile  of  fair  market  value  is  not  binding  on its
shareholders,  and if a dissenting shareholder chooses not to accept such offer,
he or she has the right during a period of six months  following  the mailing of
the 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 of
dissenting  shares as  determined by the court in those  circumstances  could be
higher or lower than the amount  offered by Mercantile in the Notice of Approval
or the consideration provided for in the Agreements,  and any such determination
would be binding on the dissenting  shareholder or shareholders  involved in the
lawsuit and on the company. Any party may appeal the judgment.  The court action
to determine  the fair market value of shares will be suspended if litigation is
instituted  to  test  the   sufficiency  or  regularity  of  the  votes  of  the
shareholders  in authorizing  the Merger.  Furthermore,  no shareholder  who has
appraisal rights under Chapter 13 shall have any right to attack the validity of
the Merger except in an action to test whether the number of shares  required to
authorize the Merger has been legally voted in favor of the Merger.

                  Dissenting  Mercantile shares may lose their status as such if
any of the  following  events  occurs:  the Merger is  abandoned  (in which case
Mercantile shall pay on demand to its dissenting shareholders who have initiated
proceedings  in good faith as provided  under Chapter 13 all necessary  expenses
and reasonable  attorneys'  fees incurred in such  proceedings);  the dissenting
shares are transferred before being submitted to Mercantile for endorsement; the
dissenting  shareholder  withdraws  his  or  her  demand  with  the  consent  of
Mercantile;  or, in the absence of agreement between the dissenting  shareholder
and  the  company  as to  the  price  of  his or  her  shares,  such  Mercantile
shareholder  fails to file suit against the company or otherwise fails to become
a party to such suit  within six months  following  the mailing of the Notice of
Approval.

                 The receipt of a cash payment for dissenting shares will result
in recognition of gain or loss for federal and California state income tax
purposes by dissenting shareholders.  See  "THE MERGER - Certain Federal Income
Tax Consequences."

                  Non-Solicitation   Covenants.   Subject   to   the   fiduciary
obligations of its Board of Directors, Mercantile has agreed that neither it nor
any of its  officers,  directors,  affiliates  or other  agents  shall  initiate
negotiations  toward,  or otherwise effect or agree to effect,  any proposal for
any merger, sale of capital stock resulting in a change of control,  sale of all
or  substantially  all of the  assets,  or any  other  means of  acquisition  of
substantially   all  the   outstanding   capital  of  any  entity  (a  "Business
Combination")  of Mercantile.  The Agreement also requires  Mercantile to notify
SierraWest  immediately  of the  receipt by it of any  unsolicited  proposal  to
effect a Business  Combination with another entity. As of the date of this Proxy
Statement/Prospectus,  Mercantile  has not  received  such a proposal  since the
announcement of the proposed Merger.

                  Certain Federal Income Tax Consequences. As a condition to the
consummation  of the Merger,  SierraWest and Mercantile  will receive an opinion
from McCutchen,  Doyle, Brown & Enersen, LLP acceptable to them that for federal
and California income tax purposes: (a) the Merger will comply with the require-
ments of Internal Revenue Code Section 368; (b) except for the Cash Component 
of the Exchange Amount and any cash received in lieu of any fractional share,
no gain or loss will be recognized by holders of shares of Mercantile common
stock who receive shares of SierraWest common stock in exchange for the shares
of Mercantile  common  stock which they hold; (c) the holding period of shares
of SierraWest common stock exchanged for shares of Mercantile common stock will
include the holding  period of the shares of Mercantile common stock for which
they are exchanged,  assuming the shares of Mercantile  common stock are capital
assets in the hands of the holder  thereof at the  Effective  Date;  and (d) the
basis of the shares of SierraWest  common stock received in the exchange will be
the same as the basis of the shares of  Mercantile  common  stock for which they
are  exchanged,  less  any  basis  attributable  to  the  Cash  Component  or to
fractional  shares for which cash is  received.  The opinion is based on certain
assumptions discussed below.

                  A  shareholder  who perfects  dissenters'  rights and receives
payment for his or her Mercantile  shares will be treated as if such shares were
redeemed. In general, if the shares are held as a capital asset at the Effective
Date, the dissenting  shareholder will recognize a capital gain or loss measured
by the  difference  between  the  amount of cash  received  and the basis of the
shares in the hands of the dissenting  shareholder.  However, if such dissenting
shareholder owns,  directly or indirectly through the application of Section 318
of the Code, any shares of common stock as to which  dissenters'  rights are not
exercised and perfected and which are therefore  exchanged for SierraWest common

                                     30
<PAGE>
stock in the  Merger,  such  shareholder  may be  treated  as having  received a
dividend  in the  amount of cash paid to the  shareholder  in  exchange  for the
shares as to which dissenter's  rights were perfected.  Under Section 318 of the
Code, an individual is deemed to own stock that is actually  owned (or deemed to
be  owned)  by  certain  members  of  his  or  her  family  (spouse,   children,
grandchildren and parents,  with certain  exceptions) and other related parties,
including, for example, certain entities in which the individual has a direct or
indirect interest (including partnerships, estates, trusts and corporations), as
well as stock  that  such  individual  (or a  related  person)  has the right to
acquire upon exercise of an option or conversion  right held by such  individual
(or a related person). Each SierraWest or Mercantile  shareholder who intends to
dissent  from the Merger (see "THE MERGER -  Dissenters'  Rights of  Appraisal")
should consult his or her own tax advisor with respect to the application of the
constructive ownership rules to the shareholder's particular circumstances.

                  The opinion  assumes that as of the  Effective  Date the Stock
Component will be not less than 50% of the Exchange Amount.  If the Market Value
of  SierraWest  common  stock is less than  $13.20,  the Stock  Component  would
comprise less than 50% of the Exchange  Amount,  and this  assumption may not be
correct.  The tax opinion of McCutchen,  Doyle,  Brown & Enersen,  LLP, will not
provide any  assurance  as to the tax  consequences  of the Merger in such case.
Although no assurance can be given, SierraWest and Mercantile do not expect that
the Market Value will fall below $13.20 as of the  Effective  Date. If the Stock
Component were to fall below 50% of the Exchange Amount, McCutchen, Doyle, Brown
& Enersen, LLP has indicated that its ability to render the required form of tax
opinion will depend on the facts and  circumstances  at the time,  including the
actual percentage of the Exchange Amount  represented by the Stock Component and
the intent of Mercantile  shareholders  receiving  shares of  SierraWest  common
stock to hold or dispose of such shares following the Effective Date. SierraWest
and  Mercantile  will  consider  whether  any  revised  form of tax  opinion  is
acceptable to them. If they cannot obtain an acceptable  tax opinion,  they will
consider whether it is in the best interests of their  respective  companies and
shareholders  to proceed  with the Merger  notwithstanding  the absence of a tax
opinion,  to revise the Agreement to increase the Stock  Component  (but not the
value  of the  Exchange  Amount  otherwise  payable)  in order  to  satisfy  the
conditions and assumptions stated in the tax opinion or to abandon the Merger.

                  For federal tax  purposes,  the highest  marginal tax rate for
individuals on ordinary  income is 39.6%,  compared to 28% for capital gain, and
the highest  marginal tax rate for  corporations  is 35% on ordinary  income and
capital gain.  Capital  losses are treated  differently  than  ordinary  losses.
Essentially,  a  capital  loss  for  any  taxable  year  may  be  deducted  by a
corporation  in  that  year  only  to the  extent  of  capital  gain,  and by an
individual  in that year only to the extent of capital gain plus up to $3,000 of
ordinary  income.  Capital  losses not  deductible in the year they occur may be
carried forward  indefinitely by individuals and may be carried back up to three
years and forward up to five years by corporations.

                  This Proxy  Statement/Prospectus  does not provide information
about the tax  consequences of the Merger under any state,  local or foreign tax
laws. The shareholders of Mercantile are urged to consult their own tax advisors
with respect to all tax  consequences  of the Merger.  Expenses  incurred by any
shareholder  arising  from  disputes  with the IRS or any state or  foreign  tax
agency over the tax  consequences  of the Merger will not be borne by Mercantile
or SierraWest.

                  Accounting   Treatment.   The  management  of  Mercantile  and
SierraWest  expect  that the Merger  will be subject to the  purchase  method of
accounting. Under this method of accounting, Mercantile's assets and liabilities
will be reflected on  SierraWest's  future  financial  statements  at their fair
market value, and the excess of the aggregate Exchange Amount, if any, above the
fair market value of acquired assets and liabilities are allocated  between core
deposit intangibles and goodwill.  The core deposit intangible will be amortized
on a straight  line basis over 7 years and goodwill  will be  amortized  over 15
years.

                  The pro forma results of this  accounting  treatment are shown
in the  unaudited  pro forma  financial  data  included  elsewhere in this Proxy
Statement/Prospectus.

                  Termination and Amendment;  Termination Payment. The Agreement
may be terminated  any time prior to the Effective  Date as follows:  (a) by the
mutual  consent of the Boards of Directors  of both  SierraWest  and  Mercantile
before  consummation of the Merger;  (b) by the Board of Directors of SierraWest
on or after  June 30,  1997,  if any of the  conditions  to the  obligations  of
SierraWest have not been fulfilled or waived by SierraWest;  (c) by the Board of
Directors of SierraWest if (i) it has become aware of any facts or circumstances
of which it was not  aware on the date of the  Agreement  and  which  materially
adversely  affect   Mercantile  or  its  properties,   operations  or  financial
condition,  (ii) a materially adverse change shall have occurred since September
30,  1996,  in the  business,  financial  condition,  results of  operations  or
properties  of  Mercantile,   or  (iii)  there  has  been  material  failure  or
prospective  material  failure  on the part of  Mercantile  to  comply  with its
obligations under the Agreement,  or any material failure or prospective failure
to comply with any of the  conditions  set forth in Section 7 of the  Agreement;
(d) by the Board of Directors of SierraWest in the event that Mercantile  enters

                                   31
<PAGE>
into a  transaction  or  series  of  transactions  with a third  person or group
providing  for the  acquisition  of all or a  substantial  part  of  Mercantile,
whether by way of  merger,  exchange  or  purchase  of stock,  sale of assets or
otherwise;  (e) by the Board of  Directors  of  Mercantile  on or after June 30,
1997, if (i) any of the  conditions to the  obligations  of Mercantile  have not
been fulfilled or waived by Mercantile, provided, however, that if SierraWest is
engaged at the time in litigation (including an administrative appeal procedure)
relating  to an  attempt  to  obtain  one or  more  of the  required  regulatory
approvals or if  SierraWest  shall be  contesting  in good faith any  litigation
which seeks to prevent  consummation of the  transactions  contemplated  hereby,
such  nonfulfillment  shall  not give  Mercantile  the  right to  terminate  the
Agreement  until  the  later of (A) June 30,  1997,  and (B) 60 days  after  the
completion of such  litigation and of any further  regulatory or judicial action
pursuant  thereto,  including any further action by a  governmental  agency as a
result of any  judicial  remand,  order or directive or otherwise or any waiting
period with respect  thereto  provided such date shall not occur beyond December
31, 1997; (f) by the Board of Directors of Mercantile if (i) it has become aware
of any  facts or  circumstances  of  which  it was not  aware on the date of the
Agreement  and which can or do  materially  adversely  affect  SierraWest or its
properties,  operations or financial condition, (ii) a materially adverse change
shall  have  occurred  since  September  30,  1996  in the  business,  financial
condition,  results of  operations or assets of  SierraWest,  or (iii) there has
been  a  material  failure  or  prospective  material  failure  on the  part  of
SierraWest  to comply with its  obligations  under the  Agreement  or the Merger
Agreement,  or any material  failure or prospective  material  failure to comply
with any condition set forth in Section 8 of the Agreement;  or (g) by the Board
of Directors of Mercantile in the event  SierraWest or its affiliates enter into
a  business   combination  with  any  other  entity  which  does  not  expressly
contemplate  the  performance  by  SierraWest  or its  successor  in interest of
SierraWest's  obligations  under the Agreement and SierraWest  indicates it will
not consummate the Agreement.
                                     
                  If SierraWest  terminates  the Agreement  because of a willful
breach of the Agreement by Mercantile or because  Mercantile  has entered into a
transaction or series of transactions with a third person or group providing for
the acquisition of all or a substantial part of Mercantile, Mercantile shall pay
to SierraWest,  on demand,  the sum of $350,000.  If Mercantile  terminates this
Agreement  because of a willful breach of the Agreement by SierraWest or because
SierraWest  has entered into an agreement for a business  combination  that does
not  expressly  contemplate  the  performance  by SierraWest or its successor in
interest  of  SierraWest's   obligations  under  the  Agreement  and  SierraWest
indicates  it  will  not  consummate  the  Agreement,  SierraWest  shall  pay to
Mercantile,   on  demand,  the  sum  of  $350,000.  These  payments  are  deemed
consideration  or  liquidated   damages  for  expenses  incurred  and  the  lost
opportunity  cost for  time  devoted  to the  transactions  contemplated  by the
Agreement.  In addition, each party remains liable for its other expenses as set
forth in Section 10 of the Agreement.

                  Expenses. Each party agrees to pay the costs incurred incident
to the  performance  of its  obligations  under the Agreement,  including  costs
related  to  the  Registration  Statement  and  these  Proxy  Materials,   their
respective  financial  statements  and  the  fees of its  counsel,  accountants,
consultants and financial advisors.  Mercantile will pay or accrue up to $10,000
toward the printing costs of the Registration  Statement and the Proxy Materials
and the costs of distributing the Proxy Materials and other information relating
to these  transactions to shareholders of Mercantile.  All fees payable pursuant
to state  "blue-sky"  securities  laws, fees related to obtaining a tax opinion,
and the fee  required to be paid to the  Commission  to  register  the shares of
Sierra  common  stock will be shared  equally by the  parties.  For  purposes of
determining  Adjusted  Shareholders'  Equity,  all  expenses  of  Mercantile  in
connection  with the  Merger  will be  treated  as if they have been paid by and
accrued on the books of Mercantile as of the Determination Date.

                  Resales of SierraWest  Common Stock.  The shares of SierraWest
common stock to be issued to  Mercantile  shareholders  in  connection  with the
Merger  have been  registered  under the 1933 Act.  Such  shares  will be freely
transferable under the 1933 Act, except for shares issued to each person who may
be deemed to be an  "affiliate"  of  Mercantile  within the  meaning of Rule 145
under the 1933 Act (each an "Affiliate").  The shares of SierraWest common stock
received by Affiliates may not be sold without additional registration under the
1933 Act unless an exemption (including the exemption provided by Rule 145) from
such  registration  requirement is available.  The Affiliates  have entered into
agreements concerning the foregoing restrictions on transfer with respect to the
shares of  SierraWest  common  stock they will  receive in  connection  with the
Merger.  The  exemption  under Rule 145 permits  sale of shares if the issuer is
current in its filings  required under the 1934 Act, the Affiliate does not sell
more than the greater of 1% of the issuer's  outstanding shares or the number of
shares equal to the weekly average  trading volume over the preceding four weeks
in any three-month period, all sales are conducted as "broker's transactions" or
with a market  maker  and,  in the case of  persons  who  become  Affiliates  of
SierraWest  after the Merger,  the Affiliate  files Form 144 with the Commission
upon placing a sell order.

                  Conduct of Business of SierraWest and Mercantile Following the
Merger. When the Merger is consummated, the directors and officers of SierraWest

                                   32
<PAGE>
and the Bank will continue to be the  directors  and officers of SierraWest  and
the  Bank.  After  the  Merger,  Mercantile  will be  merged  into  the Bank and
Mercantile's separate existence will cease. The former head office of Mercantile
will continue to operate as a branch of the Bank.

                                       33
<PAGE>
                          UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS


                  Certain matters discussed or incorporated by reference in this
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 "INVESTMENT
CONSIDERATIONS", "SUMMARY", "PROPOSAL ONE: THE MERGER - Reasons for the Merger 
and Recommendation; Principal Terms of the Merger -- Exchange Amount", 
"UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS" and "MERCANTILE MANAGE-
MENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
OF MERCANTILE".  Therefore, the information set forth therein should be care-
fully considered when evaluating the business prospects of SierraWest and
Mercantile.
                  The   following   unaudited  pro  forma   combined   financial
statements  give effect to the Merger of SierraWest  and Mercantile on the basis
of the purchase  method of  accounting.  This method  requires that the purchase
price be allocated to the acquired  assets and  liabilities of Mercantile on the
basis of their estimated fair values as of the date of  acquisition.  Therefore,
on the Effective Date,  SierraWest will establish a new accounting and reporting
basis for the acquired assets and liabilities  which will be reflected in future
consolidated  financial  statements  of  SierraWest.  The  unaudited  pro  forma
combined  balance sheet assumes the Merger took place on December 31, 1996.  The
unaudited  pro  forma  combined  statement  of income  assumes  the  Merger  was
consummated  as of the  beginning  of the first  period  presented and includes
adjustments  directly  attributable  to  the  Merger  and  expected  to  have  a
continuing  impact on the combined  entity.  Share  information  was  calculated
using,  an aggregate  Cash  Component  of  $3,300,500  and an Exchange  Ratio of
0.515492, which corresponds to a SierraWest Market Value of $19.00 per share.


                  These unaudited pro forma combined financial statements should
be read in conjunction with the historical consolidated financial statements and
the related notes thereto of SierraWest and the historical  financial statements
and related notes thereto of Mercantile incorporated by reference or included in
this Proxy  Statement/Prospectus.  The unaudited pro forma  statements of income
are not  necessarily  indicative  of  operating  results  which  would have been
achieved had the Merger been consummated as of the beginning of the first period
presented and should not be construed as representative of future operations.
<TABLE>


                                      SierraWest and Mercantile
                          Pro Forma Combined Balance Sheet (unaudited) (1)

                                           (In thousands)
                                                                                     December 31, 1996

                                                                                         Adjustments


                                                                                                                    Pro Forma
                                                 SierraWest      Mercantile          Debit            Credit          Combined
<S>                                               <C>            <C>               <C>                <C>            <C> 
Assets

Cash and due from banks                           $ 58,634       $ 10,109                             $3,400 (3)     $ 65,343

Securities                                          35,216          3,507                                              38,723

Loans                                              323,366         31,893                                             355,259

   Allowance for loan losses                        (4,546)        (1,092)                                             (5,638)
                                                   -------         ------                                             -------

   Net loans                                       318,820         30,801                                             349,621

Premises and equipment, net                         12,358            123                                              12,481
Excess servicing on SBA loans                       14,338              0                                              14,338

Other assets                                         8,523          1,836                                              10,359

Intangible assets                                        0              0          $ 1,789 (6)                          1,789
                                                   -------         ------          ----------         -------          ------

   Total assets                                   $447,889       $ 46,376          $ 1,789            $3,400         $492,654
                                                  ========       ========          =========          ======         ========


</TABLE>



                                       34
<PAGE>



<TABLE>


                                             SierraWest and Mercantile
                                 Pro Forma Combined Balance Sheet (unaudited) (1)

                                                  (In thousands)


                                                                                 December 31, 1996

                                                                                         Adjustments


                                                                                                                   Pro Forma
                                                SierraWest      Mercantile          Debit            Credit         Combined
<S>                                               <C>            <C>               <C>               <C>          <C>
Liabilities and Shareholders' Equity

Deposits

Non-interest bearing demand                       $ 80,525       $ 8,368                                          $ 88,893

Savings and interest-bearing demand                133,706        13,187                                           146,893

Time certificates                                  185,420        19,691                                           205,111
                                                   -------        ------                                           -------

   Total deposits                                  399,651        41,246                                           440,897


Other liabilities                                    5,802           199                                             6,001

Convertible debentures                               8,520             0                                             8,520
                                                     -----        ------                                           -------

   Total liabilities                               413,973        41,445                                           455,418


Preferred stock                                          0             0                                                 0

Common stock                                        12,291         2,844            2,844 (5)         3,320 (1)     15,611

Retained earnings                                   21,654         2,090            2,090 (5)                       21,654

Net unrealized gain (loss) on available for
   sale securities                                     (29)           (3)                                 3 (5)        (29)
                                                      ----         -----            --------          --------      ------         
   Total shareholders' equity                       33,916         4,931            4,934             3,323         37,236
                                                    ------         -----            -----             -----         ------

   Total liabilities and shareholders' equity      447,889       $46,376           $4,934            $3,323       $492,654
                                                   =======       =======           =======           ======       ========


Shares outstanding                                   2,771           337              337               174 (4)      2,945
</TABLE>




                                       35
<PAGE>



<TABLE>

                              Pro Forma Combined Statements of Income (unaudited) (1)

                                     (In thousands, Except Per Share Amounts)

                                                     Year Ended
                                                  December 31, 1996

                                                                           Adjustments             Pro Forma
                                          SierraWest   Mercantile     Debit           Credit        Combined
<S>                                           <C>          <C>         <C>             <C>          <C> 

Interest and fees on loans                    $30,506      $3,457                                   $33,963

Interest on securities                          1,712         220      $ 170 (3)                      1,762

Other interest income                           1,051         370                                     1,421
                                                -----         ---        ------                       -----
                                                                            

   Total interest income                       33,269       4,047        170                         37,146

Interest on deposits                           11,735       1,689                                    13,424

Interest on convertible debentures                760           0                                       760
                                                  ---           -        ----                           ---
                                                                            

   Total interest expense                      12,495       1,689          0                         14,184

Net interest income                            20,774       2,358        170                         22,962

Provision for loan losses                       1,010         428                                     1,438
                                                -----         ---        ---                          -----
                                                                            

Net interest income after
  provision for loan losses                    19,764       1,930        170                         21,524

Service charges on deposit accts.               1,722         220                                     1,942

Other operating income                          5,616         204                                     5,820
                                                -----         ---                                     -----

   Total noninterest income                     7,338         424                                     7,762

Salaries and employee benefits                 12,086         797                                    12,883

Occupancy and equipment
  expense                                       3,486         202                                     3,688

Other operating expense                         6,125         699                                     6,824

Amortization of intangibles                         0           0        179 (6)                        179
                                              -------       -----        ------                       -----
  Total noninterest expense                    21,697       1,698        179                         23,574
                                               ------       -----        ---                         ------
                                                                    

Income before provision
  for taxes                                     5,405         656        349                          5,712

Provision for taxes                             2,077         298                      $140 (1)       2,235
                                                -----         ---        ---           -------        -----
                                                                           
Net income                                   $  3,328      $  358      $ 349           $140         $ 3,477
                                             ========      ======      =====           ====         =======
                                                                    

Net income per share, primary (7)               $1.19       $1.15                                    $ 1.17
Weighted average common shares
  outstanding, primary (1)                      2,802         312        312            486           2,976


Net income per share, fully diluted (7)         $1.01       $1.15                                     $0.89

Weighted average common shares
  outstanding, fully diluted (1)                3,747         312        312            486           3,921


</TABLE>

                               Notes to Pro Forma Combined Financial Statements

                  1. The pro forma combined  balance sheet reflects the issuance
of  173,711  shares  of  SierraWest   common  stock,  no  par  value,  upon  the
cancellation  of  336,980  shares of  Mercantile  common  stock,  no par  value,
outstanding  at December 31, 1996,  based upon the pro forma  Exchange  Ratio of
0.515492  shares  (based on a  SierraWest  Market  Value of $19.00 per share) of
SierraWest common stock for each share of Mercantile common stock and payment by
SierraWest  of  $9.795  per  share in cash on  account  of the  Cash  Component.
SierraWest  anticipates that the cash  consideration will be drawn from internal
resources and net interest  income has been reduced to reflect this  adjustment.
Total  cost to be  incurred  by  SierraWest  in  connection  with the Merger are
estimated  to  be  approximately  $100,000.  These  costs,  relating  to  legal,
printing,  accounting,  and other direct  expenses,  will be incorporated in the
total purchase price of the  transaction.  Additional  expenses of approximately
$150,000 will be incurred by Mercantile. The effect of this expense has not been
reflected in the above  unaudited  pro forma  financial  statements.  Income tax
expense  has been  adjusted to reflect  historical  tax expense to the pro forma
adjustments using an effective rate of 40%.

                  2. The pro forma  combined  per share  data for net income has
been  calculated  using  SierraWest's  weighted  average number of common shares
increased by such shares of Mercantile  outstanding  at December 31, 1996 (after
adjustment  using the  Exchange  Ratio of  0.515492  SierraWest  shares for each

                                   36
<PAGE>
Mercantile share) as if these shares were outstanding for each period presented.
Such pro forma per share data assumes no dissenting Mercantile  shareholders and
excludes the exercise of outstanding SierraWest stock options.

                  3. The pro forma  adjustments that represent cash expenditures
of $3.4 million and intangible assets of $1.8 million were necessary to allocate
the  purchase  price  to be paid to  acquire  Mercantile,  as well as pro  forma
adjustments  necessary  to show how the  acquisition  would  have  affected  the
historical  financial  statements if it had been consummated at January 1, 1996.
The  difference  between  fair  value of assets  and  liabilities  acquired  and
historical  book value was not  considered  to be material and therefore no fair
value adjustments have been made.

                  4. Total  consideration  is based on a purchase  price of $6.6
million,  of which $3.3  million  is to be paid in cash and the  balance of $3.3
million is to be paid in SierraWest common stock equal to173,711 shares based on
a pro forma Market Value of $19.00 per share.

                  5.       Mercantile's shareholders' equity ($2.8 million in 
common stock and $2.1 million in retained earnings) is eliminated.

                  6. The  difference  between the purchase price of $6.6 million
and the net equity of  Mercantile  of $4.9  million has been  allocated  to core
deposit  intangibles and goodwill which are amortized on a  straight-line  basis
over 7 years and 15 years,  respectively,  or  approximately  $170  thousand per
year.

                  7. Pro forma  combined  per share data for net income has been
calculated  using   SierraWest's   weighted  average  number  of  common  shares
outstanding increased by 173,711 shares to be issued using an Exchange Amount of
$6.6  million,  a Stock  Component  of $3.3  million,  a Cash  Component of $3.3
million,  a pro forma  Market  Value of $19.00 per share for  SierraWest  common
stock and no dissenting Mercantile shareholders.

               ------------------------------------------------

                  The  purchase  price  allocation  and  resulting  core deposit
                  intangible and goodwill are as follows:



                  Purchase price
                        Cash Component                          $3,300,500
                        Stock Component                          3,300,500

                           Total                                 6,601,000



                  Cash expenditures
                         Professional fees                         100,000


                  Total consideration                           $6,701,000


                  Mercantile shareholders' equity               $4,912,000
                  Core deposit intangible and goodwill          $1,789,000



                  Shareholders'  equity  is  shown  above  as  required  by  the
Agreement at the Effective Date.







                                       37
<PAGE>

                            INFORMATION ABOUT SIERRAWEST

                  SierraWest  was  incorporated  under  the  name  Sierra  Tahoe
Bancorp under the laws of the State of California on December 5, 1985, as a bank
holding company.  SierraWest owns 100% of the stock of SierraWest Bank, formerly
known as Truckee River Bank.  The  activities  of SierraWest  are subject to the
supervision of the FRB.  SierraWest may engage,  directly or through  subsidiary
corporations,   in  those  activities  closely  related  to  banking  which  are
specifically permitted under the Bank Holding Company Act of 1956, as amended.

                  SierraWest Bank was  incorporated  under the laws of the State
of California on March 19, 1980, and, with the approval of the Superintendent of
Banks of the  State of  California,  opened  for  business  in 1981.  SierraWest
commenced operations in Truckee,  California, a small tourist-based town located
in the County of Nevada and  situated in the High Sierra about 12 miles north of
Lake Tahoe.  The Bank changed its name to SierraWest Bank on October 1, 1996. It
currently  maintains  eleven  branches  offices  in the  following  communities:
Truckee (two branches),  South Lake Tahoe, Tahoe City, Kings Beach, Grass Valley
(two  branches),  Auburn and  Sacramento,  California  and Reno and Carson City,
Nevada.  In addition,  SierraWest Bank maintains seven separate lending offices,
primarily for its SBA lending activities, in the following communities: Truckee,
San  Francisco,  Sacramento,  Fresno,  and Chico,  California,  and Reno and Las
Vegas, Nevada.

                  The offices and operations of SierraWest Bank include those of
the former Sierra Bank of Nevada.  Sierra Bank of Nevada was incorporated  under
the laws of the State of Nevada on January 12, 1989,  and,  with the approval of
the Nevada Department of Commerce,  Division of Financial  Institutions,  opened
for  business  in Reno,  Nevada,  on  January  9, 1990.  On  October  29,  1990,
SierraWest acquired 100% of the outstanding shares of Sierra Bank of Nevada in a
one-for-one  exchange  of its stock for the stock of Sierra  Bank of Nevada.  On
October 1, 1996, Sierra Bank of Nevada merged with and into SierraWest Bank.

                  Sierra Tahoe Mortgage  Company was  incorporated  on April 19,
1982 and operated a traditional  single-family  mortgage banking  operation as a
subsidiary  of  SierraWest   Bank  until  July,   1995,   when  operations  were
discontinued.  SierraWest  and the  Bank  now  comprise  the  operations  of the
company.

                  For additional  information  see Item 1 of the 1996 SierraWest
Annual Report on Form 10-K incorporated herein by reference. Also, see "Summary
- - "Recent Developments".

                                       38
<PAGE>

                          INFORMATION ABOUT MERCANTILE


                  The following information is based upon financial results 
through December 31, 1996.  See also "Summary - "Recent Developments".

General

                  Mercantile is a California banking corporation incorporated in
1975. It is licensed by the California State Banking  Department as a commercial
bank.  Its  headquarters  is in  Sacramento,  California.  It conducts a general
commercial banking business from its office in Sacramento. At December 31, 1996,
Mercantile had assets of approximately $46.4 million and shareholders' equity of
approximately $4.9 million.  See "Summary - Recent Developments".


                  As a California  state-licensed bank, Mercantile is subject to
regulation,  supervision and periodic  examination by the Superintendent and the
FDIC.  Mercantile is not a member of the FRB System, but is nevertheless subject
to certain regulations of the FRB. Mercantile'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 Mercantile'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.  Mercantile is also subject to the  requirements  and  restrictions of
various consumer laws and regulations.

                  Mercantile  is  subject to the  FDIC's  regulations  governing
capital adequacy for nonmember banks. The federal banking agencies have proposed
regulations which would impose additional capital requirements on banks based on
the market risk in foreign exchange and commodity  activities and in the trading
of debt and equity investments.

                  Nonmember  banks are  required to maintain a minimum  ratio of
qualifying  total  capital to  risk-weighted  assets of 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 to those assets.

                  The FDIC has established a minimum leverage ratio of 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
4% or 5%.  In  addition,  Mercantile  is  subject  to the  7.5%  Tier 1  capital
requirement imposed by the Memorandum.

                  For information concerning Mercantile's regulatory capital,
see - "Regulatory Capital Requirements."

                  From time to time,  Mercantile is involved in litigation as an
incident to its business. In the opinion of management, no pending or threatened
litigation is likely to have a material adverse effect on Mercantile's financial
condition or results of operations.

Regulatory Agreement

                  On August 16, 1995,  Mercantile  entered into a Memorandum  of
Understanding with the FDIC and the Superintendent as a result of an examination
of Mercantile by the FDIC. The Memorandum  required that Mercantile take certain
actions within specified  periods of time. These  requirements  included,  among
other things,  that  Mercantile  (a) revise and formalize  various  policies and
procedures with respect to board and management  supervision,  lending and funds
management,  and compliance  with laws,  rules and  regulations;  (b) review and
maintain an adequate  allowance  for loan losses;  and (c) reduce the balance of
classified assets to $2,500,000 and $2,000,000 by December 31, 1995 and June 30,
1996, respectively.  See "SUMMARY -- Recent Developments".

                                   39
<PAGE>

                  Subsequently,  on July 8, 1996,  this  original  Memorandum of
Understanding was terminated and replaced with a new Memorandum of Understanding
(the"Memorandum")   with  the  FDIC  and  the  Superintendent,   which  requires
Mercantile to, among other things: (a) retain management  acceptable to the FDIC
and the Superintendent; (b) maintain a Tier 1 capital ratio that equals or 
exceeds 7.5% of total assets; (c) eliminate all assets classified "Loss" and
one-half of the assets classified "Doubtful" within 10 days of the July 8, 1996 
effective date; and, (d) reduce the balance of assets classified "Substandard"  
to $4,200,000,  $4,000,000,  $3,000,000, and $2,000,000 by September 30, 1996,
December 31, 1996, March 31, 1997, and June 30, 1997, respectively;  (e) revise,
adopt, and implement written lending and collection policies;  (f) establish and
maintain  an  adequate  Allowance  for Loan  Losses;  (g) adopt and  implement a
written  profit  plan;  (h)  submit a  revised  mid-range  strategic  plan;  (i)
eliminate  and/or correct all  violations of law; (j) develop or revise,  adopt,
and implement a written  liquidity  and funds  management  policy;  and (k) make
quarterly  reports  to the  FDIC  and the  Superintendent.  As a  result  of the
Memorandum,  Mercantile  is subject to  operating  restrictions,  including  the
payment of dividends.

                 As of September 30, December 31, 1996, and March 31, 1997,
assets  classified "Substandard" were approximately $3,848,000, $2,940,000, and
$2,632,000 respectively.  Management of Mercantile believes  Mercantile is in 
substantial  compliance with the terms and conditions of the Memorandum.  How-
ever,  no assurance can be given that  Mercantile  will meet or continue to be 
able to  meet  the  terms  and conditions of the Memorandum.  See "SUMMARY - 
Recent Developments".


Lending Overview

                  Mercantile  grants  commercial,  real estate  construction and
other real estate loans primarily in the greater Sacramento area. Generally, the
loans are secured by business assets and/or real property.

Distribution of Loans

                  The  distribution  of Mercantile's  loan portfolio,  as of the
dates indicated, is shown in the following table (in thousands):
<TABLE>
                                                                                  December 31,
Type of Loan:                                                1996         1995         1994          1993         1992
                                                             ----         ----         ----          ----         ----
<S>                                                       <C>           <C>         <C>           <C>          <C>    
  Real estate loans (includes loans secured primarily by real estate):
    Construction and land development...                  $  5,859      $  4,988    $   5,904     $  5,838     $  7,278
    Equity lines of credit .............                       997         1,265        1,232          141          128
    Other real estate secured...........                    11,969        16,208       14,252       12,481        8,721
                                                          --------      --------    ---------     --------     --------
  Total Real Estate Loans...............                    18,825        22,461       21,388       18,460       16,127

  Commercial and industrial loans.......                    12,461        13,798       12,729       16,350       16,486

  Individual and other loans............                       607           344          520          568          628
                                                          --------      --------    ---------     --------     --------

  Total Loans...........................                    31,893        36,603       34,637       35,378       33,242

  Less allowance for possible loan losses                    1,092           908        1,035          577          515
                                                          --------      --------     --------     --------      --------  

  Total Net Loans.......................                  $ 30,801      $ 35,695    $  33,602     $ 34,801     $ 32,727
                                                          ========      ========    =========     ========     ========
</TABLE>






                                       40
<PAGE>

Loan Commitments

                  At  December  31,  1996,   Mercantile   had  $7.4  million  in
undisbursed loan commitments compared with $8.8 million at December 31, 1995. In
addition,  standby letters of credit totaled $643 thousand and $594 thousand for
the years ended December 31, 1996 and 1995, respectively.

Credit Risk Management

                  Mercantile  seeks to mitigate  the risks  inherent in its loan
portfolio by adhering to certain underwriting  practices,  including analysis of
prior  credit  histories,  financial  statements,  tax  returns  and  cash  flow
projections of its potential borrowers.

                  Mercantile  also has an internal loan review system as well as
periodic  external  reviews.  Collection  of  delinquent  loans is generally the
responsibility  of the originating loan officer.  The Board of Directors reviews
the status of  delinquent  and problem  loans on a monthly  basis.  Mercantile's
underwriting  and review  practices  notwithstanding,  in the  normal  course of
business, Mercantile expects to incur loan losses in the future.

Asset Quality

                  The  following  table sets  forth the  amount of  Mercantile's
nonperforming assets as of the dates indicated (dollars in thousands).
<TABLE>
                                                                              December 31,
                                                        1996         1995         1994         1993         1992
                                                        ----         ----         ----         ----         ----
<S>                                                   <C>           <C>         <C>           <C>         <C>    

Nonperforming Assets:
Nonaccrual loans...................                   $   619       $  914      $   686       $1,037      $   400
Other real estate owned............                       770          700          700          280          751
                                                      -------       ------      -------       ------      -------
    Total nonperforming assets.....                   $ 1,389       $1,614      $ 1,386       $1,317      $ 1,151
                                                      =======       ======      =======       ======      =======

Accruing loans past due 90
  days or more.....................                   $   261       $  457      $     7       $   90      $   188

Restructured loans (in compliance
  with modified terms).............                   $   505       $  595      $   200       $  353      $    17

Nonperforming assets to
  total assets.....................                       3.0%         3.1%         3.2%         2.9%         2.7%
Allowance for possible loan
  losses to nonaccrual loans.......                     176.4%        99.3%       150.9%        55.6%       128.8%

</TABLE>
                  Mercantile  generally  places loans on nonaccrual  status when
interest  or  principal  payments  become  90 days or more past due  unless  the
outstanding  principal and interest is adequately secured and, in the opinion of
management,  is deemed in the  process  of  collection  and  accrued  but unpaid
interest is  reversed  against the current  year's  income.  Interest  income on
nonaccrual loans is recorded on a cash basis. Subsequent payments may be treated
as interest income or return of principal depending upon management's opinion of
the ultimate risk of loss on the individual  loan.  Cash payments are treated as
interest income where  management  believes the remaining  principal  balance is
fully collectible.  Additionally,  loans not 90 days past due may also be placed
on nonaccrual status if management  reasonably believes the borrower will not be
able to comply with the  contractual  loan  repayment  terms and  collection  of
principal or interest is in question.

                  Interest income on loans on nonaccrual  status during the year
ended December 31, 1996, that would have been  recognized  during that same year
if the loans had been current in accordance  with their  original  terms was not
material.

                  As of December 31, 1996 and 1995,  Mercantile had  outstanding
balances in impaired  loans of  approximately  $619 thousand and $914  thousand,
respectively,  which had valuation allowances of $206 thousand and $183 thousand
respectively.  The  average  outstanding  balance  of  impaired  loans  was $767
thousand  and $800  thousand  for the years  ended  December  31, 1996 and 1995,
respectively.  Impaired loans are loans for which it is probable that Mercantile
will not be able to collect all amounts due.



                                       41
<PAGE>

                  Except  for loans  which  are  disclosed  above,  there are no
assets as of December 31, 1996,  where known  information  about possible credit
problems of borrower causes  management to have serious doubts as to the ability
of the  borrower to comply with the present loan  repayment  terms and which may
become  nonperforming  assets.  However,  it is  possible  that  current  credit
problems exist that may not have been discovered by management.

                  The  following  table  shows  the  loans  outstanding,  actual
charge-offs,  recoveries  on loans  previously  charged off, the  allowance  for
possible loan losses and pertinent ratios during the periods and as of the dates
indicated (dollars in thousands).
<TABLE>
                                                                    December 31,
                                               1996         1995         1994         1993        1992
                                               ----         ----         ----         ----        ----
<S>                                         <C>           <C>          <C>          <C>         <C>    

Average loans.......................        $  34,162     $ 34,526     $  34,220    $  33,144   $  31,777
Total loans at end of period........           31,893       36,603        34,637       35,378      33,241

Allowance for possible loan losses:
Balance beginning of period.........        $     908     $  1,035     $     577    $     515   $     495
Actual charge-offs:
  Commercial and industrial.........               81          353           524           64           0
  Real estate.......................              201          139             0            0          65
  Installment.......................                0            9            12            4           0
                                            ---------     --------     ---------    ---------   ---------
    Total...........................              282          501           536           68          65
Less recoveries:
  Commercial and industrial.........               38            4             4            8           7
  Real estate.......................                0           77             0            0           0
  Installment.......................                0            0             0            0           0
                                            ---------     --------     ---------    ---------   ---------
    Total...........................               38           81             4            8           7
Net charge-offs.....................              244          420           532           60          58
Provision for possible loan
  losses............................              428          293           990          122          78
                                            ---------     --------     ---------    ---------   ---------

Balance end of period...............        $   1,092     $    908     $   1,035    $     577   $     515
                                            =========     ========     =========    =========   =========

Ratios:
  Net loans charged off to average
    loans outstanding..............              0.71%        1.22%        1.55%         0.18%       0.18%
  Net loans charged off to total loans
    at end of period...............              0.77         1.15         1.54          0.17        0.17
  Provision for possible loan
    losses to average loans........              1.25         0.85         2.89          0.37        0.25
  Provision for possible loan
    losses to total loans at end of period       1.34         0.80         2.86          0.34        0.23
  Net loans charged off to end of
    period allowance for possible
    loan  losses...................              22.34        46.26       51.40         10.40       11.26
</TABLE>


                  The provision for possible loan losses represents management's
determination  of the amount necessary to be added to the allowance for possible
loan losses to bring it to a level which is  considered  adequate in relation to
the  risk  of  foreseeable   losses  inherent  in  the  loan   portfolio.   Upon
determination  of a  specific  loss  in  the  portfolio,  an  adjustment  to the
allowance for possible loan losses is made.

                  In  making   this   determination,   management   takes   into
consideration  the overall growth trend in the loan  portfolio,  examinations of
supervisory  authorities,  internal and external credit reviews, prior loan loss
experience for Mercantile,  concentrations of credit risk,  delinquency  trends,
general and local economic conditions and the interest rate environment.

                  The  allowance  for loan losses does not  represent a specific
judgment that loan charge-offs of that magnitude will  necessarily  occur. It is
always  possible  that future  economic or other  factors may  adversely  affect
Mercantile's  borrowers,  and  thereby  cause loan  losses to exceed the current
allowance.





                                       42
<PAGE>

                  The  following  table  sets  forth   management's   historical
allocation  of the  allowance  for  possible  loan losses by loan  category  and
percentage of loans in each category.  Percentage  amounts are the percentage of
loans  in each  category  to total  loans at the  dates  indicated  (dollars  in
thousands).

<TABLE>
                                                                                 December 31,
                                                                       1996                        1995
                                                              Amount       Percentage      Amount        Percentage
<S>                                                           <C>               <C>       <C>                <C>        

Commercial and industrial loans..................             $  332            39%       $  398              38%
Real estate loans................................                750            59           500              61
Consumer loans to individuals(1).................                 10             2            10               1
                                                              ------           ----        ------            ---

    Total........................................             $1,092            100%       $ 908             100%
                                                              ======            ===        ======            ===
</TABLE>

(1)      Includes equity lines of credit.

Loan Maturities and Sensitivity to Changes in Interest Rates

                  The following  table sets forth the  distribution  by maturity
date of certain of  Mercantile's  loan  categories (in thousands) as of December
31, 1996. In addition, the table shows the distribution between total loans with
predetermined (fixed) interest rates and those with variable (floating) interest
rates (in  thousands).  Floating rates  generally  fluctuate with changes in the
prime rate of leading banking institutions.

<TABLE>
                                                                       Year Ended
                                                                     December 31, 1996
                                                                After One
                                                Within         But Within           After
                                              One Year(1)      Five Years        Five Years          Total
<S>                                           <C>              <C>              <C>               <C>       

Real estate - construction..................  $  5,236         $     315        $      308        $   5,859
Commercial..................................    11,137               669               654           12,460
Distribution between fixed
 and floating interest rate:
   Fixed interest rates.....................     1,099             1,713             1,675            4,487
   Floating interest rates..................    12,480            13,321             1,605           27,406


(1)      Demand loan and overdrafts are shown as "Within One Year"
</TABLE>





                                       43
<PAGE>

Average Assets, Liabilities and Shareholders' Equity; Interest Income and
Expense

                  The  following  table  presents,  for the  periods  indicated,
Mercantile's  distribution  of average  assets,  liabilities  and  shareholders'
equity,  as well as the total  dollar  amount of interest  income  from  average
interest-earning  assets and resultant yields and the dollar amounts of interest
expense  and  average  interest-bearing  liabilities  and  resultant  rates  (in
thousands except percentage amounts):
<TABLE>

                                                            Year Ended December 31,
                                    1996                              1995                               1994
- -------------------------------------------------------   -------------------------------   ------------------------------
<S>                    <C>         <C>       <C>         <C>         <C>        <C>         <C>            <C>     <C>  
                        Average    Yield/                 Average    Yield/                 Average        Yield/
                        Balance     Rate      Interest    Balance     Rate      Interest    Balance        Rate     Interest
Assets:
Interest-earning assets:
  Loans(1)...........   $ 34,162    10.12%   $   3,457   $ 34,526    11.14%     $   3,847   $  34,220      9.82%    $  3,362
  Investment securities    3,722     5.91          220      3,724     5.69            212       3,540      5.37          190
  Federal funds sold       5,725     5.19          297      5,862     5.65            331       2,013      3.83           77
  Other deposits.....      1,293     5.65           73      1,199     5.92             71       1,348      4.30           58
                        ---------            ---------   --------               ---------   ---------                -------
    Total interest-earning
      assets.........     44,902     9.01        4,047     45,311     9.85          4,461      41,121      8.97        3,687

Allowance for possible
loan losses.........        (978)                            (930)                               (572)

Non-earning assets:
   Cash and due from
     banks..........       2,319                            2,779                               2,545
   Premises and equipment,
     net............         133                              104                                  47
   Other assets.....       2,053                            1,416                               1,108
                        ---------                         --------                          ---------

   Total  assets....   $  48,429                         $ 48,680                           $  44,249
                       =========                         =========                          =========

Liabilities and Shareholders'
  Equity:
Interest-bearing liabilities:
  Transaction accounts $  14,533     2.92%   $     424   $ 13,885     4.31%     $     598   $  12,436      3.60%    $  448
  Savings accounts           378     2.65           10        423     3.55             15         410      3.66         15
  Certificates of deposit 21,447     5.85        1,255     22,670     6.19          1,404      20,130      4.83        973
                      -----------    ----      -------   --------     ----      ---------    ---------     ----     ------
 

   Total interest-bearing
   liabilities......      36,358     4.64        1,689     36,978     5.45          2,017      32,976      4.35      1,436
Non-interest-bearing liabilities:
   Transaction accounts    7,035                            7,227                               7,062
   Other liabilities         331                              308                                 116
                        ---------                           -------                          -------- 
   Total liabilities      43,724                           44,513                              40,154

Shareholders' equity:
   Common stock.....       2,658                            2,414                               2,414
   Retained earnings       2,060                            1,797                               1,709
Unrealized loss on
   securities.......         (13)                             (44)                                (28)
                       ---------                           --------                         ---------
   Total shareholders'
     equity.........      4,705                             4,167                               4,095
                       ---------                           --------                         ---------

   Total liabilities and
     shareholders'
     equity.........  $  48,429                          $ 48,680                           $  44,249
                      =========              --------    ========                 -------   =========

Net interest income.                         $  2,358                           $   2,444                          $ 2,251
                                             ========                           =========                          =======

Interest income as a
   percentage of interest -
      earning assets                 9.01%                            9.85%                                8.97%
Interest expense as a
      percentage of interest -
  earning assets.....               (3.76)                           (4.45)                               (3.49)
                                    -----                            -----                                -----

Net interest margin..                5.25%                            5.40%                                5.48%
                                     ====                             ====                                 ====
</TABLE>
(1)      Includes nonaccrual loans with an average balance of $767 thousand,
         $800 thousand, and $422 thousand for the years ended December 31, 1996,
         1995 and 1994, respectively.








                                       44
<PAGE>


Investment Securities

                  The   following   table   summarizes   the   amounts  and  the
distribution of Mercantile's investment securities (in thousands):

<TABLE>
                                                                           December 31,
                                                         1996                      1995                     1994
- ---------------------------------------------------------------------      --------------------      --------------------- 
                                                              Market                     Market                   Market
                                                  Cost      Value (1)       Cost       Value (1)       Cost     Value (1)
                                                  -----     ----------      ----       ----------      ----     ---------
<S>                                              <C>         <C>          <C>          <C>          <C>         <C>
U.S. Treasury securities....................     $   198     $    200     $    198     $    202     $    198    $    199

Securities of U.S. government
  agencies..................................       3,313        3,307        3,445        3,451        3,445       3,277
                                                 -------     --------        -----     --------     --------    --------

Total.......................................     $ 3,511     $  3,507     $  3,643      $ 3,653     $  3,643    $  3,476
                                                 =======      ========    ========      =======     ========    ========
</TABLE>

(1)      All securities are available for sale and are recorded at market.


Maturity of Investment Securities

                  The following  table presents the maturities for  Mercantile's
investment portfolio as of December 31, 1996 (dollars in thousands).

<TABLE>
                                                                                             December 31, 1996
                                                                                      Book        Average       Market
                                                                                      Value        Rate          Value
<S>                                                                                 <C>              <C>      <C>       

U.S. Treasury securities:
    Within 1 year.................................................................  $     198        4.02%    $     200
                                                                                     --------                  --------

U.S. government agencies:
  Within 1 year...................................................................        452        5.70           450
  After 1 year but within 5 years.................................................      2,611        6.32         2,605
  After 5 years but within 10 years...............................................        250        6.45           252
                                                                                    ---------                 ---------
    Total U.S. Government agencies................................................      3,313                     3,307
                                                                                    ---------                 ---------

Total.............................................................................  $   3,511                 $   3,507
                                                                                     ========                 =========
</TABLE>


Deposits

                  The following table indicates the maturity of Mercantile's CDs
of $100 thousand or more as of December 31, 1996 (dollars in thousands):
<TABLE>
                                                                                            December 31, 1996
                                                                                                       Percentage
                                                                                         Balance        of Total
<S>                                                                                     <C>                <C>
Three months or less................................................................... $    4,175          40.4%
Over three months through six months...................................................      3,368          32.6
Over six months through twelve months..................................................        972           9.4
Over twelve months.....................................................................      1,811          17.6
                                                                                        ----------        ------
Total.................................................................................. $   10,326         100.0%
                                                                                         =========         =====
</TABLE>




                                       45
<PAGE>

Repricing of Interest Earning Assets and Interest-Bearing Liabilities

                  The following  table sets forth the  distribution of repricing
opportunities  of  Mercantile'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 assets,  as of
December  31,  1996.  The table also sets forth the time  periods  during  which
interest-earning  assets and  interest-bearing  liabilities  will  mature or may
reprice earlier in accordance with their  contractual  terms.  The interest rate
relationships between the repriceable assets and repriceable liabilities are not
necessarily constant and may be affected by many factors, including the behavior
of  customers  in  response  to changes in interest  rates.  This 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 Mercantile  (amounts in thousands  except
percentage amounts).
<TABLE>

                                                                     December 31, 1996
                                                       Next Day    Over Three     One Year
                                                       to Three  Months Through    Through      Over
                                         Immediately    Months    Twelve Months  Five Years  Five Years       Total
<S>                                      <C>            <C>         <C>            <C>          <C>           <C>        

Assets:
  Federal funds sold...............      $   4,855      $     0     $      0       $      0     $     0       $  4,855
  Certificates of deposit..........              0          891          595              0           0          1,486
  Taxable investment securities....              0          650            0          2,611         250          3,511
  Loans............................         27,406(2)       396          703          1,713       1,675         31,893
                                          ----------      ------       ------       --------    --------        -------
  Total interest-earning assets             32,261        1,937        1,298          4,324       1,925         41,745   
                                          ----------    ---------    ---------      ---------   --------        -------


Liabilities:
  Savings deposits(1)..............         13,187            0            0              0           0         13,187
  Time Deposits....................              0        7,596        8,814          3,281           0         19,691
                                          ---------   ----------    ---------        -------     -------        -------
  Total interest-bearing liabilities        13,187        7,596        8,814          3,281           0         32,878 
                                          ---------   ----------    ---------        -------     -------        -------


Net interest earning assets (liabilities) $ 19,074     $ (5,659)     $(7,516)      $  1,043      $1,925      $   8,867
                                          =========    ========      =======       ========      ======      =========
Cumulative net interest earning assets
  (liabilities) ("GAP")............       $ 19,074     $ 13,415    $   5,899       $  6,942      $8,867
                                          =========    =========   ==========      =========     =======
Cumulative GAP as a percentage of
  total interest-earning assets....           45.7%        32.1%        14.1%          16.7%       21.2%
                                          ========     ========    =========       ========      ======

</TABLE>


(1)      Savings deposits include interest-bearing transaction accounts.

(2)      Includes loans which matured on or prior to December 31, 1996.


                  At December 31, 1996,  Mercantile  had $35.5 million in assets
and $29.6 million in liabilities repricing within one year. This means that $5.9
million more in interest rate  sensitive  assets than  interest  rate  sensitive
liabilities  will  change to the then  current  rate  (changes  occur due to the
instruments  being at a variable rate or because the maturity of the  instrument
requires its replacement at the then current rate). Interest income is likely to
be  affected  to a greater  extent  than  interest  expense  for any  changes in
interest rates during the  Immediately  to Twelve Month  periods.  If rates fall
during this  period,  interest  income  would  decline by a greater  amount than
interest expense and net income would be reduced.  Conversely,  if rates were to
rise, the reverse would apply.





                                       46
<PAGE>




Regulatory Capital Requirements

                  The   following   tables   present  the  capital   ratios  for
Mercantile,  computed in accordance with its applicable  regulatory  guidelines,
compared to the standards for minimum  capital  adequacy,  for  well-capitalized
depository  institutions  and for the  leverage  ratio  requirements  under  the
Memorandum as of December 31, 1996 (dollars in thousands).

<TABLE>
                                                                                       To Be Well
                                                                                     Capitalized Under            Capital
                                                               For Capital           Prompt Corrective         Required Under
                                        Actual              Adequacy Purposes:       Action Provisions:          Memorandum

                                  Amount       Ratio        Amount       Ratio       Amount      Ratio       Amount      Ratio
<S>                               <C>         <C>           <C>          <C>         <C>         <C>        <C>          <C> 
Total Risk-Based Capital (to
   Risk Weighted Assets)          $5,351      15.14%        $2,828       8.0%        $3,535      10.0%         -           -
                                                                                      
Tier I Capital (to Risk
Weighted   Assets)                $4,901      13.86%        $1,414       4.0%        $2,121       6.0%         -           -
                                                            
Tier I Capital (to Average
   Assets)                        $4,901      10.58%        $1,853       4.0%        $2,316       5.0%      $3,474        7.5%

</TABLE>

Shareholdings of Certain Beneficial Owners and Management

          Management of Mercantile knows of no person who owns, beneficially or
of record, either individually or together with associates, five percent or
more of the outstanding shares of Mercantile's common stock, except as set forth
in the table below.  This table also sets forth, as of April 17, 1997, the
number and percentage of shares of Mercantile's outstanding common stock
beneficially owned, directly or indirectly, by each of Mercantile's directors, 
executive officers and principal shareholders, and by the directors and execu-
tive officers of Mercantile as a group.

<TABLE>
                                                                                                     
                                                                                                                              
                                                                                                              
                                    Shares Owned with      Shares Owned with                                    
                                    Sole Voting and        Shared Voting and                              Percent of 
Beneficial Owner                    Investment Power       Investment Power            Total Shares         Class
<S>                                 <C>                        <C>                       <C>                 <C>
_____________________________________________________________________________________________________________________
Directors and Executive Officers:
Robert F. Gaines                    13,500                       5,000                    18,500              5.49%   
Arlen J. Opper                       8,958                           0                     8,958              2.66%
Robert C. Cook                      16,985                           0                    16,985              5.04%
Monte R. Doris                      20,638                           0                    20,638              6.12%
Wesley B. Lasher and Inez Lasher   
Revocable Trust                          0                      17,195                    17,195              5.10%
Denis Long                           7,650                           0                     7,650              2.27%
Total for Directors and Executive 
Officers as a Group:                67,731                      22,195                    89,926             26.69%

Principal Shareholders
Bruce D. Brooks & Betty J. Brooks
Family Revocable Trust
c\o Capitol Oil Corporation
3838 Watt Ave. Sacramento, CA.           0                     104,841                   104,841             31.11%
</TABLE>

                                       47
<PAGE>


                                                SELECTED FINANCIAL DATA

                  The  following  table  presents  selected  financial  data for
Mercantile as of and for each of the five years in the period ended December 31,
1996.  The statements of operations  data and statements of financial  condition
data for each of the  five  years in the  period  ended  December  31,  1996 are
derived from the financial  statements of Mercantile and the notes thereto.  The
information  below is  qualified  in its  entirety by the  detailed  information
included  elsewhere herein and should be read in conjunction with  "Management's
Discussion and Analysis of Financial  Condition and Results of Operations,"  and
the Financial  Statements and Notes thereto included  elsewhere herein.  Average
assets and equity are computed as the average of daily  balances (in  thousands,
except per share amounts).
<TABLE>
                                                                                   At or for the Year Ended
                                                                                         December 31,
                                                                    ---------------------------------
                                                                      1996       1995       1994        1993       1992
                                                                      ----       ----       ----        ----       ----
<S>                                                                <C>        <C>        <C>        <C>         <C>    
Statements of Operations Data
  Total interest income..................................          $  4,047   $   4,461  $   3,687  $   3,379   $   3,449
  Total interest expense.................................             1,689       2,017      1,436      1,320       1,685
                                                                   --------   ---------  ---------  ---------   ---------
  Net interest income....................................             2,358       2,444      2,251      2,059       1,764
  Provision for possible loan losses.....................               428         293        990        122          78
                                                                   --------   ---------  ---------  ---------   ---------
  Net interest income after provision for possible
    loan losses..........................................             1,930       2,151      1,261      1,937       1,686
  Total noninterest income...............................               424         133        126        127         222
  Total noninterest expense..............................             1,698       2,235      1,399      1,391       1,396
  Provision for income taxes.............................               298          26        (23)       220         151
                                                                   --------   ---------  ---------- ---------   ---------

  Net income.............................................          $    358   $      23  $      11  $     453   $     361
                                                                   ========   =========  =========  =========   =========

Statements of Financial Condition Data
  Total assets...........................................          $ 46,376   $  52,265  $  43,603  $  44,819   $  42,156
  Loans, net(1)..........................................            30,801      35,695     33,602     34,801      32,727
  Allowance for possible loan losses.....................             1,092         908      1,035        577         515
  Total deposits.........................................            41,246      47,227     39,459     40,401      38,316
  Shareholders' equity...................................             4,931       4,151      4,026      4,132       3,659

Per Share Data(2)
  Book value.............................................          $  14.64   $   14.65   $  14.20   $  14.58    $  12.91
  Net income:............................................              1.15        0.08       0.04       1.60        1.28

Shares used to compute net income
   per share:............................................               337         283        283        283         283

  Dividend payout ratio (4):.............................               N/A         N/A        N/A        N/A         N/A

Selected Ratios
  Return on average assets...............................              0.74%       0.04%      0.02%      1.04%       0.81%
  Return on average shareholders' equity.................              7.60        0.55       0.27      11.60       10.42
  Net interest margin(3).................................              5.25        5.40       5.48       5.03        4.19
  Average shareholders' equity to average assets.........              9.72        8.56       9.25       8.86        7.76

</TABLE>

                                       48
<PAGE>

<TABLE>
                                                                                   At or for the Year Ended
                                                                                         December 31,
                                                                    ---------------------------------
                                                                      1996       1995       1994         1993        1992
                                                                      ----       ----       ----         ----        ----
<S>                                                                  <C>         <C>        <C>          <C>        <C> 
Asset Quality Ratios
  Allowance for possible loan losses to total loans.........           3.4%       2.5%        3.0%        1.6%        1.5%
  Allowance for possible loan
     losses to nonaccrual loans.............................         176.4       99.3       150.9        55.6       128.8
  Net charge-offs to average loans outstanding..............           0.7        1.2         1.6         0.2         0.2
  Nonaccrual and restructured performing loans to total loans          3.5        4.1         2.6         3.9         1.3
  Nonperforming assets to total assets......................           3.0        3.1         3.2         2.9         2.7


</TABLE>


(1) The term "Loans, net" means total loans less the allowance for possible loan
losses.

(2)      Book  value  per  share is  calculated  as total  shareholders'  equity
         divided by the number of shares outstanding at the end of the period.

(3)       Ratio of net interest income to total average earning assets.

(4)       No cash dividends were paid in the years 1992 through 1996.










                                       49
<PAGE>




- -------------------------------------------------------------------------------
                            MERCANTILE MANAGEMENT'S DISCUSSION AND ANALYSIS OF
- -------------------------------------------------------------------------------
                     FINANCIAL CONDITION AND RESULTS OF OPERATIONS OF MERCANTILE


                  Certain matters discussed or incorporated by reference in this
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 "INVESTMENT
CONSIDERATIONS",  "SUMMARY", "PROPOSAL ONE: THE MERGER - Reasons for the Merger
and Recommendation; Principal Terms of the Merger -- Exchange Amount",
"UNAUDITED PRO FORMA COMBINED FINANCIAL STATEMENTS" and "MERCANTILE  MANAGE-
MENT'S DISCUSSIONAND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
OF  MERCANTILE". Therefore,  the  information  set forth therein should be care-
fully considered when evaluating the business prospects of SierraWest and
Mercantile.

                  The following discussion and analysis is designed to provide a
better   understanding  of  the  significant   changes  and  trends  related  to
Mercantile's  financial  condition,  operating  results,  liquidity  and capital
resources.  The  following  discussion  should be read in  conjunction  with the
Financial Statements of Mercantile and the Notes thereto.

Results of Operations For the Years Ended December 31, 1996, 1995 and 1994

                  Net income  for the year ended  December  31,  1996  increased
1,457% from $23 thousand for 1995 to $358 thousand for 1996 and  increased  109%
for the year ended  December 31, 1995 when  compared to the year ended  December
31,  1994.  Net  income  for  1994 was $11  thousand.  Net  income  for 1995 was
negatively  affected  by an  accrual  for a  potential  operating  loss  of $700
thousand related to an unauthorized overdraft by a customer. Net income for 1994
was  negatively  affected by a higher than  normal loan loss  provision  of $990
thousand relating to potential losses on Mercantile's loans.

                  The following table  summarizes the operating  results for the
years ended December 31, 1996, 1995, and 1994 (dollars in thousands):
<TABLE>

                                             December 31,                     1996 over 1995             1995 over 1994
- ---------------------------------------------------------------------     ----------------------     ------------------
                                    1996         1995         1994        Amount    Percentage(1)    Amount    Percentage(1)
                                    ----         ----         ----        ------    -------------    ------    -------------
<S>                              <C>           <C>          <C>          <C>         <C>             <C>             <C>

Total interest income........... $  4,047      $ 4,461      $ 3,687      $ (414)        (9.3)%       $  774           21.0%
Total interest expense..........    1,689        2,017        1,436        (328)       (16.3)           581           40.5
                                 --------      -------      -------      -------                     ------
Net interest income.............    2,358        2,444        2,251         (86)        (3.5)           193            8.6
Provision for possible
    loan losses.................      428          293          990          135        46.1           (697)         (70.4)
                                 --------      -------      -------      -------                     ------
Net interest income after
    provision for possible
    loan losses.................    1,930        2,151        1,261        (221)       (10.3)           890           70.6
Total other operating income....      424          133          126          291       218.8              7            5.6
Total other operating
    expense.....................    1,698        2,235        1,399        (537)       (24.0)           836           59.8
                                 --------      -------      -------      -------                      -----
Income (loss) before provision
    for taxes...................      656           49          (12)         607     1,238.8             61          508.0
Provision (benefit) for income taxes  298           26          (23)         272     1,046.2             49          213.0
                                 --------      -------      -------      -------    
Net Income...................... $    358      $    23      $    11      $   335     1,456.5         $   12          109.1

                                 ========      =======      =======      =======                     ======
</TABLE>


(1)        Increase (decrease) over previous year's amount.


Net Interest  Income:  Net interest  income is influenced by a number of factors
such as the volume and distribution of interest earning assets, the rate charged
on loans for interest and fees, the rate earned on investments and federal funds
sold and the rate paid for deposits and other liabilities.

                                       50
<PAGE>

The  following  table sets forth,  for the periods  indicated,  a summary of the
changes in interest income and interest expense resulting from changes in volume
and from  changes in rates.  For  purposes of this table,  any change not solely
attributable to volume or rate has been allocated to change due to volume.
<TABLE>

                                                          1996 over 1995                        1995 over 1994
- ---------------------------------------------------------------------------------     ------------------------
                                                  Volume        Rate        Total        Volume       Rate       Total
<S>                                           <C>            <C>         <C>           <C>        <C>         <C>

Increase (Decrease) in Interest Income:
Loans.........................................$       (37)   $   (353)   $    (390)    $      34  $     451   $     485
Investment securities..........................         0           8            8            10         12          22
Federal funds sold.............................        (7)        (27)         (34)          217         37         254
Other deposits.................................         5          (3)           2            (9)        22          13
                                                 --------   ----------   ---------     ---------- ---------  ----------

Total..........................................       (39)       (375)        (414)          252        522         774
                                                 ---------  ----------   ----------    ---------  ---------  ----------

Increase (Decrease) in Interest Expense:
Deposits:
  Transaction accounts.........................        19        (193)        (174)           62         88         150
  Savings accounts.............................        (1)         (4)          (5)            0          0           0
  Certificates of deposits.....................       (72)        (77)        (149)          157        274         431
                                                 ---------  ----------   ----------    ---------  ---------  ----------

Total..........................................       (54)       (274)        (328)          219        362         581
                                                 ---------  ----------   ----------    ---------  ---------  ----------

Increase in net interest income................  $     15   $    (101)   $     (86)    $      33  $     160      $  193
                                                 ========   ==========   ==========    =========  =========      ======
</TABLE>

                  As  disclosed  in the above table  Mercantile's  net  interest
income  increased in 1995 over 1994 and  declined in 1996 over 1995.  The volume
increase in 1995 is  attributable  to an increase in the assets of Mercantile by
10.0% from an average balance of $44.2 million in 1994 to $48.7 million in 1995.
The  increase in assets was caused by an  increase  in average  deposits of $4.0
million most of which was invested in federal funds sold.

                  Average  loans  between  1994  and  1995  remained  relatively
stable,  increasing  only  0.9% in 1995.  Loan  demand  in 1995  was  restrained
following changes to Mercantile's  underwriting  procedures caused by increasing
concerns  over loan  quality.  On August  16,  1995  Mercantile  entered  into a
Memorandum Of Understanding  ("MOU") with the FDIC and the Superintendent  which
among other items required Mercantile to revise its loan policies and procedures
and  to  improve  the   quality  of  its  loan   portfolio.   (See   "INVESTMENT
CONSIDERATIONS   --  Memorandum  of   Understanding"   and  "Information   about
Mercantile")

                  In 1996 the  average  balances  for both  deposits  and  loans
declined slightly from the levels achieved in 1995.

                  Approximately 86% of Mercantile's  loans at December 31, 1995,
were tied to the average  prime rate for leading  banks.  The average prime rate
for 1996 was 8.27%  compared  to 8.83%  for 1995.  This  decrease  equates  to a
negative  rate variance for average loans of $186  thousand.  The  difference of
$186  thousand  between this  calculated  variance and the actual  negative rate
variance of $353  thousand  was due to continued  competitive  pressures on loan
pricing.

                  Price variances for federal funds sold and other deposits were
related to changes in rates between the respective periods.  The duration of the
investment  portfolio has not changed  significantly  between 1994 and 1996. The
rate  variances were related  primarily to changes in prevailing  yields between
the periods.

                  The average prime rate for 1995 was 8.83% compared to 7.13% in
1994. This increase  equates to a positive price variance of $500 thousand.  The
difference of $69 thousand between this calculated variance and the actual price
variance of $451  thousand was due in part to an increase in non accrual  loans,
which  accounted  for  $13  thousand  of the  difference,  and in  part  to more
aggressive pricing of new loans .

                  The average balance and average rate paid on interest  bearing
transaction deposit accounts during 1996 and 1995 are as follows:

                                       51
<PAGE>

<TABLE>

                                                       Year Ended December 31,

                                                1996                               1995
                                       ------------------------------------------------
                                                       Money                             Money
                                           NOW        Market               NOW          Market
<S>                                    <C>           <C>                <C>           <C>    

Average Balance....................    $   3,211     $  11,322          $   2,620     $  11,266
Rate paid..........................        2.15%         3.13%              3.32%         4.54%
</TABLE>


                  The  increase  in  deposits  in 1995  relates to  Mercantile's
posting above market rates for both its interest  bearing  transaction  accounts
and its  CDs.  Average  rate  paid on  transaction  accounts  for  1995 was 4.3%
compared to 3.6% paid in 1994.  The market norm for both periods was in the 2.0%
to 2.5% range.  The average rate paid for CD's in 1995 was 6.2% compared to 4.8%
in 1994. The market norm in 1995 was below 6.0%.

                  A  volume  increase  of  4.7%  in 1996  for  interest  bearing
transaction  accounts was offset by a decrease of 5.7% in CD's. The rate paid in
1996  remained  above the market norm which  continued at the 1995 level of from
2.0% to 2.5% and  accounts for the  continued  increase in these  deposits.  The
average rate paid for CD's  declined  from 6.19% in 1995 to 5.85% in 1996.  This
reflects offering rates that were more in line with market rates for replacement
CD's and accounts for the decline in average CD balances.


Provision for Loan Losses:

                  The following  table sets forth the ratio of the allowance for
possible  loan losses to  nonperforming  loans,  the ratio of the  allowance for
possible  loan  losses to total  loans and the ratio of  nonperforming  loans to
total loans as of the dates indicated.
<TABLE>

                                                                                      December 31,
                                                                             1996         1995        1994
<S>                                                                          <C>          <C>        <C> 

Allowance for possible loan losses to nonperforming assets...................78.6%        56.3%      74.7%
Allowance for possible loan losses to total loans ............................3.4%         2.5%       3.0%
Nonperforming assets to total loans ..........................................4.4%         4.4%       4.0%
</TABLE>

                  In 1996  Mercantile loan losses declined to $244 thousand (net
of  recoveries)  or 0.7%  of  average  loans.  In 1996  Mercantile  revised  its
methodology for calculating its allowance for loan losses to a more conservative
approach which included an allowance  based upon its entire  portfolio  versus a
focus on substandard loans as had been the prior practice.  As a result of these
changes the  allowance  for loan losses was  increased  in 1996 to 3.4% of loans
outstanding.  The provision for 1996 increased to $428 thousand compared to $293
thousand for 1995.

                  The  provision  for loan  losses  in 1995  was  $293  thousand
compared to $990 thousand in 1994.  In response to concerns  raised by the FDIC,
Mercantile  increased its provision for loan losses effective December 31, 1994.
It also  charged  off  additional  loans  in  response  to FDIC  concerns  which
increased  the  total  loans  charged  off for  1994 to  $532  thousand  (net of
recoveries)  or 1.55% of average  loans for 1994.  Additionally,  in early 1995,
Mercantile  revised its procedures for calculation of its allowance for possible
loan  losses  to a  quantitative  analysis  which  was  based on a rating of all
substandard loans. Mercantile then began a process of reducing the amount of its
substandard  loans.  It did this  through  liquidating  collateral  or declining
renewals.

                  While  Mercantile  is  unable to  predict  the  intensity  and
duration of future uncertain economic  conditions it believes that its allowance
for loan losses as of December  31, 1996 was  adequate to provide for  potential
losses inherent in the portfolio at that date.

                  The reduced provision for 1995 reflected  management's  belief
that it had identified  the troubled  loans in 1994 and made adequate  provision
for  them.  At the end of 1994,  the  allowance  was 3.0% of  outstanding  loans
compared with 1.6% at the end of the previous  year. In 1995,  $420 thousand was
charged off (net of recoveries).

                                       52
<PAGE>

Other operating income:

                  The following table summarizes the principal elements of other
operating  income  and  discloses  the  increases  (decreases)  and  percent  of
increases (decreases) for 1996 and 1995 (dollars in thousands):
<TABLE>

                                                                                         Increase (Decrease)
                                         Year Ended December 31,             1996 over 1995           1995 over 1994
                                    1996         1995         1994        Amount     Percentage      Amount      Percentage
<S>                               <C>           <C>          <C>          <C>              <C>       <C>       <C>

Service charges.................. $    79       $  114       $  107       $  (35)          (30.7)%   $    7       6.5%
Securities (losses)/gains........       4            0            1            4            -            (1)   (100.0)
Net gain on sale of SBA loans....      68            0            0           68            -             0         -
Net gain on sale of other real estate  18            0            0           18            -             0         -
Recovery against 1995 overdraft loss  200            0            0          200            -             0         -
Other income.....................      55           19           18           36           189.4          1       5.6
                                  -------       ------       ------       ------                     ------

                                  $   424       $  133       $  126       $  291           218.8%    $    7       5.6%
                                  ========      ======       ======       ======                     ====== 
</TABLE>


                  The decline in service charges to customers'  accounts between
1995 and 1996 was due to lower  collections  on overdrafts in 1996 than in 1995.
Mercantile  tightened its controls over  overdrafts in 1996 and this resulted in
lower overdraft penalties.

                  In 1996 Mercantile sold the guaranteed portion of one SBA loan
at a  premium  and  recorded  a gain on the sale of $68  thousand.  There are no
additional planned sales of SBA loans. Additionally,  Mercantile sold other real
estate  owned  in 1996  and  realized  a gain  over  the  carrying  value of $18
thousand.

                  In 1995  Mercantile  incurred a loss of $700  thousand from an
unauthorized  customer  overdraft.   The  customer  made  payments  against  its
obligation to Mercantile of $200 thousand in 1996 and $40 thousand through March
1,  1997.  While  there  can be no  guarantee  of  further  payments  Mercantile
anticipates that further repayments will be received.

                  The  increase in other  income of $36 thousand in 1996 was due
to reimbursement by the SBA of its share of expenses relating to the liquidation
of an SBA loan which expense had been charged against income for 1995.

Other operating expense:

                  The  following   table  computes  the  ratio  of  major  other
operating expense categories to total average assets (dollars in thousands):
<TABLE>

                                                            Salaries              Occupancy
                                                               and                   and                  Other
               Year Ended              Average               Related              Equipment             Operating
              December 31,             Assets              Benefits(1)            Expenses              Expenses
                  <S>                 <C>                      <C>                 <C>                  <C>                      
                  1996                $48,429                  1.65%               .42%                 1.44%
                  1995                 48,680                  1.58                .31                  2.71
                  1994                 44,249                  1.66                .34                  1.16
</TABLE>

(1)        Excludes profit sharing payments.  Including this item, percentages
           would be 1.77%, 1.78% and 1.88% for the years ended December 31,
           1996, 1995 and 1994, respectively.

                  Salaries and related expenses  increased between 1994 and 1996
at a rate that approximated the rate of inflation. The decline in the percentage
of salaries and related benefits to average assets between 1994 and 1995 was due
to the increase in average assets.

                  The increase in occupancy  and  equipment  expense in 1996 was
caused by additional  depreciation for data processing equipment related to a PC
banking product that Mercantile introduced for its customers.

                  The  following  table  summarizes  the  principal  elements of
operating  expenses  and  discloses  the  increases  (decreases)  and percent of
increases (decreases) for 1996 and 1995 (dollars in thousands):



                                       53
<PAGE>
<TABLE>
                                                                                         Increase (Decrease)
                                         Year Ended December 31,             1996 over 1995           1995 over     1994
                                    1996         1995         1994        Amount     Percentage      Amount     Percentage
<S>                              <C>           <C>          <C>          <C>              <C>       <C>              <C>

Salaries and related benefits..  $    797      $   767      $   734      $    30             3.9%   $    33            4.5%
Occupancy and equipment........       202          150          150           52            34.7          0            0
Insurance......................        51           44           45            7            15.9         (1)          (2.2)
Postage........................        16           18           14           (2)          (11.1)         4           28.6
Stationery and supplies........        45           44           46            1             2.3         (2)          (4.3)
Telephone......................        12           10            9            2            20.0          1           11.1
Legal fees.....................        62          104           18          (42)          (40.4)        86          477.8
Audit and accounting fees......        61           68           15           (7)          (10.3)        53          353.3
Directors' fees and expenses...        33           36           25           (3)           (8.3)        11           44.0
FDIC assessments...............         9           53           92          (44)          (83.0)       (39)         (42.4)
OREO expense...................       326          163          118          163           100.0         45           38.1
Overdraft loss.................         0          700            0         (700)         (100.0)       700           --
Other..........................        84           78          133            6             7.7        (55)         (41.4)
                                 --------      -------      -------      -------                    --------

                                  $ 1,698      $ 2,235      $ 1,399      $  (537)          (24.0)%  $   836           59.8%
                                  =======      =======      =======      ========                   =======
</TABLE>

                  Insurance cost increases in 1996 related to increased property
insurance on OREO.

                  The  increase in the legal fees for 1995  versus 1994  related
primarily to collection  costs for loans in liquidation and development of OREO.
Legal  fees of $28  thousand  incurred  in 1996  related  to the  $700  thousand
unauthorized customer overdraft discovered in late 1995.

                  Audit and  accounting  expenses  increased  in 1995 because of
work done by Mercantile's  external  auditors in investigating  the unauthorized
customer overdraft. In 1996, Mercantile employed an external loan review firm to
conduct comprehensive loan reviews.

                  OREO  expenses   included   costs   associated   with  a  land
development  project of $70  thousand,  $120 thousand and $42 thousand for 1994,
1995 and 1996 respectively.  This property was disposed of by December, 1996. In
1996 Mercantile  provided $205 thousand as a reserve for a decline in the market
value of its  OREO  properties.  OREO  expenses  without  these  items  were $48
thousand, $43 thousand and $79 thousand for 1994, 1995 and 1996 respectively.

                  The  $700  thousand  Overdraft  loss  was  the  result  of  an
unauthorized customer overdraft.

Provision for income taxes:

                  Mercantile's provision for income taxes was an expense of $298
thousand  in 1996 and $26  thousand  in 1995,  and a benefit of $23  thousand in
1994. The effective  income tax rate was 45.4% in 1996 as compared with 52.9% in
1995 and  (188.5%)  in 1994.  See  Footnote  8 of the  Mercantile  1996  audited
financial  statements  included in this Proxy  Statement/Prospectus  for further
discussion of the change in the provision for income taxes.

Liquidity and  Financial Condition

                  Liquidity refers to Mercantile's  ability to maintain adequate
cash flows to fund operations and meet  obligations  and other  commitments on a
timely basis. Mercantile's liquidity management policies are structured so as to
maximize  the  probability  of funds being  available to meet present and future
financial obligations and to take advantage of business opportunities. Financial
obligations  arise from  withdrawals  of  deposits,  repayment  on  maturity  of
purchased  funds,  extensions  of loans or other  forms of credit,  purchase  of
loans,  payment of interest on deposits  and  borrowings,  payment of  operating
expenses, and capital expenditures.

                                   54
<PAGE>
                  Mercantile  has various  sources of  liquidity.  Increases  in
liquidity  result from the  maturity or sale of assets.  Other than cash itself,
short-term  investments  such as federal funds sold are the most liquid  assets.
Also,  investment securities available for sale can be sold prior to maturity as
part of prudent  asset/liability  management  in response to changes in interest
rates and/or  prepayment risk as well as to meet liquidity needs.  Additionally,
liquidity  is provided by loan  repayments.  Deposits  such as demand  deposits,
savings  deposits and retail time  deposits  also provide a source of liquidity.
They tend to be stable sources of funds.  Mercantile maintains an adequate level
of cash and cash  equivalents to meet its day-to-day  needs and in addition,  at
December 31, 1996,  Mercantile  had an unsecured  line of credit  totaling  $1.5
million with a correspondent bank.

                  Cash and due from banks and federal funds sold as a percentage
of total  deposits  were 20.9% at  December  31,  1996 as  compared  to 20.2% at
December 31, 1995.  Cash and due from banks totaled $3.8 million at December 31,
1996 as compared to $3.1 million at December 31,  1995,  and federal  funds sold
totaled  $4.9  million at  December  31,  1996 as  compared  to $6.5  million at
December 31, 1995.  Federal funds sold represent  overnight  deposits with major
banks and are predominantly  uninsured.  The uninsured portion of these deposits
together with the uninsured  portion of cash deposited  with other  institutions
totaled $4.7  million as of December 31, 1996.  In the event of a failure of any
of these institutions, Mercantile could lose all or part of its deposits.

                  Mercantile  increased  its CD  deposits  with other  financial
institutions  from $1.2 million at December 31, 1995 to $1.5 million at December
31,  1996.  All of these  deposits  are covered by FDIC  insurance.  Longer term
liquidity is provided by Mercantile's investment portfolio. At December 31, 1996
Mercantile  held $3.5 million in U.S.  Government  obligations  compared to $3.7
million at December 31, 1995.

                  Loans  outstanding  at December 31, 1996  declined by 13.1% or
$4.8 million to $32.0 million compared to loans  outstanding of $36.8 million at
December 31, 1995. Of the decline $3.7 million was in real estate loans.  During
1996  Mercantile  continued a program to improve on the  overall  quality of its
portfolio. It declined to renew a number of loans which no longer met its credit
standards.   Additionally   Mercantile  continued  to  apply  more  conservative
standards to new lending  opportunities.  These factors combined with increasing
competition for loans in Mercantile's  marketplace contributed to the decline in
outstanding loans.

                  Mercantile's  deposits  declined  by  12.7%  or  $6.0  million
between  December  31, 1995 and 1996.  Deposits at December  31, 1996 were $41.2
million  compared to $47.2 million at December 31, 1995.  Money market  accounts
declined by $3.6 million or 28.4% to $9.2 million  between  these dates and CD's
declined by $3.2 million or 13.9% to $19.7 million. The declines in money market
accounts and CD's relate to reductions in rates paid on these products.

                  Other  liabilities  at December  31,  1996 were $199  thousand
compared to $887  thousand  at December  31,  1995.  At December  31, 1995 other
liabilities included an accrual of $700 thousand for a potential loss associated
with an unauthorized  overdraft.  The related overdraft was included in loans at
December 31, 1995. The accrual was offset against the related overdraft in 1996.

Capital Resources

                  At December 31, 1996,  Mercantile had shareholders'  equity of
$4.9 million as compared to $4.2 million at December 31, 1995.  Between December
31, 1992 and December 31, 1996  Mercantile's  capital grew at a compound  annual
rate of 7.7%.  The growth in capital came  primarily from earnings of Mercantile
and the exercise of stock options.  In 1996,  53,600 shares were issued pursuant
to the exercise of stock options for $430 thousand.

                  Between  December 31, 1992 and December 31, 1995  Mercantile's
total assets grew at a compound  annual rate of 7.4% to $52.2  million.  Between
December 31, 1995 and December  31, 1996 total  assets  declined  11.3% to $46.4
million.  Throughout this period Mercantile's regulatory capital levels remained
above well capitalized levels as defined by Mercantile's regulators.

                  On January  23,  1997  Mercantile  entered  into a  definitive
agreement,  subject to regulatory  and  shareholder  approval,  with  SierraWest
providing for a merger of Mercantile with and into SierraWest's bank subsidiary,
SierraWest  Bank,  for cash and stock equal to $6.6 million,  subject to certain
possible adjustments. (See "PROPOSAL ONE: THE MERGER".)

                                   55
<PAGE>

                  No  dividends  have been paid over the past five  years and no
dividends are projected to be paid in the future.  The Memorandum,  currently in
place, prohibits the payment of dividends unless approved in advance by the FDIC
and the Superintendent.





                                       56
<PAGE>

                                 DESCRIPTION OF SIERRAWEST CAPITAL STOCK
General

                  The  authorized  capital  stock  of  SierraWest   consists  of
10,000,000  shares of common  stock,  no par  value,  and  10,000,000  shares of
preferred  stock,  including  200,000  shares of Series A  preferred  stock.  At
December 31, 1996,  SierraWest  had  $8,520,000 of debentures  convertible  into
852,000  shares of  SierraWest  common  stock.  At this same  date,  there  were
2,771,139  shares  of  SierraWest  common  stock  outstanding  and no  shares of
preferred stock or Series A preferred stock outstanding.  Also, as of such date,
options to acquire 392,959 shares of SierraWest common stock had been issued and
were outstanding,  and an additional 375,000 shares of the authorized SierraWest
common  stock  were  available  for grant  under  the 1996  Stock  Option  Plan.
SierraWest has also reserved  150,000 shares for issuance in connection with its
Deferred Compensation and Stock Award Plan.

Common Stock

                  Holders of  SierraWest  Common  Stock are entitled to one vote
for  each  share  held  of  record  on  all  matters  submitted  to  a  vote  of
shareholders.  Shareholders  have the  right to  cumulate  their  votes  for the
election  of  directors.  Shareholders  are  entitled  to receive  ratably  such
dividends as may be legally declared by SierraWest's  Board of Directors.  There
are legal and  regulatory  restrictions  on the ability of SierraWest to declare
and pay dividends.  See "MARKET PRICE AND DIVIDEND INFORMATION." In the event of
a  liquidation,  shareholders  are  entitled  to  share  ratably  in all  assets
remaining  after  payment of  liabilities.  Shareholders  have no  preemptive or
conversion  rights.  Shares are not subject to further call or  assessment.  The
transfer agent and registrar for  SierraWest  Common Stock is American Stock
Transfer and Trust Company.


Preferred Stock

                  The Board of Directors of  SierraWest is authorized to fix the
preferences,  limitations,  relative rights,  qualifications and restrictions of
the preferred  stock and may establish  series of preferred  stock and determine
the variations  between series.  If and when any preferred stock is issued,  the
holders of  preferred  stock may have a preference  over  holders of  SierraWest
Common Stock upon the payment of dividends,  upon liquidation of SierraWest,  in
respect  of  voting  rights  and  in the  redemption  of the  capital  stock  of
SierraWest.

                  With respect to  SierraWest's  Series A preferred  stock,  see
"Certain Differences in Rights of Shareholders - Shareholders Protection Plan."

Convertible Debentures

                  On February 8, 1994, SierraWest sold to the public $10,000,000
of 8 1/2%  optional  convertible  subordinated  debentures,  convertible  at the
option of the holder at $10.00 per share. These debentures mature on February 1,
2004 and are  redeemable on or after February 1, 1997 in whole or in part at the
option of SierraWest.


                  As of April 16, 1997 the  outstanding  balance had been
reduced to $3,669,000, as a result of voluntary conversions into common stock.


                                       57
<PAGE>
                     DESCRIPTION OF MERCANTILE CAPITAL STOCK

                  The  authorized  capital  stock  of  Mercantile   consists  of
1,000,000 shares of Mercantile  common stock, no par value and 1,000,000 shares
of Mercantile preferred stock.  As of April 17, 1997, there were 336,980 shares 
of Mercantile common stock outstanding.  No shares of Mercantile preferred stock
have been issued or are outstanding.


                  Holders of  Mercantile  common  stock are entitled to one vote
for  each  share  held  of  record  on  all  matters  submitted  to  a  vote  of
shareholders,  except that shareholders may cumulate their votes in the election
of directors. Shareholders are entitled to receive ratably such dividends as may
be legally  declared by  Mercantile's  Board of  Directors.  There are legal and
regulatory  restrictions  on the  ability  of  Mercantile  to  declare  and  pay
dividends.  See  "MARKET  PRICE  AND  DIVIDEND  INFORMATION."  In the event of a
liquidation,  shareholders are entitled to share ratably in all assets remaining
after  payment of  liabilities.  Shareholders  have no  preemptive or conversion
rights. Shares are not subject to further call or assessment, except as provided
in Section 662 of the  California  Banking Law. The transfer agent and registrar
for Mercantile common stock is U.S. Stock Transfer Corporation.



                    CERTAIN DIFFERENCES IN RIGHTS OF SHAREHOLDERS

General

                  SierraWest  is  incorporated  under  and  subject  to all  the
provisions  of  the  General  Corporation  Law  of  California.   Mercantile  is
incorporated  under  and  subject  to all of the  provisions  of the  California
Banking Law and  substantially  all of the provisions of the California  General
Corporation Law. Upon consummation of the Merger,  except for those persons,  if
any,  who  dissent  from the  Merger  and  perfect  appraisal  rights  under the
California Law or receive all cash in the Merger, the shareholders of Mercantile
will become shareholders of SierraWest.

                  The  following  is  a  general   discussion  of  the  material
differences  between the rights of SierraWest  shareholders under the SierraWest
Articles  and  Bylaws  and the  rights  of  Mercantile  shareholders  under  the
Mercantile Articles and Bylaws and applicable California law.


Declaration of Dividends


                  Under  California Law, the directors of SierraWest may declare
and pay  dividends  upon the shares of its capital  stock  either (i) out of its
retained  earnings,  or (ii) out of capital,  provided the company would,  after
making the  distribution,  meet two conditions,  which  generally  stated are as
follows:  (i)  the  corporation's  assets  must  equal  at  least  125%  of  its
liabilities;  and (ii) the corporation's  current assets must equal at least its
current  liabilities  or, if the average of the  corporation's  earnings  before
taxes on income and before interest  expense for the two preceding  fiscal years
was less than the average of the corporation's  interest expense for such fiscal
years,  then the  corporation's  current  assets must equal at least 125% of its
current liabilities.

                  Under  the  California  Banking  Law,  Mercantile  may  pay  a
dividend  equal to its  retained  earnings or its net income from the last three
years, less any dividends paid during such period, whichever is less, or, with
the prior approval of the Superintendent, it may pay dividends up to the 
greatest of its retained  earnings,  its net income for its last fiscal year or 
its net income for its current  fiscal  year.  The Memorandum, currently in 
place, prohibits the payment of dividends unless approved by the FDIC and the
Superintendent.

                                       58
<PAGE>

Assessability of Shares

                  The  shares of  SierraWest  common  stock  are fully  paid and
nonassessable. Under the California Banking Law, the shares of Mercantile common
stock are subject to  assessment  by the  Superintendent  if the  Superintendent
determines that its capital is impaired.  A bank's capital is impaired  whenever
it has deficit retained earnings  exceeding 40% of its contributed  capital.  An
assessment  creates a lien on the shares,  and the shares may not be transferred
until the assessment has been satisfied.  In case of assessment,  the holder has
no  personal  liability,  but the shares  are  subject  to  involuntary  sale or
forfeiture if the assessment plus a 5% penalty is not paid within 60 days of the
date it is levied.

Cumulative Voting

                  Shareholders of both SierraWest and Mercantile are entitled to
cumulate their votes for the election of directors.  Cumulative  voting allows a
shareholder  to cast a number of votes  equal to the number of  directors  to be
elected multiplied by the number of shares held in the shareholder's name on the
record  date.  This total  number of votes may be cast for one nominee or may be
distributed among as many candidates as the shareholder  desires. The candidates
(up to the number of directors to be elected)  receiving  the highest  number of
votes are elected.

                  A California  corporation that is a "listed  corporation" may,
by amending its articles or bylaws,  eliminate  cumulative voting for directors.
Because  SierraWest's  common stock is quoted on the Nasdaq National Market,  it
qualifies as a listed  corporation.  Such an amendment  requires the approval of
holders of a majority of the  outstanding  shares of  SierraWest  common  stock.
SierraWest  has no present plan to propose an amendment to eliminate  cumulative
voting.

Classified Board of Directors

                  At present,  the SierraWest  Bylaws and the Mercantile  Bylaws
provide  directors will be elected for a one-year term at each annual meeting of
shareholders.  A California  corporation that is a "listed  corporation" may, by
amending its articles or bylaws,  provide for a staggered or classified Board of
Directors.  Such an amendment  requires the approval of holders of a majority of
the outstanding  shares of SierraWest  common stock.  Because  SierraWest common
stock  is  quoted  on the  Nasdaq  National  Market,  it  qualifies  as a listed
corporation.  SierraWest  has no present plan to propose an amendment to provide
for a classified Board of Directors.

Dissenters' Rights in Mergers and Other Reorganizations

                  Under California  Corporation Law, a dissenting shareholder of
a corporation  participating in certain business combinations may, under varying
circumstances, receive cash in the amount of the fair market value of his or her
shares in lieu of the  consideration he or she would otherwise receive under the
terms of the  transaction.  The  California  Corporation  Law generally does not
require   dissenters'   rights  of  appraisal  with  respect  to  shares  which,
immediately  prior to the  merger,  are (i)  listed on any  national  securities
exchange   certified  by  the  Commissioner  or  (ii)  listed  on  the  list  of
over-the-counter  margin  stock  issued by the FRB.  SierraWest  common stock is
listed  on the  list  of  over-the-counter  margin  stocks  issued  by the  FRB.
SierraWest  shareholders  generally  have  more  limited  dissenters'  rights in
connection  with  business   combinations   than  do  Mercantile   shareholders.
Dissenters'  rights  are not  available  to the  shareholders  of a  corporation
surviving a merger if no vote of the  shareholders of the surviving  corporation
is required.  Dissenters' rights are not available to shareholders of a Califor-
nia bank if the bank is a surviving bank in a merger of banks.


Shareholders Protection Plan

                  In  December  1995,  the  Board  of  Directors  of  SierraWest
declared a dividend of one preferred  share  purchase right (a "Right") for each
outstanding  share of common stock. Each Right entitles the registered holder to
purchase  from  SierraWest  one  one-hundredth  of a share of Series A Preferred
Stock,  no par value (the "Preferred  Shares"),  of SierraWest at a price of $40

                                   59
<PAGE>
per one  one-hundredth of a Preferred Share (the "Purchase  Price"),  subject to
adjustment.

                  Initially,  the Rights will be  attached  to all  certificates
representing  common shares then  outstanding  or later issued.  The Rights will
separate from the common shares and a Stock Acquisition Date will occur upon the
earlier of (i) 10 days following a public announcement that a person or group of
affiliated or associated  persons have acquired  beneficial  ownership of 10% or
more of the  outstanding  common shares (other than a person or such a group who
obtains the prior  written  approval of the Board of Directors)  (an  "Acquiring
Person"),  or (ii) 10  business  days (or  later as  determined  by the Board of
Directors)  following the  commencement  of, or  announcement of an intention to
make, a tender offer or exchange offer the consummation of which would result in
the beneficial ownership by a person or group of 10% or more of such outstanding
common shares (unless SierraWest's Board of Directors has approved the offer).

                  Until  the  Stock   Acquisition   Date,  the  Rights  will  be
transferred  with  and only  with  the  common  shares.  As soon as  practicable
following the Stock  Acquisition  Date,  separate  certificates  evidencing  the
Rights ("Right  Certificates") will be mailed to holders of record of the common
shares.  The Rights are not exercisable  until the Stock  Acquisition  Date. The
Rights will expire on January 16, 2006 (the "Final Expiration Date"), unless the
Rights  are  earlier  redeemed  or  exchanged  by  SierraWest,  in each  case as
described below. The Purchase Price payable,  and the number of Preferred Shares
or other  securities  or  property  issuable,  upon  exercise  of the Rights are
subject to adjustment from time to time under certain  circumstances  to prevent
dilution.  Because of the nature of the Preferred Shares' dividend,  liquidation
and voting rights,  the value of the one  one-hundredth  interest in a Preferred
Share  purchasable  upon exercise of each Right should  approximate the value of
one common share.

                  Following a Stock  Acquisition  Date,  each holder of a Right,
other  than  Rights  beneficially  owned  by an  Acquiring  Person  (which  will
thereafter  be void),  will  thereafter  have the right to receive upon exercise
that  number of common  shares  (or,  in the event that  there are  insufficient
authorized common shares,  substitute  consideration such as cash, property,  or
other  securities of SierraWest,  such as Preferred Stock) having a market value
of two times the exercise  price of the Right.  In the event that  SierraWest is
acquired in a merger or other business combination transaction or 50% or more of
its  consolidated  assets or earning power are sold, each holder of a Right will
have the  right  to  receive,  upon the  exercise  thereof  at the then  current
exercise  price of the  Right,  that  number of  shares  of common  stock of the
acquiring company which at the time of such transaction will have a market value
of two times the exercise price of the Right.

                  At any time  after  the  acquisition  by a person  or group of
affiliated or associated  persons of beneficial  ownership of 10% or more of the
outstanding  common shares and prior to the  acquisition by such person or group
of 50% or more of the  outstanding  common  shares,  the Board of  Directors  of
SierraWest  may exchange  the Rights  (other than Rights owned by such person or
group which have become void),  in whole or in part, at an exchange ratio of one
common  share,  or one  one-hundredth  of a Preferred  Share (or of a share of a
class or  series of  SierraWest's  preferred  stock  having  equivalent  rights,
preferences and privileges), per Right (subject to adjustment).

                  At any time before a person becomes an Acquiring  Person,  the
Board of  Directors  of  SierraWest  may redeem the Rights in whole,  but not in
part,  at a price of  $0.001  per  Right  (the  "Redemption  Price").  After the
redemption  period  has  expired,  SierraWest's  rights  of  redemption  may  be
reinstated  if, prior to  completion  of certain  recapitalizations,  mergers or
other  business  combinations,   an  Acquiring  Person  reduces  its  beneficial
ownership to less than 10% of the outstanding  common shares in a transaction or
series of transactions not involving SierraWest.  The terms of the Rights may be
amended by the Board of  Directors  of  SierraWest  without  the  consent of the
holders  of the  Rights,  except  that  from and after  such time as any  person
becomes an Acquiring Person no such amendment may adversely affect the interests
of the holders of the Rights.

                  A copy of the Rights Agreement  describing the Rights has been
filed  with the  Commission  as an  exhibit  to a Form 8-K. A copy of the Rights
Agreement is available free of charge from SierraWest.  This summary description
of the Rights does not purport to be complete  and is  qualified in its entirety
by reference to the Rights  Agreement,  which is hereby  incorporated  herein by
reference.

                  Mercantile has not adopted any shareholders protection plan.


                                       60
<PAGE>

Limitation of Directors' Monetary Liability

                  The  SierraWest   articles  of  incorporation   eliminate  the
liability of directors of SierraWest for monetary  damages to the fullest extent
permissible  under  California  law.  Applicable  law generally  does not permit
elimination  of monetary  liability for acts arising out of gross  negligence or
willful  misconduct or from which the director derived a personal  benefit.  The
Mercantile  articles of  incorporation  do not  currently  provide for a similar
limitation on directors' monetary liability.


                                  MARKET PRICE AND DIVIDEND INFORMATION



Market Quotations

                  SierraWest  common  stock is  quoted  on the  Nasdaq  National
Market under the symbol SWBS. As of April 16, 1997, there were 943 shareholders
of record, although management believes there are approximately 2,200 beneficial
holders of SierraWest common stock.

                  Mercantile's  common  stock is privately traded.  At April 17,
1997,  management  believes there were  approximately  113 holders of Mercantile
common stock.  There are limited and sporadic  quotations for Mercantile  common
stock and consequently there is no established public trading market. The actual
high and low sale  prices of  Mercantile's  common  stock of which  Mercantile's
management has knowledge are shown below.

                  The following  table sets forth for  SierraWest  common stock,
the high and low sale prices, as reported on the Nasdaq National Market, and for
actual sales  reported to  Mercantile  by various  sources,  but not verified by
Mercantile.

<TABLE>

           
                                                  SierraWest                           Mercantile
                                                 Common Stock                         Common Stock
                                     ----------------------------------    ----------------------------------
                                             High              Low                  High             Low
                                      ----------------- ----------------   ----------------- ----------------
           <S>                              <C>               <C>                    <C>            <C> 
           
           1995
           First Quarter                    $9.25             $7.50                      *              *
           Second Quarter                    9.50              8.25                  $8.00          $8.00
           Third Quarter                    11.25              8.25                  10.00           8.00
           Fourth Quarter                   12.00             10.50                      *              *
           
           1996
           First Quarter                    13.13             10.63                   8.00           8.00
           Second Quarter                   15.38             12.50                   8.25           8.00
           Third Quarter                    15.00             12.88                      *              *
           Fourth Quarter                   15.75             14.13                      *              *
           
           1997
           First Quarter                    19.63             15.38                   9.00           8.00
           Second Quarter (through                                                                       
           April 16, 1997)                  18.25             17.50                      *              *
</TABLE>

       *Mercantile is unaware of any sales occurring in this quarter.


      
                                       61
<PAGE>
                  The  following  table sets forth the per share cash  dividends
declared by SierraWest  and by  Mercantile  during each quarter since January 1,
1995.
<TABLE>

                                                          SierraWest        Mercantile
                                                     ----------------- ----------------
                              <S>                               <C>                <C> 
                            
                              1995
                              First Quarter                     $.12               --
                              Second Quarter                     --                --
                              Third Quarter                     $.12               --
                              Fourth Quarter                     --                --
                             
                              1996
                              First Quarter                      --                --
                              Second Quarter                    $.15               --
                              Third Quarter                     $.15               --
                              Fourth Quarter                     --                --
                             
                              1997
                              First Quarter                     $.16               --
                              Second Quarter (through
                              April 16, 1997)                    --                --
</TABLE>  
                         
                  SierraWest's Board of Directors will consider the advisability
and amount of proposed  dividends each year. Future dividends will be determined
in light of SierraWest's  earnings,  financial condition,  future capital needs,
regulatory  requirements  and such other  factors as the Board of Directors  may
deem relevant.  SierraWest's primary source of funds for payment of dividends to
its  shareholders  will be the receipt of  dividends  from its  subsidiary.  The
payment  of  dividends  by banks is  subject  to  various  legal and  regulatory
restrictions.

                                                 EXPERTS


                  The  consolidated  financial  statements  incorporated in this
Proxy  Statement/Prospectus by reference from SierraWest Bancorp's Annual Report
on Form 10-K for the year ended December 31, 1996, have been audited by Deloitte
& Touche  LLP,  independent  auditors,  as  stated in their  reports,  which are
incorporated herein by reference, and have been so incorporated in reliance upon
the reports of such firm given upon their authority as experts in accounting and
auditing.

                  The financial statements of Mercantile as of December 31, 1996
and 1995 and for  each of the  three  years in the  period  ended  December  31,
1996, included in this Proxy Statement/Prospectus, have been audited by KPMG 
Peat Marwick LLP, independent  auditors,  as stated in their reports which is
included 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 
report on the 1995  financial  statements  of  Mercantile  Bank  reflected the 
adoption of the Financial Accounting Standards Board's Statement of Financial  
Accounting Standards No. 114, "Accounting by Creditors for Impairment of a 
Loan", as amended by Statement No. 118, "Accounting by Creditors for Impairment 
of a Loan - Income Recognition and Disclosures". Representatives of KPMG Peat
Marwick LLP will be present at the Mercantile  Meeting and will have the oppor-
tunity to make a  statement if they wish and will be available to respond to 
appropriate questions.

CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL
DISCLOSURE

                  Since  January  1,  1995  there  have been no  changes  in and
Mercantile's  management  has had no  disagreements  on accounting and financial
disclosures with Mercantile's auditors.

                                       62
<PAGE>

                                LEGAL MATTERS

                  Certain  legal matters with respect to  SierraWest,  including
the validity of the SierraWest  common stock to be issued in connection with the
Merger, will be passed upon for SierraWest by McCutchen, Doyle, Brown & Enersen,
LLP, San Francisco, California. Certain legal matters with respect to Mercantile
will be passed upon by Lillick & Charles, LLP, San Francisco, California.


                                 OTHER MATTERS

                  The Board of Directors of Mercantile  know of no other matters
which will be brought  before the  Meeting,  but if such  matters  are  properly
presented to the Meeting,  proxies solicited hereby relating to the Meeting will
be voted in  accordance  with the judgment of the persons  holding such proxies.
All shares represented by duly executed proxies will be voted at the appropriate
Meeting.

                  A copy of  SierraWest's  Annual  Report  on Form  10-K for the
fiscal   year   ended    December    31,    1996,    accompanies    this   Proxy
Statement/Prospectus.  An additional copy can be obtained without charge (except
for certain exhibits) by contacting David Broadley, EVP/Chief Financial Officer,
SierraWest Bancorp,  10181  Truckee-Truckee  Airport Road,  Truckee,  California
96160, telephone 916-582-3000.

                                       63
<PAGE>

- ---------------------------------------------------------------------------

- ---------------------------------------------------------------------------

                                             MERCANTILE BANK

                                           Financial Statements

                                        December 31, 1996 and 1995

                               (With Independent Auditors' Report Thereon)




                                       64
<PAGE>



(Letterhead of KPMG Peat Marwick LLP)





                                       Independent Auditors' Report

The Board of Directors
Mercantile Bank:

We have audited the accompanying balance sheets of Mercantile Bank as of
December 31, 1996 and 1995, and the related statements of income,  stockholders'
equity, and cash flows for the years then ended. 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 audit 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 Mercantile Bank as of December
31, 1996 and 1995 and the results of its  operations  and its cash flows for the
years then ended in conformity with generally accepted accounting principles.

As discussed in Note 1 to the financial statements,  the Bank changed its method
of  accounting  for  impaired  loans  in 1995 to  adopt  the  provisions  of the
Financial   Accounting  Standards  Board's  Statement  of  Financial  Accounting
Standards No. 114,  Accounting by Creditors for Impairment of a Loan, as amended
by Statement No. 118,  Accounting  by Creditors for  Impairment of a Loan-Income
Recognition and Disclosures.



/S/ KPMG Peat Marwick LLP


February 21, 1997






                                       65
<PAGE>




- -------------------------------------------------------------------------------
<TABLE>
                                                      
                                              MERCANTILE BANK
                                               Balance Sheets
                                         December 31, 1996 and 1995



                              Assets                                                1996                 1995
- -------------------------------------------------------------------------------------------------------------
<S>                                                                        <C>                        <C>   

Cash and due from banks (note 2)                                           $       3,768,394           3,066,984
Federal funds sold                                                                 4,855,000           6,473,000
Certificates of deposit with banks                                                 1,486,000           1,189,000
Investment securities available for sale, at fair value
    (note 3)                                                                       3,506,883           3,653,300
Loans, net (note 4)                                                               30,800,715          35,695,073
Other real estate owned                                                              770,000             700,000
Bank premises and equipment, net (note 5)                                            123,080             122,893
Accrued interest receivable and other assets                                       1,065,982           1,364,429
                                                                             ---------------      --------------
         Total assets                                                      $      46,376,054          52,264,679
                                                                             ===============      ==============


               Liabilities and Stockholders' Equity
Liabilities:
   Deposits (note 6):
      Noninterest bearing                                                  $       8,368,276           8,076,800
      Interest bearing                                                            32,877,933          39,149,869
                                                                             ---------------      --------------
         Total deposits                                                           41,246,209          47,226,669
   Accrued interest payable and other liabilities                                    198,506             886,690
                                                                             ---------------      --------------

         Total liabilities                                                        41,444,715          48,113,359
                                                                             ---------------      --------------
Stockholders' equity (note 7):
   Common stock - no par value; authorized 1,000,000
       shares, issued and outstanding 336,980 and 283,380
       shares in 1996 and 1995, respectively                                       1,750,820           1,472,150
   Additional paid-in capital                                                      1,093,192             941,737
   Unrealized (loss) gain on investment securities, net
       (notes 3 and 8)                                                                (2,492)              5,645
   Retained earnings (note 11)                                                     2,089,819           1,731,788
                                                                             ---------------      --------------
         Total stockholders' equity                                                4,931,339           4,151,320
                                                                             ---------------      --------------
Commitments and contingencies (note 10)
         Total liabilities and stockholders' equity                        $      46,376,054          52,264,679
                                                                             ===============      ==============
</TABLE>

See accompanying notes to financial statements.


                                       66
<PAGE>



<TABLE>

                                              MERCANTILE BANK
                                            Statements of Income
                                   Years Ended December 31, 1996 and 1995



                                                                                    1996                 1995
- -------------------------------------------------------------------------------------------------------------
<S>                                                                           <C>                      <C> 

Interest income:
   Loans including fees                                                       $   3,457,149            3,847,492
   Investment securities                                                            220,324              211,746
   Certificates of deposit in banks                                                  72,557               70,651
   Federal funds                                                                    296,981              331,411
                                                                                -----------         ------------
         Total interest income                                                    4,047,011            4,461,300
Interest expense on deposits                                                      1,689,196            2,017,274
                                                                                -----------         ------------
         Net interest income                                                      2,357,815            2,444,026
Provision for loan losses (note 4)                                                  427,967              293,265
                                                                                -----------         ------------
         Net interest income after provision for loan losses                      1,929,848            2,150,761
                                                                                -----------         ------------

Noninterest income:
    Service charges on deposit accounts                                              79,175              113,842
    Other customer fees and charges                                                 140,387               18,738
    Recovery on unauthorized overdraft (note 13)                                    200,000                   -
    Gains on sales of investment securities                                           4,116                   -
                                                                                -----------         -----------
         Total noninterest income                                                   423,678              132,580
                                                                                -----------         ------------
Noninterest expense:
    Salaries and employee benefits                                                  797,078              766,960
    Occupancy                                                                       104,000               93,026
    Furniture and equipment                                                          98,312               57,097
    Loss on unauthorized overdraft (note 13)                                             -               700,471
    Other                                                                           698,500              617,292
                                                                                -----------         ------------
         Total noninterest expense                                                1,697,890            2,234,846
                                                                                -----------         ------------
         Income before income taxes                                                 655,636               48,495
Income tax expense (note 8)                                                        (297,605)             (25,674)
                                                                                -----------         ------------
         Net income                                                           $      358,031              22,821
                                                                                ============        ============
Earnings per share (note 1i):
    Net income per common share equivalent                                         $  1.15                  .08
                                                                                     =====                 ====
</TABLE>





                                       67
<PAGE>




- ----------------------------------------------------------------------------
See accompanying notes to financial statements.
- ----------------------------------------------------------------------------
                                                     
<TABLE>

                                              MERCANTILE BANK

                                     Statements of Stockholders' Equity

                                   Years Ended December 31, 1996 and 1995








                                                                      Unrealized
                                                       Additional     Gain (Loss)                      Total
                                 Common Stock            Paid-In     on Investment    Retained     Stockholders'
                            Shares        Amount         Capital    Securities, Net   Earnings        Equity
<S>                         <C>       <C>               <C>              <C>          <C>           <C>

Balance,
    December 31,
    1994                    283,380   $  1,472,150       941,737         (97,076)     1,708,967     4,025,778

Net income                       -              -             -               -          22,821        22,821
Change in
    unrealized gain
    on investment
    securities, net
    of related
    income tax
    expense of
    $74,184                      -              -             -          102,721             -        102,721
                           --------     ----------    ----------       ---------     ----------    ----------

Balance,
    December 31,
    1995                    283,380      1,472,150       941,737           5,645      1,731,788     4,151,320

Net income                       -              -             -               -         358,031       358,031
Stock options
    exercised                53,600        278,670       151,455              -              -        430,125

Change in
    unrealized gain
    on investment
    securities, net
    of related
    income tax
    benefit of
    $5,173                       -              -             -           (8,137)            -         (8,137)
                           --------     ----------    ----------       ---------     ----------    ----------

Balance,
    December 31,
    1996                    336,980   $  1,750,820     1,093,192          (2,492)     2,089,819     4,931,339
                           ========     ==========    ==========       ==========    ==========    ==========


</TABLE>
See accompanying notes to financial statements.



                                       68
<PAGE>


<TABLE>


                                              MERCANTILE BANK
                                          Statements of Cash Flows
                                   Years Ended December 31, 1996 and 1995


                                                                                     1996                 1995
- --------------------------------------------------------------------------------------------------------------
<S>                                                                           <C>                      <C>

Cash flows from operating activities:
    Net income                                                                $      358,031              22,821
    Adjustments to reconcile net income to net cash
       provided by operating activities:
         Amortization of deferred loan origination fees                             (196,398)           (211,170)
         Net accretion of investment securities, net                                  (3,484)               (466)
         Provision for loan losses                                                   427,967             293,265
         Provision for real estate owned losses                                      110,000                  -
         (Gain) loss on real estate owned                                            (16,251)             30,114
         Depreciation and amortization of premises and equipment                      55,664              39,630
         Provision for deferred income taxes                                         118,258            (260,099)
         Decrease (increase) in accrued interest receivable
            and other assets                                                         188,253             (87,181)
         (Decrease) increase in accrued interest payable
            and other liabilities                                                   (690,354)            768,429
                                                                                ------------        ------------

                  Net cash provided by operating activities                          351,686             595,343
                                                                                ------------        ------------

Cash flows provided by (used in) investing activities:
    Net decrease (increase) in loans                                               3,642,789          (2,484,165)
    Proceeds from sale of real estate owned                                          856,251             279,108
    Proceeds from maturities of investment securities                              1,885,870             750,000
    Purchases of investment securities                                            (1,750,000)           (750,000)
    (Increase) decrease in certificates of deposit at
       other financial institutions                                                 (297,000)            183,000
    Purchases of premises and equipment                                              (55,851)           (112,556)
                                                                                ------------        ------------

                  Net cash provided by (used in) investing activities              4,282,059          (2,134,613)
                                                                                ------------        ------------

Cash flows (used in) provided by financing activities:
    Net (decrease) increase in deposits                                           (5,980,460)          7,767,703
    Proceeds from stock options exercised                                            430,125                  -
                                                                                ------------        -----------

                  Net cash (used in) provided by financing activities             (5,550,335)          7,767,703
                                                                                ------------        ------------

(Decrease) increase in cash and cash equivalents                                    (916,590)          6,228,433

Cash and cash equivalents at beginning of year                                     9,539,984           3,311,551
                                                                                ------------        ------------

Cash and cash equivalents at end of year                                      $    8,623,394           9,539,984
                                                                                ============        ============
Supplemental Disclosures of Cash Flow Information:
    Income tax payments                                                       $       56,000             228,000
                                                                                ============        ============

    Interest paid on deposits and other borrowings                            $    1,686,959           1,989,823
                                                                                ============        ============

Noncash Transactions:
    Net transfer to other real estate owned                                   $    1,020,000             309,222
                                                                                ============        ============

</TABLE>
See accompanying notes to financial statements.


                                       69
<PAGE>




- ----------------------------------------------------------------------------
                                              MERCANTILE BANK
- ----------------------------------------------------------------------------

                                       Notes to Financial Statements

                                        
                                         December 31, 1996 and 1995



(1)      Summary of Significant Accounting Policies

         Mercantile Bank (the Bank) is a state chartered bank incorporated under
         the laws of the  State of  California.  The  accounting  and  reporting
         policies of Mercantile Bank conform with generally accepted  accounting
         principles and prevailing  practices  within the banking  industry.  In
         preparing  the  financial  statements,  management  is required to make
         estimates and  assumptions  that affect the reported  amounts of assets
         and  liabilities  as of the date of the  balance  sheet and revenue and
         expenses  for the  period.  Actual  results  could  differ  from  those
         estimates  applied in the  preparation  of the  accompanying  financial
         statements. A summary of the significant accounting policies applied in
         the preparation of the accompanying financial statements follows:

         (a)    Cash and Cash Equivalents

         For purposes of the statements of cash flows, cash equivalents  include
         cash on hand and due from banks and Federal funds sold.

         (b)    Investment Securities

         The Bank applies the  provisions  of Statement of Financial  Accounting
         Standards (SFAS) No. 115, Accounting for Certain Investment in Debt and
         Equity  Securities.  At the time of purchase  of a  security,  the Bank
         designates the security as held-to-maturity or available for sale based
         on the Bank's investment  objectives,  operational needs, and intent to
         hold.  Held-to-maturity  securities  are  recorded at  amortized  cost,
         adjusted  for  amortization  or  accretion  of premiums  or  discounts.
         Available-for-sale   securities   are   recorded  at  fair  value  with
         unrealized  holding  gains and  losses,  net of the related tax effect,
         reported as a separate  component  of stock  equity.  The Bank does not
         hold securities for trading purposes.

         A decline  in the fair  value  below  cost that is  deemed  other  than
         temporary  results  in a  charge  to  earnings  and  the  corresponding
         establishment  of a new cost for the  security.  No such  declines have
         occurred.  Premiums and  discounts  are  amortized or accreted over the
         life of the  security as an  adjustment  to yield  using the  effective
         interest  method.  Dividend and  interest  income are  recognized  when
         earned.  Realized  gains and losses are  included in  earnings  and are
         derived using the specific  identification  method for  determining the
         cost of securities sold.





                                       70
<PAGE>




         (c)    Loans

         Loans are stated at the principal amount  outstanding,  net of unearned
         income and the allowance for loan losses. During 1995, the Bank adopted
         the provisions of SFAS No. 114,  Accounting by Creditors for Impairment
         of a Loan,  as amended by SFAS No. 118,  Accounting  by  Creditors  for
         Impairment of a Loan-Income Recognition and Disclosures (SFAS No. 114).
         A loan within the scope of SFAS No. 114 is  considered  impaired  when,
         based on current  information and events,  it is probable that the Bank
         will be unable to collect all amounts due according to the  contractual
         terms of the loan agreement, including scheduled interest payments. For
         a loan that has been  restructured,  the contractual  terms of the loan
         agreement refer to the contractual terms specified by the original loan
         agreement,  not the contractual  terms  specified by the  restructuring
         agreement. An impaired loan is measured based upon the present value of
         future cash flows  discounted at the loan's  effective rate, the loan's
         observable market price, or the fair value of collateral if the loan is
         collateral  dependent.  Interest on impaired  loans is  recognized on a
         cash  basis.  SFAS  No.  114 does not  apply to large  groups  of small
         balance   homogeneous   loans  that  are  collectively   evaluated  for
         impairment.  If the  measurement  of the impaired loan is less than the
         recorded  investment  in the  loan,  an  impairment  is  recognized  by
         adjusting the  allowance for loan losses.  SFAS No. 114 does not change
         the timing of  charge-offs  of loans to reflect  the amount  ultimately
         expected to be collected.

         Interest on loans is calculated by using the simple  interest method on
         the daily balance of the principal amount outstanding.

         Loan origination fees are recognized as an adjustment of the yield over
         the  life of the  loan  by the  interest  method,  which  results  in a
         constant rate of return.  Certain direct costs of originating  the loan
         are deferred and recognized over the life of the loan as a reduction of
         the yield. Loan commitment fees received by the Bank are also deferred.
         Commitment fees meeting  certain  criteria are recognized over the life
         of the loan if a loan is granted or at the expiration of the commitment
         if the commitment expires unexercised.

         Loans on which  the  accrual  of  interest  has been  discontinued  are
         designated  as  nonaccrual  loans.  Accrual  of  interest  on  loans is
         discontinued  either when  reasonable  doubt  exists as to the full and
         timely  collection  of interest  or  principal  or when a loan  becomes
         contractually  past due by ninety days or more with respect to interest
         or principal.  When a loan is placed on nonaccrual status, all interest
         previously accrued but not collected is reversed against current period
         interest income.  Interest accruals are resumed on such loans only when
         they are brought fully current with respect to interest



                                       71
<PAGE>




         and principal and when,  in the judgment of  management,  the loans are
         estimated to be fully  collectible  as to both  principal and interest.
         Restructured  loans are loans on which  concessions  in terms have been
         granted because of the borrowers' financial  difficulties.  Interest is
         generally accrued on such loans in accordance with the new terms.

         (d)    Allowance for Loan Losses

         The  allowance  for loan  losses is  established  through  a  provision
         charged to expense. The allowance is an amount that management believes
         will be  adequate  to absorb  losses  inherent  in  existing  loans and
         commitments   to   extend   credit,   based  on   evaluations   of  the
         collectibility  and prior loss  experience of loans and  commitments to
         extend credit.  The evaluations take into consideration such factors as
         changes in the nature and volume of the  portfolio,  overall  portfolio
         quality, loan concentrations,  specific problem loans, commitments, and
         current and anticipated  local economic  conditions that may affect the
         borrower's  ability to pay. While management uses these  evaluations to
         recognize  the  provision  for loan losses,  future  provisions  may be
         necessary based on changes in the factors used in the evaluations.

         Material  estimates  relating to the determination of the allowance for
         loan losses are particularly  susceptible to significant  change in the
         near term.  Management  believes  that the allowance for loan losses is
         adequate.  While  management  uses  available  information to recognize
         losses on loans,  future  additions to the  allowance  may be necessary
         based on changes in  economic  conditions.  In  addition,  the  Federal
         Deposit  Insurance  Corporation  (FDIC),  as an  integral  part  of its
         examination process, periodically reviews the Bank's allowance for loan
         losses.  The FDIC may require the Bank to  recognize  additions  to the
         allowance based on their judgment about  information  available to them
         at the time of their examination.

         (e)    Bank Premises and Equipment

         Bank  premises  and  equipment  are  stated at cost,  less  accumulated
         depreciation and amortization. Depreciation of equipment is computed on
         the straight-line method over the estimated useful life of each type of
         asset for financial  statement  reporting  purposes.  Estimated  useful
         lives of equipment are from three to 10 years.  Once equipment  becomes
         fully depreciated, its cost and associated accumulated depreciation are
         removed from the general ledger.

         Leasehold  improvements  (Bank  premises) are  capitalized  and
         amortized over the shorter of their estimated  useful  lives  or  over
         the  term  of  the  lease.   Repairs,   maintenance  and  minor
         improvements are charged to operations as incurred.  When



                                       72
<PAGE>




         property is sold or otherwise  disposed of, the cost of such assets and
         the related accumulated  depreciation are removed from their respective
         accounts and any resulting gain or loss is recognized.

         (f)    Other Real Estate Owned

         Real  estate  acquired by  foreclosure,  is carried at the lower of the
         recorded  investment  in the property or its fair value less  estimated
         selling costs.  Prior to foreclosure,  the value of the underlying loan
         is written  down to the fair value of the real estate to be acquired by
         a charge to the allowance for loan losses, if necessary.  Fair value of
         other real estate owned is generally  determined  based on an appraisal
         of  the  property.  Any  subsequent  write-downs  are  charged  against
         operating  expenses.  Operating  expenses  of such  properties,  net of
         related income,  and gains and losses on their disposition are included
         in other  operating  expenses.  A net loss of $326,091 and $162,719 was
         recorded for the years ended December 31, 1996 and 1995, respectively.

         Revenue recognition on the disposition of real estate is dependent upon
         the transaction  meeting certain criteria relating to the nature of the
         property sold and the terms of the sale.  Under certain  circumstances,
         revenue recognition may be deferred until these criteria are met.

         (g)    Impairment of Long-Lived Assets and Long-Lived Assets to Be 
                Disposed Of

         The Bank adopted the  provisions  of SFAS No. 121,  Accounting  for the
         Impairment  of  Long-Lived  Assets  and  for  Long-Lived  Assets  to Be
         Disposed  Of,  on  January  1,  1996.  This  Statement   requires  that
         long-lived assets and certain identifiable  intangibles be reviewed for
         impairment  whenever events or changes in  circumstances  indicate that
         the carrying amount of an asset may not be recoverable.  Recoverability
         of  assets  to be held  and used is  measured  by a  comparison  of the
         carrying  amount of an asset to future  net cash flows  expected  to be
         generated by the asset.  If such assets are  considered to be impaired,
         the  impairment  to be  recognized  is measured by the amount which the
         carrying  value  exceeds  the fair  value of the  assets.  Assets to be
         disposed of are  reported at the lower of the  carrying  amount or fair
         value less costs to sell.  Adoption  of this  Statement  did not have a
         material  impact  on  the  Bank's   financial   position,   results  of
         operations, or liquidity.





                                       73
<PAGE>




         (h)    Income Taxes

         The Bank  accounts  for  income  taxes  under the  asset and  liability
         method.  Under the asset and liability method,  deferred tax assets and
         liabilities are recognized for the future tax consequences attributable
         to  differences  between the financial  statement  carrying  amounts of
         existing  assets  and  liabilities  and  their  respective  tax  bases.
         Deferred  tax assets and  liabilities  are measured  using  enacted tax
         rates  expected to apply to taxable  income in the years in which those
         temporary  differences  are expected to be  recovered  or settled.  The
         effect on deferred tax assets and  liabilities of a change in tax rates
         is recognized in income in the period that includes the enactment date.

         (i)    Earnings Per Share

         Earnings per share is calculated  on the basis of the  weighted-average
         number of shares and common share  equivalents  outstanding  during the
         year.

         (j)    Stock Option Plan

         Prior to January 1, 1996,  the Bank accounted for its Stock Option Plan
         in accordance with the provisions of Accounting  Principles Board (APB)
         Opinion No. 25,  Accounting for Stock Issued to Employees,  and related
         interpretations. As such, compensation expense would be recorded on the
         date of grant, only if the current market price of the underlying stock
         exceeded the exercise  price. On January 1, 1996, the Bank adopted SFAS
         No.  123,  Accounting  for  Stock-Based  Compensation,   which  permits
         entities to recognize  as expense,  over the vesting  period,  the fair
         value of all stock-based  awards on the date of the grant. SFAS No. 123
         also allows entities to continue to apply the provisions of APB Opinion
         No. 25 and  provide  pro forma net  income and pro forma  earnings  per
         share  disclosures  for employee  stock option  grants made in 1995 and
         future years, as if the fair-value-based method defined in SFAS No. 123
         had been  applied.  The Bank  has  elected  to  continue  to apply  the
         provisions  of APB Opinion No. 25 and provide the pro forma  disclosure
         provisions  of SFAS No. 123 for stock option  grants.  The Bank has not
         made any  stock  option  grants  since  1991,  therefore,  a pro  forma
         disclosure is not required.


(2)      Cash and Due From Banks

         The Bank is required to maintain  daily reserve  balances in accordance
         with Federal  Reserve Board  requirements.  The average reserve balance
         maintained in  accordance  with such  requirements  for the years ended
         December 31, 1996 and 1995 was $163,000 and $153,000, respectively.




                                       74
<PAGE>




(3)      Investment Securities
         The  amortized  cost and  estimated  fair value of  available  for sale
         investment securities are as follows:
<TABLE>

                                                               Gross               Gross             Estimated
                                         Amortized          Unrealized          Unrealized             Fair
                                           Cost                Gains              Losses               Value
             <S>                     <C>                         <C>               <C>                 <C>    

             December 31, 1996:
                U.S.  Treasury
                   securities
                   and
                   obligations
                   of U.S.
                   government
                   corporations
                   and agencies       $     3,511,180             6,220            (10,517)            3,506,883
                                        =============         =========           ========         =============
</TABLE>
<TABLE>


                                                               Gross               Gross             Estimated
                                         Amortized          Unrealized          Unrealized             Fair
                                           Cost                Gains              Losses               Value
             <S>                     <C>                        <C>                 <C>                <C> 

             December 31, 1995:
                U.S.  Treasury
                   securities
                   and
                   obligations
                   of U.S.
                   government
                   corporations
                   and agencies       $     3,643,566            19,216             (9,482)            3,653,300
                                        =============         =========           ========         =============
</TABLE>

         The  amortized  cost and  estimated  fair value of  available  for sale
         investment  securities at December 31, 1996 by contractual maturity are
         shown below. Expected maturities may differ from contractual maturities
         because borrowers may have the right to call or prepay obligations with
         or without prepayment penalties.
<TABLE>

                                                                                                    Estimated
                                                                               Amortized              Fair
                                                                                 Cost                 Value
            <S>                                                        <C>                         <C> 

            Due in one year or less                                    $        650,062              650,202
            Due after one year through five years                             2,611,118            2,604,708
            Due after five years                                                250,000              251,973
                                                                         --------------       --------------
                                                                       $      3,511,180            3,506,883
                                                                         ==============       ==============
                
</TABLE>



                                       75
<PAGE>




(4)      Loans

         The Bank grants commercial,  installment, real estate construction, and
         other real estate loans to customers  primarily in  Sacramento  County.
         Generally,  the  loans are  secured  by  business  assets  and/or  real
         property.

         The  composition  of the Bank's  loan  portfolio  at  December 31 is as
follows:
<TABLE>

                                                                               1996                1995
                                                                               ----                ----
            <S>                                                        <C>                        <C>  

            Commercial and industrial                                  $     12,460,397           13,798,300
            Real estate                                                      18,934,451           22,695,514
            Consumer                                                            607,505              344,190
                                                                         --------------       --------------
 
                                                                             32,002,353           36,838,004
            Less:
                Deferred loan fees                                             (109,777)            (235,143)
                Allowance for loan losses                                    (1,091,861)            (907,788)
                                                                         --------------       --------------

                                                                       $     30,800,715           35,695,073           
                                                                         ==============          ===========
</TABLE>

         Loans  which  were  sold  and  being   serviced  by  the  Bank  totaled
         approximately  $3,456,200 and $3,575,600 at December 31, 1996 and 1995,
         respectively.

         Nonaccrual loans total approximately  $619,300 and $913,600 at December
         31, 1996 and 1995,  respectively.  If interest on nonaccrual  loans had
         been accrued,  such income would have approximated  $70,692 and $54,400
         for the years ended December 31, 1996 and 1995, respectively.

         Impaired  loans are loans for which it is  probable  that the Bank will
         not be able to collect  all amounts  due.  As of December  31, 1996 and
         1995,  the  Bank  had   outstanding   balances  in  impaired  loans  of
         approximately $619,300 and $913,600,  respectively, which had valuation
         allowances  of  $205,996  and  $182,700,   respectively.   The  average
         outstanding balance of impaired loans was $766,500 and $799,600 for the
         years ended 1996 and 1995, respectively.





                                       76
<PAGE>




         Changes in the allowance  for loan losses for the years ended  December
31 are as follows:
<TABLE>
                                                             1996                 1995
                                                             ----                 ----
          <S>                                            <C>                    <C>
          Balance, beginning of year                     $  907,788             1,035,385
          Recoveries on loans charged off                    37,730                80,682
          Provision for loan losses                         427,967               293,265
          Loans charged off                                (281,624)             (501,544)
                                                         ----------              --------

          Balance, end of year                           $1,091,861               907,788
                                                         ==========             =========
</TABLE>

(5)      Bank Premises and Equipment

         The  Bank's  premises  and  equipment  consisted  of the  following  at
December 31:
<TABLE>
                                                             1996                 1995
                                                             ----                 ----
          <S>                                            <C>                    <C>    

          Leasehold improvements                         $  33,373                33,373
            Furniture and fixtures                          50,697                28,858
            Equipment                                      311,130               277,115
                                                         ---------              --------
                                                           395,200               339,346

          Less accumulated depreciation                      
            and amortization                              (272,120)             (216,453)
                                                          --------              --------
                                                         $ 123,080               122,893
                                                         =========              ========
</TABLE>
          
         Depreciation  and  amortization  charged to expense  amounted  to
        $55,664  and  $39,630 in 1996 and 1995, respectively.

<TABLE>

(6)      Deposits

         Deposits consisted of the following at December 31:

                                                             1996                 1995
                                                             ----                 ----
         <S>                                            <C>                    <C>                
         Noninterest bearing, demand                    $ 8,368,276             8,076,800
         Interest bearing savings                           415,308               387,154
         NOW accounts                                     3,582,494             3,049,014
         Money Market                                     9,188,828            12,833,040
          Time                                           19,691,303            22,880,661
                                                         ----------            ----------

                                                        $41,246,209            47,226,669
                                                        ===========            ==========
</TABLE>
        
              


                                       77
<PAGE>




         As of December  31, 1996 and 1995,  the Bank had time  certificates  of
         deposit in denominations  of $100,000 or more totaling  $10,326,153 and
         $11,343,905, respectively. Interest paid on these deposits was $642,204
         in 1996 and $658,637 in 1995.

         As of December 31, 1996, the aggregate  maturities for time deposits in
         excess of one year are as follows:

         Year ended
         December 31,
             1997                                            $     16,410,053
             1998                                                   2,804,345
             1999                                                     121,968
             2000                                                     254,937
             2001                                                     100,000
                                                               --------------

                 Total                                       $     19,691,303
                                                               ==============


(7)      Stock Option Plan

         In 1991,  the Bank granted 50,000 stock options to Directors and 23,500
         stock options to key employees who had substantial  responsibility  for
         the successful  operation of the Bank.  The 23,500  options  granted to
         employees were "incentive stock options" as defined in Internal Revenue
         Service Code Section  422A.  Options were granted at an exercise  price
         not less than the fair  market  value of the stock at the date of grant
         and become  exercisable  over varying periods of time. The option price
         for  Directors  was $8.25 and $7.50 for  employees.  As of December 31,
         1995,  71,220 of the total options granted were  exercisable and 53,600
         options were exercised  during 1996. All of the remaining stock options
         expired in June, 1996.






                                       78
<PAGE>




(8)      Income Taxes

         The provision for income taxes  consists of the following for the years
ended December 31:
                                                1996                 1995
                                                ----                 ----
         Current:
           Federal                         $     111,879              223,346
           State                                  67,468               62,427
                                             -----------          -----------
             Total current expense               179,347              285,773
                                             -----------          -----------

         Deferred:
           Federal                               109,982             (200,579)
           State                                   8,276              (59,520)
                                             -----------          -----------

             Total deferred expense              118,258             (260,099)
                                             -----------          -----------

                                           $     297,605               25,674
                                             ===========          ===========

         The tax effects of temporary  differences that give rise to significant
         portions of the  deferred  tax assets and  liabilities  at December 31,
         1996 and 1995 are presented below:
                                                 1996                 1995
                                                 ----                 ----
                                                              
         Deferred tax assets:
           State franchise taxes           $    23,384               23,091
           Provision for loan losses           373,671              404,219
           Deferred loan fees                   17,952               58,591
           Fixed asset depreciation              8,197               22,352
           Investment unrealized 
           securities losses                     1,085                 -
           Other                               332,904              369,285
                                            -----------          -----------
           Total gross deferred tax assets     757,193              877,538

             Less valuation allowance          (40,000)             (40,000)
                                            -----------          -----------
             Deferred tax assets               717,193              837,538

           Deferred tax liabilities:
             Investment unrealized 
             securities gains                      -                 (4,088)
             Other                                 -                 (3,172)
                                            -----------          ----------

           Total gross deferred
           tax liabilities                         -                 (7,260)
                                            -----------          ----------

           Net deferred tax assets        $    717,193              830,278
                                           ===========          ===========

         Net deferred tax assets are included in accrued interest receivable and
         other assets in the accompanying balance sheets.





                                       79
<PAGE>




         A valuation  allowance is provided when it is more likely than not that
         some  portion  of  the  deferred  tax  assets  will  not  be  realized.
         Management believes that the valuation allowance is sufficient to cover
         that  portion  that will not be fully  realized.  The net change in the
         total  valuation  allowance  for the years ended  December 31, 1996 and
         1995 was $0 and an increase of $40,000, respectively.

         Income tax expense  attributable to operations was $297,605 and $25,674
         for the years  ended  December  31,  1996 and 1995,  respectively,  and
         differed from the amounts  computed by applying the U.S. federal income
         tax rate of 34 percent to pretax income from  operations as a result of
         the following:
<TABLE>

                                                                            1996                      1995
                                                                            ----                      ----
           <S>                                                              <C>                       <C>    
           Computed "expected" tax expense                                  34.0%                     34.0%
            State franchise tax, net of Federal
                tax benefit                                                  7.6%                      4.0%
            Change in the beginning-of-the-year
                allowance for deferred tax assets
                allocated to income tax expense                                0%                     82.5%
            Other                                                            4.9%                     (9.5)%
            Refund of prior year federal and state
                taxes paid                                                     0%                    (54.6)%
            Increase in state franchise tax rate                            (1.1)%                    (3.5)%
                                                                            ----                     -----

                Effective income tax rate                                   45.4%                     52.9%
                                                                            ====                     =====
</TABLE>

(9)      Transactions with Related Parties

         During the normal course of business, the Bank enters into transactions
         with related parties,  including Directors and their affiliates. In the
         opinion of management,  these  transactions,  which include  borrowings
         from the Bank, are made under  substantially the same terms,  including
         interest rates and collateral, as loans to unaffiliated parties and did
         not  involve  more than the normal  risk of  collectibility  or present
         other unfavorable conditions. Loan activity with related parties during
         1996 was as follows:

            Loans at December 31, 1995              $     2,293,273
            Loan originations                               151,472
            Loan payments                                (1,008,311)
                                                      -------------
            Loans at December 31, 1996               $    1,436,434
                                                      =============

         At December 31, 1996 and 1995,  the Bank had deposits due to directors,
         officers   and   employees   totaling    $1,089,141   and   $2,639,497,
         respectively.





                                       80
<PAGE>





(10)     Commitments and Contingencies

         (a)    Financial Instruments With Off-Balance Sheet Risk

         In the  normal  course  of  business,  the Bank is a party  to  certain
         financial  instruments  with  off-balance  sheet risk.  These financial
         instruments  include  commitments to extend credit in the form of loans
         or through standby letters of credit.  These  instruments  involve,  to
         varying degrees, elements of credit and interest rate risk in excess of
         the amounts  recognized in the balance sheet.  The contract  amounts of
         those  instruments  reflect the extent of  involvement  the Bank has in
         particular classes of financial instruments.

         The Bank's  exposure to credit loss in the event of  nonperformance  by
         the other party to the financial  instrument for  commitments to extend
         credit and standby  letters of credit is represented by the contractual
         notional  amount of those  instruments.  The Bank uses the same  credit
         policies in making  commitments and conditional  obligations as it does
         for on-balance sheet instruments.

         At December 31, 1996,  financial  instruments  whose  contract  amounts
         represent credit risk are as follows:

            Commitments to extend credit         $     7,365,164
                                                   =============
            Standby letters of credit            $       642,916
                                                   =============

         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,  property,  plant and
         equipment, and income-producing or other real estate.





                                       81
<PAGE>




         Standby  letters of credit are  conditional  commitments  issued by the
         Bank to  guarantee  the  performance  of a customer  to a third  party.
         Collateral  obtained,  if deemed necessary,  is varied. The credit risk
         characteristics  involved in  commitments  to extend credit and issuing
         letters  of  credit  are  essentially  the  same as those  involved  in
         outstanding loans (see note 4).

         SFAS No. 119,  Disclosure  about Derivative  Financial  Instruments and
         Fair Value of Financial  Instruments,  requires certain disclosures for
         off-balance sheet derivative financial instruments.  As of December 31,
         1996,  the  Bank  has  no  off-balance  sheet   derivatives   requiring
         additional disclosure under the provisions of SFAS No. 119.

         (b)    Operating Leases

         The Bank leases its office premises under operating leases. The minimum
         annual lease payments are as follows:

                1997                                   $   81,955
                1998                                       68,296
                                                       ----------

                Total future minimum lease payments    $  150,251
                                                       ==========

         Lease rental expense  amounted to $95,532 and $93,026 in 1996 and 1995,
respectively.

         (c)    Litigation

         The Bank is involved in legal  actions  arising in the normal course of
         business.  In the opinion of management,  after  consultation  with its
         legal counsel,  the ultimate disposition of these matters will not have
         a material adverse effect on the Bank's financial  condition or results
         of operations.


(11)     Capital Adequacy and Restriction on Dividends

         The  Bank  is  subject  to  various  regulatory  capital   requirements
         administered by the federal banking  agencies.  Failure to meet minimum
         capital  requirements  can initiate  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



                                       82
<PAGE>




         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 (set
         forth in the table below).

         First,  a  bank  must  meet  a  minimum  Tier  I  (as  defined  in  the
         regulations)  Capital ratio ranging from 3% to 5% based upon the bank's
         CAMEL  (capital  adequacy,  asset  quality,  management,  earnings  and
         liquidity) rating.

         Second,  a  bank  must  meet  minimum  Total   Risk-Based   Capital  to
         risk-weighted   assets  ratio  of  8%.  Risk-based  capital  and  asset
         guidelines  vary from  Tier I  capital  guidelines  by  redefining  the
         components of capital, categorizing assets into different risk classes,
         and including certain off-balance sheet items in the calculation of the
         capital ratio. The effect of the risk-based  capital guidelines is that
         banks with high exposure will be required to raise  additional  capital
         while  institutions  with low risk exposure could, with the concurrence
         of regulatory  authorities,  be permitted to operate with lower capital
         ratios. In addition, a bank must meet minimum Tier I Capital to average
         assets ratio.

         Management  believes,  as of December 31, 1996, that the Bank meets all
         capital  adequacy  requirements to which it is subject.  As of December
         31, 1996, the most recent  notification,  the Federal Deposit Insurance
         Corporation  (FDIC)  categorized the Bank as well capitalized under the
         regulatory framework for prompt corrective action. To be categorized as
         adequately  capitalized  the Bank must meet the  minimum  ratios as set
         forth below.  There are no conditions or events since that notification
         that management believes have changed the institution's category.

         The Bank's  actual  capital  amounts and ratios as of December 31, 1996
         are as follows:
<TABLE>
                                                                            To Be Well
                                                                         Capitalized Under
                                                      For Capital        Prompt Corrective
                                  Actual           Adequacy Purposes:    Action Provisions:
                            Amount      Ratio     Amount       Ratio      Amount      Ratio
<S>                       <C>           <C>       <C>          <C>        <C>         <C>

Total Risk-Based
  Capital (to Risk
Weighted Assets)          $ 5,351,000   15.14%    $2,828,000   8.0%       $3,535,000  10.0%
                                                                                                      
Tier I Capital
  (to Risk 
   Weighted Assets)       $ 4,901,000   13.86%    $1,414,000    4.0%      $2,121,000   6.0%
                                                                 
Tier I Capital
  (to Average
   Assets)                $ 4,901,000   10.58%    $1,853,000    4.0%      $2,316,000   5.0%
                                                                                                         

</TABLE>




                                       83
<PAGE>




         Cash dividends are restricted  under  California  state banking laws to
         the lesser of the Bank's retained earnings or the Bank's net income for
         the latest three  fiscal  years,  less  dividends  previously  declared
         during that period. The Bank paid no dividends in 1996 and 1995.


(12)     Regulatory Matters

         On August 16, 1995, the Bank entered into a Memorandum of Understanding
         (Memorandum) with the Federal Deposit Insurance  Corporation (FDIC) and
         the California  Superintendent of Banks (Superintendent) as a result of
         an examination  of the Bank by the FDIC.  The Memorandum  required that
         the Bank take certain actions within  specified  periods of time. These
         requirements included, among other things, that the Bank (a) revise and
         formalize  various  policies and  procedures  with respect to board and
         management  supervision,  lending and funds management,  and compliance
         with laws, rules and  regulations;  (b) review and maintain an adequate
         allowance  for loan  losses;  and (c) reduce the balance of  classified
         assets to $2,500,000  and  $2,000,000 by December 31, 1995 and June 30,
         1996, respectively.

         Subsequently,  on July 8, 1996, this original Memorandum was terminated
         by the FDIC and replaced with a new Memorandum, which requires the Bank
         to,  among other  things:  a) maintain a Tier 1 capital  that equals or
         exceeds 7.5% of total assets; b) eliminate all assets classified "Loss"
         and one-half of the assets classified  "Doubtful" within 10 days of the
         July 8, 1996  effective  date;  and,  c) reduce  the  balance of assets
         classified  "Substandard" to $4,200,000,  $4,000,000,  $3,000,000,  and
         $2,000,000  by September 30, 1996,  December 31, 1996,  March 31, 1997,
         and June 30, 1997, respectively.

         As  of  September  30  and   December  31,  1996,   assets   classified
         "Substandard"   were    approximately    $3,504,000   and   $2,800,000,
         respectively. Management believes the Bank is in substantial compliance
         with the terms and conditions of the Memorandum entered into on July 8,
         1996.


(13)     Loss on Unauthorized Overdraft

         In January  1996,  the Bank  incurred a $700,471 loss as a result of an
         unauthorized  overdraft  by a customer.  As the  customer's  activities
         leading up to the overdraft were occurring during 1995, the entire loss
         was accrued as of December 31, 1995. In March 1996, the Bank negotiated
         a repayment  schedule with the customer.  As of December 31, 1996,  the
         Bank had recovered $200,000.




                                       84
<PAGE>




(14)     Subsequent Events

         On January 23, 1997,  the Bank and SierraWest  Bancorp,  a bank holding
         company, entered into an agreement that would result in a merger of the
         Bank into SierraWest  Bancorp.  The proposed  acquisition is subject to
         numerous  conditions and to shareholder  and  regulatory  approval.  No
         adjustments  have been made to the financial  statements as a result of
         the proposed acquisition.


(15)     Fair Values of Financial Instruments

         The  following  methods  and  assumptions  were  used  by the  Bank  in
         estimating its fair value disclosures for financial instruments:

            Cash and cash  equivalents:  The  carrying  amounts  reported in the
            balance sheet for cash and short-term  instruments  are a reasonable
            estimate of fair value.

            Investment  securities:  Fair values for  investment  securities are
            based on quoted market  prices,  where  available.  If quoted market
            prices are not  available,  fair  values are based on quoted  market
            prices of comparable instruments. (See note 3).

            Loans receivable:  For variable-rate  loans that reprice  frequently
            and with no significant change in credit risk, fair values are based
            on  carrying  values.   The  fair  values  for  other  loans  (e.g.,
            commercial  and industrial  loans and consumer  loans) are estimated
            using discounted cash flow analyses,  using interest rates currently
            being  offered for loans with similar  terms to borrowers of similar
            credit quality.

            Commitments to extend credit and standby letters of credit: The fair
            value of commitments is estimated  using the fees currently  charged
            to enter into similar agreements,  taking into account the remaining
            terms of the  agreements  and the  present  creditworthiness  of the
            counterparties.  For fixed-rate  loan  commitments,  fair value also
            considers the  difference  between  current levels of interest rates
            and the  committed  rates.  The fair  value of  letters of credit is
            based on fees  currently  charged for similar  agreements  or on the
            estimated cost to terminate them or otherwise  settle the obligation
            with the counterparties at the reporting date.

            Deposit  liabilities:  The fair values disclosed for demand deposits
            (e.g.,  interest and noninterest  checking,  passbook  savings,  and
            money  market  accounts)  are,  by  definition,  equal to the amount
            payable  on demand  at the  reporting  date  (i.e.,  their  carrying
            amounts). The fair values for fixed-rate certificates of deposit are
            estimated



                                       85
<PAGE>




            using a discounted cash flow calculation that applies interest rates
            currently  being offered on certificates to a schedule of aggregated
            expected monthly maturities on time deposits.

            Limitations:  Fair value  estimates are made at a specific  point in
            time, based on relevant market information and information about the
            financial instrument.  These estimates do not reflect any premium or
            discount  that could  result from  offering for sale at one time the
            Bank's entire holdings of a particular financial instrument. Because
            no market exists for a significant  portion of the Bank's  financial
            instruments,  fair value estimates are based on judgments  regarding
            future expected loss experience,  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 estimates.

            Fair value estimates are based on existing on-and  off-balance sheet
            financial  instruments  without  attempting to estimate the value of
            anticipated  future business and the value of assets and liabilities
            that are not considered  financial  instruments.  Other  significant
            assets and liabilities  that are not considered  financial assets or
            liabilities include deferred tax assets, property,  plant, equipment
            and  goodwill.  In addition,  the tax  ramifications  related to the
            realization  of  the   unrealized   gains  and  losses  can  have  a
            significant  effect  on fair  value  estimates  and  have  not  been
            considered in may of the estimates.




                                       86
<PAGE>





The estimated fair values of the Bank's financial instruments are as follows:

                                                     1996
                                                     ----        
                                                   Carrying           Fair
                                                    Amount            Value
Financial assets:
  Cash and short-term investments             $  10,109,394        10,109,394
                                               ============        ==========
  Investment securities                       $   3,506,883         3,506,883
                                               ============        ==========

  Loans:
    Fixed rate:
      Commercial and industrial               $   4,404,420         4,394,416
      Consumer                                       82,580            82,120
                                               ------------        ----------
         Total fixed rate                         4,487,000         4,476,536

         Variable rate                           27,515,353        27,515,353
                                               ------------        ----------
       Less allowance for loan losses            (1,091,861)       (1,091,861)

       Net deferred origination fees               (109,777)         (109,777)
                                               ------------        ----------
           Net loans                          $  30,800,715        30,790,251
                                              =============        ==========

Financial liabilities:
  Deposits:
    Demand                                    $  21,554,906         21,554,906
    Certificates of deposit                      19,691,303         19,856,000
                                              -------------         ----------
           Total deposits                     $  41,246,209         41,410,906
                                              =============         ==========


                                    Contract          Carrying             Fair
                                    Amount             Amount              Value
Unrecognized financial instruments:
Commitments to extend credit        $7,365,000            -               51,500
                                    ==========       ===============      ======

Standby letters of credit           $  643,000            -               32,100
                                    ==========       ===============      ======





                                       87
<PAGE>




The estimated fair values of the Bank's financial instruments are as follows:
- ---------------------------------------------------------------------------
<TABLE>

                                                                                              1995
                                                                                 Carrying               Fair
                                                                                  Amount                Value
            <S>                                                            <C>                        <C>    

            Financial assets:
                Cash and short-term investments                            $      10,728,984          10,728,984
                                                                             ===============      ==============

                Investment securities                                      $       3,653,300           3,653,300
                                                                             ===============      ==============

                Loans:
                   Fixed rate:
                      Commercial and industrial                            $       2,681,446           2,680,700
                      Consumer                                                       312,401             312,600
                                                                             ---------------      --------------

                           Total fixed rate                                        2,993,847           2,993,300

                           Variable rate                                          33,844,157          33,844,157
                                                                             ---------------      --------------

                      Less allowance for loan losses                                (907,788)           (907,788)

                      Net deferred origination fees                                 (235,143)           (235,143)
                                                                             ---------------      --------------

                           Net loans                                       $      35,695,073          35,694,526
                                                                             ===============      ==============

            Financial liabilities:
                Deposits:
                   Demand                                                  $      24,346,008          24,346,008
                   Certificates of deposit                                        22,880,661          23,169,000
                                                                             ---------------      --------------

                           Total deposits                                  $      47,226,669          47,515,008
                                                                             ===============      ==============

</TABLE>

<TABLE>


                                                              Contract           Carrying              Fair
                                                               Amount             Amount               Value

             <S>                                          <C>                             <C>             <C>

             Unrecognized financial instruments:
             Commitments to extend credit                 $     8,835,000                 -               44,000
                                                            =============    ===============      ==============

             Standby letters of credit                    $       594,000                 -               29,700
                                                            =============    ===============      ==============

</TABLE>




                                       88
<PAGE>









                                              MERCANTILE BANK

                                            Financial Statements

                                         December 31, 1995 and 1994

                                (With Independent Auditors' Report Thereon)

























                                       89
<PAGE>



(Letterhead of KPMG Peat Marwick LLP)




                                        Independent Auditors' Report

The Board of Directors
Mercantile Bank:

We have  audited  the  accompanying  balance  sheets  of  Mercantile  Bank as of
December 31, 1995 and 1994, and the related statements of income,  stockholders'
equity, and cash flows for the years then ended. 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 audit 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 Mercantile Bank as of December
31, 1995 and 1994 and the results of its  operations  and its cash flows for the
years then ended in conformity with generally accepted accounting principles.

As discussed in Note 1 to the financial statements,  the Bank changed its method
of  accounting  for  impaired  loans  in 1995 to  adopt  the  provisions  of the
Financial   Accounting  Standards  Board's  Statement  of  Financial  Accounting
Standards  (SFAS) No. 114,  Accounting by Creditors for Impairment of a Loan, as
amended by Statement  No. 118,  Accounting  by  Creditors  for  Impairment  of a
Loan-Income Recognition and Disclosures.


/S/ KPMG Peat Marwick LLP

February 23, 1996




                                       90
<PAGE>





<TABLE>

                                                    
                                              MERCANTILE BANK

                                               Balance Sheets

                                         December 31, 1995 and 1994



                              Assets                                                1995                 1994
- -------------------------------------------------------------------------------------------------------------
<S>                                                                        <C>                        <C>   

Cash and due from banks (note 2)                                           $       3,066,984           3,311,551
Federal funds sold                                                                 6,473,000                -
Certificates of deposit with banks                                                 1,189,000           1,372,000
Investment securities, at fair value (note 3)                                      3,653,300           3,475,728
Loans, net (note 4)                                                               35,695,073          33,602,225
Other real estate owned                                                              700,000             700,000
Bank premises and equipment, net (note 5)                                            122,893              49,967
Accrued interest receivable and other assets (note 8)                              1,364,429           1,091,534
                                                                             ---------------      --------------
         Total assets                                                      $      52,264,679          43,603,005
                                                                             ===============      ==============


               Liabilities and Stockholders' Equity
Liabilities:
   Deposits (note 6):
      Noninterest bearing                                                  $       8,076,800           7,080,240
      Interest bearing                                                            39,149,869          32,378,726
                                                                             ---------------      --------------
         Total deposits                                                           47,226,669          39,458,966
   Accrued interest payable and other liabilities (notes 10 and
      12)                                                                            886,690             118,261
                                                                             ---------------      --------------

         Total liabilities                                                        48,113,359          39,577,227
                                                                             ---------------      --------------
Stockholders' equity (note 7):
   Common stock - no par value; authorized 1,000,000
       shares, issued and outstanding 283,380 shares in
       1995 and 1994                                                               1,472,150           1,472,150
   Additional paid-in capital                                                        941,737             941,737
   Unrealized gain (loss) on investment securities, net
       (notes 3 and 8)                                                                 5,645             (97,076)
   Retained earnings (note 11)                                                     1,731,788           1,708,967
                                                                             ---------------      --------------
         Total stockholders' equity                                                4,151,320           4,025,778
                                                                             ---------------      --------------
Commitments and contingencies (note 10)
         Total liabilities and stockholders' equity                        $      52,264,679          43,603,005
                                                                             ===============      ==============
</TABLE>
See accompanying notes to financial statements.



                                       91
<PAGE>



<TABLE>

                                              MERCANTILE BANK

                                            Statements of Income

                                   Years Ended December 31, 1995 and 1994



                                                                                    1995                 1994
- -------------------------------------------------------------------------------------------------------------
<S>                                                                           <C>                      <C>  

Interest income:
   Loans including fees                                                       $   3,847,492            3,361,534
   Investment securities                                                            211,746              189,993
   Certificates of deposit in banks                                                  70,651               58,022
   Federal funds                                                                    331,411               77,481
                                                                                -----------         ------------
         Total interest income                                                    4,461,300            3,687,030
Interest expense on deposits                                                      2,017,274            1,435,899
                                                                                -----------         ------------
         Net interest income                                                      2,444,026            2,251,131
Provision for loan losses (note 4)                                                  293,265              990,000
                                                                                -----------         ------------
         Net interest income after provision for loan losses                      2,150,761            1,261,131
                                                                                -----------         ------------

Noninterest income:
    Service charges on deposit accounts                                             113,842              106,895
    Other customer fees and charges                                                  18,738               18,508
    Gains on sales of investment securities                                            -                     953
                                                                                -----------         ------------
         Total noninterest income                                                   132,580              126,356
                                                                                -----------         ------------
Noninterest expense:
    Salaries and employee benefits                                                  766,960              734,276
    Occupancy                                                                        93,026               95,677
    Furniture and equipment                                                          57,097               54,170
    Loss on unauthorized overdraft (note 12)                                        700,471                 -
    Other                                                                           617,292              515,611
                                                                                -----------         ------------
         Total noninterest expense                                                2,234,846            1,399,734
                                                                                -----------         ------------
         Income (loss) before income taxes                                           48,495              (12,247)
Income tax (expense) benefit (note 8)                                               (25,674)              23,082
                                                                                -----------         ------------
         Net income                                                           $      22,821               10,835
                                                                                ===========         ============
Earnings per share (note 1h):
    Net income per common share equivalent                                    $         .08                  .04
                                                                                      =====                =====
</TABLE>
See accompanying notes to financial statements.



                                       92
<PAGE>



<TABLE>

                                              MERCANTILE BANK
                                     Statements of Stockholders' Equity
                                   Years Ended December 31, 1995 and 1994




                                                                      Unrealized
                                                       Additional     Gain (Loss)                      Total
                                 Common Stock            Paid-In     on Investment    Retained     Stockholders'
                            Shares        Amount         Capital    Securities, Net   Earnings        Equity
<S>                         <C>       <C>                <C>            <C>           <C>          <C>

Balance,
    December 31,
    1993                    283,380   $  1,472,150       941,737          20,500      1,698,132     4,132,519
                           --------     ----------     ---------       ---------     ----------    ----------

Net income                       -              -             -               -          10,835        10,835

Change in
    unrealized loss
    on investment
    securities, net
    of related
    income taxes
    (benefit) of
    ($90,797)                    -              -             -         (117,576)            -       (117,576)
                           --------     ----------     ---------       ---------     ----------    ----------

Balance,
    December 31,
    1994                    283,380      1,472,150       941,737         (97,076)     1,708,967     4,025,778
                           --------     ----------     ---------       ---------     ----------    ----------

Net income                       -              -             -               -          22,821        22,821

Change in
    unrealized gain
    on investment
    securities, net
    of related
    income tax
    expense of
    $74,184                      -              -             -          102,721             -        102,721
                           --------     ----------     ---------       ---------     ----------    ----------

Balance,
    December 31,
    1995                    283,380   $  1,472,150       941,737           5,645      1,731,788     4,151,320
                           ========     ==========     =========       =========     ==========    ==========

</TABLE>

See accompanying notes to finacial statments.



                                       93
<PAGE>



<TABLE>

                                              MERCANTILE BANK

                                          Statements of Cash Flows

                                   Years Ended December 31, 1995 and 1994

                                                                                      1995                 1994
- ---------------------------------------------------------------------------------------------------------------
Increase  (decrease)  in cash and cash  equivalents:  Cash flows from  operating
activities:
<S>                                                                            <C>                   <C>  

    Net income                                                                 $      22,821              10,835
    Adjustments to reconcile net income to net cash
       provided by operating activities:
         Amortization of deferred loan origination fees                             (211,170)           (266,466)
         Accretion and amortization of investment
            securities, net                                                             (466)                647
         Provision for loan losses                                                   293,265             990,000
         Losses on real estate owned                                                  30,114              68,930
         Depreciation and amortization of premises and
            equipment                                                                 39,630              36,286
         Provision for deferred income taxes                                        (260,099)           (251,952)
         Increase in accrued interest receivable and other
            assets                                                                   (87,181)           (146,079)
         Increase (decrease) in accrued interest payable
            and other liabilities                                                    768,429            (147,422)
                                                                                 -----------         -----------

                  Net cash provided by operating activities                          595,343             294,779
                                                                                 -----------         -----------
Cash flows (used in) provided by investing activities:
    Net increase in loans                                                         (2,484,165)           (294,766)
    Proceeds from sale of real estate owned                                          279,108             281,424
    Proceeds from maturities of investment securities                                750,000           1,000,000
    Purchases of investment securities                                              (750,000)         (1,287,189)
    Decrease (increase) in certificates of deposit at
       other financial institutions                                                  183,000            (197,000)
    Purchases of premises and equipment                                             (112,556)            (47,568)
                                                                                 -----------         -----------
                  Net cash used by investing activities                           (2,134,613)           (545,099)
                                                                                 -----------         -----------
Cash flows provided by (used in) financing activities:
    Net increase (decrease) in deposits                                            7,767,703            (941,534)
                                                                                 -----------         -----------
Increase (decrease) in cash and cash equivalents                                   6,228,433          (1,191,854)
Cash and cash equivalents at beginning of year                                     3,311,551           4,503,405
                                                                                 -----------         -----------
Cash and cash equivalents at end of year                                       $   9,539,984           3,311,551
                                                                                 ===========         ===========
Supplemental Disclosures of Cash Flow Information:
    Income tax payments                                                        $     228,000             443,000
                                                                                 ===========         ===========
    Interest paid on deposits and other borrowings                             $   1,989,823           1,428,017
                                                                                 ===========         ===========
Noncash Transactions:
    Net transfer to other real estate owned                                    $     309,222             770,000
                                                                                 ===========         ===========

</TABLE>

See accompanying notes to financial statements.



                                       94
<PAGE>




                                 
                                              MERCANTILE BANK

                                       Notes to Financial Statements

                                         December 31, 1995 and 1994



(1)      Summary of Significant Accounting Policies
         Mercantile Bank (the Bank) is a state chartered bank incorporated under
         the laws of the  State of  California.  The  accounting  and  reporting
         policies of Mercantile Bank conform with generally accepted  accounting
         principles and prevailing  practices  within the banking  industry.  In
         preparing  the  financial  statements,  management  is required to make
         estimates and  assumptions  that affect the reported  amounts of assets
         and  liabilities  as of the date of the  balance  sheet and revenue and
         expenses  for the  period.  Actual  results  could  differ  from  those
         estimates  applied in the  preparation  of the  accompanying  financial
         statements. A summary of the significant accounting policies applied in
         the preparation of the accompanying financial statements follows:

         (a)    Cash and Cash Equivalents

         For purposes of the statements of cash flows, cash equivalents  include
         cash on hand and due from banks and Federal funds sold.

         (b)    Investment Securities

         Investment  securities,   which  include  only  debt  securities,   are
         classified as "available-for-sale" securities and carried at fair value
         at December 31, 1995 and 1994.  Unrealized gains or losses are excluded
         from earnings and reported net of income taxes, as a separate component
         of stockholders' equity.

         A decline  in the fair  value  below  cost that is  deemed  other  than
         temporary  results  in a  charge  to  earnings  and  the  corresponding
         establishment  of a new cost for the  security.  No such  declines have
         been recorded.

         (c)    Loans

         Loans are stated at the principal amount  outstanding,  net of unearned
         income and the allowance for loan losses. During 1995, the Bank adopted
         the provisions of Statement of Financial  Accounting Standards No. 114,
         Accounting  by  Creditors  for  Impairment  of a Loan,  as  amended  by
         Statement  No.  118,  Accounting  by  Creditors  for  Impairment  of  a
         Loan-Income  Recognition and Disclosures  (SFAS 114). A loan within the
         scope of



                                       95
<PAGE>




         SFAS 114 is considered  impaired when, based on current information and
         events,  it is  probable  that the Bank will be unable to  collect  all
         amounts due according to the  contractual  terms of the loan agreement,
         including  scheduled  interest  payments.  For a  loan  that  has  been
         restructured,  the contractual terms of the loan agreement refer to the
         contractual  terms  specified by the original loan  agreement,  not the
         contractual terms specified by the restructuring agreement. An impaired
         loan is  measured  based upon the  present  value of future  cash flows
         discounted at the loan's effective rate, the loan's  observable  market
         price,  or the fair  value  of  collateral  if the  loan is  collateral
         dependent.  Interest on impaired  loans is  recognized on a cash basis.
         SFAS 114 does not apply to large  groups of small  balance  homogeneous
         loans  that  are   collectively   evaluated  for  impairment.   If  the
         measurement  of the impaired loan is less than the recorded  investment
         in the loan, an impairment is recognized by adjusting the allowance for
         loan loss.  SFAS 114 does not change the timing of charge-offs of loans
         to reflect the amount ultimately expected to be collected.

         Interest on loans is calculated by using the simple  interest method on
         the daily balance of the principal amount outstanding.

         Loan origination fees are recognized as an adjustment of the yield over
         the  life of the  loan  by the  interest  method,  which  results  in a
         constant rate of return.  Certain direct costs of originating  the loan
         are deferred and recognized over the life of the loan as a reduction of
         the yield. Loan commitment fees received by the Bank are also deferred.
         Commitment fees meeting  certain  criteria are recognized over the life
         of the loan if a loan is granted or at the expiration of the commitment
         if the commitment expires unexercised.

         Loans on which  the  accrual  of  interest  has been  discontinued  are
         designated  as  nonaccrual  loans.  Accrual  of  interest  on  loans is
         discontinued  either when  reasonable  doubt  exists as to the full and
         timely  collection  of interest  or  principal  or when a loan  becomes
         contractually  past due by ninety days or more with respect to interest
         or principal.  When a loan is placed on nonaccrual status, all interest
         previously accrued but not collected is reversed against current period
         interest income.  Interest accruals are resumed on such loans only when
         they are brought  fully  current with respect to interest and principal
         and when, in the judgment of management,  the loans are estimated to be
         fully collectible as to both principal and interest. Restructured loans
         are loans on which  concessions  in terms have been granted  because of
         the borrowers'  financial or legal difficulties.  Interest is generally
         accrued on such loans in accordance with the new terms.




                                       96
<PAGE>




         (d)    Allowance for Loan Losses

         The  allowance  for loan  losses is  established  through  a  provision
         charged to expense. The allowance is an amount that management believes
         will be  adequate  to absorb  losses  inherent  in  existing  loans and
         commitments   to   extend   credit,   based  on   evaluations   of  the
         collectibility  and prior loss  experience of loans and  commitments to
         extend credit.  The evaluations take into consideration such factors as
         changes in the nature and volume of the  portfolio,  overall  portfolio
         quality, loan concentrations,  specific problem loans, commitments, and
         current and anticipated  local economic  conditions that may affect the
         borrower's  ability to pay. While management uses these  evaluations to
         recognize  the  provision  for loan losses,  future  provisions  may be
         necessary based on changes in the factors used in the evaluations.

         Material  estimates  relating to the determination of the allowance for
         loan losses are particularly  susceptible to significant  change in the
         near term.  Management  believes  that the allowance for loan losses is
         adequate.  While  management  uses  available  information to recognize
         losses on loans,  future  additions to the  allowance  may be necessary
         based on changes in  economic  conditions.  In  addition,  the  Federal
         Deposit  Insurance  Corporation  (FDIC),  as an  integral  part  of its
         examination process, periodically reviews the Bank's allowance for loan
         losses.  The FDIC may require the Bank to  recognize  additions  to the
         allowance based on their judgment about  information  available to them
         at the time of their examination.

         (e)    Bank Premises and Equipment

         Bank  premises  and  equipment  are  stated at cost,  less  accumulated
         depreciation and amortization. Depreciation of equipment is computed on
         the straight-line method over the estimated useful life of each type of
         asset for financial  statement  reporting  purposes.  Estimated  useful
         lives of equipment are from three to 10 years.  Once equipment  becomes
         fully depreciated, its cost and associated accumulated depreciation are
         removed from the general ledger.

         Leasehold  improvements  (Bank  premises) are capitalized and amortized
         over the shorter of their  estimated  useful  lives or over the term of
         the lease.  Repairs,  maintenance and minor improvements are charged to
         operations as incurred. When property is sold or otherwise disposed of,
         the cost of such assets and the related  accumulated  depreciation  are
         removed from their  respective  accounts and any resulting gain or loss
         is recognized.




                                       97
<PAGE>





         (f)    Other Real Estate Owned

         Real  estate  acquired by  foreclosure,  is carried at the lower of the
         recorded  investment  in the property or its fair value less  estimated
         selling costs.  Prior to foreclosure,  the value of the underlying loan
         is written  down to the fair value of the real estate to be acquired by
         a charge to the allowance for loan losses, if necessary.  Fair value of
         other real estate is generally  determined based on an appraisal of the
         property.  Any subsequent  write-downs  are charged  against  operating
         expenses. Operating expenses of such properties, net of related income,
         and  gains  and  losses  on their  disposition  are  included  in other
         operating expenses.

         Revenue recognition on the disposition of real estate is dependent upon
         the transaction  meeting certain criteria relating to the nature of the
         property sold and the terms of the sale.  Under certain  circumstances,
         revenue recognition may be deferred until these criteria are met.

         (g)    Income Taxes

         The Bank  accounts  for  income  taxes  under the  asset and  liability
         method.  Under the asset and liability method,  deferred tax assets and
         liabilities are recognized for the future tax consequences attributable
         to  differences  between the financial  statement  carrying  amounts of
         existing  assets  and  liabilities  and  their  respective  tax  bases.
         Deferred  tax assets and  liabilities  are measured  using  enacted tax
         rates  expected to apply to taxable  income in the years in which those
         temporary  differences  are expected to be  recovered  or settled.  The
         effect on deferred tax assets and  liabilities of a change in tax rates
         is recognized in income in the period that includes the enactment date.

         (h)    Earnings Per Share

         Earnings per share is calculated  on the basis of the  weighted-average
         number of shares and common share  equivalents  outstanding  during the
         year.

         (i)    Reclassifications

         Certain  reclassifications have been made to 1994 amounts to conform to
         1995 presentation. These reclassifications have no effect on net income
         or equity as previously reported.





                                       98
<PAGE>




(2)      Cash and Due From Banks

         The Bank is required to maintain  daily reserve  balances in accordance
         with Federal  Reserve Board  requirements.  The average reserve balance
         maintained in  accordance  with such  requirements  for the years ended
         December 31, 1995 and 1994 was $153,000 and $143,000, respectively.

(3)      Investment Securities
         The  amortized  cost and  estimated  fair value of  available  for sale
         investment securities are as follows:
<TABLE>
                                                               Gross               Gross             Estimated
                                         Amortized          Unrealized          Unrealized             Fair
                                           Cost                Gains              Losses               Value
             <S>                      <C>                       <C>                 <C>                <C>
             
             December 31, 1995:
                U.S.  Treasury
                   securities
                   and
                   obligations
                   of U.S.
                   government
                   corporations
                   and agencies       $     3,643,566            19,216             (9,482)            3,653,300
                                        =============         =========           ========         =============
</TABLE>
<TABLE>

                                                               Gross               Gross             Estimated
                                         Amortized          Unrealized          Unrealized             Fair
                                           Cost                Gains              Losses               Value
             <S>                      <C>                           <C>           <C>                  <C> 

             December 31, 1994:
                U.S.  Treasury
                   securities
                   and
                   obligations
                   of U.S.
                   government
                   corporations
                   and agencies       $     3,643,100               -             (167,372)            3,475,728
                                        =============         =========           ========         =============
</TABLE>





                                       99
<PAGE>




         The  amortized  cost and  estimated  fair value of  available  for sale
         investment  securities at December 31, 1995 by contractual maturity are
         shown below. Expected maturities may differ from contractual maturities
         because borrowers may have the right to call or prepay obligations with
         or without prepayment penalties.

<TABLE>
                                                                                                      Estimated
                                                                                 Amortized              Fair
                                                                                   Cost                Value
            <S>                                                            <C>                    <C>  

            Due in one year or less                                        $       1,249,918           1,244,962
            Due after one year through five years                                  2,143,648           2,153,290
            Due after five years                                                     250,000             255,048
                                                                             ---------------      --------------
                                                                           $       3,643,566           3,653,300
                                                                             ===============      ==============       
</TABLE>
                

(4)      Loans

         The Bank grants commercial,  installment, real estate construction, and
         other real estate loans to customers  primarily in  Sacramento  County.
         Generally,  the  loans are  secured  by  business  assets  and/or  real
         property.

         The  composition  of the Bank's  loan  portfolio  at  December 31 is as
follows:
<TABLE>

                                                                                   1995                 1994

            <S>                                                            <C>                   <C> 

            Commercial and industrial                                      $      13,798,300          12,733,800
            Real estate                                                           22,695,514          21,634,517
            Consumer                                                                 344,190             514,672
                                                                             ---------------      --------------
                                                                                  36,838,004          34,882,989
            Less:
                Deferred loan fees                                                  (235,143)           (245,379)
                Allowance for loan losses                                           (907,788)         (1,035,385)
                                                                             ---------------      --------------
                                                                           $      35,695,073          33,602,225
                                                                             ===============      ==============
</TABLE>

         Loans  which  were  sold  and  being   serviced  by  the  Bank  totaled
         approximately  $3,575,600 and $4,236,700 at December 31, 1995 and 1994,
         respectively.

         Nonaccrual loans total approximately  $913,600 and $685,600 at December
         31, 1995 and 1994,  respectively.  If interest on nonaccrual  loans had
         been accrued,  such income would have  approximated  $54,400 and 41,000
         for the years ended December 31, 1995 and 1994, respectively.




                                       100
<PAGE>




         Impaired  loans are loans for which it is  probable  that the Bank will
         not be able to collect all amounts due. As of December  31,  1995,  the
         Bank had  outstanding  balances of  approximately  $913,600 in impaired
         loans  which  had  valuation   allowances  of  $182,700.   The  average
         outstanding  balance of impaired  loans for the year ended December 31,
         1995  was  $799,600,  of  which  interest  income  recognized  was  not
         material.

         Changes in the allowance  for loan losses for the years ended  December
31 are as follows:
<TABLE>

                                                                                 1995                  1994
                                                                               ------                 ---------
            <S>                                                            <C>                       <C> 
            Balance, beginning of year                                     $     1,035,385              577,275
            Recoveries on loans charged off                                         80,682                3,869
            Provision for loan losses                                              293,265              990,000
            Loans charged off                                                     (501,544)            (535,759)
                                                                             -------------          -----------
            Balance, end of year                                           $       907,788            1,035,385
                                                                             =============          ===========

</TABLE>

(5)      Bank Premises and Equipment

         The  Bank's  premises  and  equipment  consisted  of the  following  at
December 31:
<TABLE>

                                                                                    1995                1994
            <S>                                                               <C>                     <C>   

            Leasehold improvements                                            $     33,373              33,373
            Furniture and fixtures                                                  28,858              28,858
            Equipment                                                              277,115             164,562
                                                                                ----------         -----------
                                                                                   339,346             226,793
            Less accumulated depreciation and amortization                        (216,453)           (176,826)
                                                                                ----------         -----------

                                                                              $    122,893              49,967
                                                                                ==========              ======
</TABLE>

         Depreciation  and  amortization  charged to expense  amounted  to 
         $39,630  and  $36,286 in 1995 and 1994, respectively.




                                       101
<PAGE>





(6)      Deposits
<TABLE>

         Deposits consisted of the following at December 31:
                                                                                   1995                 1994
            <S>                                                            <C>                        <C>    

            Noninterest bearing, demand                                    $       8,076,800           7,080,240
            Interest bearing savings                                                 387,154             426,223
            NOW accounts                                                           3,049,014           2,717,530
            Money Market                                                          12,833,040           8,706,738
            Time                                                                  22,880,661          20,528,235
                                                                             ---------------          ----------
                                                                           $      47,226,669          39,458,966
                                                                             ===============          ==========
</TABLE>

         As of December  31, 1995 and 1994,  the Bank had time  certificates  of
         deposit in denominations  of $100,000 or more totaling  $11,343,905 and
         $8,885,547,  respectively. Interest paid on these deposits was $658,637
         in 1995 and $384,144 in 1994.


(7)      Stock Option Plan

         In 1991,  the Bank granted 50,000 stock options to Directors and 23,500
         stock options to key employees who had substantial  responsibility  for
         the successful  operation of the Bank.  The 23,500  options  granted to
         employees were "incentive stock options" as defined in Internal Revenue
         Service Code Section  422A.  Options were granted at an exercise  price
         not less than the fair  market  value of the stock at the date of grant
         and become  exercisable  over varying periods of time. The option price
         for  Directors  was $8.25 and $7.50 for  employees.  As of December 31,
         1995 and 1994,  71,220 and 67,840,  respectively,  of the total options
         granted were  exercisable.  There were no options exercised during 1995
         or 1994.





                                      102
<PAGE>




(8)      Income Taxes
         The provision for income taxes  consists of the following for the years
ended December 31:
<TABLE>

                                                                                    1995             1994
            <S>                                                               <C>                  <C>  
            Current:  
                Federal                                                       $    223,346          189,928
                State                                                               62,427           38,942
                                                                                ----------      -----------
                  Total current expense                                            285,773          228,870
                                                                                ----------      -----------
            Deferred:
                Federal                                                           (200,579)        (209,254)
                State                                                              (59,520)         (42,698)
                                                                                ----------      -----------
                  Total deferred benefit                                          (260,099)        (251,952)
                                                                                ----------      -----------
                                                                              $     25,674          (23,082)
                                                                                ==========      ============
</TABLE>

         The tax effects of temporary  differences that give rise to significant
         portions of the  deferred  tax assets and  liabilities  at December 31,
         1995 and 1994 are presented below:
<TABLE>

                                                                                    1995             1994
          <S>                                                                 <C>                   <C>    
          Deferred tax assets:
                State franchise taxes                                         $     23,091           20,860
                Provision for loan losses                                          404,219          408,433
                Deferred loan fees                                                  58,591           65,200
                Section 481 adjustment                                                -               6,157
                Fixed asset depreciation                                            22,352           25,664
                Investment unrealized securities losses                               -              70,297
                Other                                                              369,285           51,131
                                                                                ----------          -------
                  Total gross deferred tax assets                                  877,538          647,742
                  Less valuation allowance                                         (40,000)            -
                                                                                ----------          -------
                  Deferred tax assets                                              837,538          647,742
            Deferred tax liabilities:
                Investment unrealized securities gains                              (4,088)            -
                Other                                                               (3,172)          (3,178)
                                                                                ----------          -------
                  Total gross deferred tax liabilities                              (7,260)          (3,178)
                                                                                ----------          -------
                  Net deferred tax assets                                     $    830,278          644,564
                                                                                ==========          =======

</TABLE>



                                      103
<PAGE>




         Net deferred tax assets are included in accrued interest receivable and
         other assets in the accompanying balance sheets.

         A valuation  allowance is provided when it is more likely than not that
         some  portion  of  the  deferred  tax  assets  will  not  be  realized.
         Management believes that the valuation allowance is sufficient to cover
         that  portion  that will not be fully  realized.  The net change in the
         total  valuation  allowance  for the years ended  December 31, 1995 and
         1994  was  an   increase   of  $40,000   and  a  decrease  of  $13,465,
         respectively.

         Income tax expense (benefit) attributable to operations was $25,674 and
         ($23,082) for the years ended December 31, 1995 and 1994, respectively,
         and differed  from the amounts  computed by applying  the U.S.  federal
         income tax rate of 34 percent to pretax  income  from  operations  as a
         result of the following:
<TABLE>

                                                                            1995                     1994
            <S>                                                           <C>                      <C> 

            Computed "expected" tax expense                                34.0%                    (34.0)%
            State franchise tax, net of Federal
                tax benefit                                                 4.0%                     (7.6)%
            Change in the beginning-of-the-year
                allowance for deferred tax assets
                allocated to income tax expense                            82.5%                   (109.9)%
            Other                                                          (9.5)%                   (11.8)%
            Refund of prior year federal and state
                taxes paid                                                (54.6)%                        -
            Increase in state franchise tax rate                           (3.5)%                   (25.2)%
                                                                      ---------                  --------
            Effective income tax rate                                      52.9%                   (188.5)%
                                                                      =========                  ========



</TABLE>



                                      104
<PAGE>




(9)      Transactions with Related Parties

         During the normal course of business, the Bank enters into transactions
         with related parties,  including Directors and their affiliates. In the
         opinion of management,  these  transactions,  which include  borrowings
         from the Bank, are made under  substantially the same terms,  including
         interest rates and collateral, as loans to unaffiliated parties and did
         not  involve  more than the normal  risk of  collectibility  or present
         other unfavorable conditions. Loan activity with related parties during
         1995 was as follows:

            Loans at December 31, 1994                    $      895,709
            Loan originations                                  2,330,500
            Loan payments                                       (932,936)
                                                              ----------  
            Loans at December 31, 1995                         2,293,273
                                                              ==========  

         At December 31, 1995 and 1994,  the Bank had deposits due to directors,
         officers and employees totaling $2,639,497 and $782,333, respectively.


(10)     Commitments and Contingencies

         (a)    Financial Instruments With Off-Balance Sheet Risk

         In the  normal  course  of  business,  the Bank is a party  to  certain
         financial  instruments  with  off-balance  sheet risk.  These financial
         instruments  include  commitments to extend credit in the form of loans
         or through standby letters of credit.  These  instruments  involve,  to
         varying degrees, elements of credit and interest rate risk in excess of
         the amounts  recognized in the balance sheet.  The contract  amounts of
         those  instruments  reflect the extent of  involvement  the Bank has in
         particular classes of financial instruments.

         The Bank's  exposure to credit loss in the event of  nonperformance  by
         the other party to the financial  instrument for  commitments to extend
         credit and standby  letters of credit is represented by the contractual
         notional  amount of those  instruments.  The Bank uses the same  credit
         policies in making  commitments and conditional  obligations as it does
         for on-balance sheet instruments.




                                      105
<PAGE>




         At December 31, 1995,  financial  instruments  whose  contract  amounts
         represent credit risk are as follows:
            Commitments to extend credit             $     8,835,000
                                                        =============
            Standby letters of credit                $       594,000
                                                        =============

         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,  property,  plant and
         equipment, and income-producing or other real estate.

         Standby  letters of credit are  conditional  commitments  issued by the
         Bank to  guarantee  the  performance  of a customer  to a third  party.
         Collateral  obtained,  if deemed necessary,  is varied. The credit risk
         characteristics  involved in  commitments  to extend credit and issuing
         letters  of  credit  are  essentially  the  same as those  involved  in
         outstanding loans (see note 4).

         In October  1994,  the FASB issued  Statement of  Financial  Accounting
         Standards No. 119,  Disclosure about Derivative  Financial  Instruments
         and Fair Value of  Financial  Instruments  (SFAS  119),  effective  for
         financial  statements issued for fiscal years ending after December 15,
         1994. This statement requires certain disclosures for off-balance sheet
         derivative financial instruments. As of December 31, 1995, the Bank has
         no off-balance sheet derivatives  requiring additional disclosure under
         the provisions of SFAS No. 119.

         (b)    Operating Leases

         The Bank leases its office premises under operating leases. The minimum
         annual lease payments are as follows:

                1996                                  $     80,919
                1997                                        80,919
                1998                                        67,432
                                                         ----------
                Total future minimum lease payments   $    229,270
                                                         ==========

         Lease rental expense  amounted to $93,026 and $92,916 in 1995 and 1994,
         respectively.




                                      106
<PAGE>




         (c)    Litigation

         The Bank is involved in legal  actions  arising in the normal course of
         business.  In the opinion of management,  after  consultation  with its
         legal counsel,  the ultimate disposition of these matters will not have
         a material adverse effect on the Bank's financial condition.


(11)     Regulatory Matters

         The  Federal  Deposit  Insurance   Corporation   (FDIC)  has  specified
         guidelines for purposes of evaluating a bank's capital adequacy.  Banks
         are required to satisfy two separate capital requirements.

         First, a bank must meet a minimum  leverage  capital ratio ranging from
         three to five percent  based upon the bank's CAMEL  (capital  adequacy,
         asset quality, management, earnings, and liquidity) rating. At December
         31, 1995, the Bank's leverage capital ratio was 8.46%.

         Second,  a bank must meet a minimum  risk-based  capital ratio of 8.0%.
         Risk-based  capital guidelines vary from leverage capital guidelines by
         redefining  the  components  of  capital,   categorizing   assets  into
         different risk classes,  and including certain  off-balance sheet items
         in the  calculation of the capital ratio.  The effect of the risk-based
         capital  guidelines  is that  banks  with  high risk  exposure  will be
         required to raise additional  capital while  institutions with low risk
         exposure  could,  with the  concurrence of regulatory  authorities,  be
         permitted to operate  with the lower  capital  ratios.  At December 31,
         1995, the Bank's risk-based capital ratio was 8.23%.

         The amount of  dividends  that may be paid  without the  express  prior
         approval of the Bank's  regulatory  authority  is limited to the Bank's
         current year net income  combined  with its retained net income for the
         preceding two years. The Bank paid no dividends in 1995 and 1994.




                                      107
<PAGE>




         On August 16, 1995, the Bank entered into a Memorandum of Understanding
         (the "Memorandum") with the Federal Deposit Insurance  Corporation (the
         "FDIC")   and   the   California    Superintendent    of   Banks   (the
         "Superintendent")  as a  result  of an  examination  of the Bank by the
         FDIC. The Memorandum requires that the Bank take certain actions within
         specified  periods of time.  These  requirements  include,  among other
         things,  that the Bank (a) revise and  formalize  various  policies and
         procedures  with respect to board and management  supervision,  lending
         and funds management,  and compliance with laws, rules and regulations;
         (b) review and maintain an adequate  allowance for loan losses; and (c)
         reduce the balance of classified assets to $2,500,000 and $2,000,000 by
         December 31, 1995 and June 30, 1996, respectively.

         As  of  December  31,  1995,   classified  assets  were   approximately
         $2,147,000,  compared  to  $3,082,000  at the time of the  examination,
         representing  a  reduction  of 30%.  The  level of loan  loss  reserves
         represented  2.5% of total loans at December 31, 1995, which management
         believes to be adequate.


(12)     Subsequent Events

         Subsequent  to year end, the Bank  incurred a $700,471 loss as a result
         of  an  unauthorized   overdraft  by  a  customer.  As  the  customer's
         activities  leading up to the overdraft were occurring during 1995, the
         entire  loss was  accrued as of  December  31,  1995 and is included in
         other liabilities in the accompanying balance sheets. Management,  with
         the advice of legal counsel,  is seeking to recover the amount from the
         customer.   Due  to  the   circumstances   surrounding  the  customer's
         activities, collectibility is uncertain.


(13)     Fair Values of Financial Instruments

         The  following  methods  and  assumptions  were  used  by the  Bank  in
         estimating its fair value disclosures for financial instruments:

            Cash and cash  equivalents:  The  carrying  amounts  reported in the
            balance sheet for cash and short-term  instruments  are a reasonable
            estimate of fair value.

            Investment  securities:  Fair values for  investment  securities are
            based on quoted market  prices,  where  available.  If quoted market
            prices are not  available,  fair  values are based on quoted  market
            prices of comparable instruments. (See note 3).




                                      108
<PAGE>





            Loans receivable:  For variable-rate  loans that reprice  frequently
            and with no significant change in credit risk, fair values are based
            on  carrying  values.   The  fair  values  for  other  loans  (e.g.,
            commercial  and industrial  loans and consumer  loans) are estimated
            using discounted cash flow analyses,  using interest rates currently
            being  offered for loans with similar  terms to borrowers of similar
            credit quality.

            Commitments to extend credit and standby letters of credit: The fair
            value of commitments is estimated  using the fees currently  charged
            to enter into similar agreements,  taking into account the remaining
            terms of the  agreements  and the  present  creditworthiness  of the
            counterparties.  For fixed-rate  loan  commitments,  fair value also
            considers the  difference  between  current levels of interest rates
            and the  committed  rates.  The fair  value of  letters of credit is
            based on fees  currently  charged for similar  agreements  or on the
            estimated cost to terminate them or otherwise  settle the obligation
            with the counterparties at the reporting date.

            Deposit  liabilities:  The fair values disclosed for demand deposits
            (e.g.,  interest and noninterest  checking,  passbook  savings,  and
            money  market  accounts)  are,  by  definition,  equal to the amount
            payable  on demand  at the  reporting  date  (i.e.,  their  carrying
            amounts). The fair values for fixed-rate certificates of deposit are
            estimated  using a  discounted  cash flow  calculation  that applies
            interest rates currently being offered on certificates to a schedule
            of aggregated expected monthly maturities on time deposits.

            Limitations:  Fair value  estimates are made at a specific  point in
            time, based on relevant market information and information about the
            financial instrument.  These estimates do not reflect any premium or
            discount  that could  result from  offering for sale at one time the
            Bank's entire holdings of a particular financial instrument. Because
            no market exists for a significant  portion of the Bank's  financial
            instruments,  fair value estimates are based on judgments  regarding
            future expected loss experience,  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 estimates.

            Fair value estimates are based on existing on-and  off-balance sheet
            financial  instruments  without  attempting to estimate the value of
            anticipated  future business and the value of assets and liabilities
            that are not considered  financial  instruments.  Other  significant
            assets and liabilities  that are not considered  financial assets or
            liabilities  include the mortgage  banking  operation,  deferred tax
            liabilities,  property,  plant, equipment and goodwill. In addition,
            the tax  ramifications  related to the realization of the unrealized
            gains  and  losses  can  have a  significant  effect  on fair  value
            estimates and have not been considered in may of the estimates.





                                      109
<PAGE>



<TABLE>
            The estimated fair values of the Bank's financial instruments are as
follows:
                                                                                 Carrying              Fair
                                                                                  Amount               Value
            <S>                                           <C>              <C>                    <C>    
            Financial assets:
                Cash and short-term investments                            $      10,728,984          10,728,984
                                                                             ===============      ==============
                Investment securities                                      $       3,653,300           3,653,300
                                                                             ===============      ==============
                Loans:
                   Fixed rate:
                      Commercial and industrial                            $       2,681,446           2,680,700
                      Consumer                                                       312,401             312,600
                                                                             ---------------      --------------
                           Total fixed rate                                        2,993,847           2,993,300
                           Variable rate                                          33,844,157          33,844,157
                                                                             ---------------      --------------
                      Less allowance for loan losses                                (907,788)           (907,788)
                      Net deferred origination fees                                 (235,143)           (235,143)
                                                                             ---------------      --------------
                           Net loans                                       $      35,695,073          35,694,526
                                                                             ===============      ==============
            Financial liabilities:
                Deposits:
                   Demand                                                  $      24,346,008          24,346,008
                   Certificates of deposit                                        22,880,661          23,169,000
                                                                             ---------------      --------------

                           Total deposits                                  $      47,226,669          47,515,008
                                                                             ===============      ==============
                                                              Contract           Carrying              Fair
                                                               Amount             Amount               Value
             Unrecognized financial instruments:
             Commitments to extend credit                 $  8,835,000              -                     44,000
                                                            ==========       ===============      ==============
             Standby letters of credit                    $    594,000              -                     29,700
                                                            ==========       ===============      ==============
</TABLE>





                                      110
<PAGE>




(14)     Prospective Accounting Pronouncements

         Long-Lived Assets

         In  March  1995,  the  Financial   Accounting  Standards  Board  issued
         Statement of Financial Accounting Standards No. 121, Accounting for the
         Impairment  of  Long-Lived  Assets  and  for  Long-Lived  Assets  to be
         Disposed of (SFAS 121).  The  provisions  of SFAS 121 are effective for
         financial  statements  issued for years  beginning  after  December 15,
         1995.  This  statement  requires  that  long-lived  assets and  certain
         identifiable  intangibles  to be held and used by an entity be reviewed
         for impairment  whenever  events or changes in  circumstances  indicate
         that  the  carrying   amount  of  an  asset  may  not  be  recoverable.
         Additionally,  this  statement  requires  that  long-lived  assets  and
         certain  identifiable  intangibles to be disposed of be reported at the
         lower of the  carrying  amount or fair value  less cost to sell.  It is
         Management's  opinion that applying the provisions of these  statements
         will not have a significant effect on the Bank's financial position.

         Stock Based Compensation

         In October  1995,  the  Financial  Accounting  Standards  Board  issued
         Statement of Financial  Accounting  Standards No. 123,  Accounting  for
         Stock Based  Compensation  (SFAS 123).  This statement is effective for
         fiscal years beginning after December 15, 1995. SFAS 123 defines a fair
         value  method of  accounting  for  employee  stock  options  issued and
         encourages all entities to adopt that method of accounting. However, it
         also  allows an entity to  continue  to measure  compensation  cost for
         stock option plans using the intrinsic value based method of accounting
         as  presented  by  Accounting  Principles  Board (APB)  Opinion No. 25,
         Accounting for Stock Issued to Employees.  Under this method,  the Bank
         makes pro forma  disclosures of net income and earnings per share as if
         the fair value based  method of  accounting  as defined by SFAS 123 had
         been applied. It is management's intention to account for stock options
         under APB Opinion No. 25.





                                      111
<PAGE>






Annex A           Plan of Acquisition and Merger dated January 23, 1997
Annex B           Fairness Opinion of Carpenter & Company
Annex C           Excerpts of Chapter 13 of the California Corporations Code
                  regarding Dissenters Rights





                                      112
<PAGE>


                                                  ANNEX A








                                       PLAN OF ACQUISITION AND MERGER

                                               BY AND BETWEEN

                                             SIERRAWEST BANCORP

                                              SIERRAWEST BANK

                                                    AND

                                              MERCANTILE BANK









                                      113
<PAGE>
                                 
                                                       
<TABLE>


                                             TABLE OF CONTENTS

                                                                                                   PAGE
                                                      



<S>      <C>      <C>                                                                              <C>
Section  1.       THE MERGER........................................................................1

         1.1      Effective Date....................................................................1

         1.2      Effect of the Merger..............................................................1

Section  2        CONVERSION AND CANCELLATION OF SHARES.............................................2

         2.1      Exchange Amount; Conversion of Shares of Mercantile Common Stock..................2

         2.2      Cash/Stock Election...............................................................3

         2.3      Fractional Shares.................................................................4

         2.4      Surrender of Mercantile Shares....................................................4

         2.5      No Further Transfers of Mercantile Shares.........................................5

         2.6      Adjustments.......................................................................5

         2.7      Personnel Matters.................................................................5

Section  3        COVENANTS OF THE PARTIES..........................................................6
         
         3.1      Mutual Covenants..................................................................6

                  (a)      Government Approvals.....................................................6

                  (b)      Notification of Breach of Representations, Warranties and
                           Covenants................................................................6

                  (c)      Financial Statements.....................................................6

                  (d)      Press Releases...........................................................7

                  (e)      Access to Properties, Books and Records; Confidentiality.................7

                  (f)      Additional Agreements....................................................7

                  (g)      Advice of Changes........................................................8

                  (h)      Legal Conditions to Merger...............................................8

         3.2      Covenants of Mercantile...........................................................8

                  (a)      Approval by Shareholders.................................................8

                  (b)      Compensation.............................................................8

                  (c)      Conduct of Business in the Ordinary Course...............................9




                                      114
<PAGE>


                  (d)      No Merger or Solicitation...............................................11

                  (e)      Changes in Capital Stock; Dividends.....................................11

                  (f)      Employee Welfare Benefit Plans..........................................11

                  (g)      Shareholder Lists and Other Information.................................11

                  (h)      Capital Commitments and Expenditures....................................12

                  (i)      Asset Review............................................................12

         3.3      Covenants of Sierra..............................................................12

                  (a)      Conduct of Business in the Ordinary Course..............................12

                  (b)      Dividends...............................................................13

                  (c)      Indemnification; Insurance..............................................13

Section 4         REPRESENTATIONS AND WARRANTIES OF MERCANTILE. ...................................14

         4.1      Corporate Status and Power to Enter Into Agreements..............................14

         4.2      Articles, Bylaws, Books and Records..............................................15

         4.3      Compliance With Laws, Regulations and Decrees....................................15

         4.4      Capitalization...................................................................15

         4.5      Equity Interest in Any Entity....................................................15

         4.6      Financial Statements, Regulatory Reports.........................................15

         4.7      Tax Returns......................................................................16

         4.8      Material Adverse Change..........................................................16

         4.9      No Undisclosed Liabilities.......................................................16

         4.10     Properties and Leases............................................................17

         4.11     Material Contracts...............................................................17

         4.12     Loans............................................................................18

         4.13     Restrictions on Investments......................................................18




                                      115
<PAGE>



         4.14     Employment Contracts and Benefits................................................18

         4.15     Collective Bargaining and Employment Agreements..................................19

         4.16     Compensation of Officers and Employees...........................................19

         4.17     Legal Actions and Proceedings....................................................19

         4.18     Execution and Delivery of the Agreement..........................................19

         4.19     Retention of Broker or Consultant................................................20

         4.20     Insurance........................................................................20

         4.21     Loan Loss Reserves...............................................................20

         4.22     Transactions With Affiliates.....................................................20

         4.23     Information in Sierra Registration Statement.....................................20

         4.24     Accuracy of Representations and Warranties.......................................20

Section 5         REPRESENTATIONS AND WARRANTIES OF SIERRA.........................................21

         5.1      Corporate Status and Power to Enter Into Agreements..............................21

         5.2      Articles, Bylaws, Books and Records..............................................21

         5.3      Compliance With Laws, Regulations and Decrees....................................21

         5.4      Capitalization...................................................................21

         5.5      Financial Statements, Regulatory Reports.........................................22

         5.6      Tax Returns......................................................................22

         5.7      Material Adverse Change..........................................................22

         5.8      Legal Actions and Proceedings....................................................22

         5.9      Execution and Delivery of the Agreement..........................................23

         5.10     No Undisclosed Liabilities.......................................................23

         5.11     No Material Environmental Liabilities............................................23

         5.12     No Material Liabilities Under ERISA..............................................24



                                      116
<PAGE>



         5.13     Retention of Broker or Consultant................................................24

         5.14     Loan Loss Reserves...............................................................24

         5.15     Information in Sierra Registration Statement.....................................24

         5.16     Accuracy of Representations and Warranties.......................................25

Section 6         SECURITIES ACT OF 1933; SECURITIES EXCHANGE ACT OF 1934..........................25

         6.1      Preparation and Filing of Registration Statement.................................25

         6.2      Effectiveness of Registration Statement and Listing of Shares....................25

         6.3      Sales and Resales of Common Stock................................................25

         6.4      Rule 145 and Related Matters.....................................................25

Section 7         CONDITIONS TO THE OBLIGATIONS OF SIERRA..........................................26
         
         7.1      Representations and Warranties...................................................26

         7.2      Compliance and Performance Under Agreement.......................................26

         7.3      Material Adverse Change..........................................................26

         7.4      Approval of Agreement............................................................26

         7.5      Officer's Certificate............................................................26

         7.6      Opinion of Counsel...............................................................26

         7.7      Absence of Legal Impediment......................................................26

         7.8      Effectiveness of Registration Statement..........................................26

         7.9      Government Approvals.............................................................26

         7.10     Tax Opinion......................................................................27

         7.11     Unaudited Financials.............................................................27

         7.12     Rule 145 Undertaking.............................................................27

         7.13     Closing Documents................................................................27

         7.14     Consents.........................................................................28

         7.15     Shareholder Agreements...........................................................28

         7.16     Financial Conditions to Closing..................................................28

                  (a)      Other Real Estate and Non-Performing Loans..............................28

                  (b)      Loan Loss Reserves......................................................28

Section 8         CONDITIONS TO THE OBLIGATIONS OF MERCANTILE......................................28

         8.1      Representations and Warranties...................................................28

         8.2      Compliance and Performance Under Agreement.......................................28

         8.3      Material Adverse Change..........................................................28

         8.4      Approval of Agreement............................................................28

         8.5      Officer's Certificate............................................................29

         8.6      Opinion of Counsel...............................................................29

         8.7      Absence of Legal Impediment......................................................29

         8.8      Effectiveness of Registration Statement..........................................29

         8.9      Government Approvals.............................................................29

         8.10     Tax Opinion or Ruling............................................................29

         8.11     Unaudited Financials.............................................................29

         8.12     Closing Documents................................................................29

         8.13     Fairness Opinion.................................................................29

Section  9        CLOSING..........................................................................29

         9.1      Closing Date.....................................................................29

         9.2      Delivery of Documents............................................................29

         9.3      Filings..........................................................................30

Section  10       EXPENSES.........................................................................30

         10.1     Merger Related Expenses..........................................................30





                                      117
<PAGE>



         10.2     Miscellaneous Mercantile Expenses................................................30

Section  11       AMENDMENT; TERMINATION...........................................................30

         11.1     Amendment........................................................................30

         11.2     Termination......................................................................30

         11.3     Termination......................................................................31

         11.4     Breach of Obligations............................................................31

         11.5     Termination and Expenses.........................................................31

Section  12       MISCELLANEOUS....................................................................32

         12.1     Notices..........................................................................32

         12.2     Binding Agreement................................................................32

         12.3     Survival of Representations and Warranties.......................................32

         12.4     Governing Law....................................................................32

         12.5     Attorneys' Fees..................................................................32

         12.6     Entire Agreement; Severability...................................................32

         12.7     Counterparts.....................................................................33
</TABLE>





                                      118
<PAGE>




                       Plan of Acquisition and Merger



                  THIS PLAN OF ACQUISITION  AND MERGER,  dated as of January 23,
1997  ("Agreement"),  is made by and between  SierraWest  Bancorp,  a California
corporation and a registered bank holding company under the Federal Bank Holding
Company Act of 1956 as amended ("BHC"),  SierraWest  Bank, a California  banking
corporation  (collectively "Sierra") and Mercantile,  a California state banking
corporation ("Mercantile").

WITNESSETH:

                  A. The Boards of  Directors of Sierra and  Mercantile  deem it
advisable and in the best interests of Sierra, Mercantile and their shareholders
that Sierra and Mercantile  enter into a business  combination  whereby Sierra's
wholly owned subsidiary,  SierraWest Bank a California state banking corporation
("Subsidiary") will be merged with Mercantile ("Merger"),  with Subsidiary being
the surviving corporation.

                  B. The Merger  Agreement  attached as Exhibit A is intended to
be filed with the California Secretary of State ("Merger Agreement") when it has
been approved by the Superintendent of Banks of the State of California.

                  C. The Merger is intended to qualify as a tax free
reorganization within the meaning of the provisions of Section 368 of the 
Internal Revenue Code of 1986, as amended (the "IRC").

                  D. Pursuant to the Merger,  each Mercantile  shareholder  will
receive,  in exchange for each share of  Mercantile  common stock and cash,  the
number of shares  of Sierra  common  stock  determined  in  accordance  with the
Exchange Ratio as more fully set forth in this Agreement ("Exchange Ratio").

                  NOW,  THEREFORE,  in  consideration  of the  premises  and the
mutual agreements contained herein, the parties hereto agree as follows:


                  Section 1.  THE MERGER.


                  1.1 Effective  Date.  Subject to the terms and  conditions  of
this  Agreement,  the  Merger  shall  become  effective  at the date on which an
executed  copy of the Merger  Agreement  has been  certified  by the  California
Secretary  of State and filed with the  Superintendent  of Banks of the State of
California  ("Superintendent")  pursuant  to  Section  2072  of  the  California
Financial  Code,  in each case on the  Closing  Date as defined  in Section  9.1
hereof ("Effective Date").


                  1.2 Effect of the Merger.  Subject to the terms and conditions
of this Agreement,  on the Effective Date,  Mercantile  shall be merged with and
into  Subsidiary  and  the  Subsidiary   shall  be  the  surviving   corporation
("Surviving  Corporation")  in  the  merger.  All  assets,  rights,  privileges,
immunities,  power,  franchises and interests of Mercantile in and to every type
of property (real, personal and mixed) and choses in action, as they exist as of
the Effective Date, including appointments, designations and nominations and all
other rights and  interests as trustee,  executor,  administrator,  registrar of
stocks and bonds,  guardian  of estate,  assignee,  receiver  and in every other
fiduciary capacity,  shall pass and be transferred to and vest in the Subsidiary
as the  Surviving  Corporation  by virtue of the  Merger on the  Effective  Date



                                      119
<PAGE>



without any deed,  conveyance  or other  transfer;  the  separate  existence  of
Mercantile  shall  cease  and  the  corporate  existence  of  Subsidiary  as the
Surviving  Corporation  shall continue  unaffected and unimpaired by the merger;
and the Surviving  Corporation  shall be deemed to be the same entity as each of
Mercantile  and  Subsidiary  and shall be  subject  to all of their  duties  and
liabilities of every kind and description.  The Surviving  Corporation  shall be
responsible  and  liable  for all the  liabilities  and  obligations  of each of
Subsidiary  and  Mercantile;  and any claim  existing  or  action or  proceeding
pending by or against  Subsidiary  or  Mercantile  may be  prosecuted  as if the
Merger had not taken place,  or the Surviving  Corporation may be substituted in
its place.  Neither the rights of  creditors  nor any liens upon the property of
Sierra,  Subsidiary or Mercantile shall be impaired by reason of the Merger. The
articles of  incorporation  of Subsidiary shall be the articles of incorporation
of the Surviving Corporation and the bylaws of Subsidiary shall be the bylaws of
the Surviving  Corporation.  On the Effective Date,  Subsidiary shall assume the
operations of, as successor to,  Mercantile.  On the Effective Date the board of
directors of Subsidiary will continue to serve until successors are duly elected
and qualified. Subsidiary shall remain a wholly-owned subsidiary of Sierra.


Section 2. CONVERSION AND CANCELLATION OF SHARES..


                  2.1 Exchange Amount; Conversion of Shares of Mercantile Common
Stock.

                   (a)     For purposes of this Agreement, capitalized terms
have the following meanings:

Mercantile Shares                     Issued and  outstanding  shares of
                                      Mercantile   no  par  value  common  stock
                                      ("Mercantile  Shares") as of the Effective
                                      Date.

Exchange Amount                       The Exchange Amount,  consisting of a
                                      Cash  Component  and a Stock  Component,
                                      shall be  $6,601,000  in the  aggregate as
                                      adjusted pursuant to Section 2.1(c) below.
                                      The Cash Component shall be reduced by the
                                      amount of cash  allocated  to  holders  of
                                      Mercantile Shares who exercise dissenters'
                                      rights pursuant to California Corporations
                                      Code Section 1300 et. seq.

Cash Component                        Cash  portion  of the  Exchange Amount
                                      equal to $3,300,500, less one-half of the
                                      amount  of any  adjustment  to the 
                                      Exchange Amount pursuant to Section 2.1(c)
                                      below.

Stock Component                       Newly issued shares of Sierra no par
                                      value common stock  ("Sierra  Shares")
                                      with an  aggregate  Market  Value equal to
                                      the  $3,300,500,   less  one-half  of  the
                                      amount of any  adjustment  to the Exchange
                                      Amount  pursuant to Section  2.1(c) below;
                                      provided  however,  the  total  number  of
                                      newly issued shares of Sierra common stock
                                      shall not exceed 250,000.

Per Share Cash Component              The  aggregate  Cash Component divided
                                      by  the   number  of outstanding
                                      Mercantile Shares  on  the Effective Date.

Per Share Stock Component             The aggregate Stock Component divided by
                                      the number of outstanding Mercantile 
                                      Shares  on  the Effective Date.

Exchange Ratio                        The Per Share Stock Component divided by
                                      the Market Value.

Market Value                          The average of the closing prices of the 
                                      Sierra  Shares  as  reported  in  the
                                      western edition of the Wall Street Journal
                                      for  the 20  trading  days  preceding  the
                                      Determination   Date.   For   purpose   of
                                      determining the average, the divisor shall
                                      be  only  those  days  on  which  a  trade
                                      occurs.

Determination Date                    The fifth business day preceding the
                                      Effective Date.

Adjustment Date                       The last day of the month preceding the 
                                      Determination Date.



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                  (b) On the Effective Date, by virtue of the Merger and without
any action on the part of the  holders of  Mercantile  Shares,  the  outstanding
Mercantile  Shares  (other than any shares as to which  dissenters'  rights have
been  perfected)  shall be converted  into the right to receive a combination of
cash and shares of the common stock,  no par value,  of Sierra  ("Sierra  common
stock" or "Sierra Shares") with an aggregate value equal to the Exchange Amount.
The Cash Component shall be one-half of the Exchange Amount. The Stock Component
will comprise the balance of the Exchange Amount, provided that the total number
of Sierra  Share to be issued  shall not exceed  250,000.  In the event that the
Stock  Component of the  Exchange  Amount  reaches the maximum  number of Sierra
Shares, the Cash Component shall not be adjusted.

                  (c)      The $6,601,000 Exchange Amount shall be adjusted as
follows:

                  (i) By subtracting  an amount derived by multiplying  .0744 by
the amount by which  Mercantile's  Core Deposits as of the  Adjustment  Date are
less than $22.7  million.  Core  Deposits  shall be defined as total  Mercantile
deposits  ("Total  Deposits")  less (i) all  certificates  of deposit;  (ii) all
brokered   deposits,   wholesale   deposits  or  deposits  of  other  depository
institutions;   (iii)  deposits   maintained  by  the  officers,   directors  or
shareholders  of Mercantile  or their related  interests to the extent that such
deposits exceed $1 million in the aggregate; and (iv) deposits opened or renewed
after the date of the  Definitive  Agreement  where the rate  exceeds  the rates
established by Sierra for similar deposit products.  Total Deposits for purposes
of this  calculation  shall  be  determined  by  averaging  the  Total  Deposits
reflected on the books of  Mercantile  for the 20 business  days  preceding  the
Adjustment Date.

                  (ii) By subtracting the amount by which the Mercantile's total
shareholder  equity as  adjusted  ("Adjusted  Shareholder  Equity") is less than
$4,912,000 or by adding the amount by which Adjusted  Shareholder Equity exceeds
$4,912,000.  Adjusted  Shareholder  Equity shall be computed in accordance  with
Generally  Accepted  Accounting   Principles  ("GAAP")  but  shall  reflect  the
following adjustments which may not be in accordance with GAAP:

                           (A) An amount  necessary to cause the reserves and/or
accruals  allocated to each asset  identified in Schedule 2.1(c)  (including
OREO) equal the amount shown in column H+I of Schedule  2.1(c).  A related tax 
adjustment  shall be made. In the event that any asset shown on Schedule 2.1(c) 
is  liquidated or repaid in whole or in part, then such asset,  including the
related  reserves  and/or  accruals, shall be  deleted  in whole or in part from
Schedule  2.1(c)  and the Adjusted Shareholder Equity as of the Adjustment Date.

                           (B) An amount necessary to cause  Mercantile's
general loan loss reserves on the Adjustment  Date for all assets not listed on
Schedule 2.1(c) equal the level of reserves required by using the Mercantile's
calculation methodology in effect as of December 31, 1996. A related tax adjust-
ment shall be made.

                           (C)  An  amount  of  additional   reserves
reflecting  any  adverse  change  in Mercantile's  assets as of the  Adjustment
Date and as determined in accordance with Section 3.2(i). A related tax adjust-
ment shall be made.

                           (D)  The  amount  necessary  to  increase  the
Valuation  Reserve  reflected  on Mercantile's  books to offset the  effect of
any  additional  carry-forward  tax losses resulting from additions to
Mercantile's  loan loss reserves or operating losses occurring after December 
31, 1996.


                  2.2 Cash/Stock Election..

                  The Exchange  Amount will be allocated to the Stock  Component
and the Cash Component in accordance the following  election and procedures (the
"Cash/Stock Election").

                  Each  Mercantile  shareholder  may elect to receive his or her
portion of the Exchange  Amount in either all Sierra  shares or all cash.  If no
election is made, the shareholder  will receive a Cash Component equal to 50% of
such shareholder's pro rata portion of the Exchange Amount and a Stock Component
of 50% of such shareholders pro rata portion of the Exchange Amount.



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<PAGE>



                  The Cash/Stock  Election is subject to the limitation that the
aggregate Cash Component for all  Mercantile  shareholders  may not be more than
$3,300,500. If the aggregate Cash Component is undersubscribed, the unsubscribed
portion of this minimum  aggregate Cash Component will be allocated pro rata (by
number of shares)  among all  Mercantile  shareholders;  if the  aggregate  Cash
Component is oversubscribed,  the Cash Component of each Mercantile  shareholder
electing to receive cash will be reduced pro rata (by number of shares  electing
to  receive  cash)  so that  the  aggregate  Cash  Component  of all  Mercantile
shareholders will equal $3,300,500, as adjusted. The total of the Cash Component
and the Stock  Component  will always equal the Exchange  Amount as adjusted and
subject to the  limitation  on the total number of Sierra Shares to be issued as
part of the Exchange Amount.

                  A  Mercantile  shareholder  need  not,  and  may  not,  make a
Cash/Stock  Election until after the Effective Date.  Immediately  following the
Effective  Date,  Sierra shall send to each  Mercantile  shareholder a letter of
transmittal  describing  the  Cash/Stock  Election in more detail and  providing
forms for making the Cash/Stock Election, as desired.

                  The Cash/Stock Election,  if made, must be made for all shares
held in the name of the Mercantile  shareholder.  A Mercantile  shareholder  who
holds shares in two or more capacities or in different names may make a separate
Cash/Stock Election for each name or capacity in which shares are held. However,
shares  represented  by a  single  certificate  may  make  only  one  Cash/Stock
Election.

                  Mercantile shareholders who make a Cash/Stock Election have no
assurance  that  they  will  receive  all  cash  or all  stock  or any  specific
proportion thereof.


                  2.3 Fractional  Shares.  Notwithstanding  any other  provision
hereof,  no fractional  shares of Sierra common stock shall be issued to holders
of Mercantile  Shares. In lieu thereof,  each such holder entitled to a fraction
of a share of Sierra common stock shall receive, at the time of surrender of the
certificate or certificates  representing  such holder's  Mercantile  Shares, an
amount  in cash  equal to the  Market  Value per  share of the  common  stock of
Sierra,  multiplied  by the fraction of a share of Sierra  common stock to which
such holder  otherwise  would be  entitled.  No such holder shall be entitled to
dividends,  voting  rights,  interest  on the value  of, or any other  rights in
respect of a fractional share.


                  2.4 Surrender of Mercantile Shares..

                  (a) Prior to the Effective Date, Sierra shall appoint any bank
or trust company (having capital of at least $50 million) mutually acceptable to
Mercantile and Sierra,  as exchange agent (the "Exchange Agent") for the purpose
of exchanging  certificates  representing the Mercantile Shares at and after the
Effective   Date,   Sierra  shall  issue  and  deliver  to  the  Exchange  Agent
certificates  representing  the  Sierra  Shares,  as  shall  be  required  to be
delivered to holders of  Mercantile  Shares.  As soon as  practicable  after the
Effective Date, each holder of Mercantile  Shares converted  pursuant to Section
2.1, upon surrender to the Exchange Agent of one or more  certificates  for such
Mercantile  Shares for  cancellation,  will be entitled to receive a certificate
representing  the number of Sierra Shares  determined in accordance with Section
2.1 and a payment in cash with  respect  to the Cash  Component  and  fractional
shares, if any, determined in accordance with Section 2.3.

                  (b) No dividends or other  distributions of any kind which are
declared  payable  to  stockholders  of record of the  Sierra  Shares  after the
Effective Date will be paid to persons entitled to receive such certificates for
Sierra  Shares  until such persons  surrender  their  certificates  representing
Mercantile Shares.  Upon surrender of such certificate  representing  Mercantile
Shares,  the holder thereof shall be paid,  without  interest,  any dividends or
other  distributions  with  respect to the Sierra  Shares as to which the record
date and payment date occurred on or after the  Effective  Date and on or before
the date of surrender.

                  (c) If any  certificate for Sierra Shares is to be issued in a
name other than that in which the certificate for Mercantile Shares  surrendered
in exchange  therefor is  registered,  it shall be a condition of such  exchange
that the person  requesting  such exchange  shall pay to the Exchange  Agent any
transfer  costs,  taxes or other expenses  required by reason of the issuance of
certificates  for such Sierra Shares in a name other than the registered  holder
of  the  certificate  surrendered,  or  such  persons  shall  establish  to  the
satisfaction  of Sierra and the Exchange  Agent that such costs,  taxes or other
expenses have been paid or are not applicable.



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<PAGE>



                  (d) All  dividends or  distributions,  and any cash to be paid
pursuant to the Cash Component or Section 2.3 in lieu of fractional  shares,  if
held  by  the  Exchange  Agent  for  payment  or  delivery  to  the  holders  of
unsurrendered  certificates  representing Mercantile Shares and unclaimed at the
end of one year from the  Effective  Date,  shall  (together  with any  interest
earned  thereon) at such time be paid or  redelivered  by the Exchange  Agent to
Sierra, and after such time any holder of a certificate  representing Mercantile
Shares who has not  surrendered  such  certificate  to the Exchange Agent shall,
subject to applicable law, look as a general creditor only to Sierra for payment
or delivery of such dividends or distributions or cash, as the case may be.


                  2.5 No  Further   Transfers  of  Mercantile   Shares.  At  the
Effective  Date, the stock  transfer books of Mercantile  shall be closed and no
transfer of Mercantile Shares theretofore outstanding shall thereafter be made.


                  2.6 Adjustments.  If,  between the date of this  Agreement and
the Effective Date, the outstanding  Sierra common stock shall have been changed
into a  different  number  of  shares  or a  different  class by  reason  of any
reclassification, recapitalization, split up, combination, exchange of shares or
readjustment,  or a stock dividend  thereon shall be declared with a record date
within such period,  the number of Sierra  Shares to be issued and  delivered in
the  Merger  in  exchange  for  each  outstanding   Mercantile  Share  shall  be
correspondingly adjusted. For purposes of this Section 2.6, conversion of Sierra
convertible debentures shall not be considered an adjustment to Sierra Shares.


                  2.7 Personnel Matters..

         (a)  Employment At Effective  Date. Not later than 30 days prior to the
Determination Date, Sierra shall notify Mercantile in writing of those employees
who shall be eligible  for  employment  by Sierra or  Subsidiary  following  the
Effective Date. Any Mercantile employee who is not identified by Sierra as being
eligible for employment shall be terminated by Mercantile  immediately  prior to
the Effective Date.  Mercantile shall make severance payments to those employees
who are not  eligible  for  employment  by  Sierra in the  amount  for each such
employee of not less than two weeks  salary plus one  additional  week of salary
for each year served.  Mercantile may, in its sole  discretion,  make additional
special bonus payments to retain  employees who are deemed necessary to complete
the Merger.  All such payments  shall have been included in the  calculation  of
Adjusted  Shareholder  Equity  and shall be paid or  accrued  on or  before  the
Adjustment  Date.  Such  payments  shall  be  conditioned  upon the  receipt  of
enforceable  releases  from  such  employees.  In  terminating  such  employees,
Mercantile shall abide by all internal  policies and all legal  requirements for
termination of employment. From the date of this agreement through the Effective
Date,  Mercantile  shall  consult  with the human  resources  representative  of
Sierra,  who shall be designated  in writing to  Mercantile by Sierra,  and keep
that  representative  advised as to all matters related to employment.  From the
day of the Effective Date or any time thereafter, former employees of Mercantile
who are employed by Sierra  following  the  Effective  Date may be terminated by
Sierra,   with  or  without  cause,  for  any  reason  not  prohibited  by  law.
Notwithstanding  anything to the  contrary  described in this  paragraph  above,
Mercantile  employee  Denis  Long shall be  eligible  for  employment  by Sierra
provided  that he and Sierra shall have agreed to the terms of  employment on or
before the Determination  Date;  provided,  in the event that he has not reached
agreement  with  Sierra by such date,  Mercantile  shall have no  obligation  to
terminate Denis Long prior to the Effective Date.

         (b) Retirement  Benefits.  Employees of Subsidiary formerly employed by
Mercantile  on the  Effective  Date shall be eligible for  participation  in the
Sierra 401(k) plan and employee  stock option plan at the earliest  normal entry
date  following  the  Effective  Date  as  allowed  by  applicable  law  and the
provisions of Sierra's  benefit  plans,  so long as such employees then meet the
eligibility  requirements  for  participation  in the  Sierra  plan.  The former
employees  of  Mercantile  who are employed by  Subsidiary  will be credited for
years of prior  service  with  Mercantile  for vesting  (non-forfeitability)  of
accrued  benefits in the Sierra plans to the fullest extent such credit for such
prior  service  is  permitted  by  Sierra's  plans  and by the  laws,  rules and
regulations of the Internal Revenue Service and the Employee Income Security Act
of 1974, as amended.




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<PAGE>


         (c)      Other Benefit Plans.

                  (i) After the Effective  Date, any or all  Mercantile  welfare
benefit  plans shall be  terminated  by Sierra.  Subsidiary  employees  formerly
employed by Mercantile immediately prior to the Effective Date shall be eligible
for  participation  in any existing  Sierra plan, so long as such employee would
otherwise be eligible to participate in such plan.

                  (ii) Employees of Subsidiary  formerly  employed by Mercantile
on the Effective Date will receive credit for length of service with  Mercantile
for  determination  of  eligibility  or  participation  in the Sierra (A) health
service  plans,  or  (B)  long-term  disability,  voluntary  accident  and  life
insurance plans.

         (d)      Other Benefits.

                  (i) Employees of Subsidiary formerly employed by Mercantile on
the Effective Date will retain vacation  benefits  accrued with Mercantile prior
to the  Effective  Date,  subject to  Sierra's  maximum  accrual  and  carryover
limitations  for such  benefits;  and will also  retain the amount of sick leave
benefit  eligibility on Mercantile's  records prior to the Effective Date, to be
available subject to Sierra's policy for sick leave benefits; provided, however,
Mercantile  shall  have  accrued  the  cost of such  benefits  on the  books  of
Mercantile on or before the Adjustment  Date.  Following the Effective Date, all
employees  shall be subject to the  standard  policies  of Sierra for accrual of
such benefits.

                  (ii) Employees of Subsidiary  formerly  employed by Mercantile
on the Effective  Date will be subject to the  severance  policies in effect for
all Sierra employees.


Section 3. COVENANTS OF THE PARTIES..


                  3.1 Mutual Covenants.


                  (a) Government  Approvals.  Each party will use its reasonable
best  efforts  in good  faith  to take or  cause  to be  taken  as  promptly  as
practicable  all such steps  within their  reasonable  control to obtain (i) the
waiver  of an  application  or prior  approval  of the  Merger  by the  Board of
Governors of the Federal  Reserve  System  ("FRB") under the BHC, (ii) the prior
approval of the  Superintendent  to the Merger;  (iii) the prior approval of the
Federal Deposit Insurance  Corporations  ("FDIC") under the Bank Merger Act, and
(iv) all other consents and approvals of government  agencies as are required by
law or  otherwise,  and  shall  do any and all  acts  and  things  necessary  or
appropriate in order to cause the Merger to be consummated on the terms provided
in the Merger  Agreement  and this  Agreement  as promptly as  practicable.  The
approvals referred to in clauses (i)-(iv) of this Section 3.1(a) are hereinafter
referred to as the "Government Approvals." Each party shall respond to a written
request for  information  sought by the other for the purpose of  obtaining  the
Government  Approvals  promptly and in all cases within 10 days after receipt of
such request.


                  (b) Notification of Breach of Representations,  Warranties and
Covenants. Each party shall promptly give written notice to the other party upon
becoming  aware of the  occurrence or impending or threatened  occurrence of any
event  which  would  cause  or  constitute  a  material  breach  of  any  of the
representations,  warranties or covenants of that party contained or referred to
in the Merger  Agreement or this  Agreement  and shall use its  reasonable  best
efforts to prevent the same or remedy the same promptly.


                  (c) Financial Statements.

                  (i) Each  party has  delivered  or shall  deliver to the other
party  promptly  after they become  available true and correct copies of audited
financial  statements  as of  such  date  and  covering  such  period  as may be
necessary to satisfy the minimum  requirements  of the  Securities  and Exchange
Commission  ("Commission")  and other  governmental  authorities having approval
authority over the Merger. The financial statements for such year ends have been
or shall be audited by their respective  independent certified public accounting
firms  which  have been  engaged  in the past and  include  or shall  include an
unqualified  opinion  of each such  accounting  firm,  to the  effect  that such
financial  statements  have been prepared in accordance  with GAAP  consistently
applied and present fairly, in all material respects, the consolidated financial
position,  results of operations and cash flows of the respective parties at the
dates indicated and for the periods then ending.



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<PAGE>



                  (ii) Each  party  shall  provide to the other  party  promptly
after  they  become  available  copies  of all  financial  statements  and proxy
statements  issued  or  to be  issued  to  either  party's  shareholders  and/or
directors after December 31, 1996, and at or prior to the Effective Date.

                  (iii) Each party has delivered or shall deliver,  to the other
party true and  complete  copies of its Annual  Report to  Shareholders  for the
years ended December 31, 1995,  1994 and 1993, all periodic  reports  (including
interim  quarterly  financial  statements)  since  December 31, 1993,  all proxy
statements  and other  written  material  furnished  to its  shareholders  since
December 31, 1993,  and all other  material  reports,  including  year-end  call
reports,  relating to Sierra and Mercantile  filed by Sierra and Mercantile with
the FRB , the  Superintendent  or the FDIC during 1993  through 1996 and in 1997
prior to the Effective Date. As of its date, each of the documents  described in
the preceding  sentence  complied or shall comply in all material  respects with
all legal and regulatory requirements applicable thereto.


                  (d) Press  Releases.  Neither  party  shall  issue  any  press
release or written statement for general circulation  relating to this Agreement
unless  previously  provided to the other party for review and  approval  (which
approval will not be unreasonably  withheld or delayed) and shall cooperate with
the other party in the  development  and  distribution  of all news releases and
other public information  disclosures with respect to the Merger, this Agreement
or the Merger Agreement;  provided that either party may, without the consent of
the other  party,  make any  disclosure  with regard to this  Agreement  that it
determines,  upon advice of counsel,  is required  under any  applicable  law or
regulation.


                  (e) Access to Properties, Books and Records;  Confidentiality.
Prior to the  Effective  Date,  each party shall (except as may be prohibited by
applicable  law) give the other party and its  officers,  employees,  agents and
representatives  full access,  during normal  business hours and upon reasonable
notice,  to all of its  properties,  books,  contracts,  records and  facilities
including, but not limited to, the corporate, financial and operational records,
papers,  reports,  instructions,   procedures,  tax  returns  and  filings,  tax
settlement letters,  material contracts or commitments,  regulatory examinations
and  correspondences.  Each party shall also use its reasonable  best efforts to
cause its independent  accounting firm to make available to the other party, its
accountants,  counsel and other agents,  to the extent  reasonably  requested in
connection with such review, such firm's work papers and documentation  relating
to its work papers and its audits of the books and  records of each party.  Each
party shall make available to the other  originals or copies,  at the responding
party's  election,  of such  documents  and records as the other may  reasonably
request.  The availability or actual delivery of such  information  about either
party shall not affect the covenants,  representations  and warranties of either
party contained in this Agreement and in the Merger Agreement.  Each party shall
respond to any written request for information  promptly and in all cases within
10 days after receipt of such request.  Each party shall use its reasonable best
efforts to cause its officers,  directors,  employees, auditors and attorneys to
cooperate with the other in its reasonable  requests for information except that
no information which is reasonably  determined to be the subject of the attorney
client  privilege  shall be required to be disclosed.  Each party shall treat as
confidential  all such  information  in the same  manner  as each  party  treats
similar  confidential   information  of  its  own,  and  if  this  Agreement  is
terminated,  each  party  shall  continue  to  treat  all  such  information  as
confidential   and  to  cause  its  employees  to  keep  all  such   information
confidential  and shall return such documents  therefore  delivered by the other
party as the other party shall request, and shall use such information, or cause
it to be  used,  solely  for the  purposes  of  evaluating  and  completing  the
transactions contemplated hereby; provided that each party may disclose any such
information  to the  extent  required  by federal  or state  securities  laws or
otherwise  required by any  governmental  agency or  authority,  or by generally
accepted accounting principles. The foregoing confidentiality  obligations shall
not apply in respect of any information publicly available or to any information
previously  known to the party in  question,  the use of which is not  otherwise
restricted.


                  (f) Additional  Agreements.  In case  at any  time  after  the
Effective  Date any further  action is  necessary  or desirable to carry out the
purposes of this Agreement or to vest the Surviving  Corporation with full title



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to all properties,  assets, rights, approvals,  immunities and franchises of any
of the parties to the Merger, the proper officers and directors of each party to
this  Agreement  shall  take  all such  necessary  action  as may be  reasonably
requested by, and at the sole expense of,  Sierra.  Pending the Effective  Date,
Sierra and Mercantile shall consult with one another and cooperate as reasonably
requested by Sierra to facilitate the integration of their respective operations
as promptly as practicable  after the Effective  Date.  Such  cooperation  shall
include,  if requested,  communicating  with employees,  consultation  regarding
material  contracts,  renewals,  and capital  commitments  to be entered into by
Mercantile, coordination regarding third-party service agreements with a view to
providing common products and services as expeditiously as practicable following
the Effective  Date,  making  arrangements  for employee  training  prior to the
Effective  Date and taking action to  facilitate  an orderly  conversion of data
processing  operations to occur promptly following the Effective Date,  provided
that the  cooperation  required under this Section 3.1(f) shall not be deemed to
require actions that would materially delay or impede the Merger.


                  (g) Advice of Changes.  Sierra and  Mercantile  shall promptly
advise  the  other  party  of any  change  or  event  having,  or that  would be
reasonably  likely to have, a material adverse effect on it or which it believes
would or would be reasonably  likely to cause or constitute a material breach of
any of its representations, warranties or covenants contained herein.


                  (h) Legal  Conditions to Merger. Each of Sierra and Mercantile
shall use their  reasonable best efforts (a) to take, or cause to be taken,  all
actions  necessary,  proper,  or  advisable  to comply  promptly  with all legal
requirements  which may be imposed on such party with respect to the Merger and,
subject to the respective  conditions  set forth in Sections 7 and 8 hereof,  to
consummate  the  transactions  contemplated  by this Agreement and (b) to obtain
(and to cooperate  with the other party to obtain) any  consent,  authorization,
order or approval of, or any exemption by, any governmental entity and any other
third  party  which is  required  to be  obtained  by  Mercantile  or  Sierra in
connection  with the  Merger  and the other  transactions  contemplated  by this
Agreement.


                  3.2 Covenants of Mercantile.


                  (a) Approval  by  Shareholders.  Mercantile  shall  cause  the
Merger, this Agreement and the Merger Agreement to be submitted promptly for the
approval of its shareholders in the most expeditious manner available, either by
consent solicitation of sufficient  shareholders to cause approval of the Merger
or at a meeting to be called and held in  accordance  with  applicable  laws. If
such approval is to be taken by meeting Mercantile shall cause appropriate proxy
materials  ("Proxy  Materials")  to be prepared and, if  necessary,  approved by
appropriate regulatory authorities as promptly as practicable and, when approved
or  otherwise  deemed  effective,  with any  amendments  thereto that may in the
judgment of its counsel be necessary or desirable,  to be mailed to shareholders
of  Mercantile.  Subject  to the  fiduciary  duty of the Board of  Directors  of
Mercantile,  the Proxy  Materials shall include  therein a  recommendation  that
Mercantile shareholders vote to approve the proposed Merger. The Proxy Materials
shall be subject to prior approval by Sierra. In the event that such is required
by applicable  securities laws,  Sierra shall prepare for inclusion in the Proxy
Materials an  appropriate  registration  statement/prospectus  which  Mercantile
shall assist with by providing such information and documents as may be required
in an  expeditious  and timely  manner.  Unless  approval is provided by consent
solicitation,  Mercantile shall hold its shareholder meeting as soon as possible
but no  later  than  June  15,  1997,  unless  prevented  from  doing  so by the
regulatory  authorities  or by delays in obtaining or conditions  imposed by the
Government   Approvals.   Subject  to  its  continuing  fiduciary  duty  to  the
shareholders of Mercantile,  the members of the Board of Directors of Mercantile
shall  at all  times  prior  to and  during  such  meeting  of its  shareholders
recommend that the transactions contemplated hereby be adopted and approved and,
subject to such duty, use its reasonable best efforts to cause such adoption and
approval.


                  (b) Compensation.   Except  for  standard   annual  review  of
employees  and the normal  wage  increases  incident  thereto and subject to the
provision of Section  2.7(a)  hereof,  Mercantile  shall not make or approve any
increase in the  compensation  payable or to become  payable by it to any of its
directors,   officers,  employees  or  agents  (including  but  not  limited  to
compensation  through  any  profit  sharing,  pension,  retirement,   severance,
incentive or other employee benefit program or arrangement); nor shall any bonus
payment or any  agreement or  commitment  to make a bonus  payment be made other
than  the  obligations  to make  distributions  reflecting  1996  profits  under
Mercantile's  profit sharing plan, nor shall any stock option,  warrant or other
right to acquire  capital  stock be granted;  nor shall any existing  employment
agreement  be extended or renewed or  modified  on terms more  favorable  to the
employee than those that are currently contained in such contract; nor shall any
employment agreement (other than any such employment agreement that may arise by
operation of law upon the hiring of any new employee) or consulting agreement be
entered  into by  Mercantile  with any such  directors,  officers,  employees or
agents  unless  Sierra  has given  its  prior  written  consent.  Without  prior
notification to Sierra,  Mercantile shall not hire any new employee at an annual
rate in excess of current  customary  practice  or, in any  event,  in excess of
$40,000 per year.



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                  (c) Conduct of Business in the Ordinary Course.  Prior to the
Effective Date:

                  (i) Except as  expressly  contemplated  or  permitted  in this
Agreement,  Mercantile  shall conduct its  businesses in the Ordinary  Course as
heretofore conducted.  For purposes of this Agreement,  the "Ordinary Course" of
Mercantile  shall  consist  of  banking  and  related  businesses  as  presently
conducted or consistent with good banking practices or by it and permitted under
applicable laws. Unless Sierra has given its previous written consent to any act
or omission to the  contrary  (which  Sierra shall not  unreasonably  withhold),
Mercantile  shall,  until the  Effective  Date,  cause its officers to use their
reasonable best efforts to:

                           (A)      preserve its business and business organiza-
tions intact;

                           (B)      preserve  the  good  will  of  customers
and  others  having   business relations  with it and take no action that would
impair the benefit to the other party of the goodwill of it or the other
benefits of the Merger;

                           (C)      consult  with Sierra as to the making of any
decisions or the taking of any actions in matters other than in the Ordinary
Course and cooperate with all reasonable  requests of Sierra that, in the
reasonable  judgment of Sierra,  are necessary  to  successfully  complete  the
transactions contemplated by this Agreement, including permitting a designated 
representative or representatives of  Sierra  to  attend  and  participate (but
not  vote) in all loan  committee meetings and board of directors  meetings,  
provided such Sierra  representative may be excluded from any portion of a board
of directors meeting which relates to the Merger or any examination report or
response thereto, or is reasonably determined to be the subject of the attorney
client privilege;

                           (D)      maintain  its  properties  in  customary
repair,   working  order  and condition (reasonable wear and tear excepted);

                           (E)      comply in all material  respects with all
laws,  regulations and decrees applicable to the conduct of its business;

                           (F)      keep in force at not  less  than its present
limits  all  policies  of insurance,  including  deposit  insurance of the FDIC,
to the extent  reasonably practicable  in light  of the  prevailing  market
conditions  in the  insurance industry;

                           (G)       except as provided in Section  2.7(a) keep
available to the other party the services of its present  officers and employees
(it being  understood  that both parties  shall have the right to  terminate the
employment of any of its officers or employees in accordance with its
established employment procedures);

                           (H)      comply  in  all  material  respects  with  
all  orders,  agreements  and memoranda of  understanding  with  respect to it 
made by or with any  regulatory authority of competent jurisdiction, and
promptly forward to the other party all communications  received from any such 
authority that are not prohibited by such authority  from being so  disclosed  
and inform the other party of any  material restrictions imposed by any govern-
mental authority on its business;

                           (I)      file in a  timely  manner  (taking  into
account  any  extensions  duly obtained) all reports,  tax returns and other 
documents required to be filed with federal, state, local and other authorities;



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                           (J)      conduct an  environmental  audit prior to  
foreclosure  on any  property concerning  which it has knowledge,  or should 
have knowledge,  that asbestos or asbestos-containing material, PCB's or PCB-
contaminated materials, any petroleum product,  or  hazardous  substance  or
waste (as  defined  under any  applicable environmental  laws)  was  or is
present,  manufactured,  recycled,  reclaimed, released, stored, treated, or 
disposed of, and provide the results of such audit to and consult  with the 
other party  regarding  the  significance  of the audit prior to the foreclosure
on any such property;

                           (K)      not sell, lease,  pledge,  assign,  encumber
or otherwise dispose of any of its assets  except other real estate owned or 
other  property in the Ordinary Course,  in each case for adequate value,  with-
out  recourse and consistent with its customary practice;

                           (L)      not make,  renegotiate,  renew, increase,
extend or purchase any loans, advances or loan commitments, in each case to any
of its officers,  directors or any affiliated or related  persons of such  
directors or officers  except in the Ordinary  Course   consistent  with  its  
established  loan  procedures  and  in compliance with FRB Regulation O;

                           (M) not take any action to create,  relocate or
terminate  the  operations of any banking office or branch, or to form any new 
subsidiary or affiliated entity;

                           (N)      not settle or otherwise  take any action to
release or reduce any of its rights with respect to any litigation  involving a
claim of more than $50,000 in which it is a party without the consent of Sierra 
which consent  shall not be unreasonably withheld; and

                           (O)      maintain an allowance for loan losses which,
in addition to meeting the requirements  of Section  2.1(c),  shall be in 
substantial compliance  with the comments of the FDIC in its most recent Report 
of Examination.

                  (ii) Mercantile  shall not,  without first having obtained the
written  consent of Sierra which  consent  shall not be  unreasonably  withheld,
cause its officers to:

                           (A)      commit itself to any loan or renewal or
restructure of an existing loan with a  principal  amount in excess of  $40,000
if  unsecured,  or in excess of $80,000 and with a  loan-to-value  ratio above 
75% if secured by real  property, provided  that  Sierra's  consent  shall be 
deemed  given  unless it objects and states the basis of its objection in 
writing,  or verbally  with prompt written confirmation, within one business day
after receipt of written notice  directed to the Chief  Credit  Officer of 
Sierra,  together  with  sufficient  supporting information to allow Sierra to 
make an informed  judgment,  and Sierra shall not unreasonably withhold its con-
sent; provided,  further, that any consent given by Sierra  shall be  binding 
only if  given  by such  person  or  persons  who are identified  in writing by
Sierra;  provided,  further,  no loan with an interest rate below the rate for 
loans  comparable  to rates for similar  loans by Sierra shall  be  granted  or
approved  by  Mercantile.  Notwithstanding  any  of  the provisions of this
paragraph,  Mercantile  may proceed with making any loan not consented  to by  
Sierra  and such loan  shall be added to  Schedule  2.1(c),  a reserve shall be 
established for such loan in accordance with Sierra methodology and such loan 
shall be reviewed by the independent loan reviewer as set forth in Section 
2.1(c)(ii)(C);

                           (B)      purchase or sell any  investment  security
with a maturity in excess of three years;

                           (C)      issue any  certificate  of deposit  with a
rate of interest in excess of 50 basis points above the rate sheets provided 
weekly to Mercantile by Sierra; or

                           (D)      enter into or renew any contract  having a
duration  extending  beyond 9 months from the date of this Agreement, whether or
not in the Ordinary Course.

                  (iii) It is understood  and agreed by the parties  hereto that
any  consent  sought of Sierra or  required  by  Mercantile  pursuant to Section
2.4(c)  or any other  provision  of this  Agreement  shall be deemed to be given
following five (5) business days advanced notice by Mercantile to Sierra,  which
notice shall  include such  information  as Sierra shall  reasonably  request or
unless the comments of Sierra have been addressed by Mercantile.



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                  (d) No Merger or Solicitation.

                  (i) Prior to the Effective  Date,  Mercantile and its Board of
Directors  and officers  shall not initiate  negotiations  toward,  or otherwise
effect  or agree to  effect,  any  Business  Combination  involving  Mercantile,
acquire or agree to acquire  any of its own capital  stock or the capital  stock
(except in a fiduciary  capacity) or assets  (except in the Ordinary  Course) of
any other entity,  or commence any  proceedings  for winding up and  dissolution
affecting it. "Business  Combination" shall mean any Merger, sale or purchase of
a subsidiary,  sale or purchase of a substantial portion of any entity's assets,
or  tender  offer  or  other  means  of  acquisition  of  substantially  all the
outstanding capital stock of any entity.

                  (ii) Prior to the Effective Date,  neither  Mercantile nor any
officer,  director  or  affiliate  of  Mercantile,  nor any  investment  banker,
attorney,  accountant  or other  agent,  advisor or  representative  retained by
Mercantile shall (A) solicit or initiate, directly or indirectly, any inquiries,
discussions or proposals  for,  continue,  propose or enter into  discussions or
negotiations  looking  toward,  or enter  into any  agreement  or  understanding
providing  for, any  Business  Combination  with  Mercantile;  or (B)  disclose,
directly  or  indirectly,   any  nonpublic   information  to  any   corporation,
partnership,  person or other entity or group concerning  Mercantile's  business
and properties or afford any such other party access to Mercantile's properties,
books or records  or  otherwise  assist or  encourage  any such  other  party in
connection with the foregoing  except in satisfaction of the Board of Directors'
fiduciary duties as determined on the advice of counsel; or (C) furnish or cause
to be furnished any information  concerning the business,  financial  condition,
operations,  properties or prospects of Mercantile to another person, having any
actual or  prospective  role with  respect  to any such  transaction,  provided,
however,  that  the  Mercantile  shall  not  be  prohibited  from  reviewing  or
responding in any way to unsolicited proposals involving such transactions.

                  (iii)  Mercantile  shall  notify  Sierra  immediately  of  the
details  of any  indication  of  interest  of  any  person,  corporation,  firm,
association  or group to acquire by any means a  controlling  interest  in it or
engage in any Business Combination with it.


                  (e) Changes in Capital Stock;  Dividends. At or after the date
hereof and at or prior to the  Effective  Date,  except  with the prior  written
consent of Sierra or as otherwise provided in this Agreement:

                  (i) Mercantile  shall not amend its Articles of  Incorporation
or Bylaws;  make any change in its  authorized,  issued or  outstanding  capital
stock or any other equity security;  issue,  sell,  pledge,  assign or otherwise
encumber or dispose of, or  purchase,  redeem or otherwise  acquire,  any of its
shares of capital stock or other equity  securities or enter into any agreement,
call or  commitment  of any  character to do so; grant or issue any stock option
relating  to,  right to acquire,  or security  convertible  into,  shares of its
capital stock or other equity security;  purchase,  redeem,  retire or otherwise
acquire  (other than in a  fiduciary  capacity)  any shares of, or any  security
convertible  into,  capital stock or other equity security of its companies,  or
agree to do any of the foregoing, except as expressly provided herein; and

                  (ii) Mercantile  shall not declare,  set aside or pay any cash
or stock dividend or other distribution in respect of its common stock.


                  (f) Employee Welfare Benefit Plans. Mercantile agrees that its
employee  welfare  benefit  plans,  as defined in Section 3(1) of ERISA,  may be
terminated,  frozen,  modified or merged into Sierra's  employee welfare benefit
plans as of or after the Effective  Date, as determined by Sierra,  in each case
consistent  with Section  4980B of the Internal  Revenue  Code  ("IRC").  On the
Effective Date,  Mercantile  employees will commence  participation  in Sierra's
welfare benefit plans on the same terms as Sierra employees.


                  (g) Shareholder  Lists and Other Information.  After execution
hereof,  Mercantile  shall  from time to time make  available  to  Sierra,  upon
request,  a list of its  shareholders  and their  addresses,  a list showing all



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transfers  of the its common  stock and such other  information  as Sierra shall
reasonably   request  regarding  both  the  ownership  and  prior  transfers  of
Mercantile's common stock.


                  (h) Capital Commitments and Expenditures.  After the execution
of this  Agreement,  no new  capital  commitments  shall be entered  into and no
capital  expenditures shall be made by Mercantile,  including but not limited to
creation of any new branches and acquisitions or leases of real property, except
commitments  or  expenditures  within  existing  operating  and capital  budgets
furnished  to and  approved  by Sierra  and  commitments  and  expenditures  not
exceeding $15,000 in the aggregate.


                  (i) Asset  Review.  Mercantile  shall  continue  to engage its
internal  asset review  examiners to identify  potential  losses with respect to
loans and other  assets on its books and who shall have  reviewed  all NPAs,  as
defined in Section 7.16(a) hereof,  and other classified or criticized assets as
of a date within the end of the month preceding the Adjustment Date.  Mercantile
shall  promptly  provide a copy of such  reports to Sierra.  Between the date of
this  Agreement and the end of the month  preceding  the  Adjustment  Date,  all
assets of  Mercantile,  including  classified  or  criticized  and NPAs,  may be
reviewed by Sierra and Sierra provide,  not later than the last day of the month
preceding the  Adjustment  Date, a report  thereon to  Mercantile  setting forth
Sierra's grading or other assessment thereof (including accounting treatment and
loss  recognition)  utilizing  Mercantile's  regular  loan/OREO  review criteria
consistent  with  GAAP and RAP.  Mercantile  may  either  accept  and  implement
Sierra's grading or other assessments  (including  accounting treatment and loss
recognition)  concerning  loans or OREO,  or, if it does not agree with Sierra's
conclusions  as set forth in the report,  refer the matter for resolution by the
independent loan and appraisal  experts agreed to in writing by the parties (the
"Independent  Loan Reviewer" or "Independent  Appraiser") who shall  immediately
review  and/or  appraise  said loan(s) or OREO  utilizing  Mercantile's  regular
loan/OREO  review criteria  consistent with GAAP and RAP. The parties agree that
if the Independent Loan Reviewer  believes it necessary to retain an Independent
Appraiser  (or if such an  Appraiser  is  required by the  penultimate  sentence
below), the selection and supervision  thereof of said Appraiser shall be at the
discretion and under the control of the  Independent  Loan Reviewer.  Mercantile
agrees to recognize on its books and records all loan losses and record all OREO
at their net realizable  value (and record  related OREO expenses)  based on the
review/appraisal  by the Independent  Loan Reviewer or Independent  Appraiser no
later  than the  Adjustment  Date.  Sierra  and  Mercantile  agree to accept the
determinations of the Independent Loan Reviewer and Independent Appraiser.  With
respect to any OREO, based on all known information available from time to time,
if it appears that the then current  independent  appraisals may not be accurate
or upon request of and at the expense of Sierra,  Mercantile  shall  immediately
obtain updated  independent  appraisals by an Independent  Appraiser  (utilizing
Mercantile's  regular criteria  consistent with GAAP and RAP) and provide copies
of all such  appraisals  to Sierra.  Any new or  additional  writedowns  or OREO
expenses shall be recorded  immediately  upon receiving any updated  independent
appraisal. The costs of the neutral loan reviewer shall be shared equally by the
parties. Notwithstanding the foregoing, nothing herein shall require a reduction
of the  reserves as set forth on Schedule  2.1(c)  except as provided in Section
2.1(c)(ii)(A).


                  3.3 Covenants of Sierra.


                  (a) Conduct of Business in the Ordinary Course.  Prior to the
                     Effective Date

                  (i) In the event that Sierra  undertakes  any  transaction  or
series of  transactions  outside the  ordinary  course of business  prior to the
Effective Date, as soon as is practicable following the determination to proceed
with such a  transaction  or  transactions,  Sierra  shall  advise  the board of
directors of Mercantile of such  determination.  For purposes of this Agreement,
the "Ordinary Course" of Sierra shall consist of banking and related  businesses
as permitted  under  applicable  banking laws.  Unless  Mercantile has given its
previous  written consent to any act or omission to the contrary,  Sierra shall,
until the  Effective  Date,  cause its  officers  to use their  reasonable  best
efforts to:

                           (A)  preserve its business and business organizations
intact;



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                           (B) preserve  the good will of customers  and others
having  business  relations with it and take no action that would materially
impair the benefit to the other party of the goodwill of it or the other
benefits of the Merger;

                           (C) maintain its  properties  in customary  repair,
working  order and condition (reasonable wear and tear excepted);

                           (D) comply with all laws,  regulations  and decrees
applicable to the conduct of its business;

                           (E) use its  reasonable  best  efforts  to keep in
force  at not  less  than its present  limits all policies of insurance,
including  deposit  insurance of the FDIC, to the extent  reasonably  practic-
able in light of the  prevailing  market conditions in the insurance industry;

                           (F) comply  with all orders,  agreements  and  
memoranda  of  understanding  withrespect to it made by or with any regulatory
authority of competent jurisdiction;

                           (G) file in a timely manner  (taking into account any
extensions  duly obtained) all reports,  tax returns and other  documents  
required to be filed with  federal,  state,  local and other authorities;

                           (H) not sell,  lease,  pledge,  assign,  encumber or
otherwise  dispose of any of its assets except for adequate value, without 
recourse and consistent with its customary practice; and

                           (I) not make,  renegotiate,  renew,  increase,
extend  or  purchase  any  loans, advances or loan commitments, in each case to 
any of its officers,  directors or any affiliated or related  persons of such  
directors or officers  except in the Ordinary  Course   consistent  with  its  
established  loan  procedures  and  in compliance with FRB Regulation O.

                  (ii) It is  understood  and agreed by the parties  hereto that
any consent  sought of  Mercantile  or  required  by Sierra  pursuant to Section
2.4(c)  or any other  provision  of this  Agreement  shall be deemed to be given
following five (5) business days advanced notice by Sierra to Mercantile,  which
notice shall include such information as Mercantile shall reasonably  request or
unless the comments of Mercantile have been addressed by Sierra.




                  (b) Dividends.  At or after the date hereof and at or prior to
the Effective  Date,  except with the prior written  consent of Mercantile or as
otherwise provided in this Agreement, Sierra shall not declare, set aside or pay
any cash  dividend or other  distribution  in respect of its common  stock other
than,  in the  discretion  of the board of  directors  of Sierra,  regular  cash
dividends not to exceed $0.50 per share on an annual basis.


         (c) Indemnification; Insurancee.

                  (i) In the event of any  threatened or actual  claim,  action,
suit,  proceeding or investigation,  whether civil,  criminal or administrative,
including,  without  limitation,  any such claim,  action,  suit,  proceeding or
investigation  in which any person who is now,  or has been at any time prior to
the date of this  Agreement,  or who  becomes  prior to the  Effective  Time,  a
director or officer of Mercantile  ("Indemnified  Parties") is, or is threatened
to be, made a party based in whole or in part on, or arising in whole or in part
out of, or pertaining to (i) the fact that he is or was a director or officer of
Mercantile or any predecessor or (ii) this Agreement or any of the  transactions
contemplated hereby, whether in any case asserted or arising before or after the
Effective Date, the parties hereto agree to cooperate and use their best efforts
to defend  against and respond  thereto.  It is understood and agreed that after
the Effective  Date,  Sierra shall  indemnify and hold  harmless,  as and to the
fullest extent permitted by law, each such Indemnified Party against any losses,
claims, damages,  liabilities,  costs, expenses (including reasonable attorney's



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fees and  expenses  in advance  of the final  disposition  of any  claim,  suit,
proceeding or  investigation  to each  Indemnified  Party to the fullest  extent
permitted by law upon receipt of any  undertaking  required by applicable  law),
judgments,  fines and amounts paid in  settlement  in  connection  with any such
threatened or actual claim, action, suit, proceeding or investigation and in the
event of any such  threatened  or actual claim,  action,  suit,  proceeding,  or
investigation  (whether asserted or arising before or after the Effective Date),
the Indemnified Parties may retain counsel reasonably satisfactory to then after
consultation  with  Sierra;  provided,  however,  that (1) Sierra shall have the
right to assume the defense thereof and upon such assumption Sierra shall not be
liable to any  Indemnified  Party for any legal expenses of other counsel or any
other expenses subsequently incurred by any Indemnified Party in connection with
the defense thereof,  except that if Sierra elects not to assume such defense or
counsel for the Indemnified  Parties reasonably advises the Indemnified  Parties
that there are issues which raise  conflicts of interest  between Sierra and the
Indemnified  Parties,  the  Indemnified  Parties may retain  counsel  reasonably
satisfactory to them after  consultation  with Sierra,  and Sierra shall pay the
reasonable  fees and expenses of such counsel for the Indemnified  Parties,  (2)
Sierra shall be obligated pursuant to this paragraph to pay for only one firm of
counsel for all  Indemnified  Parties,  unless an  Indemnified  Party shall have
reasonably  concluded;  based  on the  advice  of  counsel,  that in order to be
adequately  represented,  separate  counsel is  necessary  for such  Indemnified
Party,  in which  case,  Sierra  shall  be  obligated  to pay for such  separate
counsel,  (3) Sierra shall not be liable for any settlement effected without its
prior written  consent (which consent shall not be unreasonably  withheld),  and
(4) Sierra shall have no obligation  hereunder to any Indemnified Party when and
if a court  of  competent  jurisdiction  shall  ultimately  determine,  and such
determination shall have become final and nonappealable, that indemnification of
such  Indemnified  Party in the  manner  contemplated  hereby is  prohibited  by
applicable law. Any  Indemnified  Party wishing to claim  Indemnification  under
this Section 3.3(c), upon learning of any such claim, action,  suit,  proceeding
or investigation,  shall notify Sierra thereof,  provided that the failure to so
notify shall not affect the  obligations  of Sierra  under this  Section  3.3(c)
except to the  extent  such  failure  to notify  materially  prejudices  Sierra.
Sierra's obligations under this Section 3.3(c) continue in full force and effect
for a period of four (4) years from the Effective Date; provided,  however, that
all rights to indemnification in respect of any claim ("Claim") asserted or made
within such period shall continue until the final  disposition of such Claim and
provided further that Sierra shall have the right of setoff against any payments
required to be made by Sierra to an  Indemnified  Party pursuant to this Section
3.3(c) to the  extent  that such  Indemnified  Party  shall  have  received  the
indemnification  to which such  Indemnified  Party is  entitled  from an insurer
under a directors'  and  officers'  liability  insurance  policy  maintained  by
Mercantile or Sierra.  As of the Effective  Date,  Sierra may in its  discretion
request that its insurance  carrier,  or  Mercantile's  insurance  carrier,  for
directors' and officers'  liability  insurance provide extended coverage for the
liability to the directors and officers of Mercantile  for such period as Sierra
deems appropriate.

                  (ii) In the event Sierra or any of its  successors  or assigns
(A)  consolidates  with or  merges  into any other  person  and shall not be the
continuing or surviving  corporation or entity of such  consolidation or merger,
or (B)  transfers  or conveys all or  substantially  all of its  properties  and
assets to any  person,  then,  and in each such case,  to the extent  necessary,
proper  provision  shall be made so that the  successors  and  assigns of Sierra
assume the obligations set forth in this section. The provisions of this Section
3.3(c) are intended to be for the benefit of, and shall be enforceable  by, each
Indemnified Party and his or her heirs and representatives.


Section 4. REPRESENTATIONS AND WARRANTIES OF MERCANTILE..

                  Mercantile  represents and warrants to Sierra that,  except as
set forth on a Schedule  attached to this Agreement and  corresponding in number
with the applicable section:


                  4.1 Corporate  Status and Power to Enter Into Agreements.  (i)
Mercantile is a banking  corporation duly incorporated,  validly existing and in
good standing under California law, (ii) subject to the Government Approvals and
to the approval of this Agreement and the  transactions  contemplated  hereby by
the shareholders of Mercantile,  Mercantile has all necessary corporate power to
enter into this  Agreement and the Merger  Agreement and to carry out all of the
terms  and  provisions  hereof  and  thereof  to be  carried  out by  it,  (iii)
Mercantile  holds a currently  valid  license  issued by the  Superintendent  to
engage in the business of  commercial  banking in  California  at its  principal
office in Sacramento, California and (iv) Mercantile is not subject to any order
of the  FDIC,  the  Superintendent  or any  other  regulatory  authority  having
jurisdiction  over its business or any of its assets or properties.  Neither the
scope of the business of Mercantile nor the location of its properties  requires



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it to be licensed to do  business  in any  jurisdiction  other than the State of
California.  Mercantile's deposits are insured by the FDIC to the maximum extent
permitted by applicable law and regulation.


                  4.2 Articles,  Bylaws,  Books and  Records.  The copies of the
Articles of  Incorporation  and Bylaws of  Mercantile  heretofore  delivered  to
Sierra are complete and accurate copies thereof as in effect on the date hereof.
The minute books of Mercantile  made  available to Sierra contain a complete and
accurate  record  of all  meetings  of  Mercantile's  Board  of  Directors  (and
committees thereof) and shareholders. The corporate books and records (including
financial  statements) of Mercantile fairly reflect the material transactions to
which Mercantile is a party or by which its properties are subject or bound, and
such books and records have been properly kept and maintained.


                  4.3 Compliance With Laws, Regulations and Decrees.  Mercantile
(i) has the corporate  power to own or lease its  properties  and to conduct its
business as currently  conducted,  (ii) has complied with, and is not in default
of any laws,  regulations,  ordinances,  orders  or  decrees  applicable  to the
conduct of its business and the ownership of its  properties,  including but not
limited to all  federal  and state laws  (including  but not limited to the Bank
Secrecy Act), rules and regulations  relating to the offer,  sale or issuance of
securities,  and the  operation  of a  commercial  bank  other  than  where such
noncompliance or default is not likely to result in a material limitation on the
conduct of its  business or is not likely to otherwise  have a material  adverse
effect on  Mercantile  taken as a whole,  (iii) has not  failed to file with the
proper federal,  state,  local or other authorities any material report or other
document  required  to be  filed,  and (iv) has all  approvals,  authorizations,
consents,  licenses,  clearances and orders of, and has currently  effective all
registrations  with,  all  governmental  and  regulatory  authorities  which are
necessary to the business and operations of Mercantile as now being conducted.


                  4.4 Capitalization. The authorized capital stock of Mercantile
consists of 1,000,000 shares of Mercantile  common stock, no par value, of which
336,980 are duly authorized, validly issued, fully paid and nonassessable except
as provided in Section  662 of the  California  Financial  Code,  and  currently
outstanding.  Said  stock has been  issued  in  compliance  with all  applicable
securities  laws.  There are no outstanding  (A) options,  agreements,  calls or
commitments  of any character  which would obligate  Mercantile to issue,  sell,
pledge,  assign or otherwise  encumber or dispose of, or to purchase,  redeem or
otherwise  acquire,  any Mercantile common stock or any other equity security of
Mercantile,  or (B) warrants or options relating to, rights to acquire,  or debt
or equity securities  convertible into, shares of Mercantile common stock or any
other equity security of Mercantile.


                  4.5 Equity  Interest in Any Entity.  Except as collateral  for
outstanding loans held in its loan portfolio,  Mercantile does not own, directly
or indirectly, any equity interest in any bank, corporation or other entity.


                  4.6 Financial  Statements,  Regulatory  Reports.  No financial
statement or other  document to be provided to Sierra by  Mercantile  under this
Agreement, as of the date of such document,  contained, or as to documents to be
delivered  after the date  hereof,  will  contain,  any  untrue  statement  of a
material fact, or, at the date thereof, omitted or will omit to state a material
fact necessary in order to make the statements  contained  therein,  in light of
the  circumstances  under  which  such  statements  were or will  be  made,  not
misleading;  provided,  however,  that  information  as of a later date shall be
deemed to modify  information  as of any earlier date.  Mercantile has filed all
material  documents  and reports  required to be filed by it with the FDIC,  the
Superintendent and any other governmental authority having jurisdiction over its
business or any of its assets or  properties.  All such  reports  conform in all
material respects with the requirements promulgated by such regulatory agencies.
All  compliance  or  corrective  action  relating  to  Mercantile   required  by
governmental  authorities  and  regulatory  agencies  having  jurisdiction  over
Mercantile  have been taken,  including  compliance  with any of the FDIC or the
Superintendent  in their most recent Reports of Examination.  Mercantile has not
received any notification, formally or informally, from any agency or department
of any federal,  state or local government or any regulatory agency or the staff
thereof (i)  asserting  that it is not in  compliance  with any of the statutes,
regulations  or  ordinances  which  such  government  or  regulatory   authority
enforces, where such non-compliance or default is likely to result in a material
limitation  on the conduct of its business or is not likely to otherwise  have a
material  adverse effect on Mercantile  taken as a whole, or (ii) threatening to
revoke any license, franchise, permit or governmental authorization.  Mercantile
has paid all assessments made or imposed by any governmental agency.  Mercantile



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has  delivered to Sierra copies of all annual  management  letters and opinions,
and has made available to Sierra for inspection all reviews,  correspondence and
other  documents  in  the  files  of  Mercantile  prepared  by  its  independent
accounting  firm delivered to Mercantile  since December 31, 1995. The financial
records of Mercantile  have been, and are being and shall be,  maintained in all
material  respects  in  accordance  with all  applicable  legal  and  accounting
requirements  sufficient to insure that all transactions  reflected therein are,
in all material  respects,  executed in accordance with management's  general or
specific  authorization  and  recorded in  conformity  with  generally  accepted
accounting principles at the time in effect. The data processing equipment, data
transmission  equipment,  related  peripheral  equipment  and  software  used by
Mercantile  in the  operation  of its  business to  generate  and  retrieve  its
financial records are adequate for the current needs of Mercantile.


                  4.7 Tax Returns.

                  (i)  Mercantile has timely filed all federal,  state,  county,
local and  foreign tax returns  required to be filed by it,  including,  without
limitation,  estimated  tax,  use tax,  excise tax,  real  property and personal
property  tax reports and returns,  employer's  withholding  tax returns,  other
withholding  tax returns and Federal  Unemployment  Tax  Returns,  and all other
reports or other  information  required or requested to be filed by it, and each
such return,  report or other information was, when filed, complete and accurate
in all  material  respects.  Mercantile  has paid  all  taxes,  fees  and  other
governmental  charges,  including any interest and penalties thereon,  when they
have become due,  except  those that are being  contested  in good faith,  which
contested  matters have been  disclosed to Sierra and are  disclosed on Schedule
4.7 hereto. Mercantile has not been requested to give or has given any currently
effective waivers extending the statutory period of limitation applicable to any
tax return required to be filed by it for any period. Other than as disclosed in
writing  to  Sierra,  there are no claims  pending  against  Mercantile  for any
alleged  deficiency in the payment of any taxes, and Mercantile does not know of
any pending or threatened  audits,  investigations or claims for unpaid taxes or
relating  to any  liability  in  respect of any  taxes.  As to such tax  claims,
Mercantile  has accrued on its books an amount that is believed to be sufficient
to pay all such taxes, including interest and penalties that may be due, and has
reduced tangible  shareholders'  equity by such amount. There has been no event,
including  a change  in  ownership,  that  would  result  in a  reappraisal  and
establishment  of a new base-year  full value for purposes of Article  XIII.A of
the California  Constitution,  of any real property owned in whole or in part by
Mercantile  or to  Mercantile's  knowledge,  of  any  real  property  leased  by
Mercantile.

                  (ii)  Mercantile has delivered to Sierra copies of all its tax
returns  with respect to taxes  payable to the United  States of America and the
State of California for the fiscal years ended December 31, 1994 and 1995.

                  (iii)    No consent has been filed relating to Mercantile
pursuant to  Section 341(f) of the IRC.


                  4.8 Material Adverse Change. Except as heretofore disclosed in
writing by Mercantile to Sierra, since September 30, 1996, there has been (i) no
material adverse change in the business, assets, licenses, permits,  franchises,
results of  operations or financial  condition of Mercantile  (whether or not in
the Ordinary Course), (ii) no change in any of the assets, licenses,  permits or
franchises  of Mercantile  that has had or can  reasonably be expected to have a
material adverse effect on any of the items listed in clause (i) above, (iii) no
damage,  destruction,  or  other  casualty  loss  (whether  or  not  covered  by
insurance) that has had or can reasonably be expected to have a material adverse
effect  on any of the  items  listed in clause  (i)  above,  (iv) no  amendment,
modification,  or  termination  of any  existing,  or entering  into of any new,
contract,  agreement, plan, lease, license, permit or franchise that is material
to the  business,  financial  condition,  assets,  liabilities  or operations of
Mercantile,  except in the Ordinary Course; and (v) no disposition by Mercantile
of one or more assets that,  individually  or in the aggregate,  are material to
Mercantile, except sales of assets in the Ordinary Course.


                  4.9 No  Undisclosed  Liabilities.  Except  for items for which
reserves have been  established  or accrued and recorded in the audited  balance
sheets of  Mercantile  as of December 31, 1995,  Mercantile  has not incurred or
discharged,  and is not  legally  obligated  with  respect to any  indebtedness,
liability  (including,  without  limitation,  a  liability  arising  out  of  an
indemnification,  guarantee, hold harmless or similar arrangement) or obligation
(accrued  or  contingent,  whether  due or to become  due,  and  whether  or not
subordinated to the claims of its general creditors),  other than as a result of
operations  in the  Ordinary  Course after such date.  No agreement  pursuant to



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which any loans or other assets have been or will be sold by Mercantile entitled
the buyer of such loans or other  assets,  unless there is material  breach of a
representation or covenant by the seller, to cause Mercantile to repurchase such
loan or other  asset or the buyer to pursue any other form of  recourse  against
Mercantile.   Mercantile   has  not  knowingly  made  and  shall  not  make  any
representation or covenant in any such agreement that contained or shall contain
any  untrue  statement  of a  material  fact or omitted or shall omit to state a
material fact necessary in order to make the statements  contained  therein,  in
light of the  circumstances  under which such  representations  and/or covenants
were made or shall be made, not misleading.  No cash, stock or other dividend or
any  other  distribution  with  respect  to the  stock  of  Mercantile  has been
declared, set aside or paid, nor have any shares of the stock of Mercantile been
purchased, redeemed or otherwise acquired, directly or indirectly, by Mercantile
since December 31, 1995.


                  4.10 Properties and Leases.

                  (a) Mercantile has good and marketable  title,  free and clear
of all liens and encumbrances  and the right of possession,  subject to existing
leaseholds,  to all real properties and good title,  free and clear of all liens
and  encumbrances,  to all other property and assets,  tangible and  intangible,
reflected  in the  Mercantile  balance  sheet as of December  31,  1995  (except
property  held as lessee  under leases  disclosed  in writing  prior to the date
hereof and except personal property sold or otherwise disposed of since December
31, 1995, in the Ordinary Course), except (i) liens for taxes or assessments not
delinquent, (ii) such other liens and encumbrances and imperfections of title as
do not  materially  affect  the  value  of such  property  as  reflected  in the
Mercantile  balance sheet as of December 31, 1995, or as currently  shown on the
books and records of Mercantile  and which do not  interfere  with or impair its
present and  continued  use,  (iii)  exceptions  disclosed in title  reports and
preliminary  title  reports,  copies of which have been provided to Sierra.  All
tangible  properties  of  Mercantile  conform in all material  respects with all
applicable  ordinances,  regulations and zoning laws. All tangible properties of
Mercantile  are in a good state of  maintenance  and repair and are adequate for
the  current  business of  Mercantile.  No  properties  of  Mercantile,  and, to
Mercantile's  knowledge,  no  properties  in  which  it  holds a  collateral  or
contingent  interest  or  purchase  option,  are the  subject of any  pending or
threatened  investigation,  claim or proceeding  relating to the use, storage or
disposal on such property of or  contamination  of such property by any toxic or
hazardous  waste material or substance.  To Mercantile's  knowledge,  Mercantile
does not own,  possess or have a collateral or  contingent  interest or purchase
option in any properties or other assets which contain or have located within or
thereon any hazardous or toxic waste  material or substance  unless the location
of such hazardous or toxic waste material or other  substance or its use thereon
conforms in all material respect with all federal,  state and local laws, rules,
regulations or other  provisions  regulating the discharge of materials into the
environment.  As to any asset not owned or leased by Mercantile,  Mercantile has
not  controlled,  directed or participated in the operation or management of any
such asset or any facilities or enterprise  conducted thereon,  such that it has
become an owner or operator of such asset under applicable environmental laws.

                  (b) All properties held by Mercantile under leases are held by
it under valid,  binding and enforceable leases, with such exceptions as are not
material and do not  interfere  with the conduct of the business of  Mercantile,
and  Mercantile  enjoys quiet and peaceful  possession of such leased  property.
Mercantile is not in default in any respect under any material lease,  agreement
or obligation  regarding its properties to which it is a party or by which it is
bound.

                  (c)  Except  as  disclosed  to  Sierra  in  writing,   all  of
Mercantile's  rights and obligations under the leases referred to in Section (b)
above  do not  require  the  consent  of any  other  party  to the  transactions
contemplated  by  this  Agreement  and the  Merger  Agreement.  Where  required,
Mercantile shall obtain, prior to the Effective Date, the consent of all parties
to any such transaction.


                  4.11 Material  Contracts.  Except as  previously  disclosed to
Sierra in writing and excluding  loans,  lines of credit,  loan  commitments  or
letters of credit to which  Mercantile is a party,  Mercantile is not a party to
or bound by any contract or other  agreement  made in the Ordinary  Course which
involves  aggregate future payments by or to Mercantile of more than $20,000 and
which is made  for a fixed  period  expiring  more  than one year  from the date
hereof,  and  Mercantile is not a party to or bound by any agreement not made in
the Ordinary  Course which is to be performed at or after the date hereof.  Each
of the contracts and agreements  disclosed to Sierra pursuant to this Section is



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a legal and binding obligation (subject to applicable bankruptcy, insolvency and
similar  laws  affecting   creditors'  rights  generally  and  subject,   as  to
enforceability,  to  equitable  principles  of  general  applicability),  and no
material  breach or default (and no condition  which,  with notice or passage of
time, or both,  could become a material  breach or default)  exists with respect
thereto.


                  4.12 Loans.  Mercantile  has  disclosed  to Sierra in  writing
prior to the date hereof,  and will promptly inform Sierra of the amounts of all
loans,   leases,   other   extensions  of  credit  or   commitments,   or  other
interest-bearing assets of Mercantile,  that have been classified as of the date
hereof or hereafter by any internal bank examiner or any bank regulatory  agency
or the Superintendent as "Other Loans Specially  Mentioned,"  "Special Mention,"
"Substandard,"  "Doubtful,"  "Loss," or words of  similar  import in the case of
loans  (or  that  would  have  been  so   classified,   in  the  case  of  other
interest-bearing assets, had they been loans). Mercantile has furnished and will
continue to furnish to Sierra true and accurate information  concerning the loan
portfolio of Mercantile,  and no material  information  with respect to the loan
portfolio has been or will be withheld from Sierra. All loans and investments of
Mercantile are legal,  valid and binding  obligations  enforceable in accordance
with its terms and are not  subject to any  setoffs,  counterclaims  or disputes
(subject  to  applicable  bankruptcy,  insolvency  and  similar  laws  affecting
creditors'  rights  generally and subject,  as to  enforceability,  to equitable
principles of general  applicability),  except as disclosed to Sierra in writing
or reserved for in the balance sheet of Mercantile as of September 30, 1996, and
were duly authorized  under and made in compliance  with applicable  federal and
state laws and  regulations.  Mercantile does not have any extensions of credit,
investments, guarantees,  indemnification agreements or commitments for the same
(including without limitation  commitments to issue letters of credit, to create
acceptances,  or to repurchase securities,  federal funds or other assets) other
than those documented on the books and records of Mercantile.


                  4.13 Restrictions on Investments. Except for pledges to secure
public and trust deposits and repurchase agreements in the Ordinary Course, none
of the  investments  reflected in the Mercantile  unaudited  balance sheet as of
September  30,  1996,  and  none of the  investments  made by  Mercantile  since
September  30,  1996,  is subject to any  restriction,  whether  contractual  or
statutory,  which materially impairs the ability of Mercantile to freely dispose
of such  investment at any time except as restricted by any applicable  banking,
securities or government regulations.


                  4.14 Employment Contracts and Benefits.

                  (a)  Mercantile  shall  deliver  to  Sierra an  accurate  list
setting  forth  all  bonus,  incentive  compensation,  profit-sharing,  pension,
retirement,  stock purchase,  stock option,  deferred  compensation,  severance,
hospitalization,  medical,  dental,  vision,  group  insurance,  death benefits,
disability and other fringe benefit plans,  trust  agreements,  arrangements and
commitments of Mercantile (including but not limited to such plans,  agreements,
arrangements   and  commitments   applicable  to  former  employees  or  retired
employees, or for which such persons are eligible), if any, together with copies
of all such plans, agreements, arrangements and commitments that are documented,
any and all contracts of employment  and has made  available to Sierra any Board
of  Directors'  minutes  (or  committee  minutes)   authorizing,   approving  or
guaranteeing such plans and contracts.

                  (b) All  contributions,  premiums or other  payments  due from
Mercantile to (or under) any plan listed in subsection  (a) have been fully paid
or  adequately  provided  for  through  periodic  accruals or  otherwise  on its
unaudited  financial  statements  for the period ended  September 30, 1996.  All
accruals  thereon  (including,  where  appropriate,  proportional  accruals  for
partial periods) have been made in accordance with generally accepted accounting
principles consistently applied on a reasonable basis.

                  (c) To Mercantile's knowledge,  each plan listed in subsection
(a) complies with all material  requirements  of (i) the Age  Discrimination  in
Employment  Act of 1967, as amended,  and the  regulations  thereunder  and (ii)
Title VII of the Civil  Rights  Act of 1964,  as  amended,  and the  regulations
thereunder.

                  (d) To Mercantile's knowledge,  each plan listed in subsection
(a) complied  with all  material  requirements  of the health care  continuation
coverage  provisions of the Consolidated  Omnibus Budget  Reconciliation  Act of
1985 and the regulations thereunder.



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                  (f)      Mercantile has heretofore disclosed in writing to
Sierra the names of each director, officer and employee of Mercantile.


                  4.15 Collective  Bargaining and Employment Agreements.  Except
as provided in this  Agreement or as previously  disclosed to Sierra in writing,
Mercantile  does  not  have  any  union  or  collective  bargaining  or  written
employment agreements, contracts or other agreements with any labor organization
or with any member of management,  or any management or  consultation  agreement
not terminable at will by Mercantile  without  liability and no such contract or
agreement has been requested by, or is under  discussion by management with, any
group of employees,  any member of management or any other person.  There are no
material  controversies  pending  between  Mercantile  and any current or former
employees,  and to Mercantile's knowledge,  there are no efforts presently being
made by any labor union seeking to organize any of such employees.


                  4.16 Compensation   of  Officers  and  Employees.   Except  as
previously  disclosed  to Sierra in  writing,  (i) no  officer  or  employee  of
Mercantile  is  receiving  aggregate  direct  remuneration  at a rate  exceeding
$60,000 per annum, and (ii) the consummation of the transactions contemplated by
this  Agreement  and the Merger  Agreement  will not  (either  alone or upon the
occurrence of any  additional  or further acts or events)  result in any payment
(whether of severance pay or otherwise)  becoming due from  Mercantile or Sierra
to any employee of Mercantile.


                  4.17 Legal  Actions  and  Proceedings.  Except  as  previously
disclosed  to  Sierra  in  writing,  Mercantile  is not a party to, or so far as
either of them is aware, threatened with, and to Mercantile's  knowledge,  there
is  no  reasonable   basis  for,  any  legal  action  or  other   proceeding  or
investigation  before any court,  any  arbitrator of any kind or any  government
agency,  and  Mercantile  is not subject to any  potential  adverse  claim,  the
outcome of which  could  involve  the  payment or receipt by  Mercantile  of any
amount in excess of  $50,000,  unless an  insurer  of  Mercantile  has agreed to
defend  against  and  pay  the  amount  of  any  resulting   liability   without
reservation,  or, if any such legal action,  proceeding,  investigation or claim
will not involve the payment by  Mercantile  of a monetary  amount,  which could
materially  adversely  affect  Mercantile  or its  business  or  property or the
transactions  contemplated hereby. Mercantile has no knowledge of any pending or
threatened  claims or charges under the Community  Reinvestment  Act, before the
Equal  Employment  Opportunity  Commission,  the  California  Department of Fair
Housing & Economic  Development,  the California  Unemployment Appeals Board, or
any human relations commission.  There is no labor dispute, strike, slow-down or
stoppage pending or, to Mercantile's knowledge, threatened against Mercantile.


                  4.18 Execution and Delivery of the Agreement.

                  (a) The  execution  and delivery of this  Agreement  have been
duly  authorized by the Board of Directors of  Mercantile  and, when the Merger,
this  Agreement  and  the  Merger  Agreement  have  been  duly  approved  by the
affirmative  vote of the  holders of a  majority  of the  outstanding  shares of
Mercantile  common stock at a meeting of shareholders  duly called and held, the
Merger,  this  Agreement  and the  Merger  Agreement  will be duly  and  validly
authorized by all necessary corporate action on the part of Mercantile.

                  (b) This  Agreement  has been duly  executed and  delivered by
Mercantile and (assuming due execution and delivery by Sierra) constitutes,  and
the Merger Agreement upon its execution and delivery by Mercantile (and assuming
due  execution  and  delivery  by Sierra)  will  constitute,  legal and  binding
obligations of Mercantile in accordance with its terms except as enforcement may
be limited by general  principles of equity whether applied in a court of law or
a court of equity and by  bankruptcy,  insolvency  and  similar  laws  affecting
creditor's rights and remedies generally.

                  (c) The execution and delivery by Mercantile of this Agreement
and the Merger  Agreement and the  consummation of the  transactions  herein and
therein  contemplated  (i) do not  violate  any  provision  of the  Articles  of
Incorporation  or  Bylaws  of  Mercantile  or, to  Mercantile's  knowledge,  any
provision  of  federal  or  state  law or any  governmental  rule or  regulation
(assuming (A) receipt of the Government Approvals,  (B) receipt of the requisite
Mercantile shareholder approval, (C) due registration of the Sierra Shares under
the Securities Act of 1933, as amended ("1933 Act"),  (D) receipt of appropriate
permits or approvals under state securities or "blue sky" laws, and (E) accuracy



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of the  representations  of Sierra set forth herein),  and (ii) to  Mercantile's
knowledge,  do not  require  any  consent of any person  except as  contemplated
herein,  conflict with or result in a breach of, or accelerate  the  performance
required by any of the terms of, any material debt instrument,  lease,  license,
covenant,  agreement or understanding to which Mercantile is a party or by which
it is  bound  or any  order,  ruling,  decree,  judgment,  arbitration  award or
stipulation to which Mercantile is subject,  or constitute a default  thereunder
or result in the creation of any lien, claim,  security  interest,  encumbrance,
charge,  restriction or right of any third party of any kind whatsoever upon any
of the properties or assets of Mercantile.


                  4.19 Retention  of Broker or  Consultant.  No  broker,  agent,
finder,  consultant or other party (other than legal, compliance,  loan auditors
and  accounting  advisors)  has been retained by Mercantile or is entitled to be
paid  based  upon  any  agreements,   arrangements  or  understandings  made  by
Mercantile  in  connection  with any of the  transactions  contemplated  by this
Agreement or the Merger Agreement,  except that Mercantile has engaged Carpenter
and  Company  to  render  an  opinion  regarding  the  fairness  of the  Merger.
Mercantile   shall  provide  Sierra  with  a  true  and  accurate  copy  of  its
agreement(s)  with such firm. All costs related to such opinion shall be paid or
accrued prior to the Effective Date.


                  4.20 Insurance.  Mercantile  is  and  continuously  since  its
inception has been,  insured with reputable  insurers against all risks normally
insured  against  by  California  commercial  banks,  and  all of the  insurance
policies  and bonds  maintained  by  Mercantile  are in full  force and  effect,
Mercantile is not in default  thereunder and all material claims thereunder have
been filed in due and timely fashion.  In the best judgment of the management of
Mercantile,  such  insurance  coverage is  adequate  for  Mercantile.  Except as
disclosed  to Sierra in writing,  there has not been any damage to,  destruction
of, or loss of any assets of  Mercantile  not  covered by  insurance  that could
materially and adversely affect the business,  financial condition,  properties,
assets or results of operations of Mercantile.


                  4.21 Loan  Loss  Reserves.  To the  knowledge of  Mercantile's
management,  the  allowance  for loan  losses as of the  Effective  Date will be
adequate in all material respects under the requirements of all applicable state
and  federal  laws and  regulations  to  provide  for  possible  loan  losses on
outstanding loans, net of recoveries.


                  4.22 Transactions With Affiliates.  Except as may arise in the
Ordinary Course,  Mercantile has not extended credit, committed itself to extend
credit,  or  transferred  any asset to or assumed or guaranteed any liability of
the employees or directors of Mercantile, or any spouse or child of any of them,
or to any of their  "affiliates"  or  "associates"  as such terms are defined in
Rule  405  under  the 1933  Act.  Mercantile  has not  entered  into  any  other
transactions  with the  employees or directors  of  Mercantile  or any spouse or
child of any of them,  or any of  their  affiliates  or  associates,  except  as
disclosed in writing to Sierra. Any such transactions have been on terms no less
favorable  to  Mercantile  than those  which  would  prevail  in an  arms-length
transaction with an independent third party.


                  4.23 Information   in  Sierra  Registration   Statement.   The
information  pertaining  to  Mercantile  which has been or will be  furnished to
Sierra for or on behalf of Mercantile  for inclusion in the Sierra  Registration
Statement and the Proxy Materials,  or in the applications to be filed to obtain
the  Government  Approvals  ("Applications"),  does not and will not contain any
untrue  statement  of any  material  fact or  omits or will  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  are  made,  not
misleading;  provided, however, that information of a later date shall be deemed
to modify  information  as of an  earlier  date.  All  financial  statements  of
Mercantile  included in the Proxy  Materials  will present  fairly the financial
condition  and  results of  operations  of  Mercantile  at the dates and for the
periods  covered  by such  statements  in  accordance  with  generally  accepted
accounting  principles  consistently  applied  throughout the periods covered by
such statements.  Mercantile shall promptly advise Sierra in writing if prior to
the Effective  Date  Mercantile  shall obtain  knowledge of any facts that would
make it necessary to amend or supplement the Sierra Registration Statement,  the
Proxy Materials or the Applications, in order to make the statements therein not
misleading or to comply with applicable law.


                  4.24 Accuracy   of   Representations   and   Warranties.    No
representation or warranty by Mercantile,  and no statement by Mercantile in any
certificate,  agreement, schedule or other document furnished in connection with



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the  transactions  contemplated  by  this  Agreement  or the  Merger  Agreement,
contains or will  contain any untrue  statement  of a material  fact or omits or
will omit to state any  material  fact  necessary  to make such  representation,
warranty  or  statement  not  misleading  to  Sierra;  provided,  however,  that
information  as of a later date shall be deemed to modify  information  as of an
earlier date.


Section 5. REPRESENTATIONS AND WARRANTIES OF SIERRA..

                  Sierra  represents and warrants to Mercantile that,  except as
set forth on a Schedule  attached to this Agreement and  corresponding in number
to the appropriate section:


                  5.1 Corporate  Status and Power to Enter Into Agreements.  (i)
Sierra is a corporation duly incorporated, validly existing and in good standing
under  California  law, and is a registered  bank holding company under the Bank
holding  Company Act of 1956,  as amended,  (ii) subject to the approval of this
Agreement and the transactions  contemplated hereby by the  Superintendent,  the
FDIC and, unless waived,  the FRB,  Sierra has all necessary  corporate power to
enter into this  Agreement and the Merger  Agreement and to carry out all of the
terms and provisions  hereof and thereof to be carried out by it, (iii) Sierra's
bank subsidiary is duly licensed to engage in the commercial banking business as
now  conducted by it, and (iv)  neither  Sierra nor any of its  subsidiaries  is
subject  to any order of the FRB,  the  FDIC,  the  Superintendent  or any other
regulatory  authority having jurisdiction over its business or any of its assets
or  properties.  Neither the scope of the business of Sierra nor the location of
its  properties  requires it to be licensed to do business in any  jurisdictions
other than states of California and Nevada.


                  5.2 Articles,  Bylaws,  Books and  Records.  The copies of the
Articles of Incorporation  and Bylaws of Sierra made available to Mercantile are
complete and accurate copies thereof as in effect on the date hereof. The minute
books of Sierra  contain a complete  and  accurate  summary of all  meetings  of
Sierra's  Board of Directors  (and  committees  thereof) and  shareholders.  The
corporate books and records  (including  financial  statements) of Sierra fairly
reflect the  material  transactions  to which  Sierra is a party or by which its
properties  are subject or bound,  and such books and records have been properly
kept and maintained.


                  5.3 Compliance With Laws, Regulations and Decrees.  Sierra (i)
has the  corporate  power to own or lease  its  properties  and to  conduct  its
business as currently  conducted,  (ii) has complied with, and is not in default
of any laws,  regulations,  ordinances,  orders  or  decrees  applicable  to the
conduct of its business and the ownership of its  properties,  including but not
limited to all  federal  and state laws  (including  but not limited to the Bank
Secrecy Act), rules and regulations  relating to the offer,  sale or issuance of
securities,  and the  operation  of a  commercial  bank,  other  than where such
noncompliance or default is not likely to result in a material limitation on the
conduct of the business of Sierra or is not likely to otherwise  have a material
adverse effect on Sierra taken as a whole, (iii) has not failed to file with the
proper federal,  state,  local or other authorities any material report or other
document  required to be to filed,  and (iv) has all approvals,  authorizations,
consents,  licenses,  clearances and orders of, and has currently  effective all
registrations  with,  all  governmental  and  regulatory  authorities  which are
necessary to the business and operations of Sierra as now being conducted.


                  5.4 Capitalization.  As of November 30, 1996,  the  authorized
capital stock of Sierra consists of 10,000,000 shares of Sierra common stock, no
par value, of which 2,754,569 are duly  authorized,  validly issued,  fully paid
and nonassessable and currently outstanding, 9,800,000 shares of preferred stock
none of which is outstanding, 200,000 shares of series A preferred stock none of
which are issued or outstanding and $8,705,000 of Sierra debentures  convertible
into  870,500  shares of Sierra  common  stock.  Said  stock has been  issued in
compliance with all applicable  securities laws. There are currently outstanding
options to purchase 384,080 shares of Sierra common stock, at a weighted average
exercise  price of $9.47 per share,  issued  pursuant  to its 1996 Stock  Option
Plan.  Said options were issued and, upon issuance in accordance  with the terms
of the outstanding  options said shares shall be issued,  in compliance with all
applicable  securities  laws.  Sierra has adopted a Board of Directors  Deferred
Compensation  and Stock Award Plan under which the members of Sierra's  Board of
Directors  can  elect to  defer  earned  director  compensation  and  take  such
compensation  upon retirement from the Board either in the form of Sierra Shares
or in cash. Otherwise, there are no outstanding (i) options,  agreements,  calls
or commitments  of any character  which would  obligate  Sierra to issue,  sell,
pledge,  assign or otherwise  encumber or dispose of, or to purchase,  redeem or
otherwise  acquire,  any Sierra  common  stock or any other  equity  security of



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Sierra,  or (ii) warrants or options relating to, rights to acquire,  or debt or
equity  securities  convertible into, shares of Sierra common stock or any other
equity security of Sierra.  The outstanding common stock of Sierra has been duly
and  validly  registered  with the  Commission  pursuant to the 1934 Act, to the
extent required thereunder.


                  5.5 Financial  Statements,  Regulatory  Reports.  No financial
statement or other  document to be provided to  Mercantile  by Sierra under this
Agreement, as of the date of such document,  contained, or as to documents to be
delivered  after the date  hereof,  will  contain,  any  untrue  statement  of a
material fact, or, at the date thereof, omitted or will omit to state a material
fact necessary in order to make the statements  contained  therein,  in light of
the  circumstances  under  which  such  statements  were or will  be  made,  not
misleading;  provided,  however,  that  information  as of a later date shall be
deemed  to modify  information  as of any  earlier  date.  Sierra  has filed all
material  documents  and reports  required  to be filed by it with the FRB,  the
Commission and any other  governmental  authority having  jurisdiction  over its
business or any of its assets or  properties.  All such  reports  conform in all
material respects with the requirements promulgated by such regulatory agencies.
All compliance or corrective  action relating to Sierra required by governmental
authorities and regulatory  agencies having  jurisdiction  over Sierra or any of
its bank subsidiaries have been taken. Sierra has not received any notification,
formally or informally,  from any agency or department of any federal,  state or
local  government  or any  regulatory  agency or the staff thereof (i) asserting
that it is not in compliance with any of the statutes, regulations or ordinances
which such government or regulatory  authority enforces,  or (ii) threatening to
revoke any license,  franchise,  permit or governmental authorization of Sierra.
Sierra has paid all  assessments  made or imposed  by any  governmental  agency.
Sierra has delivered to Mercantile copies of all annual  management  letters and
opinions,  and has made  available to  Mercantile  for  inspection  all reviews,
correspondence and other documents in the files of Sierra prepared by Deloitte &
Touche or any other certified public accountant  engaged by Sierra and delivered
to Sierra since  December 31, 1995.  The financial  records of Sierra have been,
are being and shall be  maintained in all material  respects in accordance  with
all applicable legal and accounting  requirements  sufficient to insure that all
transactions  reflected  therein  are,  in all  material  respects,  executed in
accordance with management's  general or specific  authorization and recorded in
conformity with generally accepted accounting  principles at the time in effect.
The data processing equipment,  data transmission equipment,  related peripheral
equipment  and  software  used by Sierra in the  operation  of its  business  to
generate and retrieve its  financial  records are adequate for the current needs
of Sierra.


                  5.6 Tax Returns.

                  (a) Sierra has timely filed all federal,  state, county, local
and  foreign  tax  returns  required  to be  filed  by  it,  including,  without
limitation,  estimated  tax,  use tax,  excise tax,  real  property and personal
property  tax reports and returns,  employer's  withholding  tax returns,  other
withholding  tax returns and Federal  Unemployment  Tax  Returns,  and all other
reports or other information  required or requested to be filed by each of them,
and each such return,  report or other information was, when filed, complete and
accurate in all  material  respects.  Sierra has paid all taxes,  fees and other
governmental  charges,  including any interest and penalties thereon,  when they
have become due,  except  those that are being  contested  in good faith,  which
contested matters have been disclosed to Mercantile.  Except as set forth below,
neither  Sierra nor any of its  subsidiaries  has been  requested to give or has
given  any  currently  effective  waivers  extending  the  statutory  period  of
limitation  applicable to any tax return  required to be filed by either of them
for any period.  Except as set forth below,  there are no claims pending against
Sierra or any of its subsidiaries  for any alleged  deficiency in the payment of
any  taxes,  and  Sierra  does not know of any  pending  or  threatened  audits,
investigations  or claims for  unpaid  taxes or  relating  to any  liability  in
respect of any taxes.

                  (b)      No consent has been filed relating to Sierra pursuant
to Section 341(f) of the IRC.


                  5.7 Material Adverse Change. Except as heretofore disclosed in
writing by Sierra to  Mercantile,  since  September 30, 1996,  there has been no
material adverse change in the business, assets, licenses, permits,  franchises,
results of  operations or financial  condition of Sierra  (whether or not in the
Ordinary Course).


                  5.8 Legal  Actions  and  Proceedings.   Except  as  previously
disclosed  to  Mercantile  in  writing,  Sierra  is not a party to, or so far as
either of them is aware, threatened with, and to Sierra's knowledge, there is no



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reasonable  basis for, any legal  action or other  proceeding  or  investigation
before any court,  any  arbitrator  of any kind or any  government  agency,  and
Sierra is not subject to any potential adverse claim, the outcome of which could
involve  the  payment or receipt by Sierra of any amount in excess of  $200,000,
unless an insurer of Sierra has agreed to defend  against  and pay the amount of
any  resulting  liability  without  reservation,  or, if any such legal  action,
proceeding,  investigation  or claim will not involve the payment by Sierra of a
monetary amount,  which could materially adversely affect Sierra or its business
or property or the transactions  contemplated hereby. Sierra has no knowledge of
any pending or threatened  claims or charges  under the  Community  Reinvestment
Act,  before  the  Equal  Employment  Opportunity  Commission,   the  California
Department of Fair Housing & Economic Development,  the California  Unemployment
Appeals Board,  or any human  relations  commission.  There is no labor dispute,
strike, slow-down or stoppage pending or, to the knowledge of Sierra, threatened
against Sierra.


                  5.9 Execution and Delivery of the Agreement..

                  (a) The Merger,  this Agreement and the Merger  Agreement have
been duly and validly  authorized by all necessary  corporate action on the part
of Sierra.

                  (b) This  Agreement  has been duly  executed and  delivered by
Sierra and (assuming due execution and delivery by Mercantile) constitutes,  and
the Merger  Agreement,  upon its  execution and delivery by Sierra (and assuming
due execution and delivery by  Mercantile)  will  constitute,  legal and binding
obligations of Sierra in accordance with its terms.

                  (c) The execution and delivery by Sierra of this Agreement and
the Merger Agreement and the consummation of the transactions herein and therein
contemplated  (i) do not violate any provision of the Articles of  Incorporation
or Bylaws of Sierra or, to Sierra's knowledge, any provision of federal or state
law  or any  governmental  rule  or  regulation  (assuming  (A)  receipt  of the
Government  Approvals,  (B) due registration of the Sierra Shares under the 1933
Act, (C) receipt of appropriate  permits or approvals under state  securities or
"blue sky" laws, and (D) accuracy of the representations of Mercantile set forth
herein),  and (ii) to  Sierra's  knowledge,  do not  require  any consent of any
person  under,  conflict  with or  result  in a breach  of,  or  accelerate  the
performance  required  by any of the terms of,  any  material  debt  instrument,
lease, license, covenant,  agreement or understanding to which Sierra is a party
or by which it is bound or any  order,  ruling,  decree,  judgment,  arbitration
award or  stipulation  to which  Sierra  is  subject,  or  constitute  a default
thereunder  or result in the  creation of any lien,  claim,  security  interest,
encumbrance,  charge,  restriction  or  right  of any  third  party  of any kind
whatsoever upon any of the properties or assets of Sierra.


                  5.10 No  Undisclosed  Liabilities.  Except for items for which
reserves have been  established  in the audited  balance  sheets of Sierra as of
December 31, 1995,  Sierra has not  incurred or  discharged,  and is not legally
obligated  with  respect  to any  indebtedness,  liability  (including,  without
limitation,  a liability  arising  out of an  indemnification,  guarantee,  hold
harmless or similar  arrangement) or obligation (accrued or contingent,  whether
due or to become  due,  and  whether  or not  subordinated  to the claims of its
general  creditors),  which  would  have a  material  effect on the  capital  or
earnings of Sierra other than as a result of operations  in the Ordinary  Course
after  such  date.  Other than a possible  cash  dividend  by Sierra  payable to
shareholders  of record as of March,  1997, no cash,  stock or other dividend or
any other  distribution  with respect to the stock of Sierra has been  declared,
set aside or paid,  nor have any shares of the stock of Sierra  been  purchased,
redeemed or otherwise acquired, directly or indirectly, by Sierra since December
31, 1995.


                  5.11 No  Material  Environmental   Liabilities.   To  Sierra's
knowledge,  Sierra  does not own,  possess or have a  collateral  or  contingent
interest or purchase  option in any  properties or other assets which contain or
have  located  within or  thereon  any  hazardous  or toxic  waste  material  or
substance unless the location of such hazardous or toxic waste material or other
substance or its use thereon  conforms in all material respect with all federal,
state and local laws,  rules,  regulations  or other  provisions  regulating the
discharge of materials into the  environment  the liability of  remediation  for
which  would  cause a material  adverse  change in the  capital or  earnings  of
Sierra.



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                  5.12 No  Material  Liabilities  Under ERISA.  No  governmental
agency or claimant or  representative  of such  claimant have alleged a material
violation of ERISA by Sierra the liability for which,  if adversely  determined,
would result in a material adverse change in the capital or earnings of Sierra.


                  5.13 Retention  of Broker or  Consultant.  No  broker,  agent,
finder,  consultant or other party (other than legal, compliance,  loan auditors
and  accounting  advisors) has been retained by Sierra or is entitled to be paid
based upon any  agreements,  arrangements  or  understandings  made by Sierra in
connection  with any of the  transactions  contemplated by this Agreement or the
Merger Agreement.


                  5.14 Loan  Loss   Reserves.   To  the  knowledge  of  Sierra's
management,  the  allowance  for loan losses in the Sierra  balance  sheet dated
September 30, 1996, and as of the Effective Date are and will be adequate in all
material  respects under the  requirements  of all applicable  state and federal
laws and  regulations to provide for possible loan losses on outstanding  loans,
net of  recoveries,  including  compliance  with the comments of the FDIC in its
most recent Report of Examination.


                  5.15 Information   in  Sierra  Registration   Statement.   The
information  pertaining  to Sierra which has been or will be furnished for or on
behalf of Sierra for inclusion in the Sierra Registration Statement or the Proxy
Materials,  or in the  Applications,  does not and will not  contain  any untrue
statement of any material  fact or omits or will 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 are made, not misleading;  provided,
however,  that information of a later date shall be deemed to modify information
as of an earlier date. All financial  statements of Sierra included in the Proxy
Materials will present fairly the financial  condition and results of operations
of Sierra  at the  dates  and for the  periods  covered  by such  statements  in
accordance with generally accepted accounting  principles  consistently  applied
throughout the periods covered by such statements.  Sierra shall promptly advise
Mercantile  in  writing  if prior to the  Effective  Date  Sierra  shall  obtain
knowledge  of any  facts  that  would  make it  necessary  to amend  the  Sierra
Registration Statement, the Proxy Materials or any Application, or to supplement
the  prospectus,  in order to make the  statements  therein not misleading or to
comply with applicable law.


                  5.16 Accuracy   of   Representations   and   Warranties.    No
representation  or  warranty  by  Sierra,  and no  statement  by  Sierra  in any
certificate,  agreement, schedule or other document furnished in connection with
the  transactions  contemplated  by  this  Agreement  or the  Merger  Agreement,
contains or will  contain any untrue  statement  of a material  fact or omits or
will omit to state any  material  fact  necessary  to make such  representation,
warranty or statement not  misleading to  Mercantile;  provided,  however,  that
information  as of a later date shall be deemed to modify  information  as of an
earlier date.


Section 6. SECURITIES ACT OF 1933; SECURITIES EXCHANGE ACT OF 1934..


                  6.1 Preparation and Filing of Registration  Statement.  Unless
exempted from  registration  by Section  3(a)(10) of the 1933 Act,  Sierra shall
promptly  prepare and file with the Commission a  registration  statement on the
appropriate  form ("Sierra  Registration  Statement")  under and pursuant to the
provisions of the 1933 Act for the purpose of  registering  the Sierra Shares to
be issued in the Merger.  Sierra and  Mercantile  shall  promptly  prepare Proxy
Materials  for the purpose of  submitting  the Merger,  this  Agreement  and the
Merger  Agreement to the  shareholders  of Mercantile  for approval.  Sierra and
Mercantile  shall  cooperate  in all  reasonable  respects  with  regard  to the
preparation of the Sierra  Registration  Statement and the Proxy Materials.  The
Proxy Materials in definitive form are expected to serve as the prospectus to be
included in the Sierra Registration Statement.  Sierra and Mercantile shall each
provide  promptly to the other such  information  concerning  its  business  and
financial  condition and affairs as may be required or appropriate for inclusion
in the Sierra Registration Statement or the Proxy Materials, and shall cause its
counsel and auditors to cooperate  with the other's  counsel and auditors in the
preparation of the Sierra Registration Statement and the Proxy Materials.


                  6.2 Effectiveness  of  Registration  Statement  and Listing of
Shares. Sierra and Mercantile shall use their commercially reasonable efforts to
have the Sierra Registration Statement and any amendments or supplements thereto
declared  effective  under the 1933 Act as soon as  practicable,  and thereafter
Mercantile  shall  distribute the Proxy Materials to holders of its common stock
in accordance with applicable  laws.  Sierra shall use  commercially  reasonable



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efforts to cause the Sierra  Shares  issued to effect the Merger to be  approved
for listing on the Nasdaq  National  Market  System when such Sierra  Shares are
issued to Mercantile's shareholders.


                  6.3 Sales  and Resales of Common  Stock.  Sierra  shall not be
required to maintain the effectiveness of the Sierra Registration  Statement for
the purpose of sale or resale of the Sierra Shares by any person.


                  6.4   RuleRule 145 and Related  Matters.  At Sierra's  option,
securities  representing  Sierra Shares issued to "affiliates",  as that term is
defined in the 1933 Act, of Mercantile  (as  determined by counsel to Sierra and
Mercantile)  under  Rule 145 of the  Rules  and  Regulations  under the 1933 Act
pursuant to the Merger  Agreement  will be subject to stop  transfer  orders and
will bear a restrictive legend in substantially the following form:

                  "The  Securities  Represented  by this  Certificate  Have been
                  Issued in a Transaction  to Which Rule 145  Promulgated  under
                  the Securities  Act of 1933, as Amended,  Applies and May Only
                  Be  Sold or  Otherwise  Transferred  in  Compliance  with  the
                  Requirements   of  Rule  145  or  Pursuant  to  an   Effective
                  Registration  Statement  under  Said  Act or in a  Transaction
                  Which,  in the Opinion of Counsel  Satisfactory to the Issuer,
                  satisfies an Exemption from Such Registration."

Should any opinion of counsel  described in clause (ii) of the foregoing  legend
indicate that the legend and any stop transfer order then in effect with respect
to the shares may be removed,  Sierra will upon  request  substitute  unlegended
securities and remove any stop transfer orders.


Section 7. CONDITIONS TO THE OBLIGATIONS OF SIERRA..

                  The  obligations  of Sierra under this  Agreement  are, at its
option,  subject to fulfillment at or prior to the Effective Date of each of the
following conditions; provided, however, that any one or more of such conditions
may be waived by the Board of Directors of Sierra at any time at or prior to the
Effective Date:


                  7.1 Representations  and Warranties.  The  representations and
warranties  of  Mercantile  in Section 4 hereof shall be true and correct in all
material  respects  on and as of the  Effective  Date,  with the same  effect as
though such  representations and warranties had been made on and as of such date
except as to any  representation  or warranty which  specifically  relates to an
earlier date.


                  7.2 Compliance  and Performance  Under  Agreement.  Mercantile
shall have  performed  and complied in all material  respects  with all terms of
this  Agreement  and the Merger  Agreement  required to be performed or complied
with by it at or prior to the Effective Date.


                  7.3 Material  Adverse  Change.  No materially  adverse  change
shall have  occurred  since  September  30,  1996,  in the  business,  financial
condition or results of operations of Mercantile and  Mercantile  shall not be a
party to or, so far as Mercantile is aware, threatened with, and to Mercantile's
knowledge there is no reasonable basis for, any legal action or other proceeding
before any court, any arbitrator of any kind or any Government agency if, in the
reasonable  judgment of Sierra, such legal action or proceeding could materially
adversely affect Mercantile, or its business,  financial condition or results of
operations.


                  7.4 Approval of Agreement.  The Merger, this Agreement and the
Merger  Agreement shall have been duly approved by the  affirmative  vote of the
holders of a majority of the outstanding shares of Mercantile common stock.


                  7.5 Officer's  Certificate.   Sierra  shall  have  received  a
certificate,  dated the  Effective  Date,  signed on behalf of Mercantile by its
President  to the effect  that the  conditions  in  Sections  7.1-7.4  have been
satisfied.



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                  7.6 Opinion  of Counsel.  Mercantile  shall have  delivered to
Sierra such  documents  as may  reasonably  be  requested  by Sierra to evidence
compliance by Mercantile  with the  provisions of this  Agreement and the Merger
Agreement,  including an opinion of its counsel in a form  substantially  as set
forth on Exhibit 7.6.


                  7.7 Absence of Legal  Impediment.  On the Effective  Date, the
absence of: (a) any suit, action or proceeding,  or order against  Mercantile or
Sierra  with  respect  to  any  part  of  this  Agreement,  or  the  Merger,  or
challenging,  enjoining,  or otherwise  affecting the consummation of the Merger
which,  in the opinion of counsel for Sierra,  materially  affects the Merger or
the consummation of this Agreement;  or (b) any pending or threatened  action or
proceeding  by  the  United  States  Department  of  Justice  or  other  federal
governmental agency seeking to enjoin,  prohibit or otherwise impede the Merger;
or (c) a banking  moratorium  or other  suspension  of  payment  by banks in the
United States or any general  limitation on extension of credit by lending banks
in the United States.


                  7.8 Effectiveness of Registration Statement. The Sierra common
stock to be issued to Mercantile  shareholders  shall have been determined to be
exempt from registration or the Sierra Registration Statement and any amendments
or supplements  thereto shall have become  effective under the 1933 Act. No stop
order suspending the  effectiveness of such  Registration  Statement shall be in
effect  and no  proceedings  for such  purpose  shall  have  been  initiated  or
threatened  by or before the  Commission.  All state  securities  and "blue sky"
permits or approvals  required to consummate the  transactions  contemplated  by
this Agreement and the Merger Agreement shall have been received.


                  7.9 Government Approvals. All Government Approvals shall be in
effect,  and all  conditions  or  requirements  prescribed by law or by any such
Governmental  Approval shall have been  satisfied;  provided,  however,  that no
Government  Approval  shall be deemed to have been  received if it shall require
the  divestiture  or cessation of any of the present  businesses  or  operations
conducted by either of the parties hereto or shall impose any other condition or
requirement, which Sierra in its reasonable judgment shall deem to be materially
burdensome (in which case Sierra shall promptly notify Mercantile). For purposes
of this Agreement no condition shall be deemed to be "materially  burdensome" if
such condition does not materially  differ from conditions  regularly imposed by
the FRB, the  Superintendent,  or FDIC in orders  approving  transactions of the
type  contemplated  by this Agreement and compliance  with such condition  would
not:

                  (a)      require the taking of any action inconsistent with
the manner in which Sierra or Mercantile has conducted its business previously;

                  (b)      have a material adverse effect upon the business,
financial condition or results of operations of Sierra or Mercantile; or

                  (c)      preclude satisfaction of any of the conditions to 
consummation of the transactions contemplated by this Agreement.

                  7.10 Tax Opinion. Sierra and Mercantile shall have received an
opinion of counsel  or  accountants  satisfactory  to both  parties,  subject to
assumptions and exceptions normally included,  in form and substance  reasonably
satisfactory  to both  parties,  substantially  to the effect that under federal
income tax law and California income and franchise tax law:

                  (a)      The Merger will comply with the requirements of
Internal Revenue Code Section 368;

                  (b) Except for the Cash  Component of the Exchange  Amount and
any cash  received  in lieu of any  fractional  share,  no gain or loss  will be
recognized by holders of Mercantile Shares who receive Sierra Shares in exchange
for the Mercantile Shares which they hold;

                  (c)  The  holding  period  of  Sierra  Shares   exchanged  for
Mercantile  Shares will include the holding period of the Mercantile  Shares for
which they are exchanged,  assuming the shares of Mercantile  Shares are capital
assets in the hands of the holder thereof at the Effective Date; and



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<PAGE>



                  (d) The basis of the Sierra  Shares  received in the  exchange
will be the same as the  basis  of the  Mercantile  Shares  for  which  they are
exchanged,  less any basis  attributable  to the Cash Component or to fractional
shares for which cash is received.


                  7.11 Unaudited  Financials.  Not later than the  Determination
Date,  Mercantile  shall  have  furnished  Sierra  a copy of its  most  recently
prepared unaudited  consolidated  financial  statements for the period beginning
January 1, 1997 and ending the monthend immediately  preceding the Determination
Date,  including a balance sheet and statement of income of Mercantile  for that
period.


                  7.12 Rule 145 Undertaking.  Each director,  executive  officer
and other  person  who is an  "affiliate"  (for  purposes  of Rule 145 under the
Securities  Act) of such  party  shall  have  delivered  to  Sierra,  as soon as
practicable  after  the  date of this  Agreement,  and  prior to the date of the
shareholder  meeting called by Mercantile to approve this  Agreement,  a written
agreement,  in the form of Exhibit 7.12 hereto,  providing that such person will
not sell,  pledge,  transfer  or  otherwise  dispose of any Sierra  Shares to be
received  by such  "affiliate"  in the  Merger,  except in  compliance  with the
applicable  provisions  of the  Securities  Act and the  rules  and  regulations
thereunder.   Notwithstanding   any  other  provision  of  this  Agreement,   no
certificate  for Sierra  Shares shall be  delivered  in exchange for  Mercantile
Shares held by any such  "affiliate"  who shall not have  executed and delivered
such an agreement.


                  7.13 Closing  Documents.   Sierra  shall  have  received  such
certificates and other closing  documents as counsel for Sierra shall reasonably
request.


                  7.14 Consents. Mercantile shall have received, or Sierra shall
have  satisfied  itself that  Mercantile  will  receive,  all  consents of other
parties to and  required  by  material  mortgages,  notes,  leases,  franchises,
agreements,  licenses and permits applicable to Mercantile, in each case in form
and substance reasonably  satisfactory to Sierra, and no such consent or license
or permit shall have been withdrawn or suspended.


                  7.15 Shareholder  Agreements.  All directors of Mercantile and
the Brooks Trust shall have entered into a  shareholder's  agreement in the form
attached  hereto as Exhibit 7.15  contemporaneously  with the  execution of this
Agreement by which such  shareholders  agree to vote their shares and any shares
over which such  shareholders  have voting  authority in favor of the Merger and
further  agreeing,  to the extent permitted by law and the bylaws of Mercantile,
to vote in favor of the Merger by consent solicitation.


                  7.16 Financial  Conditions to Closing. The books of Mercantile
as of the Adjustment  Date and as of Closing shall reflect  compliance  with the
following financial conditions:

         (a) Other Real Estate and  Non-Performing  Loans.(a)+Other  Real Estate
and  Non-Performing  Loans.  Mercantile's  other  real  estate  owned  ("OREO"),
non-performing loans ("NPAs") (those loans not accruing interest on Mercantile's
books),  loans 90 days or more  past  due,  and  other  loans  under  regulatory
requirements classified as substandard or non-performing shall not exceed $2.495
million and the ratio of OREO and NPAs to Shareholder  Equity plus Allowance for
Loan Losses ("ALL") shall not exceed 42.5%.

         (b)  Loan  Loss  Reserves.(b)+Loan  Loss  Reserves.   Mercantile  shall
maintain  an ALL of no less than  $962  thousand,  less  reserves  deleted  from
Schedule  2.1(c)  pursuant to the terms of Section  2.1(c)(ii)(A),  and 2.95% of
total loans,  whichever is greater,  and a ratio of ALL to NPAs of not less than
38.5% ("Coverage Ratio").



Section 8. CONDITIONS TO THE OBLIGATIONS OF MERCANTILE..

                  The obligations of Mercantile under this Agreement are, at its
option,  subject to the fulfillment at or prior to the Effective Date of each of
the  following  conditions  provided,  however,  that  any  one or  more of such
conditions  may be waived by the Board of Directors of Mercantile at any time at
or prior to the Effective Date:



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<PAGE>



                  8.1 Representations  and Warranties.  The  representations and
warranties  of  Sierra  in  Section 5 hereof  shall be true and  correct  in all
material respects on and as of the Effective Date with the same effect as though
such  representations and warranties had been made on and as of such date except
as to any  representation or warranty which  specifically  related to an earlier
date.


                  8.2 Compliance  and Performance Under Agreement.  Sierra shall
have  performed  and complied in all material  respects with all of the terms of
this  Agreement  and the Merger  Agreement  required to be performed or complied
with by them at or prior to the Effective Date.


                  8.3 Material  Adverse  Change.  No materially  adverse  change
shall have  occurred  since  September  30,  1996,  in the  business,  financial
condition,  results of operations  or properties of Sierra and its  subsidiaries
taken as a whole, and Sierra shall not be engaged in, or a party to or so far as
Sierra is aware,  threatened  with,  and to Sierra's  knowledge no grounds shall
exist for, any legal action or other proceeding before any court, any arbitrator
of  any  kind  or any  government  agency  if,  in the  reasonable  judgment  of
Mercantile,  such legal action or proceeding could  materially  adversely affect
Sierra or its business, financial condition, results of operations or assets.


                  8.4 Approval of Agreement.  The Merger, this Agreement and the
Merger  Agreement shall have been duly approved by the  affirmative  vote of the
holders of a majority of the outstanding shares of Mercantile common stock.


                  8.5 Officer's  Certificate.  Mercantile  shall have received a
certificate,  dated  the  Effective  Date,  signed  on  behalf  of Sierra by its
President and Chief  Financial  Officer,  certifying to the  fulfillment  of the
conditions stated in Sections 8.1-8.4 hereof.


                  8.6 Opinion  of  Counsel.   Sierra  shall  have  delivered  to
Mercantile  such  documents as may  reasonably  be requested  by  Mercantile  to
evidence  compliance  by Sierra with the  provisions  of this  Agreement and the
Merger Agreement, including an opinion of its counsel in a form substantially as
set forth on Exhibit 8.6.


                  8.7 Absence of Legal  Impediment.  On the Effective  Date, the
absence of: (a) any suit, action or proceeding,  or order against  Mercantile or
Sierra  with  respect  to  any  part  of  this  Agreement,  or  the  Merger,  or
challenging,  enjoining,  or otherwise  affecting the consummation of the Merger
which, in the opinion of counsel for Mercantile,  materially  affects the Merger
or the consummation of this Agreement;  or (b) any pending or threatened  action
or  proceeding  by the United  States  Department  of  Justice or other  federal
governmental agency seeking to enjoin,  prohibit or otherwise impede the Merger;
or (c) a banking  moratorium  or other  suspension  of  payment  by banks in the
United States or any general  limitation on extension of credit by lending banks
in the United States.


                  8.8 Effectiveness of Registration Statement. The Sierra common
stock to be issued to Mercantile  shareholders  shall have been determined to be
exempt from registration or the Sierra Registration Statement and any amendments
or supplements  thereto shall have become  effective under the 1933 Act. No stop
order suspending the effectiveness of the Sierra Registration Statement shall be
in effect and no  proceedings  for such  purpose  shall have been  initiated  or
threatened  by or before the  Commission.  All state  securities  and "blue sky"
permits or approvals  required to consummate the  transactions  contemplated  by
this Agreement and the Merger Agreement shall have been received.


                  8.9 Government  Approvals. The Government Approvals shall have
been  received  and  shall be in  effect,  and all  conditions  or  requirements
prescribed by law or by any such approval shall have been  satisfied;  provided,
however that no Government  Approval shall be deemed to have been received if it
shall  require the  divestiture  or cessation of any of the present  business or
operations  conducted by either of the parties  hereto or shall impose any other
condition or requirement, which Mercantile in its reasonable judgment shall deem
to be materially  burdensome (in which case  Mercantile  shall  promptly  notify
Sierra).


                  8.10 Tax  Opinion or Ruling.  Sierra and Mercantile shall have
received the opinion referred to in Section 7.10 hereof which opinion shall meet
the requirements of such section.



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<PAGE>


                  8.11 Unaudited  Financials.  Not later than the  Determination
Date,  Sierra  shall  have  furnished  Mercantile  a copy of its  most  recently
prepared unaudited year-to-date  consolidated financial statements,  including a
balance sheet and year-to-date statement of income of Sierra.


                  8.12 Closing  Documents.  Mercantile  shall have received such
certificates  and other  closing  documents  as  counsel  for  Mercantile  shall
reasonably request.


                  8.13 Fairness  Opinion.  The Board of Directors of  Mercantile
shall have received an opinion of its  financial  advisor to the effect that the
terms of the Merger are fair,  from a financial point of view, to Mercantile and
its shareholders.


Section 9. CLOSING.


                  9.1 Closing Date. The closing of the transactions contemplated
by this  Agreement  ("Closing")  shall,  unless  another date,  time or place is
agreed to in  writing  by  Sierra  and  Mercantile,  be held at the  offices  of
McCutchen,  Doyle, Brown & Enersen,  San Francisco,  California on the Effective
Date.


                  9.2 Delivery  of  Documents.  At the  Closing,  the  opinions,
certificates  and other  documents  required to be delivered  by this  Agreement
shall be delivered.


                  9.3 Filings.  At the  Closing,  Sierra  and  Mercantile  shall
instruct  its  representatives  to make or  confirm  such  filings  as  shall be
required  in the opinion of counsel to Sierra and  Mercantile  to give effect to
the Merger.


Section 10. EXPENSES.


                  10.1 Merger Related Expenses. Each party hereto agrees to pay,
without  right of  reimbursement  from the other  party and  whether  or not the
transactions  contemplated  by this Agreement or the Merger  Agreement  shall be
consummated, the costs incurred by such party incident to the performance of its
obligations  under this Agreement and the Merger  Agreement,  including  without
limitation,  costs  incident to the  preparation of the Merger  Agreement,  this
Agreement,  the Sierra Registration Statement and the Proxy Materials (including
the audited financial  statements of the parties contained therein) and incident
to the  consummation  of the Merger and of the other  transactions  contemplated
herein and in the Merger  Agreement,  including  the fees and  disbursements  of
counsel, accountants,  consultants and financial advisers employed by such party
in connection therewith. Mercantile shall pay or accrue up to $10,000 toward the
printing costs of the Sierra Registration  Statement and the Proxy Materials and
the costs of distributing the Proxy Materials and other information  relating to
these  transactions to shareholders of Mercantile.  All fees payable pursuant to
state "blue-sky"  securities laws, fees related to obtaining a tax opinion,  the
fee required to be paid to the Commission to register the Sierra Shares shall be
shared equally by the parties.  For purposes of determining Adjusted Book Value,
all expenses of Mercantile in connection  with the Merger shall be treated as if
they  have  been  paid  by  accrued  on  the  books  of  Mercantile  as  of  the
Determination Date.


                  10.2 Miscellaneous   Mercantile  Expenses.   For  purposes  of
determining  Adjusted Book Value,  as of the Adjustment  Date  Mercantile  shall
accrue on its books all  expenses or  contractual  obligations  that are or will
become due as of the Effective Date that have been incurred by Mercantile or for
which Mercantile will be liable, regardless of whether Mercantile has received a
billing or invoice for such expenses or obligations.


Section 11. AMENDMENT; TERMINATION..


                  11.1 Amendment. This Agreement and the Merger Agreement may be
amended by Sierra and Mercantile at any time prior to the Effective Date without
the  approval of the  shareholders  of  Mercantile  with respect to any of their
terms except, after Mercantile  shareholders have approved the Merger, the terms
relating to the form or amount of  consideration  to be delivered to  Mercantile
shareholders in the Merger.



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<PAGE>



                  11.2 Termination.  This Agreement and the Merger Agreement may
be terminated as follows:

                  (a)      By the mutual consent of the Boards of Directors of
both Sierra and Mercantile at any time prior to the consummation of the Merger.

                  (b) By the Board of  Directors  of Sierra on or after June 30,
1997,  if (i) any of the  conditions  in Section 7 to which the  obligations  of
Sierra are subject have not been  fulfilled,  or (ii) such  conditions have been
fulfilled or waived by Sierra and  Mercantile  shall have failed to complete the
Merger.

                  (c) By the Board of  Directors  of Sierra if (i) it has become
aware of any facts or circumstances of which it was not aware on the date hereof
and which materially  adversely affect Mercantile or its properties,  operations
or financial  condition,  (ii) a materially  adverse  change shall have occurred
since  September  30, 1996,  in the business,  financial  condition,  results of
operations or properties of Mercantile, or (iii) there has been material failure
or  prospective  material  failure on the part of  Mercantile to comply with its
obligations  under this  Agreement  or the  Merger  Agreement,  or any  material
failure or prospective failure to comply with any of the conditions set forth in
Section 7 hereof.

                  (d) By the Board of  Directors  of  Sierra  in the event  that
Mercantile  enters into a  transaction  or series of  transactions  with a third
person or group  providing for the  acquisition of all or a substantial  part of
Mercantile,  whether by way of merger,  exchange or  purchase of stock,  sale of
assets or otherwise.

                  (e) By the Board of Directors of  Mercantile  on or after June
30,  1997,  if (i) any of the  conditions  contained  in  Section 8 to which the
obligations  of  Mercantile  are subject have not been  fulfilled,  or (ii) such
conditions  have been  fulfilled  or waived  but  Sierra  shall  have  failed to
complete the Merger; provided, however, that if Sierra is engaged at the time in
litigation (including an administrative appeal procedure) relating to an attempt
to  obtain  one or more of the  Governmental  Approvals  or if  Sierra  shall be
contesting in good faith any litigation  which seeks to prevent  consummation of
the  transactions  contemplated  hereby,  such  nonfulfillment  shall  not  give
Mercantile the right to terminate  this Agreement  until the earlier of (A) June
30, 1997,  and (B) 60 days after the  completion of such  litigation  and of any
further  regulatory or judicial action pursuant  thereto,  including any further
action by a  governmental  agency as a result of any judicial  remand,  order or
directive or otherwise or any waiting period with respect thereto  provided such
date shall not occur beyond December 31, 1997.

                  (f) By the  Board of  Directors  of  Mercantile  if (i) it has
become aware of any facts or circumstances of which it was not aware on the date
hereof and which can or do materially adversely affect Sierra or its properties,
operations or financial  condition,  (ii) a materially adverse change shall have
occurred since September 30, 1996 in the business,  financial condition, results
of operations or assets of Sierra, or (iii) there has been a material failure or
prospective  material  failure  on  the  part  of  Sierra  to  comply  with  its
obligations  under this  Agreement  or the  Merger  Agreement,  or any  material
failure or prospective  material  failure to comply with any condition set forth
in Section 8.

                  (g) By the  Board of  Directors  of  Mercantile  in the  event
Sierra or its affiliates enter into a Business Combination with any other entity
which does not expressly  contemplate the performance by Sierra or its successor
in interest of Sierra's obligations under this Agreement and Sierra indicates it
will not consummate this Agreement.


                  11.3 Termination.  The power of  termination  hereunder may be
exercised by Sierra or  Mercantile,  as the case may be, only by giving  written
notice,  signed on  behalf  of such  party by its  Chief  Executive  Officer  or
President, to the other party.


                  11.4 Breach  of  Obligations.  If there  has  been a  material
breach by either party in the performance of any of the obligations herein which
shall not have been cured within ten business days after written  notice thereof
has been given to the defaulting party, the  nondefaulting  party shall have the
right to terminate this Agreement upon written notice to the other party. In any
event,  the  nondefaulting  party shall have no  obligation  to  consummate  any
transaction  or take any further  steps  toward such  consummation  contemplated
hereunder until such breach is cured.



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                  11.5 Termination and Expenses..

                  (a) If this Agreement is terminated for any reason, the Merger
Agreement shall automatically terminate. Termination of this Agreement shall not
terminate or affect the  obligations  of the parties to pay expenses as provided
in Section 10, to maintain the  confidentiality of the other party's information
pursuant  to  Section  3.1(f),  or the  provisions  of this  Section  11.5 or of
Sections 12.1-12.7.

                  (b) If Sierra  terminates  this Agreement  pursuant to Section
11.2(d)  or  because  of a  willful  breach  of  the  Agreement  by  Mercantile,
Mercantile shall pay to Sierra,  on demand,  the sum of $350,000.  If Mercantile
terminates  this Agreement  pursuant to Section  11.2(g) or because of a willful
breach of the Agreement by Sierra,  Sierra shall pay to  Mercantile,  on demand,
the sum of  $350,000.  In each  case,  the  amount  indicated  shall  be  deemed
consideration  or  liquidated   damages  for  expenses  incurred  and  the  lost
opportunity  cost for time  devoted  to the  transactions  contemplated  by this
Agreement, provided, however, each party shall remain liable for expenses as set
forth in Section 10.


Section 12. MISCELLANEOUS..


                  12.1 Notices. Any notice or other  communication  required or
permitted  under this Agreement  shall be effective only if it is in writing and
delivered personally,  or by overnight courier, or by facsimile or sent by first
class United  States  mail,  postage  prepaid,  registered  or  certified  mail,
addressed as follows:

To Sierra:                                         To Mercantile:

SierraWest Bancorp                                 Mercantile
10181 Truckee-Tahoe Airport Road                   455 Capitol Mall
Truckee, California 96160                          Sacramento, California 95814
Attention:  William T. Fike                        Attention:  Michael Burkart
President & CEO                                    President & CEO


With a copy to:                                    With a copy to:

McCutchen, Doyle, Brown & Enersen                  Lillick & Charles
Three Embarcadero Center                           Two Embarcadero Center
San Francisco, CA  94111                           San Francisco, CA 94111
Attention:  James M. Rockett                       Attention:  Ronald W. Bachli

or to such other  address as either party may  designate by notice to the other,
and shall be deemed to have been given upon receipt.


                  12.2 Binding Agreement.  This Agreement is binding upon and is
for the  benefit of Sierra  and  Mercantile  and its  successors  and  permitted
assigns.  This  Agreement  is not  made for the  benefit  of any  person,  firm,
corporation  or  association  not a party  hereto,  and no other  person,  firm,
corporation or association shall acquire or have any right under or by virtue of
this  Agreement.  No party  may  assign  this  Agreement  or any of its  rights,
privileges, duties or obligations hereunder without the prior written consent of
the other party to this Agreement.


                  12.3 Survival   of   Representations   and   Warranties.    No
investigation  by Sierra  or  Mercantile  made  before or after the date of this
Agreement shall affect the representations and warranties which are contained in
this  Agreement  and such  representations  and  warranties  shall  survive such
investigation,   provided  that  representations,   warranties,   covenants  and
agreements  of Sierra  and  Mercantile  contained  in this  Agreement  shall not
survive the Closing.



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<PAGE>



                  12.4 Governing Law.  This Agreement shall be governed by and
construed in accordance with he laws of the State of California.


                  12.5 Attorneys'  Fees.  In any action at law or suit in equity
in relation to this Agreement, the prevailing party in such action or suit shall
be entitled to receive a reasonable  sum for its  attorneys'  fees and all other
reasonable costs and expenses incurred in such action or suit.


                  12.6 Entire  Agreement;  Severability.  This Agreement and the
documents, certificates, agreements, letters, schedules and exhibits attached or
required to be  delivered  pursuant  hereto set forth the entire  agreement  and
understandings  of the  parties  in  respect  of the  transactions  contemplated
hereby,  and  supersede all prior  agreements,  arrangements  and  understanding
relating to the subject matter hereof. Each provision of this Agreement shall be
interpreted in a manner to be effective and valid under  applicable  law, but if
any provision  hereof shall be prohibited or ruled invalid under applicable law,
the validity, legality and enforceability of the remaining provisions shall not,
except as otherwise required by law, be affected or impaired as a result of such
prohibition or ruling.


                  12.7 Counterparts.  This  Agreement may be executed in several
counterparts,  each of  which  shall be  deemed  an  original,  but all of which
together shall constitute one and the same instrument.

                  IN WITNESS  WHEREOF,  Sierra and  Mercantile  have each caused
this Agreement and Plan of Merger to be signed by its Chief Executive Officer or
Chairman as of the day and year first above written.


MERCANTILE BANK                            SIERRAWEST BANCORP



By__/s/  Michael Burkart___________        By_/s/  William T. Fike____________
Michael Burkart                            William T. Fike
President and Chief Executive Officer      President and Chief Executive Officer


                                           SIERRAWEST BANK



                                           By__/s/  William T. Fike____________
                                           William T. Fike
                                           President and Chief Executive Officer





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                                                   2

                                                 EXHIBIT A

                                              Merger Agreement

 ...........................This merger agreement ("Merger Agreement") dated as
of ___________, 1997 between SierraWest Bank, ("Subsidiary"), a California 
banking corporation, and Mercantile Bank ("Mercantile"), a California banking
corporation is entered into as follows:

Section 13.  Outstanding Shares.

                  (a) Mercantile is a California banking corporation  authorized
by the California State Banking Department.  Mercantile has 1,000,000 authorized
shares of no par value common stock of which 336,980 are outstanding. Mercantile
has no outstanding shares of preferred stock, options or warrants.

                  (b) Subsidiary is a California banking corporation  authorized
by  the  California  State  Banking  Department.   Subsidiary  has  ____________
authorized  shares  of  common  stock  of  which  __________  are  outstanding.
Subsidiary has no outstanding shares of preferred stock, options or warrants.

Section 14.  The Merger.

                  Mercantile shall be merged into Subsidiary ("Merger").

Section 15.  Conversion of Shares.

          Upon  consummation  of the  Merger,  (i)  each  outstanding  share  of
Mercantile,  other than shares held by shareholders  who perfect their rights as
dissenting  shareholders under California law, shall be converted into the right
to receive the exchange amount of $_____ per share ("Per Share Exchange Amount")
comprised of a Cash Component of 50% and a Stock Component  consisting of common
stock of  SierraWest  Bancorp  valued at 50%,  in  accordance  with an  election
described in Section __ below;  and (ii) the  outstanding  shares of  Subsidiary
shall remain the  outstanding  shares of the Surviving  Corporation  and are not
affected by the Merger; and there will be no other outstanding shares,  options,
warrants or other stock rights to acquire any shares of Mercantile.


16. Terms of Cash/Stock Election.Election.

                  The Exchange  Amount will be allocated to the Stock  Component
and the Cash Component in accordance the following  election and procedures (the
"Cash/Stock Election").

                  Mercantile  shareholders  may elect to  receive  the  Exchange
Amount in either all  SierraWest  Bancorp  shares or all cash. If no election is
made, the shareholder  will receive cash equal to 50% and stock of a value equal
to 50%.

                  If  the  aggregate  Cash  Component  is  undersubscribed,  the
unsubscribed  portion of this minimum aggregate Cash Component will be allocated
pro rata (by  number  of  shares)  among  all  Mercantile  shareholders;  if the
aggregate  Cash  Component  is  oversubscribed,   the  Cash  Component  of  each
Mercantile  shareholder  electing  to receive  cash will be reduced pro rata (by
number of shares electing to receive cash).  The total of the Cash Component and
the Stock Component will always equal the Exchange Amount.

                  Mercantile shareholders who make a Cash/Stock Election have no
assurance  that  they  will in fact  receive  all cash or all  stock.  They will
receive cash in excess of the above  amount per share only to the extent  excess
cash is available  under the limitation  set forth above,  and they will receive
all stock only if other Mercantile  shareholders  elect at least an aggregate of
50% in cash.



                                      151
<PAGE>



Section 17.  Articles of Incorporation and By-Laws.

                  (a) The Articles of  Incorporation of Subsidiary  shall,  upon
the  Effective  Date,  be  the  Articles  of   Incorporation  of  the  Surviving
Corporation.  It is the intention of the parties that the Merger will be treated
as a tax free  reorganization  pursuant to Section 368 of the  Internal  Revenue
Code.

                  (b) The By-Laws of Subsidiary,  as they exist on the Effective
Date,  shall be the  By-Laws  of the  Surviving  Corporation  until the same are
amended.

Section 18.  Exchange of Shares.

                  The  conversion of shares as provided in the Merger  Agreement
shall occur  automatically upon the Effective Date without action by the holders
thereof.  Each holder of Mercantile  Shares shall on or after the Effective Date
surrender each certificate  representing Mercantile Shares to the Exchange Agent
appointed  by the parties and shall be entitled to receive in exchange  therefor
the Per Share Exchange Amount.

Section 19.  Effect of Merger And Effective Date.

                  The effect of the Merger and the Effective  Date of the Merger
are as prescribed by law.

Section 20.  Officers and Directors

                  The officers and directors of Subsidiary holding office on the
Effective Date shall be the officers and directors of the Surviving  Corporation
until  removed as  provided  by law or until the  election  of their  respective
successors.

Section 21.  Acts of Merging Corporation

                  Mercantile,  as the  merging  corporation,  shall from time to
time, as and when  requested by the Surviving  Corporation,  execute and deliver
all such  documents  and  instruments  and take all  such  action  necessary  or
desirable to evidence or carry out this Merger.

                  All capitalized  term herein shall have the meanings  ascribed
to them in this Merger Agreement; provided, however, if no meaning is separately
ascribed to such  capitalized  terms in this Merger  Agreement,  then such terms
will have the meanings ascribed to them in the Agreement and Plan of Acquisition
and Merger dated __________, 1997.





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In witness  whereof  the  parties  have  executed  this Merger Agreement.


                                  Mercantile Bank


                                         By___________________________________
                                             Michael Burkart
                                             President


                                         By___________________________________
                                             Secretary


                                  SierraWest Bank


                                         By___________________________________
                                             William T. Fike
                                             President


                                         By___________________________________
                                             Secretary







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(Letterhead of Carpenter & Company)            


                                                  ANNEX B



January 23, 1997




Board of Directors
Mercantile Bank
455 Capital Mall, Suite 100
Sacramento, California 95814

Members of the Board:

We understand that Mercantile Bank (the Company")  proposes to enter into a Plan
of  Acquisition  and  Merger  Agreement  dated  as of  January  23,  1997  ("the
Agreement) with SierraWest  Bancorp  pursuant to which  SierraWest  Bancorp will
acquire all the shares of common  stock of  Mercantile  Bank in  exchange  for a
combination of common shares of SierraWest Bancorp and cash valued at $6,601,000
subject to adjustment as set forth in the Agreement ("the  Consideration").  You
have asked for our  opinion as to whether  the  Consideration  to be received by
shareholders of the company, as described in the Agreement, taken as a whole are
fair from a financial point of view to such shareholders, as of the date hereof.

In connection  with our opinion,  we have among other  activities:  (a) reviewed
certain publicly available financial and other data with respect to the Company,
including the consolidated financial statements for recent years and for interim
periods to November 30, 1996, and certain other relevant financial and operating
data  relating to the Company made  available to us from  published  sources and
from  the  internal  records  of the  Company;  (b)  reviewed  the  terms of the
Agreement;  (c) reviewed certain  historical market prices and trading volume of
common  stock of  California  banking  companies;  (d)  compared the Company and
SierraWest  Bancorp from a financial  point of view with certain other companies
in  the  financial  services  industry  which  we  deemed  to be  relevant;  (e)
considered the financial  terms, to the extent publicly  available,  of selected
recent transactions which we deem to be comparable,  in whole or in part, to the
Transaction;  (f) reviewed and discussed with  representatives of the management
of the Company certain  information of a business and financial nature regarding
the  Company,  including  financial  forecasts  and related  assumptions  of the
Company;  (g) made  inquiries and held  discussions on the  Transaction  and the
Agreement and other matters relating thereto with the Company's counsel; and (h)
performed such other analyses and examinations as we have deemed appropriate.

In connection  with our review,  we have not  independently  verified any of the
foregoing  information  with respect to the Company.  We have relied on all such
information  provided by the Company and have assumed that all such  information
is complete and accurate in all  material  respects.  We have assumed that there
have been no material  changes in the  Company's  assets,  financial  condition,
results of operations, business or prospects since the respective dates of their
last  financial  statements  made  available  to us. We have relied on advice of
counsel to the Company as to all legal matters with respect to the Company,  the



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Transaction,  and the  Agreement.  In addition,  we have not made an independent
evaluation,  appraisal  or  physical  inspection  of the  assets  or  individual
properties of the Company,  nor have we been furnished with any such appraisals.
Further,  our opinion is based upon economic,  monetary,  and market  conditions
existing as of the date hereof.

Based upon the foregoing, and in reliance thereon, it is our opinion that, as of
today's date, the  Consideration is fair to the shareholders of the Company from
a financial point of view.

This opinion is furnished  pursuant to our  engagement  letter dated  January 3,
1997,  and is solely for the benefit of the Board of Directors and  stockholders
of the Company.  Except as provided in such engagement letter,  this opinion may
not be used or referred to by the Company or quoted or  disclosed  to any person
in any manner without our prior written consent.


Very truly yours,

SEAPOWER CARPENTER CAPITAL, INC.,
dba CARPENTER & COMPANY




By:  /s/John Flemming
     John Flemming




JB/gw





                                      155
                                      
<PAGE>



                                       ANNEX C


                   CHAPTER 13 OF THE CALIFORNIA GENERAL CORPORATION CODE

ss. 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-term  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-term 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 the provisions of this
section and Sections 1301,  1302, 1303 and 1304;  provided,  however,  that this
provisions  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, 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-term  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.

ss. 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,  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



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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.

                  (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)  [sic] 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.

ss. 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.

ss. 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.

                  (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.

ss. 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.



                                      157
<PAGE>



                  (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.

ss. 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 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).

ss. 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.

ss. 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.



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ss. 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  incidents 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.

ss. 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.

ss. 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.

ss. 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 reorganization or merger.





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ss. 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  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.

                  [3/97]








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