GLACIER BANCORP INC
S-4, 2000-12-21
SAVINGS INSTITUTION, FEDERALLY CHARTERED
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<PAGE>   1
   As filed with the Securities and Exchange Commission on December 21, 2000
                                                     Registration No. 333-______
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                                 ---------------
                                    FORM S-4
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933
                                 ---------------
                              GLACIER BANCORP, INC.
             (Exact name of registrant as specified in its charter)

<TABLE>
<CAPTION>

  <S>                                    <C>                               <C>
              DELAWARE                              6035                            81-0519541
  (State or other jurisdiction of       (Primary standard industrial      (I.R.S. employer identification no.)
   incorporation or organization)        classification code number)
</TABLE>

            49 COMMONS LOOP, KALISPELL, MONTANA 59901 (406) 756-4200
   (Address, including zip code, and telephone number, including area code, of
                   registrant's principal executive offices)
                                   ----------
                               MICHAEL J. BLODNICK
                      President and Chief Executive Officer
                                 49 Commons Loop
                            Kalispell, Montana 59901
                                 (406) 756-4200
       (Name, address, including zip code, and telephone number, including
                               area code, of agent
                                  for service)
                                   -----------
                          Copies of communications to:

STEPHEN M. KLEIN, ESQ.                                       BARRY P. TAFF, ESQ.
WILLIAM E. BARTHOLDT, ESQ.                       Silver, Freedman & Taff, L.L.P.
Graham & Dunn P.C.                            1100 New York Avenue NW, Suite 700
1420 Fifth Avenue, 33rd Floor                       Washington, D.C.  20005-3934
Seattle, Washington  98101
                                       -----------
 APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE OF SECURITIES TO THE PUBLIC:
     The date of mailing of the enclosed Prospectus/Joint Proxy Statement to
   stockholders of Glacier Bancorp and WesterFed Financial Corporation.

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

<TABLE>
<CAPTION>

                                     CALCULATION OF REGISTRATION FEE
========================================================================================================
Title of Each                               Proposed Maximum      Proposed Maximum     Amount of
Class of Securities    Amount Being         Offering Price        Aggregate            Registration
Being Registered       Registered(1)        Per Share(2)(3)       Offering Price(3)    Fee(3)
--------------------------------------------------------------------------------------------------------
<S>                    <C>                  <C>                   <C>                  <C>
Common Stock,
   $.01 Par Value      5,114,909            $11.83                $60,507,045          $15,973.86
========================================================================================================
</TABLE>

(1) Represents the estimated number of shares of Glacier Bancorp, Inc.'s common
    stock issuable in exchange for 4,649,917 shares of WesterFed Financial
    Corporation common stock that are outstanding or issuable pursuant to stock
    options, that may be exchanged under the terms of the Plan and Agreement of
    Merger described in this Registration Statement.
(2) Represents the maximum price per share of Glacier common stock issuable in
    exchange for WesterFed common stock (based upon the exchange ratio).
(3) Estimated solely for the purpose of calculating the registration fee
    pursuant to Rule 457(f) under the Securities Act of 1933, as amended, based
    on the average of the high and low prices ($22.0625) for shares of WesterFed
    common stock quoted on the Nasdaq National Market on December 19, 2000,
    multiplied by 4,649,917, the maximum number of shares of WesterFed to be
    exchanged pursuant to the Plan and Agreement of Merger, including shares
    issuable upon the exercise of outstanding stock options, reduced by the
    amount of cash to be paid by the Registrant for such shares.
                                    --------

        THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT FILES
A FURTHER AMENDMENT THAT SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT
SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF THE 1933
ACT, OR UNTIL THIS REGISTRATION STATEMENT BECOMES EFFECTIVE ON SUCH DATE AS THE
SECURITIES AND EXCHANGE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a), MAY
DETERMINE.

<PAGE>   2


[GLACIER BANCORP LOGO]                                [WESTERFED FINANCIAL LOGO]

                 MERGER PROPOSED -- YOUR VOTE IS VERY IMPORTANT

        The boards of directors of Glacier Bancorp, Inc. and WesterFed Financial
Corporation have agreed on a merger. The merger is structured so that Glacier
will be the surviving publicly-traded company. The merger agreement provides
that WesterFed stockholders will be able to elect cash, Glacier common stock or
a combination of both. The value of the merger consideration to be received for
each share of WesterFed common stock will be based on the average per share
closing price of Glacier common stock for the twenty trading days ending on the
fifteenth trading day immediately preceding the date the merger is completed. If
__________, 2001, were the merger completion date WesterFed stockholders would
receive calculated merger consideration of either $___ in cash or ____ shares of
Glacier common stock for each share of WesterFed common stock. Glacier
stockholders will continue to own their existing shares. For an explanation of
the merger consideration, see "THE MERGER - Merger Consideration" in this
document.

        The merger cannot be completed unless both the Glacier and WesterFed
stockholders adopt the merger agreement. Each of us has scheduled special
meetings for our stockholders to vote on this matter. YOUR VOTE IS VERY
IMPORTANT. Whether or not you plan to attend the WesterFed or Glacier special
meeting, please take the time to vote by completing and mailing the enclosed
proxy form to us.

        The dates, times and places of the special meetings are as follows:

        FOR GLACIER STOCKHOLDERS                    FOR WESTERFED STOCKHOLDERS
        __________, 2001                            __________, 2001
        9:00 a.m. local time                        9:00 a.m. local time
        The Outlaw Inn, 1701 Highway 93 South       2601 Garfield Street
        Kalispell, Montana                          Missoula, Montana  59801

        Glacier common stock is listed on the Nasdaq Stock Market under the
symbol "GBCI." WesterFed common stock is listed on the Nasdaq Stock Market under
the symbol "WSTR."

        This document provides you with detailed information about the proposed
merger and the merger agreement. We encourage you to read this entire document
carefully. In addition, you may obtain information about our companies from
publicly available documents that we have filed with the Securities and Exchange
Commission.

Michael J. Blodnick                        Ralph K. Holliday
President and Chief Executive Officer      President and Chief Executive Officer
Glacier Bancorp, Inc.                      WesterFed Financial Corporation

--------------------------------------------------------------------------------
        See "Risk Factors" beginning on page ____ for a description of factors
that may affect the value of the Glacier common stock to be issued in the merger
along with several other risk factors that should be considered by stockholders
with respect to the merger.

        Neither the SEC nor any state securities regulators has approved the
Glacier common shares to be issued under this document or determined if this
document is accurate or adequate. Any representation to the contrary is a
criminal offense. These securities are not savings or deposit accounts or other
obligations of any bank or nonbank subsidiary of any of the parties, and they
are not insured by the Federal Deposit Insurance Corporation, the Bank Insurance
Fund or any governmental agency.
--------------------------------------------------------------------------------

        Prospectus/joint proxy statement dated as of ___________, 2001 and first
mailed to stockholders of Glacier on or about ________, 2001 and to stockholders
of WesterFed on or about ________, 2001.




<PAGE>   3

                              GLACIER BANCORP, INC.
                                 49 COMMONS LOOP
                            KALISPELL, MONTANA 59901

                    NOTICE OF SPECIAL MEETING OF STOCKHOLDERS
                         TO BE HELD ______________, 2001

TO THE STOCKHOLDERS OF GLACIER BANCORP, INC.:

        NOTICE IS HEREBY GIVEN that a special meeting of stockholders of Glacier
Bancorp, Inc. will be held on ________________, 2001, at 9:00 a.m. local time,
at The Outlaw Inn, 1701 Highway 93 South, Kalispell, Montana. The special
meeting is for the following purposes:

1.      MERGER AGREEMENT. To consider and vote upon a proposal to adopt the
        Amended and Restated Plan and Agreement of Merger, dated as of September
        20, 2000, between Glacier Bancorp, Inc. and WesterFed Financial
        Corporation, under the terms of which WesterFed Financial Corporation
        will merge with and into Glacier Bancorp, Inc., as more fully described
        in the accompanying prospectus/joint proxy statement. The merger
        agreement is attached as Appendix A to the prospectus/joint proxy
        statement which accompanies this notice.

2.      OTHER MATTERS. To act upon any other matters as may properly come before
        the special meeting, or any postponement or adjournment of it.

        Only holders of record of Glacier Bancorp, Inc. common stock, at 5:00
p.m. on ______________, 2000 the record date for the special meeting, are
entitled to notice of, and to vote at, the special meeting or any adjournments
or postponements of it. The affirmative vote of the holders of a majority of the
outstanding shares of Glacier Bancorp, Inc. common stock is required for
adoption of the merger agreement. As of November 30, 2000, there were 4,116, 111
shares of Glacier Bancorp, Inc. common stock outstanding.

        All stockholders are cordially invited to attend the special meeting
personally. Whether or not you are able to do so, it is important that you
complete, sign, date, and promptly return the accompanying proxy in the enclosed
postage-paid envelope in order to vote your shares of Glacier common stock.
Stockholders may revoke proxies previously submitted by completing a later-dated
proxy, by written revocation delivered to Glacier's Secretary at or before the
special meeting, or by appearing and voting at the special meeting in person.
Attendance at the special meeting will not of itself revoke a previously
submitted proxy.

                                             By Order of the Board of Directors,



                                             James H. Strosahl,
                                             Secretary

Kalispell, Montana
___________, 2001

YOUR BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS THAT YOU VOTE "FOR" THE ADOPTION
OF THE MERGER AGREEMENT.

YOUR VOTE IS IMPORTANT REGARDLESS OF THE NUMBER OF SHARES YOU OWN, AND WHETHER
OR NOT YOU PLAN TO ATTEND THE SPECIAL MEETING. APPROVAL OF THE MERGER REQUIRES
THE AFFIRMATIVE VOTE OF HOLDERS OF A MAJORITY OF THE OUTSTANDING SHARES OF
GLACIER COMMON STOCK. IN ORDER TO ENSURE THAT THE REQUISITE VOTES ARE OBTAINED
AND A QUORUM IS ATTAINED, WE URGE YOU TO SIGN, DATE, AND RETURN THE ENCLOSED
PROXY FORM.

<PAGE>   4


                         WESTERFED FINANCIAL CORPORATION
                                110 East Broadway
                             Missoula, Montana 59802
                                 (406) 721-5254

                            NOTICE OF SPECIAL MEETING
                          TO BE HELD ON _________, 2001


To the Stockholders of WesterFed Financial Corporation:

        You are cordially invited to attend a special meeting of stockholders of
WesterFed Financial Corporation at 9:00 a.m., local time, on ________________,
2001, at the Missoula Southgate Branch of Western Security Bank, a wholly owned
subsidiary of the Company, located at 2601 Garfield Street, Missoula, Montana,
to vote on a proposal recommended by the Board of Directors of WesterFed to:

        -       adopt the Amended and Restated Plan and Agreement of Merger,
                dated as of September 20, 2000, by and between Glacier Bancorp,
                Inc. and WesterFed Financial Corporation; and

        -       transact such other business which may properly be presented at
                the special meeting or any adjournment or postponement of the
                special meeting.

        Only stockholders of record at the close of business on ________, 2000
are entitled to vote at the special meeting or any adjournments or postponements
of the special meeting. A list of WesterFed stockholders entitled to vote at the
special meeting will be available for examination by any stockholder at the main
office of WesterFed during ordinary business hours for at least ten days prior
to the special meeting, as well as at the special meeting. The affirmative vote
of the holders of a majority of the outstanding shares of WesterFed common stock
is required for adoption of the merger agreement. As of _________, 2000, there
were _______ shares of WesterFed common stock outstanding.

        To ensure your representation at the special meeting, please sign, date
and promptly return the accompanying proxy form in the enclosed envelope whether
or not you plan to attend the meeting. Stockholders may revoke proxies
previously submitted by completing a later-dated proxy, by written revocation
delivered to WesterFed's Secretary at or before the special meeting, or by
appearing and voting at the special meeting in person. Attendance at the special
meeting will not of itself revoke a previously submitted proxy. Please review
the prospectus/joint proxy statement accompanying this notice for more complete
information regarding the merger proposed for your consideration at the special
meeting.

                                           BY ORDER OF THE BOARD OF DIRECTORS


                                           Ralph K. Holliday
                                           President and Chief Executive Officer
Missoula, Montana
___________, 2001

THE BOARD OF DIRECTORS OF WESTERFED UNANIMOUSLY RECOMMENDS THAT YOU VOTE "FOR"
THE ADOPTION OF THE MERGER AGREEMENT. YOUR SUPPORT IS APPRECIATED.

YOUR VOTE IS IMPORTANT REGARDLESS OF THE NUMBER OF SHARES YOU OWN, AND WHETHER
OR NOT YOU PLAN TO ATTEND THE SPECIAL MEETING. APPROVAL OF THE MERGER REQUIRES
THE AFFIRMATIVE VOTE OF HOLDERS OF A MAJORITY OF THE OUTSTANDING SHARES OF
WESTERFED COMMON STOCK. IN ORDER TO ENSURE THAT THE REQUISITE VOTES ARE OBTAINED
AND A QUORUM IS ATTAINED, WE URGE YOU TO SIGN, DATE, AND RETURN THE ENCLOSED
PROXY FORM.

<PAGE>   5

                      REFERENCES TO ADDITIONAL INFORMATION

        THIS PROSPECTUS/JOINT PROXY STATEMENT INCORPORATES IMPORTANT BUSINESS
AND FINANCIAL INFORMATION ABOUT GLACIER AND WESTERFED FROM DOCUMENTS THAT ARE
NOT INCLUDED IN OR DELIVERED WITH THIS DOCUMENT. YOU CAN OBTAIN DOCUMENTS
INCORPORATED BY REFERENCE INTO THIS PROSPECTUS/JOINT PROXY STATEMENT BY
REQUESTING THEM IN WRITING OR BY TELEPHONE FROM THE APPROPRIATE COMPANY AT THE
FOLLOWING ADDRESSES:

                              GLACIER BANCORP, INC.
                                 49 Commons Loop
                               Kalispell, MT 59901
                  ATTN: James H. Strosahl, Corporate Secretary
                            Telephone: (406) 756-4263

                         WESTERFED FINANCIAL CORPORATION
                                110 East Broadway
                                  P.O. Box 5388
                               Missoula, MT 59802
                  ATTN: Marcia L. Johnson, Corporate Secretary
                            Telephone: (406) 721-5254

        You will not be charged for these documents that you request. If you
would like to request documents, please do so by ______________, 2001 in order
to receive them before the Glacier special stockholders meeting and by
_________, 2001 in order to receive them before the WesterFed special
stockholders meeting. You can also obtain these and other documents filed by
Glacier or WesterFed with the Securities and Exchange Commission from the SEC's
website at "www.sec.gov."

        See "WHERE YOU CAN FIND MORE INFORMATION" and "INFORMATION INCORPORATED
BY REFERENCE."

<PAGE>   6

                                TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                                                  PAGE

<S>                                                                                               <C>
QUESTIONS AND ANSWERS ABOUT THE MERGER AND THE MEETINGS.............................................1


SUMMARY.............................................................................................3


SELECTED HISTORICAL FINANCIAL DATA.................................................................11


HISTORICAL FINANCIAL DATA..........................................................................12


RISK FACTORS.......................................................................................14


FORWARD-LOOKING STATEMENTS.........................................................................17


GLACIER SPECIAL STOCKHOLDERS MEETING...............................................................18

    Date, Time, Place and Purpose..................................................................18
    Record Date; Shares Outstanding and Entitled to Vote...........................................18
    Vote Required..................................................................................18
    Voting, Solicitation, and Revocation of Proxies................................................18

WESTERFED SPECIAL STOCKHOLDERS MEETING.............................................................19

    Purpose of the Meeting.........................................................................19
    Voting and Revocability of Proxies.............................................................19
    Vote Required..................................................................................20
    Solicitation of Proxies........................................................................21

BACKGROUND OF AND REASONS FOR THE MERGER...........................................................21

    Background of the Merger.......................................................................21
    Reasons For The Merger - Glacier...............................................................22
    Recommendation for the Glacier Board of Directors..............................................24
    Opinion of Glacier's Financial Advisor.........................................................24
    Reasons for the Merger - WesterFed.............................................................30
    Recommendation of the WesterFed Board of Directors.............................................32
    Opinion of WesterFed's Financial Advisor.......................................................32

THE MERGER.........................................................................................36

    Basic Terms of the Merger......................................................................37
    Merger Consideration...........................................................................37
    Election Procedures............................................................................39
    Election Procedure Examples....................................................................40
    Allocation Procedures..........................................................................42
    Example of Allocation Mechanism................................................................42
    Cash for Fractional Shares.....................................................................44
    Exchange of WesterFed Stock Certificates for Non-Election Shares...............................44
    Deemed Issuance of Glacier Common Stock........................................................44
    WesterFed Stock Option Agreement...............................................................44
    Voting Agreements..............................................................................46
    Amendment or Termination of the Merger Agreement...............................................46
    Payment of Liquidated Damages upon Termination in Certain Circumstances........................47
</TABLE>

                                       i

<PAGE>   7
<TABLE>
<CAPTION>

<S>                                                                                               <C>
    Conditions to Consummation of the Merger.......................................................48
    Conduct of Business Pending the Merger.........................................................48
    Directors and Executive Officers After the Merger..............................................49
    Employee Benefit Plans; Stock Option Plans.....................................................50
    Interests of Certain Persons in the Merger.....................................................50
    Material United States Federal Income Tax Consequences.........................................52
    Accounting Treatment of the Merger.............................................................55
    Dissenter's Rights of Appraisal................................................................56
    Resale of Glacier Stock........................................................................57
    No Solicitation................................................................................58

UNAUDITED COMBINED CONDENSED PRO FORMA FINANCIAL STATEMENTS........................................59


NOTES TO UNAUDITED COMBINED CONDENSED PRO FORMA FINANCIAL STATEMENTS...............................63


STOCK PRICE AND DIVIDEND INFORMATION...............................................................68


BUSINESSES OF THE PARTIES TO THE MERGER............................................................70

    Information Concerning Glacier.................................................................70
        General....................................................................................70
        Proposed Glacier Branch Acquisitions.......................................................71
    Information Concerning WesterFed...............................................................72

SUPERVISION AND REGULATION.........................................................................74


DESCRIPTION OF GLACIER'S CAPITAL STOCK.............................................................80


COMPARISON OF CERTAIN RIGHTS OF HOLDERS OF gLACIER AND WESTERFED COMMON STOCK......................81


CERTAIN LEGAL MATTERS..............................................................................87


EXPERTS............................................................................................88


WHERE YOU CAN FIND MORE INFORMATION................................................................88


INFORMATION INCORPORATED BY REFERENCE..............................................................89


OTHER MATTERS......................................................................................90

    WesterFed......................................................................................91
    Glacier........................................................................................91
</TABLE>


Appendix A - Amended and Restated Plan and Agreement of Merger

Appendix B - Delaware Statute Regarding Dissenters' Rights of Appraisal

Appendix C - Stock Option Agreement

Appendix D - Opinion of D.A. Davidson & Co.

Appendix E - Opinion of Putnam Lovell Securities, Inc.


                                       ii
<PAGE>   8
                   QUESTIONS AND ANSWERS ABOUT THE MERGER AND THE MEETINGS

Q.      WHY ARE THE TWO COMPANIES PROPOSING TO MERGE?

A.      The WesterFed board of directors believes that a combination with
        Glacier is in the best interests of WesterFed stockholders, particularly
        in a transaction where a significant portion of the merger consideration
        will be in the form of Glacier common stock which will be received on a
        tax deferred basis.

        Glacier's board of directors likewise believes that a combination with
        WesterFed is in the best interests of Glacier stockholders. In addition,
        Glacier wants to better serve customers in WesterFed's service areas and
        to expand Glacier's presence in those markets.

Q.      WHAT AM I BEING ASKED TO VOTE ON?

A.      You are being asked to adopt the merger agreement.

Q.      WHAT WILL WESTERFED STOCKHOLDERS RECEIVE IN THE MERGER?

A.      WesterFed stockholders can elect to receive cash, Glacier common stock,
        or a combination of both. Approximately 25 days prior to the anticipated
        merger completion date, the exchange agent will mail to each WesterFed
        stockholder of record as of 5 days prior to such mailing date an
        election form to be used by such stockholder to make his or her
        election. The value of the merger consideration for each share of
        WesterFed common stock will be based on the average per share closing
        price of Glacier common stock for the twenty trading days ending on the
        fifteenth trading day immediately preceding the date the merger is
        completed.

        If _________, 2000, were the merger completion date WesterFed
        stockholders would receive calculated merger consideration of either
        $___ in cash or ____ shares of Glacier common stock for each share of
        WesterFed common stock.

        In other words, you can elect to receive cash for all of your WesterFed
        shares, Glacier common stock for all of your WesterFed shares, or a
        combination of cash and Glacier common stock for your WesterFed shares.
        After all the elections have been made by WesterFed stockholders, the
        elections will be adjusted as provided in the merger agreement. The
        adjustments will ensure that the total cash to be paid by Glacier does
        not exceed $41.3 million, and that the total cash payment does not
        exceed 55% of the value of the aggregate merger consideration based upon
        the closing price of Glacier stock on the date the merger is completed.
        An adjustment will also be made, if necessary, to ensure that the
        maximum number of WesterFed shares that may be exchanged for Glacier
        common stock will not exceed 1.1 times the total number of WesterFed
        common stock issued and outstanding immediately prior to completion of
        the merger divided by the final exchange ratio. The final exchange ratio
        is determined by dividing the average per share closing price of Glacier
        common stock for the twenty day period described above into the merger
        consideration per share. The adjustments will be made on a pro rata
        basis. Because of the possible adjustments to the elections, WesterFed
        stockholders may receive stock and/or cash in amounts that are not
        consistent with their elections.

        Glacier stockholders will not change their Glacier common shares as a
        result of the merger.

Q.      WHAT SHOULD I DO NOW?

A.      You should read this document and complete, sign and date the enclosed
        proxy

                                       1
<PAGE>   9

        form and mail it to us in the enclosed return envelope as soon as
        possible. If you sign and send the proxy form and do not indicate how
        you want to vote, we will count your proxy as a vote in favor of the
        merger agreement. The boards of directors of Glacier and WesterFed
        recommend voting FOR the adoption of the merger agreement.

Q.      WHAT WILL BE THE EFFECT IF I DO NOT VOTE?

A.      If you do not return your proxy form and do not otherwise vote at the
        special meeting, it will have the same effect as if you voted against
        the merger agreement.

Q.      HOW WILL MY SHARES BE VOTED IF I RETURN A BLANK PROXY?

A.      If you are a stockholder of record, which means you hold your shares in
        certificate form, and you sign, date and send in your proxy form and do
        not indicate how you want to vote, your proxy will be counted as a vote
        in favor of the merger agreement.

Q.      IF MY SHARES ARE HELD IN "STREET NAME" BY A BROKER, WILL THE BROKER VOTE
        THE SHARES FOR ME?

A.      Brokers may not vote your shares on the merger agreement. You must
        instruct your broker to vote your shares on the merger agreement,
        following the directions provided by your broker. Your failure to
        instruct your broker to vote will be equivalent to voting against the
        merger agreement.

Q.      CAN I VOTE MY SHARES IN PERSON?

A.      Yes, if you own your shares in certificate form. You may attend the
        special meeting and vote your shares in person rather than signing and
        mailing your proxy form. However, in order to ensure that your vote is
        counted at the special meeting we recommend that you sign, date and
        promptly mail the enclosed proxy form.

Q.      CAN I CHANGE MY VOTE AFTER SUBMITTING MY PROXY FORM?

A.      Yes. You can change your vote at any time prior to the special meeting
        by submitting a later-dated signed proxy form or by attending the
        special meeting and voting in person.

Q.      HOW DO I MAKE A MERGER CONSIDERATION ELECTION?

A.      Approximately 25 days prior to the anticipated merger completion date,
        the exchange agent will mail to each WesterFed stockholder of record as
        of 5 days prior to such mailing date an election form and other
        transmittal materials to be used by the stockholder to elect to receive
        cash, Glacier common stock, or a combination of both for his or her
        WesterFed shares. If your WesterFed shares are held in "street name" by
        a broker, your broker will forward an election form to you. For an
        election form to be effective, it must be properly completed and
        executed by the WesterFed stockholder and timely returned, along with
        the WesterFed stock certificates as to which the election is being made,
        to the exchange agent by the election deadline. The election deadline is
        the anticipated completion date of the merger which will be a specified
        date on the election form.

        An election form may be revoked or changed by the person submitting it
        at or prior to the election deadline. The exchange agent will have
        reasonable discretion to determine whether any election, revocation or
        change has been properly or timely made and to disregard immaterial
        defects in the election forms, and any good faith decisions of the
        exchange agent regarding such matters will be binding and conclusive.
        Neither Glacier nor the exchange agent will be under any obligation to
        notify any person of any defect in an election form.

Q.      SHOULD I SEND IN MY STOCK CERTIFICATES NOW?

                                       2
<PAGE>   10

A.      No. WesterFed stockholders will be sent written instructions from the
        exchange agent to return their stock certificates with their election
        forms. These materials will be forwarded to WesterFed stockholders
        approximately 25 days prior to the anticipated merger completion date.
        Glacier stockholders will keep their current stock certificates.

Q.      WHEN DO YOU EXPECT THE MERGER TO BE COMPLETED?

A.      We hope to complete the merger in the first quarter of 2001.

Q.      WILL I CONTINUE TO RECEIVE DIVIDENDS ON MY SHARES?

A.      The merger agreement permits WesterFed to pay, prior to completion of
        the merger, regular quarterly cash dividends to its stockholders and a
        bonus dividend consistent with past practice not to exceed $325,000 in
        the aggregate for all WesterFed stockholders to be declared in December,
        2000. WesterFed has agreed in the merger agreement to coordinate with
        Glacier the declaration and payment date of the last WesterFed dividend
        prior to completion of the merger to preclude any loss or duplication of
        dividends received by WesterFed stockholders.

        Glacier has paid regular quarterly cash dividends on Glacier common
        stock. For the third quarter of 2000, Glacier paid a cash dividend of
        $0.15 per share. The payment of dividends by Glacier in the future must
        be approved and declared by Glacier's board of directors and will depend
        on Glacier's business conditions, financial condition and earnings, and
        other factors. For information on recent cash dividends paid by Glacier
        and WesterFed, see "STOCK PRICE AND DIVIDEND INFORMATION."

Q.      WHAT SHOULD I DO IF I HAVE QUESTIONS?

A.      If you have any questions about the merger or the special meetings you
        should contact:

        FOR GLACIER INFORMATION

        Glacier Bancorp Inc.
        49 Commons Loop
        Kalispell, MT  59901
        Attention:  James Strosahl
        (406) 756-4263

        FOR WESTERFED INFORMATION

        WesterFed Financial Corporation
        110 East Broadway
        Missoula, MT 59802
        Attention:  Marcia L. Johnson
        (406) 721-5254

                                     SUMMARY

        This section briefly summarizes some of the information in this
document. Because this is a summary, it does not contain all of the information
that may be important to you. You should read this entire document and its
appendices carefully before you decide how to vote.

                                  THE COMPANIES

GLACIER BANCORP, INC.

49 Commons Loop
Kalispell, Montana 59901
(406) 756-4263

        Glacier is a registered bank holding company incorporated under Delaware
law. Its principal business activities are conducted through seven bank
subsidiaries:

-       Glacier Bank of Kalispell;
-       Glacier Bank of Whitefish;
-       Glacier Bank of Eureka;
-       First Security Bank of Missoula;
-       Valley Bank of Helena;
-       Big Sky Western Bank; and
-       Mountain West Bank of Coeur d'Alene, Idaho

                                       3
<PAGE>   11

        Glacier also has a non-bank subsidiary, Community First, Inc., which
offers full service brokerage services through Raymond James Financial, an
unaffiliated brokerage firm.

        At November 1, 2000, Glacier had facilities in 25 towns in Montana and
five towns in Idaho, operating 28 full-service offices and one limited service
office. Glacier's principal executive offices are located in Kalispell, Montana.

        At September 30, 2000, Glacier had total assets of approximately $1.0
billion, deposits of approximately $717 million and stockholders' equity of
approximately $92 million.

        Additional information concerning Glacier and its business is included
in "BUSINESSES OF THE PARTIES TO THE MERGER - Information Concerning Glacier."

WESTERFED FINANCIAL CORPORATION

110 East Broadway
Missoula, Montana 59802
(406) 721-5254

        WesterFed is a unitary savings and loan holding company incorporated
under Delaware law. WesterFed owns all of the stock of Western Security Bank, a
federal stock savings bank. WesterFed through its savings bank subsidiary serves
the financial needs of 14 Montana communities through a main office located in
Missoula, 26 branch offices and one loan servicing office. At September 30,
2000, WesterFed had total assets of approximately $933 million, deposits of
approximately $609 million and stockholders' equity of approximately $92
million.

        Additional information concerning WesterFed and its business is included
in "BUSINESSES OF THE PARTIES TO THE MERGER - Information Concerning WesterFed."

                              THE SPECIAL MEETINGS

GLACIER SPECIAL MEETING

        Date, Time and Place. The Glacier special meeting will be held on
_________, 2001, at The Outlaw Inn, 1701 Highway 93 South, Kalispell, Montana,
at 9:00 a.m., local time, unless adjourned or postponed.

        Record Date. You can vote at the Glacier special meeting if you owned
Glacier common stock at the close of business on _______, 2000.

        Matters to be Considered. At the Glacier special meeting you will be
asked to adopt the merger agreement.

        Vote Required. The proposal to adopt the merger agreement will be passed
if a majority of the outstanding shares of Glacier common stock are voted in
favor of it.

        Proxies. You can revoke your proxy before it is voted either by sending
to Glacier a revocation notice or a new proxy or by attending the Glacier
special meeting and voting in person. You will not revoke your proxy simply by
attending the Glacier special meeting.

WESTERFED SPECIAL MEETING

        Date, Time and Place. The WesterFed special meeting will be held on
_________, 2001, at 2601 Garfield, Street, Missoula, Montana, at 9:00 a.m.,
local time, unless adjourned or postponed.

        Record Date.  You can vote at the WesterFed special meeting if you owned
WesterFed common stock at the close of business on ___________, 2000.

        Matters to be Considered. At the WesterFed special meeting, you will be
asked to adopt the merger agreement.

        Vote Required. The proposal to adopt the merger agreement will be passed
if a majority of the outstanding shares of WesterFed common stock are voted in
favor of it.

        Proxies. You can revoke your proxy before it is voted either by sending
to WesterFed a revocation notice or a new proxy or by attending the WesterFed
special meeting and voting in person.

                                       4
<PAGE>   12
        You will not revoke your proxy simply by attending the WesterFed special
meeting.

                                   THE MERGER

        We have attached the merger agreement to this document as Appendix A.
Please read the merger agreement. It is the legal document that governs the
merger.

GENERAL

        We propose a merger of WesterFed and Glacier, with Glacier as the
surviving publicly-traded company. We hope to complete this transaction in the
first quarter of 2001.

MERGER CONSIDERATION

        WesterFed stockholders can elect to receive either cash, Glacier common
stock, or a combination of both. The value of the merger consideration for each
share of WesterFed common stock will be based on the average per share closing
price of Glacier common stock for the twenty trading days ending on the
fifteenth trading day immediately preceding the date the merger is completed. If
the calculated merger consideration per share is less than $19.94 as of such
date, the WesterFed board of directors has the right to terminate the merger
agreement subject to the right of Glacier's board of directors to increase the
calculated merger consideration per share to $19.94 as of such date.

        The WesterFed board of directors may also decide to complete the merger
where the calculated merger consideration is less than $19.94, if it determines
that the lower value remains in the best interest of WesterFed stockholders. See
"--Right to Terminate" below.

        If _________, 2000 were the merger completion date, WesterFed
stockholders would receive calculated merger consideration of either $___ in
cash or ____ shares of Glacier common stock for each share of WesterFed common
stock.

        In other words, you can elect to receive cash for all of your WesterFed
shares, Glacier common stock for all of your WesterFed shares, or a combination
of cash and Glacier common stock for your WesterFed shares. Glacier will not
issue any fractional shares. Instead, you will receive cash in lieu of any
fractional share owed to you in an amount based on the closing price of Glacier
common stock on the date the merger is completed. After all the elections have
been made, the elections will be adjusted, as provided in the merger agreement.
The adjustments will ensure that the total cash to be paid by Glacier does not
exceed $41.3 million, and that the total cash payment does not exceed 55% of the
value of the aggregate merger consideration based upon the closing price of
Glacier stock on the date the merger is completed. An adjustment will also be
made, if necessary, to ensure that the maximum number of WesterFed shares that
may be exchanged for Glacier common stock will not exceed 1.1 times the total
number of WesterFed shares issued and outstanding immediately prior to
completion of the merger divided by the final exchange ratio. The final exchange
ratio is determined by dividing the average per share closing price of Glacier
common stock for the twenty day period described above into the merger
consideration per share. The adjustments will be made on a pro rata basis.
Because of the possible adjustments to the elections, WesterFed stockholders may
receive stock and/or cash in amounts that are not consistent with their
elections.

EACH WESTERFED STOCKHOLDER SHOULD:

        -       COMPLETE, DATE AND SIGN THE ENCLOSED PROXY FORM AND RETURN IT
                PROMPTLY IN THE ENCLOSED PRE-PAID, PRE-ADDRESSED ENVELOPE.

        If you are a record holder, which means your WesterFed shares are in
certificate form, you will need to exchange your WesterFed common stock
certificates for Glacier common stock certificates or cash. DO NOT SEND IN YOUR
WESTERFED STOCK CERTIFICATES AT THIS TIME. The exchange agent will be mailing
you an election form. You will tender your WesterFed stock certificates with
your election form. If your WesterFed shares are held in "street name" by a
broker, the election form will be provided by your broker, you will provide your
election instructions to your broker, and your broker will provide the election
form and stock certificates to the exchange agent.

                                       5
<PAGE>   13

EACH GLACIER STOCKHOLDER SHOULD:

        -       COMPLETE AND SIGN THE ENCLOSED PROXY FORM AND RETURN IT PROMPTLY
                IN THE ENCLOSED PRE-PAID, PRE-ADDRESSED ENVELOPE. You will not
                need to exchange your Glacier common stock certificates.

NECESSITY FOR TIMELY RETURN OF ELECTION FORM

        If a WesterFed stockholder fails to deliver a properly completed and
signed election form, together with the WesterFed stock certificates for which
the election is made, to the exchange agent by the election deadline, his or her
WesterFed shares will be deemed to be non-election shares. As a result, such
stockholder will have no choice as to whether he or she receives cash or Glacier
common stock in payment for such shares. Approximately 25 days prior to the
anticipated merger completion date, the exchange agent will mail to each
WesterFed stockholder of record as of 5 days prior to such mailing date an
election form to be used to make his or her election. The election form will
specify the election deadline. See "THE MERGER - Election Procedures."

WESTERFED STOCK OPTIONS

        The options to purchase WesterFed common stock under WesterFed's
director and employee stock option plans will be converted into options to
purchase Glacier common stock with appropriate adjustments to the number of
shares subject to the options and to the exercise price based upon the final
exchange ratio.

REASONS FOR THE MERGER

        The WesterFed board believes that, based upon the extremely competitive
environment in the banking industry and the limited opportunities available to
it as a stand alone institution to improve its stock performance, a combination
with Glacier is in the best interests of its stockholders. In addition, the
WesterFed board believes that the customers and community served by it will
benefit from the merger.

        The Glacier board believes that the merger is consistent with Glacier's
established strategic goals, and is in the best interests of its stockholders.
The Glacier board also believes that the merger will allow Glacier to better
serve customers in WesterFed's service areas and to expand Glacier's presence in
those markets.

        You can find a more detailed discussion of reasons for the merger in
this document under "BACKGROUND OF AND REASONS FOR THE MERGER."

RECOMMENDATIONS TO STOCKHOLDERS

        Glacier. The Glacier board of directors has unanimously approved the
merger agreement and the issuance of common shares in the merger and believes
that the merger is in the best interests of its stockholders and that the
consideration to be paid by it in the merger is fair to its stockholders from a
financial point of view. THE GLACIER BOARD THEREFORE RECOMMENDS A VOTE FOR
ADOPTION OF THE MERGER AGREEMENT.

        WesterFed. The WesterFed board of directors has unanimously approved the
merger agreement and believes that the merger is in the best interests of its
stockholders and that the consideration to be received by its stockholders in
the merger is fair from a financial point of view. THE WESTERFED BOARD THEREFORE
RECOMMENDS A VOTE FOR ADOPTION OF THE MERGER AGREEMENT.

OPINIONS OF FINANCIAL ADVISORS

        Glacier. D.A. Davidson & Co. has delivered its opinion to the Glacier
board that as of September 20, 2000 and the date of this document, based upon
and subject to the various considerations set forth in Davidson's opinion, the
consideration to be paid by Glacier in the merger is fair to Glacier's
stockholders from a financial point of view. A copy of Davidson's opinion is
attached to this document as APPENDIX D. You should read it completely to
understand the assumptions made, matters considered and limitations of the
review made by Davidson in providing this opinion.

        WesterFed. Putnam Lovell Securities, Inc., has delivered its opinion to
the WesterFed Board

                                       6
<PAGE>   14

that as of September 20, 2000 and the date of this document, based upon and
subject to the various considerations set forth in Putnam Lovell's opinion, the
merger consideration is fair to WesterFed's stockholders from a financial point
of view. A copy of Putnam Lovell's opinion is attached to this document as
APPENDIX E. You should read it completely to understand the assumptions made,
matters considered and limitations of the review made by Putnam Lovell in
providing this opinion.

WESTERFED HAS GRANTED GLACIER AN OPTION

        To induce Glacier to enter into the merger agreement, WesterFed granted
Glacier an option to purchase authorized but unissued shares of WesterFed common
stock. Glacier may exercise this option in certain limited circumstances. If
Glacier was to exercise this option in full, it would acquire a number of shares
equal to 19.9% of the outstanding shares of WesterFed common stock at $15.75 per
share. See "THE MERGER - WesterFed Stock Option Agreement." A copy of the Stock
Option Agreement is attached to this document as APPENDIX C.

APPRAISAL RIGHTS

        If you are a WesterFed stockholder, Delaware law permits you to dissent
from the merger. If you dissent, the fair value of your WesterFed common stock
may be determined by a court and paid to you in cash. To do this, you must
follow certain procedures, including giving WesterFed certain notices and not
voting your WesterFed shares in favor of the merger agreement. You will not
receive the merger consideration if you dissent and follow all of the required
procedures. Instead, you will only receive the value of your WesterFed shares in
cash as determined by a court. See "THE MERGER - Dissenter's Rights of
Appraisal." The relevant sections of Delaware law governing this process are
attached to this document as APPENDIX B.

        Glacier stockholders do not have dissenters' rights with respect to the
merger.

SHARE OWNERSHIP OF WESTERFED'S MANAGEMENT AND DIRECTORS

        On _____, 2000, the record date for the WesterFed special meeting,
directors and executive officers of WesterFed and their affiliates beneficially
owned and were entitled to vote _____ shares of WesterFed common stock, or ___%
of the WesterFed shares outstanding on that date. The WesterFed directors and
executive officers who have executed voting agreements will, and all other
WesterFed directors and executive officers have indicated that they intend to,
vote all ___ shares of WesterFed common stock owned by them in favor of the
merger agreement.

SHARE OWNERSHIP OF GLACIER'S MANAGEMENT AND DIRECTORS

        On _____, 2000, the record date for the Glacier special meeting,
directors and executive officers of Glacier and their affiliates beneficially
owned and were entitled to vote _____ shares of Glacier common stock, or ___% of
the Glacier shares outstanding on that date. The Glacier directors have executed
voting agreements and will vote all shares of Glacier common stock owned by them
in favor of the merger agreement. Glacier believes its executive officers intend
to vote all shares of Glacier common stock owned by them in favor of the merger
agreement.

WHAT NEEDS TO BE DONE TO COMPLETE THE MERGER

        The completion of the merger depends on a number of conditions being
met, which include among others, the following:

        -       adoption of the merger agreement by both the Glacier and
                WesterFed stockholders;

        -       approval of the merger by regulators; and

        -       receipt of tax opinions regarding the tax consequences of the
                merger.

        Where law permits, the board of directors of Glacier or WesterFed could
decide to complete the merger even though one or more of its conditions to

                                       7
<PAGE>   15

closing has not been met. We cannot be certain when, or if, the conditions to
the closing will be satisfied or waived, or that the merger will be completed.

RIGHT TO TERMINATE

        The boards of directors of Glacier and WesterFed may jointly agree in
writing to terminate the merger agreement without completing the merger. In
addition, either party can individually terminate the merger agreement prior to
the completion of the merger if:

        -       the other party materially breaches any of the representations
                or warranties it made or materially fails to comply with any of
                its obligations under the merger agreement;

        -       the merger is not completed by June 30, 2001;

        -       the parties do not obtain the required regulatory approvals;

        -       either party's stockholders do not adopt the merger agreement;
                or

        -       other conditions to closing the merger have not been satisfied.

        WesterFed's board of directors can also terminate the merger agreement
if the value of the calculated merger consideration per share is less than
$19.94 on the date it is determined, subject to the right of Glacier's board of
directors to increase the calculated merger consideration per share to $19.94 as
of such date. This right of termination will arise if the average per share
closing price of Glacier common stock for the twenty trading days ending on the
fifteenth trading day prior to completion of the merger is less than $9.00
because this will result in the calculated merger consideration per share being
less than $19.94.

        Glacier's board of directors can also elect to terminate the merger
agreement if the calculated merger consideration per share is less than $18.29
on the date it is determined. This right of termination will arise if the
average per share closing price of Glacier common stock for the twenty-trading
days ending on the fifteenth trading day prior to completion of the merger is
less than $7.50 because this will result in the calculated merger consideration
per share being less than $18.29.

LIQUIDATED DAMAGES

        The merger agreement provides that in certain limited circumstances
Glacier or WesterFed would be required to pay to the other liquidated damages
upon termination of the merger agreement. If Glacier is obliged to pay WesterFed
liquidated damages, it would be in the amount of $3.5 million. If WesterFed is
obliged to pay Glacier liquidated damages, it would be in the amount of $4.5
million. If Glacier is entitled to liquidated damages, it must give up all of
its option rights to acquire WesterFed shares as a condition to receiving
payment of liquidated damages. See "THE MERGER - Payment of Liquidated Damages
upon Termination in Certain Circumstances."

INTERESTS OF WESTERFED DIRECTORS AND OFFICERS IN THE MERGER THAT ARE DIFFERENT
FROM YOUR INTERESTS

        Some of the WesterFed directors and officers have interests in the
merger that are different from, or in addition to, their interests as
stockholders in WesterFed. These interests exist because of agreements that
WesterFed directors and officers have with WesterFed and Glacier under the terms
of the merger agreement, including the following:

        -       Ralph K. Holliday, President and a director of WesterFed, will
                become a director of Glacier;

        -       WesterFed director and employee stock option agreements provide
                for the accelerated vesting of unvested stock options upon
                WesterFed stockholder approval of the merger, or in some
                instances, upon completion of the merger;

        -       WesterFed's board of directors may, in its sole discretion, at
                any time prior to

                                       8
<PAGE>   16

                completion of the merger extend the exercise period for options
                previously granted by WesterFed for a period of up to 2 years
                after the optionee's cessation of service with WesterFed,
                Glacier or their respective subsidiaries.

        -       Ralph K. Holliday, President of WesterFed, James A. Salisbury,
                Chief Financial Officer of WesterFed and three officers of
                WesterFed's savings bank subsidiary have entered into one year
                employment agreements with Glacier to become effective upon
                completion of the merger which provide that Glacier will honor
                and cause to be paid the change in control benefits contained in
                each such officer's current employment or change in control
                agreement with WesterFed or its savings bank subsidiary; and

        -       Glacier has agreed to indemnify and hold harmless WesterFed's
                existing officers and directors for premerger acts and omissions
                to the same extent such persons are indemnified and held
                harmless under Delaware law and WesterFed's formation documents;
                and Glacier has also agreed to provide directors' and officers'
                liability insurance for a period of six years for WesterFed's
                existing officers and directors.

        The members of the board of directors of WesterFed knew about these
additional interests, and considered them, when they approved the merger
agreement. See "THE MERGER - Interests of Certain Persons in the Merger."

THE MERGER IS EXPECTED TO BE TAX-FREE, EXCEPT FOR CASH RECEIVED BY WESTERFED
STOCKHOLDERS

        It is expected that the merger will constitute a tax-free reorganization
for United States federal income tax purposes. Accordingly, no gain or loss will
be recognized by WesterFed stockholders on the conversion of WesterFed common
stock solely into Glacier common stock by reason of the merger. However,
WesterFed stockholders who receive cash, whether pursuant to an affirmative
election to receive such cash or not, or by reason of cash received in lieu of
fractional shares of Glacier common stock, will be subject to the recognition of
gain up to the amount of cash received. See "THE MERGER - Material United States
Federal Income Tax Consequences." WesterFed stockholders are urged to consult
their own tax advisors as to the specific tax consequences to them of the
merger.

ACCOUNTING TREATMENT

        The merger will be accounted for as a "purchase" in accordance with
accounting principles generally accepted in the United States of America.

DIRECTORS OF GLACIER AFTER THE MERGER

        Following the merger, Glacier's board of directors will consist of those
persons who were Glacier directors immediately before the merger and Ralph K.
Holliday, President and a director of WesterFed.

                                       9
<PAGE>   17

SHARE INFORMATION AND MARKET PRICES

        Glacier stock is quoted on the Nasdaq National Market under the symbol
"GBCI." WesterFed stock is quoted on the Nasdaq National Market under the symbol
"WSTR." See "STOCK PRICE AND DIVIDEND INFORMATION."

        The following table sets forth the last reported sale price per share of
Glacier stock and of WesterFed stock, each as reported on the Nasdaq National
Market, in addition to the equivalent per share price for WesterFed stock, on
September 19, 2000, the last full trading day prior to the public announcement
of the execution of the merger agreement) and on _____________, 2000, the most
recent date for which it was practicable to obtain market price data prior to
the printing of this prospectus/joint proxy statement. Holders of WesterFed
stock are urged to obtain current market quotations for shares of Glacier stock.

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------------
PRICE PER SHARE:                                  September 19, 2000          ____________, 2000
-------------------------------------------------------------------------------------------------------
<S>                                               <C>                         <C>
        Glacier Common Stock                            $12.81                         $
-------------------------------------------------------------------------------------------------------
        WesterFed Common Stock                          $15.75                         $
-------------------------------------------------------------------------------------------------------
        WesterFed Equivalent Pro Forma(1)               $22.25                         $
-------------------------------------------------------------------------------------------------------
</TABLE>


(1)     Giving effect for the merger and computed by (a) multiplying the closing
        price per share of Glacier common stock by an assumed exchange ratio of
        1.1 shares of Glacier stock and (b) adding $9.05 in cash per WesterFed
        share, which assumes a Glacier stock average closing price of $12.00.

                                       10
<PAGE>   18
                     SELECTED HISTORICAL AND PRO FORMA PER SHARE DATA

        The following tables set forth for Glacier and WesterFed, separately and
on a combined basis, certain selected historical and unaudited pro forma
equivalent per share data as of and for the nine months ended September 30,
2000, and as of and for the year ended December 31, 1999, giving effect to the
merger using the purchase method of accounting. These tables assume that the
100% of the outstanding shares of WesterFed common stock are exchanged for
Glacier common stock in the merger. The information in the tables is derived
from the historical financial statements for Glacier and WesterFed and the
unaudited combined condensed pro forma financial statements, giving effect to
the merger, appearing elsewhere in this prospectus/joint proxy statement or
incorporated herein by reference. This data should be read in conjunction with
such financial statements. See "UNAUDITED COMBINED CONDENSED PRO FORMA FINANCIAL
STATEMENTS" and "INFORMATION INCORPORATED BY REFERENCE."


<TABLE>
<CAPTION>

                                                                           For the nine       For the year
                                                                           months ended          ended
                                                                       September 30, 2000  December 31, 1999
                                                                       ------------------  -----------------
<S>                                                                    <C>                 <C>
Earnings per common and common equivalent share(1):
    Glacier - basic                                                     $            0.90  $            1.08
    Glacier - diluted                                                                0.89               1.06
    Glacier combined pro forma - basic                                               0.90               1.02
    Glacier combined pro forma - diluted                                             0.89               0.99
    Glacier cash dividends per share                                                 0.44               0.58
    Glacier combined pro forma cash dividends per share                              0.44               0.58

    WesterFed - basic                                                                1.63               1.70
    WesterFed - diluted                                                              1.59               1.63
    WesterFed equivalent pro forma - basic                                           0.99               1.12
    WesterFed equivalent pro forma - diluted                                         0.98               1.09
    WesterFed cash dividends per share                                               0.51               0.66
    WesterFed equivalent pro forma cash dividends per share                          0.48               0.64


                                                                                At                 At
                                                                       September 30, 2000  December 31, 1999
                                                                       ------------------  -----------------
Book value per share (2):
    Glacier                                                             $            8.03  $            7.44
    Glacier combined pro forma                                                       9.13               8.42
    WesterFed                                                                       22.36              20.57
    WesterFed equivalent pro forma                                                  10.04               9.26
</TABLE>



(1)     The Glacier combined pro forma earnings per common share and common
        equivalent share were calculated by using aggregate historical earnings
        information for Glacier and WesterFed divided by the average pro forma
        shares outstanding of the combined entity. The average pro forma shares
        of the combined entity were calculated by combining the Glacier
        historical average shares and the historical average shares of WesterFed
        as adjusted by the conversion number of 1.1. The WesterFed equivalent
        pro forma per share amounts were computed by multiplying the Glacier
        combined pro forma amounts by the conversion number of 1.1.

(2)     The Glacier combined pro forma book value per share is based on the
        aggregate pro forma common stockholders' equity divided by the total pro
        forma common shares of the combined entity. The WesterFed equivalent pro
        forma book value per share at period end represents the Glacier combined
        pro forma amounts multiplied by the conversion number of 1.1.

                                       11
<PAGE>   19

                       SELECTED HISTORICAL FINANCIAL DATA

        The tables on the following pages set forth, for the respective periods
specified, selected historical consolidated financial data for each of Glacier
and WesterFed. The data has been derived in part from and should be read in
conjunction with, the consolidated financial statements and notes thereto and
other financial information with respect to Glacier and WesterFed set forth
elsewhere in this prospectus/joint proxy statement or incorporated herein by
reference, and such data are qualified in their entirety by reference thereto.

        All adjustments that the respective managements of Glacier and WesterFed
believe to be necessary for a fair presentation of the data have been included.
Results of interim periods are not indicative of results for a full year. The
September 30, 2000 ratios have been annualized where necessary.

GLACIER BANCORP, INC.

        The following table presents unaudited information concerning certain
financial information and ratios for Glacier Bancorp, Inc. Amounts are in
thousands, except per share data.
<TABLE>
<CAPTION>

                                       As of and for the      ---------------------------------------------------
                                       Nine Months Ended                      As of and for the
                                         September 30,                     Year ended December 31,
                                                              ---------------------------------------------------
                                        2000        1999       1999       1998       1997       1996       1995
                                     ----------    -------    -------    -------    -------    -------    -------
<S>                                  <C>            <C>        <C>        <C>        <C>        <C>        <C>
SUMMARY OF OPERATIONS:
  Interest income ................   $   57,939     46,723     64,719     58,828     55,612     50,481     44,407
  Interest expense ...............       27,360     19,703     27,635     25,470     24,925     22,639     19,285
                                     ----------    -------    -------    -------    -------    -------    -------
    Net interest income ..........       30,579     27,020     37,084     33,358     30,687     27,842     25,122
  Provision for loan losses ......        1,483      1,246      1,723      1,735      1,052      1,017        652
                                     ----------    -------    -------    -------    -------    -------    -------
    Net interest income after
      provision for loan losses ..       29,096     25,774     35,361     31,623     29,635     26,825     24,470
  Non-interest income ............       10,097      9,752     12,809     13,596     11,057     10,421      9,068
  Non-interest expense ...........       23,095     21,145     29,096     27,170     23,709     23,027     18,954
                                     ----------    -------    -------    -------    -------    -------    -------
    Earnings before income
      taxes ......................       16,098     14,381     19,074     18,049     16,983     14,219     14,584
  Income taxes ...................        5,825      5,058      6,722      6,674      6,246      5,740      5,523
                                     ----------    -------    -------    -------    -------    -------    -------
    Net earnings .................       10,273      9,323     12,352     11,375     10,737      8,479      9,061
                                     ==========    =======    =======    =======    =======    =======    =======

PER SHARE DATA (1):
  Average common shares
    outstanding - basic...........       11,439     11,341     11,393     11,147     10,782     10,532     10,589
  Basic earnings per common
    share ........................   $     0.90       0.82       1.08       1.02       1.00       0.83       0.85
  Diluted earnings per common
    share ........................         0.89       0.81       1.06       1.00       0.98       0.82       0.84
  Dividends declared per share ...         0.44       0.40       0.58       0.42       0.36       0.29       0.19
  Period end book value ..........         8.03       8.21       7.44       7.44       6.69       5.86       5.30

SUMMARY OF FINANCIAL
CONDITION:
  Total assets ...................   $1,026,041    918,140    974,001    786,802    748,526    675,580    599,193
  Investment securities ..........      203,849    205,060    209,312    119,087    128,638    126,892    113,008
  Loans receivable, net ..........      723,026    619,614    652,208    571,188    525,982    478,868    421,812
  Total deposits .................      716,987    576,784    644,106    546,503    487,539    433,434    378,316
  Total borrowed funds ...........      206,593    245,482    235,264    144,593    178,408    169,987    151,104
  Stockholders' equity ...........       91,838     85,260     85,056     84,146     73,537     61,620     55,763

FINANCIAL RATIOS:
  Return on:
    Average assets(2) ............         1.37%      1.60%      1.42%      1.47%      1.50%      1.41%      1.50%
    Average stockholders'
      equity(2) ..................        15.82%     14.46%     14.55%     14.42%     16.06%     13.76%     16.25%
  Equity as a percentage of
    total assets .................         8.95%      9.29%      8.73%     10.69%      9.82%      9.12%      9.31%
  Dividend payout ratio ..........        48.89%     48.78%     53.78%     44.07%     36.36%     35.16%     22.58%
  Efficiency ratio(3) ............        56.79%     57.50%     58.32%     57.87%     56.80%     60.18%     55.44%
  Net loans to total assets ......        70.47%     67.49%     66.96%     72.60%     70.27%     70.88%     70.40%
  Net interest margin on
    average earning assets (tax
    equivalent)(2) ...............         4.50%      4.70%      4.67%      4.80%      4.74%      4.75%      4.96%

  Nonperforming assets to total
    assets(4) ....................         0.18%      0.28%      0.23%      0.39%      0.27%      0.28%      0.18%
  Allowance for loan losses to
    total loans ..................         1.08%      1.04%      1.02%      0.98%      0.88%      0.85%      0.89%
  Allowance for loan losses to
    nonperforming assets .........          418%       250%       295%       185%       229%       215%       348%
</TABLE>

(1) Revised for stock splits and dividends.
(2) The ratios for the nine months ended September 30, 1999 and September 30,
    2000 have been annualized and are not necessarily indicative of results for
    the entire year.
(3) Efficiency ratio is the ratio of non-interest expense to the sum of net
    interest income and non-interest income.
(4) Non-performing assets consist of (i) non-accrual loans, (ii) loans
    delinquent more than 90 days, and (iii) other real estate owned (OREO).

                                       12
<PAGE>   20

WESTERFED FINANCIAL CORPORATION

        The following table presents unaudited information concerning certain
financial information and ratios for WesterFed Financial Corporation. Dollar
amounts are in thousands, except per share data. Effective December 31, 1999,
WesterFed changed its fiscal year-end from June 30 to December 31.

<TABLE>
<CAPTION>
                                                                  As of and
                                              As of and for the    for the
                                              Nine Months Ended   Six Months                      As of and for the
                                                September 30,       Ended                    Fiscal Years Ended June 30,
                                             -------------------  December 31, ---------------------------------------------------
                                               2000       1999      1999         1999       1998      1997(1)     1996      1995
                                             --------  ---------  -----------  ---------  ---------   -------   --------  --------
<S>                                          <C>       <C>        <C>          <C>        <C>         <C>         <C>       <C>
SUMMARY OF OPERATIONS:
  Interest income .......................... $ 53,130     52,295      35,606      70,798     74,524    51,260     42,544     37,783
  Interest expense .........................   30,346     28,465      19,385      39,244     42,286    28,407     24,737     20,984
                                             --------  ---------   ---------   ---------  ---------   -------   --------  ---------
    Net interest income ....................   22,784     29,830      16,221      31,554     32,238    22,853     17,807     16,799
  Provision for loan losses ................    1,950      1,235         880       1,300        840       400          0          0
                                             --------  ---------   ---------   ---------  ---------   -------   --------  ---------
    Net interest income after
      provision for loan losses ............   21,434     22,595      15,341      30,264     31,398    22,453     17,807     16,788
  Non-interest income ......................    7,668      6,535       4,127       9,298      8,381     4,685      3,312      2,870
  Non-interest expense .....................   18,603     20,566      13,010      28,226     27,759    20,568     14,004     12,868
                                             --------  ---------   ---------   ---------  ---------   -------   --------  ---------
    Earnings before income taxes ...........   10,499      8,564       6,458      11,326     12,020     6,570      7,115      6,601
  Income taxes .............................    4,038      3,216       2,483       4,403      4,760     2,069      2,656      2,473
                                             --------  ---------   ---------   ---------  ---------   -------   --------  ---------
    Net earnings ...........................    6,461      5,348       3,975       6,923      7,260     4,507      4,558      4,128
                                             ========  =========   =========   =========  =========   =======   ========  =========
PER SHARE DATA:
  Average common shares outstanding - basic.    3,959      4,334       4,291       4,830      5,318     4,458      4,259      4,513
  Basic earnings per common share .......... $   1.63       1.23        0.93        1.43       1.37      1.01       1.07       0.96
  Diluted earnings per common share ........     1.59       1.18        0.89        1.37       1.29      0.96       1.07       0.96
  Dividends declared per share .............     0.51       0.50        0.32        0.62       0.54      0.45       0.36       0.30
  Period end book value ....................    22.36      20.41       20.57       20.08      19.84     18.74      17.88      17.09

SUMMARY OF FINANCIAL CONDITION:
  Total assets ............................. $933,009  1,014,049   1,000,885   1,007,349  1,022,136   955,639    563,931    563,285
  Investment securities ....................  243,855    306,767     303,693     291,020    261,784   248,054    169,055    226,200
  Loans receivable, net ....................  621,951    629,823     620,751     631,371    867,293   630,277    368,193    313,121
  Total deposits ...........................  602,913    842,994     658,404     645,549    656,441   630,869    350,212    344,155
  Total borrowed funds .....................  212,513    257,491     234,809     251,185    255,188   199,236    125,838    134,704
  Stockholders' equity .....................   91,991     90,423      89,525      91,149    109,700   104,259     78,607     75,146

FINANCIAL RATIOS:
  Return on:
    Average assets(2) ......................     0.89%      0.72%       0.79%       0.70%      0.72%     0.65%      0.79%      0.76%
    Average stockholders' equity(2) ........     9.71       7.79        8.75        6.93       6.73      5.15       5.90       5.54
  Equity as a percentage
    of total assets ........................     9.86       8.92        6.94        9.05      10.73     10.91      13.94      13.34
  Dividend payout ratio ....................    31.29      40.65       34.41       43.36      39.42     44.55      33.64      31.25
  Efficiency ratio(3) ......................    61.09      67.73       63.94       69.09      68.34     74.69      66.31      66.09
  Net loans to total assets ................    66.66      82.11       62.02       62.67      64.31     65.95      62.29      55.59
  Net interest margin on average
    earning assets (tax equivalent)(2) .....     3.35       3.43        3.50        3.46       3.46      3.53       3.23       3.23
  Nonperforming assets to total assets .....     0.32       0.41        0.31        0.42       0.49      0.25       0.13       0.10
  Allowance for loan losses to total loans..     0.99       0.83        0.82        0.80       0.74      0.73       0.54       0.64
  Allowance for loan losses
    to nonperforming assets ................      206        129         165         121         97       191        280        350
</TABLE>

(1) Includes assets and liabilities from the Security Bancorp acquisition for
    only four months of fiscal 1997.

(2) The ratios for the nine months ended September 30, 2000 and 1999 have been
    annualized and are not necessarily indicative of results for the entire
    year.

(3) Efficiency ratio is the ratio on non-interest expense to the sum of net
    interest income and non-interest income.







                                       13
<PAGE>   21


                                  RISK FACTORS

        In evaluating the merger and the merger agreement, stockholders should
take into account the following risks, as well as other information included in
or incorporated by reference into this document:

RISKS RELATED TO THE MERGER

THE MERGER CONSIDERATION IS NOT FIXED AND MAY FLUCTUATE OVER TIME.

        The value of the merger consideration will not be determined until the
fifteenth trading day preceding the date the merger is completed. Accordingly,
the value of the merger consideration will be determined at a later date.
Moreover, the value of the Glacier stock to be received in the merger is subject
to fluctuation after the date the merger consideration is determined due to
subsequent changes in the market price of Glacier common stock. On September 19,
2000, the last full trading day prior to the public announcement of the
execution of the merger agreement, Glacier's common stock closed at $12.81. On
_____________, 2000, the most recent date for which it was practicable to obtain
market price data prior to the printing of this document, Glacier's stock closed
at $________. The market price of Glacier common stock at and after the date the
merger consideration is determined and the date the merger is completed may be
substantially higher or lower than recent prices. You are advised to obtain
current market quotations for Glacier stock.

WESTERFED'S STOCKHOLDERS MAY RECEIVE MERGER CONSIDERATION WITH A CALCULATED
VALUE OF LESS THAN $19.94 PER SHARE.

        If the average per share closing price of Glacier stock for the twenty
trading days ending on the fifteenth trading day immediately preceding the date
the merger is completed is less than $9.00, this will cause the calculated
merger consideration per share to be less than $19.94. In such event, the
WesterFed board may elect to terminate the merger subject to the right of the
Glacier board to increase the calculated merger consideration to $19.94 as of
the determination date. Rather than taking the risk of a termination of the
merger, the WesterFed board may elect to proceed with the merger at a lower
price if it concludes that such action is in the best interest of its
stockholders and that the merger consideration at the lower price remains fair
to its stockholders from a financial point of view. No additional stockholder
approval is required for the WesterFed board to take this action. By adopting
the merger agreement, the WesterFed stockholders will vest the WesterFed board
with the power to make this decision. If the average per share closing price of
Glacier common stock for the twenty trading days ending on the fifteenth trading
day immediately preceding the date the merger is completed is less than $7.50,
this would cause the calculated merger consideration per share to be less than
$18.29, and in such circumstance, the WesterFed board would not have the power
to cause the merger to be completed without the consent of the Glacier board.

WESTERFED STOCKHOLDERS MAY NOT RECEIVE MERGER CONSIDERATION THAT IS CONSISTENT
WITH THEIR ELECTIONS.

        WesterFed stockholders can elect to receive cash, shares of Glacier
stock, or a combination of both, for their WesterFed shares. However, after all
the elections have been made, the elections will be adjusted to ensure that the
portion of the total merger consideration to be paid in cash is not more than
$41.3 million, and is not more than 55% of the value of the aggregate merger
consideration based upon the closing price of Glacier stock on the date the
merger is completed, and that the maximum number of WesterFed shares that can be
exchanged for Glacier stock will not exceed 1.1 times the total number of
WesterFed shares issued and outstanding immediately prior to the completion of
the merger divided by the final exchange ratio. The adjustments will be made on
a pro rata basis. Because of the possible

                                       14
<PAGE>   22

adjustments to the elections, WesterFed stockholders may receive stock and/or
cash in amounts that are not consistent with their elections.

WESTERFED'S STOCKHOLDERS WILL NOT CONTROL GLACIER'S FUTURE OPERATIONS.

        WesterFed's stockholders collectively own 100% of WesterFed and, in the
aggregate, have the absolute power to approve or reject any matters requiring
the adoption or approval of stockholders under Delaware law and WesterFed's
certificate of incorporation. In the merger it is expected that WesterFed's
stockholders in the aggregate will become the owners of less than 33% of the
outstanding shares of Glacier stock. Accordingly, even if all of the former
WesterFed stockholders voted in concert on all matters presented to Glacier's
stockholders from time to time, the former WesterFed stockholders may not have a
significant impact on whether future Glacier proposals are approved or rejected.

GLACIER MAY EXPERIENCE GREATER THAN EXPECTED DIFFICULTIES IN OPERATING
WESTERFED'S BUSINESSES.

        The merger involves the combination of two companies that have
previously operated independently. Glacier expects to realize increased
revenues, together with other financial and operating benefits from the merger,
but there can be no assurance as to when, or the extent to which, the combined
company will be able to realize these benefits. Glacier may experience greater
than expected difficulties in operating WesterFed, which could have an adverse
effect on Glacier's ability to realize the expected benefits of the merger.

        There are many things that could go wrong and adversely affect the
business and profitability of the combined company. We cannot predict the full
range of post-merger problems that may occur. Some possible difficulties
include:

        -       the failure of Glacier to effectively integrate the businesses
                and operations of WesterFed;

        -       the failure to retain key personnel of WesterFed;

        -       increased competition from competitors for WesterFed's
                customers; and

        -       risks associated with unanticipated events or liabilities.

GLACIER WILL ACQUIRE ADDITIONAL BRANCHES IN ANOTHER TRANSACTION, WHICH MAY BE
DIFFICULT TO INTEGRATE IN THE SHORT TO MID-TERM FUTURE.

        As described under "BUSINESSES OF THE PARTIES TO THE MERGER -
Information Concerning Glacier - Proposed Glacier Branch Acquisition," Glacier
has entered into agreements to purchase a total of seven additional branches of
Wells Fargo & Company and First Security Corporation subsidiary banks located in
Idaho and Utah. These branches will be acquired through Mountain West Bank, a
Glacier subsidiary. The branches will operate as Mountain West Bank branches
following the acquisitions, which are expected to be completed as early as March
2001.

        The branch acquisitions will increase the total number of Glacier bank
branches from 30 to 37, and will increase the total deposits of the Glacier
banks by approximately $188 million. Two of the branches to be acquired are
located in Utah, a market where Glacier has no previous experience.

        The successful integration of the branches into Glacier's business will
present challenges, particularly in light of the fact that Glacier will also be
integrating the business of WesterFed, as

                                       15
<PAGE>   23

described immediately above, at approximately the same time. Glacier may
experience greater than expected difficulties in integrating and operating the
new branches, and any such difficulties will be compounded by Glacier's
simultaneous integration of the business conducted by WesterFed, following
completion of the merger. Management resources (of both Glacier and Mountain
West Bank, which will operate the new branches) could be strained, and there can
be no assurance that Glacier will be able to effectively integrate the
operations of the new branches. Unanticipated difficulties could have an adverse
effect on Glacier's ability to realize the expected benefits of both the merger
and the acquisition of the branches.

THE MERGER WILL, AND FUTURE ACQUISITIONS BY GLACIER MAY, DILUTE YOUR OWNERSHIP
OF GLACIER AND MAY CAUSE GLACIER TO BECOME MORE SUSCEPTIBLE TO ADVERSE ECONOMIC
EVENTS.

        The merger is material to Glacier. Glacier will issue a substantial
number of shares of its stock and use significant cash resources to effect the
merger. This will result in a dilution of ownership to existing Glacier
stockholders, a reduction in Glacier's cash liquidity and possibly limitations
on Glacier's ability to effect financings in the future. Future business
acquisitions could also be material to Glacier and result in the same
consequences described above.

CHANGES IN INTEREST RATES COULD HAVE AN ADVERSE EFFECT ON GLACIER'S
PROFITABILITY.

        Glacier's ability to make a profit, like that of most financial
institutions, substantially depends upon its net interest income, which is the
difference between the interest income it earns on its interest-earning assets,
such as loans, and the interest expense it pays on its interest-bearing
liabilities, such as deposits. Certain assets and liabilities, however, may
react in different degrees to changes in market interest rates. Further,
interest rates on some types of assets and liabilities may fluctuate prior to
changes in broader market interest rates, while rates on other types may lag
behind. Additionally, some of Glacier's assets, such as adjustable rate
mortgages, have features, including payment and rate caps, which restrict
changes in their interest rates. As a result, Glacier's net interest margin
would be adversely impacted by a rise in interest rates where actual rates on
adjustable rate loans do not rise as rapidly as its cost of funds.

        Factors such as inflation, recession, unemployment, money supply,
international disorders, instability in domestic and foreign financial markets,
and other factors beyond Glacier's control may affect interest rates. Changes in
market interest rates will also affect the level of voluntary prepayments on
Glacier's loans and payments on its mortgage-backed securities resulting in the
receipt of proceeds that may be reinvested at a lower rate than the loan or
mortgage-backed security being prepaid. Although Glacier pursues an
asset-liability management strategy designed to control its risk from changes in
market interest rates, changes in interest rates could still have an adverse
effect on Glacier's profitability.

IF GLACIER DOES NOT ADJUST TO RAPID CHANGES IN THE FINANCIAL SERVICES INDUSTRY,
ITS FINANCIAL PERFORMANCE MAY SUFFER.

        Glacier's ability to maintain its history of strong financial
performance and return on investment to stockholders will depend in part on
Glacier's ability to expand its scope of available financial services as needed
to meet the requirements and demands of its customers. In addition to the
challenge of attracting and retaining customers for traditional banking
services, Glacier's competitors now include securities dealers, brokers,
mortgage bankers, investment advisors and finance and insurance companies who
seek to offer one-stop financial services to their customers that may include
services that banks have not been able or allowed to offer to their customers in
the past. The increasingly competitive

                                       16
<PAGE>   24

environment is a result primarily of changes in regulation, changes in
technology and product delivery systems and the accelerating pace of
consolidation among financial service providers.

CHANGES IN THE REGULATORY STRUCTURE OR THE STATUTES OR REGULATIONS APPLICABLE TO
GLACIER COULD HAVE A MATERIAL IMPACT ON ITS OPERATIONS.

        Glacier and its subsidiaries are subject to extensive regulation,
supervision and examination by the Federal Reserve Board, state banking
authorities, and the Federal Deposit Insurance Corporation, which insures the
deposits of Glacier's bank subsidiaries up to applicable limits. Regulatory
authorities have extensive discretion in carrying out their supervisory and
enforcement responsibilities, and regulations have been implemented which have
increased capital requirements, increased insurance premiums and resulted in
increased administrative, professional and compensation expenses. Any change in
the regulatory structure or the applicable statutes or regulations could have a
material impact on Glacier's operations. Additional legislation and regulations
may be enacted or adopted in the future which could significantly affect
Glacier's powers, authority and operations, and its competitors which, in turn,
could have a material adverse effect on its operations.

                           FORWARD-LOOKING STATEMENTS

        This document, including information incorporated by reference into this
document, contains or may contain forward-looking statements about Glacier,
WesterFed and the combined company which we believe are within the meaning of
the Private Securities Litigation Reform Act of 1995. This document contains
certain forward-looking statements with respect to the financial condition,
results of operations, plans, objectives, future performance and business of
Glacier, including statements preceded by, followed by or that include the words
"believes," "expects," "anticipates" or similar expressions. 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 include, among others, those risks discussed above.
Further information on other factors which could affect the financial results of
Glacier and WesterFed before the merger and Glacier after the merger are
included in the SEC filings incorporated by reference into this document.
See "WHERE YOU CAN FIND MORE INFORMATION."


                                       17
<PAGE>   25

                      GLACIER SPECIAL STOCKHOLDERS MEETING

DATE, TIME, PLACE AND PURPOSE

        The Glacier special stockholders meeting will be held on
_______________, 2001 at 9:00 a.m. local time, at The Outlaw Inn, 1701 Highway
93 South, Kalispell, Montana. The purposes of the Glacier special meeting are:
(i) to consider and vote upon the adoption of the merger agreement and (ii) to
act upon other matters, if any, that may properly come before the meeting.

RECORD DATE; SHARES OUTSTANDING AND ENTITLED TO VOTE

        The Glacier board of directors has fixed 5:00 p.m. on _____________,
2000 as the Glacier record date for determining the holders of shares of Glacier
stock entitled to notice of and to vote at the Glacier special meeting. At the
close of business on the Glacier record date, there were __________ shares of
Glacier stock issued and outstanding held by approximately ____ holders of
record. Holders of record of Glacier stock on the Glacier record date are
entitled to one vote per share.

VOTE REQUIRED

        At least a majority of all shares of Glacier stock outstanding on the
Glacier record date must vote in favor of the merger agreement in order for it
to be adopted. A majority of the shares of Glacier stock outstanding at the
record date must be present in person or by proxy to constitute a quorum of
stockholders for the Glacier special meeting. For this purpose, proxies from
stockholders who have abstained and broker non-votes (i.e. proxies from brokers
or nominees indicating that such person has not received instructions from the
beneficial owners of, or other persons entitled to vote, such shares) are
counted in determining the shares present at a meeting. For voting purposes,
neither abstentions nor broker non-votes, will be counted as favorable votes in
determining whether the merger agreement is adopted by the holders of Glacier
stock. As a consequence, abstentions and broker non-votes will have the same
effect as votes against adoption of the merger agreement.

        As of the Glacier record date, directors and executive officers of
Glacier, and their affiliates, owned and were entitled to vote _________ shares
at the Glacier special meeting, representing approximately ____% of the
outstanding shares of Glacier stock. Each director and executive officer of
Glacier has either agreed or intends to vote all outstanding shares of Glacier
stock held or controlled by him or her (a total of __________ shares or
approximately ____% of the shares outstanding) in favor of adoption of the
merger agreement. See "THE MERGER - Voting Agreements."

VOTING, SOLICITATION, AND REVOCATION OF PROXIES

        All Glacier shares represented by valid proxies received and not revoked
before they are exercised will be voted in the manner specified in the proxies.
If no specification is given, the persons named in the proxy will vote the
shares represented by the proxy FOR the adoption of the merger agreement, and in
the proxy's discretion, on any other matter coming before the meeting, unless
otherwise directed by the proxy.

        Proxies for the Glacier special meeting are being solicited on behalf of
the Glacier board of directors. Glacier will bear the cost of soliciting proxies
from its stockholders. In addition to solicitation by mail, proxies may be
solicited in person or by telephone by officers or employees of Glacier. Banks,
brokerage houses, other institutions, nominees, and fiduciaries will be
requested to forward their proxy soliciting material to their principals and
obtain authorization for the execution of the proxies. Glacier may in its
discretion engage and pay an independent firm to assist it in soliciting
proxies. Glacier will also, upon

                                       18
<PAGE>   26

request, pay the standard charges and expenses of banks, brokerage houses, other
institutions, nominees, and fiduciaries for forwarding proxy materials to and
obtaining proxies from their principals.

        Any proxy given by a stockholder may be revoked before its exercise by
written notice to the Secretary of Glacier, or by a properly submitted
subsequently dated proxy, or in open meeting at the special stockholders meeting
before the stockholder vote is taken. Simply attending the special stockholders
meeting, without informing Glacier that you desire to vote in person, will not
revoke a previously submitted proxy.

        GLACIER STOCKHOLDERS ARE REQUESTED TO COMPLETE, DATE AND SIGN THE
ACCOMPANYING PROXY AND RETURN IT PROMPTLY IN THE ENCLOSED POSTAGE-PAID ENVELOPE.

                     WESTERFED SPECIAL STOCKHOLDERS MEETING

        This document and the accompanying proxy form are being furnished to you
in connection with the solicitation by the board of directors of WesterFed of
proxies to be used at the special meeting to be held at 9:00 a.m., local time,
on _________________, 2001, at 2601 Garfield Street, Missoula, Montana, and at
any adjournments or postponements thereof. This document, the enclosed notice of
WesterFed's special meeting and proxy form are first being sent to you on or
about _______________, 2000.

PURPOSE OF THE MEETING

        The purpose of the special meeting of WesterFed's stockholders is to
adopt the merger agreement relating to the merger of WesterFed with and into
Glacier and other transactions contemplated thereby. WesterFed stockholders also
may consider and vote upon such other matters as are properly brought before the
special meeting, including a proposal to adjourn the special meeting to permit
further solicitation of proxies by the WesterFed board in the event that there
are not sufficient votes to adopt the merger agreement at the time of the
special meeting. However, no proxy which is voted against the adoption of the
merger agreement will be voted in favor of adjournment to solicit further
proxies for such proposal. As of the date of this document, the WesterFed board
knows of no business that will be presented for consideration at the special
meeting, other than matters described in this document.

VOTING AND REVOCABILITY OF PROXIES

        The WesterFed board of directors has fixed the close of business on
_____________, 2000 as the record date for stockholders entitled to notice of
and to vote at the special meeting. Only holders of record of WesterFed common
stock on that record date are entitled to notice of and to vote at the special
meeting. Each share of WesterFed common stock that you own entitles you to one
vote. On the record date, _____ shares of WesterFed common stock were
outstanding and entitled to vote at the special meeting, held by approximately
_______ stockholders of record.

        Proxies solicited by the WesterFed board will be voted in accordance
with the directions given on the proxy forms. If you are the record holder of
your shares and you sign and date your proxy but do not indicate your vote on
the proxy, your proxy will be voted to adopt the merger agreement at the special
meeting. The proxies confer discretionary authority on the persons named on the
proxy forms to vote WesterFed common stock with respect to matters incident to
the conduct of the special meeting. If any other business is presented at the
special meeting, proxies will be voted in accordance with the discretion of the
proxy holders. Proxies marked as abstentions will have the same effect as a vote
against the merger agreement at the special meeting. If you do not return your
proxy or otherwise vote at the

                                       19
<PAGE>   27

special meeting, it will have the same effect as if you voted against the merger
agreement at the special meeting.

        If you hold your shares in "street name" with a broker, you must
instruct your broker to vote your shares by following the directions provided to
you by your broker. Your broker may not vote your shares on the merger agreement
without instructions from you. Your failure to instruct your broker to vote on
the adoption of the merger agreement will result in a broker non-vote, which
will be the equivalent of voting against the merger agreement.

        Each participant in the WesterFed Employee Stock Ownership Plan may
instruct the trustee of the plan how to vote the shares allocated to his or her
account under the plan. If a participant properly executes the voting
instruction form distributed by the trustee, the trustee will vote such plan
participant's shares in accordance with the participant's instructions. Where
properly executed voting instruction forms are returned to the trustee with no
specific instruction as how to vote at the special meeting, or as to shares for
which the trustee receive no timely voting instructions, the trustee is entitled
to vote such shares in its discretion. The plan provides that shares of
WesterFed stock held in the plan but not allocated to any participant's account
are to be voted in the same proportion as directed by the plan participants who
directed the trustee as to the manner of voting their allocated shares with
respect to the adoption of the merger agreement.

        Stockholders who execute proxies retain the right to revoke them at any
time prior to the time they are voted. Unless revoked, the shares represented by
proxies will be voted at the special meeting and all adjournments thereof.
Proxies may be revoked by: (1) written notice to the Secretary of WesterFed
Financial Corporation, 110 East Broadway, Missoula, Montana, 59802, (2) filing a
later dated proxy prior to a vote being taken on a particular proposal at the
special meeting, or (3) attending the special meeting and voting in person.

VOTE REQUIRED

        One-third of the shares of WesterFed common stock outstanding on the
WesterFed record date must be present in person or by proxy to constitute a
quorum of stockholders for the WesterFed special meeting. The affirmative vote
of the holders of a majority of the WesterFed common stock outstanding is
required to adopt the merger agreement. Because adoption of the merger agreement
requires the affirmative vote of the holders of a majority of the WesterFed
common stock outstanding, abstentions and failures to vote will have the same
effect as votes against the merger agreement. Without your voting instructions,
a broker non-vote will occur. Broker non-votes have the same effect as votes
against the merger agreement.

        As of the WesterFed record date, directors and executive officers of
WesterFed, and their affiliates, owned and were entitled to vote ______ shares
of WesterFed stock, representing approximately ___% of the outstanding shares of
WesterFed stock. Each director and executive officer of WesterFed has either
agreed or intends to vote all outstanding shares of WesterFed stock held or
controlled by him or her (a total of _________ shares or approximately ___% of
the shares outstanding), in favor of adoption of the merger agreement. See "THE
MERGER - Voting Agreements."

        THE WESTERFED BOARD UNANIMOUSLY RECOMMENDS THAT THE WESTERFED
STOCKHOLDERS VOTE "FOR" THE ADOPTION OF THE MERGER AGREEMENT.

                                       20
<PAGE>   28

SOLICITATION OF PROXIES

        WesterFed will pay all the costs of soliciting proxies, and its
proportionate share of the expenses of printing and mailing this document.
WesterFed will reimburse brokerage firms and other custodians, nominees and
fiduciaries for reasonable expenses incurred by them in sending proxy materials
to the beneficial owners of common stock. In addition to solicitations by mail,
directors, officers and employees of WesterFed may solicit proxies personally or
by telephone without additional compensation. Also, WesterFed has engaged
_________ to assist WesterFed in distributing proxy materials and contacting
WesterFed stockholders. WesterFed has agreed to pay ________ $______ plus
out-of-pocket expenses not to exceed $________ for its services to be rendered
on behalf of WesterFed.

        WESTERFED'S STOCKHOLDERS ARE REQUESTED TO COMPLETE, DATE AND SIGN THE
ACCOMPANYING PROXY AND RETURN IT PROMPTLY IN THE ENCLOSED POSTAGE-PAID ENVELOPE.
DO NOT SEND ANY STOCK CERTIFICATES WITH YOUR PROXY.

                    BACKGROUND OF AND REASONS FOR THE MERGER

BACKGROUND OF THE MERGER

        WesterFed is the holding company for the largest savings bank in
Montana, Western Security Bank, and serves fourteen Montana communities through
twenty-seven offices. Over the past several years, WesterFed has embarked on a
strategy to transform itself from a thrift institution into a commercial banking
franchise, recognizing that commercial banks are more highly valued in the
marketplace. The transformation involves changing the culture, hiring personnel
with banking experience and introducing new products and services, among other
things. The difficulty of completing such a transformation was becoming evident.
The stockholder base remained unconvinced as WesterFed's stock price traded
below comparable Northwest thrift and banking institutions.

        In April 2000, Ralph Holliday, WesterFed's Chief Executive Officer,
received a phone call from Mick Blodnick, Glacier's Chief Executive Officer, to
discuss the possibility of a combination of Glacier and WesterFed. As a result,
Mr. Holliday engaged in informal discussions with several members of the
WesterFed board to seek their views on the matter. The informal consensus was
that further exploration of a possible combination was appropriate and that it
should be more formally discussed at the next board meeting.

        Subsequent to Mr. Holliday's and Mr. Blodnick's initial conversation,
WesterFed notified Putnam Lovell that they had been contacted by Glacier. On
April 27, 2000, at Holliday's request, Putnam Lovell gave a presentation to
WesterFed's board that included a review of the current bank financial
institution merger and acquisition market, a valuation analysis and an analysis
of several strategic options available to WesterFed, including purchasing
another entity, an internal growth strategy, and selling WesterFed. Putnam
Lovell also analyzed a potential business combination with Glacier. At the end
of the board meeting, the directors authorized Mr. Holliday to continue
discussions with Glacier. Several issues led the board to its decision to
continue discussions with Glacier. These issues included WesterFed's weak
trading performance, low returns on equity, delayed cost savings from its
transition from a thrift to a commercial bank, and an increased level of
competition from community banks.

        In mid May 2000, WesterFed's management met with Glacier's management to
discuss potential synergies and other strategic considerations. At approximately
that time, Glacier provided WesterFed with an initial potential bid. WesterFed
retained Putnam Lovell as its exclusive financial advisor on May 22, 2000.

                                       21
<PAGE>   29

        In mid June 2000, after meeting with WesterFed's management and revising
potential synergies, Glacier revised its bid upward. WesterFed felt that the bid
was too low and at that point negotiations were suspended indefinitely.

        In early August 2000, Glacier resurfaced with a written indication of
interest in the form of a term sheet. The pricing had been revised upward and
Mr. Holliday thought it was appropriate to have Putnam Lovell and the WesterFed
board evaluate the offer. On August 21, 2000, Putnam Lovell presented an
analysis of the offer to the WesterFed board and a further review of its
strategic alternatives. After evaluating its fiduciary duties to WesterFed's
stockholders, the board instructed Putnam Lovell to (a) contract a group of
other logical potential acquirors to determine whether they had an interest in
acquiring WesterFed and (b) continue discussions with Glacier on behalf of
WesterFed to improve both the per share purchase price and price protections.
Putnam Lovell contacted 5 other potential acquirors but did not receive a formal
indication of interest from any of them.

        In late August 2000 and early September 2000, WesterFed and Glacier
conducted due diligence. Soon after the completion of due diligence, Glacier
presented WesterFed with its final bid which included both improvement in
pricing and price protection.

        On September 20, 2000, the WesterFed board held a meeting, at which
WesterFed's directors discussed the proposed merger and merger agreement in
detail with WesterFed's management, outside counsel and its financial advisor,
including the consideration to be paid by Glacier and the related transaction
structure. WesterFed's counsel reviewed the terms of the merger agreement in
great detail and Putnam Lovell delivered its oral opinion that the consideration
to be received was fair to WesterFed's stockholders, as of that date. Putnam
Lovell's oral opinion was subsequently confirmed in writing as of such date. At
the meeting, the WesterFed board approved the merger agreement and the
transactions contemplated by the merger agreement as in the best interests of
WesterFed and its stockholders. The WesterFed board also authorized WesterFed's
management to finalize the terms of the merger agreement.

        Following the September 20, 2000 WesterFed board meeting and after the
close of the market, the parties signed the merger agreement and issued a joint
press release publicly announcing the merger.

REASONS FOR THE MERGER - GLACIER

        At its meeting on September 20, 2000, the Glacier board of directors
approved the merger agreement. In reaching its decision to approve the merger
agreement and the transaction contemplated by the merger agreement and to
recommend that Glacier's stockholders vote "FOR" adoption of the merger
agreement, the Glacier board of directors consulted with senior management and
Glacier's financial and legal advisors and considered a number of factors with
respect to the merger. The material factors considered are summarized below.

        -       The consistency of the merger with Glacier's established
                strategic and financial goals.

                -       The strategic goals included:

                        -       strengthening Glacier's position in key markets
                                throughout Montana where it historically has had
                                a significant presence, and

                        -       expanding Glacier's presence into the best
                                markets throughout Montana where it has had only
                                limited or no operations.

                                       22
<PAGE>   30
-       The financial goals included:

        -       achieving a 15 -20% return on equity on a yearly basis

        -       maintaining double digit growth of cash earnings per share on a
                yearly basis

        -     maintaining a lower than peer group average efficiency ratio, and

        -     generating a net increase in assets and deposits.

        The Glacier board of directors determined that the merger was fully
consistent with these goals. In making this determination, the Glacier board of
directors also considered the following:

        -       WesterFed is Montana's largest savings bank, and by combining
                WesterFed into the Glacier family of banks, it creates, based
                upon asset size and deposits, the largest publicly traded bank
                holding company in Montana and in the Inland Northwest;

        -       WesterFed has significant operations in cities where Glacier has
                only minimal or no presence;

        -       over the last eighteen months, WesterFed has hired a new Chief
                Executive Officer who has been charged with accelerating the
                company's transition to a commercial lending organization;

        -       the merger is expected to be accretive to cash and stated
                earnings per share for Glacier in 2001;

        -       the prices paid in recent comparable transactions;

        -       the cost of establishing de novo branches;

        -       certain senior management of WesterFed will be retained
                following the merger, and key employees of WesterFed are
                expected to remain in their positions;

        -       the merger will require approval by Glacier's stockholders and
                various regulatory bodies;

        -       the merger complements Glacier's announced acquisition of the
                seven Wells Fargo and First Security branches in Idaho and Utah;
                and

        -       the analyses, presentations and opinion of Davidson, Glacier's
                financial advisor, to the effect that the consideration to be
                paid by Glacier in the merger is fair to the stockholders of
                Glacier from a financial point of view.

        In view of the wide variety of factors considered by the board of
directors in connection with its evaluation of the merger, the board of
directors did not consider it practical to, and did not attempt to, quantify,
rank or otherwise assign relative or specific weights to the specific factors
described above, and individual members of the board of directors may have given
different weights to different factors.

                                       23
<PAGE>   31

RECOMMENDATION FOR THE GLACIER BOARD OF DIRECTORS

        FOR THE REASONS SET FORTH ABOVE, THE GLACIER BOARD OF DIRECTORS HAS
UNANIMOUSLY APPROVED THE MERGER AGREEMENT AS ADVISABLE AND IN THE BEST INTERESTS
OF GLACIER AND GLACIER'S STOCKHOLDERS AND RECOMMENDS THAT THE GLACIER
STOCKHOLDERS VOTE FOR THE ADOPTION OF THE MERGER AGREEMENT.

OPINION OF GLACIER'S FINANCIAL ADVISOR

        Glacier's board has retained Davidson as its exclusive financial advisor
in connection with this transaction. Davidson agreed to assist Glacier in
analyzing, structuring, negotiating and effecting a transaction with WesterFed.
Glacier's board requested that Davidson provide to Glacier's board a fairness
opinion relating to the merger consideration in connection with the merger.

        Davidson, as part of its investment banking business, is engaged in the
valuation of banking and other businesses and their securities in connection
with mergers and acquisitions, negotiated underwritings, competitive biddings,
secondary distributions of listed and unlisted securities, private placements
and valuations for estate, corporate and other purposes. The Glacier board of
directors retained Davidson based upon its experience as a financial advisor in
mergers and acquisitions of financial institutions and its knowledge of
financial institutions. Glacier has retained Davidson in the past for other
investment banking assignments. Davidson makes a market in the common stocks of
both Glacier and WesterFed and publishes a research recommendation on each
company.

        On September 20, 2000, a representative of Davidson attended the Glacier
board of directors' meeting at which the Glacier board considered and approved
the merger agreement. The representative presented to the board Davidson's
written fairness opinion that as of the date of the meeting, the merger
consideration to be paid pursuant to the merger agreement is fair from a
financial point of view to the holders of Glacier common stock. That opinion was
reconfirmed in writing as of the date of this prospectus/joint proxy statement.
The full text of Davidson's opinion, including review procedures, valuation
methods and assumptions and results of their analyses, is attached as APPENDIX D
to this document.

        Davidson's opinion is directed to the Glacier board of directors and
addresses only the merger consideration specified in the merger agreement. It
does not address the underlying business decision to proceed with the merger and
does not constitute a recommendation to any stockholder as to how the
stockholder should vote at the special meeting with respect to the adoption of
the merger agreement or any other matter related thereto.

        REVIEW PROCEDURES. In connection with providing this opinion, Davidson
reviewed, among other things:

        -       the merger agreement;

        -       annual reports to stockholders and annual reports on Form 10-K
                of Glacier;

        -       annual reports to stockholders and annual reports on Form 10-K
                of WesterFed;

        -       quarterly reports on Form 10-Q of Glacier;

        -       quarterly reports on Form 10-Q of WesterFed;

                                       24
<PAGE>   32

        -       certain internal financial statements and other non-publicly
                available financial and operating data of Glacier and WesterFed
                provided to it by the managements of Glacier and WesterFed;

        -       discussions about the past and current operations, financial
                condition, regulatory relationships and future prospects of
                Glacier and WesterFed with their executive managements;

        -       the relative contributions of assets, liabilities, income and
                expenses to the combined company by Glacier and WesterFed in the
                merger;

        -       the pro forma results that the combined company could produce
                through the end of 2002 based upon forecasts prepared by
                managements of Glacier and WesterFed;

        -       the financial terms of certain recent business combinations in
                the banking industry that were publicly disclosed and available
                to Davidson;

        -       certain financial and stock market information for Glacier and
                WesterFed and compared this information to similar information
                for certain other companies with publicly traded securities; and

        -       other analyses and reviews, as it deemed appropriate.

        In connection with its review, Davidson relied upon and assumed the
accuracy and completeness of all of the information listed above that was
provided to it or publicly available. Davidson does not assume any
responsibility for independent verification of the information. Davidson assumed
that the internal confidential financial projections prepared by both
managements were reasonably prepared, reflecting the best currently available
estimates and judgments of the future financial performance of the combined
company, and Davidson did not independently verify the validity of these
assumptions.

        Davidson did not make any independent evaluation or appraisal of the
assets and liabilities of Glacier or WesterFed, nor was it furnished with any
appraisals. Davidson did not examine individual loan files of Glacier or
WesterFed. Davidson is not an expert in the evaluation of loan portfolios for
the purpose of assessing the adequacy of the allowance for loan losses and
assumed that these allowances are, in the aggregate, adequate to cover the
losses.

        Davidson's opinion is predicated on the merger receiving the tax and
accounting treatment contemplated in the merger agreement.

        Davidson's opinion is necessarily based upon economic, market and other
conditions in effect on September 20, 2000 and the information made available to
Davidson as of September 20, 2000 and as reconfirmed as of the date of this
prospectus/joint proxy statement.

        No limitations were imposed on Davidson regarding the scope of its
investigation or otherwise by Glacier or WesterFed.

        VALUATION METHODS. In connection with providing its opinion, Davidson
performed a variety of financial analyses, included those summarized below. The
information provided below is not a complete description of the analyses that
Davidson used in reaching its opinion. Preparation of a fairness opinion
involves various determinations and judgments as to the most appropriate and
relevant methods of financial analysis and the application of these methods to
the particular circumstances.

                                       25
<PAGE>   33

        A fairness opinion is not readily susceptible to a partial analysis or
summary description. While Davidson provided the Glacier board with the results
of the various analyses that follow, Davidson believes that all of its analyses
must be considered as a whole and that selecting portions of the analyses and
factors considered by it, without considering all analyses and factors, or
attempting to ascribe relative weights to some or all such analyses and factors,
or including other discrete analyses or factors, could create an incomplete view
of the evaluation process underlying its opinion.

        In performing its analyses, Davidson made numerous assumptions with
respect to industry performance, general business and economic conditions and
other matters, many of which are beyond the control of Glacier, WesterFed, the
combined company and Davidson.

        The following is a summary of the analyses presented in the following
sections by Davidson to Glacier's board of directors on September 20, 2000:

        -       Comparable Company Analysis and Historical Stock Data Analysis

        -       Analysis of Relative Contributions of Parties

        -       Comparable Transaction Analysis and Exchange Ratio Analysis

        -       Discounted Cash Flow Analysis

        -       Pro Forma Merger Analysis and Accretion/Dilution Analysis

        COMPARABLE COMPANY ANALYSIS. Davidson compared the financial performance
and market performance of Glacier and WesterFed based on various financial
measures of earnings performance, operating efficiency, capital adequacy and
asset quality and various measures of market performance, including but not
limited to, price to book values, price to earnings and dividend yields to
certain selected financial institutions holding companies.

        For the purpose of such analysis, the financial information used by
Davidson is as of and for the six months ending June 30, 2000. Market price
information is as of September 18, 2000. For comparison to Glacier, Davidson
selected publicly traded banking companies in Washington, Oregon, Idaho,
Montana, Wyoming, New Mexico, Utah, Nevada, California, Colorado and Arizona
with assets between $500 million and $2 billion, and for comparison to
WesterFed, Davidson selected publicly traded thrifts in the same states with
assets between $500 million and $3 billion. Davidson excluded any bank or thrift
that is in the process of being acquired.

        Davidson's analysis showed the following concerning Glacier's financial
performance:

<TABLE>
<CAPTION>

                                                    GLACIER PERFORMANCE      AVERAGE         MEDIAN
                                                    -------------------      -------         ------
   <S>                                              <C>                     <C>             <C>
   Return on average assets                                  1.30%            1.44%          1.34%
   Return on average equity                                 15.10%           14.50%         15.00%
   Net Interest Margin                                       4.30%            5.76%          5.75%
   Efficiency Ratio                                         58.78%           59.30%         61.10%
   Ratio of total equity to total assets                     8.60%            9.50%          8.60%
   Ratio of non-performing assets to
      total loans plus other real estate owned                .23%             .66%           .54%
   Ratio of loan loss reserve to total loans                 1.05%            1.48%          1.48%
</TABLE>

                                       26
<PAGE>   34


        Davidson's analysis further showed the following concerning Glacier's
market performance:

        -       that its price to earnings per share multiple based on 2000
                projected earnings was 10.5 times, compared to an average of
                11.0 and median of 10.7;

        -       that its price to earnings per share multiple based on 2001
                projected earnings was 9.2 times, compared to an average of 9.6
                and median of 9.7;

        -       that its price to book value per share was 1.67 times, compared
                to an average of 1.63 and median of 1.50; and

        -       that its dividend yield was 4.67% compared to an average of
                1.18% and median of 0.49%.

        Davidson's analysis showed the following concerning WesterFed's
financial performance:

<TABLE>
<CAPTION>

                                                       WESTERFED PERFORMANCE     AVERAGE       MEDIAN
                                                       ---------------------     -------       ------
 <S>                                                   <C>                       <C>           <C>
 Return on average assets                                       .79%                .88%         .91%
 Return on average equity                                      8.90%              11.00%       10.60%
 Net Interest Margin                                           3.31%               3.42%        3.40%
 Efficiency Ratio                                             63.90%              57.90%       56.20%
 Ratio of total equity to total assets                         9.40%               8.10%        7.50%
 Ratio of non-performing assets to
    total loans plus other real estate owned                    .31%                .81%         .47%
 Ratio of loan loss reserve to total loans                      .93%               1.10%        1.00%
</TABLE>



        Davidson's analysis further showed the following concerning WesterFed's
market performance:

        -       that its price to earnings per share multiple based on 2000
                projected earnings was 8.4 times, compared to an average of 7.7
                and median of 7.2;

        -       that its price to earnings per share multiple based on 2001
                projected earnings was 7.9 times, compared to an average of 7.1
                and median of 6.5;

        -       that its price to book value per share was 0.72 times, compared
                to an average of 0.88 and median of 0.86; and

        -       that its dividend yield was 4.32% compared to an average of
                1.43% and median of 0.00%.

        HISTORICAL STOCK DATA ANALYSIS. Davidson reviewed weekly stock price
data for Glacier common stock and WesterFed common stock compared to the Nasdaq
Bank Index and S&P Banking Index for the period from January 1, 1999 through
September 18, 2000. This analysis showed that on a relative performance basis,
Glacier's and WesterFed's stock prices went down 32% and 13%, respectively,
compared with a reduction of 8% for the Nasdaq Bank Index and 11% for the S&P
Banking Index. During this same time frame, the Dow Jones Industrial Average and
S&P 500 Index were both up 18%.

        ANALYSIS OF RELATIVE CONTRIBUTIONS OF PARTIES. In preparing its opinion,
Davidson also reviewed the relative financial contributions of Glacier and
WesterFed to certain pro forma balance sheet and income statement items of the
combined company. The chart below shows these percentage contributions. Davidson
compared these percentage contributions to the estimated pro forma

                                       27
<PAGE>   35

ownership for WesterFed stockholders receiving Glacier stock for all or a
portion of their total consideration in the merger. Because the total merger
consideration consists of both stock and cash, the relative ownership of the
combined entity by WesterFed stockholders following the merger will be
significantly less than the percentage of WesterFed's contribution except with
respect to earnings.

         RELATIVE CONTRIBUTIONS AS OF AND FOR THE SIX MONTHS ENDED JUNE 30, 2000

<TABLE>
<CAPTION>

                                               GLACIER                   WESTERFED
                                               -------                   ---------
        <S>                                    <C>                       <C>
        Asset                                   52.0%                      48.0%
        Net Loans                               53.6%                      46.4%
        Deposits                                52.1%                      47.9%
        Stated Equity                           49.9%                      50.1%
        Net Interest Income                     56.9%                      43.1%
        Non Interest Income                     57.6%                      42.4%
        Non Interest Expense                    55.0%                      45.0%
        Earnings                                62.2%                      37.8%
</TABLE>


        Applying only the stock component of the merger consideration (and not
giving any value to the cash component of the merger consideration), Glacier
stockholders will own approximately 70% of the combined company based upon the
relative amounts of stock owned by Glacier and WesterFed stockholders following
closing of the transaction. In addition to the stock component of the merger
consideration, WesterFed stockholders will receive an amount of cash as
described elsewhere in this document. If the merger consideration was paid fully
in stock, and using the assumed exchange ratio of 1.8313 shares of Glacier
common stock for each share of WesterFed common stock, holders of Glacier's
common stock would own approximately 60.5% of the combined company based on
common shares outstanding at June 30, 2000.

        COMPARISON TO SELECTED TRANSACTIONS. Davidson reviewed certain terms and
financial characteristics of selected mergers or acquisitions of thrift
organizations in the United States which were announced in 2000 and compared the
financial terms of those transactions to the merger for comparison purposes.
Davidson assumed the merger consideration per share was $22.66 based upon a
closing price of $12.38 for Glacier stock as of September 18, 2000. The
information that it reviewed included, but was not limited to the following:

        -       size of the acquired company;

        -       total transaction value, in aggregate and on a per share basis;
                and

        -       resulting price-to-book ratios and price-to-earnings multiples

        Davidson's initial selection of a guideline group yielded forty-one
thrift deals announced in 2000 as of September 10, 2000. Within that group of
forty-one, Davidson eliminated six transactions because of a lack of financial
information or the transaction being a merger of equals. The remaining 35
transactions were used in its analysis and are summarized below.

<TABLE>
<CAPTION>

                        COMPARABLE GROUP     COMPARABLE GROUP    COMPARABLE GROUP   GLACIER/WESTERFED
                               LOW                MEDIAN               HIGH             MULTIPLES
<S>                     <C>                  <C>                 <C>                <C>
PRICE/LTM EPS                 9.4x                19.0x               41.4x               12.3x
PRICE TO BOOK                  80%                 141%                242%                105%
</TABLE>

                                       28
<PAGE>   36


        The proposed purchase multiples compare favorably to the national and
regional median multiples for similar transactions announced in 2000.

        The valuation multiples involved with these transactions, and the
implied sales price per share for WesterFed using each multiple, are set forth
below:

<TABLE>
<CAPTION>

                                        COMPARABLE GROUP MEDIAN              IMPLIED VALUE/SHARE
<S>                                     <C>                                  <C>
PRICE TO LTM EARNINGS                               19.0x                           $34.01
PRICE TO BOOK                                        141%                           $30.33
</TABLE>


        EXCHANGE RATIO ANALYSIS. Davidson calculated the multiple which the
merger consideration represents based on the exchange ratio in the agreement of
1.1 shares of Glacier common stock and $9.05 in cash for each share of WesterFed
common stock and the closing price of Glacier common stock as of September 18,
2000. Based on the $12.38 closing price of Glacier on September 18, 2000, the
merger consideration represented a per share value of $22.66 for each share of
WesterFed. The multiples were calculated based on WesterFed's June 30, 2000 book
value per share of $21.51, tangible book value per share of $17.22 and its last
twelve month earnings per share of $1.84. The deal price to book value was 1.05
times, the deal price to tangible book value was 1.32 times and the deal price
to last twelve month earnings per share was 12.3 times.

        DISCOUNTED CASH FLOW ANALYSIS. Using a discounted cash flow analysis,
Davidson estimated the future stream of cash flows that WesterFed could produce
over the next five years, under various circumstances, assuming WesterFed
performed in accordance with the earnings forecasts of WesterFed's management.
Davidson then estimated the terminal values for WesterFed common stock at the
end of the period by applying multiples ranging from 9.0 times to 12.0 times
earnings projected in year five. The cash flow streams and terminal values were
then discounted to present values using different discount rates (ranging from
13.0% to 15.0%) chosen to reflect different assumptions regarding the required
rates of return to holders or prospective buyers of WesterFed common stock. This
discounted cash flow analysis indicated reference ranges of between $18.83 and
$24.07 per share for WesterFed common stock. These values compare to the merger
consideration of $22.66 based on a conversion ratio of 1.1 shares, $9.05 cash
per share and Glacier closing price of $12.38 as of September 18, 2000.

        PRO FORMA MERGER ANALYSIS. Davidson reviewed projections prepared by
Glacier and WesterFed's managements for year-end 2000, 2001 and 2002. Davidson
used these inputs to generate merged company forecasts for these years.

        While Davidson did not heavily weigh the following information for the
purpose of reaching its opinion, this information was used in analyzing the
exchange ratio. This information was provided to the Glacier board to illustrate
the possible outcome of the proposed combined company.

        These projections assume that there will be no substantial shift in
future economic, financial market, competitive and regulatory conditions, all of
which are difficult or impossible to predict and largely beyond the control of
both parties to this merger.

        Actual results achieved by the combined company following the merger may
vary from this and other forecasts, and the variations may be material. Like all
forward-looking statements, this analysis produces results that are inherently
uncertain.

                                       29
<PAGE>   37

        ACCRETION/DILUTION ANALYSIS. One important analytic method that Davidson
considered in reaching its opinion is derived directly from the forecast of
combined company performance following the completion of the merger based upon
financial projections of future performance provided to it by Glacier. This
analysis examines whether and by how much the proposed transaction is expected
to be accretive to Glacier stockholders in calendar year 2001, the first year of
the combined company's operations. The critical part of this analysis is the set
of assumptions which drive the earnings per share estimate.

        Davidson concluded that Glacier management's assertion that the proposed
merger will be slightly accretive to Glacier stockholders in 2001 is reasonable.
Davidson noted that the analysis does not take into consideration any possible
revenue growth coming from the wider variety of commercial products being
offered to customers. It also does not anticipate any additional buyback of
stock. Like all forward-looking statements, this analysis produces results that
are inherently uncertain.

        The foregoing summary does not purport to be a complete description of
the analyses performed by Davidson. As described above, Davidson's opinion to
the Glacier board was one of many factors taken into consideration by the
Glacier board in making its determination to approve the merger and merger
agreement.

        D.A. DAVIDSON & CO. The Glacier board of directors retained Davidson as
an independent contractor because of its experience and expertise. Davidson's
opinion is directed only to the Glacier board and the question of whether the
merger consideration is fair from a financial perspective to holders of Glacier
common stock and does not constitute a recommendation to any Glacier stockholder
to vote in favor of the merger agreement.

        Davidson acts as a market maker in and writes research on both Glacier
and WesterFed common stock. In the ordinary course of Davidson's business,
Davidson and its affiliates may actively trade securities of Glacier and
WesterFed for their own and for the accounts of customers, and may, therefore,
at any time hold a long or short position in such securities.

        Glacier and Davidson have entered in to an agreement relating to the
services to be provided by Davidson in connection with the merger. Glacier has
agreed to pay Davidson a cash fee of 0.50% of the market value of the aggregate
consideration offered in exchange for the outstanding shares of common stock and
options of WesterFed Financial Corporation in the merger. Glacier paid $100,000
to Davidson when Davidson presented its fairness opinion to the Glacier board of
directors. Glacier also agreed to reimburse Davidson for reasonable out of
pocket expenses. Glacier has also agreed to indemnify Davidson and its officers
and employees against certain liabilities in connection with this engagement,
including liabilities under the federal securities laws.

REASONS FOR THE MERGER - WESTERFED

        WesterFed's board of directors believes that the vision of Glacier and
its strategies, in combination with its management, personnel, technical
expertise and other strengths, will provide those WesterFed stockholders
receiving Glacier common stock in the merger with an ownership interest in a
company with capabilities and resources better positioned to succeed and grow in
the competitive banking marketplace. WesterFed believes the merger with Glacier
will also provide substantial benefits to WesterFed customers and new
opportunities to its employees.

        In approving the merger agreement, and making these determinations and
its recommendation to WesterFed stockholders that they adopt the merger
agreement, the WesterFed board of directors

                                       30
<PAGE>   38

consulted with WesterFed management as well as its outside legal counsel and
financial advisor, and considered a number of factors, including the following:

        -       the amount and form of merger consideration to be received by
                WesterFed stockholders;

        -       the other terms of the merger agreement;

        -       each of WesterFed's and Glacier's business, financial condition,
                earnings, risks and prospects;

        -       historical market prices and trading information with respect to
                Glacier common stock and WesterFed common stock;

        -       a comparison of historical financial and operational measures
                for Glacier and WesterFed, including earnings, return on
                capital, capital levels and asset quality;

        -       current industry, economic and market conditions;

        -       the ability of the combined company to compete in relevant
                markets;

        -       the likelihood of receiving the required regulatory approvals in
                a timely manner;

        -       the impact of the merger on the depositors, employees, customers
                and communities served by WesterFed, including the potential
                benefits resulting from the expanded services and opportunities
                available as part of a larger organization;

        -       the ability of WesterFed stockholders to receive the stock
                portion of the merger consideration on a tax-deferred basis;

        -       the interests that certain executive officers and directors of
                WesterFed may have with respect to the merger in addition to
                their interests as stockholders of WesterFed; and

        -       the analyses, presentations and opinion of Putnam Lovell to the
                effect that the consideration to be paid by Glacier to the
                WesterFed stockholders in the merger was fair, from a financial
                point of view, to the holders of WesterFed common stock.

        The discussion above of the information and factors considered by the
WesterFed board of directors in making its decision is not intended to be
exhaustive. Due to the wide array of factors considered in connection with its
evaluation of the merger and the complexity of these matters, the board of
directors of WesterFed did not believe it was beneficial and did not seek to
quantify, rank or otherwise assign relative weights to these factors. The
WesterFed board of directors did not undertake to make any specific
determination as to whether any particular factor, or any aspect of any
particular factor, was favorable or unfavorable to its ultimate determination,
but rather the WesterFed board of directors conducted an overall analysis of the
factors described above in addition to other factors, including thorough
discussions with and questioning of WesterFed's management, legal, financial and
accounting advisors. In addition, the individual members of the WesterFed board
of directors may have given different weight to different factors.

                                       31
<PAGE>   39

RECOMMENDATION OF THE WESTERFED BOARD OF DIRECTORS

        FOR THE REASONS SET FORTH ABOVE, THE WESTERFED BOARD OF DIRECTORS HAS
UNANIMOUSLY APPROVED THE MERGER AGREEMENT AS ADVISABLE AND IN THE BEST INTERESTS
OF THE WESTERFED STOCKHOLDERS AND RECOMMENDS THAT THE WESTERFED STOCKHOLDERS
VOTE "FOR" ADOPTION OF THE MERGER AGREEMENT.

OPINION OF WESTERFED'S FINANCIAL ADVISOR

        Pursuant to an engagement letter dated May 22, 2000, WesterFed engaged
Putnam Lovell to perform financial advisory services, including advising it on a
potential sale of WesterFed. As part of its engagement, Putnam Lovell agreed to
render to the WesterFed board an opinion with respect to the fairness from a
financial point of view of the consideration to be received by holders of
WesterFed common stock in a potential sale of WesterFed. Putnam Lovell is a
nationally recognized investment banking firm and, as part of its investment
banking activities, is regularly engaged in the valuation of businesses and
their securities in connection with merger transactions and other types of
acquisitions, private placements and valuations for corporate and other
purposes. WesterFed selected Putnam Lovell as its financial advisor on the basis
of its experience and expertise and its reputation in the banking and investment
communities.

        At a meeting of the WesterFed board on September 20, 2000, Putnam Lovell
delivered its oral opinion, stating that the consideration to be received by the
stockholders of WesterFed pursuant to the merger was fair to such stockholders
from a financial point of view, as of the date of such opinion. Putnam Lovell's
oral opinion was subsequently confirmed in writing as of the date of the oral
opinion. On the date of this document Putnam Lovell delivered a written update
of its fairness opinion to the WesterFed board reconfirming that the merger
consideration was fair to the WesterFed stockholders from a financial point of
view as of such date. No limitations were imposed by the WesterFed board with
respect to the investigations made or procedures followed by Putnam Lovell in
rendering its opinion

        The full text of Putnam Lovell's written opinion, which sets forth the
assumptions made, matters considered, and limitations of the review by Putnam
Lovell, is attached as APPENDIX E to this prospectus/joint proxy statement. The
following summary of Putnam Lovell's opinion is qualified in its entirety by
reference to the full text of its opinion. Putnam Lovell's opinion is directed
to the WesterFed board and does not constitute a recommendation on how any
stockholder should vote with respect to the merger agreement. Putnam Lovell's
opinion addresses only the fairness from a financial point of view of the
consideration to be received by the holders of WesterFed common stock and does
not address the underlying decision of the WesterFed board to proceed with the
merger or any other aspect of the merger agreement. In furnishing its opinion,
Putnam Lovell did not admit that it is an expert with the meaning of the term
"expert" as used in the Securities Act of 1933, as amended, nor did it admit
that its opinion constitutes a report or valuation within the meaning of the
Securities Act of 1933, and statements to such effect are included in the Putnam
Lovell opinion.

        In connection with Putnam Lovell's opinion, Putnam Lovell, among other
things: (i) reviewed certain publicly available financial and other data with
respect to WesterFed and Glacier, including the consolidated financial
statements for recent years and interim periods to June 30, 2000 and certain
other relevant financial and operating data relating to WesterFed and Glacier
made available to Putnam Lovell from published sources and from the internal
records of WesterFed and Glacier; (ii) reviewed the financial terms and
conditions of the September 18, 2000 draft of the merger agreement; (iii)
reviewed certain publicly available information concerning the trading of, and
the trading market for, WesterFed common stock and Glacier common stock; (iv)
compared the financial performance of WesterFed and

                                       32
<PAGE>   40
Glacier with certain other financial institutions which Putnam Lovell deemed to
be relevant; (v) considered the financial terms, to the extent publicly
available, of selected recent business combinations between financial
institutions which Putnam Lovell deemed to be comparable, in whole or in part,
to the merger; (vi) reviewed and discussed with representatives of the
management of WesterFed and Glacier certain information of a business and
financial nature regarding WesterFed and Glacier, furnished to Putnam Lovell by
them, including financial forecasts and related assumptions of WesterFed and
Glacier; (vii) made inquiries regarding and discussed the merger and the merger
agreement and other matters related thereto with WesterFed's counsel; and (viii)
performed such other analyses and examinations as Putnam Lovell deemed
appropriate.

        Putnam Lovell reviewed the September 18, 2000 draft of the merger
agreement in its preparation of its opinion. While WesterFed and Glacier had the
opportunity to agree to materially add, delete or alter material terms of the
merger agreement prior to its execution, the final merger agreement was
substantially similar to the September 18, 2000 draft of the merger agreement.

        In connection with Putnam Lovell's review, Putnam Lovell did not assume
any obligation independently to verify the foregoing information and has relied
on such information being accurate and complete in all material respects. With
respect to the financial forecasts for WesterFed and Glacier provided to Putnam
Lovell by their respective managements, Putnam Lovell has assumed for purposes
of its opinion that the forecasts and estimates were reasonably prepared on
basis reflecting the best available estimates and judgments of WesterFed's and
Glacier's managements at the time of preparation as to the future financial
performance of WesterFed and Glacier. Putnam Lovell has also assumed that there
have been no material changes in WesterFed's or Glacier's assets, financial
condition, results of operations, business or prospects since the respective
dates of their last financial statements made available to Putnam Lovell. Putnam
Lovell has relied on advice of counsel to WesterFed as to all legal matters with
respect to WesterFed, the merger and the merger agreement. Putnam Lovell has
assumed that the merger will be consummated in a manner that complies in all
respects with the applicable provisions of the Securities Act of 1933, the
Securities Exchange Act of 1934 and all other applicable federal and state
statutes, rules and regulations.

        In addition, Putnam Lovell has not assumed 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 WesterFed or Glacier, nor has Putnam Lovell been furnished with
any such appraisals. Putnam Lovell is not an expert in the evaluation of loan
portfolios for purposes of assessing the adequacy of the allowances for losses
with respect thereto and has assumed, with WesterFed's consent, that such
allowances for each of WesterFed and Glacier are in the aggregate adequate to
cover such losses. WesterFed has informed Putnam Lovell, and Putnam Lovell has
assumed, that the merger will be recorded as a purchase under accounting
principles generally accepted in the United States of America. Finally, Putnam
Lovell's opinion is based on economic, monetary and market and other conditions
as in effect on, and the information made available to Putnam Lovell as of
September 20, 2000 and on the date of this document. Accordingly, although
subsequent developments may affect this opinion, Putnam Lovell has not assumed
any obligation to update, revise or reaffirm this opinion after the date of this
document.

        Set forth below is a brief summary of the information presented by
Putnam Lovell to the WesterFed board in connection with its September 20, 2000
opinion. Some of the summaries of financial analyses performed by Putnam Lovell
include information presented in tabular format. In order to fully understand
the financial analyses performed by Putnam Lovell, the tables must be read
together with the text of each summary. The tables alone do not constitute a
complete description of the financial analyses. Considering the data set forth
in the tables without considering the full narrative description of

                                       33
<PAGE>   41

the financial analyses, including methodologies and assumptions underlying the
analyses, could create a misleading or incomplete view of the financial analyses
performed by Putnam Lovell.

                          DISCOUNTED CASH FLOW ANALYSIS

        In performing a discounted cash flow analysis, Putnam Lovell utilized
management's estimates of future net income and assumed that net tangible equity
in excess of 7.0% of tangible assets generated through earnings would be
distributed as cash outflows to the WesterFed stockholders over a four-year
period. The estimated net income in the year 2004 was multiplied by an earnings
multiple ranging from 8.0x to 10.0x to generate a terminal value representing
the potential value of WesterFed in 2004. The cash distributions and the
terminal value were discounted back to the present using a 12.5% to 17.5%
discount rate. This analysis indicated that the present value of the WesterFed's
future stock price plus cash distributions ranged from $16.19 to $21.51 per
share. The approximate value of the per share offer from Glacier was $23.14 on
September 20, 2000, which amount exceeded the range of values implied by this
analysis. Discounted cash flow analysis is a widely used valuation methodology
but it relies on numerous assumptions, including asset and earnings growth
rates, terminal values and discount rates. The analysis is not necessarily
reflective of the actual values of WesterFed common stock.

                       COMPARABLE PUBLIC COMPANY ANALYSIS

        Putnam Lovell compared selected balance sheet data, profitability
measures and market statistics of WesterFed to a comparison group of ten
publicly traded western thrifts, including: Cascade Financial Corporation, First
Mutual Bancshares, Inc., First Washington Bancorp, Inc., HF Financial Corp.,
Heritage Financial Corporation, Horizon Financial Corporation, InterWest
Bancorp, Inc., Klamath First Bancorp, Inc., Sterling Financial Corporation, and
Washington Federal, Inc. The multiples that were analyzed were price to book
value, price to tangible book value, price to latest twelve months earnings,
price to 2001 estimated earnings, price to deposits, and market capitalization
to assets. The medians of these multiples were then multiplied by WesterFed's
June 30, 2000 financial measures yielding a range of values from $17.97 to
$20.56 per share and a median value of $19.26 per share. The approximate value
of the per share offer from Glacier was $23.14 on September 20, 2000, which
amount exceeded the range of values implied by this analysis of such date.

                    ANALYSIS OF SELECTED MERGER TRANSACTIONS

        Putnam Lovell reviewed the consideration paid in selected categories of
recent financial institution transactions. Specifically, Putnam Lovell reviewed
selected financial institution bank transactions from (i) January 1, 2000 to
September 18, 2000 consisting of national thrift mergers involving deal values
greater than $50 million and less than $200 million and (ii) March 1, 2000 to
September 18, 2000 thrift mergers involving targets with return on equity less
than 10% which Putnam Lovell felt was a more appropriate comparable. For each
transaction, Putnam Lovell analyzed data illustrating purchase price to book
value, purchase price to tangible book value, purchase price to latest twelve
months earnings per share, the ratio of the premium (i.e., purchase price in
excess of tangible book value) to core deposits, and the premium paid relative
to the WesterFed's stock price thirty days prior to announcement.

        A summary of the median multiples in the analysis as compared to
WesterFed in the merger based upon a per share value of $23.14 is as follows:

                                       34
<PAGE>   42
        SUMMARY OF MEDIAN PREMIUMS PAID

<TABLE>
<CAPTION>
                                                                  PRICE/
                                                 PRICE/         TANGIBLE          PRICE/                          30 DAY
                                                  BOOK            BOOK             LTM           PREMIUM/         MARKET
                                                  VALUE           VALUE            EPS             CORE            PRICE
                                                MULTIPLE        MULTIPLE        MULTIPLE         DEPOSITS         PREMIUM
                                                  PAID            PAID            PAID             PAID            PAID
                                               -----------     -----------     -----------      -----------     -----------
  <S>                                          <C>             <C>             <C>              <C>             <C>
  Median
    Thrifts (2000YTD Value b/n $50-$200min)       1.63x           1.63x           18.5x            14.4%           39.2%
    Thrifts (3/00-YTD ROD <10%)                   1.28x           1.28x           19.2x             5.4%           39.0%
  --------------------------------------------------------------------------------------------------------------------------
    GBCI Acquisition of WSTR                      1.07x           1.34x           12.6x             5.1%           46.9%
  --------------------------------------------------------------------------------------------------------------------------
</TABLE>


        In the case of the thrifts with a return on equity of less than 10%, the
multiples of price to book value and the 30 day market premium exceeded the
median of the comparables, while the premium to core deposits was slightly less
than that received by the comparables.

                              CONTRIBUTION ANALYSIS

        Putnam Lovell analyzed the contribution of each of WesterFed and Glacier
to assets, gross loans, and tangible equity as of June 30, 2000, as well as each
party's contribution to market capitalization, calendar year 2000 estimated net
income, latest twelve months net income of the pro forma combined companies and
projected net income for the calendar year ending December 31, 2000. This
analysis indicated that based on the pro forma combined balance sheet of
WesterFed and Glacier at June 30, 2000, WesterFed would have contributed
approximately 48.0% of the assets, 46.5% of the gross loans, 46.6% of the
tangible equity, 30.3% of market capitalization, 38.3% of the latest twelve
months net income and 35.6% of calendar year 2000 estimated net income. Based on
a 100% stock transaction and an assumed exchange ratio of 1.8 shares of Glacier
common stock for each share of WesterFed's common stock, holders of WesterFed's
common stock would own approximately 40.5% of the combined companies based on
common shares outstanding at August 31, 2000, which exceeds their contributions
to the combined company's market capitalization, the combined company's last
twelve months net income and the combined company's calendar year 2000 projected
net income.

                      PRO FORMA EARNINGS DILUTION ANALYSIS

        Using earning estimates and projected growth rates for WesterFed and
Glacier provided by their managements, Putnam Lovell compared estimated reported
earnings per share of Glacier common stock on a stand-alone basis and on a pro
forma combined company basis including WesterFed for the calendar year ending
December 31, 2001. Putnam Lovell noted that the merger would result in 7.2%
dilution of Glacier's estimated reported earnings per share in 2001, prior to
synergies. Glacier would need synergies of 10.5% of noninterest expense to
eliminate earnings dilution.

        These estimates were used for purposes of this analysis only and are not
necessarily indicative of expected results or plans of Glacier, WesterFed, or
the combined company. Additionally, this analysis did not incorporate any
anticipated cost savings or revenue enhancements that could result from the
merger.

                            DIVIDEND PICKUP ANALYSIS

        For WesterFed stockholders who receive Glacier common stock in the
merger, Putnam Lovell applied an assumed exchange ratio of 1.8 shares of Glacier
common stock for each share of WesterFed common stock, based on a per share
consideration of $23.14 and a Glacier stock price of $12.81, to the combined
company's pro forma annualized cash dividend per share which resulted in $1.09
per WesterFed share on a pro forma combined basis versus $0.68 per WesterFed
share on a stand alone basis,

                                       35
<PAGE>   43

which is a 59.7% pick-up in dividends for WesterFed stockholders receiving
Glacier common stock in the merger.

                            EARNINGS GROWTH ANALYSIS

        Using a 10.0x terminal multiple (the median price to the latest twelve
months earnings multiple of the comparable publicly traded western financial
institutions) and a 15.0% discount rate, Putnam Lovell determined that WesterFed
would have to achieve an average annual earnings growth rate of 23.9% through
the year 2004 in order to obtain a present value stock price of $23.14.
WesterFed's stand alone estimated earnings growth rate is significantly less
than that amount.

        While the forgoing summary describes all analyses and examinations that
Putnam Lovell considered to be material to its opinion, it is not a
comprehensive description of all analyses and examinations actually conducted by
Putnam Lovell. The preparation of a fairness opinion is not susceptible to
partial analysis or summary description. Putnam Lovell believes that its
analyses and the above summary must be considered as a whole and that selecting
a portion of its analyses or factors considered, without considering all
analyses and factors, would create an incomplete view of the process underlying
the analyses in its presentation to WesterFed's board of directors. Putnam
Lovell did not assign any specific weight to any of the analyses described
above. 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 analyses. Accordingly, the ranges of values resulting from any
particular analysis described above should not be taken to be Putnam Lovell's
view of the actual value of WesterFed.

        In performing its analyses, Putnam Lovell made numerous assumptions with
respect to industry performance, general business and economic conditions and
other matters, many of which are beyond the control of WesterFed or Glacier. The
analyses performed by Putnam Lovell 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 Putnam Lovell'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 used by Putnam Lovell 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 dated May 22, 2000, WesterFed has paid
Putnam Lovell fees totaling $100,000. Based on the transaction value at the time
of the announcement of the transaction, Putnam Lovell will receive an additional
fee of approximately $866,000 upon the closing of the merger. Accordingly, a
significant portion of Putnam Lovell's fee is contingent upon the closing of the
merger. WesterFed has also agreed to reimburse Putnam Lovell for its reasonable
out-of-pocket expenses, including fees of legal counsel and other experts
retained by Putnam Lovell. WesterFed has agreed to indemnify Putnam Lovell, its
affiliates, and their respective partners, directors, officers, agents,
consultants, employees and controlling persons against certain liabilities,
including liabilities under federal securities law.

                                   THE MERGER

        The following is a brief discussion of the material aspects of the
merger. There are other aspects of the merger that are not discussed below, but
that are contained in the merger agreement. You are being asked to adopt the
merger agreement, and you are urged to read the merger agreement carefully. It
is attached as APPENDIX A.

                                       36
<PAGE>   44
        BASIC TERMS OF THE MERGER

        WesterFed stockholders may elect to receive shares of Glacier common
stock and/or cash in exchange for their WesterFed shares. Because of the
election and allocation procedures that are described below, no guarantee can be
given that the choice of any WesterFed stockholder will be honored. THE TAX
CONSEQUENCES OF RECEIVING CASH CONSIDERATION WILL DIFFER FROM THE TAX
CONSEQUENCES OF RECEIVING STOCK CONSIDERATION. WESTERFED'S STOCKHOLDERS ARE
URGED TO READ CAREFULLY THE INFORMATION SET FORTH BELOW UNDER "MATERIAL UNITED
STATES FEDERAL INCOME TAX CONSEQUENCES."

        MERGER CONSIDERATION

        The total consideration to be paid by Glacier for WesterFed will depend
on the average closing price of Glacier stock for the 20 trading day period
ending on the 15th trading day prior to completion of the merger. The exact
number of shares to be issued by Glacier and amount of cash to be paid by
Glacier will fluctuate based upon:

        -       the average closing price of Glacier stock for the twenty day
                trading period ending on the fifteenth trading day prior to
                completion of the merger;

        -       the number of WesterFed shares outstanding immediately prior to
                completion of the merger; and

        -       the elections made by WesterFed stockholders to receive cash or
                stock.

        The following table shows the total merger consideration that Glacier
would pay, assuming various average closing prices for Glacier stock, and
assuming that the 4,116,111 shares of WesterFed stock currently outstanding
remain outstanding immediately prior to completion of the merger. In the event
that the 533,806 options currently outstanding are exercised prior to the
completion of the merger, the number of shares of WesterFed stock would increase
to 4,649,917, and the consideration for each WesterFed share would be adjusted
accordingly.

<TABLE>
<CAPTION>
         AVERAGE CLOSING PRICE     CONSIDERATION               TOTAL
                   OF                 FOR EACH             CONSIDERATION
             GLACIER STOCK        WESTERFED SHARE    (IN THOUSANDS OF DOLLARS)
         ---------------------    ---------------    -------------------------
         <S>                      <C>                <C>
                $ 9.00                 $19.94                $ 82,075
                $ 9.50                 $19.94                $ 82,075
                $ 9.90                 $19.94                $ 82,075
                $10.00                 $20.05                $ 82,528
                $10.50                 $20.60                $ 84,792
                $11.00                 $21.15                $ 87,056
                $11.50                 $21.70                $ 89,320
                $12.00                 $22.25                $ 91,583
                $12.50                 $22.80                $ 93,847
                $13.00                 $23.35                $ 96,111
                $13.50                 $23.90                $ 98,375
                $14.00                 $24.45                $100,639
                $14.50                 $25.00                $102,903
                $15.00                 $25.55                $105,167
</TABLE>


                                       37
<PAGE>   45
<TABLE>
<CAPTION>
         AVERAGE CLOSING PRICE     CONSIDERATION               TOTAL
                   OF                 FOR EACH             CONSIDERATION
             GLACIER STOCK        WESTERFED SHARE    (IN THOUSANDS OF DOLLARS)
         ---------------------    ---------------    -------------------------
         <S>                      <C>                <C>
                $15.50                 $26.10                $107,430
                $16.00                 $26.65                $109,694
</TABLE>
        Each WesterFed stockholder may elect to receive, for each WesterFed
share, either:

        -       a number of shares of Glacier stock equal to the per-share
                consideration (as described below) divided by the average
                closing price of Glacier stock (as described below), except that
                cash will be paid for any fractional share interest; or

        -       cash in an amount equal to the per-share consideration.

        In determining the amount of merger consideration to be exchanged for
each WesterFed share the following definitions will apply:

        "average closing price" means the average of the daily closing price per
share of Glacier stock reported on the Nasdaq Stock Market during the 20
consecutive trading day period ending on the fifteenth trading day immediately
before the merger is completed.

        "per-share consideration" has the following meanings:

        -       if the average closing price of Glacier stock is greater than or
                equal to $9.90, then the per-share consideration will be $9.05
                plus 1.1 times the average closing price.

        -       if the average closing price is less than $9.90 and greater than
                or equal to $9.00, the per-share consideration will be $19.94.

        -       if the average closing price is less than $9.00, then the
                per-share consideration will be $10.04 plus 1.1 times the
                average closing price, unless Glacier elects to make the
                per-share consideration equal to $19.94. If the average closing
                price of Glacier stock is less than $9.00, the WesterFed board
                of directors may vote to terminate the merger agreement, and
                give notice of the action to Glacier, in which case the merger
                will be terminated if Glacier's board does not increase the
                per-share consideration to $19.94.

        Here are some examples of how "per share consideration" would work:

        Glacier Stock at $13.00

        If the average closing price of Glacier stock is $13.00, then the
per-share consideration would be $9.05 plus 1.1 times $13.00 ($14.30), which
equals $23.35; accordingly, a WesterFed share exchanged for cash would receive
$23.35 and a WesterFed share exchanged for Glacier stock would receive 1.7962
shares of Glacier stock, calculated by dividing $23.35 by $13.00.

        Glacier Stock at $12.00

        If the average closing price of Glacier stock is $12.00 then the
per-share consideration would be $9.05 plus 1.1 times $12.00 ($13.20), which
equals $22.25; accordingly, a WesterFed share exchanged


                                       38
<PAGE>   46
for cash would receive $22.25 and a WesterFed share exchanged for Glacier stock
would receive 1.8542 shares of Glacier stock, calculated by dividing $22.25 by
$12.00.

        Glacier Stock at $9.50

        If the average closing price of Glacier stock is $9.50 then the
per-share consideration would be $19.94; accordingly, a WesterFed share
exchanged for cash would receive $19.94 and a WesterFed share exchanged for
Glacier stock would receive 2.0989 shares of Glacier stock, calculated by
dividing $19.94 by $9.50.

        The following table sets forth the amount of cash or Glacier stock to be
received by a holder of WesterFed shares at various average closing prices of
Glacier stock.

<TABLE>
<CAPTION>
                                                            STOCK CONSIDERATION
  AVERAGE CLOSING PRICE        CASH CONSIDERATION        (NUMBER OF GLACIER SHARES
     OF GLACIER STOCK      (FOR EACH WESTERFED SHARE)    FOR EACH WESTERFED SHARE)
  ---------------------    --------------------------    -------------------------
  <S>                      <C>                           <C>
        $ 9.00                       $19.94                      2.2156
        $ 9.50                       $19.94                      2.0989
        $ 9.90                       $19.94                      2.0141
        $10.00                       $20.05                      2.0050
        $10.50                       $20.60                      1.9619
        $11.00                       $21.15                      1.9227
        $11.50                       $21.70                      1.8870
        $12.00                       $22.25                      1.8542
        $12.50                       $22.80                      1.8240
        $13.00                       $23.35                      1.7962
        $13.50                       $23.90                      1.7704
        $14.00                       $24.45                      1.7464
        $14.50                       $25.00                      1.7241
        $15.00                       $25.55                      1.7033
        $15.50                       $26.10                      1.6839
        $16.00                       $26.65                      1.6656
</TABLE>


        At the time of completion of the merger, the value of the per share
consideration to be received in Glacier stock will likely be different than the
value of the per share consideration to be received in cash, because it is
unlikely that Glacier's stock price on that date will be the same as the average
closing price.

        The amount of cash and the amount of Glacier stock that Glacier will pay
in the merger is limited under the merger agreement. If WesterFed stockholders
elect to receive more than the maximum amount of cash or Glacier stock payable
in the merger, their elections will be modified according to the Allocation
Procedures described below.

ELECTION PROCEDURES

        If you have a preference as to the form of consideration that you want
to receive for your WesterFed shares, you must make an election because shares
as to which an election has been made will be given priority in allocating such
consideration over shares as to which no election is received. Neither the
WesterFed board nor its financial advisor makes any recommendation as to whether
you should elect to receive the cash consideration or the stock consideration in
the merger. YOU MUST MAKE YOUR OWN

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<PAGE>   47

DECISION WITH RESPECT TO SUCH ELECTION, BEARING IN MIND THE TAX CONSEQUENCES OF
THE ELECTION YOU CHOOSE. See "Material United States Federal Income Tax
Consequences."

        Approximately 25 days prior to the anticipated merger completion date,
the exchange agent will mail to each WesterFed stockholder of record as of 5
days prior to such mailing, an election form and letter of transmittal to be
used by such stockholder to elect to receive cash, Glacier stock, or a
combination of both, for his or her WesterFed shares.

        If your WesterFed shares are held in "street name" by a broker, your
broker will forward the election form to you.

        FOR AN ELECTION FORM TO BE EFFECTIVE, IT MUST BE:

        -       PROPERLY COMPLETED AND EXECUTED;

        -       ACTUALLY RECEIVED BY THE EXCHANGE AGENT PRIOR TO THE ELECTION
                DEADLINE SPECIFIED IN THE ELECTION FORM; AND

        -       ACCOMPANIED BY WESTERFED STOCK CERTIFICATES AS TO WHICH THE
                ELECTION IS BEING MADE.

        If a WesterFed stockholder fails to deliver a properly completed and
executed election form to the exchange agent by the election deadline,
accompanied by the appropriate stock certificate(s), such stockholder's
WesterFed shares will be deemed "non-election shares." As a result, such
stockholder will have no choice as to whether he or she receives cash or Glacier
stock in payment for such shares. Such WesterFed stockholders will receive cash,
or Glacier stock, or a combination of cash and Glacier stock, depending on the
elections made by other WesterFed stockholders, and the resulting allocation
that is required under the merger agreement as described below under
"--Allocation Procedures."

        An election form may be revoked or changed by the person submitting it,
but any such revocation or change must be received by the exchange agent prior
to the election deadline.

        The exchange agent will have reasonable discretion to determine whether
any election, revocation or change has been properly or timely made and to
disregard immaterial defects in an election form, and any good faith decision of
the exchange agent regarding such matters will be binding and conclusive.
NEITHER GLACIER NOR THE EXCHANGE AGENT WILL BE UNDER ANY OBLIGATION TO NOTIFY
ANY PERSON OF ANY DEFECT IN AN ELECTION FORM.

ELECTION PROCEDURE EXAMPLES

        Here are some examples of how the election procedure would work:

        Suppose Stockholder Smith owns 100 WesterFed shares and elects to
exchange 50 of his shares for Glacier stock and the other 50 for cash. Here are
examples of what Stockholder Smith would receive at various average closing
prices of Glacier Stock.

        These examples assume that Stockholder Smith's election is not affected
by allocations related to the elections made by all other WesterFed
stockholders. See "Allocation Procedures" below for an example of how those
allocation procedures might work.

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<PAGE>   48

        Glacier Stock at $13.00

        If the average closing price of Glacier stock is $13.00, then the amount
of cash Stockholder Smith would receive for each WesterFed share (per-share
consideration) would be:

        $9.05 + (1.1 x $13.00) = $23.35,

        and the number of Glacier shares Stockholder Smith would receive for
        each WesterFed share would be:

        $23.35 / $13.00 = 1.7962, the final exchange ratio

        In the above example, Stockholder Smith would receive $1,167.50 (50 x
$23.35) and 89.810 shares of Glacier stock (50 x 1.7962). Then, Stockholder
Smith's 0.810 fractional Glacier share would be exchanged for a cash payment of
0.810 times the closing price per share of Glacier stock on the date the merger
is completed.

        Glacier Stock at $12.00

        If the average closing price of Glacier stock is $12.00, then the amount
of cash Stockholder Smith would receive for each WesterFed share (per-share
consideration) would be:

        $9.05 + (1.1 x $12.00) = $22.25,

        and the number of Glacier shares Stockholder Smith would receive for
each WesterFed share would be:

        $22.25 / $12.00 = 1.8542, the final exchange ratio

        In the above example, Stockholder Smith would receive $1,112.50 in cash
(50 x $22.25) and 92.710 shares of Glacier stock (50 x 1.8542). Then,
Stockholder Smith's 0.710 fractional Glacier share would be exchanged for a cash
payment of 0.710 times the closing price per share of Glacier stock on the date
the merger is completed.

        Glacier Stock at $9.50

        If the average closing price of Glacier stock is $9.50, then the amount
of cash Stockholder Smith would receive for each WesterFed share (per-share
consideration) would be $19.94, and the number of Glacier shares Stockholder
Smith would receive for each WesterFed share would be:

        $19.94 /$9.50 = 2.0989, the final exchange ratio

        In the above example, Stockholder Smith would receive $997 in cash (50 x
$19.94) and 104.945 shares of Glacier stock (50 x 2.0989). Then, Stockholder
Smith's 0.945 fractional Glacier share would be exchanged for a cash payment of
0.945 times the closing price per share of Glacier stock on the date the merger
is completed.

        WESTERFED STOCKHOLDERS SHOULD NOT SEND THEIR STOCK CERTIFICATES WITH THE
ENCLOSED PROXY. IF YOU INTEND TO MAKE AN ELECTION, YOUR STOCK CERTIFICATES MUST
BE FORWARDED TO THE EXCHANGE AGENT WITH YOUR ELECTION FORM. IF YOU DO NOT MAKE
AN ELECTION, YOU WILL RECEIVE WRITTEN INSTRUCTIONS FROM THE EXCHANGE AGENT AFTER
COMPLETION OF THE MERGER FOR THE EXCHANGE OF YOUR STOCK CERTIFICATES.

                                       41
<PAGE>   49

ALLOCATION PROCEDURES

        Maximum Amount of WesterFed Shares That Can Be Exchanged for Cash

        Your ability to elect to receive all cash, even if that is what you
elect, is subject to the merger agreement's requirement that the total cash
consideration (including dissenting shares) may not exceed either $41.3 million,
or 55% of the total value of the merger consideration based upon the closing
price of Glacier common stock on the date the merger is completed, whichever is
lower. If the total cash elections (calculated as if all dissenting shares are
to receive cash consideration on a priority basis) are greater than either of
those amounts, then all persons making cash elections will receive their pro
rata share of the excess cash elections in the form of Glacier common stock
based upon the final exchange ratio. The proration will reflect the proportion
that the number of cash election shares of each holder bears to the total number
of cash election shares.

        Maximum Number of WesterFed Shares That Can Be Exchanged for Glacier
Stock

        There is also a limit on the aggregate number of WesterFed shares that
may be exchanged for Glacier stock. That number will be determined by
multiplying 1.1 times the total number of WesterFed shares issued and
outstanding immediately prior to the time the merger is completed, divided by
the "final exchange ratio." The final exchange ratio will be determined by
dividing the per share consideration by the average closing price of Glacier
stock. By way of example, if there are 4,116,111 WesterFed shares issued and
outstanding, the average closing price is $12.00, and the per share
consideration is $22.25, the aggregate number of WesterFed shares that can be
exchanged for Glacier stock would be calculated as follows:

        Final exchange ratio = $22.25 / $12.00 = 1.8542

        Maximum number of stock election shares = (1.1 x 4,116,111) / 1.8542 =
2,441,874

        If the number of stock election shares exceeds the maximum number, then
all persons making stock elections will be paid the per share consideration in
cash for the excess stock election shares on a pro rata basis. The proration
will reflect the proportion that number of stock election shares of each holder
bears to the total number of stock election shares.

EXAMPLE OF ALLOCATION MECHANISM

        If there are excess cash elections

        Here is an example of how the allocation procedure would work with
respect to Stockholder Smith's shares, assuming (i) an average closing price of
$12.00 which means the per share consideration is $22.25, (ii) a closing price
on the date the merger is completed of $12.00, (iii) total merger consideration
of $91,583,000 (rounded)(see "Merger Consideration" above), (iv) that out of a
total of 4,116,111 shares outstanding, WesterFed stockholders holding 3,292,889
shares of WesterFed stock (80%) have elected to receive cash in the merger, and
(v) no WesterFed stockholder has perfected dissenters' rights:

        -       All WesterFed stockholders who elected to receive Glacier stock
                would receive Glacier stock.

        -       All non-election shares would be exchanged for Glacier stock;
                and

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<PAGE>   50

        - All cash election shares would be allocated as follows:

                55% of the total merger consideration = $50,370,650.

                Since $50,370,650 exceeds the $41,300,000 maximum for cash
                payment provided for the merger agreement, the maximum number of
                WesterFed shares that can be exchanged for cash would be
                calculated as follows:

                $41,300,000 / $22.25 = 1,856,180 = maximum number of WesterFed
                shares that can be exchanged for cash.

                50 / 3,292,889 = 0.000015184 = Stockholder Smith's pro-rata
                fraction of all cash election shares 0.000015184 x 1,856,180 =
                28 (rounded) = number shares of Stockholder Smith's WesterFed
                stock that may be exchanged for cash.

                0.000015184 x 1,856,180 = 28 (rounded) = number shares of
                Stockholder Smith's WesterFed stock that may be exchanged for
                cash.

        Stockholder Smith would thus receive $623.00 for 28 of his cash election
shares (28 x $22.25), and would receive 133.5024 shares of Glacier stock for his
remaining 72 WesterFed shares (72 x 1.8542). Then, Stockholder Smith's 0.5024
fractional Glacier share would be exchanged for a cash payment of 0.5024 times
$12.00, or $6.03.

        If there are excess stock elections

        Here is an example of how the allocation procedure would work with
respect to Stockholder Smith's shares, using all of the same assumptions as in
the above example, except that out of a total of 4,116,111 shares outstanding,
WesterFed stockholders holding 3,292,889 shares of WesterFed stock have elected
to receive Glacier stock in the merger.

        -       All WesterFed stockholders who elected to receive cash would
                receive cash.

        -       All non-election shares would be exchanged for cash; and

        - All stock election shares would be allocated as follows:

                $22.25 / $12.00 = 1.8542 = final exchange ratio

                1.1 x 4,116,111 = 4,527,722

                4,527,722 / 1.8542 = 2,441,874 = maximum number of WesterFed
                Shares that can be exchanged for Glacier stock

                50 / 3,292,889 = 0.000015184 = Stockholder Smith's pro-rata
                fraction of all stock election shares

                .000015184 x 2,441,874 = 37 (rounded) = number of Stockholder
                Smith's WesterFed shares that may be exchanged for Glacier
                stock.

        Stockholder Smith would thus receive 68.6054 shares of Glacier stock for
37 of his stock election shares (37 x 1.8542), and $1,401.75 in cash for his
remaining 63 WesterFed shares (63 x

                                       43
<PAGE>   51

$22.25). Then, Stockholder Smith's 0.6054 fractional share would be exchanged
for a cash payment of 0.6054 times $12.00, or $7.26.

CASH FOR FRACTIONAL SHARES

        Glacier will not issue certificates for fractional shares of Glacier
stock. Each WesterFed stockholder who would otherwise be entitled to receive a
fractional share will receive cash in lieu of such fractional share, in an
amount determined by multiplying such fraction by the closing price per share of
Glacier stock on the effective date of the merger. Holders of WesterFed stock
will have no other rights with respect to such fractional shares.

EXCHANGE OF WESTERFED STOCK CERTIFICATES FOR NON-ELECTION SHARES

        As promptly as possible after the merger is completed, Glacier (or the
exchange agent) will send transmittal materials to each WesterFed stockholder of
record who did not previously tender his or her stock certificates with an
election form. Such WesterFed stockholders will use these materials to exchange
their WesterFed stock certificates for the merger consideration payable in
exchange for non-election shares. The transmittal materials will contain
information and instructions regarding the surrender and exchange of such
WesterFed stock certificates. If Glacier common stock is to be exchanged for
such non-election shares, no dividends or other distributions will be made with
respect to such shares of Glacier common stock until the exchange procedures set
forth above are completed.

DEEMED ISSUANCE OF GLACIER COMMON STOCK

        All shares of Glacier common stock to be issued to holders of WesterFed
shares in the merger will be deemed issued as of completion of the merger.

WESTERFED STOCK OPTION AGREEMENT

        As an inducement to Glacier to enter into the merger agreement,
WesterFed has granted an option to Glacier, by agreement dated as of September
20, 2000 to purchase authorized but unissued shares of WesterFed common stock up
to an amount which, if issued, would constitute 19.9% of the outstanding
WesterFed common stock, at a price of $15.75 per share. Glacier's option
effectively makes acquisition of WesterFed by a party other than Glacier more
expensive, and therefore less likely, as there would be more shares of WesterFed
common stock outstanding.

        The option is triggered by events relating to WesterFed's involvement in
an acquisition transaction with a party other than Glacier. An acquisition
transaction includes:

        -       a merger involving WesterFed or its savings bank subsidiary,

        -       the sale or lease of any substantial part of the assets or
                deposits of WesterFed or its savings bank subsidiary, or

        -       an acquisition of 10% or more of the voting securities of
                WesterFed or its savings bank subsidiary.

        The stock option agreement categorizes various events relating to an
acquisition transaction as either "Initial Triggering Events" or "Subsequent
Triggering Events." The option is not triggered unless

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<PAGE>   52

both an "Initial Triggering Event" and a "Subsequent Triggering Event" occur
prior to the termination of the option.

        In general, Initial Triggering Events relate to events preliminary to
completion of an acquisition transaction, such as the entering into an
agreement, a public announcement or a regulatory filing. In particular, each of
the following constitutes an Initial Triggering Event:

        -       WesterFed or its savings bank subsidiary, without Glacier's
                prior consent, enters into an agreement with anyone other than
                Glacier to engage in an acquisition transaction, or WesterFed's
                board recommends that WesterFed's stockholders approve an
                acquisition transaction with anyone other than Glacier;

        -       any party other than Glacier acquires or obtains the right to
                acquire control of 10% or more of WesterFed's stock;

        -       any party other than Glacier announces a proposal to engage in
                acquisition transaction with WesterFed or its savings bank
                subsidiary;

        -       WesterFed's board of directors withdraws or adversely modifies
                its recommendation that WesterFed's stockholders adopt the
                merger agreement;

        -       any person other than Glacier files with the SEC a registration
                statement or tender offer materials relating to an acquisition
                transaction with WesterFed or its savings bank subsidiary;

        -       any party other than Glacier files a regulatory application to
                acquire WesterFed or its savings bank subsidiary; or

        -       WesterFed willfully breaches any of its obligations in the
                merger agreement in anticipation of engaging in an acquisition
                transaction with another party, and following such breach,
                Glacier becomes entitled to terminate the merger agreement.

For a "Subsequent Triggering Event" to occur, there must be either:

        -       an acquisition by a party other than Glacier of control of 25%
                or more of the voting securities of WesterFed or its savings
                bank subsidiary, or

        -       the sale or lease of a substantial part of the assets or
                deposits of WesterFed or its savings bank subsidiary to a party
                other than Glacier.

        In certain circumstances, Glacier may require WesterFed to repurchase
the option for $4.5 million. In addition, Glacier is not entitled to realize
total profit in connection with the exercise of the option in excess of $4.5
million.

        The stock option agreement provides that the option will terminate upon
the earliest of the following events:

        -       the completion of the merger;

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<PAGE>   53


        -       termination of the merger agreement before an Initial Triggering
                Event (except for a termination by Glacier by reason of
                WesterFed's willful breach of the merger agreement);

        -       15 months after the termination of the merger agreement if such
                termination occurs following an Initial Triggering Event or a
                willful breach of the merger agreement by WesterFed; or

        -       the date on which Glacier's stockholders vote and fail to adopt
                the merger agreement, unless (i) WesterFed is then in material
                default under the merger agreement or (ii) WesterFed's
                stockholders have also voted and failed to adopt the merger
                agreement.

VOTING AGREEMENTS

        The directors and executive officers of Glacier have entered into an
agreement under which they have agreed in their capacity as stockholders of
Glacier to vote their shares of Glacier stock in favor of adoption of the merger
agreement. As of the Glacier special meeting record date, the directors and
executive officers of Glacier beneficially owned a total of 1,641,837
outstanding shares of Glacier stock, which was approximately 14.35% of the
shares outstanding as of that date.

        The directors and executive officers of WesterFed except David W.
Jorgenson have entered into an agreement under which they have agreed, in their
capacity as stockholders of WesterFed, to vote their shares of WesterFed stock
in favor of adoption of the merger agreement. As of the WesterFed special
meeting record date, such directors and executive officers of WesterFed owned
and were entitled to vote a total of ___________ outstanding shares of WesterFed
stock, which was approximately _____% of the shares outstanding as of that date.

AMENDMENT OR TERMINATION OF THE MERGER AGREEMENT

        The merger agreement may be amended by written agreement of the parties,
either before or after it has been adopted by Glacier's and WesterFed's
stockholders. Following adoption of the merger agreement by WesterFed's
stockholders, the merger agreement may not be amended in any manner that would
reduce the amount of, or change the form of, the consideration that WesterFed's
stockholders will receive in the merger, without approval by WesterFed's
stockholders.

        Additionally, Glacier is entitled to change the method of effecting the
merger without the consent of WesterFed, but no such change may alter the kind
and amount of consideration to be issued to WesterFed stockholders, adversely
affect the tax treatment of the merger, materially delay or impede the closing
of the merger, or diminish the benefits to be received by the directors,
officers or employees of WesterFed or its savings bank subsidiary.

        The merger agreement contains several provisions entitling the board of
directors of either Glacier or WesterFed to terminate the merger agreement under
certain circumstances. The following briefly describes some of those
circumstances:

        Lapse of Time. If the merger has not closed by June 30, 2001, then at
any time after that date the boards of directors of either Glacier or WesterFed
may terminate the merger agreement, as long as the failure to close the merger
is not due to a breach by the party seeking termination.

        Mutual Consent. The parties may terminate the merger agreement at any
time before the merger occurs, whether before or after Glacier and WesterFed
stockholder adoption, by mutual consent.

                                       46
<PAGE>   54

        Average Closing Price Less Than $9.00; No Glacier Adjustment. WesterFed
may terminate the merger agreement if the average closing price of Glacier's
common stock for the twenty-day determination period is less than $9.00, and
Glacier in its sole discretion does not elect to increase the merger
consideration to be received by WesterFed stockholders to $19.94 per share. The
manner in which the average closing price is determined and the manner in which
Glacier may increase the merger consideration if it elects to do so are
described above under "--Basic Terms of the Merger."

        As described under "RISK FACTORS," the WesterFed board of directors may
elect to proceed with the merger at a lower price, rather than risk termination
of the merger, if it concludes that such action is in the best interest of its
stockholders and that the merger consideration at the lower price remains fair
to its stockholders from a financial point of view. No additional stockholder
approval is required for the WesterFed board to take this action. By adopting
the merger agreement, the WesterFed stockholders will vest the WesterFed board
with the power to make this decision.

        Average Closing Price Less Than $7.50. Glacier may terminate the merger
agreement if the average closing price of its common stock for the twenty-day
determination period is less than $7.50.

        Conditions to Closing Not Met. Either Glacier or WesterFed may terminate
the merger agreement if, by June 30, 2001, any of the other party's conditions
to closing are not met. Those conditions to closing are described below under
"--Conditions to Consummation of the Merger."

PAYMENT OF LIQUIDATED DAMAGES UPON TERMINATION IN CERTAIN CIRCUMSTANCES

        Glacier. The merger agreement provides that if (a) if a proposal is made
to (i) engage in a merger or similar transaction with Glacier or any of its bank
subsidiaries that is not permitted under the merger agreement, (ii) acquire
substantially all of the assets of Glacier or any of its banking subsidiaries,
or (iii) purchase more than 19.9% of the voting securities of Glacier or any of
its bank subsidiaries, and thereafter Glacier's stockholders fail to adopt the
merger agreement, or (b) WesterFed terminates the merger agreement because
Glacier's board of directors fails to recommend adoption of the merger agreement
to Glacier's stockholders, then Glacier will be required to pay to WesterFed the
amount of $3.5 million as liquidated damages.

        Such liquidated damages will not be payable if Glacier terminates, or
has the right to terminate, the merger agreement because WesterFed's conditions
to closing have not been met by June 30, 2001 (solely on account of the willful
breach of WesterFed); or because WesterFed's board of directors has failed to
recommend to its stockholders that the merger agreement be adopted; or if
WesterFed's stockholders do not adopt the merger agreement at the WesterFed
special meeting.

        WesterFed. The merger agreement provides that if WesterFed's board of
directors fails to recommend to its stockholders that they adopt the merger
agreement, or if WesterFed's stockholders fail to adopt the merger agreement
following WesterFed's receipt of an acquisition proposal from a third party,
WesterFed will be required to pay to Glacier the amount of $4.5 million as
liquidated damages.

        Such liquidated damages will not be payable if Glacier has acquired
WesterFed common stock under the terms of the stock option agreement (see
"--Stock Option Agreement" above), or if WesterFed has repurchased the option
granted by such agreement. Additionally, the liquidated damages will not be
payable if WesterFed terminates, or has the right to terminate, the merger
agreement because Glacier's conditions to closing have not been met by June 30,
2001 (solely on account of the willful breach of Glacier); or because Glacier's
board of directors has failed to recommend to its stockholders that the

                                       47
<PAGE>   55

merger agreement be adopted; or if the Glacier stockholders do not adopt the
merger agreement at the Glacier special meeting.

CONDITIONS TO CONSUMMATION OF THE MERGER

        Consummation of the merger is subject to various conditions. No
assurance can be provided as to whether these conditions will be satisfied or
waived by the appropriate party. Accordingly, there can be no assurance that the
merger will be completed.

        Under Delaware law, approval of the merger requires the affirmative vote
of the holders of a majority of the outstanding stock of Glacier and WesterFed.
In addition, the Federal Reserve Board must approve the merger. Application for
prior approval by the Federal Reserve Board has been filed. Although no
assurance can be given, the parties expect to receive this approval in due
course.

        Certain conditions must be satisfied or events must occur before the
parties will be obligated to complete the merger. Each party's obligations under
the merger agreement are conditioned on satisfaction by the other party of
conditions applicable to it. The conditions include the following:

        -       Glacier's receipt of an opinion from Graham & Dunn, P.C. to the
                effect that, among other things, the merger will qualify as a
                tax-free reorganization under Section 368(a)(1)(A) of the
                Internal Revenue Code, and WesterFed's receipt of a similar
                opinion from Silver, Freedman & Taff, L.L.P.; and

        -       The compliance by each party with all of the material terms,
                covenants and conditions of the merger agreement.

        Either Glacier or WesterFed may waive any of the other party's
conditions, except those that are required by law (such as receipt of all
required regulatory approvals and the approval of Glacier and WesterFed
stockholders). Either Glacier or WesterFed may also grant extended time to the
other party to complete an obligation or condition.

CONDUCT OF BUSINESS PENDING THE MERGER

        WesterFed has agreed in the merger agreement not to take, and will not
permit its subsidiaries to take, certain actions without the prior approval of
Glacier relating to their operations pending consummation of the merger. Among
other things, each of WesterFed and its subsidiaries may not:

        -       issue, pledge or encumber any shares of its stock or the stock
                of any subsidiary, except pursuant to stock issued on the
                exercise of previously granted stock options;

        -       grant any new rights to acquire shares of its stock;

        -       declare or pay any dividends on WesterFed shares, other than
                regular quarterly cash dividends on its stock and a bonus
                dividend not to exceed $325,000 to be declared in December 2000;

        -       acquire, sell, encumber or dispose of assets other than in the
                ordinary course of business;

        -       change its lending policies in any material respect;

                                       48
<PAGE>   56


        -       subject to the exercise of the board's fiduciary duties, enter
                into or recommend the adoption by WesterFed's stockholders of
                any agreement involving a possible merger or other business
                combination or asset sale except the merger with Glacier;

        -       enter into or renew contracts with a term of one year or more,
                excluding contracts of deposit and agreements to lend money
                entered into in the ordinary course of business;

        -       enter into or amend any contract, with specified exceptions,
                calling for a payment of more than $100,000, unless terminable
                without penalty upon not more than 30 days' notice;

        -       enter into any personal services contracts except specified
                types of contracts related to the merger;

        -       sell securities other than in the ordinary course of business,
                or sell any securities even in the ordinary course of business
                if the aggregate gain from all sales after the date of the
                merger agreement would be more than $100,000;

        -       amend its certificate of incorporation, bylaws or other
                formation documents;

        -       implement or adopt any material changes in its operations,
                policies or procedures unless requested by Glacier or unless
                they are determined to be necessary or advisable to comply with
                applicable laws or regulations;

        -       implement or adopt changes in accounting principles, with
                specified exceptions; or

        -       enter into any other transaction or make any expenditure other
                than in the ordinary course of business and consistent with past
                practices, excepting the merger and specified fees incurred in
                connection with the merger.

DIRECTORS AND EXECUTIVE OFFICERS AFTER THE MERGER

        The persons serving as directors and executive officers of Glacier
immediately prior to the merger will continue to serve in such capacities
following the merger, except that Ralph Holliday, President and Chief Executive
Officer of WesterFed, will join the Glacier board of directors.

        Following the merger, the board of directors of Western Security Bank
will be composed of Ralph Holliday, President and Chief Executive Officer of
Western Security Bank; James Salisbury, Executive Vice President, Treasurer and
Chief Financial Officer of Western Security Bank; Michael Blodnick, President
and Chief Executive Officer of Glacier; William Bouchee, President and Chief
Executive Officer of First Security Bank of Missoula; and James Strosahl, Chief
Financial Officer of Glacier.

        Following the merger Mr. Holliday will continue as the President and
Chief Executive Officer of Western Security Bank, and Mr. Salisbury will
continue as Executive Vice President, Treasurer and Chief Financial Officer.
Glacier and Western Security Bank have entered into employment agreements with
Messrs. Holliday and Salisbury, and with other Western Security Bank officers
who will continue at Western Security Bank following the merger. These
employment agreements will go into effect upon completion of the merger and are
described below under "--Interests of Certain Persons in the Merger."

                                       49
<PAGE>   57


EMPLOYEE BENEFIT PLANS; STOCK OPTION PLANS

        The merger agreement confirms Glacier's intention to allow the employees
of WesterFed and its subsidiaries who continue as Glacier employees after the
merger to participate in certain Glacier employee benefit plans, on
substantially the same terms as other employees of Glacier and its subsidiaries.
For the purposes of determining eligibility to participate in such plans, and
the vesting of benefits under such plans (but not the accrual of benefits under
certain plans) Glacier will give effect to years of service with WesterFed or
its subsidiaries (including predecessor entities) as though such service was
with Glacier.

        On the merger effective date, all outstanding and unexercised director
and employee options to purchase WesterFed shares will be converted into options
to purchase Glacier stock, adjusted as to both number of shares and price using
the final exchange ratio described under "--Basic Terms of the Merger" above.

INTERESTS OF CERTAIN PERSONS IN THE MERGER

        The directors and executive officers of WesterFed, together with their
affiliates, beneficially owned a total of ___________ shares of WesterFed stock
(representing approximately ____% of all outstanding shares of WesterFed stock)
as of the WesterFed special meeting record date. The directors and executive
officers will receive the same consideration in the merger for their shares,
including any shares which they may acquire prior to the merger completion date
pursuant to the exercise of stock options, as the other stockholders of
WesterFed. Certain members of WesterFed's management and the WesterFed board of
directors have certain interests in the merger as described below that are in
addition to their interest as stockholders of WesterFed generally. WesterFed's
board of directors was aware of these interests and considered them, among other
matters, in approving the merger agreement and the merger.

        Directors' and Officers' Liability. The merger agreement provides that
for a period of six years following the completion of the merger, Glacier will
indemnify the present and former directors, officers and employees of WesterFed
and its subsidiaries against certain liabilities to the extent that such persons
were entitled to indemnification by law, or under the certificate of
incorporation, charter or bylaws of WesterFed or its savings bank subsidiary.

        Employment Agreements. The following officers of WesterFed and/or its
savings bank subsidiary have entered into employment agreements, which will
become effective upon the closing of the merger, with Glacier and WesterFed's
savings bank subsidiary.

        Ralph K. Holliday Employment Agreement. Glacier and WesterFed's savings
bank subsidiary have entered into an employment agreement with Ralph Holliday,
which will become effective upon completion of the merger. Mr. Holliday is the
President and Chief Executive Officer of WesterFed and its savings bank
subsidiary. Pursuant to the employment agreement, he will serve as a member of
the Glacier transition team, reporting directly to Glacier's Chief Executive
Officer. He will also continue to serve as President and Chief Executive Officer
of WesterFed's savings bank subsidiary. The employment agreement is for an
initial term of one year, and may be extended by Glacier for up to an additional
six months. Mr. Holliday's initial annual salary will be not less than $220,000,
plus a $75,000 signing bonus.

        The agreement provides that if the employer terminates Mr. Holliday's
employment without cause (as defined in the agreement) or if Mr. Holliday
terminates his employment for good reason (as defined in the agreement), Mr.
Holliday will be entitled to receive his salary, bonuses, benefits and

                                       50
<PAGE>   58

vesting under all health, welfare, employee and qualified and nonqualified plans
as if he had continued to be employed during the balance of the term of the
employment agreement.

        The agreement acknowledges that due to the merger Mr. Holliday is
entitled to receive a change of control payment in an amount equal to 299% of
his "base amount" as defined under applicable sections of the Internal Revenue
Code, subject to certain limitations. Glacier agrees to pay Mr. Holliday the
change of control payment on the earlier of the first anniversary of the
completion of the merger, or the date of termination of employment.

        The employment agreement provides that Mr. Holliday will not engage in a
business competitive with Glacier or its savings bank subsidiaries in Montana
for one year following his termination of employment. As consideration for his
promise not to compete, Glacier will pay Mr. Holliday a single payment on the
date of his termination of employment. The amount of the payment would be $1,000
if Mr. Holliday voluntarily terminates his employment without good reason; no
payment if he dies while employed or his employment is terminated due to
disability of for cause; and if he terminates his employment with good reason,
or his employment is terminated by the employer other than due to death or
disability or for cause, the payment would be $24,000 if his employment
terminates before April 19, 2001; $30,000 if his employment terminates on or
after April 19, 2001 but before April 19, 2002; or $1,000 if his employment
terminates on or after April 19, 2002.

        James A. Salisbury Employment Agreement. Glacier and WesterFed's savings
bank subsidiary have entered into an employment agreement with James Salisbury,
which will become effective upon completion of the merger. Mr. Salisbury is the
Executive Vice President, Treasurer and Chief Financial Officer of WesterFed and
its savings bank subsidiary. Pursuant to the employment agreement, he will serve
as a member of the Glacier transition team. He will also continue to serve as
Executive Vice President, Treasurer, and Chief Financial Officer of WesterFed's
savings bank subsidiary. The employment agreement is for an initial term of one
year, and may be extended by Glacier for up to an additional six months. Mr.
Salisbury's initial annual salary will be not less than $140,000, plus a $13,000
signing bonus.

        The agreement provides that if the employer terminates Mr. Salisbury's
employment without cause or if Mr. Salisbury terminates his employment for good
reason, Mr. Salisbury will be entitled to his salary, bonuses, benefits and
vesting under all health, welfare, employee and qualified and nonqualified plans
as if he had continued to be employed during the balance of the term of the
employment agreement.

        The agreement acknowledges that due to the merger Mr. Salisbury is
entitled to receive a change of control payment in an amount equal to 299% of
his "base amount" as defined under applicable sections of the Internal Revenue
Code, subject to certain limitations. Glacier agrees to pay Mr. Salisbury the
change of control payment on the earlier of the first anniversary of the
completion of the merger, or the date of termination of employment.

        Employment Agreements with Other Officers of WesterFed's Savings Bank
Subsidiary. Glacier and WesterFed's savings bank subsidiary have entered into
employment agreements with three senior officers of WesterFed's savings bank
subsidiary, which will become effective upon the completion of the merger. Each
such officer will continue to be paid his or her current base salary and retain
his or her title as a Senior Vice President of the savings bank. Each of these
employment agreements is also for an initial term of one year, and may be
extended by Glacier for up to an additional six months.

        Each employment agreement provides that if the employer terminates the
employee's employment without cause or if the employee terminates his or her
employment for good reason, the

                                       51
<PAGE>   59

terminated employee will be entitled to salary, bonuses, benefits and vesting
under all health, welfare, employee and qualified and nonqualified plans as if
such person had continued to be employed during the balance of the term of the
employment agreement.

        Each employment agreement acknowledges that due to the merger the
employee is entitled to receive a change of control payment in an amount equal
to 200% of his or her "base amount" as defined under applicable sections of the
Internal Revenue Code, subject to certain limitations. Glacier has agreed to pay
these change of control payments on the earlier of the first anniversary of the
completion of the merger, or the date of termination of employment.

MATERIAL UNITED STATES FEDERAL INCOME TAX CONSEQUENCES

        The following discussion summarizes the material United States federal
income tax consequences of the merger to United States persons who hold
WesterFed shares as capital assets within the meaning of the Internal Revenue
Code, and participate in the merger transaction. It does not purport to be a
complete analysis or description of all potential federal income tax
consequences of the merger. The discussion does not address tax consequences
that may vary with, or are contingent on, individual circumstances. In addition,
it does not discuss the tax consequences that might be relevant to WesterFed
stockholders subject to special treatment under United States federal income tax
law such as:

        -       dealers or brokers in securities;

        -       tax-exempt entities;

        -       financial institutions;

        -       insurance companies;

        -       foreign persons;

        -       persons that hold WesterFed shares as part of a straddle, a
                hedge against currency risk, a constructive sale or conversion
                transaction; and

        -       holders who acquired WesterFed shares through the exercise or
                cancellation of employee stock options or as compensation
                through other means.

        Further, this discussion does not address any non-income tax
considerations or describe any tax consequences arising out of the tax laws of
any state, local or foreign jurisdiction. This discussion is based on the
Internal Revenue Code and regulations promulgated thereunder, applicable
administrative rulings and judicial precedent currently in effect, and on
certain factual assumptions. There can be no assurance that there will not be
changes in the legal authorities on which this discussion is based (which
changes could be retroactive), or that there will not be a change in the facts
or the validity of the factual assumptions underlying this discussion, that
could alter or modify the statements and conclusions below and could affect the
tax consequences of the merger.

        Neither Glacier nor WesterFed plans to obtain any rulings from the
Internal Revenue Service concerning tax issues with respect to the merger.
However, consummation of the merger is conditioned upon, among other things,
each of WesterFed and Glacier receiving an opinion of its tax counsel on the
date the merger is completed. Silver, Freedman & Taff, L.L.P. is acting as tax
counsel to WesterFed. Graham & Dunn PC is acting as tax counsel to Glacier.
Neither party currently intends to waive receipt

                                       52
<PAGE>   60

of an opinion from its tax counsel as a condition to consummation of the merger.
However, if either party should make a determination to waive this condition and
will not receive an opinion from its tax counsel on the date the merger is
completed, each party will circulate a revised proxy statement and resolicit
proxies to adopt the merger agreement. The opinions of tax counsel will be dated
as of the date the merger is completed and will be based on the U.S. federal
income tax laws in effect as of that date. The opinions will state that, on the
basis of the facts, certain customary representations to be made by WesterFed
and Glacier, and assumptions set forth in the opinions:

        -       the merger will be treated for federal income tax purposes as a
                reorganization within the meaning of Section 368(a) of the
                Internal Revenue Code; and

        -       Glacier and WesterFed will each be a party to the reorganization
                within the meaning of Section 368(b) of the Internal Revenue
                Code.

        An opinion of tax counsel represents counsel's legal judgment, but has
no binding effect or official status of any kind. The Internal Revenue Service
may assert contrary positions. Moreover, contrary positions may be adopted by a
court, if the positions are litigated.

        In order for WesterFed and Glacier to receive the opinions of their tax
counsel, the WesterFed stockholders must receive in the merger a significant
continuing ownership interest in Glacier in the form of Glacier stock. Based
upon the allocation procedures set forth in the merger agreement which precludes
the cash component of the merger consideration from exceeding 55% of the total
value of the merger consideration on the date the merger is completed, the
portion of the merger consideration consisting of Glacier stock (in relation to
the portion consisting of cash) should qualify as a significant continuing
ownership interest within the meaning of existing legal precedents.

        Assuming the opinions of Silver, Freedman & Taff, L.L.P. and Graham &
Dunn PC are rendered to WesterFed and Glacier, respectively, the material United
States federal income tax consequences of the merger to the WesterFed
stockholders are expected to be as follows:

        -       WesterFed Stockholders Receiving Only Glacier Stock. If you
                receive only Glacier stock in the merger, you will not recognize
                gain or loss on the conversion of your WesterFed shares into
                shares of Glacier stock pursuant to the terms of the merger,
                except to the extent that you receive cash in lieu of a
                fractional share. If you receive cash in lieu of a fractional
                share of Glacier stock, you will recognize gain or loss equal to
                the difference between the cash you receive and the part of the
                basis of your WesterFed shares allocated to your fractional
                share interest. Any such gain or loss will generally be a
                capital gain or loss.

        -       your tax basis in the Glacier stock you receive will be the same
                as the tax basis of the shares of WesterFed shares you surrender
                in the merger, less any proportionate part of your basis
                allocable to any fractional share interest in Glacier stock for
                which you receive cash. Your holding period for the Glacier
                stock you receive will include the holding period of the
                WesterFed shares you surrender in the merger.

        -       WesterFed Stockholders Receiving Both Glacier Stock and Cash.
                You may receive both Glacier stock and cash in exchange for your
                WesterFed stock if you elect to receive cash for only part of
                your WesterFed stock and elect to receive Glacier stock for the
                remainder, or if you elect to receive solely cash or solely
                Glacier stock and the amount of cash or Glacier stock is subject
                to proration. If you fall into this category:

                                       53
<PAGE>   61

        -       you will recognize gain, if any, in an amount equal to the
                lesser of

                --      the excess of the consideration you receive, including
                        both the fair market value of the Glacier stock and
                        cash, over the basis of the WesterFed shares you
                        surrender in the merger, or

                --      the amount of cash you receive.

        -       you will not recognize any loss.

        -       your basis in the Glacier stock you receive will be equal to the
                basis of the WesterFed shares you surrender in the merger,
                decreased by the amount of cash you receive, and increased by
                the amount of gain, if any, you recognize, including any amount
                of gain treated as a dividend as described below.

        -       your holding period for the Glacier stock you receive will
                include the holding period of the WesterFed shares you surrender
                in the merger.

        If you own both WesterFed shares and Glacier stock or own blocks of
WesterFed shares with different tax bases, you are urged to consult your own tax
advisor with respect to the application of the foregoing rules to your
particular situation.

        If you recognize any gain by virtue of the rules described above, you
will need to know whether the character of that gain is capital or ordinary. Any
gain you recognize will be treated as capital gain unless the receipt of the
cash has the effect of the distribution of a dividend to you under Section 302
of the Internal Revenue Code, as described below. Capital gain may be subject to
preferential tax rates in the case of individuals. Your capital gain will
constitute long-term capital gain if you held the WesterFed shares for more than
one year prior to the completion of the merger.

        Any gain that you recognize should avoid being treated as a dividend
under Section 302 of the Internal Revenue Code provided:

        -       the percentage of the outstanding Glacier stock you own both
                actually and under the constructive ownership rules of Section
                318 of the Internal Revenue Code, measured after giving effect
                to the merger, is less than 80% of the percentage of the
                outstanding Glacier stock that would have been owned actually
                and constructively by you after the merger if Glacier had issued
                solely common stock in the merger and none of the merger
                consideration had been paid in cash, or

        -       your relative stock interest in Glacier is minimal, you exercise
                no control over the affairs of Glacier, and the percentage of
                the outstanding Glacier stock you own both actually and under
                the constructive ownership rules of Section 318 of the Internal
                Revenue Code, measured after giving effect to the merger, is
                less (by even a small margin) than the percentage of the
                outstanding Glacier stock that would have been owned actually
                and constructively by you after the merger if Glacier had issued
                solely common stock in the merger and none of the merger
                consideration had been paid in cash.

        The constructive ownership rules of Section 318 of the Internal Revenue
Code, mentioned above, treat you as owning:

                                       54
<PAGE>   62

        -       stock owned by certain family members,

        -       stock owned by certain entities in which you have an interest,
                and

        -       stock that could be acquired by you by the exercise of an option
                or conversion right.

        Similarly, an entity may be deemed to own stock that is actually owned
by persons who have an interest in the entity, such as stockholders, partners or
beneficiaries.

        If your receipt of cash has the effect of the distribution of a dividend
under the foregoing rules, recognized gain will be treated as a dividend taxable
at ordinary income rates only to the extent of your ratable share of the
undistributed earnings and profits immediately prior to completion of the
merger.

        WesterFed Stockholders Receiving Only Cash. If you receive solely cash
in exchange for your WesterFed shares, you will be treated as receiving a
distribution in redemption of your shares. If you fall into this category, the
cash you receive will generally be treated as a distribution in full payment in
exchange for your WesterFed shares, and you will recognize gain or loss equal to
the difference between the amount of cash you receive and the basis in the
WesterFed shares you surrender. Such gain or loss will be capital gain or loss
and will be long-term capital gain or loss if such stock was held for more than
one year prior to the date of the merger. However, if you are not treated as
completely terminating your interest because of the application of the
constructive ownership rules of Section 318 of the Internal Revenue Code
(described above), under certain circumstances the full amount of the cash you
receive may be treated as a dividend taxable at ordinary income rates to the
extent of the undistributed earnings and profits immediately prior to the
completion of the merger, under Section 302 of the Internal Revenue Code (see
discussion above).

        Reporting Requirements and Backup Withholding. Each WesterFed
stockholder receiving Glacier stock as a result of the merger will be required
to retain records and file with the stockholder's federal income tax return a
statement containing facts relating to the merger.

        Backup withholding at a 31% rate may apply with respect to payments
received in the merger unless the recipient (i) is a corporation or comes within
certain other exempt categories and, when required, demonstrates this fact or
(ii) provides a correct taxpayer identification number, certifies as to no loss
of exemption from backup withholding and otherwise complies with applicable
requirements of the backup withholding rules. A stockholder who does not provide
his or her correct taxpayer identification number may have to pay penalties
imposed by the Internal Revenue Service. Any amounts withheld under the backup
withholding rules may be allowed as a refund or a credit against the
stockholder's federal income tax liability provided that any required
information is furnished to the Internal Revenue Service.

        Because the foregoing discussion does not address foreign, state, or
local taxation and does not deal with all aspects of federal taxation, and the
tax consequences will not be the same for all WesterFed stockholders, you should
consult your own tax advisor as to the specific tax consequences to you of the
merger, including tax return reporting requirements, the applicability and
effect of foreign, state, local and other tax laws and the possible effect of
any proposed changes in the tax law.

ACCOUNTING TREATMENT OF THE MERGER

        It is anticipated that the merger will be accounted for using the
purchase method of accounting by Glacier under accounting principles generally
accepted in the United States of America. Accordingly,

                                       55
<PAGE>   63

using the purchase method of accounting, the assets and liabilities of WesterFed
will be recorded by Glacier at their respective fair values at the time of the
completion of the merger. The excess of Glacier's purchase price over the net
fair value of the assets acquired and liabilities assumed, including
identifiable intangible assets, is recorded as goodwill and amortized as an
expense. Under the purchase method of accounting, prior period financial
statements are not restated and the consolidated results of operations of
WesterFed will be included in Glacier's consolidated statement of operations
after the completion of the merger.

DISSENTER'S RIGHTS OF APPRAISAL

        Pursuant to Section 262 of the Delaware General Corporation Law, any
WesterFed stockholder may dissent from the merger and elect to have the fair
value of his or her shares judicially determined and paid in cash, but only if
such stockholder complies with the provisions of Section 262. Dissenters' rights
of appraisal are not available to Glacier stockholders.

        The following is a brief summary of the statutory procedures to be
followed by WesterFed stockholders in order to perfect appraisal rights under
Delaware law. THIS SUMMARY IS NOT INTENDED TO BE COMPLETE AND IS QUALIFIED IN
ITS ENTIRETY BY REFERENCE TO SECTION 262 OF THE DELAWARE GENERAL CORPORATION
LAW, A COPY OF WHICH IS ATTACHED AS APPENDIX B TO THIS DOCUMENT.

        To dissent from the merger and demand appraisal, a stockholder must
satisfy the following conditions:

        -       deliver a written demand for appraisal to WesterFed before the
                vote on the adoption of the merger agreement;

        -       not vote in favor of the merger agreement (the return of a
                signed proxy which does not specify a vote against the merger
                agreement or a direction to abstain, will constitute a waiver of
                such stockholder's right of appraisal); and

        -       continuously hold the WesterFed shares from the date of the
                making of the demand through the time the merger is completed.

        If a stockholder fails to comply with any of these conditions and the
merger becomes effective, he or she will only be entitled to receive the
consideration provided in the merger agreement. Failure to vote on the merger
agreement will not constitute a waiver of your appraisal rights. Voting against
the merger agreement will not satisfy the requirement of a written demand for
appraisal.

        All written demands for appraisal should be addressed to: WesterFed
Financial Corporation, 110 East Broadway, Missoula, Montana 59802, Attention:
Marcia L. Johnson, Secretary, before the vote concerning the merger agreement at
the WesterFed special meeting, and should be executed by, or on behalf of, the
holder of record. If WesterFed shares are owned of record in a fiduciary
capacity, as by a trustee, guardian or custodian, execution of a demand for
appraisal should be made in such capacity. If WesterFed shares are owned of
record by more than one person, as in a joint tenancy or tenancy in common, such
demand must be executed by or for all joint owners. An authorized agent,
including one for two or more joint owners, may execute the demand for appraisal
for a stockholder of record; however, the agent must identify the record owner
or owners and expressly disclose the fact that, in executing the demand, he or
she is acting as agent for the record owner. A record owner, such as a broker,
who holds WesterFed shares as a nominee for others may exercise his or her
rights of appraisal with respect to the shares held for one or more beneficial
owners, while not exercising such right for

                                       56
<PAGE>   64

other beneficial owners. In such case, the written demand should set forth the
number of shares as to which the record owner dissents. Where no number of
shares is expressly mentioned, the demand will be presumed to cover all shares
of WesterFed shares in the name of such record owner.

        Within 10 days after the merger, Glacier must give written notice that
the merger has become effective to each stockholder of WesterFed shares who
filed a written demand for appraisal and who did not vote in favor of the merger
agreement. Any stockholder entitled to appraisal rights may, within 20 days
after the date of mailing of the notice, demand in writing from Glacier the
appraisal of his or her WesterFed shares. Within 120 days after the completion
of the merger, either Glacier, or any WesterFed stockholder who has complied
with Section 262, may file a petition in the Delaware Court of Chancery
demanding a determination of the value of the WesterFed shares held by all
stockholders entitled to appraisal of their shares. Glacier does not presently
intend to file such a petition. Inasmuch as Glacier has no obligation to file
such a petition, the failure of a stockholder to do so within the period
specified could nullify such stockholder's previous written demand for
appraisal.

        If a petition for appraisal is duly filed by a stockholder and a copy is
delivered to Glacier, Glacier will then be obligated within 20 days of receipt
of such copy to provide the Court of Chancery with a duly verified list
containing the names and addresses of all stockholders who have demanded an
appraisal of their shares and with whom agreement as to the value of such shares
has not been reached. After notice to such stockholders, the Court of Chancery
is empowered to conduct a hearing to determine those stockholders who have
complied with Section 262 and who have become entitled to appraisal rights.

        The Court of Chancery will then appraise the WesterFed shares,
determining their fair value exclusive of any element of value arising from the
accomplishment or expectation of the merger. When the value is determined, the
Court will direct the payment by Glacier of such value, with interest thereon,
simple or compound, if the Court so determines, to the stockholders entitled to
receive the same.

        Stockholders of WesterFed who are considering seeking an appraisal
should bear in mind that the fair value of their WesterFed shares determined
under Section 262 could be more than, the same as or less than the consideration
they are to receive pursuant to the merger agreement if they do not seek
appraisal of their shares.

        Costs of the appraisal proceeding may be assessed against the
stockholder by the court as the court deems equitable in the circumstances.

        FAILURE TO COMPLY STRICTLY WITH THESE PROCEDURES WILL CAUSE THE
STOCKHOLDER TO LOSE HIS OR HER APPRAISAL RIGHTS. CONSEQUENTLY, ANY STOCKHOLDER
WHO DESIRES TO EXERCISE HIS OR HER APPRAISAL RIGHTS IS URGED TO CONSULT A LEGAL
ADVISOR BEFORE ATTEMPTING TO EXERCISE SUCH RIGHTS.

RESALE OF GLACIER STOCK

        The Glacier stock to be issued in the merger will be transferable free
of restrictions under the Securities Act of 1933, as amended, except for shares
received by persons, including directors and executive officers of WesterFed,
who may be deemed to be "affiliates" of WesterFed, as that term is used in
paragraphs (c) and (d) of Rule 145 under the Securities Act of 1933. Affiliates
may not sell their shares of Glacier stock acquired in the merger, except (a)
pursuant to an effective registration statement under the Securities Act of 1933
covering those shares, (b) in compliance with Rule 145, or (c) in accordance
with an opinion of counsel reasonably satisfactory to Glacier, under other
applicable exemptions from the registration requirements of the Securities Act
of 1933. WesterFed will use its best efforts to obtain from each of its
affiliates a letter agreement under which such person will represent that

                                       57
<PAGE>   65

he or she will not dispose of shares of Glacier common stock received in the
merger, except in compliance with the Securities Act of 1933, and the rules and
regulations promulgated thereunder. This document does not cover any resales of
the Glacier common stock received by affiliates of WesterFed in the merger.

NO SOLICITATION

        WesterFed has agreed in the merger agreement that neither it nor its
savings bank subsidiary will solicit, initiate or encourage inquiries or
proposals with respect to or, except as required by the fiduciary duties of the
WesterFed board of directors, furnish any nonpublic information relating to or
participate in any negotiations concerning, any acquisition or purchase of all
or a substantial portion of the assets of, or a substantial equity interest in,
WesterFed or any of its subsidiaries or any merger or other business combination
with WesterFed or any of its subsidiaries.

                                       58
<PAGE>   66

                          UNAUDITED COMBINED CONDENSED
                         PRO FORMA FINANCIAL STATEMENTS

        The following unaudited combined condensed pro forma financial
statements give effect to the merger of Glacier and WesterFed, and to the
anticipated effects of Glacier's acquisition of certain Wells Fargo/First
Security branches in Idaho and Utah, as described under "BUSINESSES OF THE
PARTIES TO THE MERGER - Information Concerning Glacier - Proposed Glacier Branch
Acquisitions." Both the merger and the branch acquisitions are presented on a
purchase accounting basis.

        The unaudited pro forma combined balance sheet combines the historical
consolidated balance sheets of Glacier and WesterFed, and the anticipated
effects of the branch acquisitions, as if the merger and the branch acquisitions
had become effective on September 30, 2000.

        The unaudited pro forma combined statements of operations for the nine
months ended September 30, 2000 and the year ended December 31, 1999 combines
the historical consolidated statements of operations of Glacier and WesterFed,
and the anticipated effects of the branch acquisitions, as if the merger and the
branch acquisitions had become effective on January 1, 1999.

        These unaudited combined condensed pro forma financial statements should
be read in conjunction with the historical financial statements and the related
notes thereto for Glacier and WesterFed incorporated into this prospectus/joint
proxy statement by reference. See "AVAILABLE INFORMATION" and "INCORPORATION OF
CERTAIN DOCUMENTS BY REFERENCE."

        The unaudited combined condensed pro forma statements of operations 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 results.

                                       59
<PAGE>   67
UNAUDITED PRO FORMA COMBINED CONDENSED STATEMENT OF FINANCIAL CONDITION
AS OF SEPTEMBER 30, 2000
<TABLE>
<CAPTION>

---------------------------------------------------------------    Glacier                              Pro forma
(amounts in thousands except per share data)                     Bancorp, Inc.       WesterFed         Adjustments (1)
---------------------------------------------------------------  -------------      -----------       ------------
<S>                                                              <C>                <C>               <C>
ASSETS
Cash on hand and in banks .....................................   $    33,700            15,289                 --
Interest bearing cash deposits ................................         4,255             1,338                 --
                                                                  -----------       -----------        -----------
      Cash and cash equivalents ...............................        37,955            16,627                 --

Investments
      Investment securities, held-to-maturity .................            --            75,980                357 (c)
      Investment securities, available-for-sale ...............       203,849           145,020            (28,692)(b)
                                                                  -----------       -----------        -----------
           Total Investments ..................................       203,849           221,000            (28,335)

Loans receivable ..............................................       730,834           628,176            (12,513)(c)
Allowance for losses ..........................................        (7,808)           (6,225)                --
                                                                  -----------       -----------        -----------
           Total Loans, net ...................................       723,026           621,951            (12,513)

Premises and equipment, net ...................................        25,005            25,118              2,000 (c)
Real estate and other assets owned ............................            97               272                 --
Federal Home Loan Bank of Seattle stock, at cost ..............        16,146            12,852                 --
Federal Reserve stock, at cost ................................         1,639                --                 --
Accrued interest receivable ...................................         6,233             7,284                 --
Core deposit intangible .......................................         1,597             2,961             10,914 (c)
Goodwill ......................................................         5,031            14,264            (14,264)(c)
                                                                                                            20,408 (c)
Deferred income taxes .........................................         1,512                --             (1,512)
Other assets ..................................................         3,951            10,680              1,721 (c)
                                                                  -----------       -----------        -----------
      Total assets ............................................   $ 1,026,041           933,009            (21,581)
                                                                  ===========       ===========        ===========

LIABILITIES AND STOCKHOLDERS' EQUITY
Deposits - non-interest bearing ...............................   $   152,022            40,085                 --
Deposits - interest bearing ...................................       564,965           569,028             (2,555)(c)
Advances from Federal Home Loan Bank of Seattle ...............       177,909           203,558             (2,478)(c)
Securities sold under agreements to repurchase ................        20,699             8,753                 --
Other borrowed funds ..........................................         7,985               202                 --
Accrued interest payable ......................................         3,387             8,069                 --
Current income taxes ..........................................           941               729                 --
Deferred income taxes .........................................            --               817              1,009 (c)
                                                                                                            (1,512)
Other liabilities .............................................         5,970             9,777              4,925 (c)
Minority Interest .............................................           325                --                 --
                                                                  -----------       -----------        -----------
      Total liabilities .......................................       934,203           841,018               (611)
                                                                  -----------       -----------        -----------

Trust preferred securities ....................................            --                --             15,000 (e)

Common stock, $.01 par value per share ........................           114                57                (57)(a)
                                                                                                                45 (b)
Paid-in capital ...............................................       101,756            71,017            (71,017)(a)
                                                                                                            55,976 (b)
Common stock acquired by ESOP/RRP .............................            --            (1,892)             1,892 (a)
Treasury stock, at cost .......................................            --           (33,537)            33,537 (a)
Retained earnings - substantially restricted ..................        (6,057)           57,875            (57,875)(a)
Accumulated other comprehensive loss ..........................        (3,975)           (1,529)             1,529 (a)
                                                                  -----------       -----------        -----------
      Total stockholders' equity ..............................        91,838            91,991            (35,970)
                                                                  -----------       -----------        -----------
             Total liabilities and stockholders' equity .......   $ 1,026,041           933,009            (21,581)
                                                                  ===========       ===========        ===========


                                                                                                         Glacier
                                                                  Glacier and                         Bancorp, Inc.
                                                                   WesterFed        Idaho/Utah            after
                                                                   Combined          Branches   (1)   acquisitions
                                                                  -----------       -----------     ----------------
<S>                                                               <C>               <C>             <C>
ASSETS
Cash on hand and in banks .....................................        48,989             4,156            53,145
Interest bearing cash deposits ................................         5,593            20,000 (e)        25,593
                                                                  -----------       -----------       -----------
      Cash and cash equivalents ...............................        54,582            24,156            78,738

Investments
      Investment securities, held-to-maturity .................        76,337                --            76,337
      Investment securities, available-for-sale ...............       320,177           105,490           425,667
                                                                  -----------       -----------       -----------
           Total Investments ..................................       396,514           105,490           502,004

Loans receivable ..............................................     1,346,497            51,714         1,398,211
Allowance for losses ..........................................       (14,033)             (517)          (14,550)
                                                                  -----------       -----------       -----------
           Total Loans, net ...................................     1,332,464            51,197         1,383,661

Premises and equipment, net ...................................        52,123             5,657            57,780
Real estate and other assets owned ............................           369                --               369
Federal Home Loan Bank of Seattle stock, at cost ..............        28,998                --            28,998
Federal Reserve stock, at cost ................................         1,639                --             1,639
Accrued interest receivable ...................................        13,517                --            13,517
Core deposit intangible .......................................        15,472             4,682 (d)        20,154
Goodwill ......................................................        25,439            16,083 (d)        41,522

Deferred income taxes .........................................            --                --                --
Other assets ..................................................        16,352                --            16,352
                                                                  -----------       -----------       -----------
      Total assets ............................................     1,937,469           207,265         2,144,734
                                                                  ===========       ===========       ===========

LIABILITIES AND STOCKHOLDERS' EQUITY
Deposits - non-interest bearing ...............................       192,107            30,519           222,626
Deposits - interest bearing ...................................     1,131,438           156,323         1,287,761
Advances from Federal Home Loan Bank of Seattle ...............       378,989                --           378,989
Securities sold under agreements to repurchase ................        29,452                --            29,452
Other borrowed funds ..........................................         8,187                --             8,187
Accrued interest payable ......................................        11,456               423            11,879
Current income taxes ..........................................         1,670                --             1,670
Deferred income taxes .........................................           314                --               314

Other liabilities .............................................        20,672                --            20,672
Minority Interest .............................................           325                --               325
                                                                  -----------       -----------       -----------
      Total liabilities .......................................     1,774,610           187,265         1,961,875
                                                                  -----------       -----------       -----------

Trust preferred securities ....................................        15,000            20,000 (e)        35,000

Common stock, $.01 par value per share ........................           159                --               159

Paid-in capital ...............................................       157,732                --           157,732

Common stock acquired by ESOP/RRP .............................            --                --                --
Treasury stock, at cost .......................................            --                --                --
Retained earnings - substantially restricted ..................        (6,057)               --            (6,057)
Accumulated other comprehensive loss ..........................        (3,975)               --            (3,975)
                                                                  -----------       -----------       -----------
      Total stockholders' equity ..............................       147,859                --           147,859
                                                                  -----------       -----------       -----------
             Total liabilities and stockholders' equity .......     1,937,469           207,265         2,144,734
                                                                  ===========       ===========       ===========
</TABLE>

   (1) See accompanying notes to unaudited combined condensed pro forma
       financial statements to which specific references above also refer.


                                       60
<PAGE>   68
UNAUDITED COMBINED CONDENSED PRO FORMA STATEMENT OF OPERATIONS
FOR THE NINE MONTHS ENDED SEPTEMBER 30, 2000

<TABLE>
<CAPTION>

                                                                                                            Glacier and
------------------------------------------------------------    Glacier                    Pro forma         WesterFed
     (amounts in thousands, except per share data)            Bancorp, Inc.  WesterFed    Adjustments (1)    Combined
------------------------------------------------------------  -------------  ----------   -----------       -----------
<S>                                                           <C>            <C>          <C>               <C>
Interest income
      Loans ................................................   $   46,338        39,268         1,341 (e)        86,947
      Investments and interest bearing deposits ............       11,601        13,862        (1,423)(e)       23,986
                                                                                                  (54)(e)
                                                               ----------    ----------    ----------       ----------
      Total interest income ................................       57,939        53,130          (136)         110,933

Interest expense
      Deposits .............................................       16,246        19,527           639 (e)       36,412
      Borrowings ...........................................       11,114        10,819           620 (e)       22,553
      Trust preferred securities ...........................           --            --         1,170 (e)        1,170
                                                               ----------    ----------    ----------       ----------
      Total interest expense ...............................       27,360        30,346         2,429           60,135

      Net interest income ..................................       30,579        22,784        (2,565)          50,798
Provision for loan losses ..................................        1,483         1,350            --            2,833
                                                               ----------    ----------    ----------       ----------
      Net interest income after provision for loan losses...       29,096        21,434        (2,565)          47,965

Non-interest income
      Fees and service charges .............................        7,255         6,099            --           13,354
      Net gains on sale of  loans ..........................        1,512           245            --            1,757
      Net losses on sale of investments ....................           (5)       (1,068)           --           (1,073)
      Gain on sale of branch offices .......................                      1,878                          1,878
      Other income .........................................        1,335           514          (184)(e)        1,665
                                                               ----------    ----------    ----------       ----------
      Total non-interest income ............................       10,097         7,668          (184)          17,581

Non-interest expense
      Employee compensation and benefits ...................       12,078         9,046                         21,124
      Occupancy & equipment ................................        3,568         2,809            60 (e)        6,437
      Other expense ........................................        6,985         5,809            --           12,794
      Deposit premium amortization .........................          149           439           818 (e)        1,406
      Goodwill amortization ................................          270           500           230 (e)        1,000
      Minority interest ....................................           45            --            --               45
                                                               ----------    ----------    ----------       ----------
      Total non-interest expense ...........................       23,095        18,603         1,108           42,806

Earnings before income taxes ...............................       16,098        10,499        (3,857)          22,740
Federal and state income tax expense .......................        5,825         4,038        (1,414)           8,449
                                                               ----------    ----------    ----------       ----------

      Net earnings .........................................   $   10,273         6,461        (2,443)          14,291
                                                               ==========    ==========    ==========       ==========

Average common shares outstanding - basic ..................       11,439         3,959                         15,794
Average common shares outstanding - diluted ................       11,548         4,075                         16,031
Basic net earnings per share of common stock ...............   $     0.90          1.63                           0.90
Diluted net earnings per share of common stock .............   $     0.89          1.59                           0.89



                                                                                 Glacier
                                                                               Bancorp Inc.
                                                              Idaho/Utah        Pro Forma
                                                                Branches (1)    Combined
                                                              -----------      ----------
<S>                                                            <C>             <C>
Interest income
      Loans ................................................        3,530          90,477
      Investments and interest bearing deposits ............        6,730          30,716
                                                               ----------      ----------
      Total interest income ................................       10,260         121,193

Interest expense
      Deposits .............................................        5,042          41,454
      Borrowings ...........................................                       22,553
      Trust preferred securities ...........................        1,560(e)        2,730
                                                               ----------      ----------
      Total interest expense ...............................        6,602          66,737

      Net interest income ..................................        3,658          54,456
Provision for loan losses ..................................           89           2,922
                                                               ----------      ----------
      Net interest income after provision for loan losses...        3,569          51,534

Non-interest income
      Fees and service charges .............................        1,367          14,721
      Net gains on sale of  loans ..........................           --           1,757
      Net losses on sale of investments ....................           --          (1,073)
      Gain on sale of branch offices .......................           --           1,878
      Other income .........................................           --           1,665
                                                               ----------      ----------
      Total non-interest income ............................        1,367          18,948

Non-interest expense
      Employee compensation and benefits ...................        1,312          22,436
      Occupancy & equipment ................................          365           6,802
      Other expense ........................................          895          13,689
      Deposit premium amortization .........................          351(e)        1,757
      Goodwill amortization ................................          603(e)        1,603
      Minority interest ....................................           --              45
                                                               ----------      ----------
      Total non-interest expense ...........................        3,526          46,332

Earnings before income taxes ...............................        1,410          24,150
Federal and state income tax expense .......................          562           9,011
                                                               ----------      ----------

      Net earnings .........................................          848          15,139
                                                               ==========      ==========

Average common shares outstanding - basic ..................                      15,794
Average common shares outstanding - diluted ................                      16,031
Basic net earnings per share of common stock ...............                        0.96
Diluted net earnings per share of common stock .............                        0.94
</TABLE>

   (1) See accompanying notes to unaudited combined condensed pro forma
       financial statements to which specific references above also refer.

                                       61
<PAGE>   69
UNAUDITED COMBINED CONDENSED PRO FORMA STATEMENT OF OPERATIONS
FOR THE YEAR ENDED DECEMBER 31, 1999
<TABLE>
<CAPTION>


-----------------------------------------------------------------           Glacier                               Pro forma
      (amounts in thousands, except per share data)                      Bancorp, Inc.           WesterFed      Adjustments (1)
-----------------------------------------------------------------        -------------          ----------      -----------
<S>                                                                      <C>                    <C>             <C>
Interest income

      Loans .....................................................          $   51,741              52,083             1,788 (e)
      Investments and interest bearing deposits .................              12,978              18,073            (1,897)(e)
                                                                                                                        (71)(e)
                                                                           ----------          ----------        ----------
      Total interest income .....................................              64,719              70,156              (180)

Interest expense
      Deposits ..................................................              16,494              24,941               852 (e)
      Borrowings ................................................              11,141              13,258               826 (e)
      Trust preferred securities ................................                  --                  --             1,560 (e)
                                                                           ----------          ----------        ----------
      Total interest expense ....................................              27,635              38,199             3,238

      Net interest income .......................................              37,084              31,957            (3,418)
Provision for loan losses .......................................               1,723               1,670                --
                                                                           ----------          ----------        ----------
      Net interest income after provision for loan losses .......              35,361              30,287            (3,418)

Non-interest income
      Fees and service charges ..................................               8,497               6,841                --
      Net gains on sale of  loans ...............................               3,108                 754                --
      Net gains on sale of investments ..........................                  23                 103                --
      Other income ..............................................               1,181                 686              (246)(e)
                                                                           ----------          ----------        ----------
      Total non-interest income .................................              12,809               8,384              (246)

Non-interest expense
      Employee compensation and benefits ........................              14,557              13,258                --
      Occupancy & equipment .....................................               4,172               3,808                80 (e)
      Other expense .............................................              10,011               8,507                --
      Deposit premium amortization ..............................                  51                 706             1,091 (e)
      Goodwill amortization .....................................                 254                 666               307 (e)
      Minority interest .........................................                  51                  --                --
                                                                           ----------          ----------        ----------
      Total non-interest expense ................................              29,096              26,945             1,478

Earnings before income taxes ....................................              19,074              11,726            (5,142)
Federal and state income tax expense ............................               6,722               4,411            (1,886)
                                                                           ----------          ----------        ----------

      Net earnings ..............................................          $   12,352               7,315            (3,256)
                                                                           ==========          ==========        ==========

Average common shares outstanding - basic .......................              11,393               4,303               430
Average common shares outstanding - diluted .....................              11,597               4,488               449
Basic net earnings per share of common stock ....................          $     1.08                1.70
Diluted net earnings per share of common stock ..................          $     1.06                1.63




                                                                                                                     Glacier
                                                                             Glacier                               Bancorp, Inc.
-----------------------------------------------------------------           WesterFed          Idaho/Utah              after
      (amounts in thousands, except per share data)                         Combined            Branches  (1)      acquisitions
-----------------------------------------------------------------          ----------         -----------          ------------
<S>                                                                        <C>                <C>                  <C>
Interest income

      Loans .....................................................             105,612               4,706             110,318
      Investments and interest bearing deposits .................              29,083               8,973              38,056

                                                                           ----------          ----------          ----------
      Total interest income .....................................             134,695              13,679             148,374

Interest expense
      Deposits ..................................................              42,287               6,722              49,009
      Borrowings ................................................              25,225                                  25,225
      Trust preferred securities ................................               1,560               2,080 (e)           3,640
                                                                           ----------          ----------          ----------
      Total interest expense ....................................              69,072               8,802              77,874

      Net interest income .......................................              65,623               4,877              70,500
Provision for loan losses .......................................               3,393                 119               3,512
                                                                           ----------          ----------          ----------
      Net interest income after provision for loan losses .......              62,230               4,758              66,988

Non-interest income
      Fees and service charges ..................................              15,338               1,823              17,161
      Net gains on sale of  loans ...............................               3,862                  --               3,862
      Net gains on sale of investments ..........................                 126                  --                 126
      Other income ..............................................               1,621                  --               1,621
                                                                           ----------          ----------          ----------
      Total non-interest income .................................              20,947               1,823              22,770

Non-interest expense
      Employee compensation and benefits ........................              27,815               1,749              29,564
      Occupancy & equipment .....................................               8,060                 486               8,546
      Other expense .............................................              18,518               1,193              19,711
      Deposit premium amortization ..............................               1,848                 468 (e)           2,316
      Goodwill amortization .....................................               1,227                 804 (e)           2,031
      Minority interest .........................................                  51                  --                  51
                                                                           ----------          ----------          ----------
      Total non-interest expense ................................              57,519               4,700              62,219

Earnings before income taxes ....................................              25,658               1,881              27,578
Federal and state income tax expense ............................               9,247                 735               9,982
                                                                           ----------          ----------          ----------

      Net earnings ..............................................              16,411               1,146              17,577
                                                                           ==========          ==========          ==========

Average common shares outstanding - basic .......................              16,126                                  16,126
Average common shares outstanding - diluted .....................              16,534                                  16,534
Basic net earnings per share of common stock ....................                1.02                                    1.09
Diluted net earnings per share of common stock ..................                0.99                                    1.06
</TABLE>



  (1) See accompanying notes to unaudited combined condensed pro forma
      financial statements to which specific references above also refer.

                                       62
<PAGE>   70


                      NOTES TO UNAUDITED COMBINED CONDENSED
                         PRO FORMA FINANCIAL STATEMENTS

NOTE A: BASIS OF PRESENTATION

The unaudited combined condensed pro forma statement of financial condition
combines the historical consolidated statements of financial condition of
Glacier, WesterFed, and the anticipated effects of the Branch Acquisitions in
Idaho and Utah from Wells Fargo/First Security Bank of Utah as if the Merger and
Branch Acquisitions had become effective on September 30, 2000. The unaudited
pro forma combined statements of operations for the nine months ended September
30, 2000, and the year ended December 31, 1999, combines the historical
consolidated statements of operations of Glacier and WesterFed, and the
anticipated effects of the Branch Acquisitions as if the Merger and Branch
Acquisitions had become effective on January 1, 1999. Certain amounts in the
historical financial statements of WesterFed have been reclassified in the
unaudited combined condensed pro forma financial statements to conform to
Glacier's historical financial statements.

The Merger and Branch Acquisition will be accounted for using the purchase
method of accounting. Under this method of accounting, assets and liabilities
acquired are adjusted to their estimated fair value and combined with the
historical book values of the assets and liabilities of Glacier. Additionally,
WesterFed's Common Stock, additional paid in capital, unrealized gains and
losses on securities-available-for-sale, and retained earnings is eliminated.
Applicable income tax effects of such adjustments are included as a component of
Glacier's net deferred taxes with a corresponding offset to goodwill. The actual
revaluation of the net assets acquired is subject to the completion of studies
and evaluations by management and will be based on the estimated fair value of
the net assets acquired at the Effective Dates of the Merger and Branch
Acquisition.

Any transactions conducted in the ordinary course of business between Glacier,
WesterFed, and Wells Fargo/First Security of Utah would be immaterial and,
accordingly, have not been eliminated.

Following the Merger and, subject to regulatory approvals, Glacier may merge
certain branches of Western Security Bank, a wholly-owned subsidiary of
WesterFed, with other Glacier subsidiaries, and may close branches that are
considered non-strategic or are located close to other branches of the combined
company. The impact of any such merger, or closings is not expected to be
material. Glacier also expects to achieve certain operating cost savings as a
result of the Merger; however, no pro forma adjustment has been included in the
unaudited pro forma combined financial information for the anticipated cost
savings.

The branches acquired in the Branch Acquisitions will become branches of
Mountain West Bank of Coeur d' Alene, Idaho, a wholly-owned subsidiary of
Glacier.

NOTE B: PURCHASE PRICE OF WESTERFED

It is assumed that each WesterFed share will be exchanged for 1.1 shares of
Glacier stock. The merger consideration to be paid to WesterFed stockholders is
assumed to be $22.52 per share calculated by multiplying the closing price of
Glacier stock, assumed to be $12.25, by 1.1, plus $9.05 per share. The total
number of WesterFed Shares outstanding as of September 30, 2000 is 4,113,886.
The actual merger consideration per share is subject to adjustment depending on
the average price of Glacier stock prior to the Effective Date. If the actual
merger consideration is adjusted, the actual results will differ from the pro
forma information presented herein.


                                       63
<PAGE>   71
        Total purchase price consideration for accounting purposes is calculated
as follows (in thousands, except per share amounts):
<TABLE>

<S>                                                                               <C>
Acquisition of 4,113,886 shares of WesterFed Common Stock
      for total consideration of $22.52 per share...............................   $ 92,665
Valuation adjustment for stock option shares ...................................      1,348
Estimated direct acquisition costs..............................................      5,700
                                                                                   --------
        Total purchase price....................................................   $ 99,713
                                                                                   ========
</TABLE>


It is assumed that 59% of the acquisition cost of WesterFed is paid through the
issuance of Glacier Common Stock. The assumed value of these shares is $12.25.
The actual value of these shares will be based on the average closing price of
Glacier Common Stock for the 20 trading days ending on the 15th trading day
prior to the completion of the Merger. The total number of Glacier common shares
estimated to be issued is as follows (dollars in thousands, except share
amounts):

<TABLE>
<CAPTION>

<S>                                                                               <C>
Acquisition cost of WesterFed common stock .............................          $   92,665
Percentage to be paid through issuance of stock ........................                  59%
                                                                                  ----------
        Acquisition cost to be paid through the issuance of stock ......              54,673
Divided by the assumed value per share of shares issued ................          $    12.25
                                                                                  ----------
Total Glacier shares to be issued ......................................           4,463,102
                                                                                  ==========
</TABLE>



The acquisition cost to be paid through the issuance of stock will be recorded
as follows:

<TABLE>
<CAPTION>

<S>                                                                          <C>
Acquisition cost to be paid through the issuance of common stock............ $56,021
Less par value of common stock issued.......................................     (45)
                                                                             -------
Additional paid-in capital.................................................. $55,976
                                                                             =======
</TABLE>


The cash consideration is assumed to be funded with the proceeds of trust
preferred securities and with the sale of investment securities which are
classified as available-for-sale and whose carrying value approximates market
value. The total cash consideration is assumed as follows:

<TABLE>
<S>                                                                            <C>
Acquisition cost of WesterFed common stock...................................  $92,665
Percentage to be paid in cash at closing.....................................       41%
                                                                               -------
        Acquisition cost to be paid in cash...................................  37,993
Estimated direct acquisition costs............................................   5,700
                                                                               -------
Total acquisition costs paid in cash.......................................... $43,693
                                                                               =======
</TABLE>

According to the terms of the agreement, the total that can be paid in cash to
stockholders is limited to $41.3 million.

NOTE C: ALLOCATION OF PURCHASE PRICE OF WESTERFED

Certain matters are still pending that will have an effect on the ultimate
allocation of the purchase price. Accordingly, the allocation of the purchase
price has not been finalized and the portion of the purchase price allocated to
fair value adjustments, identifiable intangibles and goodwill is subject to
change.

                                       64
<PAGE>   72
Subject to the foregoing, the purchase price has been allocated as described
below (in thousands):

<TABLE>
<CAPTION>

<S>                                                                                                     <C>          <C>
WesterFed's net assets at September 30, 2000 .................................................                       $ 91,991

Increase (decrease) to WesterFed's net assets as a result of estimated fair
  value adjustments:
        Investment securities held-to-maturity ...............................................          $    357
        Premises and equipment ...............................................................             2,000
        Loans receivable, net ................................................................           (12,513)
        Deposits .............................................................................             2,555
        Accrued expenses(1) ..................................................................            (4,925)
        Borrowed funds .......................................................................             2,478
        Mortgage servicing rights ............................................................             1,721
        Core deposit intangible ..............................................................            10,914
                                                                                                        --------
                                                                                                        $  2,587
        Applicable income tax effects (2) ....................................................            (1,009)
                                                                                                        --------
Net fair value adjustments ...................................................................                          1,578
Eliminate WesterFed's existing goodwill ......................................................                        (14,264)
                                                                                                                     --------
Estimated fair value of identifiable tangible and intangible net assets ......................                       $ 79,305
Goodwill .....................................................................................                         20,408
                                                                                                                     --------
Total purchase price consideration ...........................................................                       $ 99,713
                                                                                                                     ========
</TABLE>

(1) Includes $2,733,000 of estimated severance costs under existing
    WesterFed employment agreements.

(2) Estimated marginal tax rate of 39%.

NOTE D: BRANCH PURCHASE

The acquisition of the Idaho and Utah branches is structured as a purchase of
assets and assumption of liabilities. With certain exceptions, all of the
deposits of the branches, real and personal property at each of the branch
locations, vault cash, and loans associated with the deposit accounts will be
acquired. The net difference between the assets acquired and liabilities
assumed, (estimated to be approximately $126.255 million), and acquisition
consideration paid by Mountain West Bank of Coeur d'Alene, will be paid in cash
by the selling banks. Such amounts ($105.490 million) are reflected as
investment securities available for sale. The amounts shown in the Idaho/Utah
Branches column on the unaudited combined condensed pro forma financial
statements were based on information provided by the selling banks and
Management's estimates of operating results.

The acquisition consideration paid is expected to be as follows:

<TABLE>
<CAPTION>

        <S>                                                                        <C>
        Core deposit intangible................................................     $ 4,682
        Goodwill...............................................................      16,083
                                                                                    -------
               Total acquisition consideration.................................     $20,765
                                                                                    =======
</TABLE>


NOTE E: PRO FORMA ADJUSTMENTS

For the unaudited combined condensed pro forma statements of operations, the pro
forma adjustments are based on the allocated purchase price of the net assets
acquired based on the fair value estimates at September 30, 2000 described
above.

                                       65
<PAGE>   73

Investment securities will be adjusted to fair value based on current securities
yields and the fair value adjustment will be amortized to interest income as a
yield adjustment using the level yield method over the average estimated life of
the securities, currently estimated to be five years.

Loans receivable will be adjusted to fair value based on current loan interest
rates and the fair value adjustment will be amortized to interest income as a
yield adjustment using the level yield method over the average estimated life of
the underlying loans receivable, currently estimated to be seven years.

Premises and equipment will be adjusted to fair value based on current market
value evaluations and the new basis will be depreciated on a straight line basis
over the remaining estimated economic life of the related assets, currently
estimated at 25 years.

Mortgage servicing rights will be adjusted to fair value based on current market
evaluations and the fair market value adjustment will be amortized on a straight
line basis over the weighted average maturity of the associated loans, currently
estimated to be seven years.

Interest-bearing time deposits will be adjusted to fair value based on current
time deposit interest rates and the fair value adjustment will be amortized into
interest expense using the interest method over the estimated duration of the
related deposit, currently estimated to be three years.

Borrowed funds will be adjusted to fair value based on the current interest
rates of borrowings and the fair value adjustment will be amortized to interest
expense using the interest method over the contractual duration of the related
borrowings, currently estimated to be three years.

For purposes of calculating pro forma adjustments, straight-line amortization
has been used as any differences between the interest method and the
straight-line method would not be significant.

Core deposit intangible will be amortized over the expected economic life, which
is assumed to be ten years. It is anticipated that the amortization amount will
be larger in the earlier years of the amortization period. Goodwill will be
amortized over a twenty-year period on a straight-line basis.

Securities sold to fund the acquisition's cash consideration are estimated to be
$28.229 million with an assumed interest rate of 6.72%.

In addition to the sale of securities, funding of the transactions will be
obtained from proceeds of $35 million trust preferred securities to be issued by
Glacier with an assumed interest rate of 9.5%. The amortization of origination
costs over a five year call period will result in an effective interest cost of
approximately 10.4%.

Pro forma combined weighted average shares outstanding is based on the number of
shares assumed to be issued to WesterFed stockholders as described above
combined with the actual weighted average shares outstanding for Glacier for the
respective periods. No options to acquire WesterFed common stock are assumed to
be outstanding after the Effective Date of the Merger.

The incremental effect on pro forma combined net earnings of the WesterFed
purchase accounting adjustments for the year ended December 31, 1999 and the
nine months ended September 30, 2000 is estimated to be an after-tax increase in
expense as follows, using an estimated marginal tax rate of 39%:


                                       66
<PAGE>   74
<TABLE>
<CAPTION>
                                                  Amortization    Quarterly        Annual
     (Dollars in thousands)          Adjustment    Period in     Amortization   Amortization
                                        Amount       Years          Amount        Amount
                                     ----------   ------------   ------------   ------------
<S>                                  <C>          <C>            <C>            <C>
Fair value adjustments:
  Investment securities .........    $    357            5         $   18         $    71
  Loans receivable ..............     (12,513)           7           (447)         (1,788)
  Premises and equipment ........       2,000           25             20              80
  Deposits ......................       2,555            3            213             852
  Accrued expenses ..............      (4,925)          --
  Borrowed funds ................       2,478            3            207             826
  Mortgage servicing rights .....       1,721            7             61             246
  Core deposit intangible .......      10,914           10            273           1,091
  Goodwill ......................       6,144           20             77             307
                                     --------                      ------         -------
Total adjustments ...............    $  8,731                         422           1,685
                                     ========
  Income taxes ..................                                     134             537
                                                                   ------         -------
Incremental decrease on pro forma
  combined net earnings..........                                  $  288         $ 1,148
                                                                   ======         =======
</TABLE>


<TABLE>
<CAPTION>

     (Dollars in thousands)        Estimated amortization for the year ended  December 31,
                                      2001      2002       2003       2004       2005
                                    --------   -------    -------    -------    -------
<S>                                 <C>        <C>        <C>        <C>        <C>
Fair value adjustments:
  Investment securities .........   $    71    $    71    $    71    $    71    $    71
  Loans receivable ..............    (1,788)    (1,788)    (1,788)    (1,788)    (1,788)
  Premises and equipment ........        80         80         80         80         80
  Deposits ......................       852        852        852
  Accrued expenses ..............
  Borrowed funds ................       826        826        826
  Mortgage servicing rights .....       246        246        246        246        246
  Core deposit intangible .......     2,046      1,827      1,579      1,327      1,075
  Goodwill ......................       307        307        307        307        307
                                    -------    -------    -------    -------    -------
Total adjustments ...............     2,640      2,421      2,173        243         (9)

  Income taxes ..................       910        825        728        (25)      (123)
                                    -------    -------    -------    -------    -------
Incremental decrease on pro forma
  combined net earnings..........   $ 1,730    $ 1,596    $ 1,445    $   268    $   114
                                    =======    =======    =======    =======    =======
</TABLE>

(F) PRO FORMA INCOME PER SHARE

Pro forma combined weighted average shares outstanding is based on the number of
shares assumed to be issued to WesterFed shareholders as described above
combined with the actual weighted average shares outstanding for Glacier for the
respective periods.
                                       67
<PAGE>   75



                      STOCK PRICE AND DIVIDEND INFORMATION

        GLACIER. Glacier common stock is quoted on the Nasdaq National Market
under the symbol "GBCI." The following table sets forth for the periods
indicated:

        -       the high and low sale prices for Glacier stock as reported on
                the Nasdaq National Market, and

        -       dividends per share on Glacier stock.

<TABLE>
<CAPTION>

                                             HIGH                 LOW         DIVIDENDS DECLARED
                                             ----                 ---         ------------------
  <S>                                       <C>                 <C>           <C>
  1998 *
  First quarter.....................        $24.38              $19.21               $0.10
  Second quarter....................        $23.55              $21.90               $0.11
  Third quarter.....................        $23.97              $20.72               $0.12
  Fourth quarter....................        $20.57              $17.16               $0.19

  1999 *
  First quarter.....................        $21.82              $17.05               $0.14
  Second quarter....................        $24.38              $17.27               $0.15
  Third quarter.....................        $23.88              $15.25               $0.15
  Fourth quarter....................

  2000 *
  First quarter.....................        $14.77              $11.36               $0.14
  Second quarter....................        $14.75              $11.00               $0.15
  Third quarter.....................        $13.75              $11.00               $0.15
  Fourth quarter (through
      _________, 2000)..............
</TABLE>


*The per share information has been adjusted retroactively for all stock splits
of and stock dividends on Glacier stock.

        At _____________, 2000, there were approximately _____ holders of record
of Glacier stock.

        Applicable federal and state regulations restrict capital distributions
by institutions such as Glacier's subsidiary banks, including dividends. Such
restrictions are tied to the institution's capital levels after giving effect to
such distributions.
See "SUPERVISION AND REGULATION - Dividends."

        WesterFed. WesterFed common stock is quoted on the Nasdaq National
Market under the symbol "WSTR." The following table sets forth for the periods
indicated:

        -       the high and low sale prices for WesterFed common stock as
                reported on the Nasdaq National Market, and

        -       dividends per share on WesterFed common stock.

                                       68
<PAGE>   76

<TABLE>
<CAPTION>

                                               HIGH              LOW          DIVIDENDS DECLARED
                                               ----              ---          ------------------
<S>                                          <C>               <C>            <C>
FISCAL YEAR ENDED JUNE 30, 1998
First Quarter...........................     $26.750           $20.000              $0.115
Second Quarter..........................     $27.000           $22.250              $0.120
Third Quarter...........................     $26.750           $24.500              $0.125
Fourth Quarter..........................     $26.630           $24.000              $0.180*

FISCAL YEAR ENDED JUNE 30, 1999
First Quarter...........................      $24.875          $17.000              $0.135
Second Quarter..........................      $20.125          $17.188              $0.140
Third Quarter...........................      $18.625          $16.188              $0.145
Fourth Quarter..........................      $17.250          $15.938              $0.200**

FISCAL YEAR ENDED DECEMBER 31, 1999***
First Three Months......................      $17.813          $16.250              $0.155
Second Three Months.....................      $17.125          $14.750              $0.160

FISCAL YEAR ENDED DECEMBER 31, 2000
First Quarter...........................      $15.250          $13.750              $0.165
Second Quarter..........................      $14.750          $12.625              $0.170
Third Quarter...........................      $21.125          $14.313              $0.175
Fourth Quarter..........................      $                $                    $
(through              , 2000)...........
</TABLE>


*Declared on June 23, 1998 and paid on August 24, 1998 to stockholders of record
as of August 10, 1998. Included a special dividend of $0.05 per share.

**Declared on June 24, 1999 and paid on July 21, 1999 to stockholders of record
as of July 7, 1999. Included a special dividend of $0.05 per share.

***Effective December 31, 1999, WesterFed changed its fiscal year end from June
30 to December 31.

        At ____________, 2000, there were approximately ________ holders of
record of WesterFed common stock

        Applicable federal regulations restrict capital distributions by
WesterFed's savings bank subsidiary. See "SUPERVISION AND REGULATION -
Dividends."

                                       69
<PAGE>   77

                     BUSINESSES OF THE PARTIES TO THE MERGER

INFORMATION CONCERNING GLACIER

GENERAL

        Glacier is a corporation organized under Delaware law, and a registered
bank holding company. Glacier's principal office is located in Kalispell,
Montana, and it presently has seven bank subsidiaries. Glacier has long-standing
roots in northwest Montana dating back to 1955, and owns:

        -       all of the outstanding common stock of Glacier Bank of
                Kalispell, First Security Bank of Missoula, Valley Bank of
                Helena, Big Sky Western Bank of Big Sky, Montana and Mountain
                West Bank of Coeur d'Alene, Idaho;

        -       approximately 94% of the outstanding common stock of Glacier
                Bank of Whitefish; and

        -       approximately 98% of the outstanding common stock of Glacier
                Bank of Eureka.

        Glacier offers a broad range of community banking services through its
banking offices located primarily in western Montana and Billings, Montana.
Through Mountain West Bank, Glacier also conducts business in Coeur d'Alene,
Hayden, Post Falls and Boise, Idaho. The business of the Glacier subsidiary
banks consists primarily of attracting deposit accounts from the general public
and originating commercial, residential, and installment loans. The Glacier
subsidiary banks' principal sources of income are interest on loans, loan
origination fees, and interest and dividends on investment securities, while
principal expenses consist of interest on deposits, Federal Home Loan Bank
advances, and repurchase agreements, as well as general and administrative
expenses.

        Glacier's expansion plans include internally-generated growth from
strategically-located existing branches, some selected new branch expansion and
expansion into other areas of Montana and Idaho. Glacier also intends to acquire
two branches in Utah. See "Proposed Glacier Branch Acquisitions" below. In
addition to limited de novo branching, Glacier's management strategy has also
been to pursue attractive alliance opportunities with other well-run community
banks such as the proposed transaction with WesterFed, as well as other
financial service related companies. Glacier has continued to invest
significantly in management and other resources to support its expansion.

        Glacier's management is considering the possible divestiture of certain
of the branches of its current banking subsidiaries, and certain of the branches
of WesterFed's savings bank subsidiary, at some point in the future. Any
divested branches would be those identified by Glacier's management as branches
in locations that do not fit into Glacier's strategic business plans. In any
event, Glacier does not anticipate that any such divestitures will, in the
aggregate, be material to Glacier's financial condition or results of
operations.

        Glacier was incorporated on March 24, 1998. It is the successor
corporation of another company, also named "Glacier Bancorp, Inc." that was
formed in 1990. That corporation is referred to in this discussion as "Original
Glacier." Glacier merged with Original Glacier on July 8, 1998. In early 1998,
Original Glacier discovered certain technical issues associated with its capital
stock, including the existence of fewer authorized shares than Original Glacier
had previously believed were available. Because these issues created uncertainty
about the validity of certain outstanding shares of Original Glacier common
stock, Original Glacier completed the merger with Glacier. This transaction was
designed to cure the concerns regarding Original Glacier's common stock.

                                       70
<PAGE>   78

        Historical information regarding Glacier in this document that refers to
a date prior to July 8, 1998, and information regarding Glacier that is
incorporated by reference to certain filings with the SEC, as described in
"INFORMATION INCORPORATED BY REFERENCE," is information regarding Original
Glacier.

        Financial and other information relating to Glacier, including
information relating to Glacier's directors and executive officers, including
the names, ages, positions and backgrounds of such persons, as well as
information concerning executive compensation, security ownership, and certain
relationships and related transactions, is set forth in, and incorporated in
this document by reference to Glacier's 1999 Annual Report on Form 10-K,
Glacier's 2000 Quarterly Reports on Form 10-Q, Glacier's 2000 Proxy Statement,
and Glacier's 2000 Forms 8-K, copies of which may be obtained from Glacier as
indicated under "INFORMATION INCORPORATED BY REFERENCE."

PROPOSED GLACIER BRANCH ACQUISITIONS

        On September 14, 2000, Glacier announced the execution of definitive
agreements to acquire, through its Idaho subsidiary Mountain West Bank, seven
branches of Wells Fargo & Company and First Security Corporation subsidiary
banks located in Idaho and Utah. Wells Fargo has recently purchased First
Security, and the branches that Glacier has agreed to acquire are branches that
federal regulators have required be divested in connection with that
acquisition.

        Glacier will acquire (through Mountain West Bank) a total of
approximately $187 million in deposits and approximately $51.7 million in loans
in the proposed transaction. The proposed acquisition involves the purchase of
certain assets and the assumption of certain liabilities under three separate
agreements:

        -       An agreement with Wells Fargo Bank, National Association,
                regarding two branches located in Hailey and Ketchum, Idaho,
                which branches had total deposits of $38 million and total loans
                of $13 million at June 30, 2000;

        -       An agreement with Wells Fargo Bank West, National Association,
                regarding two branches located in Brigham City and Park City,
                Utah, which branches had total deposits of $49 million and total
                loans of $20 million at June 30, 2000; and

        -       An agreement with First Security Bank, National Association,
                regarding three branches, two located in Boise, Idaho and one
                located in Nampa, Idaho, which branches had total deposits of
                $100 million and total loans of $19 million at June 30, 2000.

        The terms of the three agreements are substantially similar, except for
provisions related to pricing and closing dates. With certain exceptions set
forth in the agreements, Glacier will assume all of the deposits of the branches
and will acquire certain assets of the branches, including real and personal
property and loans associated with the branches' deposit accounts. The sellers
under the agreements will retain all real estate and consumer loans that
originate at the branches prior to the closing of the acquisition.

        Glacier negotiated the purchase prices for the branch acquisitions
separately with each of the sellers. The total purchase price will depend on the
total deposits, cash, assets, and loans of the branches determined immediately
prior to the closing, and thus cannot be predicted with certainty. Glacier
estimates, however, that the total purchase price will be approximately $21
million.

                                       71
<PAGE>   79

        Following the acquisition of the branches, which is expected to occur as
early as March, 2001, all of the acquired branches will operate as branches of
Mountain West Bank. See "RISK FACTORS" for a discussion of the possible
challenges that Glacier and/or Mountain West Bank may experience in integrating
the operations of the branches, at approximately the same time that Glacier also
integrates the operations of WesterFed following completion of the merger.

        To accomplish the proposed branch acquisitions, Glacier could increase
Mountain West Bank's capital through a contribution of funds received by Glacier
from dividends from other Glacier banking subsidiaries. Mountain West Bank will
continue to be "well capitalized" under applicable regulatory standards
following the proposed acquisitions.

        In order to insure that Glacier and its subsidiary banks remain "well
capitalized" under applicable regulatory standards in connection with both the
branch acquisitions and the merger, Glacier intends to issue, through a public
offering, approximately $35 million in trust preferred securities.

        Glacier's issuance of the trust preferred securities is not a condition
to the completion of the merger or to the acquisition of the branches described
above. However, Glacier's receipt of all or part of the funds to be raised in
this transaction is designed to facilitate regulatory approval of the merger.

INFORMATION CONCERNING WESTERFED

        WesterFed, a Delaware corporation, is a unitary savings and loan holding
company and was organized in 1994 at the direction of its savings bank
subsidiary for the purpose of owning all of the outstanding stock of such
savings bank subsidiary in connection with its conversion from mutual to stock
form. The conversion was completed on January 6, 1994. At ___________, 2000,
WesterFed had consolidated assets of $_______ billion, deposits of $_________
million and stockholders' equity of $_____ million (_______% of total assets).

        WesterFed's consolidated results of operations are dependent primarily
on net interest income and fee income. Net interest income is the difference
between the interest income earned on its loans, mortgage-backed securities, and
investment portfolio and its cost of funds, consisting of interest paid on its
deposits and borrowed money. WesterFed's consolidated results of operations are
also significantly affected by general economic and competitive conditions,
particularly changes in market interest rates, government policies and actions
of regulatory authorities.

        WesterFed serves the financial needs of 14 Montana communities through a
main office located in Missoula, 26 branch offices and one loan servicing
office. WesterFed attracts deposits from the general public and uses the
deposits, together with borrowings and other funds, to originate loans secured
by mortgages on owner-occupied one- to four-family residences, multi-family,
commercial, agriculture and construction real estate loans and non-real estate
commercial, agriculture and consumer loans. These loans are generally originated
for its primary market area. WesterFed also invests in mortgage-backed
securities, investment securities and other short-term liquid assets.

        On February 28, 1997, WesterFed completed its acquisition of Security
Bancorp. The acquisition was accounted for as a purchase transaction and
accordingly, WesterFed's consolidated statements of income have included the
results of operations of Security Bancorp since March 1, 1997. Pursuant to this
method of accounting, the assets and liabilities of Security Bancorp were
adjusted to their estimated fair value and combined with the historical recorded
book value of the assets and liabilities of WesterFed. In addition, as of March
1, 1997, Security Bank, a federally chartered stock savings bank and
wholly-owned subsidiary of Security Bancorp, merged with and into WesterFed's

                                       72
<PAGE>   80

savings bank subsidiary. At the time of the merger, Security Bancorp had
consolidated assets of $372.6 million, deposits of $286.5 million and
stockholders' equity of $30.8 million.

        In May 2000, WesterFed completed the sale of six of its branches,
located in Glasgow, Hardin, Malta, Miles City, Plentywood and Sidney, Montana,
to Stockman Bank of Montana. The transaction resulted in the sale of $50.5
million of deposits and $12.2 million of loans with a resulting net gain on the
sale of the branches of $1.9 million.

        WesterFed recently closed two of its branches in the Missoula, Montana
market. One branch, located at 2230 Brooks Street, was closed in May 2000, and
was consolidated into an already existing branch six blocks away at 2601
Garfield near Southgate Mall, in Missoula. The other recently closed branch,
located at 1610 South Third West, was closed in June 2000, and was consolidated
into a newly constructed facility located approximately three miles away at 3045
North Reserve Street in Missoula.

        Financial and other information relating to WesterFed, including
information relating to directors and executive officers and their names, ages,
positions and business backgrounds, as well as information concerning executive
compensation, security ownership, and certain relationships and related
transactions, is set forth in, and is incorporated herein by reference to
WesterFed's Annual Report on Form 10-K for the six months ended December 31,
1999, WesterFed's 2000 Quarterly Reports on Form 10-Q, WesterFed's 2000 annual
meeting proxy statement, and WesterFed's 2000 Current Reports or Form 8-K.
Copies of these documents may be obtained from WesterFed or from the SEC's web
site as indicated under "INFORMATION INCORPORATED BY REFERENCE."


                                       73
<PAGE>   81

                           SUPERVISION AND REGULATION

INTRODUCTION

        The following generally refers to certain statutes and regulations
affecting the banking industry. These references provide brief summaries only
and are not intended to be complete. They are qualified in their entirety by the
referenced statutes and regulations. In addition, some statutes and regulations
may exist which apply to and regulate the banking industry, but are not
referenced below.

        Glacier is a bank holding company, due to its ownership of Glacier Bank
of Kalispell, Glacier Bank of Whitefish, Glacier Bank of Eureka, Valley Bank of
Helena, First Security Bank of Missoula, Big Sky Western Bank of Big Sky,
Montana, and Mountain West Bank of Coeur d'Alene, Idaho. Except for Mountain
West Bank, which is an Idaho chartered, non-member bank, all of such banks are
Montana-state chartered commercial banks and members of the Federal Reserve
System. The Bank Holding Company Act of 1956, as amended subjects Glacier and
its subsidiary banks to supervision and examination by the Federal Reserve
Board, and Glacier files annual reports of operations with the Federal Reserve
Board.

        WesterFed's savings bank subsidiary, Western Security Bank, is a
federally chartered stock savings bank and is subject to examination and
supervision by the Office of Thrift Supervision ("OTS"). Following completion of
the merger, Glacier will be the surviving corporation, with Western Security
Bank becoming a wholly owned subsidiary of Glacier. Immediately following the
merger, Western Security Bank will continue to be supervised and regulated by
the OTS.

        WesterFed, by virtue of its ownership of Western Security Bank, is a
savings and loan holding company within the meaning of the Home Owners' Loan Act
and, as such, is registered with and subject to examination and supervision by
the OTS.

BANK HOLDING COMPANY REGULATION

        In general, the Bank Holding Company Act limits bank holding company
business to owning or controlling banks and engaging in other banking-related
activities. Bank holding companies like Glacier must obtain the Federal Reserve
Board's approval before they: (1) acquire direct or indirect ownership or
control more than 5% of any other company; (2) merge or consolidate with another
bank holding company; or (3) acquire substantially all of the assets of any
additional banks. They can also elect to become a financial holding company.
Financial holding companies are permitted to engage in a range of activities
significantly broader than those permissible for bank holding companies,
including certain insurance, securities, merchant banking and other incidental
activities. Subject to certain state laws, such as age and contingency laws, a
bank holding company that is adequately capitalized and adequately managed may
acquire the assets of both in-state and out-of-state bank.

        Control of Nonbanks. With certain exceptions, the Bank Holding Company
Act prohibits bank holding companies from acquiring direct or indirect ownership
or control of voting shares in any company that is not a bank or a bank holding
company unless the Federal Reserve Board determines that the activities of such
company are incidental or closely related to the business of banking. If a bank
holding company is well-capitalized and meets certain criteria specified by the
Federal Reserve Board, it may engage de novo in certain permissible nonbanking
activities without prior Federal Reserve Board approval.

        Control Transactions. The Change in Bank Control Act of 1978, as
amended, requires a person (or group of persons acting in concert) acquiring
"control" of a bank holding company to provide the Federal Reserve Board with 60
days' prior written notice of the proposed acquisition. Following receipt of
this

                                       74
<PAGE>   82

notice, the Federal Reserve Board has 60 days within which to issue a notice
disapproving the proposed acquisition, but the Federal Reserve Board may extend
this time period for up to another 30 days. An acquisition may be completed
before expiration of the disapproval period if the Federal Reserve Board issues
written notice of its intent not to disapprove the transaction. In addition, any
"company" must obtain the Federal Reserve Board's approval before acquiring 25%
(5% if the "company" is a bank holding company) or more of the outstanding
shares or otherwise obtaining control over Glacier.

TRANSACTIONS WITH AFFILIATES

        Glacier and its subsidiaries are deemed to be affiliates within the
meaning of the Federal Reserve Act, and transactions between affiliates are
subject to certain restrictions. Accordingly, Glacier and its subsidiaries must
comply with Sections 23A and 23B of the Federal Reserve Act. Generally, Sections
23A and 23B: (1) limit the extent to which the financial institution or its
subsidiaries may engage in "covered transactions" with an affiliate, as defined,
to an amount equal to 10% of such institution's capital and surplus and an
aggregate limit on all such transactions with all affiliates to an amount equal
to 20% of such capital and surplus, and (2) require all transactions with an
affiliate, whether or not "covered transactions," to be on terms substantially
the same, or at least as favorable to the institution or subsidiary, as those
provided to a non-affiliate. The term "covered transaction" includes the making
of loans, purchase of assets, issuance of a guarantee and other similar types of
transactions.

        Similar restrictions on affiliate transactions currently apply to
WesterFed and Western Security Bank, and will continue to apply to Western
Security Bank once the merger is complete.

REGULATION OF MANAGEMENT

        Federal law sets forth the circumstances under which officers or
directors of a financial institution may be removed by the institution's federal
supervisory agency. Federal law also places restraints on lending by an
institution to its executive officers, directors, principal stockholders, and
their related interests. Finally, federal law prohibits management personnel
from serving as a director or in other management positions with another
financial institution which has assets exceeding a specified amount, or which
has an office within a specified geographic area.

TIE-IN ARRANGEMENTS

        Federal law prohibits financial institutions from engaging in certain
tie-in arrangements in connection with any extension of credit, sale or lease of
property or furnishing of services. For example, with certain exceptions,
financial institutions may not condition an extension of credit on either (1) a
requirement that the customer obtain additional services provided by it or (2)
an agreement by the customer to refrain from obtaining other services from a
competitor.

        Federal regulators have adopted significant amendments to the anti-tying
rules that, among other things, allow financial institutions greater flexibility
to package products with their affiliates. These amendments were designed to
enhance competition in banking and nonbanking products and to allow financial
institutions and their affiliates to provide more efficient, lower cost service
to their customers. However, the impact of the amendments on Glacier, WesterFed
and their respective subsidiaries is unclear at this time.

                                       75
<PAGE>   83

STATE LAW RESTRICTIONS

        As Delaware corporations, Glacier and WesterFed may be subject to
certain limitations and restrictions as provided under applicable Delaware
corporate law. Each Glacier subsidiary bank that is a Montana state-chartered
commercial bank is subject to supervision and regulation by the Montana
Department of Commerce's Banking and Financial Institutions Division. Mountain
West Bank, as an Idaho state-chartered bank, is subject to supervision and
regulation by the Idaho Department of Finance.

THE SUBSIDIARIES

GENERAL

        Glacier's subsidiaries are subject to extensive regulation and
supervision by the Montana Department of Commerce's Banking and Financial
Institutions Division, and its the subsidiary banks are also subject to
regulation and examination by the Federal Reserve Board as a result of their
membership in the Federal Reserve System. Mountain West Bank's primary federal
regulator is the Federal Deposit Insurance Corporation. WesterFed's savings bank
subsidiary is primarily subject to supervision and regulation by the OTS.

        The federal laws that apply to Glacier's and WesterFed's financial
institution subsidiaries regulate, among other things, the scope of their
business, their investments, their reserves against deposits, the timing of the
availability of deposited funds and the nature and amount of and collateral for
loans. These laws generally have been promulgated to protect depositors, and not
to protect stockholders of such institutions or their holding companies.

        Community Reinvestment Act. The Community Reinvestment Act requires
that, in connection with examinations of financial institutions within their
jurisdiction, the Federal Reserve Board or the FDIC evaluates the record of the
financial institutions in meeting the credit needs of their local communities,
including low and moderate income neighborhoods. These factors are also
considered in evaluating mergers, acquisitions, and applications to open a
branch or facility.

        Insider Credit Transactions. Financial institutions are also subject to
certain restrictions imposed by the Federal Reserve Act on extensions of credit
to executive officers, directors, principal stockholders, or any related
interests of such persons. Extensions of credit must be made on substantially
the same terms, including interest rates and collateral, and follow credit
underwriting procedures that are not less stringent than those prevailing at the
time for comparable transactions with persons not covered above and who are not
employees. Such extensions of credit must not involve more than the normal risk
of repayment or present other unfavorable features. Financial institutions are
also subject to certain lending limits and restrictions on overdrafts to such
persons. A violation of these restrictions may result in the assessment of
substantial civil monetary penalties on the affected institution or any officer,
director, employee, agent, or other person participating in the conduct of the
affairs of that institution, the imposition of a cease and desist order, and
other regulatory sanctions.

        FDICIA. Under the Federal Deposit Insurance Corporation Improvement Act,
each federal banking agency has prescribed, by regulation, noncapital safety and
soundness standards for institutions under its authority. These standards cover
internal controls, information systems, and internal audit systems, loan
documentation, credit underwriting, interest rate exposure, asset growth,
compensation, fees and benefits, such other operational and managerial standards
as the agency determines to be appropriate, and standards for asset quality,
earnings and stock valuation. An institution which fails to meet these standards
must develop a plan acceptable to the agency, specifying the steps that the

                                       76
<PAGE>   84

institution will take to meet the standards. Failure to submit or implement such
a plan may subject the institution to regulatory sanctions. Management of
Glacier and WesterFed believe that their respective subsidiary financial
institutions meet all such standards, and therefore, do not believe that these
regulatory standards materially affect their business operations.

INTERSTATE BANKING AND BRANCHING

        Glacier Subsidiaries The Riegle-Neal Interstate Banking and Branching
Efficiency Act of 1994 permits nationwide interstate banking and branching under
certain circumstances. This legislation generally authorizes interstate
branching and relaxes federal law restrictions on interstate banking. Currently,
bank holding companies may purchase banks in any state, and states may not
prohibit such purchases. Additionally, banks are permitted to merge with banks
in other states as long as the home state of neither merging bank has opted out.
The Riegle-Neal Act requires regulators to consult with community organizations
before permitting an interstate institution to close a branch in a low-income
area.

        Under recent FDIC regulations, banks are prohibited from using their
interstate branches primarily for deposit production. The FDIC has accordingly
implemented a loan-to-deposit ratio screen to ensure compliance with this
prohibition.

        With regard to interstate bank mergers, Montana has "opted-out" of the
Riegle-Neal Act and prohibits in-state banks from merging with out-of-state
banks if the merger would be effective on or before September 30, 2001. Montana
law generally authorizes the acquisition of an in-state bank by an out-of-state
bank holding company through the acquisition of a financial institution if the
in-state bank being acquired has been in existence for at least 5 years prior to
the acquisition. Banks, bank holding companies, and their respective
subsidiaries cannot acquire control of a bank located in Montana if, after the
acquisition, the acquiring institution, together with its affiliates, would
directly or indirectly control more than 22% of the total deposits of insured
depository institutions and credit unions located in Montana. Montana law does
not authorize the establishment of a branch bank in Montana by an out-of-state
bank.

        With regard to interstate bank mergers, Idaho has "opted-in" to the
Riegle-Neal Act and generally permits in-state banks to merge with out-of-state
banks and be acquired by out-of-state bank holding companies, so long as the
in-state bank has been in existence for at least 5 years prior to the
acquisition.

        WesterFed's Subsidiary. In general, federal savings banks like
WesterFed's savings bank subsidiary are prohibited from branching outside their
home state unless they meet at least one of several regulatory requirements,
including meeting the qualified thrift lender test or qualifying as a domestic
building and loan association under the Internal Revenue Code. Savings banks are
also generally permitted to branch into states where the laws of those states
would permit the establishment of a branch if the bank was chartered under the
laws of its home state.

DEPOSIT INSURANCE

        The deposits of the subsidiary banks of Glacier and WesterFed are
currently insured to a maximum of $100,000 per depositor through the Bank
Insurance Fund (or in the case of Western Security Bank, the Savings Association
Insurance Fund) administered by the FDIC. All insured banks are required to pay
semi-annual deposit insurance premium assessments to the FDIC.

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        The Federal Deposit Insurance Corporation Improvement Act included
provisions to reform the Federal Deposit Insurance System, including the
implementation of risk-based deposit insurance premiums. The Act also permits
the FDIC to make special assessments on insured depository institutions in
amounts determined by the FDIC to be necessary to give it adequate assessment
income to repay amounts borrowed from the U.S. Treasury and other sources, or
for any other purpose the FDIC deems necessary. The FDIC has implemented a
risk-based insurance premium system under which institutions are assessed
insurance premiums based on how much risk they present to the deposit insurance
fund. Institutions with higher levels of capital and a low degree of supervisory
concern are assessed lower premiums than institutions with lower levels of
capital or a higher degree of supervisory concern.

DIVIDENDS

        The principal source of Glacier's cash revenues is (and once the merger
is complete, will continue to be) dividends received from its subsidiary banks.
The payment of dividends is subject to government regulation, in that regulatory
authorities may prohibit banks and bank holding companies from paying dividends
which would constitute an unsafe or unsound banking practice. In addition, a
bank may not pay cash dividends if that payment could reduce the amount of its
capital below that necessary to meet minimum applicable regulatory capital
requirements. A federal savings bank, such as WesterFed's savings bank
subsidiary, is subject to limitations contained in OTS regulations on the
payment of dividends and its ability to effect other capital distributions.
Other than the laws and regulations noted above, which apply to all banks and
bank holding companies, neither Glacier, WesterFed, nor any of their
subsidiaries are currently subject to any regulatory restrictions on its
dividends.

CAPITAL ADEQUACY

        Federal bank regulatory agencies use capital adequacy guidelines in the
examination and regulation of bank holding companies and banks. If capital falls
below minimum guideline levels, the holding company or bank may be denied
approval to acquire or establish additional banks or nonbank businesses or to
open new facilities.

        The FDIC, OTS and Federal Reserve Board use risk-based capital
guidelines for banks, savings associations and bank holding companies. These are
designed to make such capital requirements more sensitive to differences in risk
profiles among banks and bank holding companies, to account for off-balance
sheet exposure, and to minimize disincentives for holding liquid assets. Assets
and off-balance sheet items are assigned to broad risk categories, each with
appropriate weights. The resulting capital ratios represent capital as a
percentage of total risk-weighted assets and off-balance sheet items. The
guidelines are minimums, and the Federal Reserve Board has noted that bank
holding companies contemplating significant expansion programs should not allow
expansion to diminish their capital ratios and should maintain ratios well in
excess of the minimum. The current guidelines require all bank holding companies
and federally regulated banks to maintain a minimum risk-based total capital
ratio equal to 8%, of which at least 4% must be Tier I capital.

        Tier I capital for bank holding companies includes common stockholders'
equity, qualifying perpetual preferred stock (up to 25% of total Tier I capital,
if cumulative, although under a Federal Reserve Board Rule, redeemable perpetual
preferred stock may not be counted as Tier I capital unless the redemption is
subject to the prior approval of the Federal Reserve Board), and minority
interests in equity accounts of consolidated subsidiaries, less intangibles,
except as described above.

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        The Federal Reserve Board also employs a leverage ratio, which is Tier I
capital as a percentage of total assets less intangibles, to be used as a
supplement to risk-based guidelines. The principal objective of the leverage
ratio is to constrain the maximum degree to which a bank holding company may
leverage its equity capital base. The Federal Reserve Board requires a minimum
leverage ratio of 3% or 4%, depending on the institution. However, for all but
the most highly rated bank holding companies, and for bank holding companies
seeking to expand, the Federal Reserve Board expects an additional cushion of at
least 1% to 2%.

        The Federal Deposit Insurance Corporation Improvement Act created a
statutory framework of supervisory actions indexed to the capital level of the
individual institution. Under regulations adopted by the FDIC and OTS, an
institution is assigned to one of five capital categories, depending on its
total risk-based capital ratio, Tier I risk-based capital ratio, and leverage
ratio, together with certain subjective factors. Institutions which are deemed
to be "undercapitalized" depending on the category to which they are assigned
are subject to certain mandatory supervisory corrective actions. Glacier and
WesterFed do not believe that these regulations have any material effect on
their operations.

QUALIFIED THRIFT LENDER TEST

        WesterFed's savings bank subsidiary as well as all other savings
associations are required to meet a qualified thrift lender ("QTL") test to
avoid certain restrictions on their operations. This test requires a savings
association to have at least 65% of its portfolio assets (as defined by
regulation) in qualified thrift investments on a monthly average for nine out of
every 12 months on a rolling basis. As an alternative, the savings association
may maintain 60% of its assets in those assets specified in Section 7701(a)(19)
of the Internal Revenue Code. Under either test, such assets primarily consist
of residential housing related loans and investments. WesterFed's savings bank
subsidiary has always met the test since its effectiveness. As of September 30,
2000, WesterFed's QTL ratio under the first test was 73.4%, substantially in
excess of the 65% required.

        Any savings association that fails to meet the QTL test must convert to
a national bank charter, unless it re-qualifies as a QTL and thereafter remains
a QTL. If a savings association does not re-qualify and converts to a national
bank charter, it must remain insured under the Savings Association Insurance
Fund until the FDIC permits it to transfer to the Bank Insurance Fund. If an
association has not yet re-qualified and or converted to a national bank, its
new investments and activities are limited to those permissible for both a
savings association and a national bank, and it is limited to national bank
branching rights in its home state. In addition, the association is immediately
ineligible to receive any new Federal Home Loan Bank borrowings and is subject
to national bank limits for payment of dividends. If such association has not
re-qualified or converted to a national bank within three years after the
failure, it must divest of all investments and cease all activities not
permissible for a national bank. In addition, it must repay promptly any
outstanding Federal Home Loan Bank borrowings, which may result in prepayment
penalties. If any association that fails the QTL test is controlled by a holding
company, then within one year after the failure, the holding company must
register as a bank holding company and become subject to all the restrictions on
bank holding companies.

EFFECTS OF GOVERNMENT MONETARY POLICY

        The earnings and growth of Glacier and WesterFed are affected not only
by general economic conditions, but also by the fiscal and monetary policies of
the federal government, particularly the Federal Reserve Board. The Federal
Reserve Board can and does implement national monetary policy for such purposes
as curbing inflation and combating recession, but its open market operations in
U.S. government securities, control of the discount rate applicable to
borrowings from the Federal Reserve

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System, and establishment of reserve requirements against certain deposits,
influence the growth of bank loans, investments and deposits, and also affect
interest rates charged on loans or paid on deposits. The nature and impact of
future changes in monetary policies and their impact on Glacier and WesterFed
cannot be predicted with certainty.

CHANGES IN BANKING LAWS AND REGULATIONS

        The Gramm-Leach-Bliley Financial Services Modernization Act of 1999
generally (i) repeals the historical restrictions on preventing banks from
affiliating with securities firms, (ii) provides a uniform framework for the
activities of banks, savings institutions and their holding companies, (iii)
broadens the activities that may be conducted by national banks and banking
subsidiaries of bank holding companies, (iv) provides an enhanced framework for
protecting the privacy of consumers' information and (v) addresses a variety of
other legal and regulatory issues affecting both day-to-day operations and
long-term activities of financial institutions.

        Bank holding companies will be permitted to engage in a wider variety of
financial activities than permitted under current law, particularly with respect
to insurance and securities activities. In addition, in a change from current
law, bank holding companies will be in a position to be owned, controlled or
acquired by any company engaged in financially related activities, so long as
such company meets certain regulatory requirements.

        Glacier and WesterFed do not believe that the legislation will
materially affect their operations. However, to the extent the legislation
permits banks, securities firms and insurance companies to affiliate, the
financial services industry may experience further consolidation. This
consolidation could result in a growing number of larger financial institutions
that offer a wider variety of financial services than Glacier and WesterFed
currently offer and that can aggressively compete in the markets currently
served.

                              DESCRIPTION OF GLACIER'S CAPITAL STOCK

        Glacier's authorized capital stock consists of 50,000,000 common stock
shares with a $.01 per share par value, and 1,000,000 preferred stock shares
with a $.01 per share par value. As of the date of this document, Glacier had no
shares of preferred stock issued. The Glacier board is authorized, without
further stockholder action, to issue preferred stock shares with such
designations, preferences and rights as the Glacier board may determine.

        Glacier's stockholders do not have preemptive rights to subscribe to any
additional securities that may be issued. If Glacier is liquidated, the holders
of Glacier common stock are entitled to share, on a pro rata basis, Glacier's
remaining assets after provision for liabilities. The Glacier board of directors
is authorized to determine the liquidation rights and preferences of any
preferred stock that may be issued.

        Under Delaware law, Glacier may acquire shares of its own stock.
Glacier's stockholders may amend Glacier's certificate of incorporation by an
affirmative majority vote of the shares entitled to vote on the matter following
approval of the amendment by Glacier's board, but the anti-takeover provisions
detailed in Section 9.6 of Glacier's certificate of incorporation, may not be
amended or repealed and provisions inconsistent with Article 9 may not be
adopted without the affirmative vote of 80% of Glacier's outstanding voting
stock. Glacier's board of directors is authorized to alter, amend or repeal
Glacier's bylaws by affirmative vote; Glacier's stockholders are authorized to
alter, amend or repeal Glacier's bylaws by majority vote at an annual
stockholders meeting or at a special stockholders meeting.

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        For additional information concerning Glacier's capital stock, see
"COMPARISON OF CERTAIN RIGHTS OF HOLDERS OF GLACIER AND WESTERFED COMMON STOCK."

                   COMPARISON OF CERTAIN RIGHTS OF HOLDERS OF
                       GLACIER AND WESTERFED COMMON STOCK

        Delaware law and Glacier's certificate of incorporation and bylaws
govern the rights of Glacier stockholders and will govern the rights of
WesterFed's stockholders who become stockholders of Glacier as a result of the
merger. The rights of WesterFed stockholders are currently governed by Delaware
law and by WesterFed's certificate of incorporation and bylaws. The following is
a brief summary of certain differences between the rights of WesterFed and
Glacier stockholders. This summary does not purport to be complete and is
qualified by the documents and statutes referenced and by other applicable law.

GENERAL

        Under its certificate of incorporation, Glacier's authorized capital
stock consists of 50,000,000 of common stock, par value $.01 per share, and
1,000,000 shares of preferred stock, $.01 par value per share. No shares of
preferred stock are currently outstanding.

        Under its certificate of incorporation, WesterFed's authorized capital
stock consists of 10,000,000 shares of common stock, $.01 par value per share,
and 5,000,000 shares of preferred stock, $.01 par value per share.

        The following is a more detailed description of Glacier's and
WesterFed's capital stock.:

COMMON STOCK

        As of _____________, 2000, there were _________ shares of Glacier common
stock issued and outstanding, in addition to options for the purchase of
__________ shares of Glacier common stock under Glacier's employee and director
stock option plans.

        As of _____________, 2000, there were _________ shares of WesterFed
common stock issued and outstanding, in addition to options for the purchase of
__________ shares of WesterFed common stock under WesterFed's employee and
director stock option plans.

PREFERRED STOCK

        As of the date of this document, neither Glacier nor WesterFed had
shares of preferred stock issued. Both the Glacier and WesterFed boards of
directors are authorized, without further stockholder action, to issue preferred
stock shares with such designations, preferences and rights as such boards of
directors may determine.

DIVIDEND RIGHTS

        Dividends may be paid on Glacier stock as and when declared by the
Glacier board of directors from funds legally available for the payment of
dividends. The Glacier board of directors may issue preferred stock that is
entitled to such dividend rights as it may determine, including priority over
the common stock in the payment of dividends. The ability of Glacier to pay
dividends basically depends on the amount of dividends paid to it by its
subsidiaries. Accordingly, the dividend restrictions imposed on its subsidiaries
by statute or regulation effectively may limit the amount of dividends Glacier
can pay. See

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"SUPERVISION AND REGULATION - Dividends." Under Delaware law, the Glacier board
of directors can declare dividends from Glacier's surplus. If there is no
surplus, the board of directors may declare dividends out of Glacier's net
profits for the fiscal year in which the dividend is declared, or for the
preceding fiscal year, unless there is a deficiency in the amount of capital
represented by the issued and outstanding stock of all classes having a
preference to the distribution of assets.

        WesterFed is subject to substantially the same limitations on its
ability to pay dividends.

VOTING RIGHTS

        All voting rights are currently vested in the holders of Glacier common
stock and WesterFed common stock, with each share being entitled to one vote.

        Glacier's bylaws and the certificate of incorporation of WesterFed
provide that stockholders do not have cumulative voting rights in the election
of directors.

PREEMPTIVE RIGHTS

        Glacier's and WesterFed's stockholders do not have preemptive rights to
subscribe to any additional securities that may be issued.

LIQUIDATION RIGHTS

        If Glacier is liquidated, the holders of Glacier common stock are
entitled to share, on a pro rata basis, Glacier's remaining assets after
provision for liabilities. The Glacier board of directors is authorized to
determine the liquidation rights of any preferred stock that may be issued.

        If WesterFed is voluntarily liquidated, the holders of WesterFed common
stock are entitled to share, on a pro rata basis, WesterFed's remaining assets
after provision for liabilities.

ASSESSMENTS

        All outstanding shares of both Glacier and WesterFed common stock are
fully paid and nonassessable.

STOCK REPURCHASES

        Under Delaware law, a corporation may acquire shares of its own stock.
Therefore, Glacier and WesterFed may repurchase shares of their own capital
stock. Under the regulations of the Federal Reserve Board, Glacier, as a bank
holding company, may be limited from repurchasing its shares, if, for instance,
such repurchase would cause Glacier to become not "well-capitalized" as defined
in applicable regulations.

AMENDMENT OF ARTICLES OF INCORPORATION AND BYLAWS

        Under Delaware law, Glacier's stockholders may amend Glacier's
certificate of incorporation by an affirmative majority vote of the shares
entitled to vote on the matter following approval of the amendment by Glacier's
board, but the anti-takeover provisions detailed in Article 9 of Glacier's
certificate of incorporation may not be amended or repealed, and provisions
inconsistent with Article 9 may not be adopted, without the affirmative vote of
80% of the outstanding voting stock. Glacier's board of directors is authorized
to alter, amend or repeal Glacier's bylaws by affirmative vote of a majority of
its members;

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Glacier's stockholders are also authorized to alter, amend or repeal Glacier's
bylaws by majority vote at an annual stockholders meeting or at a special
stockholders meeting.

        WesterFed's certificate of incorporation generally may be amended by the
affirmative vote of a majority of the outstanding shares entitled to vote
following approval of the amendment by WesterFed's board of directors; however,
certain anti-takeover provisions of WesterFed's certificate of incorporation may
not be amended without the approval of at least 80% of the outstanding shares of
WesterFed stock entitled to vote generally in the election of directors.
Currently, the only class of such stock is WesterFed's common stock. Such
anti-takeover provisions include those which: do not permit stockholders to act
by written consent; permit only the board of directors to call special meetings
of stockholders; prohibit stockholders owning more than 10% of the outstanding
shares from voting shares in excess of that amount; classify the board of
directors; relate to the removal of directors; prohibit certain business
combinations with 10% stockholders; and prevent the payment of greenmail.
WesterFed's bylaws may be amended by a majority of the full board of directors
or by the affirmative vote of at least 80% of the outstanding shares of
WesterFed stock entitled to vote generally in the election of directors.

APPROVAL OF CERTAIN TRANSACTIONS

        Under Delaware law, sales of assets, mergers and dissolutions must be
approved by a majority of a corporation's outstanding stock. In addition,
Delaware law prohibits certain business combinations with a business entity for
a period of three years following the entity's acquisition of at least 15% of
the corporation's voting stock. Article 9 of Glacier's certificate of
incorporation provides that certain mergers involving a stockholder owning 10%
or more of Glacier's outstanding voting stock must be approved by 80% of
Glacier's outstanding voting stock. These provisions are described in "Potential
`Anti-Takeover' Provisions" below.

        WesterFed's certificate of incorporation contains a similar provision.

DISSENTERS' RIGHTS

        Under Delaware law, a stockholder who has neither voted in favor of a
proposed merger nor consented in writing to a proposed merger is entitled to an
appraisal by the Delaware Court of Chancery of the fair value of his or her
shares, unless the merger is a stock-for-stock merger and either (i) the stock
is listed on a national exchange or is designated a national market system
security on an interdealer quotation system by the Nasdaq Stock Market, (ii) the
stock is held by more than 2,000 stockholders, or (iii) stockholders are not
entitled to vote on the merger. Because Glacier's common stock is traded on
Nasdaq, in the event of a proposed merger where the outstanding Glacier shares
are to be exchanged solely for stock of another entity traded on a national
exchange or on Nasdaq, Glacier stockholders will not be entitled under Delaware
law to appraisal rights (rights to receive the fair value of their shares in
cash upon dissent from the proposed merger and rights to an appraisal of the
fair value of their shares), regardless of whether a Glacier stockholder votes
for or against such proposed merger.

BOARD OF DIRECTORS

        Glacier's certificate of incorporation provides for division of its
board into three classes, as nearly equal in number as possible. Each director
serves for a three-year term, and the classes are staggered so that one class is
elected each year. The Glacier board of directors sets the exact number of
directors by resolution. Currently, the Glacier board of directors has ten
directors. A Glacier director may be removed with cause by Glacier's
stockholders if a majority of the stockholders entitled to vote on the matter
vote in

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favor of removal at a meeting expressly called for that purpose. A Glacier
director may not be removed without cause.

        WesterFed's board of directors is similarly divided into three classes,
with an approximately equal number of directors in each class and with directors
serving staggered three-year terms. Currently there are nine members of
WesterFed's board of directors. The number of directors may be changed at any
time by a majority of the full board of directors. A WesterFed director may be
removed only for cause and only upon the affirmative vote of at least 80% of the
outstanding shares of WesterFed stock entitled to vote generally in the election
of directors.

INDEMNIFICATION AND LIMITATION OF LIABILITY

        Glacier's certificate of incorporation provides that the personal
liability of Glacier's directors and officers for monetary damages shall be
eliminated to the fullest extent permitted under Delaware law. Delaware law
permits the elimination and limitation of personal liability for directors,
provided that such provision shall not eliminate or limit the liability of a
director for liability arising from (i) any breach of the director's duty of
loyalty; (ii) acts or omissions not in good faith or which involve intentional
misconduct or a knowing violation of law; (iii) a director's approval of, or
assent to, certain distributions that violate Delaware law; or (iv) any
transaction from which the director derived an improper personal benefit.

        WesterFed's certificate of incorporation also provides for the
elimination of the personal liability of directors to the fullest extent allowed
under Delaware law.

        Glacier's bylaws provide that Glacier will indemnify any present or
former director, officer or employee, or any present or former director, officer
or employee of another business entity serving in such capacity at Glacier's
request, from any threatened, pending or completed action, suit or proceeding
against expenses (including attorney's fees), judgments, fines, excise taxes and
settlement amounts actually and reasonably incurred by such person to the
fullest extent permitted under Sections 145(a)-(d) of Delaware General
Corporation Law. Glacier will not be liable, however, for any settlement amounts
which are effected without Glacier's prior written consent, or any amounts
claimed in an action that was initiated by any person seeking indemnification
without Glacier's prior written consent. Reasonable expenses (including
attorney's fees) will be advanced to any person claiming indemnification, if
that person undertakes in writing to repay Glacier if it is ultimately
determined that the person is not entitled to indemnification. Glacier's
obligation to indemnify and advance expenses to persons covered by Glacier's
bylaw indemnification provisions will continue despite the subsequent amendment
or repeal of such provisions.

        WesterFed's certificate of incorporation provides similar
indemnification for present and past directors and officers.

POTENTIAL "ANTI-TAKEOVER" PROVISIONS

        Glacier's certificate of incorporation and Delaware law contain certain
provisions which may limit or prevent certain acquisitions. These provisions are
briefly summarized below.

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        1.     Glacier's Certificate of Incorporation.

        Glacier's certificate of incorporation includes certain provisions that
could make it more difficult for another party to acquire Glacier by means of a
tender offer, a proxy contest, merger or otherwise. These provisions include:

        -       a requirement that at least 80% of Glacier's outstanding voting
                stock approve certain business combinations (discussed in more
                detail below);

        -       an authorization to Glacier's board of directors allowing it to
                issue preferred stock (discussed in more detail below);

        -       the staggered terms of Glacier's board of directors (see "-
                Board of Directors" above); and

        -       restrictions on removal of directors which could limit changes
                in the composition of the Glacier board of directors (see "-
                Board of Directors" above).

        Article 9 of Glacier's certificate of incorporation contains detailed
provisions governing certain change-in-control transactions, including mergers
and consolidations, and significant sales of corporate assets, involving
business entities owning at least 10% of Glacier's outstanding voting stock, or
which have the opportunity, through beneficial ownership of the voting stock or
rights to acquire Glacier voting stock, to own or control at least 10% of
Glacier's voting stock. Other transactions treated as business combinations
under these change-in-control provisions are detailed in Section 9.1 of
Glacier's certificate of incorporation. All such business combinations must be
approved by at least 80% of Glacier's outstanding voting stock entitled to vote
generally in the election of directors, all of which will vote as one class,
with each share entitled to the number of votes that it is granted either under
the certificate of incorporation, or, if preferred stock, as designated by the
board of directors when the preferred shares were issued. The "super-majority"
voting requirement applies regardless of other requirements in Glacier's
certificate of incorporation and bylaws, lesser voting requirements provided by
applicable law, and requirements imposed under any agreement between Glacier and
any national securities exchange.

        The "super-majority" voting requirement does not apply to those business
combinations which meet all the criteria prescribed in Section 9.2 of Glacier's
certificate of incorporation. Some of these stringent criteria include the
approval of the business combination by directors unaffiliated with the Glacier
stockholder seeking the business combination, the payment of fair and adequate
consideration (based upon recent pricing history of Glacier's stock),
limitations on the form of consideration payable to Glacier's stockholders, and
Glacier's continuing ability to pay dividends of a consistent value on its
outstanding stock. Other requirements are detailed in Section 9.2 of Glacier's
certificate of incorporation.

        Glacier will provide any WesterFed stockholder with a copy of its
certificate of incorporation and/or bylaws. To obtain such documents, contact
Glacier at the address provided in "INFORMATION INCORPORATED BY REFERENCE."

        In addition, the authorization of preferred stock, which is intended
primarily as a financing tool and not as a defense against takeovers, may
potentially be used by the board of directors of Glacier to render more
difficult unsolicited attempts to acquire control of Glacier (e.g., by diluting
the ownership interest of a substantial stockholder, increasing the amount of
consideration necessary for a stockholder to obtain control, or selling
authorized but unissued shares to friendly third parties). The rights, powers
and preferences of any class(es) of preferred stock issued would be established
by the Glacier board of directors at the time such stock is authorized for
issuance, and could include voting rights. Additionally, any such

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class(es) of preferred stock may be entitled to voting rights in certain
circumstances, even if not specifically granted by Glacier, under Delaware law.

        The requirement of a super-majority vote of stockholders to approve
change-in-control transactions, the availability of Glacier's preferred stock
for issuance without stockholder approval, the staggered terms for Glacier's
directors (as described under "Board of Directors" above), provisions in
Glacier's certificate of incorporation permitting the removal of directors only
for cause and the Glacier board of directors' ability to expand the board of
directors' size and fill resulting vacancies, may have the effect of lengthening
the time required for a person to acquire control of Glacier through a tender
offer, proxy contest, the election of a majority of the Glacier board of
directors, or otherwise, and may deter any potential unfriendly offers or other
efforts to obtain control of Glacier. This could deprive Glacier's stockholders
of opportunities to realize a premium for their Glacier common stock and could
make removal of incumbent directors more difficult, even in circumstances where
the action was favored by a majority of Glacier's stockholders.

        2.     WesterFed's Certificate of Incorporation.

        WesterFed's certificate of incorporation contains anti-takeover
provisions that are similar to many of those contained in Glacier's certificate
of incorporation. Set forth below is a description of certain of the WesterFed
provisions.

        Blank Check Preferred Stock. The WesterFed board is authorized to the
same extent as the Glacier board to issue preferred stock and set the rights,
powers and preferences of such preferred stock.

        Classified Board. As noted above, like the Glacier board the WesterFed
board is divided into three classes with an approximately equal number of
directors in each class and directors elected for staggered three-year terms.
The effect of this provision is to prevent an insurgent stockholder waging a
proxy contest from gaining majority control of the board of directors at a
single annual meeting of stockholders.

        Removal of Directors. Like Glacier's certificate of incorporation and as
noted above, WesterFed's certificate of incorporation permits directors to be
removed only for cause and only by stockholders. The WesterFed provision differs
from the Glacier provision, however, in that the WesterFed provision requires
the approval of at least 80% of the stockholders to remove a director (versus a
majority under the Glacier provision).

        Certain Business Combinations. WesterFed's certificate of incorporation
provides that certain business combinations involving any 10% stockholder must
be approved by the holders of at least 80% of the voting power of the
then-outstanding shares of WesterFed stock entitled to vote in the election of
directors, unless (1) the business combination has been approved in advance by a
majority of the disinterested directors, or (2) certain fair price conditions
are met. If the requisite approval of the disinterested directors is given, or
the fair price conditions are met, the normal voting requirements of Delaware
law and WesterFed's certificate of incorporation would apply to the transaction
(i.e., a majority of the outstanding shares of WesterFed stock entitled to
vote). This provision is similar to the one contained in Article 9 of Glacier's
certificate of incorporation described above.

        Voting Limitation. WesterFed's certificate of incorporation provides
that any person who beneficially owns in excess of 10% of the outstanding shares
of WesterFed common stock may not vote the shares in excess of 10%. Glacier's
certificate of incorporation contains no such limitation.

                                       86
<PAGE>   94


        Anti-Greenmail Provision. WesterFed's certificate of incorporation
contains an "anti-greenmail" provision, which generally prohibits WesterFed from
purchasing any of its shares from any person who owns 5% or more of WesterFed's
voting stock without approval by 80% of the stockholders (excluding the seller).
No stockholder vote is required if the purchase is (1) part of a tender or
exchange offer made to all stockholders, (2) pursuant to an open market
repurchase program approved by a majority of the disinterested directors or (3)
made at no more than market price. Glacier's certificate of incorporation does
not contain an "anti-greenmail" provision.

        3.     Delaware Law.

        In addition to the provisions contained in Glacier's and WesterFed's
certificates of incorporation, Delaware's General Corporation Law contains an
anti-takeover statute which is described below.

        The Delaware statute prohibits business combinations with an interested
stockholder (i.e., a stockholder who owns at least 15% of the voting stock of a
corporation) for a period of three years following the time the stockholder
becomes an interested stockholder. Business combinations with an interested
stockholder are not prohibited, however, if:

        -       prior to that time the interested stockholder becomes an
                interested stockholder, the target corporation's board of
                directors approves in advance either the business combination or
                the transaction in which the stockholder becomes an interested
                stockholder;

        -       the stockholder acquires 85% or more of the outstanding voting
                stock in the same transaction in which the stockholder becomes
                interested; or

        -       the board of directors approves the business combination and at
                least two-thirds of the outstanding voting stock (excluding
                those shares held by the acquiring stockholder) approve the
                transaction by affirmative vote.

        These change-of-control provisions of the Delaware General Corporation
Law will not apply if:

        -       a corporation expressly elects not to follow them (neither
                Glacier nor WesterFed have so elected);

        -       a stockholder inadvertently becomes interested and divests his
                shares as soon as practicable; or

        -       the corporation has no stock listed on a national securities
                exchange, authorized for quotation on an inter dealer quotation
                system of a registered national securities association, or held
                of record by more than 2,000 stockholders. Because neither of
                them has "opted-out," both Glacier and WesterFed are subject to
                the Delaware statute. The merger of WesterFed with Glacier will
                not be prohibited under the statute because the WesterFed board
                of directors has approved the merger.

                              CERTAIN LEGAL MATTERS

        The validity of the Glacier stock to be issued in the merger will be
passed upon for Glacier by its counsel, Graham & Dunn, P.C., Seattle,
Washington. Graham & Dunn, P.C. and Silver, Freedman & Taff, L.L.P., counsel to
WesterFed also will give opinions concerning certain tax matters related to the
merger.

                                       87
<PAGE>   95

                                     EXPERTS

        The consolidated financial statements of Glacier as of December 31, 1999
and 1998, and for each of the years in the three-year period ended December 31,
1999, are incorporated by reference herein and in the Registration Statement
filed by Glacier in reliance upon the report of KPMG LLP, independent certified
public accountants, incorporated by reference herein, and upon the authority of
said firm as experts in accounting and auditing. KPMG's report, dated October
19, 2000, contains explanatory paragraphs indicating (i) that KPMG did not audit
either the 1997 or 1998 financial statements of Mountain West Bank acquired by
Glacier Bancorp, Inc. on February 4, 2000 in a pooling of interests; those
statements were audited by other auditors whose report has been furnished to
KPMG, and KPMG's opinion, insofar as it relates to the amounts included for
Mountain West Bank in the 1997 and 1998 consolidated financial statements of
Glacier Bancorp, Inc., is based solely on the report of the other auditors; and
(ii) the consolidated financial statements give retroactive effect to the merger
of Glacier Bancorp, Inc. and Mountain West Bank on February 4, 2000, which has
been accounted for as a pooling of interests.

        The audited financial statements as of March 31, 1999 and for the years
ended March 31, 1999 and 1998 of Mountain West Bank (a subsidiary of Glacier)
have been audited by PricewaterhouseCoopers LLP, independent accountants, whose
report thereon is incorporated by reference herein from Glacier's Current Report
on Form 8-K dated December 14, 2000. Such financial statements (not separately
presented), to the extent they have been included in the Glacier's financial
statements, have been so included in reliance on the report of such independent
accountants given on the authority of said firm as experts in auditing and
accounting.

        The consolidated financial statements of WesterFed as of December 31,
1999 and June 30, 1999 and for the six months ended December 31, 1999 and for
each of the years in the three-year period ended June 30, 1999 are incorporated
by reference herein and in the Registration Statement in reliance on the report
of KPMG LLP, independent certified public accountants, incorporated by reference
herein, and upon the authority of said firm as experts in accounting and
auditing.

                       WHERE YOU CAN FIND MORE INFORMATION

        Both Glacier and WesterFed file annual, quarterly and current reports,
proxy statements, and other information with the SEC. You may read and copy any
reports, statements, or other information that Glacier or WesterFed files at the
SEC's public reference room at 450 Fifth Street, N.W., Washington, D.C. 20549.
You can request copies of these documents, upon payment of a duplicating fee, by
writing the SEC. Please call the SEC at 1-800-SEC-0330 for further information
on the operation of the public reference rooms. Glacier's and WesterFed's SEC
filings are also available to the public on the SEC Internet site
(http://www.sec.gov). As described below under "INFORMATION INCORPORATED BY
REFERENCE," you may also obtain the documents that Glacier and WesterFed are
incorporating by reference into this prospectus/joint proxy statement from
Glacier or WesterFed.

        Glacier has filed a Registration Statement on Form S-4 (File No. 333-
______) to register with the SEC the Glacier common stock to be issued to
WesterFed stockholders in the merger. This prospectus/joint proxy statement is
part of that Registration Statement and constitutes a prospectus of Glacier in
addition to being a joint proxy statement of Glacier for the Glacier special
stockholders meeting and WesterFed for the WesterFed special stockholders
meeting. As allowed by SEC rules, this prospectus/joint proxy statement does not
contain all of the information that you can find in the Registration Statement
or the exhibits to the Registration Statement.

                                       88
<PAGE>   96

                      INFORMATION INCORPORATED BY REFERENCE

        The SEC allows Glacier and WesterFed to "incorporate by reference"
information into this prospectus/joint proxy statement, which means that Glacier
and WesterFed can disclose important information to you by referring you to
another document filed separately by Glacier and WesterFed with the SEC. The
information incorporated by reference is deemed to be part of this
prospectus/joint proxy statement, except for any information superseded by any
information in this prospectus/joint proxy statement.

        This prospectus/joint proxy statement incorporates by reference the
documents set forth below that Glacier has previously filed with the SEC. These
documents contain important information about Glacier and its finances:

        -       Annual Report on Form 10-K for the year ended December 31, 1999
                (the document incorporated by this reference is the copy filed
                with Form TH, filed with the SEC on March 31, 2000, and not the
                version filed via EDGAR on April 4, 2000);

        -       Quarterly Reports on Form 10-Q for the quarters ended March 31,
                2000; June 30, 2000 and September 30, 2000;

        -       Proxy Statement for Glacier's 2000 Annual Meeting of
                Stockholders;

        -       Current Report on Form 8-K filed on December 14, 2000, which
                restates our audited financial statements as of December 31,
                1999 and 1998 and for each of the years in the three year period
                ended December 31, 1999, to reflect a pooling of interests
                transaction consummated on February 4, 2000; and

        -       Current Reports on Form 8-K filed on February 11, 2000, and
                September 27, 2000.

        As described in "INFORMATION CONCERNING GLACIER," information filed with
the SEC prior to July 8, 1998 was filed by, and describes, "Original Glacier,"
Glacier's predecessor corporation.

        Glacier is also incorporating by reference additional documents that
Glacier files with the SEC between the date of this prospectus/joint proxy
statement and the date of the later to occur of the special meeting of
stockholders of Glacier and the special meeting of stockholders of WesterFed.

        This prospectus/joint proxy statement also incorporates by reference the
documents set forth below that WesterFed has previously filed with the SEC.
These documents contain important information about WesterFed:

        -       Annual Report on Form 10-K for the six months ended December 31,
                1999;

        -       Quarterly Reports on Form 10-Q for the quarters ended March 31,
                2000, June 30, 2000 and September 30, 2000;

        -       Proxy statement for WesterFed's 2000 Annual Meeting of
                Stockholders;

        -       Current Reports on Form 8-K filed on February 18, 2000, April
                11, 2000, April 20, 2000, August 8, 2000, September 27, 2000 and
                September 29, 2000.

                                       89
<PAGE>   97

        WesterFed also is incorporating by reference the additional documents it
files with the SEC between the date of this prospectus/joint proxy statement and
the date of the later to occur of the special meeting of stockholders of Glacier
and the special meeting of stockholders of WesterFed.

        You can obtain the documents that are incorporated by reference through
Glacier, WesterFed or the SEC. You can obtain the documents from the SEC, as
described above under "WHERE YOU CAN FIND MORE INFORMATION". These documents are
also available from Glacier or WesterFed, as appropriate, without charge,
excluding exhibits unless Glacier or WesterFed has specifically incorporated
such exhibits by reference in this prospectus/joint proxy statement.

        You may obtain documents incorporated by reference in this
prospectus/joint proxy statement by requesting them from Glacier at 49 Commons
Loop, Kalispell, Montana 59901, telephone number (406) 756-4263, ATTN: James H.
Strosahl. If you would like to request documents from Glacier, please do so by
_________, 2001 to receive them before the Glacier and WesterFed special
stockholders meetings.

        You may obtain documents incorporated by reference in this
prospectus/joint proxy statement by requesting them from WesterFed at 110 East
Broadway, Missoula, Montana 59806, telephone number (406) 721-5254, ATTN: Marcia
L. Johnson, Secretary. If you would like to request documents from WesterFed,
please do so by _________, 2001 to receive them before the Glacier and WesterFed
special stockholders meetings.

        Glacier has supplied all of the information concerning it contained in
this prospectus/joint proxy statement, and WesterFed has supplied all of the
information concerning it.

        YOU SHOULD RELY ONLY ON THE INFORMATION CONTAINED OR INCORPORATED BY
REFERENCE IN THIS PROSPECTUS/JOINT PROXY STATEMENT IN DECIDING HOW TO VOTE ON
THE ADOPTION OF THE MERGER AGREEMENT. WE HAVE NOT AUTHORIZED ANYONE TO PROVIDE
YOU WITH INFORMATION OTHER THAN WHAT IS CONTAINED IN THIS PROSPECTUS/JOINT PROXY
STATEMENT. THIS PROSPECTUS/JOINT PROXY STATEMENT IS DATED _____________, 2000.
YOU SHOULD NOT ASSUME THAT INFORMATION CONTAINED IN THIS PROSPECTUS/JOINT PROXY
STATEMENT IS ACCURATE AS OF ANY OTHER DATE, AND NEITHER THE MAILING OF THIS
PROSPECTUS/JOINT PROXY STATEMENT TO GLACIER AND WESTERFED STOCKHOLDERS NOR THE
ISSUANCE OF GLACIER COMMON STOCK IN THE MERGER WILL CREATE ANY IMPLICATION TO
THE CONTRARY.

                                  OTHER MATTERS

        Neither the Glacier nor WesterFed board of directors is aware of any
business to come before the Glacier or WesterFed special stockholders meetings,
other than those matters described above in this prospectus/joint proxy
statement. However, if any other matters should properly come before the
meetings, it is intended that proxies in the accompanying forms will be voted on
such matters in accordance with the judgment of the persons voting the proxies;
however, proxies which are voted against the adoption of the merger agreement
will not be voted in favor of an adjournment or postponement of the special
stockholders meeting for the purpose of soliciting further proxies for adoption
of the merger agreement.

                                       90
<PAGE>   98

WESTERFED

        WesterFed does not plan to hold a 2001 annual meeting of stockholders
because WesterFed will cease to exist upon completion of the merger. If
WesterFed does hold a 2001 annual meeting of stockholders, stockholders
submitting proposals for business at that meeting must comply with the deadlines
set forth below.

        In order to be eligible for inclusion in WesterFed's proxy materials for
its 2001 annual meeting of stockholders, any stockholder proposal to take action
at such meeting must be received at WesterFed's main office, located at 110 East
Broadway, Missoula, Montana 59802, no later than December 26, 2000. Any proposal
submitted will be subject to the requirements of the proxy rules adopted under
the Securities Exchange Act of 1934, and, as with any stockholder proposal
(regardless of whether included in WesterFed's proxy materials), WesterFed's
certificate of incorporation and bylaws and Delaware law. Under the proxy rules,
if WesterFed receives notice of a stockholder proposal to take action at the
2001 annual meeting that is not submitted for inclusion in WesterFed's proxy
materials, the persons named in the form of proxy sent by WesterFed to its
stockholders will have the discretion to vote on the proposal in accordance with
their best judgment if notice of the proposal is not received at WesterFed's
main office by 30 days before the date of the meeting.

GLACIER

        Proposals of Glacier stockholders intended to be presented at Glacier's
2001 annual meeting of stockholders must have been received by the Secretary of
Glacier before December 1, 2000 in order to be considered for inclusion in
Glacier's proxy statement and form of proxy for that meeting. If such a proposal
is in compliance with all of the requirements of Rule 14a-8 under the Securities
Exchange Act of 1934, it will be included in the Glacier's proxy statement and
set forth on the form of proxy for Glacier's 2001 annual meeting of
stockholders. In addition, if Glacier receives notice of a stockholder proposal
after February 14, 2001, the persons named as proxies in Glacier's 2001 annual
meeting proxy statement and form of proxy will have authority to vote on such
stockholder proposal at the 2001 annual meeting in their discretion, without any
discussion of the proposal in Glacier's proxy statement or mention of the
proposal on Glacier's form of proxy.

                                       91
<PAGE>   99

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


                              AMENDED AND RESTATED

                          PLAN AND AGREEMENT OF MERGER

                                     BETWEEN

                              GLACIER BANCORP, INC.

                                       AND

                         WESTERFED FINANCIAL CORPORATION


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




                         DATED AS OF SEPTEMBER 20, 2000




                                      A-1
<PAGE>   100


                               AMENDED & RESTATED
                          PLAN AND AGREEMENT OF MERGER
                                     BETWEEN
                              GLACIER BANCORP, INC.
                                       AND
                         WESTERFED FINANCIAL CORPORATION

        This Plan and Agreement of Merger (the "Agreement"), dated as of
September 20, 2000, is between GLACIER BANCORP, INC. ("Glacier") and WESTERFED
FINANCIAL CORPORATION ("WesterFed").

                                    PREAMBLE

        The management and boards of directors of Glacier and WesterFed,
respectively, believe that the proposed transaction between Glacier and
WesterFed, on the terms and conditions set forth in this Agreement, is in the
best interests of Glacier's and WesterFed's shareholders.

                                    RECITALS

A.      THE PARTIES. The parties to the Merger are as follows:

        (1)    Glacier is a corporation duly organized and validly existing
               under Delaware law and is a registered bank holding company under
               the Bank Holding Company Act of 1956, as amended ("BHCA").
               Glacier's principal office is located in Kalispell, Montana.
               Glacier owns (1) all of the outstanding common stock of Mountain
               West Bank, Glacier Bank, First Security Bank of Missoula, Valley
               Bank of Helena, and Big Sky Western Bank; and (2) more than 90%
               of the outstanding common stock of Glacier Bank of Whitefish and
               Glacier Bank of Eureka, respectively.

        (2)    WesterFed is a corporation duly organized and validly existing
               under Delaware law, and is a registered savings and loan holding
               company under the Home Owners' Loan Act, as amended ("HOLA").
               WesterFed's principal offices are located in Missoula, Montana.
               WesterFed owns all of the outstanding common stock of Western
               Security Bank ("the Bank").

B.      THE MERGER. On the Effective Date, all of the outstanding shares of
        WesterFed common stock (other than Dissenting Shares and Exception
        Shares) will be exchanged for shares of Glacier common stock, cash, or a
        combination of both, and WesterFed will be merged (the "Merger") with
        and into Glacier in accordance with the applicable corporation law of
        the State of Delaware, with Glacier continuing as the surviving entity
        in the Merger, and the Bank will become a wholly-owned subsidiary of
        Glacier.

C.      BOARD APPROVALS. Glacier's and WesterFed's respective boards of
        directors have deemed the Merger advisable, and have approved this
        Agreement and authorized its execution and delivery.


                                      A-2
<PAGE>   101

D.      OTHER APPROVALS. The Merger is subject to:

        (1)    satisfaction of the conditions described in Section 5 of this
               Agreement or waiver by a party of those conditions that may be
               waived by it; and

        (2)    each approval required by Section 5.1 of this Agreement being
               granted and all applicable waiting periods having expired.

E.      EMPLOYMENT AGREEMENTS. Glacier has entered into employment agreements as
        of the date hereof but to become effective as of the Effective Date with
        Ralph K. Holliday, President and Chief Executive Officer of WesterFed
        and the Bank; James A. Salisbury, Executive Vice President, Treasurer
        and Chief Financial Officer of WesterFed and the Bank; Marcia Johnson,
        Senior Vice President - Central Operations Manager of the Bank; Barry
        Johnston, Senior Vice President - Credit Administration of the Bank and
        John Cromwell, Senior Vice President - Human Resources of the Bank.

F.      VOTING AGREEMENTS. In association with the parties' execution of this
        Agreement, the directors and executive officers of WesterFed (other than
        David W. Jorgenson) and Glacier have entered into agreements,
        substantially in the form attached to this Agreement as Exhibit A,
        pursuant to which, among other things, each such individual has agreed
        to vote his or her shares of WesterFed or Glacier common stock,
        whichever is applicable, in favor of the actions contemplated by this
        Agreement.

G.      FAIRNESS OPINIONS. WesterFed has received from Putnam Lovell Securities,
        Inc. ("Putnam Lovell") a written opinion to the effect that the Merger
        Consideration to be received in the Merger is fair to the shareholders
        of WesterFed from a financial point of view, a copy of which has been
        provided to Glacier. As a condition to Closing of the Transaction,
        Putnam Lovell will update this fairness opinion immediately before
        WesterFed mails the Prospectus/Proxy Statement to its shareholders.
        Glacier has received from D.A. Davidson & Co. ("Davidson") a written
        opinion to the effect that the Merger Consideration to be paid by
        Glacier in connection with the Merger is fair to the shareholders of
        Glacier from a financial point of view, a copy of which has been
        provided to WesterFed. As a condition to Closing of the Transaction,
        Davidson will update the fairness opinion immediately before Glacier
        mails the Prospectus/Proxy Statement to its shareholders.

H.      INTENTION OF THE PARTIES - ACCOUNTING AND TAX TREATMENT. The parties
        intend the Merger to be treated for accounting purposes as a "purchase."
        The parties intend the Merger to qualify, for federal income tax
        purposes, as a tax-free reorganization under Section 368(a) of the
        Internal Revenue Code of 1986, as amended ("IRC").

I.      STOCK OPTION AGREEMENT. As an inducement to and condition of Glacier's
        execution of this Agreement, WesterFed has approved the grant of an
        option to Glacier under the Stock Option Agreement, as provided in
        Section 1.15.


                                      A-3
<PAGE>   102


                                    AGREEMENT

Glacier and WesterFed agree as follows:

                                    SECTION 1
                              TERMS OF TRANSACTION

1.1     TRANSACTION. Under and subject to this Agreement and the other documents
        referred to in this Agreement, WesterFed will be merged with and into
        Glacier in accordance with the applicable corporation law of the State
        of Delaware ("Corporate Law"). The Merger will become effective on the
        date ("Effective Date") and at the time the Certificate of Merger is
        accepted for filing by the Secretary of the State of Delaware. The term
        "Transaction" means the Merger transaction contemplated by this
        Agreement, subject to any modifications Glacier elects in accordance
        with Section 1.14.

1.2     EFFECT OF TRANSACTION. On the Effective Date, the corporate existence of
        WesterFed will be merged into and continued in Glacier (sometimes
        referred to as the "Combined Corporation"). The name of the Combined
        Corporation will be "Glacier Bancorp, Inc." The principal office of the
        Combined Corporation will be located in Kalispell, Montana. The
        Certificate of Incorporation and the Bylaws of the Combined Corporation
        will be the Certificate of Incorporation and the Bylaws of Glacier in
        effect immediately before the Effective Date. The directors of the
        Combined Corporation will be the persons who were the directors of
        Glacier immediately prior to the Effective Date with the addition of
        Ralph K. Holliday. The officers of the Combined Corporation will be the
        officers of Glacier and WesterFed immediately prior to the Effective
        Date. Consistent with Corporate Law, all rights, franchises and
        interests of each of Glacier and WesterFed in and to every type of
        property (real, personal and mixed) and choses in action will be
        transferred to and vested in the Combined Corporation by virtue of the
        Merger without any deed or other transfer, and the Combined Corporation,
        upon the Effective Date and without any order or other action on the
        part of any court of otherwise, will hold and enjoy all rights of
        property, franchises, and interests in the same manner and to the same
        extent as such rights, franchises and interests were held or enjoyed by
        each of Glacier and WesterFed immediately prior to the Effective Date.

1.3     CONSIDERATION. Subject to the provisions of this Agreement, on the
        Effective Date, by virtue of the Merger and without any action on the
        part of Glacier or WesterFed, each share of WesterFed Common Stock
        issued and outstanding immediately prior to the Effective Date (other
        than Dissenting Shares and Excluded Shares) will, automatically and
        without any action on the part of the holder of such share, be converted
        into the right to receive from Glacier consideration (the "Merger
        Consideration") consisting of either cash, stock, or a combination of
        both, subject to the provisions of Subsections 1.6.4 and 1.6.5.


                                      A-4
<PAGE>   103

1.4     PRICE.

        1.4.1  DEFINITIONS. For purposes of this Agreement, the following terms
               will have the meanings set forth below:

               (a)    "Aggregate Merger Consideration" means the sum of (i) the
                      Calculated Cash Consideration and (ii) the Calculated
                      Stock Consideration.

               (b)    "Average Closing Price" means the average, rounded to the
                      second decimal (rounding down if the third decimal is four
                      or less and rounding up if the third decimal is five or
                      more), of the daily closing price per share of Glacier
                      Common Stock as reported on the Nasdaq National Market or
                      such successor exchange on which Glacier Common Stock may
                      then be traded (as reported in the Wall Street Journal or,
                      if not reported therein, in another mutually agreed upon
                      authoritative source) for 20 consecutive trading days
                      ending on the Determination Date. The "Determination Date"
                      means the date occurring 15 trading days prior to the
                      Effective Date.

               (c)    "Calculated Cash Consideration" means (i) $9.05, if the
                      Average Closing Price is equal to or greater than $9.90,
                      or (ii) $10.04 if the Average Closing Price is less than
                      $9.00.

               (d)    "Calculated Stock Consideration" means (i) the Exchange
                      Ratio multiplied by (ii) the Average Closing Price.

               (e)    "Exchange Ratio" is 1.1.

               (f)    "Final Exchange Ratio" means the quotient, rounded to the
                      nearest ten-thousandth, obtained by dividing the Per Share
                      Consideration by the Average Closing Price.

               (g)    "Per Share Consideration" has the following meanings:

                      (1)    AVERAGE CLOSING PRICE GREATER THAN $9.90. If the
                             Average Closing Price of Glacier Common Stock is
                             greater than or equal to $9.90, then the Per Share
                             Consideration will be the Aggregate Merger
                             Consideration;

                      (2)    AVERAGE CLOSING PRICE BETWEEN $9.00 AND $9.90. If
                             the Average Closing Price of Glacier Common Stock
                             is less than $9.90 and greater than or equal to
                             $9.00, then the Per Share Consideration will be
                             $19.94.

                      (3)    AVERAGE CLOSING PRICE LESS THAN $9.00. If the
                             Average Closing Price of Glacier Common Stock is
                             less than $9.00, then the Per Share Consideration
                             will be the Aggregate Merger Consideration, unless
                             Glacier timely makes the election contemplated by
                             Section 7.2.7, in which case the Per Share
                             Consideration will be $19.94.


                                      A-5
<PAGE>   104

        1.4.2  MERGER CONSIDERATION. The Merger Consideration to be received by
               the holder for each share of WesterFed Common Stock will be:

               (a)    a number of shares of Glacier Common Stock equal to the
                      Final Exchange Ratio ("Stock Distribution"), or

               (b)    cash in an amount equal to the Per Share Consideration
                      ("Cash Distribution).

1.5     EFFECT ON GLACIER COMMON STOCK. Glacier Common Stock shares issued and
        outstanding immediately before the Effective Date will remain
        outstanding and unchanged after the Merger.

1.6     CONVERSION ELECTION PROCEDURES AND ALLOCATION.

        1.6.1  ELECTION OPTIONS. Subject to the election and allocation
               procedures set forth in this Section 1.6, each record holder of
               WesterFed Common Stock as of the Election Deadline will be
               entitled to elect to receive (i) the Cash Distribution for all or
               a portion of the holder's shares of WesterFed Common Stock ("Cash
               Election Shares") or (ii) the Stock Distribution for all or a
               portion of the holder's shares of WesterFed Common Stock ("Stock
               Election Shares"). All such elections shall be made on a form
               mutually agreed to by Glacier and WesterFed for that purpose
               ("Form of Election"). Glacier and WesterFed will mail the Form of
               Election at least 25 days prior to the Election Deadline to all
               persons who are record holders of WesterFed Common Stock on the
               fifth day prior to the date of the mailing of the Form of
               Election, and will use commercially reasonable efforts to make
               the Form of Election available to all persons who become holders
               of WesterFed Common Stock subsequent to such date and no later
               than the close of business on the Business Day immediately prior
               to the Election Deadline.

        1.6.2  EFFECTIVE ELECTION. Any election for the purposes of this Section
               1.6 will be effective only if the Exchange Agent has received a
               properly completed and signed Form of Election with the
               associated certificate(s) representing shares of WesterFed Common
               Stock by the Election Deadline. The "Election Deadline" means
               7:00 p.m., Mountain Time, on the date anticipated by the parties
               to be the Effective Date. A Form of Election may be revoked or
               changed by the person submitting such Form of Election or any
               other person to whom the subject shares are subsequently
               transferred by written notice by such person to the Exchange
               Agent at or prior to the Election Deadline. All Forms of
               Elections will be deemed to be revoked if the Exchange Agent is
               notified in writing by either Glacier or WesterFed that this
               Agreement has been terminated in accordance with its terms and
               the Exchange Agent shall promptly return certificates
               representing shares of WesterFed Common Stock to those persons
               who submitted such certificates to the Exchange Agent.


                                      A-6
<PAGE>   105

        1.6.3  NON-ELECTION; DISCRETION OF EXCHANGE AGENT. Any holder of
               WesterFed Common Stock who does not submit a properly completed
               and signed Form of Election (along with all associated WesterFed
               stock certificates) that is received by the Exchange Agent at or
               prior to the Election Deadline, and any holder who has failed to
               perfect or has effectively withdrawn or lost the right to payment
               for Dissenting Shares, will be deemed to hold "Non-Election
               Shares" for the purposes of Section 1.6.5. Glacier will have the
               discretion, which it may delegate in whole or in part to the
               Exchange Agent, to determine whether Forms of Election have been
               properly completed and signed, and to disregard immaterial
               defects in Forms of Election. If Glacier or the Exchange Agent
               determines that any purported election for Cash Election Shares
               or Stock Election Shares was not properly made, such purported
               election will be deemed to be of no force and effect and the
               holder making such election will be deemed to have Non-Election
               Shares for the purposes of Section 1.6.5. The decision of Glacier
               or the Exchange Agent as to such matters will be conclusive and
               binding. Neither Glacier nor the Exchange Agent will be under any
               obligation to notify any holder of any defect in a Form of
               Election submitted to the Exchange Agent.

        1.6.4  MAXIMUM STOCK AND CASH CONVERSION AMOUNTS.

        (a)    MAXIMUM STOCK ELECTION AMOUNT. The maximum number of shares of
               WesterFed Common Stock to be converted into the right to receive
               Glacier Common Stock in the Merger (the "Calculated Stock
               Election Number") will be the Exchange Ratio multiplied by the
               number of shares of WesterFed Common Stock that are issued and
               outstanding immediately prior to the Effective Date divided by
               the Final Exchange Ratio.

        (b)    MAXIMUM CASH ELECTION AMOUNT. The maximum number of shares of
               WesterFed Common Stock to be converted into the right to receive
               cash in the Merger (the "Calculated Cash Election Number") will
               be such number of Cash Election Shares that when aggregated with
               the Dissenting Shares equals the lesser of the quotient (rounded
               up to the next whole number) obtained by dividing the Per Share
               Consideration into (i) $41.3 million or (ii) 55% of the Total
               Merger Consideration. For the purposes of this provision, "Total
               Merger Consideration" means the product of (A) the Aggregate
               Merger Consideration, with the Calculated Stock Consideration
               portion thereof being determined based upon the assumption that
               the Average Closing Price is the closing price of Glacier Common
               Stock on the Effective Date, and if the Effective Date is not a
               trading date, then the closing price on the most recent trading
               day prior to the Effective Date, multiplied by (B) the total
               number of shares of WesterFed Common Stock issued and outstanding
               on the Effective Date.

(c) EXCESS CASH OR STOCK ELECTIONS. If the application of the provisions of
Subsections 1.6.1, 1.6.2, and 1.6.3 would otherwise result in aggregate Cash
Distributions or aggregate Stock Distributions in excess of the limits set forth
in this Subsection 1.6.4, then the Cash Distributions and Stock Distributions
will be allocated in the manner set forth in Subsection 1.6.5.


                                      A-7
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        1.6.5  ALLOCATION. As soon as practicable after the Effective Date,
               Glacier will cause the Exchange Agent to allocate among the
               holders of WesterFed Common Stock the rights to receive the Cash
               Distribution or the Stock Distribution as follows:

               (a)    EXCESS CASH ELECTION SHARES. If the number of Cash
                      Election Shares exceeds the Calculated Cash Election
                      Number, then:

                      (1)    Each Stock Election Share will be converted into
                             the right to receive the Stock Distribution;

                      (2)    Each Non-Election Share will be converted into the
                             right to receive the Stock Distribution; and

                      (3)    The Exchange Agent will reallocate the Merger
                             Consideration payable to each holder of Cash
                             Election Shares pro rata (based upon the number of
                             Cash Election Shares owned by such holder, as
                             compared with the total number of Cash Election
                             Shares owned by all holders) such that the holders
                             of Cash Election Shares will receive an amount of
                             Cash Distributions that, in the aggregate, will be
                             equal to the product of the Calculated Cash
                             Election Number multiplied by the Per Share
                             Consideration and will receive the remainder of the
                             Merger Consideration due to them as Stock
                             Distributions.

               (b)    EXCESS STOCK ELECTION SHARES. If the number of Stock
                      Election Shares exceeds the Calculated Stock Election
                      Number, then:

                      (1)    Each Cash Election Share will be converted into the
                             right to receive the Cash Distribution;

                      (2)    Each Non-Election Share will be converted into the
                             right to receive the Cash Distribution; and

                      (3)    The Exchange Agent will reallocate the Merger
                             Consideration payable to each holder of Stock
                             Election Shares pro rata (based upon the number of
                             Stock Election Shares owned by such holder, as
                             compared with the total number of Stock Election
                             Shares owned by all holders) such that the holders
                             of Stock Election Shares will receive, as Stock
                             Distributions, a number of shares of Glacier Common
                             Stock equal to the product of the Calculated Stock
                             Election Number multiplied by the Final Exchange
                             Ratio, and will receive the remainder of the Merger
                             Consideration due to them as Cash Distributions.

               (c)    NO EXCESS. If neither of Subsections (a) or (b) above is
                      applicable, all Cash Election Shares will be converted
                      into the right to receive the Cash Distribution, all Stock
                      Election Shares will be converted into the right to
                      receive the Stock Distribution, and the Non-Election
                      Shares will be


                                      A-8
<PAGE>   107


                      converted into the right to receive the Cash Distribution
                      and/or the Stock Distribution as follows:

                      (1)    Non-Election Shares shall first be converted to a
                             right to receive the Cash Distribution until the
                             aggregate of the Non-Election Shares and Cash
                             Election Shares equals the Calculated Cash Election
                             Number.

                      (2)    Any excess Non-Election Shares shall then be
                             converted to a right to receive the Stock
                             Distribution.

                      (3)    All allocations pursuant to this Subsection (c)
                             shall be made on a pro rata basis, if applicable.

               (d)    PRO RATA COMPUTATIONS. The pro rata computations performed
                      by the Exchange Agent pursuant to this Subsection 1.6.5
                      shall be binding and conclusive as to the allocation of
                      the Merger Consideration among the holders of WesterFed
                      Common Stock.

1.7     CONVERSION OF WESTERFED OPTIONS. On the Effective Date, by virtue of the
        Merger, and without any action on the part of any holder of a WesterFed
        Option, each WesterFed Option that is then outstanding and unexercised
        will be converted into and become an option to purchase Glacier Common
        Stock ("Assumed Option") on the same terms and conditions as are in
        effect with respect to the WesterFed Option immediately prior to the
        Effective Date, except that (A) each such Assumed Option may be
        exercised solely for shares of Glacier Common Stock, (B) the number of
        shares of Glacier Common Stock subject to such Assumed Option will be
        equal to the number of shares of WesterFed Common Stock subject to such
        Option immediately prior to the Effective Date multiplied by the Final
        Exchange Ratio, the product being rounded, if necessary, up or down to
        the nearest whole share, and (C) the per share exercise price under each
        such Assumed Option will be adjusted by dividing the per share exercise
        price of the WesterFed Option by the Final Exchange Ratio, and rounding
        up or down to the nearest cent. It is intended that the foregoing
        assumption shall be undertaken consistent with and in a manner that will
        not constitute a "modification" under Section 424 of the IRC as to any
        WesterFed Option which is an "incentive stock option". The number of
        shares of WesterFed Common Stock subject to WesterFed Options (whether
        vested or unvested) as of the date of this Agreement are set forth on
        Schedule 3.1.3(b)(2)-W.

1.8     SHAREHOLDER RIGHTS; STOCK TRANSFERS. On the Effective Date, holders of
        WesterFed Common Stock will cease to be, and will have no rights as,
        shareholders of WesterFed, other than to receive the Merger
        Consideration provided under Section 1.3 or payment under Section 1.10.
        After the Election Deadline, there will be no transfers on the stock
        transfer books of WesterFed or the Combined Corporation of the shares of
        WesterFed Common Stock that were issued and outstanding immediately
        prior to the Election Deadline, other than Non-Election Shares which may
        be transferred at any time prior to the Effective Date.


                                      A-9
<PAGE>   108


1.9     FRACTIONAL SHARES. Notwithstanding any other provision of this
        Agreement, no fractional shares of Glacier Common Stock and no
        certificates or scrip for, or other evidence of ownership of fractional
        shares, will be issued in the Merger. Glacier will pay to each holder of
        WesterFed Common Stock who would otherwise be entitled to a fractional
        share of Glacier Common Stock an amount in cash determined by
        multiplying such fraction by the closing price per share of Glacier
        Common Stock on the Nasdaq National Market (or any successor exchange)
        on the Effective Date, or if the Effective Date is not a trading day,
        then the closing price on the most recent trading day prior to the
        Effective Date.

1.10    PAYMENT TO DISSENTING SHAREHOLDERS. For the purposes of this Agreement,
        "Dissenting Shares" means any shares of WesterFed Common Stock held by a
        holder who dissents from the Merger in accordance with the Corporate Law
        and becomes entitled to obtain payment for the fair value of such shares
        of WesterFed Common Stock pursuant to the applicable provisions of the
        Corporate Law. Notwithstanding any other provision of this Agreement,
        any Dissenting Share will not, after the Effective Date, be entitled to
        vote for any purpose or receive any dividends or other distributions and
        will be entitled only to such rights as are accorded to Dissenting
        Shares by the Corporate Law.

1.11    EXCHANGE PROCEDURES.

        1.11.1 SURRENDER OF CERTIFICATE. As promptly as practicable after the
               Effective Date, Glacier will send or cause to be sent to each
               former shareholder of WesterFed of record immediately prior to
               the Effective Date (other than with respect to Dissenting Shares,
               Excluded Shares and holders who tendered their certificates with
               their Forms of Election pursuant to Section 1.6.2) instructions
               for exchanging such shareholder's certificates for WesterFed
               Common Stock for the Merger Consideration set forth in Section
               1.3. WesterFed shareholders will exchange WesterFed Common Stock
               certificates by surrendering them to the exchange agent appointed
               by Glacier (the "Exchange Agent"), in accordance with the
               instructions provided by the Exchange Agent and together with a
               properly completed and executed form of transmittal letter. Until
               a holder's certificate evidencing WesterFed Common Stock is so
               surrendered, the holder will not be entitled to receive any
               Merger Consideration with respect thereto.

        1.11.2 ISSUANCE OF MERGER CONSIDERATION IN OTHER NAMES. Any person
               requesting that any Merger Consideration be issued (or paid) in a
               name other than the name in which the surrendered WesterFed
               Common Stock certificate is registered, must: (1) establish to
               the Exchange Agent's satisfaction the right to receive the Merger
               Consideration and (2) either pay to the Exchange Agent any
               applicable transfer or other taxes or establish to the Exchange
               Agent's satisfaction that all applicable taxes have been paid or
               are not required.

        1.11.3 LOST, STOLEN, AND DESTROYED CERTIFICATES. The Exchange Agent will
               be authorized to issue the Merger Consideration in exchange for a
               WesterFed Common Stock certificate that has been lost, stolen or
               destroyed, if the holder provides the Exchange Agent with: (1)
               satisfactory evidence that the holder owns


                                      A-10
<PAGE>   109

               the WesterFed Common Stock represented by the certificate and
               that the certificate is lost, stolen, or destroyed, (2) any
               appropriate affidavit the Exchange Agent may require, and (3) any
               indemnification assurances that the Exchange Agent may require.

        1.11.4 RIGHTS TO DIVIDENDS AND DISTRIBUTIONS. In the case of WesterFed
               Common Stock to be exchanged for the Stock Distribution, until
               the holder properly surrenders for exchange his/her certificates
               for WesterFed Common Stock, no dividends or other distributions
               payable to the holders of Glacier Common Stock shall be paid
               thereon. Surrender of WesterFed Common Stock certificates will
               not deprive the holder of any dividends or distributions that the
               holder is entitled to receive as a record holder of WesterFed
               Common Stock on a date before the Effective Date. When the holder
               surrenders his or her certificates, the holder will receive the
               amount, without interest, of any dividends and any other
               distributions distributed on or after the Effective Date on the
               whole number of shares of Glacier Common Stock into which the
               holder's WesterFed Common Stock was converted at the Effective
               Date.

        1.11.5 DELIVERY OF MERGER CONSIDERATION TO EXCHANGE AGENT. Within three
               days after the Effective Date, Glacier shall deliver to the
               Exchange Agent the aggregate Merger Consideration to be paid for
               all of the issued and outstanding shares of WesterFed Common
               Stock other than Dissenting and Excluded Shares. On an
               as-required basis, Glacier shall promptly and timely tender to
               the Exchange Agent additional cash funds required for the payment
               of cash in lieu of fractional shares. The Merger Consideration
               remaining in the hands of the Exchange Agent for non-surrendered
               certificates representing shares of WesterFed Common Stock shall
               be returned to Glacier at the expiration of six months from the
               Effective Date.

        1.11.6 AFFILIATES' CERTIFICATES. Certificates surrendered for exchange
               by any person constituting an "affiliate" of WesterFed for
               purposes of Rule 145 of the Securities Act will not be exchanged
               for certificates representing Glacier Common Stock until Glacier
               has received a written agreement from such person as specified in
               Section 4.4.

1.12    MERGER CONSIDERATION ADJUSTMENTS. If, prior to the Effective Date,
        shares of Glacier Common Stock shall be changed into a different number
        of shares or a different class of shares by reason of any
        reclassification, recapitalization, split-up, combination, exchange of
        shares or readjustment, or there occurs a distribution of warrants or
        rights with respect to Glacier Common Stock, or a stock dividend, stock
        split or other general distribution of Glacier Common Stock is declared
        with a record date prior to the Effective Date, then in any such event
        the Exchange Ratio shall be appropriately adjusted.

1.13    EXCEPTION SHARES. "Exception Shares" mean any shares of WesterFed Common
        Stock held by Glacier or any of its Subsidiaries or WesterFed or any of
        its Subsidiaries, in any case other than in a fiduciary capacity or as a
        result of debts previously contracted. Each of the Exception Shares of
        WesterFed Common Stock will be canceled and retired upon consummation of
        the Merger, and no consideration shall be issued in exchange therefor.


                                      A-11
<PAGE>   110

1.14    RESERVATION OF RIGHT TO REVISE STRUCTURE. In its sole discretion, and
        notwithstanding any other provision in this Agreement to the contrary,
        Glacier may at any time change the method of effecting the Transaction;
        provided, however, that (A) no such change will alter or change the
        amount or kind of consideration to be issued to holders of WesterFed
        Common Stock as provided for in this Agreement, (B) no such change will
        adversely affect the tax treatment to WesterFed shareholders as a result
        of receiving such consideration, (C) no such change will materially
        impede or delay the consummation of the Transaction and (D) no such
        change shall diminish the benefits to be received by the directors,
        officers or employees of WesterFed or the Bank set forth in this
        Agreement or in any other agreement entered into by the parties in
        connection with the Transaction. If Glacier elects to change the method
        of effecting the Transaction, WesterFed and the Bank will cooperate with
        and assist Glacier with any necessary amendment to this Agreement, and
        with the preparation and filing of such applications, documents,
        instruments and notices as may be necessary or desirable, in the opinion
        of counsel for Glacier, to obtain all necessary shareholder approvals
        and approvals of any regulatory agency, administrative body or other
        governmental entity.

1.15    STOCK OPTION AGREEMENT. As a condition to execution of this Agreement,
        Glacier and WesterFed have executed a Stock Option Agreement, dated the
        same date as this Agreement, a copy of which is attached as Exhibit B.

                                    SECTION 2
                           CLOSING OF THE TRANSACTION

2.1     CLOSING. Closing will occur on the Effective Date. If Closing does not
        occur on or before June 30, 2001 ("Termination Date"), either Glacier or
        WesterFed may terminate this Agreement in accordance with Section 7.1.
        Unless Glacier and WesterFed agree upon another date, the Effective Date
        will be the later of (i) January 15, 2001, or (ii) the date selected by
        Glacier 30 days after the following:

        (a)    all conditions precedent set forth in Section 5 having been
               either fulfilled or waived; and

        (b)    all approvals required by Section 5.1 having been granted, and
               the expiration of all applicable waiting periods.

2.2     EVENTS OF CLOSING. On the Effective Date, all properly executed
        documents required by this Agreement will be delivered by the parties in
        form consistent with this Agreement. If any party fails to deliver a
        required document on the Effective Date or otherwise defaults under this
        Agreement on or before the Effective Date, then the Transaction will not
        occur unless the adversely affected party waives the default.

2.3     PLACE OF CLOSING. Unless Glacier and WesterFed agree otherwise, Closing
        will occur on the Effective Date at Glacier's corporate office, 49
        Commons Loop, Kalispell, Montana.


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                                    SECTION 3
                                 REPRESENTATIONS

3.1     REPRESENTATIONS OF GLACIER AND WESTERFED. Subject to Section 3.2 and
        except as expressly set forth in Schedule 3.1- G (in the case of
        Glacier), Schedule 3.1-W (in the case of WesterFed), or the other
        Schedules described in this Section 3.1, Glacier represents to
        WesterFed, and WesterFed represents to Glacier, the following:

        3.1.1  CORPORATE ORGANIZATION AND QUALIFICATION.

               (a)    It is a corporation duly organized and validly existing
                      under the state laws of Delaware, its activities do not
                      require it to be qualified in any jurisdiction other than
                      Montana (for WesterFed) and Montana and Idaho (for
                      Glacier), and it is duly qualified and in good standing in
                      such jurisdiction(s).

               (b)    It has the requisite corporate power and authority to own
                      and lease its properties and assets and to carry on its
                      business as it is now being conducted.

               (c)    It has made available to the other party to this Agreement
                      a complete and correct copy of its certificate of
                      incorporation and bylaws, each as amended to date and
                      currently in full force and effect.

        3.1.2  SUBSIDIARIES.

               (a)    Schedules 3.1.2(a)-G and 3.1.2(a)-W list all of the
                      Subsidiaries of Glacier and WesterFed, respectively, and
                      each party's respective percentage ownership of these
                      Subsidiaries, as of the date of this Agreement. In this
                      Agreement, the term "Subsidiary" with respect to a party
                      means any corporation, partnership, financial institution,
                      trust company, or other entity owned or controlled by that
                      party or any of its subsidiaries or affiliates (or owned
                      or controlled by that party together with one or more of
                      its subsidiaries or affiliates). A Subsidiary is
                      considered to be owned or controlled by a party if that
                      party or any of its Subsidiaries (individually or together
                      with the party) directly or indirectly owns, controls, or
                      has the ability to exercise 50% or more of the voting
                      power of the Subsidiary.

               (b)    Each of its Subsidiaries is either a federally chartered
                      stock savings bank, a bank, or a corporation or limited
                      partnership duly organized and validly existing under
                      Montana, Idaho or Delaware law, as the case may be, and is
                      qualified to do business and in good standing in each
                      jurisdiction where the property owned, leased, or
                      operated, or the business conducted by the Subsidiary,
                      requires qualification.

               (c)    With respect to WesterFed only, (i) the Bank is a member
                      in good standing of the Federal Home Loan Bank System;
                      (ii) all eligible deposit accounts issued by the Bank are
                      insured by the Federal Deposit Insurance


                                      A-13
<PAGE>   112

                      Corporation ("FDIC") to the full extent permitted under
                      applicable law; (iii) the Bank is a "qualified thrift
                      lender" as defined in Section 10(m) of HOLA; and (iv) the
                      liquidation account established by the Bank in connection
                      with its conversion from mutual to stock form has been
                      maintained since its establishment in accordance with
                      applicable laws and the records with respect to said
                      account (including subaccounts) are complete and accurate
                      in all material respects.

               (d)    Each of its Subsidiaries has the requisite corporate power
                      and authority to own and lease its properties and assets
                      and to carry on its business as it is now being conducted.

        3.1.3  CAPITAL STOCK.

               (a)    Glacier. Glacier represents:

                      (1)    on the date of this Agreement, Glacier's authorized
                             capital stock consists of 51 million shares divided
                             into two classes: (i) 50 million shares of common
                             stock, par value $.01 per share ("Glacier Common
                             Stock"), 11,441,234 shares of which are issued and
                             outstanding and (ii) 1 million shares of
                             blank-check preferred stock, par value $.01 per
                             share, none of which is outstanding ("Glacier
                             Preferred Stock");

                      (2)    options or rights to acquire not more than an
                             aggregate of 912,715 Glacier Common Stock shares
                             (subject to adjustment on the terms set forth in
                             the Glacier Stock Plans) are outstanding under the
                             stock option plans listed in Schedule 3.1.3(a)(2)-G
                             ("Glacier Stock Plans");

                      (3)    no Glacier Common Stock shares are reserved for
                             issuance, other than the shares reserved for
                             issuance under the Glacier Stock Plans or pursuant
                             to this Agreement, and Glacier has no shares of
                             Glacier Preferred Stock reserved for issuance;

                      (4)    all outstanding shares of Glacier Common Stock have
                             been, and all of the Glacier Common Stock to be
                             issued in the Merger and upon the exercise of
                             Assumed Options will be, duly authorized and
                             validly issued, and are or will be, as the case may
                             be, fully paid and nonassessable;

                      (5)    all outstanding shares of capital stock of each of
                             Glacier's Subsidiaries owned by Glacier or a
                             Subsidiary of Glacier have been duly authorized and
                             validly issued and are fully paid and
                             nonassessable, except to the extent any assessment
                             is required under state or federal law, and are
                             owned by Glacier or a Subsidiary of Glacier free
                             and clear of all liens, pledges, security
                             interests, claims, proxies, preemptive or
                             subscription rights or

                                      A-14
<PAGE>   113


                             other encumbrances or restrictions of any kind
                             (collectively, "Liens");

                      (6)    except as set forth in this Agreement or in the
                             Glacier Stock Plans, there are no preemptive rights
                             or any outstanding subscriptions, options,
                             warrants, rights, convertible securities, or other
                             agreements or commitments of Glacier or any of its
                             Subsidiaries of any character relating to the
                             issued or unissued capital stock or other equity
                             securities of Glacier (including those relating to
                             the issuance, sale, purchase, redemption,
                             conversion, exchange, registration, voting or
                             transfer of such stock or securities); and

                      (7)    Glacier has taken all corporate action necessary to
                             reserve for issuance a sufficient number of shares
                             of Glacier Common Stock to satisfy the maximum
                             Stock Distribution under Subsection 1.6.4 and the
                             maximum number of shares deliverable upon the
                             exercise of Assumed Options.

               (b)    WesterFed. WesterFed represents:

                      (1)    as of the date of this Agreement, WesterFed's
                             authorized capital stock consists of (i) 10 million
                             shares of common stock, $0.01 par value ("WesterFed
                             Common Stock"), 4,069,524 shares of which are
                             issued and outstanding, and (ii) 5 million shares
                             of preferred stock, par value $0.01 per share, none
                             of which is outstanding ("WesterFed Preferred
                             Stock");

                      (2)    options or rights to acquire not more than an
                             aggregate of 580,397 WesterFed Common Stock shares
                             (subject to adjustment on the terms set forth in
                             the WesterFed Stock Plans) are outstanding under
                             the stock option plans listed in Schedule
                             3.1.3(b)(2)-W ("WesterFed Stock Plans");

                      (3)    no WesterFed Common Stock shares are reserved for
                             issuance, other than the shares reserved for
                             issuance under the WesterFed Stock Plans and the
                             Stock Option Agreement;

                      (4)    all outstanding WesterFed Common Stock shares have
                             been duly authorized and validly issued and are
                             fully paid and nonassessable;

                      (5)    all outstanding shares of capital stock (or
                             partnership interests) of each of WesterFed's
                             Subsidiaries have been duly authorized and validly
                             issued and in the case of capital stock are fully
                             paid and nonassessable except to the extent any
                             assessment is required under state or federal law,
                             and, except for partnership interests in COAD
                             Limited Partnerships 2 and 3 that are owned by
                             others, at Closing will be owned by WesterFed or a
                             Subsidiary of WesterFed free and clear of all
                             Liens;


                                      A-15
<PAGE>   114

                      (6)    except as set forth in this Agreement, in the
                             WesterFed Stock Plans, or in the Stock Option
                             Agreement, there are no preemptive rights or any
                             outstanding subscriptions, options, warrants,
                             rights, convertible securities, or other agreements
                             or commitments of WesterFed or any of its
                             Subsidiaries of any character relating to the
                             issued or unissued capital stock or other equity
                             securities of WesterFed or any of its Subsidiaries
                             (including those relating to the issuance, sale,
                             purchase, redemption, conversion, exchange,
                             registration, voting or transfer of such stock or
                             securities);

                      (7)    WesterFed has taken all corporate action necessary
                             to reserve for issuance a sufficient number of
                             shares of WesterFed Common Stock to satisfy the
                             full exercise of the option granted to Glacier
                             under the Stock Option Agreement.

                      (8)    except for the partnership interests owned by
                             others in COAD Limited Partnerships 2 and 3, it
                             (alone or together with any of its Subsidiaries)
                             owns all of the shares of capital stock (or 100% of
                             any other applicable form of ownership interest if
                             the Subsidiary is not a corporation) of each of its
                             Subsidiaries free and clear of all Liens.

        3.1.4  CORPORATE AUTHORITY.

               (a)    It has the requisite corporate power and authority and has
                      taken all corporate action necessary in order to execute
                      and deliver this Agreement and the Stock Option Agreement,
                      subject in the case of this Agreement only to the adoption
                      of this Agreement by its shareholders to the extent
                      required by the Corporation Law and the rules of the
                      exchange on which its stock is traded to complete the
                      Transaction.

               (b)    Each of this Agreement and the Stock Option Agreement is a
                      valid and legally binding agreement of it, enforceable in
                      accordance with the terms of this Agreement (except as may
                      be limited by applicable bankruptcy, insolvency,
                      reorganization, moratorium or other laws affecting
                      creditors' rights generally or by general equity
                      principles).

        3.1.5  REPORTS AND FINANCIAL STATEMENTS.

               (a)    Filing of Reports. Since January 1, 1997, it and each of
                      its Subsidiaries has filed all reports and statements,
                      together with any required amendments to these reports and
                      statements, that it was required to file with (1) the
                      Securities and Exchange Commission ("SEC"), (2) the
                      National Association of Securities Dealers ("NASD"), (3)
                      Board of Governors of the Federal Reserve System (the
                      "Federal Reserve Board"), (4) the Office of Thrift
                      Supervision ("OTS"), (5) the FDIC, and (6) any other
                      applicable federal or state banking, insurance,
                      securities, or other


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                      regulatory authorities. Each of these reports and
                      statements, including the related financial statements and
                      exhibits, complied (or will comply, in the case of reports
                      or statements filed after the date of this Agreement) as
                      to form in all material respects with all applicable
                      statutes, rules and regulations as of their respective
                      dates (and, in the case of reports or statements filed
                      before the date of this Agreement, without giving effect
                      to any amendments or modifications filed after the date of
                      this Agreement).

               (b)    Delivery to Other Party of Reports. It has delivered to
                      the other party a copy of each registration statement,
                      offering circular, report, definitive proxy statement or
                      information statement under the Securities Act of 1933, as
                      amended, ("Securities Act"), the Securities Exchange Act
                      of 1934, as amended, ("Exchange Act"), and state
                      securities and "Blue Sky" laws (collectively, the
                      "Securities Laws") filed, used or circulated by it with
                      respect to periods since January 1, 1997, through the date
                      of this Agreement. It will promptly deliver to the other
                      party each such registration statement, offering circular,
                      report, definitive proxy statement or information
                      statement filed, used or circulated after the date of this
                      Agreement and before the Effective Date (collectively, its
                      "Reports"), each in the form (including related exhibits
                      and amendments) filed with the SEC (or if not so filed, in
                      the form used or circulated).

               (c)    Compliance with Securities Laws. As of their respective
                      dates (and without giving effect to any amendments or
                      modifications filed after the date of this Agreement),
                      each of the Reports, including the related financial
                      statements, exhibits and schedules, filed, used or
                      circulated before the date of this Agreement complied (and
                      each of the Reports filed after the date of this
                      Agreement, will comply) in all material respects with
                      applicable Securities Laws, and did not (or in the case of
                      reports, statements, or circulars filed after the date of
                      this Agreement, will not) contain any untrue statement of
                      a material fact or omit to state a material fact required
                      to be stated therein or necessary to make the statements
                      made therein, in light of the circumstances under which
                      they were made, not misleading.

               (d)    Financial Statements. Each of its balance sheets included
                      in the Financial Statements fairly presents (or, in the
                      case of Financial Statements for periods ending on a date
                      following the date of this Agreement, will fairly present)
                      the consolidated financial position of it and its
                      Subsidiaries as of the date of the balance sheet. Each of
                      the consolidated statements of income, cash flows and
                      shareholders' equity included in the Financial Statements
                      fairly presents (or, in the case of Financial Statements
                      for periods ending on a date following the date of this
                      Agreement, will fairly present) the consolidated results
                      of operations, retained earnings and cash flows, as the
                      case may be, of it and its Subsidiaries for the periods
                      set forth in these statements (subject, in the case of
                      unaudited statements, to normal year-end audit adjustments
                      and the absence of footnotes), in each case in


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                      accordance with generally accepted accounting principles,
                      consistently applied ("GAAP"), except as may be noted in
                      these statements.

                      (1)    "Financial Statements" means: (i) in Glacier's
                             case, the Glacier Financial Statements (or for
                             periods ending on a date following the date of this
                             Agreement, the Subsequent Glacier Financial
                             Statements); and (ii) in WesterFed's case, the
                             WesterFed Financial Statements (or for periods
                             ending on a date following the date of this
                             Agreement, the Subsequent WesterFed Financial
                             Statements).

                      (2)    "Glacier Financial Statements" means Glacier's (i)
                             audited consolidated statements of financial
                             condition as of December 31, 1999, 1998 and 1997,
                             and the related audited statements of income, cash
                             flows and changes in shareholders' equity for each
                             of the years ended December 31, 1999 and 1998 and
                             1997; and (ii) unaudited consolidated statements of
                             financial condition as of the end of each fiscal
                             quarter following December 31, 1999 but preceding
                             the date of this Agreement, and the related
                             unaudited statements of income, cash flows and
                             statements of comprehensive income for each such
                             quarter.

                      (3)    "Subsequent Glacier Financial Statements" means
                             unaudited balance sheets and related statements of
                             income and comprehensive income for each of the
                             fiscal quarters ending after the date of this
                             Agreement and before Closing.

                      (4)    "WesterFed Financial Statements" means (i) audited
                             statements of financial condition as of December
                             31, 1999 and June 30, 1999, 1998 and 1997, and the
                             related audited statements of income, cash flows
                             and changes in shareholders' equity for each of the
                             periods ended December 31, 1999, June 30, 1999,
                             1998 and 1997; and (ii) unaudited consolidated
                             statements of financial condition as of the end of
                             each fiscal quarter following December 31, 1999 but
                             preceding the date of this Agreement, and the
                             related unaudited statements of income, cash flows
                             and changes in shareholders' equity for each such
                             quarter.

                      (5)    "Subsequent WesterFed Financial Statements" means
                             (i) unaudited balance sheets and related statements
                             of income and shareholders' equity for each of
                             WesterFed's fiscal quarters ending after the date
                             of this Agreement and before Closing.

        3.1.6  ABSENCE OF CERTAIN EVENTS AND CHANGES. Except as disclosed in its
               Financial Statements and Reports, since December 31, 1999: (1) it
               and its Subsidiaries have conducted their respective businesses
               only in the ordinary and usual course of the businesses and (2)
               no change or development or combination of changes or
               developments has occurred that, individually or in the aggregate,
               is reasonably


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               likely to result in a Material Adverse Effect with respect to it
               and its Subsidiaries, taken as a whole.

        3.1.7  MATERIAL AGREEMENTS.

               (a)    Except for the Glacier and WesterFed Stock Plans,
                      respectively, this Agreement, the Stock Option Agreement,
                      any other agreement executed by the parties, and
                      arrangements made after the date of this Agreement in
                      accordance with the terms of this Agreement, it and its
                      Subsidiaries are not bound by any material contract (as
                      defined in Item 601(b)(10) of Regulation S-K under the
                      Securities Act) that: (1) is to be performed after the
                      date of this Agreement and (2) has not been filed with or
                      incorporated by reference in its Reports or set forth in
                      Schedule 3.1.7(a)-G (in the case of Glacier) or Schedule
                      3.1.7(a)-W (in the case of WesterFed).

               (b)    Neither it nor any of its Subsidiaries is in default under
                      any material contract, agreement, commitment, arrangement,
                      lease, insurance policy, or other instrument.

        3.1.8  KNOWLEDGE AS TO CONDITIONS. Its President, Chief Executive
               Officer, and Chief Financial Officer (collectively, "Executive
               Officers") know of no reason the Regulatory Approvals and, to the
               extent necessary, any other approvals, authorizations, filings,
               registrations, and notices should not be obtained without the
               imposition of any condition or restriction that is reasonably
               likely to have a Material Adverse Effect with respect to it, its
               Subsidiaries, or the Combined Corporation, or the opinions of the
               tax experts referred to in Subsections 5.2.6 and 5.3.6.

        3.1.9  BROKERS AND FINDERS. Neither it, its Subsidiaries, nor any of
               their respective officers, directors or employees has employed
               any broker or finder or incurred any liability for any brokerage
               fees, commissions or finder's fees in connection with the
               transactions contemplated in this Agreement, except Putnam Lovell
               (in the case of WesterFed) and Davidson (in the case of Glacier).

        3.1.10 CORPORATE RECORDS. Its corporate record books, transfer books and
               stock ledgers (and each of those of its Subsidiaries) are
               complete and accurate in all material respects and reflect all
               meetings, consents and other material actions of its organizers,
               incorporators, shareholders, Boards of Directors and committees
               of the Boards of Directors (and those of its Subsidiaries) and
               all transactions in their respective capital stocks, since their
               respective inceptions.

        3.1.11 LOAN AND LEASE LOSSES. Its Executive Officers know of no reason
               why the allowance for loan and lease losses shown in the balance
               sheets included in the Financial Statements for the periods ended
               December 31, 1999, March 31, 2000, and June 30, 2000, was not
               adequate as of those dates, respectively, to provide for
               estimable and probable losses, net of recoveries relating to
               loans not previously charged off, inherent in its loan portfolio.


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        3.1.12 NO STOCK OPTION PLANS. Neither it nor any of its Subsidiaries has
               adopted any stock option plans or granted any options or rights
               to acquire any shares of its common stock or capital stock or
               other ownership interest of any Subsidiary except as expressly
               set forth in Schedule 3.1.3(a)(2)-G (in the case of Glacier) or
               Schedule 3.1.3(b)(2)-W (in the case of WesterFed).

        3.1.13 GOVERNMENTAL FILINGS; NO VIOLATIONS.

               (a)    Filings. Other than the approval of the Federal Reserve
                      Board (the "Regulatory Approval"), the filing of a
                      certificate of merger with the Secretary of State of
                      Delaware, and other requirements under the Securities Act,
                      the Exchange Act, and state securities and "Blue Sky"
                      laws, no notices, reports or other filings are required to
                      be made by it with, nor are any consents, registrations,
                      approvals, permits or authorizations required to be
                      obtained by it from, any governmental or regulatory
                      authority, agency, court, commission or other entity,
                      domestic or foreign ("Governmental Entity"), in connection
                      with the execution, delivery or performance of this
                      Agreement by it and the consummation by it of the
                      Transaction.

               (b)    Violations. The execution, delivery and performance of
                      this Agreement does not and will not, and the consummation
                      by it of the Transaction will not, constitute or result
                      in: (1) a breach or violation of, or a default under, its
                      certificate of incorporation or bylaws, or the comparable
                      governing instruments of any of its Subsidiaries; (2) a
                      breach or violation of, or a default under, or the
                      acceleration of or the creation of a Lien (with or without
                      the giving of notice, the lapse of time or both) under,
                      any provision of any material agreement, lease, contract,
                      note, mortgage, indenture, arrangement or other obligation
                      ("Contracts") of it or any of its Subsidiaries; or (3) a
                      violation of any law, rule, ordinance or regulation or
                      judgment, decree, order, award, or governmental or
                      non-governmental permit or license to which it or any of
                      its Subsidiaries is subject; or (4) any change in the
                      rights or obligations of any party under any of the
                      Contracts. A list of all consents it or its Subsidiaries
                      must obtain from third parties under any Contracts before
                      consummation of the Transaction is contained in Schedule
                      3.1.13(b)-G (in the case of Glacier), or Schedule
                      3.1.13(b)-W (in the case of WesterFed).

        3.1.14 ASSET CLASSIFICATION.

               (a)    An accurate and complete list as of August 31, 2000,
                      except as otherwise expressly noted in the appropriate
                      Schedule, and separated by category of classification or
                      criticism ("Asset Classification"), of the aggregate
                      amounts of loans, extensions of credit and other assets of
                      it and its Subsidiaries that have been criticized or
                      classified by any Governmental Entity, by any outside
                      auditor, or by any internal audit, is set forth in


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                      Schedule 3.1.14(a)-G (in the case of Glacier) or Schedule
                      3.1.14(a)-W (in the case of WesterFed).

               (b)    Except as shown on such Schedules, no amounts of loans,
                      extensions of credit or other assets that have been
                      classified or criticized as of August 31, 2000 by any
                      representative of any Governmental Entity as "Other Assets
                      Especially Mentioned," "Substandard," "Doubtful," "Loss"
                      or words of similar effect are excluded from the amounts
                      disclosed in the Asset Classification, other than amounts
                      of loans, extensions of credit or other assets that were
                      paid off or charged off by it or its Subsidiaries before
                      the date of this Agreement.

        3.1.15 INVESTMENTS. All investments (except investments in securities
               issued by federal state or local government or any subdivision or
               agency thereof and investments in Subsidiaries) made by it or any
               of its Subsidiaries which represent an ownership interest of more
               than 5% in any corporation, company, partnership, or other entity
               are listed on Schedule 3.1.15-G (in the case of Glacier) or
               Schedule 3.1.15-W (in the case of WesterFed). All investments
               comply in all material respects with all applicable laws and
               regulations.

        3.1.16 PROPERTIES.

               (a)    A complete list of all banking offices of Glacier and
                      WesterFed appears in Schedule 3.1.16(a)-G or Schedule
                      3.1.16(a)-W, respectively.

               (b)    Except as disclosed or reserved against in its Financial
                      Statements or in Schedule 3.1.16(b)-G (in the case of
                      Glacier) or Schedule 3.1.16(b)-W in the case of
                      WesterFed), it and its Subsidiaries have good and
                      marketable title, free and clear of all Liens (other than
                      Liens for current taxes not yet delinquent or pledges to
                      secure deposits) to all of the properties and assets,
                      tangible or intangible, reflected in its Reports as being
                      owned by it or its Subsidiaries as of the date of this
                      Agreement.

               (c)    To the knowledge of its Executive Officers, all buildings
                      and all fixtures, equipment and other property and assets
                      that are material to its business on a consolidated basis
                      and are held under leases or subleases by it or its
                      Subsidiaries are held under valid leases or subleases,
                      enforceable in accordance with their respective terms
                      (except as may be limited by applicable bankruptcy,
                      insolvency, reorganization, moratorium or other laws
                      affecting creditors' rights generally or by general equity
                      principles).

               (d)    A list of all its and its Subsidiaries' existing branches
                      and offices and all new branches or offices it or any of
                      its Subsidiaries' has applied to establish or purchase,
                      along with the cost to establish or purchase those
                      branches, appears in Schedule 3.1.16(d)-G (in the case of
                      Glacier) or Schedule 3.1.16(d)-W (in the case of
                      WesterFed).


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        3.1.17 ANTI-TAKEOVER PROVISIONS. Each party has taken all action
               required to be taken by it in order to exempt this Agreement and
               the Stock Option Agreement, and the transactions contemplated
               hereby and thereby from, and this Agreement, the Stock Option
               Agreement and the transactions contemplated hereby and thereby
               are exempt from, the requirements of any "moratorium" "control
               share", "fair price", "affiliate transaction", "business
               combination" or other anti-takeover laws and regulations of any
               state (collectively, "Takeover Laws"), including the State of
               Delaware, or any takeover-related provisions of its certificate
               of incorporation or bylaws.

        3.1.18 COMPLIANCE WITH LAWS. Except as disclosed in Schedule 3.1.18-G
               (with respect to Glacier) or Schedule 3.1.18-W (with respect to
               WesterFed), it and each of its Subsidiaries:

               (a)    are in compliance, in the conduct of their businesses, in
                      all material respects with all applicable federal, state,
                      local, and foreign statutes, laws, regulations,
                      ordinances, rules, judgments, orders or decrees, including
                      the Bank Secrecy Act, the Truth in Lending Act, the Equal
                      Credit Opportunity Act, the Fair Housing Act, the
                      Community Reinvestment Act, the Home Mortgage Disclosure
                      Act and all applicable fair lending laws or other laws
                      relating to discrimination;

               (b)    have all permits, licenses, certificates of authority,
                      orders, and approvals of, and have made all filings,
                      applications, and registrations with, federal, state,
                      local, and foreign governmental or regulatory bodies
                      (including the Federal Reserve, FDIC and OTS) that are
                      required in order to permit them to carry on their
                      businesses as they are presently conducted;

               (c)    have received since January 1, 1997, no notification or
                      communication from any Governmental Entity (including any
                      bank, insurance and securities regulatory authorities) or
                      its staff (1) asserting a failure to comply with any of
                      the statutes, regulations or ordinances that such
                      Governmental Entity enforces, (2) threatening to revoke
                      any license, franchise, permit or governmental
                      authorization, or (3) threatening or contemplating
                      revocation or limitation of, or that would have the effect
                      of revoking or limiting, FDIC deposit insurance (nor, to
                      the knowledge of its Executive Officers, do any grounds
                      for any of the foregoing exist); and

               (d)    are not required to notify any federal banking agency
                      before adding directors to its board of directors or
                      employing senior executives.

        3.1.19 LITIGATION. Except as disclosed in its Financial Statements or in
               Schedule 3.1.19-G (in the case of Glacier) or Schedule 3.1.19-W
               (in the case of WesterFed), before the date of this Agreement:

               (a)    no criminal or administrative investigations or hearings,
                      before or by any Governmental Entity, or civil, criminal
                      or administrative actions, suits,

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<PAGE>   121

                      claims or proceedings, before or by any person (including
                      any Governmental Entity) are pending or, to the knowledge
                      of its Executive Officers, threatened, against it or any
                      of its Subsidiaries (including under the Truth in Lending
                      Act, the Equal Credit Opportunity Act, the Fair Housing
                      Act, the Community Reinvestment Act, the Home Mortgage
                      Disclosure Act, or any other fair lending law or other law
                      relating to discrimination); and

               (b)    neither it nor any of its Subsidiaries (nor any officer,
                      director, controlling person or property of it or any of
                      its Subsidiaries) is a party to or is subject to any
                      order, decree, agreement, memorandum of understanding or
                      similar arrangement with, or a commitment letter or
                      similar submission to, any Governmental Entity charged
                      with the supervision or regulation of depository
                      institutions or engaged in the insurance of deposits
                      (including the FDIC) or the supervision or regulation of
                      it or of its Subsidiaries, and neither it nor any of its
                      Subsidiaries has been advised by any such Governmental
                      Entity that such Governmental Entity is contemplating
                      issuing or requesting (or is considering the
                      appropriateness of issuing or requesting) any such order,
                      decree, agreement, memorandum of understanding, commitment
                      letter or similar submission.

        3.1.20 TAXES.

               (a)    For purposes of this Subsection, "Tax" includes any tax or
                      similar governmental charge, impost, or levy (including
                      income taxes, franchise taxes, transfer taxes or fees,
                      stamp taxes, sales taxes, use taxes, excise taxes, ad
                      valorem taxes, withholding taxes, worker's compensation,
                      payroll taxes, unemployment insurance, social security,
                      minimum taxes, or windfall profits taxes), together with
                      any related liabilities, penalties, fines, additions to
                      tax, or interest, imposed by the United States or any
                      state, county, provincial, local or foreign government or
                      subdivision or agency of the United States.

               (b)    All Tax returns, including all information returns, it and
                      its Subsidiaries are required to file have been timely
                      filed or requests for extensions have been timely filed.
                      If any extensions were filed, they have been or will be
                      granted by Closing and will not have expired prior to
                      Closing. All filed returns are complete and accurate in
                      all material respects.

               (c)    Except as disclosed in its most recent Financial
                      Statements:

                      (1)    all Taxes attributable to it or any of its
                             Subsidiaries that were due or payable (without
                             regard to whether such taxes have been assessed) as
                             of the date of its most recent Financial Statements
                             have been paid in full or have been adequately
                             provided for in such Financial Statements in
                             accordance with GAAP;

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<PAGE>   122


                      (2)    adequate provision in accordance with GAAP has been
                             made in its most recent Financial Statements
                             relating to all Taxes for the periods covered by
                             such Financial Statements that were not yet due and
                             payable as of the date thereof, regardless of
                             whether the liability for such Taxes is disputed;

                      (3)    as of the date of this Agreement and except as
                             disclosed in its Financial Statements, there is no
                             outstanding audit examination, deficiency, refund,
                             litigation or outstanding waiver or agreement
                             extending the applicable statute of limitations for
                             the assessment or collection of any Taxes for any
                             period with respect to any Taxes of it or its
                             Subsidiaries;

                      (4)    all Taxes with respect to completed and settled
                             examinations or concluded litigation relating to it
                             or any of its Subsidiaries have been paid in full
                             or have been adequately provided for in its most
                             recent Financial Statements (in accordance with
                             GAAP);

                      (5)    neither it nor any of its Subsidiaries is a party
                             to a Tax sharing or similar agreement or any
                             agreement under which it or any of its Subsidiaries
                             has indemnified any party (other than it or one of
                             its Subsidiaries) with respect to Taxes; and

                      (6)    proper and accurate amounts have been (or will be)
                             withheld from all employees (and timely paid to the
                             appropriate Governmental Entity or set aside in an
                             account for these purposes) for all periods prior
                             to the Effective Date in compliance with all Tax
                             withholding provisions of applicable federal,
                             state, local and foreign laws (including income,
                             social security and employment tax withholding for
                             all types of compensation).

        3.1.21 INSURANCE. It and each of its Subsidiaries maintain insurance
               with insurers which in its best judgment are sound and reputable,
               on their respective assets, and upon their respective businesses
               and operations, against loss or damage, risks, hazards and
               liabilities as in their judgment they deem appropriate. It and
               its Subsidiaries maintain in effect all insurance required to be
               carried by law or by any agreement by which they are bound, and
               also maintain directors' and officers' liability policies with
               coverage levels consistent with their best judgment. All material
               claims and notices under all policies of insurance maintained by
               it and its Subsidiaries have been filed in due and timely
               fashion. All directors' and officers' liability insurance
               policies and other insurance policies maintained by it or its
               Subsidiaries are listed in Schedule 3.1.21-G (in the case of
               Glacier) or in Schedule 3.1.21-W (in the case of WesterFed).

        3.1.22 LABOR MATTERS. Neither it nor any of its Subsidiaries is a party
               to, or is bound by, any collective bargaining agreement, contract
               or other agreement or understanding with any labor union or labor
               organization. Neither it nor any of its


                                      A-24
<PAGE>   123

               Subsidiaries is the subject of any proceeding: (1) asserting that
               it or any of its Subsidiaries has committed an unfair labor
               practice or (2) seeking to compel it or any of its Subsidiaries
               to bargain with any labor organization as to wages or conditions
               of employment. No strike involving it or any of its Subsidiaries
               is pending or, to the knowledge of its Executive Officers,
               threatened. Its Executive Officers are not aware of any activity
               involving its or any of its Subsidiaries' employees seeking to
               certify a collective bargaining unit or engaging in any other
               organizational activity.

        3.1.23 EMPLOYEE BENEFITS.

               (a)    For purposes of this Agreement, "Plan" or "Plans",
                      individually or collectively, means any "employee benefit
                      plan," as defined in Section 3(3) of the Employee
                      Retirement Income Security Act of 1974, ("ERISA"), as
                      amended, maintained by it or any of its Subsidiaries, as
                      the case may be. No Plan is a multi employer plan within
                      the meaning of Section 3(37) of ERISA, other than the
                      Financial Institutions Retirement Fund Plan (the "FIRF
                      Plan") sponsored by WesterFed and its Subsidiaries.

               (b)    A list, as of the date of this Agreement, of (1) all
                      Plans, stock purchase plans, restricted stock and stock
                      option plans, and other deferred compensation
                      arrangements, (2) all other material employee benefit
                      plans that cover employees or former employees of it and
                      its Subsidiaries (its "Compensation Plans") is set forth
                      in Schedule 3.1.23(b)-G (in the case of Glacier) or
                      Schedule 3.1.23(b)-W (in the case of WesterFed). True and
                      complete copies of the Compensation Plans (and, as
                      applicable, copies of summary plan descriptions, annual
                      reports on Form 5500, actuarial reports and reports under
                      Financial Accounting Standards Board Statement No. 106
                      relating to such Compensation Plans) covering current or
                      former employees or directors of it or its Subsidiaries
                      (its "Employees"), including Plans and related amendments,
                      have been made available to the other party.

               (c)    Each of its Plans that is intended to be a pension, profit
                      sharing, stock bonus, thrift, savings or employee stock
                      ownership plan that is qualified under IRC Section 401(a)
                      ("Qualified Plans") has been determined by the Internal
                      Revenue Service to qualify under IRC Section 401(a), or an
                      application for determination of such qualification has
                      been timely made to the Internal Revenue Service prior to
                      the end of the applicable remedial amendment period under
                      IRC Section 401(b), and, to the knowledge of its Executive
                      Officers, there exist no circumstances likely to
                      materially adversely affect the qualified status of any
                      such Qualified Plan. All such Qualified Plans established
                      or maintained by it or any of its Subsidiaries or to which
                      it or any of its Subsidiaries contribute are in compliance
                      in all material respects with all applicable requirements
                      of ERISA, and are in compliance in all material respects
                      with all applicable IRC requirements (including
                      qualification and non-discrimination requirements in
                      effect as


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                      of the Effective Time) for obtaining the Tax benefits the
                      IRC thereupon permits with respect to such Qualified
                      Plans. All accrued contributions and other payments
                      required to be made by it or any of its Subsidiaries have
                      been made or reserves adequate for such purposes as of
                      such date have been set aside therefor and reflected in
                      its Financial Statements. Neither it nor any of its
                      Subsidiaries is in material default in performing any of
                      its respective contractual obligations under any of Plans
                      or any related trust agreement or insurance contract, and
                      there are no material outstanding liabilities of any such
                      Plan other than liabilities for benefits to be paid to
                      participants in such Plan and their beneficiaries in
                      accordance with the terms of such Plan.

               (d)    Under each Qualified Plan that is a defined benefit plan,
                      as of the last day of the most recent plan year, the
                      actuarially determined present value of all "benefit
                      liabilities", within the meaning of Section 4001(a)(16) of
                      ERISA (as determined on the basis of the actuarial
                      assumptions contained in the Plan's most recent actuarial
                      valuation) did not exceed the then current value of the
                      assets of such Plan, and there has been no material change
                      in the financial condition of such Plan since the last day
                      of the most recent plan year.

               (e)    There is no pending or, to the knowledge of its Executive
                      Officers, threatened litigation or pending claim (other
                      than benefit claims made in the ordinary course) by or on
                      behalf of or against any of the Plans (or with respect to
                      the administration of any of the such Plans) now or
                      heretofore maintained by it or any of its Subsidiaries
                      which allege violations of applicable state or federal law
                      which are reasonably likely to result in a liability on
                      the part of it or any of its Subsidiaries or any such
                      Plan.

               (f)    It and its Subsidiaries and all other persons having
                      fiduciary or other responsibilities or duties with respect
                      to any Plan are and have since the inception of each such
                      Plan been in substantial compliance with, and each such
                      Plan is and has been operated in all material respects in
                      accordance with, its provisions and in substantial
                      compliance with the applicable laws, rules and regulations
                      promulgated by the Department of Labor, the Pension
                      Benefit Guaranty Corporation ("PBGC") and the Internal
                      Revenue Service under ERISA, the IRC or any other
                      applicable law. Notwithstanding the foregoing, no
                      representation is made with respect to compliance by a
                      third party insurance company. No "reportable event" (as
                      defined in Section 4043(b) of ERISA) has occurred with
                      respect to any Qualified Plan. Neither it, any Subsidiary
                      nor any Plan has incurred or is reasonably likely to incur
                      any liability for any "prohibited transactions" (as
                      defined in Section 406 of ERISA or IRC Section 4975(c)),
                      or any material liability under Section 601 of ERISA or
                      IRC Section 4980B.

               (g)    It and its Subsidiaries have filed or caused to be filed,
                      and will continue to file or cause to be filed, in a
                      timely manner all filings pertaining to each


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                      Plan with the Internal Revenue Service, the PBGC, the
                      Department of Labor, and as prescribed by the IRC or
                      ERISA, or regulations issued thereunder. All such filings,
                      as amended, were complete and accurate in all material
                      respects as of the dates of such filings, and there were
                      no misstatements or omissions in any such filing which
                      would be material to its financial condition on a
                      consolidated basis. Notwithstanding the foregoing, no
                      representation is made with respect to filings by a third
                      party insurance company.

               (h)    Except as disclosed in its Financial Statements, neither
                      it nor its Subsidiaries have any obligations for retiree
                      health and life benefits.

               (i)    No restrictions exist on the rights of it or its
                      Subsidiaries to amend or terminate any Plan without
                      incurring liability under the Plan in addition to normal
                      liabilities for benefits, except no amendment will be
                      permitted to alter the vested rights and benefits of
                      participants and termination will result in all
                      participant benefits becoming fully vested.

               (j)    Except as disclosed in its Financial Statements or as
                      provided in a Schedule to this Agreement, the transactions
                      contemplated by this Agreement and the Stock Option
                      Agreement will not result in: (1) vesting, acceleration,
                      or increase of any amounts payable under any Compensation
                      Plan, (2) any material increase in benefits under any
                      Compensation Plan or (3) payment of any severance or
                      similar compensation under any Compensation Plan.

        3.1.24 ENVIRONMENTAL MATTERS.

               (a)    For purposes of this Subsection 3.1.24, the following
                      definitions apply:

                      (1)    "Subject Property" with respect to a party means
                             (i) all real property at which the businesses of it
                             or its Subsidiaries have been conducted, and any
                             property where under any Environmental Law it or
                             any of its Subsidiaries is deemed to be the owner
                             or operator of the property; (ii) any facility in
                             which it or its Subsidiaries participates in the
                             management, including participating in the
                             management of the owner or operator of the
                             property; and (iii) all other real property that,
                             for purposes of any Environmental Law, it or any of
                             its Subsidiaries otherwise could be deemed to be an
                             owner or operator of or as otherwise having control
                             over.

                      (2)    "Environmental Laws" means any federal, state,
                             local or foreign law, regulation, agency policy,
                             order, decree, judgment, judicial opinion, or any
                             agreement with any Governmental Entity, presently
                             in effect or subsequently adopted relating to: (i)
                             the manufacture, generation, transport, use,
                             treatment, storage, recycling, disposal, release,
                             threatened release or presence of


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                             Hazardous Substances, or (ii) the preservation,
                             restoration or protection of the environment,
                             natural resources or human health.

                      (3)    "Hazardous Substances" means any hazardous or toxic
                             substance, material or waste that is regulated by
                             any local governmental authority, any state
                             government or the United States Government,
                             including any material or substance that is (a)
                             defined as a "hazardous substance" in 42 USC
                             Section 9601(14), (b) defined as a "pollutant or
                             contaminant" in 42 USC Section 9604(a)(2), or (c)
                             defined as a "hazardous waste" in 42 USC Section
                             6903(5).

               (b)    It and each of its Subsidiaries and the Subject Property
                      are, and have been, in compliance with all applicable
                      Environmental Laws, and no circumstances exist that with
                      the passage of time or the giving of notice would be
                      reasonably likely to result in noncompliance with such
                      Environmental Laws.

               (c)    None of the following, and no reasonable basis for any of
                      the following, exists: pending or threatened claims,
                      actions, investigations, notices of non-compliance,
                      information requests or notices of potential
                      responsibility or proceedings involving it or any of its
                      Subsidiaries or any Subject Property, relating to:

                      (1)    an asserted liability of it or any of its
                             Subsidiaries or any prior owner, occupier or user
                             of Subject Property under any applicable
                             Environmental Law or the terms and conditions of
                             any permit, license, authority, settlement,
                             agreement, decree or other obligation arising under
                             any applicable Environmental Law;

                      (2)    the handling, storage, use, transportation, removal
                             or disposal of Hazardous Substances;

                      (3)    the actual or threatened discharge, release or
                             emission of Hazardous Substances from, on or under
                             or within Subject Property into the air, water,
                             surface water, ground water, land surface or
                             subsurface strata; or

                      (4)    personal injuries or damage to property related to
                             or arising out of exposure to Hazardous Substances.

               (d)    No storage tanks underground or otherwise are present on
                      the Subject Property or, if present, none of such tanks
                      are leaking and each of them is in full compliance with
                      all applicable Environmental Laws. With respect to any
                      Subject Property, it and its Subsidiaries do not own,
                      possess or control any PCBs, PCB-contaminated fluids,
                      wastes or equipment, or any asbestos or
                      asbestos-containing material which is dangerous to the
                      health of human beings. No Hazardous Substances have been
                      used, handled, stored, discharged, released or emitted, or
                      are threatened to be discharged,


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                      released or emitted, at or on any Subject Property, except
                      for those types and quantities of Hazardous Substances
                      typically used in an office environment and that have not
                      created conditions requiring remediation by it or any of
                      its Subsidiaries under any applicable Environmental Law.

               (e)    Except for the investigation or monitoring by the
                      Environmental Protection Agency or similar state agencies
                      in the ordinary course, no part of the Subject Property
                      has been or is scheduled for investigation or monitoring
                      under any applicable Environmental Law.

3.2     EXCEPTIONS TO REPRESENTATIONS.

        3.2.1  DISCLOSURE OF EXCEPTIONS. Each exception set forth in a Schedule
               is disclosed only for purposes of the representations referenced
               in that exception; but the following conditions apply:

               (a)    no exception is required to be set forth in a Schedule if
                      its absence would not result in the related representation
                      or warranty being found untrue or incorrect under the
                      standard established by Subsection 3.2.2; and

               (b)    the mere inclusion of an exception in a Schedule is not an
                      admission by a party that such exception represents a
                      material fact, material set of facts, or material event or
                      would result in a Material Adverse Effect with respect to
                      that party.

        3.2.2  NATURE OF EXCEPTIONS. No representation contained in Section 3.1
               will be found untrue or incorrect and no party to this Agreement
               will have breached a representation or warranty due to the
               following: the existence of any fact, set of facts, or event, if
               the fact or event individually or taken together with other facts
               or events would not, or, in the case of Subsection 3.1.19, is not
               reasonably likely to, have a Material Adverse Effect with respect
               to such party.

        3.2.3  MATERIAL ADVERSE EFFECT. For purposes of this Agreement,
               "Material Adverse Effect" with respect to a party means an effect
               that: (1) is materially adverse to the business, financial
               condition, results of operations or prospects of a party and its
               Subsidiaries taken as a whole; (2) significantly and adversely
               affects the ability of a party to consummate the transactions
               contemplated by this Agreement by the Termination Date or to
               perform its material obligations under this Agreement; or (3)
               enables any persons to prevent the consummation by the
               Termination Date of the transactions contemplated by this
               Agreement. No Material Adverse Effect will be deemed to have
               occurred on the basis of any effect resulting from actions or
               omissions of a party taken with the explicit prior consent of the
               other party to this Agreement.


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                                    SECTION 4
                            CONDUCT AND TRANSACTIONS
                                 BEFORE CLOSING

4.1     CONDUCT OF WESTERFED'S BUSINESS BEFORE CLOSING. Before Closing,
        WesterFed promises as follows:

        4.1.1  AVAILABILITY OF WESTERFED'S BOOKS, RECORDS AND PROPERTIES.

               (a)    WesterFed will make its, and cause its Subsidiaries to
                      make their, books, records, properties, contracts and
                      documents available at all reasonable times to Glacier and
                      its counsel, accountants and other representatives. These
                      items will be open for inspection, audit and direct
                      verification of: (1) loan or deposit balances, (2)
                      collateral receipts and (3) any other transactions or
                      documentation Glacier may find reasonably relevant to the
                      Transaction. WesterFed will, and will cause its
                      Subsidiaries to, cooperate fully in any such inspection,
                      audit, or direct verification procedures, and WesterFed
                      will, and will cause its Subsidiaries to, make available
                      all information reasonably required by or on behalf of
                      Glacier.

               (b)    At Glacier's request, WesterFed will request any third
                      parties involved in the preparation or review of (1)
                      WesterFed Financial Statements, (2) Subsequent WesterFed
                      Financial Statements, or (3) any audits of WesterFed's
                      operations, loan portfolios or other assets, to disclose
                      to Glacier the work papers or any similar materials
                      related to these items (to the extent permitted by
                      WesterFed's outside auditors).

        4.1.2  ORDINARY AND USUAL COURSE. WesterFed will, and will cause its
               Subsidiaries to, conduct business only in the ordinary and usual
               course and, without the prior written consent of Glacier (which
               consent shall not be unreasonably withheld or delayed with
               respect to subsections (g), (h) and (j) below), will not, and
               will not allow its Subsidiaries to, do any of the following:

               (a)    effect any stock split or other recapitalization with
                      respect to WesterFed Common Stock or the capital stock of
                      a WesterFed Subsidiary, or issue, pledge, redeem, or
                      encumber in any way any shares of WesterFed's or a
                      WesterFed Subsidiary's capital stock, except shares issued
                      pursuant to the exercise of WesterFed Options; or grant
                      any option or other right to shares of WesterFed's or a
                      WesterFed Subsidiary's capital stock other than pursuant
                      to the Stock Option Agreement or as otherwise provided in
                      an agreement entered into by the parties;

               (b)    declare or pay any dividend, or make any other
                      distribution, either directly or indirectly, with respect
                      to WesterFed Common Stock or the capital stock of any
                      WesterFed Subsidiary, other than dividends or
                      distributions from the Bank to WesterFed, and regular
                      quarterly cash dividends on WesterFed Common Stock and a
                      bonus dividend on WesterFed Common


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<PAGE>   129

                      Stock in an aggregate amount not to exceed $325,000 to be
                      declared in December, 2000 provided; however, the
                      declaration and payment of the last dividend (not the
                      bonus dividend) by WesterFed prior to the Effective Date
                      shall be coordinated with Glacier in a manner to preclude
                      any loss or duplication of dividends received by the
                      holders of WesterFed Common Stock;

               (c)    acquire, sell, transfer, assign, encumber or otherwise
                      dispose of assets or make any commitment with respect to
                      its assets other than in the ordinary and usual course of
                      business;

               (d)    solicit or accept deposit accounts of a different type
                      from accounts previously accepted by it or at rates
                      materially in excess of rates previously paid by it,
                      except to reflect changes in prevailing interest rates in
                      the places where it does business, or incur any
                      indebtedness for borrowed funds greater than $10 million
                      (except for borrowings from the Federal Home Loan Bank in
                      the ordinary course of business and consistent with past
                      practices);

               (e)    acquire an ownership interest or a leasehold interest in
                      any real property, whether by foreclosure or otherwise,
                      without: (1) making an appropriate environmental
                      evaluation in advance of obtaining the interest and
                      providing the evaluation to Glacier, except no
                      environmental evaluation will be required with respect to
                      one to four family residential property and (2) providing
                      Glacier with at least 30 days' advance written notice
                      before it acquires the interest;

               (f)    subject to the exercise of its board of directors'
                      fiduciary duties and on the advice of counsel, enter into
                      or recommend the adoption by WesterFed's shareholders of
                      any agreement involving a possible merger or other
                      business combination or asset sale by WesterFed not
                      involving the Transaction;

               (g)    enter into, renew, or terminate any contracts (including
                      real property leases and data or item processing
                      agreements) with or for a term of one-year or more, except
                      for its contracts of deposit and agreements to lend money
                      not otherwise restricted under this Agreement and (1)
                      entered into in the ordinary course of business, (2)
                      consistent with past practices, and (3) providing for not
                      less (in the case of loans) or more (in the case of
                      deposits) than prevailing market rates of interest in the
                      places where it does business;

               (h)    enter into or amend any contract (other than contracts for
                      deposits or agreements to lend money not otherwise
                      restricted by this Agreement) calling for a payment by it
                      of more than $100,000, unless the contract may be
                      terminated without cause or penalty upon 30 days notice or
                      less;


                                      A-31
<PAGE>   130

               (i)    enter into any personal services contract with any person
                      or firm, except contracts, agreements, or arrangements for
                      legal, accounting, investment advisory, or tax services
                      entered into directly to facilitate the Transaction;

               (j)    (1) sell any securities, whether held for investment or
                      sale, other than in the ordinary course of business or
                      sell any securities, whether held for investment or sale,
                      even in the ordinary course of business, if the aggregate
                      gain realized from all sales after the date of this
                      Agreement would be more than $100,000 or (2) transfer any
                      investment securities between portfolios of securities
                      available for sale and portfolios of securities to be held
                      to maturity;

               (k)    amend its certificate of incorporation, bylaws, or other
                      formation agreements, or convert its charter or form of
                      entity;

               (l)    implement or adopt any material changes in its operations,
                      policies, or procedures, including loan loss reserve
                      policies, unless the changes are requested by Glacier or
                      are necessary or advisable, on the advice of legal
                      counsel, to comply with applicable laws, regulations, or
                      regulatory policies;

               (m)    implement or adopt any change in its accounting
                      principles, practices or methods, other than as may be
                      required (1) by GAAP, (2) for tax purposes, or (3) to take
                      advantage of any beneficial tax or accounting methods;

               (n)    other than in accordance with binding commitments existing
                      on the date of this Agreement, make any capital
                      expenditures for fixed assets in excess of $50,000 per
                      project or related series of projects or $100,000 in the
                      aggregate; or

               (o)    enter into any other transaction or make any expenditure
                      other than in the ordinary and usual course of its
                      business and made or entered into in a manner consistent
                      with its well-established practices or as required by this
                      Agreement, except for the expenses to be incurred by it
                      relating to this Agreement and the Transaction, which
                      expenses to Putnam, Lovell and Silver, Freedman & Taff,
                      shall not exceed the amounts set forth in their engagement
                      letters included as attachments to Schedule 3.1.7(a)-W.

        4.1.3  CONDUCT REGARDING REPRESENTATIONS. WesterFed will not do or cause
               to be done anything that would cause any representation made by
               it in Section 3.1 to be untrue at Closing, except as consented to
               in writing by Glacier.

        4.1.4  MAINTENANCE OF PROPERTIES. WesterFed will, and will cause each of
               its Subsidiaries to, maintain its properties and equipment (and
               related insurance or its equivalent) in accordance with good
               business practice.

        4.1.5  PRESERVATION OF BUSINESS ORGANIZATION. WesterFed will, and will
               cause each of its Subsidiaries to, use all reasonable efforts to:


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               (a)    preserve its business organization;

               (b)    retain the services of present employees; and

               (c)    preserve the goodwill of suppliers, customers and others
                      with whom it has business relationships.

        4.1.6  SENIOR MANAGEMENT. WesterFed will obtain Glacier's approval
               before making any change, including hiring of replacements, with
               respect to present management personnel having the rank of
               vice-president or higher at WesterFed or the Bank.

        4.1.7  COMPENSATION AND EMPLOYMENT AGREEMENTS. WesterFed will not permit
               any increase in the current or deferred compensation payable or
               to become payable by WesterFed or the Bank to any of its
               directors, officers, employees, agents, or consultants other than
               normal increments in compensation in accordance with WesterFed's
               or the Bank's past practices with respect to the timing and
               amounts of such increments, Christmas bonuses and incentive
               bonuses for calendar year 2000. Without the prior written
               approval of Glacier and except as contemplated in this Agreement,
               WesterFed will not (and will not permit the Bank to) commit to,
               execute or deliver any employment agreement with any party not
               terminable upon two weeks' notice and without expense.

        4.1.8  UPDATE OF FINANCIAL STATEMENTS. WesterFed will promptly deliver
               its Financial Statements to Glacier. WesterFed will deliver
               Subsequent WesterFed Financial Statements to Glacier by the
               earlier of: (1) 5 days after WesterFed has prepared and issued
               them or (2) 60 days after year-end for year-end statements and 30
               days after the end of the quarter for quarterly statements. The
               Subsequent WesterFed Financial Statements:

               (a)    will be prepared from the books and records of WesterFed
                      and its Subsidiaries;

               (b)    will present fairly the consolidated financial position
                      and consolidated operating results of WesterFed at the
                      times indicated and for the periods covered;

               (c)    will be prepared in accordance with GAAP (except for the
                      absence of notes) and with the regulations promulgated by
                      applicable regulatory authorities, to the extent then
                      applicable, subject to normal year-end adjustments; and

               (d)    will reflect all WesterFed's consolidated liabilities,
                      contingent or otherwise, on the respective dates and for
                      the respective periods covered, except for liabilities:
                      (1) not required to be so reflected in accordance with
                      GAAP or (2) not significant in amount.

        4.1.9  NO SOLICITATION. Neither WesterFed nor any of its officers,
               directors or any other person acting at the direction of
               WesterFed or the Bank, directly or indirectly, will


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               solicit, encourage, entertain, or facilitate any other proposals
               or inquiries for an acquisition of the shares or assets of
               WesterFed or any of its Subsidiaries or enter into discussions
               concerning any such acquisition, except as WesterFed's board of
               directors deems necessary to comply with its fiduciary duties to
               shareholders. Neither WesterFed nor any person acting on its
               behalf will make available to any person not affiliated with
               WesterFed or Glacier any information about WesterFed or its
               Subsidiaries that is not either routinely made available to the
               public generally or required by law, except as WesterFed's board
               of directors deems necessary to comply with its fiduciary duties
               to shareholders.

4.2     CONDUCT OF GLACIER'S BUSINESS BEFORE CLOSING. Before Closing, Glacier
        promises as follows:

        4.2.1  AVAILABILITY OF GLACIER'S BOOKS, RECORDS AND PROPERTIES.

               (a)    Glacier will make its, and cause its Subsidiaries to make
                      their, books, records, properties, contracts and documents
                      available at all reasonable times to WesterFed and its
                      counsel, accountants and other representatives. These
                      items will be open for inspection, audit and direct
                      verification of: (1) loan or deposit balances, (2)
                      collateral receipts and (3) any other transactions or
                      documentation WesterFed may find reasonably relevant to
                      the Transaction. Glacier will, and will cause its
                      Subsidiaries to, cooperate fully in any such inspection,
                      audit, or direct verification procedures, and Glacier
                      will, and will cause its Subsidiaries to, make available
                      all information reasonably required by or on behalf of
                      WesterFed.

               (b)    At WesterFed's request, Glacier will request any third
                      parties involved in the preparation or review of (1)
                      Glacier Financial Statements, (2) Subsequent Glacier
                      Financial Statements, or (3) any audits of Glacier's
                      operations, loan portfolios or other assets, to disclose
                      to WesterFed the work papers or any similar materials
                      related to these items (to the extent permitted by
                      Glacier's outside auditors).

        4.2.2  CERTAIN PROHIBITED ACTIVITIES.

               (a)    Glacier shall not declare or pay any cash dividend, or
                      make any other cash distribution, with respect to Glacier
                      Common Stock, other than its regular quarterly dividend in
                      an amount not to exceed $0.15 per share and special
                      dividends consistent with past practice, in an amount not
                      to exceed $0.05 per share; and

               (b)    neither Glacier nor any of its Subsidiaries will acquire
                      any assets (including the capital stock of, or ownership
                      interest in, another entity) outside the ordinary course
                      of business, except that Glacier and/or its financial
                      institution Subsidiaries may acquire the assets and
                      liabilities of or capital stock of one or more financial
                      institutions so long as the deposit liabilities acquired
                      or assumed in all such transactions do not exceed

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<PAGE>   133


                      $200 million in the aggregate; provided the foregoing
                      shall not apply to the purchase of branches, deposits and
                      associated loan assets from Wells Fargo and First Security
                      Bank, N.A. on terms and conditions consistent with those
                      previously disclosed by Glacier to WesterFed.

        4.2.3  CONDUCT REGARDING REPRESENTATIONS. Glacier will not do or cause
               to be done anything that would cause any representation made by
               it in Section 3.1 to be untrue at Closing, except as consented to
               in writing by WesterFed.

        4.2.4  MAINTENANCE OF PROPERTIES. Glacier will, and shall cause each of
               its Subsidiaries to, maintain its properties and equipment (and
               related insurance or its equivalent) in accordance with good
               business practice.

        4.2.5  PRESERVATION OF BUSINESS ORGANIZATION. Glacier will, and shall
               cause each of its Subsidiaries to, use all reasonable efforts to:

               (a)    preserve its business organization;

               (b)    retain the services of present employees; and

               (c)    preserve the goodwill of suppliers, customers and others
                      with whom it has business relationships.

        4.2.6  UPDATE OF FINANCIAL STATEMENTS. Glacier will promptly deliver its
               Financial Statements to WesterFed. Glacier will deliver
               Subsequent Glacier Financial Statements to WesterFed by the
               earlier of: (1) 5 days after WesterFed has prepared and issued
               them or (2) 60 days after year-end for year-end statements and 30
               days after the end of the quarter for quarterly statements. The
               Subsequent Glacier Financial Statements:

               (a)    will be prepared from the books and records of Glacier and
                      its Subsidiaries;

               (b)    will present fairly the consolidated financial position
                      and consolidated operating results of Glacier at the times
                      indicated and for the periods covered;

               (c)    will be prepared in accordance with GAAP (except for the
                      absence of notes) and with the regulations promulgated by
                      applicable regulatory authorities, to the extent then
                      applicable, subject to normal year-end adjustments; and

               (d)    will reflect all Glacier's consolidated liabilities,
                      contingent or otherwise, on the respective dates and for
                      the respective periods covered, except for liabilities:
                      (1) not required to be so reflected in accordance with
                      GAAP or (2) not significant in amount.


                                      A-35
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4.3     REGISTRATION STATEMENT.

        4.3.1  PREPARATION OF REGISTRATION STATEMENT.

               (a)    A Registration Statement on Form S-4 ("Registration
                      Statement") will be filed by Glacier with the SEC under
                      the Securities Act for registration of the shares of
                      Glacier Common Stock to be issued in the Transaction, and
                      the parties will prepare a related prospectus/proxy
                      statement ("Prospectus/Proxy Statement") to be mailed
                      together with any amendments and supplements to
                      shareholders of Glacier and WesterFed.

               (b)    The parties will cooperate with each other in preparing
                      the Registration Statement and Prospectus/Proxy Statement,
                      and will use their best efforts to: (1) file the
                      Registration Statement with the SEC within 45 days
                      following the date of this Agreement, and (2) obtain the
                      clearance of the SEC, any appropriate state securities
                      regulators and any other required regulatory approvals, to
                      issue the Prospectus/Proxy Statement.

               (c)    Nothing will be included in the Registration Statement or
                      the Prospectus/Proxy Statement or any proxy solicitation
                      materials with respect to any party to this Agreement or
                      its Subsidiaries unless approved by that party, which
                      approval will not be unreasonably withheld.

               (d)    Glacier will pay all costs associated with the preparation
                      by Glacier's counsel and the filing of the Registration
                      Statement and the Prospectus/Proxy Statement. WesterFed
                      will pay all costs associated with the review and
                      preparation by WesterFed's counsel of the Registration
                      Statement and the Prospectus/Proxy Statement. Glacier and
                      WesterFed will each pay the costs associated with the
                      printing and mailing of the Prospectus/Proxy Statement to
                      its shareholders and any other direct costs incurred by it
                      in connection with the Prospectus/Proxy Statement.

        4.3.2  SUBMISSION TO SHAREHOLDERS.

               (a)    Glacier and WesterFed will submit the Prospectus/Proxy
                      Statement to, and will use their best efforts in good
                      faith to obtain the prompt approval of the
                      Prospectus/Proxy Statement by, all applicable regulatory
                      authorities. The parties will provide each other with
                      copies of such submissions for review.

               (b)    Glacier and WesterFed will each promptly take the actions
                      necessary in accordance with applicable law and its
                      Certificate of Incorporation and Bylaws to convene a
                      shareholders' meeting to consider the adoption of this
                      Agreement and to authorize the transactions contemplated
                      by this Agreement. This shareholders' meetings will be
                      held on the earliest practical date after the date the
                      Prospectus/Proxy Statement may first be sent to
                      shareholders of Glacier and WesterFed without objection by
                      applicable Governmental Entities; but each party will have
                      at least 20 calendar days to solicit proxies. Except as
                      otherwise deemed necessary by


                                      A-36
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                      its board of directors to comply with its fiduciary duties
                      to shareholders, Glacier's and WesterFed's boards of
                      directors will recommend adoption of this Agreement to
                      their respective shareholders.

4.4     AFFILIATE LIST. Certain persons may be deemed "affiliates" of WesterFed
        under Securities Act Rule 145. Within 30 days following the date of this
        Agreement, WesterFed will deliver to Glacier, after consultation with
        legal counsel, a list of names and addresses of WesterFed's "affiliates"
        with respect to the Transaction within the meaning of Rule 145. By the
        Effective Date, WesterFed will use its best efforts to deliver, or cause
        to be delivered, to Glacier a letter from each of these "affiliates,"
        and any additional person who becomes an "affiliate" before the
        Effective Date and after the date of the list, dated as of the date of
        its delivery and in the form attached as Exhibit C.

4.5     SUBMISSION TO REGULATORY AUTHORITIES. Representatives of Glacier, at
        Glacier's expense, will prepare and file with applicable regulatory
        agencies, applications for approvals, waivers or other actions their
        counsel finds necessary or desirable in order to consummate the
        Transaction. Glacier will provide copies of these applications for
        WesterFed's review. These applications and filings are expected to
        include an application to the Federal Reserve Board.

4.6     ANNOUNCEMENTS. The parties will cooperate and consult with each other in
        the development and distribution of all news releases and other public
        information disclosures with respect to this Agreement or the
        Transaction, unless otherwise required by law in the reasonable opinion
        of such party's counsel.

4.7     CONSENTS. Glacier and WesterFed will use their best efforts to obtain
        the consent or approval of any person, organization or other entity
        (including any applicable Governmental Entity) whose consent or approval
        is required in order to consummate the Transaction.

4.8     FURTHER ACTIONS. Glacier and WesterFed, respectively, in the name and on
        behalf of those respective parties, will use their best efforts in good
        faith to make all such arrangements, do or cause to be done all such
        acts and things, and execute and deliver all such certificates and other
        instruments and documents as may be reasonably necessary or appropriate
        in order to consummate the Transaction as promptly as practicable.

4.9     NOTICE. Glacier and WesterFed will each provide the other with prompt
        written notice of the following:

               (a)    any events, individually or in the aggregate, that could
                      have a Material Adverse Effect with respect to the
                      notifying party; or

               (b)    the commencement of any proceeding against the notifying
                      party, or any of its Subsidiaries or affiliates, by or
                      before any court or governmental agency that, individually
                      or in the aggregate, might have a Material Adverse Effect
                      with respect to the notifying party.


                                      A-37
<PAGE>   136

4.10    CONFIDENTIALITY. Glacier and WesterFed each will hold in confidence all
        nonpublic information obtained from the other in connection with the
        Transaction, other than information that: (1) is required by law to be
        disclosed; (2) is otherwise available on a nonconfidential basis; (3)
        has become public without fault of the disclosing party; or (4) is
        necessary to the defense of one of the parties in a legal or
        administrative action brought against that party by the other party. If
        the Transaction is not completed, Glacier and WesterFed will: (1) each
        return to the other all confidential documents obtained by it from such
        other party and (2) not use or disclose any nonpublic information
        obtained under this Agreement or in connection with the Transaction or
        the nature or extent of any negotiations between the parties.

4.11    NASDAQ LISTING. Glacier agrees to use its reasonable best efforts to
        list, prior to the Effective Date, on the Nasdaq National Market,
        subject to official notice of issuance, the shares of Glacier Common
        Stock to be issued to the holders of WesterFed Common Stock in the
        Merger, and the shares of Glacier Common Stock to be issued upon the
        exercise of Assumed Options.

4.12    REGISTRATION OF ASSUMED OPTION SHARES. As soon as practicable after the
        Effective Date, Glacier shall file an appropriate registration statement
        with respect to the shares of Glacier Common Stock subject to Assumed
        Options and shall use its reasonable best efforts to maintain the
        effectiveness of such registration statement or registration statements
        (and maintain the current status of the prospectus or prospectuses
        contained therein) for so long as such options remain outstanding.

4.13    CERTAIN POLICIES. After all conditions to the consummation of the Merger
        set forth in Section 5 have been satisfied or waived, WesterFed and the
        Bank will, consistent with GAAP and methodology agreed upon by the
        parties, modify its loan, litigation, and real estate valuation policies
        and practices (including loan classifications and levels of reserves) so
        as to be applied on a basis that is consistent with that of Glacier.

                                    SECTION 5
                            APPROVALS AND CONDITIONS

5.1     REQUIRED APPROVALS. The obligations of the parties to this Agreement are
        subject to the approval of this Agreement and the Transaction by all
        appropriate regulatory agencies having jurisdiction with respect to the
        Transaction.

5.2     CONDITIONS TO GLACIER'S OBLIGATIONS. All of Glacier's obligations under
        this Agreement are subject to satisfaction (or waiver by Glacier) of the
        following conditions at or before Closing:

        5.2.1  REPRESENTATIONS. WesterFed's representations in this Agreement
               and in any certificate or other instrument delivered in
               connection with this Agreement are true and correct in all
               material respects at Closing (except to the extent that they
               expressly relate to an earlier date, in which case they are true
               in all material respects as of that earlier date). These
               representations have the same force and effect as if they had
               been made at Closing. WesterFed has delivered to Glacier its


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               certificate, executed by a duly authorized officer of WesterFed
               and dated as of Closing, stating that these representations
               comply with this Subsection 5.2.1.

        5.2.2  COMPLIANCE. WesterFed has performed and complied with all
               material terms, covenants and conditions of this Agreement.
               WesterFed's certificate referred to in Subsection 5.2.1 states
               that the conditions identified in this Subsection 5.2.2 are
               satisfied.

        5.2.3  NO MATERIAL ADVERSE EFFECT. No damage, destruction, or loss
               (whether or not covered by insurance) or other event or sequence
               of events has occurred which, individually or in the aggregate,
               has had or is reasonably likely to have a Material Adverse Effect
               with respect to WesterFed. WesterFed's certificate referred to in
               Subsection 5.2.1 states that the conditions identified in this
               Subsection 5.2.3 are satisfied.

        5.2.4  NO GOVERNMENTAL PROCEEDINGS. No action or proceeding has been
               commenced or threatened by any governmental agency to restrain or
               prohibit or invalidate the Transaction.

        5.2.5  ACTION. The shareholders of Glacier and WesterFed, respectively,
               have each adopted this Agreement.

        5.2.6  TAX OPINION. Glacier, at Glacier's expense, has obtained from
               Graham & Dunn, P.C. an opinion to the effect that, the
               Transaction will qualify as a reorganization within the meaning
               of IRC Section 368(a)(1)(A) and that each of Glacier and
               WesterFed will be a "party to a reorganization" within the
               meaning of Section 368(b).

        5.2.7  REGISTRATION STATEMENT. The Registration Statement, as described
               in Section 4.3 and as it may have been amended, has become
               effective, and no stop order suspending the effectiveness of such
               Registration Statement has been issued or remains in effect, and
               no proceedings for that purpose have been initiated or threatened
               by the SEC the basis for which still exists.

        5.2.8  CONSENTS. WesterFed has obtained the consents as indicated in
               Schedule 3.1.13(b)-W, but only to the extent that the absence of
               one or more consents is reasonably likely to result in a Material
               Adverse Effect to Glacier.

        5.2.9  SOLICITATION OF EMPLOYEES. Neither any member of WesterFed's
               board of directors nor any entity with which any such director is
               affiliated has solicited any employee of WesterFed, Glacier or
               any of their respective Subsidiaries with the intention of
               causing the employee to terminate his or her employment with
               WesterFed, Glacier or any of their respective Subsidiaries, as
               the case may be.

        5.2.10 DIRECTOR APPOINTMENT. Effective as of Closing, WesterFed has
               appointed Michael J. Blodnick and William L. Bouchee to serve on
               the Bank's board of directors.


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        5.2.11 OTHER MATTERS. Glacier has received any other opinions,
               certificates, and documents that Glacier reasonably requests in
               connection with this Agreement and the Transaction.

        5.2.12 FAIRNESS OPINIONS.

               (a)    WesterFed has received from Putnam Lovell, an updated
                      fairness opinion at WesterFed's expense, dated as of or
                      immediately before WesterFed mails the Prospectus/Proxy
                      Statement to its shareholders, to the effect that the
                      Merger Consideration is fair to the shareholders of
                      WesterFed from a financial point of view, and a copy of
                      such updated opinion has been supplied to Glacier. Glacier
                      will provide WesterFed's investment advisor with any
                      information reasonably requested for the purpose of
                      issuing a fairness opinion.

               (b)    Glacier has received from Davidson an updated fairness
                      opinion at Glacier's expense, dated as of or immediately
                      before Glacier mails the Prospectus/Proxy Statement to its
                      shareholders, to the effect that the Merger Consideration
                      to be paid by Glacier in connection with the Merger is
                      fair to the shareholders of Glacier from a financial point
                      of view. WesterFed will provide Glacier's investment
                      advisor with any information reasonably requested for the
                      purpose of issuing a fairness opinion.

5.3     CONDITIONS TO WESTERFED'S OBLIGATIONS. All of WesterFed's obligations
        under this Agreement are subject to satisfaction (or waiver by
        WesterFed) of the following conditions at or before Closing:

        5.3.1  REPRESENTATIONS. Glacier's representations and warranties in this
               Agreement and in any certificate or other instrument delivered in
               connection with this Agreement are true and correct in all
               material respects at Closing (except to the extent that they
               expressly relate to an earlier date, in which case they are true
               in all material respects as of that earlier date). These
               representations and warranties have the same force and effect as
               if they had been made at Closing. Glacier has delivered to
               WesterFed its certificate, executed by a duly authorized officer
               of Glacier and dated as of Closing, stating that these
               representations and warranties comply with this Subsection 5.3.1

        5.3.2  COMPLIANCE. Glacier has performed and complied in all material
               respects with all terms, covenants and conditions of this
               Agreement. Glacier's certificate referred to in Subsection 5.3.1
               states that the conditions identified in this Subsection 5.3.2
               are satisfied.

        5.3.3  NO MATERIAL ADVERSE EFFECT. No damage, destruction, loss or other
               event or sequence of events has occurred which, individually or
               in the aggregate, has had or is reasonably likely to have a
               Material Adverse Effect with respect to Glacier. Glacier's
               certificate referred to in Subsection 5.3.1 states that the
               conditions identified in this Subsection 5.3.3 are satisfied.


                                      A-40
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        5.3.4  NO GOVERNMENTAL PROCEEDINGS. No action or proceeding has been
               commenced or threatened by any governmental agency to restrain,
               prohibit or invalidate the Transaction.

        5.3.5  SHAREHOLDER ACTION. The shareholders of Glacier and WesterFed,
               respectively, have each adopted this Agreement.

        5.3.6  TAX OPINION. WesterFed has, at WesterFed's expense, obtained from
               Silver, Freedman & Taff, L.L.P., an opinion to the effect that
               the Transaction will qualify as a reorganization within the
               meaning of IRC Section 368(a)(1)(A) and that each of Glacier and
               WesterFed will be a "party to a reorganization" within the
               meaning of Section 368(b).

        5.3.7  REGISTRATION STATEMENT. The Registration Statement described in
               Subsection 4.3 and as it may have been amended, has become
               effective, and no stop order suspending the effectiveness of such
               Registration Statement has been issued or remains in effect, and
               no proceedings for that purpose have been initiated or threatened
               by the SEC the basis for which still exists.

        5.3.8  DIRECTOR APPOINTMENT. Effective as of Closing, Glacier has
               appointed Ralph K. Holliday to serve on Glacier's board of
               directors.

        5.3.9  NASDAQ LISTING. The shares of Glacier Common Stock to be issued
               in the Merger shall have been approved for listing on the Nasdaq
               National Market, subject to official notice of issuance.

        5.3.10 FAIRNESS OPINION.

               (a)    WesterFed has received from Putnam Lovell an updated
                      fairness opinion at WesterFed's expense, dated as of or
                      immediately before WesterFed mails the Prospectus/Proxy
                      statement to its shareholders, to the effect that the
                      Merger Consideration is fair to the shareholders of
                      WesterFed from a financial point of view. Glacier will
                      provide WesterFed's investment advisor with any
                      information reasonably requested for the purpose of
                      issuing a fairness opinion.

               (b)    Glacier has received from Davidson an updated fairness
                      opinion at Glacier's expense, dated as of or immediately
                      before Glacier mails the Prospectus/Proxy Statement to its
                      shareholders, to the effect that the Merger Consideration
                      to be paid by Glacier in connection with the Merger is
                      fair to the shareholders of Glacier from a financial point
                      of view, and a copy of such updated opinion has been
                      supplied to WesterFed. WesterFed will provide Glacier's
                      investment advisor with any information reasonably
                      requested for the purpose of issuing a fairness opinion.


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                                    SECTION 6
                        DIRECTORS, OFFICERS AND EMPLOYEES

6.1     DIRECTORS. As a condition to the execution of this Agreement, each
        member of WesterFed's (other than David W. Jorgenson) and Glacier's
        boards of directors has entered into the written agreement described in
        Recital F with Glacier and WesterFed on or before the date of this
        Agreement.

6.2     EMPLOYMENT AGREEMENTS. As a condition to the execution of this
        Agreement, Glacier has entered into employment agreements, effective as
        of the Effective Date, with Ralph K. Holliday, WesterFed's and the
        Bank's current President and Chief Executive Officer; James A.
        Salisbury, WesterFed's and the Bank's Executive Vice President and Chief
        Financial Officer; Marcia Johnson, the Bank's current Senior Vice
        President Central Operations Manager; Barry Johnston, the Bank's current
        Senior Vice President - Credit Administration and John Cromwell, the
        Bank's current Senior Vice President Human Resources. As part of these
        employment agreements, all such individuals will, as of the Effective
        Date, waive all rights they may have under any previous employment or
        change in control agreements with WesterFed and/or the Bank.

6.3     EMPLOYEES. Employees of WesterFed and its Subsidiaries who remain
        employed after the Effective Date will be eligible to participate in all
        of the benefit, welfare, bonus, incentive, stock, and similar plans of
        Glacier and its Subsidiaries that are generally available to similarly
        situated employees of Glacier and/or its Subsidiaries in accordance with
        and subject to the terms and provisions of such plans, with credit for
        years of service with WesterFed and its Subsidiaries (including service
        with any entity acquired by WesterFed or the Bank) for the purpose of
        determining eligibility for participation, vesting and accrual of
        benefits (including vacation time and sick pay, but not for the purpose
        of accrual of benefits under any qualified defined benefit plan of
        Glacier or any of its Subsidiaries). Contributions to (and accrual of
        benefits, to the extent applicable, if any) under plans of Glacier and
        its Subsidiaries on behalf of continuing employees of WesterFed and its
        Subsidiaries shall only relate to compensation earned by such employees
        after the Effective Date subject to the terms and provisions of such
        plans. Glacier shall use commercially reasonable efforts to cause any
        and all pre-existing condition limitations (to the extent such
        limitations did not apply to a pre-existing condition under the
        corresponding WesterFed health plan) and eligibility waiting periods
        under its health plan to be waived with respect to the employees of
        WesterFed and its Subsidiaries who continue employment after the
        Effective Date and their eligible dependents. To the extent that any
        employee of WesterFed or its Subsidiaries continues employment after the
        Effective Date and he or she has satisfied in whole or in part any
        annual deductible under the WesterFed health plan, or has paid any
        out-of-pocket expenses pursuant to the WesterFed health plan
        co-insurance provisions, such amount shall be counted toward the
        satisfaction of any applicable deductible or out-of-pocket expense
        maximum, respectively, under Glacier's health plan.


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6.4     INDEMNIFICATION; DIRECTOR AND OFFICER INSURANCE.

        6.4.1  Glacier agrees that from and after the Effective Date until six
               years following the Effective Date, Glacier will indemnify and
               hold harmless each present and former director and officer of
               WesterFed and its Subsidiaries, determined as of the Effective
               Date (the "Indemnified Parties"), against any costs or expenses
               (including reasonable attorneys' fees), judgments, fines, losses,
               claims, damages or liabilities (collectively, "Costs") incurred
               in connection with any claim, action, suit, proceeding or
               investigation, whether civil, criminal, administrative or
               investigative, arising out of or pertaining to matters existing
               or occurring at or prior to the Effective Date, whether asserted
               or claimed prior to, at or after the Effective Date, to the
               fullest extent that WesterFed would have been permitted under
               Delaware law (or the Bank would have been permitted under federal
               law, if applicable) and the certificate of incorporation (or
               charter of the Bank, if applicable) or bylaws of WesterFed or the
               Bank in effect on the date of this Agreement to indemnify such
               person (and Glacier will also advance expenses as incurred to the
               fullest extent permitted under applicable law; provided, that the
               person to whom expenses are advanced provides an undertaking to
               repay such advances if it is ultimately determined that such
               person is not entitled to indemnification).

        6.4.2  To the extent that Subsection 6.4.1 will not serve to indemnify
               and hold harmless an Indemnified Party, for a period of six years
               after the Effective Date, Glacier agrees that it will, subject to
               the terms set forth herein, indemnify and hold harmless, to the
               fullest extent permitted under applicable law (and Glacier will
               also advance expenses as incurred to the fullest extent permitted
               under applicable law, provided, that the person to whom expenses
               are advanced provides an undertaking to repay such advances if it
               is ultimately determined that such person is not entitled to
               indemnification), each Indemnified Party against any Costs
               incurred in connection with any claim, action, suit, proceeding
               or investigation, whether civil, criminal, administrative or
               investigative, arising out of or pertaining to the Transaction.
               In the event any claim or claims are asserted or made within such
               six-year period, all rights to indemnification in respect of any
               such claim or claims will continue until final disposition of any
               and all such claims.

        6.4.3  Any Indemnified Party wishing to claim indemnification under
               Subsection 6.4.1 or 6.4.2, upon learning of any such claim,
               action, suit, proceeding or investigation, will promptly notify
               Glacier, but the failure to so notify will not relieve Glacier of
               any liability it may have to such Indemnified Party if such
               failure does not materially prejudice Glacier. In the event of
               any such claim, action, suit, proceeding or investigation
               (whether arising before or after the Effective Date), Glacier
               will have the right to assume the defense thereof and Glacier
               will not be liable to such Indemnified Parties for any legal
               expenses of other counsel or any other expenses subsequently
               incurred by such Indemnified Parties in connection with the
               defense thereof, except that, if Glacier elects not to assume
               such defense or counsel for the Indemnified Parties advises that
               there are issues which raise conflicts of interest between
               Glacier and the Indemnified


                                      A-43
<PAGE>   142

               Parties, the Indemnified Parties may retain counsel satisfactory
               to them, and Glacier will pay all reasonable fees and expenses of
               such counsel for the Indemnified Parties promptly as statements
               therefore are received. If such indemnity is not available with
               respect to any Indemnified Party, then Glacier and the
               Indemnified Parties will contribute to the amount payable in such
               proportion as is appropriate to reflect relative faults and
               benefits.

        6.4.4  For a period of six years from and after the Effective Date,
               Glacier shall use commercially reasonable efforts to cause to be
               maintained in effect the current policies of directors' and
               officers' liability insurance maintained by WesterFed and its
               Subsidiaries (provided that Glacier may substitute therefor
               policies from a financially capable insurer of at least the same
               coverage and amount containing terms and conditions which are
               substantially no less advantageous, or in the event such coverage
               is provided through Glacier's current insurer it may be on terms
               and conditions (other than coverage and amounts) consistent with
               Glacier's current coverage), or in lieu thereof Glacier will
               obtain or permit WesterFed to obtain single limit tail coverage
               for such period, with respect to claims arising from facts or
               events which occurred on or before the Effective Date. Following
               consummation of the Merger, the directors and officers of Glacier
               and its Subsidiaries (including the Bank) will be covered by the
               directors' and officers' liability insurance maintained by
               Glacier and its Subsidiaries.

        6.4.5  The obligations of Glacier provided under Subsections 6.4.1 -
               6.4.4 are intended to be enforceable against Glacier directly by
               the Indemnified Parties and will be binding on all respective
               successors and assigns of Glacier.

6.5     EMPLOYEE BENEFIT ISSUES.

        6.5.1  EMPLOYEE STOCK OWNERSHIP PLAN. With respect to WesterFed's
               Employee Stock Ownership Plan (the "ESOP"), WesterFed will:

               (a)    take any action it deems appropriate to amend the ESOP to
                      allocate contributions on a pro-rata basis (based upon
                      existing methodology for allocating annual contributions)
                      through the day next preceding the Effective Date and to
                      eliminate any requirement that a participant must be
                      employed on the last day of the plan year to receive a
                      contribution allocation;

               (b)    take any actions necessary to cause the ESOP to be
                      terminated and for the balances in all Accounts (as
                      defined in the ESOP) to become fully vested and
                      nonforfeitable as of the Effective Date;

               (c)    use its best efforts to cause the Trustee of the ESOP to
                      make such elections under Section 1.6 of this Agreement
                      with respect to unallocated WesterFed Common Stock as are
                      necessary to obtain cash at least equal to the remaining
                      ESOP indebtedness;



                                      A-44
<PAGE>   143

               (d)    cause the Trustee to use such cash (and convert
                      unallocated Glacier Common Stock received in the Merger to
                      cash, if applicable), to repay in full all such
                      outstanding ESOP indebtedness as soon as is practicable
                      after the Effective Date;

               (e)    take any action it deems appropriate (including amending
                      the ESOP) to cause the shares of Glacier Common Stock
                      received in the Merger and/or any cash remaining in the
                      suspense account maintained under the ESOP, after giving
                      effect to the repayment of ESOP indebtedness referred to
                      in subparagraph (c) above, to be allocated as investment
                      earnings of the ESOP (as of the Effective Date) to the
                      accounts of all ESOP participants who have account
                      balances as of the Effective Date, in proportion to the
                      aggregate value of their respective Stock Accounts and
                      Investment Accounts (as defined in the ESOP) in accordance
                      with the applicable provisions of the ESOP;

               (f)    cause the account balances of all ESOP participants to be
                      distributed in a lump sum (or transferred in accordance
                      with Section 401(a)(31) of the IRC) as soon as practicable
                      following the later of (A) the Effective Date or (B) the
                      date of receipt of a favorable determination letter from
                      the Internal Revenue Service regarding the qualified
                      status of the ESOP upon its termination; and

               (g)    adopt amendment(s) to the ESOP, in form and substance
                      reasonably satisfactory to Glacier, which includes and
                      provides for the actions described in subparagraphs (b),
                      (c), (d), (e) and (f) above or as may be requested by the
                      Internal Revenue Service in connection with the request
                      for a determination letter (including provisions to comply
                      with applicable tax law changes).

        6.5.2  FIRF PLAN. WesterFed will, and will cause its participating
               Subsidiaries to, withdraw from the FIRF Plan effective on or
               before the Effective Date. In addition, WesterFed will, and will
               cause its participating Subsidiaries to, take all necessary
               action prior to their withdrawal from the FIRF Plan to amend the
               benefit formula for their employee participants under the FIRF
               Plan to eliminate any unfunded liability on the part of WesterFed
               and its participating Subsidiaries to the FIRF Plan, or if the
               unfunded liability cannot be eliminated, to minimize the amount
               of the unfunded liability, in each case, to the extent permitted
               by the FIRF Plan, ERISA, the IRC or any other applicable law.

        6.5.3  TERMINATION AND TRANSFER/MERGER OF PLANS. As soon as practicable
               after Effective Date, all other employee benefit plans of
               WesterFed and its Subsidiaries will be terminated and the
               interests of continuing employees in those plans will be
               transferred or merged into Glacier's employee benefit plans.

        6.5.4  NO CONTRACT CREATED. Nothing in this Agreement gives any employee
               of WesterFed or its Subsidiaries a right to continuing
               employment.


                                      A-45
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                                    SECTION 7
                          TERMINATION OF AGREEMENT AND
                           ABANDONMENT OF TRANSACTION

7.1     TERMINATION BY REASON OF LAPSE OF TIME. If Closing does not occur before
        the Termination Date, either Glacier or WesterFed may terminate this
        Agreement and the Transaction if all of the following conditions are
        present:

        (a)    the terminating party's board of directors decides to terminate
               by a majority vote of its members;

        (b)    the terminating party delivers to the other party written notice
               that its board of directors has voted in favor of termination;
               and

        (c)    the failure to consummate the Transaction by the Termination Date
               is not due to a breach by the party seeking termination of any of
               its obligations, covenants, or representations in this Agreement.

7.2     OTHER GROUNDS FOR TERMINATION. This Agreement and the Transaction may be
        terminated at any time before Closing (whether before or after
        applicable approval of this Agreement by the shareholders of the
        parties, unless otherwise provided) as follows:

        7.2.1  MUTUAL CONSENT. By mutual consent of WesterFed and Glacier, if
               the boards of directors of each party agrees to terminate by a
               majority vote of its members.

        7.2.2  WESTERFED'S CONDITIONS NOT MET. By Glacier's board of directors
               if, by June 30, 2001, any condition set forth in Section 5.1 or
               5.2 has not been satisfied (or at any time following the failure
               of the shareholders of either party to adopt this Agreement at a
               duly convened meeting held to vote on the adoption of this
               Agreement).

        7.2.3  GLACIER'S CONDITIONS NOT MET. By WesterFed's board of directors
               if, by June 30, 2001, any condition set forth in Section 5.1 or
               5.3 has not been satisfied (or at any time following the failure
               of the shareholders of either party to adopt this Agreement at a
               duly convened meeting held to vote on the adoption of this
               Agreement).

        7.2.4  WESTERFED FAILS TO RECOMMEND SHAREHOLDER APPROVAL. By Glacier's
               board of directors before WesterFed's shareholders adopt this
               Agreement, if WesterFed's board of directors: (a) fails to
               recommend to its shareholders the adoption of this Agreement or
               (b) modifies, withdraws or changes in a manner adverse to Glacier
               its recommendation to shareholders to adopt this Agreement.

        7.2.5  GLACIER FAILS TO RECOMMEND SHAREHOLDER APPROVAL. By WesterFed's
               board of directors before Glacier's shareholders adopt this
               Agreement, if Glacier's board of directors: (a) fails to
               recommend to its shareholders the adoption of this Agreement or
               (b) modifies, withdraws or changes in a manner adverse to
               WesterFed its recommendation to shareholders to adopt this
               Agreement.


                                      A-46
<PAGE>   145

        7.2.6  IMPRACTICABILITY. By either Glacier or WesterFed, upon written
               notice given to the other party, if the board of directors of the
               party seeking termination under this Subsection 7.2.6 has
               determined in its sole judgment, made in good faith and after due
               consideration and consultation with counsel, that the Transaction
               has become inadvisable or impracticable by reason of the
               institution of litigation by the federal government or the
               government of any state to restrain or invalidate the Transaction
               or this Agreement.

        7.2.7  AVERAGE CLOSING PRICE LESS THAN $9.00. By WesterFed, if its board
               of directors so determines by an affirmative vote of the majority
               of its members, if the Average Closing Price is less than $9.00.
               If WesterFed elects to exercise its termination right pursuant to
               the preceding sentence, the following provisions will apply:

               (a)    WesterFed will give written notice of its election to
                      Glacier no later than the end of the third Business Day
                      following the Determination Date. A "Business Day" means a
                      calendar day other than a Saturday, Sunday or any other
                      day that is a day on which banking institutions in Montana
                      are authorized or obligated by law or executive order to
                      close.

               (b)    Within ten Business Days following the Determination Date,
                      Glacier may elect by written notice to WesterFed to
                      increase the Merger Consideration to be received by the
                      holder of each share of WesterFed Common Stock as provided
                      in Subsection 1.4.1(g)(3).

               (c)    If Glacier elects to increase the Merger Consideration, it
                      may do so in a combination of additional cash or
                      additional shares of Glacier Common Stock, notwithstanding
                      any election made pursuant to Section 1.6, provided that
                      (notwithstanding any other provision of this Agreement) in
                      no event will less than 45% of the total value of the
                      Merger Consideration be paid in Glacier Common Stock based
                      upon the per share closing price of Glacier Common Stock
                      on the Effective Date, or if the Effective Date is not a
                      trading day, then the closing price on the most recent
                      trading day prior to the Effective Date calculated as if
                      all Dissenting Shares received the Cash Distribution.

               (d)    If Glacier makes the election contemplated by paragraphs
                      (b) and (c) above, by giving timely written notice to
                      WesterFed, no termination will occur pursuant to this
                      Subsection 7.2.7 and this Agreement will remain in effect
                      according to its terms (except as the Merger Consideration
                      has been supplemented).

        7.2.8  AVERAGE CLOSING PRICE LESS THAN $7.50. By Glacier, if its board
               of directors so determines by an affirmative vote of the majority
               of its members of the Average Closing Price is less than or equal
               to $7.50.


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7.3     GLACIER LIQUIDATED DAMAGES.

        7.3.1  PAYMENT OF LIQUIDATED DAMAGES. Due to expenses, direct and
               indirect, incurred by WesterFed in negotiating and executing this
               Agreement and in taking steps to effect the Transaction, and the
               loss by it of other opportunities, Glacier will pay to WesterFed
               $3.5 million if (1) after a Triggering Event the shareholders of
               Glacier fail to adopt this Agreement or (2) WesterFed terminates
               this Agreement under Subsection 7.2.5. The foregoing amount
               represents agreed upon liquidated damages and will be payable on
               WesterFed's demand and must be paid by Glacier within three (3)
               Business Days after the date WesterFed makes the demand. However,
               if demand and payment is made pursuant to this subsection 7.3.1,
               then WesterFed will have no other rights or claims against
               Glacier under this Agreement, it being agreed that acceptance of
               liquidated damages under this subsection 7.3.1 by WesterFed will
               constitute its sole and exclusive remedy against Glacier.

        7.3.2  LIMITATION ON PAYMENT OF LIQUIDATED DAMAGES. No liquidated
               damages shall be payable pursuant to Subsection 7.3.1 if (i)
               Glacier terminates, or has the right to terminate, this Agreement
               pursuant to Subsection 7.2.2 (solely on account of the willful
               breach of WesterFed) or Section 7.2.4; or (ii) if at the
               WesterFed Meeting, the WesterFed shareholders fail to adopt this
               Agreement.

        7.3.3  DEFINITIONS. For purposes of this Agreement, the following terms
               will have the meanings set forth below:

               (a)    "Acquisition Proposal" means a proposal to engage in any
                      of the following: (1) a merger, consolidation or any
                      similar transaction involving Glacier or any of its
                      financial institution Subsidiaries (other than the
                      Transaction, acquisitions by Glacier and its financial
                      institution Subsidiaries that are not prohibited under
                      Subsection 4.2.2(b) or a merger or other transactions
                      between financial institution Subsidiaries of Glacier),
                      (2) a purchase, lease or other acquisition of all or
                      substantially all the assets of Glacier or any of its
                      financial institution Subsidiaries, other than in a
                      transaction between financial institution Subsidiaries of
                      Glacier, (3) a purchase or other acquisition of
                      "beneficial ownership" by any "person" or "group" (as such
                      terms are defined in Section 13(d)(3) of the Exchange Act)
                      (including by way of merger, consolidation, share
                      exchange, or otherwise) which would cause such person or
                      group to become the beneficial owner of securities
                      representing more than 19.9% of the voting power of
                      Glacier or any of its financial institution Subsidiaries,
                      (4) a tender or exchange offer to acquire securities
                      representing more than 19.9% of the voting power of
                      Glacier, (5) a public proxy or consent solicitation made
                      to the shareholders of Glacier seeking proxies in
                      opposition to the Transaction, or (6) the filing of an
                      application or notice with the Federal Reserve Board, the
                      FDIC, the OTS, the SEC, or any other federal or state
                      regulatory authority (which application has been accepted


                                      A-48
<PAGE>   147

                      for processing) seeking approval to engage in one or more
                      of the transactions referenced in clauses (1) through (5)
                      above.

               (b)    "Triggering Event" means Glacier's entering into, or the
                      public announcement of or any filing with a regulatory
                      authority or the SEC with respect to, an Acquisition
                      Proposal.

7.4     WESTERFED LIQUIDATED DAMAGES.

        7.4.1  PAYMENT OF LIQUIDATED DAMAGES. Due to expenses, direct and
               indirect, incurred by Glacier in negotiating and executing this
               Agreement and in taking steps to effect the Transaction, and the
               loss by it of other opportunities, WesterFed will pay to Glacier
               $4.5 million if (i) Glacier terminates this Agreement under
               subsection 7.2.4, or (ii) the shareholders of WesterFed do not
               adopt this Agreement at the WesterFed meeting after there has
               been proposed by a third party a WesterFed Acquisition
               Transaction (the "WesterFed Proposal"). The foregoing amount
               represents agreed upon liquidated damages and will be payable on
               Glacier's demand and must be paid by WesterFed within three (3)
               Business Days after the date Glacier makes the demand. However,
               if demand and payment is made pursuant to this subsection 7.4.1,
               then Glacier will have no other rights or claims against
               WesterFed under this Agreement, it being agreed that acceptance
               of liquidated damages under this subsection 7.4.1 by Glacier will
               constitute its sole and exclusive remedy against WesterFed.

        7.4.2  LIMITATION ON PAYMENT OF LIQUIDATED DAMAGES. No liquidated
               damages will be payable pursuant to subsection 7.4.1 if (i)
               Glacier or its assigns has acquired any shares pursuant to the
               exercise of its Option (as defined in the Stock Option
               Agreement), WesterFed has repurchased the Option pursuant to the
               Stock Option Agreement or WesterFed has paid Glacier or its
               assigns the Surrender Price (as defined in the Stock Option
               Agreement) pursuant to the Stock Option Agreement, (ii) Glacier
               refuses to execute and deliver a written release of all of
               Glacier's rights under the Stock Option Agreement and all claims,
               demands or causes of action that Glacier has or might have
               against WesterFed, under this Agreement against delivery by
               WesterFed of the $4.5 million liquidated damages set forth above,
               (iii) WesterFed terminates, or has the right to terminate, this
               Agreement pursuant to subsection 7.2.3 (solely on account of the
               willful breach of Glacier) or subsection 7.2.5, or (iv) if at the
               Glacier shareholders' meeting to vote on the adoption of this
               Agreement, the Glacier shareholders fail to adopt this Agreement.

        7.4.3  For purposes of the foregoing, "WesterFed Acquisition
               Transaction" shall have the same meaning as the term "Acquisition
               Transaction" in the Stock Option Agreement except that a
               percentage referred to in Section 2.1(a)(iii) thereof shall be
               25%.

7.5     COST ALLOCATION UPON TERMINATION. In connection with the termination of
        this Agreement under this Section 7, except as provided in Sections 7.3
        and 7.4, Glacier and WesterFed will each pay their own out-of-pocket
        costs incurred in connection with this


                                      A-49
<PAGE>   148

        Agreement, and neither party will have any liability to the other party,
        unless this Agreement is terminated or the Transaction is not
        consummated due to the willful breach of a party.

                                    SECTION 8
                                  MISCELLANEOUS

8.1     NOTICES. Any notice, request, instruction or other document given under
        this Agreement must be in writing and must either be delivered
        personally or via facsimile transmission or be sent by registered or
        certified mail, postage prepaid, and addressed as follows (or to any
        other address or person representing any party as designated by that
        party through written notice to the other party):

        Glacier                            Glacier Bancorp, Inc.
                                           49 Commons Loop
                                           Kalispell, MT  59903-0027
                                           Attn: Michael J. Blodnick

               with a copy to:             Graham & Dunn, P.C.
                                           1420 Fifth Avenue, 33rd Floor
                                           Seattle, WA  98101-2390
                                           Attn: Stephen M. Klein, Esq.
                                           Mark C. Lewington, Esq.

        WesterFed                          WesterFed Financial Corporation
                                           110 East Broadway
                                           P.O. Box 5388
                                           Missoula, MT 59806-5388
                                           Attn: Ralph K. Holliday

               with a copy to:             Silver, Freedman & Taff, L.L.P.
                                           1100 New York Avenue NW
                                           Suite 700 Washington, D.C. 20005-3934
                                           Attn: Barry P. Taff, P.C.

8.2     WAIVERS AND EXTENSIONS. Subject to Section 9, Glacier or WesterFed may
        grant waivers or extensions to the other party, but only through a
        written instrument executed by the Chief Executive Officer or President
        of the party granting the waiver or extension. Waivers or extensions
        which do not comply with the preceding sentence are not effective. In
        accordance with this Section 8.2, a party may extend the time for the
        performance of any of the obligations or other acts of any other party,
        and may waive:

               (a)    any inaccuracies in the representations and warranties of
                      the other party contained in this Agreement or in any
                      document delivered by the other party in connection with
                      this Agreement;

               (b)    compliance with any of the covenants of the other party;
                      and


                                      A-50
<PAGE>   149

               (c)    the other party's performance of any obligations under
                      this Agreement and any other condition precedent set out
                      in Section 5.

8.3     GENERAL INTERPRETATION. Except as otherwise expressly provided in this
        Agreement or unless the context clearly requires otherwise: (1) the
        defined terms defined in this Agreement include the plural as well as
        the singular and (2) references in this Agreement to Sections,
        Subsections, Schedules, and Exhibits refer to Sections and Subsections
        of and Schedules and Exhibits to this Agreement. Whenever the words
        "include", "includes", or "including" are used in this Agreement, the
        parties intend them to be interpreted as if they are followed by the
        words "without limitation." All accounting terms used in this Agreement
        that are not expressly defined in this Agreement have the respective
        meanings given to them in accordance with GAAP.

8.4     CONSTRUCTION AND EXECUTION IN COUNTERPARTS. Except as otherwise
        expressly provided in this Agreement or in any other agreement executed
        by the parties on or as of the date of this Agreement, this Agreement:
        (1) contains the parties' entire understanding, and no modification or
        amendment of its terms or conditions will be effective unless in writing
        and signed by the parties, or their respective duly authorized agents;
        (2) will not be interpreted by reference to any of the titles or
        headings to the Sections or Subsections, which have been inserted for
        convenience only and are not deemed a substantive part of this
        Agreement; (3) includes all amendments to this Agreement, each of which
        is made a part of this Agreement by this reference; and (4) may be
        executed in one or more counterparts, each of which will be deemed an
        original, but all of which taken together will constitute one and the
        same document.

8.5     SURVIVAL OF REPRESENTATIONS AND COVENANTS. The representations and
        covenants in this Agreement will not survive the Effective Date or
        termination of this Agreement, except that (1) Section 4.10
        (confidentiality), Sections 7.3 and 7.4 (liquidated damages fee), and
        Section 7.5 (expense allocation) will survive termination, (2) the
        representations and covenants will survive termination for the purpose
        of the pursuit and determination of the willful breach by a party which
        resulted in termination or non-consummation of the Transaction, and (3)
        the covenants in this Agreement that impose duties or obligations on a
        party following the Effective Date will survive the Effective Date.

8.6     ATTORNEYS' FEES AND COSTS. In the event of any dispute or litigation
        with respect to the terms and conditions or enforcement of rights or
        obligations arising by reason of this Agreement or the Transaction, the
        prevailing party in any such litigation will be entitled to
        reimbursement from the other party for its costs and expenses, including
        reasonable judicial and extra-judicial attorneys' fees, expenses and
        disbursements, and fees, costs and expenses relating to any such
        litigation.

8.7     ARBITRATION AND SPECIFIC PERFORMANCE. At either party's request, the
        parties must submit any dispute, controversy or claim arising out of or
        in connection with, or relating to, this Agreement or any breach or
        alleged breach of this Agreement, to arbitration under the American
        Arbitration Association's rules then in effect (or under any other form
        of arbitration mutually acceptable to the parties). A single arbitrator
        agreed on by the parties will conduct the arbitration. If the parties
        cannot agree on a single arbitrator, each


                                      A-51
<PAGE>   150

        party must select one arbitrator and those two arbitrators will select a
        third arbitrator. This third arbitrator will hear the dispute. The
        arbitrator's decision is final (except as otherwise specifically
        provided by law) and will bind the parties, and either party may request
        any court having jurisdiction to enter a judgment and to enforce the
        arbitrator's decision. The arbitrator will provide the parties with a
        written decision naming the substantially prevailing party in the
        action. This prevailing party is entitled to reimbursement from the
        other party for its costs and expenses, including reasonable attorneys'
        fees. The parties hereto agree that irreparable damage would occur in
        the event that any of the provisions of this Agreement were not
        performed in accordance with their specific terms or were otherwise
        breached. It is accordingly agreed that the parties will be entitled to
        an injunction or injunctions to prevent breaches of this Agreement and
        to enforce specifically the terms and provisions hereof in any court of
        the United States or any state having jurisdiction, this being in
        addition to any other remedy to which they are entitled at law or in
        equity.

8.8     GOVERNING LAW AND VENUE. This Agreement will be governed by and
        construed in accordance with Montana law, except to the extent that
        certain matters may be governed by federal law.

8.9     SEVERABILITY. If a court determines that any term of this Agreement is
        invalid or unenforceable under applicable law, the remainder of this
        Agreement will not be affected thereby, and each remaining term will
        continue to be valid and enforceable to the fullest extent permitted by
        law.

                                    SECTION 9
                                   AMENDMENTS

        At any time before the Effective Date, whether before or after the
parties have obtained any applicable shareholder approvals of this Agreement,
the boards of directors of Glacier and WesterFed may: (1) amend or modify this
Agreement or any attached Exhibit or Schedule and (2) grant waivers or time
extensions in accordance with Section 8.2. But, after WesterFed's shareholders
have adopted this Agreement, the parties' boards of directors may not without
WesterFed shareholder approval amend or waive any provision of this Agreement if
the amendment or waiver would reduce the amount or change the form of
consideration WesterFed shareholders will receive in the Transaction. All
amendments, modifications, extensions and waivers must be in writing and signed
by the party agreeing to the amendment, modification, extension or waiver.
Failure by any party to insist on strict compliance by the other party with any
of its obligations, agreements or conditions under this Agreement, does not,
without a writing, operate as a waiver or estoppel with respect to that or any
other obligation, agreement, or condition.

[SIGNATURES APPEAR ON THE FOLLOWING PAGE]


                                      A-52
<PAGE>   151

Signed as of September 20, 2000:

                                   GLACIER BANCORP, INC.

                                   By   /s/ Michael J. Blodnick
                                        ----------------------------------------
                                   Name:   Michael J. Blodnick
                                   Title: President and Chief Executive Officer

                                   WESTERFED FINANCIAL CORPORATION

                                   By   /s/ Ralph K. Holliday
                                        ----------------------------------------
                                   Name:    Ralph K. Holliday
                                   Title:  President and Chief Executive Officer


                                      A-53
<PAGE>   152

STATE OF MONTANA   )
                   ) ss.
COUNTY OF FLATHEAD )

        On this 20th day September 2000, before me personally appeared Michael
J. Blodnick, to me known to be the President and Chief Executive Officer of
GLACIER BANCORP, INC., the corporation that executed the foregoing instrument,
who acknowledged said instrument to be the free and voluntary act and deed of
said corporation, for the uses and purposes mentioned there, and who stated on
oath that he was authorized to execute said instrument, and that the seal
affixed (if any) was the official seal of said corporation. IN WITNESS OF THE
FOREGOING, I have set my hand and official seal to this document as of the day
and year first written above

                              /S/
                              --------------------------------------------------
                              NOTARY PUBLIC in and for the State of
                              _____________, residing at _____________________.
                              Title:__________________________________________.
                              My commission expires: _________________________.



STATE OF MONTANA   )
                   ) ss.
COUNTY OF MISSOULA )

        On this 20th day of September 2000, before me personally appeared Ralph
K. Holliday, to me known to be the President and Chief Executive Officer of
WESTERFED FINANCIAL CORPORATION, the corporation that executed the foregoing
instrument, who acknowledged said instrument to be the free and voluntary act
and deed of said corporation, for the uses and purposes mentioned there, and who
stated on oath that he was authorized to execute said instrument, and that the
seal affixed (if any) was the official seal of said corporation. IN WITNESS OF
THE FOREGOING, I have set my hand and official seal to this document as of the
day and year first written above.

                              /S/
                              --------------------------------------------------
                              NOTARY PUBLIC in and for the State of
                              _____________, residing at _____________________.
                              Title:__________________________________________.
                              My commission expires: _________________________.



                                      A-54
<PAGE>   153

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                             PAGE
<S>     <C>                                                                                  <C>
SECTION 1 TERMS OF TRANSACTION..............................................................  4
        1.1    Transaction..................................................................  4
        1.2    Effect of Transaction........................................................  4
        1.3    Consideration................................................................  4
        1.4    Price........................................................................  5
               1.4.1  Definitions...........................................................  5
               1.4.2  Merger Consideration..................................................  6
        1.5    Effect on Glacier Common Stock...............................................  6
        1.6    Conversion Election Procedures and Allocation................................  6
               1.6.1  Election Options...........................ERROR! BOOKMARK NOT DEFINED
               1.6.2  Effective Election....................................................  6
               1.6.3  Non-election; Discretion of Exchange Agent............................  7
               1.6.4  Maximum Stock and Cash Conversion Amounts.............................  7
               1.6.5  Allocation............................................................  8
        1.7    Conversion of WesterFed Options..............................................  9
        1.8    Shareholder Rights; Stock Transfers..........................................  9
        1.9    Fractional Shares............................................................ 10
        1.10   Payment to Dissenting Shareholders........................................... 10
        1.11   Exchange Procedures.......................................................... 10
               1.11.1 Surrender of Certificate.............................................. 10
               1.11.2 Issuance of Merger Consideration in Other Names....................... 10
               1.11.3 Lost, Stolen, and Destroyed Certificates.............................. 10
               1.11.4 Rights to Dividends and Distributions................................. 11
               1.11.5 Delivery of Merger Consideration to Exchange Agent.................... 11
               1.11.6 Affiliates' Certificates.............................................. 11
        1.12   Merger Consideration Adjustments............................................. 11
        1.13   Exception Shares............................................................. 11
        1.14   Reservation Of Right To Revise Structure..................................... 12
        1.15   Stock Option Agreement....................................................... 12

SECTION 2 CLOSING OF THE TRANSACTION........................................................ 12

        2.1    Closing...................................................................... 12
        2.2    Events of Closing............................................................ 12
        2.3    Place of Closing............................................................. 12

SECTION 3 REPRESENTATIONS................................................................... 13

        3.1    Representations of Glacier and WesterFed..................................... 13
               3.1.1  Corporate Organization and Qualification.............................. 13
               3.1.2  Subsidiaries.......................................................... 13
               3.1.3  Capital Stock......................................................... 14
               3.1.4  Corporate Authority................................................... 16
               3.1.5  Reports and Financial Statements...................................... 16
               3.1.6  Absence of Certain Events and Changes................................. 18
</TABLE>

                                       i

<PAGE>   154

<TABLE>
<CAPTION>
<S>     <C>                                                                                  <C>
               3.1.7  Material Agreements................................................... 19
               3.1.8  Knowledge as to Conditions............................................ 19
               3.1.9  Brokers and Finders................................................... 19
               3.1.10 Corporate Records..................................................... 19
               3.1.11 Loan and Lease Losses................................................. 19
               3.1.12 No Stock Option Plans................................................. 20
               3.1.13 Governmental Filings; No Violations................................... 20
               3.1.14 Asset Classification.................................................. 20
               3.1.15 Investments........................................................... 21
               3.1.16 Properties............................................................ 21
               3.1.17 Anti-takeover Provisions.............................................. 22
               3.1.18 Compliance with Laws.................................................. 22
               3.1.19 Litigation............................................................ 22
               3.1.20 Taxes................................................................. 23
               3.1.21 Insurance............................................................. 24
               3.1.22 Labor Matters......................................................... 24
               3.1.23 Employee Benefits..................................................... 25
               3.1.24 Environmental Matters................................................. 27
        3.2    Exceptions to Representations................................................ 29
               3.2.1  Disclosure of Exceptions.............................................. 29
               3.2.2  Nature of Exceptions.................................................. 29
               3.2.3  Material Adverse Effect............................................... 29

SECTION 4 CONDUCT AND TRANSACTIONS BEFORE CLOSING........................................... 30

        4.1    Conduct of WesterFed's Business Before Closing............................... 30
               4.1.1  Availability of WesterFed's Books, Records and Properties............. 30
               4.1.2  Ordinary and Usual Course............................................. 30
               4.1.3  Conduct Regarding Representations..................................... 32
               4.1.4  Maintenance of Properties............................................. 32
               4.1.5  Preservation of Business Organization................................. 32
               4.1.6  Senior Management..................................................... 33
               4.1.7  Compensation and Employment Agreements................................ 33
               4.1.8  Update of Financial Statements........................................ 33
               4.1.9  No Solicitation....................................................... 33
        4.2    Conduct of Glacier's Business Before Closing................................. 34
               4.2.1  Availability of Glacier's Books, Records and Properties............... 34
               4.2.2  Certain Prohibited Activities......................................... 34
               4.2.3  Conduct Regarding Representations..................................... 35
               4.2.4  Maintenance of Properties............................................. 35
               4.2.5  Preservation of Business Organization................................. 35
               4.2.6  Update of Financial Statements........................................ 35
        4.3    Registration Statement....................................................... 36
               4.3.1  Preparation of Registration Statement................................. 36
               4.3.2  Submission to Shareholders............................................ 36
        4.4    Affiliate List............................................................... 37
        4.5    Submission to Regulatory Authorities......................................... 37
        4.6    Announcements................................................................ 37
        4.7    Consents..................................................................... 37
</TABLE>

                                       ii
<PAGE>   155

<TABLE>
<CAPTION>
<S>     <C>                                                                                  <C>
        4.8    Further Actions.............................................................. 37
        4.9    Notice....................................................................... 37
        4.10   Confidentiality.............................................................. 38
        4.11   NASDAQ Listing............................................................... 38
        4.12   Registration of Assumed Option Shares........................................ 38
        4.13   Certain Policies............................................................. 38

SECTION 5 APPROVALS AND CONDITIONS.......................................................... 38

        5.1    Required Approvals........................................................... 38
        5.2    Conditions to Glacier's Obligations.......................................... 38
               5.2.1  Representations....................................................... 38
               5.2.2  Compliance............................................................ 39
               5.2.3  No Material Adverse Effect............................................ 39
               5.2.4  No Governmental Proceedings........................................... 39
               5.2.5  Action................................................................ 39
               5.2.6  Tax Opinion........................................................... 39
               5.2.7  Registration Statement................................................ 39
               5.2.8  Consents.............................................................. 39
               5.2.9  Solicitation of Employees............................................. 39
               5.2.10 Director Appointment.................................................. 39
               5.2.11 Other Matters......................................................... 40
               5.2.12 Fairness Opinions..................................................... 40
        5.3    Conditions to WesterFed's Obligations........................................ 40
               5.3.1  Representations....................................................... 40
               5.3.2  Compliance............................................................ 40
               5.3.3  No Material Adverse Effect............................................ 40
               5.3.4  No Governmental Proceedings........................................... 41
               5.3.5  Shareholder Action.................................................... 41
               5.3.6  Tax Opinion........................................................... 41
               5.3.7  Registration Statement................................................ 41
               5.3.8  Director Appointment.................................................. 41
               5.3.9  NASDAQ Listing........................................................ 41
               5.3.10 Fairness Opinion...................................................... 41

SECTION 6 DIRECTORS, OFFICERS AND EMPLOYEES................................................. 42

        6.1    Directors.................................................................... 42
        6.2    Employment Agreements........................................................ 42
        6.3    Employees.................................................................... 42
        6.4    Indemnification; Director and Officer Insurance.............................. 43
        6.5    Employee Benefit Issues...................................................... 44
               6.5.1  Employee Stock Ownership Plan......................................... 44
               6.5.2  FIRF Plan............................................................. 45
               6.5.3  Termination and Transfer/Merger of Plans.............................. 45
               6.5.4  No Contract Created................................................... 45
</TABLE>

                                      iii


<PAGE>   156

<TABLE>
<CAPTION>
<S>     <C>                                                                                  <C>
SECTION 7 TERMINATION OF AGREEMENT AND ABANDONMENT OF TRANSACTION........................... 46

        7.1    Termination by Reason of Lapse of Time....................................... 46
        7.2    Other Grounds for Termination................................................ 46
               7.2.1  Mutual Consent........................................................ 46
               7.2.2  WesterFed's Conditions Not Met........................................ 46
               7.2.3  Glacier's Conditions Not Met.......................................... 46
               7.2.4  WesterFed Fails to Recommend Shareholder Approval..................... 46
               7.2.5  Glacier Fails to Recommend Shareholder Approval....................... 46
               7.2.6  Impracticability...................................................... 47
               7.2.7  Average Closing Price Less Than $9.00................................. 47
               7.2.8  Average Closing Price Less Than $7.50................................. 47
        7.3    Glacier Liquidated Damages................................................... 48
               7.3.1  Payment of Liquidated Damages......................................... 48
               7.3.2  Limitation on Payment of Liquidated Damages........................... 48
               7.3.3  Definitions........................................................... 48
        7.4    WesterFed Liquidated Damages................................................. 49
               7.4.1  Payment of Liquidated Damages......................................... 49
               7.4.2  Limitation on Payment of Liquidated Damages........................... 49
        7.5    Cost Allocation Upon Termination............................................. 49

SECTION 8 MISCELLANEOUS..................................................................... 50

        8.1    Notices...................................................................... 50
        8.2    Waivers and Extensions....................................................... 50
        8.3    General Interpretation....................................................... 51
        8.4    Construction and Execution in Counterparts................................... 51
        8.5    Survival of Representations and Covenants.................................... 51
        8.6    Attorneys' Fees and Costs.................................................... 51
        8.7    Arbitration and Specific Performance......................................... 51
        8.8    Governing Law and Venue...................................................... 52
        8.9    Severability................................................................. 52

SECTION 9 AMENDMENTS........................................................................ 52

</TABLE>

                                       iv

<PAGE>   157

EXHIBITS:

EXHIBIT A             Voting Agreement
EXHIBIT B             Non-Competition Agreement
EXHIBIT C             Stock Option Agreement
EXHIBIT D             Form of Affiliate Letter
EXHIBIT E             Form of Opinion for Silver, Freedman & Taff, L.L.P.
EXHIBIT F             Form of Opinion for Graham & Dunn, P.C.


SCHEDULES:
Glacier Schedules
SCHEDULE 3.1-G.              Glacier General Exceptions
SCHEDULE 3.1.2(a)-G          Glacier Subsidiaries
SCHEDULE 3.1.3(a)(2)-G       Glacier Stock Plans
SCHEDULE 3.1.7(a)-G          Glacier Material Contracts
SCHEDULE 3.1.13(b)-G         Glacier Required Third Party Consents
SCHEDULE 3.1.14(a)-G         Glacier Asset Classification List
SCHEDULE 3.1.15-G            Glacier Investments
SCHEDULE 3.1.16(a)-G         Glacier Banking Offices
SCHEDULE 3.1.16(b)-G         Glacier Liens
SCHEDULE 3.1.16(d)-G         Glacier Offices and Branches
SCHEDULE 3.1.18-G            Glacier Compliance with Law
SCHEDULE 3.1.19-G            Glacier Litigation
SCHEDULE 3.1.21-G            Glacier Insurance Policies
SCHEDULE 3.1.23(b)-G         Glacier Employee Benefit Plans

WesterFed Schedules
SCHEDULE 3.1-W.              WesterFed General Exceptions
SCHEDULE 3.1.2(a)-W          WesterFed Subsidiaries
SCHEDULE 3.1.3(b)(2)-W       WesterFed Stock Plans
SCHEDULE 3.1.7(a)-W          WesterFed Material Contracts
SCHEDULE 3.1.13(b)-W         WesterFed Required Third Party Consents
SCHEDULE 3.1.14(a)-W         WesterFed Asset Classification List
SCHEDULE 3.1.15-W            WesterFed Investments
SCHEDULE 3.1.16(a)-W         WesterFed Banking Offices
SCHEDULE 3.1.16(b)-W         WesterFed Liens
SCHEDULE 3.1.16(d)-W         WesterFed Offices and Branches
SCHEDULE 3.1.18-W            WesterFed Compliance with Law
SCHEDULE 3.1.19-W            WesterFed Litigation
SCHEDULE 3.1.21-W            WesterFed Insurance Policies
SCHEDULE 3.1.23(b)-W         WesterFed Employee Benefit Plans


EXHIBITS AND SCHEDULES NOT INCLUDED FOR FILING PURPOSES. COPIES OF THESE
DOCUMENTS CAN BE SUPPLIED UPON REQUEST BY THE SECURITIES AND EXCHANGE COMMISSION

                                       v
<PAGE>   158
                                                                      APPENDIX B

                               "APPRAISAL RIGHTS"

SECTION 262. APPRAISAL RIGHTS.

(a) Any stockholder of a corporation of this State who holds shares of stock on
the date of the making of a demand pursuant to subsection (d) of this section
with respect to such shares, who continuously holds such shares through the
effective date of the merger or consolidation, who has otherwise complied with
subsection (d) of this section and who has neither voted in favor of the merger
or consolidation nor consented thereto in writing pursuant to Section 228 of
this title shall be entitled to an appraisal by the Court of Chancery of the
fair value of the stockholder's shares of stock under the circumstances
described in subsections (b) and (c) of this section. As used in this section,
the word "stockholder" means a holder of record of stock in a stock corporation
and also a member of record of a nonstock corporation; the words "stock" and
"share" mean and include what is ordinarily meant by those words and also
membership or membership interest of a member of a nonstock corporation; and the
words "depository receipt" mean a receipt or other instrument issued by a
depository representing an interest in one or more shares, or fractions thereof,
solely of stock of a corporation, which stock is deposited with the depository.

(b) Appraisal rights shall be available for the shares of any class or series of
stock of a constituent corporation in a merger or consolidation to be effected
pursuant to Section 251 (other than a merger effected pursuant to Section 251(g)
of this title), Section 252, Section 254, Section 257, Section 258, Section 263
or Section 264 of this title:

        (1) Provided, however, that no appraisal rights under this section shall
            be available for the shares of any class or series of stock, which
            stock, or depository receipts in respect thereof, at the record date
            fixed to determine the stockholders entitled to receive notice of
            and to vote at the meeting of stockholders to act upon the agreement
            of merger or consolidation, were either (i) listed on a national
            securities exchange or designated as a national market system
            security on an interdealer quotation system by the National
            Association of Securities Dealers, Inc. or (ii) held of record by
            more than 2,000 holders; and further provided that no appraisal
            rights shall be available for any shares of stock of the constituent
            corporation surviving a merger if the merger did not require for its
            approval the vote of the stockholders of the surviving corporation
            as provided in subsection (f) of Section 251 of this title.

        (2) Notwithstanding paragraph (1) of this subsection, appraisal rights
            under this section shall be available for the shares of any class or
            series of stock of a constituent corporation if the holders thereof
            are required by the terms of an agreement of merger or consolidation
            pursuant to Sections 251, 252, 254, 257, 258, 263 and 264 of this
            title to accept for such stock anything except:

               a. Shares of stock of the corporation surviving or resulting from
            such merger or consolidation, or depository receipts in respect
            thereof;

               b. Shares of stock of any other corporation, or depository
            receipts in respect thereof, which shares of stock (or depository
            receipts in respect thereof) or depository receipts at the effective
            date of the merger or consolidation will be either listed on a
            national securities exchange or designated as a national market
            system security on an interdealer quotation system by the National
            Association of Securities Dealers, Inc. or held of record by more
            than 2,000 holders;

               c. Cash in lieu of fractional shares or fractional depository
            receipts described in the foregoing subparagraphs a. and b. of this
            paragraph; or

               d. Any combination of the shares of stock, depository receipts
            and cash in lieu of


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            fractional shares or fractional depository receipts described in the
            foregoing subparagraphs a., b. and c. of this paragraph.

        (3) In the event all of the stock of a subsidiary Delaware corporation
            party to a merger effected under Section 253 of this title is not
            owned by the parent corporation immediately prior to the merger,
            appraisal rights shall be available for the shares of the subsidiary
            Delaware corporation.

        (4) (c) Any corporation may provide in its certificate of incorporation
            that appraisal rights under this section shall be available for the
            shares of any class or series of its stock as a result of an
            amendment to its certificate of incorporation, any merger or
            consolidation in which the corporation is a constituent corporation
            or the sale of all or substantially all of the assets of the
            corporation. If the certificate of incorporation contains such a
            provision, the procedures of this section, including those set forth
            in subsections (d) and (e) of this section, shall apply as nearly as
            is practicable.

(d)     Appraisal rights shall be perfected as follows:

        (1) If a proposed merger or consolidation for which appraisal rights are
            provided under this section is to be submitted for approval at a
            meeting of stockholders, the corporation, not less than 20 days
            prior to the meeting, shall notify each of its stockholders who was
            such on the record date for such meeting with respect to shares for
            which appraisal rights are available pursuant to subsection (b) or
            (c) hereof that appraisal rights are available for any or all of the
            shares of the constituent corporations, and shall include in such
            notice a copy of this section. Each stockholder electing to demand
            the appraisal of such stockholder's shares shall deliver to the
            corporation, before the taking of the vote on the merger or
            consolidation, a written demand for appraisal of such stockholder's
            shares. Such demand will be sufficient if it reasonably informs the
            corporation of the identity of the stockholder and that the
            stockholder intends thereby to demand the appraisal of such
            stockholder's shares. A proxy or vote against the merger or
            consolidation shall not constitute such a demand. A stockholder
            electing to take such action must do so by a separate written demand
            as herein provided. Within 10 days after the effective date of such
            merger or consolidation, the surviving or resulting corporation
            shall notify each stockholder of each constituent corporation who
            has complied with this subsection and has not voted in favor of or
            consented to the merger or consolidation of the date that the merger
            or consolidation has become effective; or

        (2) If the merger or consolidation was approved pursuant to Section 228
            or Section 253 of this title, each constituent corporation, either
            before the effective date of the merger or consolidation or within
            ten days thereafter, shall notify each of the holders of any class
            or series of stock of such constituent corporation who are entitled
            to appraisal rights of the approval of the merger or consolidation
            and that appraisal rights are available for any or all shares of
            such class or series of stock of such constituent corporation, and
            shall include in such notice a copy of this section; provided that,
            if the notice is given on or after the effective date of the merger
            or consolidation, such notice shall be given by the surviving or
            resulting corporation to all such holders of any class or series of
            stock of a constituent corporation that are entitled to appraisal
            rights. Such notice may, and, if given on or after the effective
            date of the merger or consolidation, shall, also notify such
            stockholders of the effective date of the merger or consolidation.
            Any stockholder entitled to appraisal rights may, within 20 days
            after the date of mailing of such notice, demand in writing from the
            surviving or resulting corporation the appraisal of such holder's
            shares. Such demand will be sufficient if it reasonably informs the
            corporation of the identity of the stockholder and that the
            stockholder intends thereby to demand the appraisal of such holder's
            shares. If such notice did not notify stockholders of the


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            effective date of the merger or consolidation, either (i) each such
            constituent corporation shall send a second notice before the
            effective date of the merger or consolidation notifying each of the
            holders of any class or series of stock of such constituent
            corporation that are entitled to appraisal rights of the effective
            date of the merger or consolidation or (ii) the surviving or
            resulting corporation shall send such a second notice to all such
            holders on or within 10 days after such effective date; provided,
            however, that if such second notice is sent more than 20 days
            following the sending of the first notice, such second notice need
            only be sent to each stockholder who is entitled to appraisal rights
            and who has demanded appraisal of such holder's shares in accordance
            with this subsection. An affidavit of the secretary or assistant
            secretary or of the transfer agent of the corporation that is
            required to give either notice that such notice has been given
            shall, in the absence of fraud, be prima facie evidence of the facts
            stated therein. For purposes of determining the stockholders
            entitled to receive either notice, each constituent corporation may
            fix, in advance, a record date that shall be not more than 10 days
            prior to the date the notice is given, provided, that if the notice
            is given on or after the effective date of the merger or
            consolidation, the record date shall be such effective date. If no
            record date is fixed and the notice is given prior to the effective
            date, the record date shall be the close of business on the day next
            preceding the day on which the notice is given.

(e) Within 120 days after the effective date of the merger or consolidation, the
surviving or resulting corporation or any stockholder who has complied with
subsections (a) and (d) hereof and who is otherwise entitled to appraisal
rights, may file a petition in the Court of Chancery demanding a determination
of the value of the stock of all such stockholders. Notwithstanding the
foregoing, at any time within 60 days after the effective date of the merger or
consolidation, any stockholder shall have the right to withdraw such
stockholder's demand for appraisal and to accept the terms offered upon the
merger or consolidation. Within 120 days after the effective date of the merger
or consolidation, any stockholder who has complied with the requirements of
subsections (a) and (d) hereof, upon written request, shall be entitled to
receive from the corporation surviving the merger or resulting from the
consolidation a statement setting forth the aggregate number of shares not voted
in favor of the merger or consolidation and with respect to which demands for
appraisal have been received and the aggregate number of holders of such shares.
Such written statement shall be mailed to the stockholder within 10 days after
such stockholder's written request for such a statement is received by the
surviving or resulting corporation or within 10 days after expiration of the
period for delivery of demands for appraisal under subsection (d) hereof,
whichever is later.

(f) Upon the filing of any such petition by a stockholder, service of a copy
thereof shall be made upon the surviving or resulting corporation, which shall
within 20 days after such service file in the office of the Register in Chancery
in which the petition was filed a duly verified list containing the names and
addresses of all stockholders who have demanded payment for their shares and
with whom agreements as to the value of their shares have not been reached by
the surviving or resulting corporation. If the petition shall be filed by the
surviving or resulting corporation, the petition shall be accompanied by such a
duly verified list. The Register in Chancery, if so ordered by the Court, shall
give notice of the time and place fixed for the hearing of such petition by
registered or certified mail to the surviving or resulting corporation and to
the stockholders shown on the list at the addresses therein stated. Such notice
shall also be given by 1 or more publications at least 1 week before the day of
the hearing, in a newspaper of general circulation published in the City of
Wilmington, Delaware or such publication as the Court deems advisable. The forms
of the notices by mail and by publication shall be approved by the Court, and
the costs thereof shall be borne by the surviving or resulting corporation.

(g) At the hearing on such petition, the Court shall determine the stockholders
who have complied with this section and who have become entitled to appraisal
rights. The Court may require the stockholders who have demanded an appraisal
for their shares and who hold stock represented by



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certificates to submit their certificates of stock to the Register in Chancery
for notation thereon of the pendency of the appraisal proceedings; and if any
stockholder fails to comply with such direction, the Court may dismiss the
proceedings as to such stockholder.

(h) After determining the stockholders entitled to an appraisal, the Court shall
appraise the shares, determining their fair value exclusive of any element of
value arising from the accomplishment or expectation of the merger or
consolidation, together with a fair rate of interest, if any, to be paid upon
the amount determined to be the fair value. In determining such fair value, the
Court shall take into account all relevant factors. In determining the fair rate
of interest, the Court may consider all relevant factors, including the rate of
interest which the surviving or resulting corporation would have had to pay to
borrow money during the pendency of the proceeding. Upon application by the
surviving or resulting corporation or by any stockholder entitled to participate
in the appraisal proceeding, the Court may, in its discretion, permit discovery
or other pretrial proceedings and may proceed to trial upon the appraisal prior
to the final determination of the stockholder entitled to an appraisal. Any
stockholder whose name appears on the list filed by the surviving or resulting
corporation pursuant to subsection (f) of this section and who has submitted
such stockholder's certificates of stock to the Register in Chancery, if such is
required, may participate fully in all proceedings until it is finally
determined that such stockholder is not entitled to appraisal rights under this
section.

(i) The Court shall direct the payment of the fair value of the shares, together
with interest, if any, by the surviving or resulting corporation to the
stockholders entitled thereto. Interest may be simple or compound, as the Court
may direct. Payment shall be so made to each such stockholder, in the case of
holders of uncertificated stock forthwith, and the case of holders of shares
represented by certificates upon the surrender to the corporation of the
certificates representing such stock. The Court's decree may be enforced as
other decrees in the Court of Chancery may be enforced, whether such surviving
or resulting corporation be a corporation of this State or of any state.

(j) The costs of the proceeding may be determined by the Court and taxed upon
the parties as the Court deems equitable in the circumstances. Upon application
of a stockholder, the Court may order all or a portion of the expenses incurred
by any stockholder in connection with the appraisal proceeding, including,
without limitation, reasonable attorney's fees and the fees and expenses of
experts, to be charged pro rata against the value of all the shares entitled to
an appraisal.

(k) From and after the effective date of the merger or consolidation, no
stockholder who has demanded appraisal rights as provided in subsection (d) of
this section shall be entitled to vote such stock for any purpose or to receive
payment of dividends or other distributions on the stock (except dividends or
other distributions payable to stockholders of record at a date which is prior
to the effective date of the merger or consolidation); provided, however, that
if no petition for an appraisal shall be filed within the time provided in
subsection (e) of this section, or if such stockholder shall deliver to the
surviving or resulting corporation a written withdrawal of such stockholder's
demand for an appraisal and an acceptance of the merger or consolidation, either
within 60 days after the effective date of the merger or consolidation as
provided in subsection (e) of this section or thereafter with the written
approval of the corporation, then the right of such stockholder to an appraisal
shall cease. Notwithstanding the foregoing, no appraisal proceeding in the Court
of Chancery shall be dismissed as to any stockholder without the approval of the
Court, and such approval may be conditioned upon such terms as the Court deems
just.

(l) The shares of the surviving or resulting corporation to which the shares of
such objecting stockholders would have been converted had they assented to the
merger or consolidation shall have the status of authorized and unissued shares
of the surviving or resulting corporation.

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                                                                      APPENDIX C

                             STOCK OPTION AGREEMENT

        STOCK OPTION AGREEMENT ("Option Agreement"), dated as of September 20,
2000, between Glacier Bancorp, Inc., a Delaware corporation ("Grantee"), and
WesterFed Financial Corporation, Inc., a Delaware corporation ("Issuer").

                                    RECITALS

        A. Grantee and Issuer have entered into a Plan and Agreement of Merger
(the "Merger Agreement") on even date herewith;

        B. As an inducement to Grantee to enter into the Merger Agreement,
Issuer has agreed to grant Grantee the Option (as hereinafter defined);

        C. The Board of Directors of Issuer has approved this Option Agreement,
the grant of the Option and the Merger Agreement.

                                    AGREEMENT

        In consideration of the mutual promises set forth below and in the
Merger Agreement, the parties agree as follows:

                                    SECTION 1

                                     OPTION

        1.1 Option Grant. Issuer hereby grants to Grantee an unconditional,
irrevocable option (the "Option") to purchase, subject to the terms in this
Agreement, up to an aggregate of 809,835 shares of the fully paid and
nonassessable shares of the common stock, par value $0.01 per share, of Issuer
("Common Stock") representing 19.9% of the outstanding stock of the Issuer
without giving effect to shares subject to or to be issued pursuant to this
Option Agreement, at a price per share (the "Option Price") equal to the average
of last reported sale prices per share of Common Stock as reported on the NASDAQ
National Market on September 18 and September 19, 2000.

        1.2 Adjustment of Exercise Price. If Issuer issues or agrees to issue
any shares of Common Stock (other than shares of Common Stock issued pursuant to
stock options granted pursuant to any employee benefit plan prior to the date
hereof) at a price less than such average price per share (as adjusted pursuant
to subsection 5.2), the Option price will be equal to such lesser price (in
which case such price, as adjusted, will be the Option Price).

        1.3 Shares Subject to the Option.

            1.3.1 In no event will the number of shares for which this Option is
exercisable exceed 19.9% of the issued and outstanding shares of Common Stock
immediately prior to such exercise without giving effect to any shares subject
or issued pursuant to the Option. The


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number of shares of Common Stock that may be received upon the exercise of the
Option and the Option Price are subject to adjustment under this Option
Agreement.

            1.3.2 If any additional shares of Common Stock are issued or
otherwise become outstanding after the date of this Option Agreement (other than
pursuant to (i) this Option Agreement or (ii) an event described in Section 5
hereof), the number of shares of Common Stock subject to the Option will be
increased so that, after such issuance, such number together with any shares of
Common Stock previously issued pursuant hereto, equals 19.9% of the number of
shares of Common Stock then issued and outstanding without giving effect to any
shares subject or issued pursuant to the Option. Nothing contained in this
Section l.3 or elsewhere in this Option Agreement will be deemed to authorize
Issuer to issue shares in breach of any provision of the Merger Agreement.

                                    SECTION 2
                                TRIGGERING EVENTS

        2.1 Definitions. For purposes of this Option Agreement, the following
terms will have the meanings set forth below:

            (a) "Acquisition Transaction" means (i) a merger or consolidation,
or any similar transaction, involving Issuer or any Issuer Subsidiary (defined
below), (ii) a purchase, lease or other acquisition of all or any substantial
part of the assets or deposits of Issuer or any Issuer Subsidiary, or (iii) a
purchase or other acquisition (including by way of merger, consolidation, share
exchange or otherwise) of securities representing 10% or more of the voting
power of Issuer or any Issuer Subsidiary. Notwithstanding clause (i) above, the
term "Acquisition Transaction" does not include any mergers, consolidations or
similar transactions entered into without violating any of the terms of the
Merger Agreement and (x) involving solely Issuer and/or one or more wholly-owned
(except for directors' qualifying shares and a de minimis number of other
shares) Subsidiaries of the Issuer, or (y) in which the stockholders of Issuer
immediately prior to the completion of such transaction own at least 80% of the
Common Stock of the Issuer (or the resulting or surviving entity in such
transaction) immediately after completion of such transaction.

            (b) "Holder" means any holder or holders of the Option.

            (c) "Initial Triggering Event" means any of the following events or
transactions occurring on or after the date hereof:

                (i) Issuer or any Significant Subsidiary (an "Issuer
Subsidiary"), without having received Grantee's prior written consent, enters
into an agreement to engage in an Acquisition Transaction with any person other
than Grantee or any of its Subsidiaries (each a "Grantee Subsidiary") or the
Board of Directors of Issuer (the "Issuer Board") recommends that the
stockholders of Issuer approve or accept any Acquisition Transaction other than
the Merger.

                (ii) Any person other than the Grantee or any Grantee Subsidiary
acquires beneficial ownership or the right to acquire beneficial ownership of
10% or more of the outstanding shares of Common Stock (the term "beneficial
ownership" for purposes of this


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Agreement having the meaning assigned thereto in Section 13(d) of the 1934 Act,
and the rules and regulations thereunder);

                (iii) The stockholders of Issuer vote and fail to adopt the
Merger Agreement at a meeting which has been held for that purpose or any
adjournment or postponement thereof, or such meeting is not held or is cancelled
prior to termination of the Merger Agreement if, prior to such meeting (or if
such meeting is not held or is cancelled, prior to such termination), it is
publicly announced that any person (other than Grantee or any of its
Subsidiaries) has made, or publicly disclosed an intention to make, a proposal
to engage in an Acquisition Transaction;

                (iv) (x) The Issuer Board withdraws or modifies (or publicly
announces its intention to withdraw or modify) in any manner adverse in any
respect to Grantee its recommendation that the stockholders of Issuer approve
the transactions contemplated by the Merger Agreement, (y) Issuer or any Issuer
Subsidiary, without having received Grantee's prior written consent, authorizes,
recommends, proposes (or publicly announces its intention to authorize,
recommend or propose) an agreement to engage in an Acquisition Transaction with
any person other than Grantee or a Grantee Subsidiary, or (z) Issuer provides
information to or engages in negotiations or discussions with a third party
relating to a possible Acquisition Transaction.

                (v) Any person other than Grantee or any Grantee Subsidiary has
made a proposal to Issuer or its stockholders to engage in an Acquisition
Transaction and such proposal has been publicly announced;

                (vi) Any person other than Grantee or any Grantee Subsidiary has
filed with the SEC a registration statement or tender offer materials with
respect to a potential exchange or tender offer that would constitute an
Acquisition Transaction (or filed a preliminary proxy statement with the SEC
with respect to a potential vote by its stockholders to approve the issuance of
shares to be offered in such an exchange offer);

                (vii) Issuer willfully breaches any covenant or obligation
contained in the Merger Agreement in anticipation of engaging in an Acquisition
Transaction, and following such breach Grantee is entitled to terminate the
Merger Agreement (whether immediately or after the giving of notice or passage
of time or both); or

                (viii) Any person other than Grantee or any Grantee Subsidiary
(other than in connection with a transaction to which Grantee has given its
prior written consent) has filed an application or notice with the Board of
Governors of the Federal Reserve System (the "Federal Reserve Board") or other
federal or state bank or thrift regulatory or antitrust authority, and the
application or notice has been accepted for processing, for approval to engage
in an Acquisition Transaction.

            (d) "Person" has the meaning assigned thereto in Sections 3(a)(9)
and 13(d)(3) of the Securities Exchange Act of 1934, as amended (the "1934
Act"), and the rules and regulations thereunder.


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<PAGE>   165

            (e) "Significant Subsidiary" has the meaning assigned thereto in
Rule 1-02 of Regulation S-X promulgated by the Securities and Exchange
Commission (the "SEC").

            (f) "Subsequent Triggering Event" means any of the following events
or transactions occurring after the date hereof:

                (i) The acquisition by any person (other than Grantee or any
Grantee Subsidiary) of beneficial ownership of 25% or more of the then
outstanding Common Stock; or

                (ii) The occurrence of the Initial Triggering Event described in
clause 2.1(c)(i) except that if the Triggering Event is based upon an
Acquisition Transaction described in clause 2.1(a)(iii), then the percentage
referred to in clause 2.1(a)(iii) will be 25%.

            (g) "Exercise Termination Event" means any of (i) the Effective Date
of the Merger; (ii) termination of the Merger Agreement before an Initial
Triggering Event except a termination by Grantee pursuant to subsection 7.2.2
(solely on the account of a willful breach by Issuer) or subsection 7.2.4 of the
Merger Agreement (each, a "Listed Termination"); (iii) the passage of fifteen
(15) months (or such longer period as provided in Section 10) after termination
of the Merger Agreement if such termination follows an Initial Triggering Event
or a Listed Termination, (iv) the date on which the stockholders of the Grantee
have voted and failed to adopt the Merger Agreement (unless (A) Issuer is then
in material breach of its covenants or agreements contained in the Merger
Agreement or (B) on or prior to such date, the stockholders of Issuer have also
voted and failed to approve and adopt the Merger Agreement), or (v) upon a
termination of this Option Agreement as provided in subsection 2.2.2.

        2.2 Exercise of Option.

            2.2.1 Triggering Events. The Holder may exercise the Option, in
whole or part, if, but only if, both an Initial Triggering Event and a
Subsequent Triggering Event have occurred before an Exercise Termination Event,
provided that the Holder must have sent the written notice of such exercise (as
provided in clause 2.2.3) within six (6) months following such Subsequent
Triggering Event (or such later period as provided in Section 10).

            2.2.2 Limitations on Exercise. Notwithstanding anything to the
contrary (a) the Option may not be exercised at any time when Grantee is in
willful breach of the Merger Agreement giving Issuer the right to terminate
pursuant to subsection 7.2.3 of the Merger Agreement or at any time when Issuer
has a right to terminate the Merger Agreement pursuant to subsection 7.2.5, and
(b) this Option Agreement will automatically terminate upon (i) the proper
termination of the Merger Agreement by Issuer pursuant to subsection 7.2.3
thereof as a result of the willful breach by Grantee of the Merger Agreement, by
Issuer pursuant to subsection 7.2.5 of the Merger Agreement or by Issuer or
Grantee pursuant to subsection 7.2.1 of the Merger Agreement, or (ii) the
acceptance by the Grantee of the $4.5 million liquidated damages from Issuer
pursuant to subsection 7.4.1 of the Merger Agreement.

            2.2.3 Notice of Triggering Event. Issuer will notify Grantee
promptly in writing of the occurrence of any Initial Triggering Event or
Subsequent Triggering Event (together, a "Triggering Event"), it being
understood that the giving of such notice by Issuer is not a condition to the
right of the Holder to exercise the Option.


                                      C-4
<PAGE>   166

            2.2.4 Notice of Exercise. If Holder is entitled to and wishes to
exercise the Option (or any portion thereof), it will send to Issuer a written
notice (the date of which is the "Notice Date") specifying (i) the total number
of shares it will purchase pursuant to such exercise and (ii) a place and date
not earlier than three business days nor later than 60 business days from the
Notice Date for the closing of such purchase (the "Closing Date"); provided,
that if prior notification to or approval of the Federal Reserve Board or any
other regulatory or antitrust agency is required in connection with such
purchase, the Holder will promptly file the required notice or application for
approval, will promptly notify Issuer of such filing, and will expeditiously
process the same and the period of time that otherwise would run pursuant to
this sentence will run instead from the date on which any required notification
periods have expired or been terminated or such approvals have been obtained and
any requisite waiting period or periods shall have passed. Any exercise of the
Option will be deemed to occur on the Notice Date relating to that exercise.

            2.2.5 Closing. At the closing referred to in subsection 2.2.4, the
Holder will (i) pay to Issuer the aggregate purchase price for the shares of
Common Stock purchased pursuant to the exercise of the Option in immediately
available funds by wire transfer to a bank account designated by Issuer and (ii)
present and surrender this Option Agreement to Issuer at its principal executive
offices, provided that the failure or refusal of the Issuer to designate such a
bank account or accept surrender of this Option Agreement will not preclude the
Holder from exercising the Option.

            2.2.6 Delivery of Certificates.

                (a) At the closing, simultaneously with the delivery of
immediately available funds as provided in subsection 2.2.5, Issuer will deliver
to the Holder a certificate or certificates representing the number of shares of
Common Stock purchased by the Holder and, if the Option is exercised in part
only, a new Option evidencing the rights of the Holder to purchase the balance
of the shares purchasable hereunder.

                (b) Certificates for Common Stock delivered at a closing
hereunder may be endorsed with a restrictive legend that reads substantially as
follows:

        The transfer of the shares represented by this certificate is subject to
        certain provisions of an agreement between the registered holder hereof
        and Issuer and to resale restrictions arising under the Securities Act
        of 1933, as amended. A copy of such agreement is on file at the
        principal office of Issuer and will be provided to the holder hereof
        without charge upon receipt by Issuer of a written request therefore.

                (c) The reference to the resale restrictions of the Securities
Act of 1933, as amended (the "1933 Act") in the above legend will be removed by
delivery of substitute certificate(s) without such reference if the Holder has
delivered to Issuer a copy of a letter from the staff of the SEC, or an opinion
of counsel, in form and substance reasonably satisfactory to Issuer, to the
effect that such legend is not required for purposes of the 1933 Act. The
reference to the provisions of this Option Agreement in the above legend will be
removed by delivery of substitute certificate(s) without such reference if the
shares have been sold or transferred in


                                      C-5
<PAGE>   167

compliance with the provisions of this Option Agreement and under circumstances
that do not require the retention of such reference in the opinion of counsel to
the Holder. The legend will be removed in its entirety if the conditions in the
preceding two sentences are both satisfied. In addition, such certificates shall
bear any other legend as may be required by law.

            2.2.7 Rights of Holder. Upon the giving by the Holder to Issuer of
the written notice of exercise of the Option provided for under subsection 2.2.4
and the tender of the applicable purchase price in immediately available funds,
the Holder will be deemed, subject to the receipt of any necessary regulatory
approvals, to be the holder of record of the shares of Common Stock issuable
upon such exercise, notwithstanding that the stock transfer books of Issuer are
then closed or that certificates representing such shares of Common Stock have
not then actually been delivered to the Holder. Issuer will pay all expenses,
and any and all United States federal, state and local taxes and other charges
that may be payable in connection with the preparation, issue and delivery of
stock certificates under this Section 2 in the name of the Holder or its
assignee, transferee or designee.

                                    SECTION 3
                               COVENANTS OF ISSUER

        Issuer agrees:

            (a) that it will at all times maintain, free from preemptive rights,
sufficient authorized but unissued or treasury shares of Common Stock so that
the Option may be exercised without additional authorization of Common Stock
after giving effect to all other options, warrants, convertible securities and
other rights to purchase Common Stock;

            (b) that it will not, by charter amendment or through
reorganization, consolidation, merger, dissolution or sale of assets, or by any
other voluntary act, avoid or seek to avoid the observance or performance of any
of the covenants, stipulations or conditions to be observed or performed by
Issuer under this Option Agreement;

            (c) promptly to take all action as may from time to time be required
(including (i) complying with all applicable premerger notification, reporting
and waiting period requirements specified in 15 U.S.C. Section 18a and
regulations promulgated thereunder and (ii) in the event, under the Bank Holding
Company Act of 1956, as amended (the "BHCA"), or the Change in Bank Control Act
of 1978, as amended, or any state or other federal thrift or banking law, prior
approval of or notice to the Federal Reserve Board or to any state or other
federal regulatory authority is necessary before the Option may be exercised,
cooperating fully with the Holder in preparing such applications or notices and
providing such information to the Federal Reserve Board or such state or other
federal regulatory authority as they may require) in order to permit the Holder
to exercise the Option and Issuer duly and effectively to issue shares of Common
Stock pursuant hereto; and

            (d) promptly to take all action provided herein to protect the
rights of the Holder against dilution.


                                      C-6
<PAGE>   168

                                    SECTION 4
                       EXCHANGE OR REPLACEMENT OF OPTIONS

        This Option Agreement (and the Option granted hereby) are exchangeable,
without expense, at the option of the Holder, upon presentation and surrender of
this Option Agreement at the principal office of Issuer, for other Agreements
providing for Options of different denominations entitling the holder thereof to
purchase, on the same terms and subject to the same conditions as are set forth
herein, in the aggregate the same number of shares of Common Stock purchasable
hereunder. The terms "Option Agreement" and "Option" include any Agreements and
related Options for which this Option Agreement (and the Option granted hereby)
may be exchanged. Upon receipt by Issuer of evidence reasonably satisfactory to
it of the loss, theft, destruction or mutilation of this Option Agreement, and
(in the case of loss, theft or destruction) of reasonably satisfactory
indemnification, and upon surrender and cancellation of this Option Agreement,
if mutilated, Issuer will execute and deliver a new Option Agreement of like
tenor and date. Any such new Option Agreement executed and delivered will
constitute an additional contractual obligation on the part of Issuer, whether
or not the Option Agreement so lost, stolen, destroyed or mutilated is at any
time enforceable by anyone.

                                    SECTION 5
                           ADJUSTMENT OF OPTION SHARES

        5.1 Adjustment of Number of Shares. In addition to the adjustment in the
number of shares of Common Stock that are purchasable upon exercise of the
Option pursuant to Section 1 of this Option Agreement, the number of shares of
Common Stock purchasable upon the exercise of the Option and the Option Price
are subject to adjustment from time to time as provided in this subsection 5.1.
In the event of any change in, or distributions in respect of, the Common Stock
by reason of stock dividends, split-ups, mergers, recapitalizations,
combinations, subdivisions, conversions, exchanges of shares or the like, the
type and number of shares of Common Stock purchasable upon exercise of the
Option will be appropriately adjusted and proper provision will be made so that,
in the event that any additional shares of Common Stock are to be issued or
otherwise become outstanding as a result of any such change (other than pursuant
to an exercise of the Option), the number of shares of Common Stock that remain
subject to the Option will be increased so that, after such issuance and
together with shares of Common Stock previously issued pursuant to the exercise
of the Option (as adjusted on account of any of the foregoing changes in the
Common Stock), it equals 19.9% of the number of shares of Common Stock issued
and outstanding immediately prior to such issuance.

        5.2 Adjustment of Exercise Price. Whenever the number of shares of
Common Stock purchasable upon exercise hereof is adjusted as provided in
subsection 5.1, the Option Price shall be adjusted by multiplying the Option
Price by a fraction, the numerator of which is equal to the number of shares of
Common Stock purchasable prior to the adjustment and the denominator of which is
equal to the number of shares of Common Stock purchasable after the adjustment.


                                      C-7
<PAGE>   169


                                    SECTION 6
                          REGISTRATION OF OPTION SHARES

        6.1 Registration. Upon the occurrence of a Subsequent Triggering Event
that occurs prior to an Exercise Termination Event, Issuer will, at the request
of Grantee delivered within twelve (12) months (or such later period as provided
in Section 10) of such Subsequent Triggering Event (whether on its own behalf or
on behalf of any subsequent holder of this Option (or part thereof) or any of
the shares of Common Stock issued pursuant hereto), promptly prepare, file and
keep current a registration statement under the 1933 Act covering any shares
issued and issuable pursuant to this Option and will use its reasonable best
efforts to cause such registration statement to become effective and remain
current in order to permit the sale or other disposition of any shares of Common
Stock issued upon total or partial exercise of this Option ("Option Shares") in
accordance with any plan of disposition requested by Grantee. Issuer will use
its reasonable best efforts to cause such registration statement promptly to
become effective and then to remain effective for such period not in excess of
180 days from the day such registration statement first becomes effective or
such shorter time as may be reasonably necessary to effect such sales or other
dispositions. Grantee will have the right to demand two such registrations. The
Issuer will bear the costs of such registrations (including, but not limited to,
Issuer's attorneys' fees, printing costs and filing fees, except for
underwriting discounts or commissions, brokers' fees and the fees and
disbursements of Grantee's counsel related thereto).

        6.2 Limitation on Registration Rights. Notwithstanding subsection 6.1,
if, at the time of any request by Grantee for registration of Option Shares as
provided in subsection 6.1, Issuer is in registration with respect to an
underwritten public offering by Issuer of shares of Common Stock, and if in the
good faith judgment of the managing underwriter or managing underwriters, or, if
none, the sole underwriter or underwriters, of such offering the offer and sale
of the Option Shares would interfere with the successful marketing of the shares
of Common Stock offered by Issuer, the number of Option Shares otherwise to be
covered in the registration statement contemplated hereby may be reduced;
provided,

            (a) that after any such required reduction the number of Option
Shares to be included in such offering for the account of the Holder must
constitute at least 25% of the total number of shares to be sold by the Holder
and Issuer in the aggregate; and

            (b) that if such reduction occurs, then Issuer will file a
registration statement for the balance as promptly as practicable thereafter as
to which no reduction pursuant to this Section 6 will be permitted or occur and
the Holder will thereafter be entitled to one additional registration and the
twelve (12) month period referred to in the first sentence of this section shall
be increased to twenty-four (24) months. Notwithstanding anything to the
contrary contained herein, in no event will the number of registrations that
Issuer is obligated to effect be increased by reason of the fact that there is
more than one Holder as a result of any assignment or division of this Option
Agreement.

        6.3 Information from Holder. Each Holder will provide all information
reasonably requested by Issuer for inclusion in any registration statement to be
filed hereunder. If requested by any such Holder in connection with such
registration, Issuer will become a party to any underwriting agreement relating
to the sale of such shares, but only to the extent of obligating


                                      C-8
<PAGE>   170


itself in respect of representations, warranties, indemnities and other
agreements customarily included in such underwriting agreements for Issuer.

        6.4 Notice to Other Parties. Upon receiving any request under this
Section 6 from any Holder, Issuer agrees to send a copy thereof to any other
person known to Issuer to be entitled to registration rights under this Section
6, in each case by promptly mailing the same, postage prepaid, to the address of
record of the persons entitled to receive such copies.

                                    SECTION 7
                                REPURCHASE EVENTS

        7.1 Definitions. For purposes of the Option Agreement, the following
terms will have the meanings set forth below:

            (a) "Option Repurchase Price" means to the amount by which (i) the
market/offer price exceeds (ii) the Option Price, multiplied by the number of
shares for which this Option may then be exercised.

            (b) "Repurchase Event" means the occurrence of any of the following
events or transactions after the date of this Option Agreement:

                (i) the acquisition by any person (other than Grantee or any
Grantee Subsidiary) of beneficial ownership of 50% or more of the then
outstanding Common Stock; or

                (ii) the consummation of any Acquisition Transaction described
in subsection 2.1(a) hereof, except that the percentage referred to in clause
(iii) will be 50%.

            (c) "Option Share Repurchase Price" means the market/offer price
multiplied by the number of Option Shares designated by the Holder in any
repurchase request.

            (d) "Market/offer price" means the highest of (i) the price per
share of Common Stock at which a tender or exchange offer therefore has been
made, (ii) the price per share of Common Stock to be paid by any third party
pursuant to an agreement with Issuer, (iii) the highest closing price for shares
of Common Stock within the six-month period immediately preceding the date the
Holder gives notice of the required repurchase of this Option or the Owner gives
notice of the required repurchase of Option Shares, as the case may be, or (iv)
in the event of a sale of all or any substantial part of Issuer's assets or
deposits, the sum of the net price paid in such sale for such assets or deposits
and the current market value of the remaining net assets of Issuer as determined
by a nationally recognized investment banking firm selected by the Holder or the
Owner, as the case may be, and reasonably acceptable to Issuer, divided by the
number of shares of Common Stock of Issuer outstanding at the time of such sale.
In determining the market/offer price, the value of consideration other than
cash will be determined by a nationally recognized investment banking firm
selected by the Holder or Owner, as the case may be, and reasonably acceptable
to Issuer.

        7.2 Repurchase Request. At any time after a Repurchase Event (i) at the
request of the Holder, delivered prior to an Exercise Termination Event (or such
later period as provided in Section 10), Issuer (or any successor thereto) will
repurchase the Option from the Holder at the


                                      C-9
<PAGE>   171


Option Repurchase Price and (ii) at the request of the owner of Option Shares
from time to time (the "Owner"), delivered prior to an Exercise Termination
Event (or such later period as provided in Section 10), Issuer (or any successor
thereto) will repurchase the number of the Option Shares from the Owner as the
Owner designates at the Option Share Repurchase Price.

        7.3 Surrender of Option for Repurchase. The Holder and the Owner, as the
case may be, may exercise its right to require Issuer to repurchase the Option
and any Option Shares pursuant to this Section 7 by surrendering for such
purpose to Issuer, at its principal office, a copy of this Option Agreement or
certificates for Option Shares, as applicable, accompanied by a written notice
or notices stating that the Holder or the Owner, as the case may be, elects to
require Issuer to repurchase this Option and/or the Option Shares in accordance
with the provisions of this Section 7. As promptly as practicable, and in any
event within five business days after the surrender of the Option and/or
certificates representing Option Shares and the receipt of such notice or
notices relating thereto, Issuer will deliver or cause to be delivered to the
Holder the Option Repurchase Price and/or to the Owner the Option Share
Repurchase Price therefore or the portion thereof that Issuer is not then
prohibited under applicable law and regulation from so delivering.

        7.4 Legal Restrictions on Repurchases.

            7.4.1 To the extent that Issuer is prohibited under applicable law
or regulation, or as a consequence of administrative policy, from repurchasing
the Option and/or the Option Shares in full, Issuer will immediately so notify
the Holder and/or the Owner and thereafter deliver or cause to be delivered,
from time to time, to the Holder and/or the Owner, as appropriate, the portion
of the Option Repurchase Price and the Option Share Repurchase Price,
respectively, that it is no longer prohibited from delivering, within five
business days after the date on which Issuer is no longer so prohibited. Issuer
hereby undertakes to use its reasonable best efforts to obtain all required
regulatory and legal approvals and to file any required notices as promptly as
practicable in order to accomplish such repurchase.

            7.4.2 If Issuer at any time after delivery of a notice of repurchase
pursuant to subsection 7.3 is prohibited under applicable law or regulation, or
as a consequence of administrative policy, from delivering to the Holder and/or
the Owner, as appropriate, the Option Repurchase Price and the Option Share
Repurchase Price, respectively, in full, the Holder or Owner may revoke its
notice of repurchase of the Option and/or the Option Shares whether in whole or
to the extent of the prohibition.

            7.4.3 In the event of a partial repurchase under clause 7.4.2,
Issuer will promptly (i) deliver to the Holder and/or the Owner, as appropriate,
that portion of the Option Repurchase Price and/or the Option Share Repurchase
Price that Issuer is not prohibited from delivering; and (ii) deliver, as
appropriate, either (A) to the Holder, a new Agreement evidencing the right of
the Holder to purchase that number of shares of Common Stock obtained by
multiplying the number of shares of Common Stock for which the surrendered
Agreement was exercisable at the time of delivery of the notice of repurchase by
a fraction, the numerator of which is the Option Repurchase Price less the
portion thereof theretofore delivered to the Holder and the denominator of which
is the Option Repurchase Price, and/or (B) to the Owner, a certificate for the
Option Shares it is then so prohibited from repurchasing. If an Exercise


                                      C-10
<PAGE>   172

Termination Event has occurred prior to the date of the notice by Issuer
described in clause 7.4.1, or is scheduled to occur at any time before the
expiration of a period ending on the thirtieth day after such date, the Holder
will nonetheless have the right to exercise the Option until the expiration of
such 30-day period.

                                    SECTION 8
                           CHANGE IN CONTROL OF ISSUER

        8.1 Definitions. For the purposes of this Option Agreement, the
following terms have the meanings indicated:

            (a) "Acquiring Corporation" means (i) the continuing or surviving
person of a consolidation or merger with Issuer (if other than Issuer), (ii) the
acquiring person in a plan of exchange in which Issuer is acquired, (iii) the
Issuer in a merger or plan of exchange in which Issuer is the continuing or
surviving or acquiring person, and (iv) the transferee of all or a substantial
part of Issuer's assets or deposits (or the assets or deposits of the Issuer
Subsidiary).

            (b) "Substitute Common Stock" means the common stock issued by the
issuer of the Substitute Option upon exercise of the Substitute Option.

            (c) "Assigned Value" means the market/offer price, as defined in
subsection 7.1(d).

            (d) "Average Price" means the average closing price of a share of
the Substitute Common Stock for one year immediately preceding the
consolidation, merger or sale in question, but in no event higher than the
closing price of the shares of Substitute Common Stock on the day preceding such
consolidation, merger or sale; provided that if Issuer is the issuer of the
Substitute Option, the Average Price will be computed with respect to a share of
common stock issued by the person merging into Issuer or by any company which
controls or is controlled by such person, as the Holder may elect.

            (e) "Change of Control Agreement" means an agreement (i) to
consolidate with or merge into any person, other than Grantee or a Grantee
Subsidiary, or engage in a plan of exchange with any person, other than Grantee
or a Grantee Subsidiary and Issuer is not the continuing or surviving
corporation of such consolidation or merger or the acquirer in such plan of
exchange, (ii) to permit any person, other than Grantee or a Grantee Subsidiary,
to merge into Issuer or be acquired by Issuer in a plan of exchange and Issuer
is the continuing or surviving or acquiring corporation, but, in connection with
such merger or plan of exchange, the then outstanding shares of Common Stock
will be changed into or exchanged for stock or other securities of any other
person or cash or any other property or the then outstanding shares of Common
Stock will after such merger or plan of exchange represent less than 50% of the
outstanding shares and share equivalents of the merged or acquiring company, or
(iii) to sell or otherwise transfer all or a substantial part of its or the
Issuer Subsidiary's assets or deposits to any person, other than Grantee or a
Grantee Subsidiary.


                                      C-11
<PAGE>   173

        8.2 Substitute Options.

            8.2.1 If before an Exercise Termination Event, Issuer enters into a
Change of Control Agreement then, the Change of Control Agreement will make
proper provision so that the Option shall, upon the consummation of any such
transaction and upon the terms and conditions set forth in this Option
Agreement, be converted into, or exchanged for, an option (the "Substitute
Option"), at the election of the Holder, of either (i) the Acquiring Corporation
(as hereinafter defined) or (ii) any person that controls the Acquiring
Corporation.

            8.2.2 The Substitute Option will have the same terms as the Option,
provided that if the terms of the Substitute Option cannot, for legal reasons,
be the same as the Option, such terms will be as similar as possible and in no
event less advantageous to the Holder. The issuer of the Substitute Option will
also enter into an agreement with the then Holder or Holders of the Substitute
Option in substantially the same form as this Agreement (after giving effect for
such purpose to the provisions of Section 9), which agreement will be applicable
to the Substitute Option.

            8.2.3 The Substitute Option will be exercisable for such number of
shares of Substitute Common Stock as is equal to the Assigned Value multiplied
by the number of shares of Common Stock for which the Option was exercisable
immediately prior to the event described in subsection 8.2.1, divided by the
Average Price. The exercise price of the Substitute Option per share of
Substitute Common Stock will then be equal to the Option Price multiplied by a
fraction, the numerator of which will be the number of shares of Common Stock
for which the Option was exercisable immediately prior to the event described in
subsection 8.2.1 and the denominator of which will be the number of shares of
Substitute Common Stock for which the Substitute Option is exercisable.

            8.2.4 In no event, pursuant to any of the foregoing paragraphs, will
the Substitute Option be exercisable for more than 19.9% of the shares of
Substitute Common Stock outstanding immediately prior to exercise of the
Substitute Option. In the event that the Substitute Option would be exercisable
for more than 19.9% of the shares of Substitute Common Stock outstanding
immediately prior to exercise but for this clause 8.2.4, the issuer of the
Substitute Option (the "Substitute Option Issuer") shall make a cash payment to
Holder equal to the excess of (i) the value of the Substitute Option without
giving effect to the limitation in this clause (e) over (ii) the value of the
Substitute Option after giving effect to the limitation in this clause (e). This
difference in value will be determined by a nationally recognized investment
banking firm selected by the Holder.

            8.3 Requirements for Change in Control Agreement. Issuer will not
enter into any Change of Control Agreement unless the Acquiring Corporation and
any person that controls the Acquiring Corporation assume in writing all the
obligations of Issuer hereunder.

                                    SECTION 9
                   REPURCHASE OF SUBSTITUTE OPTIONS OR SHARES

        9.1 Definitions. For the purposes of this Option Agreement, the
following terms have the meanings indicated:


                                      C-12
<PAGE>   174


            (a) "Highest Closing Price" means the highest closing price for
shares of Substitute Common Stock within the six-month period immediately
preceding the date the Substitute Option Holder gives notice of the required
repurchase of the Substitute Option or the Substitute Share Owner gives notice
of the required repurchase of the Substitute Shares, as applicable.

            (b) "Substitute Option Repurchase Price" means the amount by which
the Highest Closing Price exceeds the exercise price of the Substitute Option
multiplied by its number of shares of Substitute Common Stock for which the
Substitute Option may then be exercised.

            (c) "Substitute Share Repurchase Price" means the Highest Closing
Price multiplied by the number of shares designated by the Substitute Share
Option.

        9.2 Repurchase. At the request of the holder of the Substitute Option
(the "Substitute Option Holder"), the issuer of the Substitute Option (the
"Substitute Option Issuer") will repurchase the Substitute Option from the
Substitute Option Holder at the Substitute Option Repurchase Price, and at the
request of the owner (the "Substitute Share Owner") of shares of Substitute
Common Stock (the "Substitute Shares"), the Substitute Option Issuer shall
repurchase the Substitute Shares at the Substitute Share Repurchase Price.

        9.3 Exercise of Repurchase Rights. The Substitute Option Holder and the
Substitute Share Owner, as the case may be, may exercise its respective rights
to require the Substitute Option Issuer to repurchase the Substitute Option and
the Substitute Shares pursuant to this Section 9 by surrendering for such
purpose to the Substitute Option Issuer, at its principal office, the agreement
for such Substitute Option (or, in the absence of such an agreement, a copy of
this Agreement) and/or certificates for Substitute Shares accompanied by a
written notice or notices stating that the Substitute Option Holder or the
Substitute Share Owner, as the case may be, elects to require the Substitute
Option Issuer to repurchase the Substitute Option and/or the Substitute Shares
in accordance with the provisions of this Section 9. As promptly as practicable
and in any event within five business days after the surrender of the Substitute
Option and/or certificates representing Substitute Shares and the receipt of
such notice or notices relating thereto, the Substitute Option Issuer will
deliver or cause to be delivered to the Substitute Option Holder the Substitute
Option Repurchase Price and/or to the Substitute Share Owner the Substitute
Share Repurchase Price therefore or the portion thereof which the Substitute
Option Issuer is not then prohibited under applicable law and regulation from so
delivering.

        9.4 Limitations on Repurchase.

            9.4.1 To the extent that the Substitute Option Issuer is prohibited
under applicable law or regulation, or as a consequence of administrative
policy, from repurchasing the Substitute Option and/or the Substitute Shares in
part or in full, the Substitute Option Issuer will immediately so notify the
Substitute Option Holder and/or the Substitute Share Owner and thereafter
deliver or cause to be delivered, from time to time, to the Substitute Option
Holder and/or the Substitute Share Owner, as appropriate, the portion of the
Substitute Option Repurchase Price and/or the Substitute Share Repurchase Price,
respectively, which it is no longer prohibited from delivering, within five (5)
business days after the date on which the


                                      C-13
<PAGE>   175


Substitute Option Issuer is no longer so prohibited. Substitute Option Issuer
will use its reasonable best efforts to receive all required regulatory and
legal approvals as promptly as practicable in order to accomplish such
repurchase.

            9.4.2 If the Substitute Option Issuer is at any time after delivery
of a notice of repurchase pursuant to subsection 9.3 prohibited under applicable
law or regulation, or as a consequence of administrative policy, from delivering
to the Substitute Option Holder and/or the Substitute Share Owner, as
appropriate, the Substitute Option Repurchase Price and the Substitute Share
Repurchase Price, respectively, in full, the Substitute Option Holder and/or
Substitute Share Owner may revoke its notice of repurchase of the Substitute
Option or the Substitute Shares either in whole or to the extent of prohibition.

            9.4.3 In the event of a partial repurchase under subsection 9.4.2,
the Substitute Option Issuer will promptly (i) deliver to the Substitute Option
Holder or Substitute Share Owner, as appropriate, that portion of the Substitute
Option Repurchase Price or the Substitute Share Repurchase Price that the
Substitute Option Issuer is not prohibited from delivering; and (ii) deliver, as
appropriate, either (A) to the Substitute Option Holder, a new Substitute Option
evidencing the right of the Substitute Option Holder to purchase that number of
shares of the Substitute Common Stock obtained by multiplying the number of
shares of the Substitute Common Stock for which the surrendered Substitute
Option was exercisable at the time of delivery of the notice of repurchase by a
fraction, the numerator of which is the Substitute Option Repurchase Price less
the portion thereof theretofore delivered to the Substitute Option Holder and
the denominator of which is the Substitute Option Repurchase Price, and/or (B)
to the Substitute Share Owner, a certificate for the Substitute Option Shares it
is then so prohibited from repurchasing. If an Exercise Termination Event has
occurred prior to the date of the notice by the Substitute Option Issuer
described in subsection 9.3, or is scheduled to occur at any time before the
expiration of a period ending on the thirtieth day after such date, the
Substitute Option Holder will nevertheless have the right to exercise the
Substitute Option until the expiration of such 30-day period.

                                   SECTION 10
                          EXTENSION OF EXERCISE PERIODS

        The 30-day, 6-month, 12-month, 18-month or 24-month periods for exercise
of certain rights under Sections 2, 6, 7, 9, 12 and 15 will be extended: (i) to
the extent necessary to obtain all regulatory approvals for the exercise of such
rights (for so long as the Holder, Owner, Substitute Option Holder or Substitute
Share Owner, as the case may be, is using commercially reasonable efforts to
obtain such regulatory approvals), and for the expiration of all statutory
waiting periods; and (ii) to the extent necessary to avoid liability under
Section 16(b) of the 1934 Act by reason of such exercise.


                                      C-14
<PAGE>   176

                                   SECTION 11
                            ISSUER'S REPRESENTATIONS

        Issuer hereby represents to Grantee as follows:

        11.1 Issuer has full corporate power and authority to execute and
deliver this Option Agreement and to consummate the transactions contemplated
hereby. The execution and delivery of this Option Agreement and the consummation
of the transactions contemplated hereby have been duly and validly authorized by
the Issuer Board prior to the date hereof and no other corporate proceedings on
the part of Issuer are necessary to authorize this Option Agreement or to
consummate the transactions so contemplated. This Option Agreement has been duly
and validly executed and delivered by Issuer.

        11.2 This Option Agreement, and the transactions contemplated by it are
not subject to the requirements of any "moratorium," "control share", "fair
price", "affiliate transactions", "business combination" or other antitakeover
laws and regulations of any state applicable to Issuer. The provisions of
Article "Eighth" of Issuer's certificate of incorporation do not apply to the
entering into of this Option Agreement and the transactions contemplated hereby.

        11.3 Issuer has taken all necessary corporate action to authorize and
reserve and to permit it to issue, and at all times from the date hereof through
the termination of this Option Agreement in accordance with its terms will have
reserved for issuance upon the exercise of the Option, that number of shares of
Common Stock equal to the maximum number of shares of Common Stock at any time
and from time to time issuable hereunder, and all such shares, upon issuance
pursuant thereto, will be duly authorized, validly issued, fully paid,
nonassessable, and will be delivered free and clear of all claims, liens,
encumbrance and security interests and not subject to any preemptive rights.

                                   SECTION 12
                           LIMITS ON OPTION VALUE AND
                               SURRENDER OF OPTION

        12.1 Definitions.

            12.1.1 "Total Profit" means the aggregate amount (before taxes) of
the following: (i) the amount received by Grantee pursuant to Issuer's
repurchase of the Option (or any portion thereof) pursuant to Section 7, (ii)
(x) the amount received by Grantee pursuant to Issuer's repurchase of Option
Shares pursuant to Section 7, less (y) Grantee's purchase price for such Option
Shares, (iii) (x) the net cash amounts received by Grantee pursuant to the sale
of Option Shares (or any other securities into which Option Shares are converted
or exchanged) to any unaffiliated party (but specifically excluding any amounts
in excess of the market value thereof on the date purchased by Grantee), less
(y) the Grantee's purchase price of such Option Shares, (iv) any amounts
received by Grantee on the transfer of the Option (or any portion thereof) to
any unaffiliated party, and (v) any amount equivalent to the foregoing with
respect to the Substitute Option.

            12.1.2 "Notional Total Profit" means, with respect to any number of
shares as to which Grantee may propose to exercise this Option, the Total Profit
determined as of the date of


                                      C-15
<PAGE>   177


such proposed exercise assuming that this Option were exercised on such date for
such number of shares and assuming that such shares, together with all other
Option Shares held by Grantee and its affiliates as of such date, were sold for
cash at the closing market price for the Common Stock as of the close of
business on the preceding trading day (less customary brokerage commissions).

            12.1.3 "Surrender Price" means an amount equal to $4.5 million (i)
plus, if applicable, Grantee's purchase price with respect to any Option Shares
and (ii) minus, if applicable, the excess of (A) the net cash amounts, if any,
received by Grantee pursuant to the arms' length sale of Option Shares (or any
other securities into which such Option Shares were converted or exchanged) to
any unaffiliated party, over (B) Grantee's purchase price of such Option Shares.

        12.2 Limitations.

            12.2.1 Notwithstanding any other provision of this Option Agreement,
in no event will the Grantee's Total Profit exceed $4.5 million and, if it
otherwise would exceed such amount, the Grantee, at its sole election, will
either (i) reduce the number of shares of Common Stock subject to this Option,
(ii) deliver to Issuer for cancellation Option Shares previously purchased by
Grantee, (iii) pay cash to Issuer, or (iv) any combination thereof, so that
Grantee's actually realized Total Profit does not exceed $4.5 million after
taking into account the foregoing actions.

            12.2.2 Notwithstanding any other provision of this Option Agreement,
this Option may not be exercised for a number of shares as would, as of the date
of exercise, result in a Notional Total Profit of more than $4.5 million;
provided that nothing in this sentence will restrict any exercise of the Option
permitted hereby on any subsequent date.

        12.3 Surrender of Option.

            12.3.1 Grantee may, at any time following a Repurchase Event and
prior to the occurrence of an Exercise Termination Event (or such later period
as provided in Section 10), surrender the Option (together with any Option
Shares issued to and then owned by Grantee) to Issuer in exchange for a cash fee
equal to the Surrender Price; provided, however, that Grantee may not exercise
its rights pursuant to this subsection 12.3 if Issuer has repurchased the Option
(or any portion thereof) or any Option Shares pursuant to Section 7.

            12.3.2 Grantee may exercise its right to relinquish the Option and
any Option Shares pursuant to this subsection 12.3.1 by surrendering to Issuer,
at its principal office, a copy of this Agreement together with certificates for
Option Shares, if any, accompanied by a written notice stating (i) that Grantee
elects to relinquish the Option and Option Shares, if any, in accordance with
the provisions of this Section 12 and (ii) accept the Surrender Price. The
Surrender Price will be payable in immediately available funds on or before the
second business day following receipt of such notice by Issuer.

            12.3.3 To the extent that Issuer is prohibited under applicable law
or regulation, or as a consequence of administrative policy, from paying the
Surrender Price to Grantee in full, Issuer will immediately so notify Grantee
and thereafter deliver or cause to be delivered, from


                                      C-16
<PAGE>   178

time to time, to Grantee, the portion of the Surrender Price that it is no
longer prohibited from paying, within five business days after the date on which
Issuer is no longer so prohibited; provided, however, that if Issuer at any time
after delivery of a notice of surrender pursuant to subsection 12.3.2 is
prohibited under applicable law or regulation, or as a consequence of
administrative policy, from paying to Grantee the Surrender Price in full, (i)
Issuer will (A) use its reasonable best efforts to obtain all required
regulatory and legal approvals and to file any required notices as promptly as
practicable in order to make such payments, (B) within five days of the
submission or receipt of any documents relating to any such regulatory and legal
approvals, provide Grantee with copies of the same, and (C) keep Grantee advised
of both the status of any such request for regulatory and legal approvals, as
well as any discussions with any relevant regulatory or other third party
reasonably related to the same, and (ii) Grantee may revoke such notice of
surrender by delivery of a notice of revocation to Issuer and, upon delivery of
such notice of revocation, the Exercise Termination Event will be extended to a
date six months from the date on which the Exercise Termination Event would have
occurred if not for the provisions of this subsection 12.3 (during which period
Grantee may exercise any of its rights hereunder, including any and all rights
pursuant to this subsection 12.3.

                                   SECTION 13
                                  MISCELLANEOUS

        13.1 Assignment. Neither of the parties to this Option Agreement may
assign any of its rights or obligations under this Option Agreement or the
Option to any other person, without the express written consent of the other
party, except that if a Subsequent Triggering Event occurs prior to an Exercise
Termination Event, Grantee, subject to the express provisions hereof, may assign
in whole or in part its rights and obligations hereunder; provided, however,
that until the date 15 days following the date on which the Federal Reserve
Board or other applicable regulatory authority has approved an application by
Grantee to acquire the shares of Common Stock subject to the Option, Grantee may
not assign its rights under the Option except in (i) a widely dispersed public
distribution, (ii) a private placement in which no one party acquires the right
to purchase in excess of 2% of the voting shares of Issuer, (iii) an assignment
to a single party (e.g., a broker or investment banker) for the purpose of
conducting a widely dispersed public distribution on Grantee's behalf or (iv)
any other manner approved by the Federal Reserve Board or other applicable
regulatory authority.

        13.2 Best Efforts. Each of Grantee and Issuer will use its reasonable
best efforts to make all filings with, and to obtain consents of, all third
parties and governmental authorities necessary to the consummation of the
transactions contemplated by this Option Agreement, including, without
limitation, applying to the Federal Reserve Board under the BHCA, to the extent
required, for approval to acquire the shares issuable hereunder, but Grantee
will not be obligated to apply to state banking authorities for approval to
acquire the shares of Common Stock issuable hereunder until such time, if ever,
as it deems appropriate to do so.

        13.3 Equitable Relief. The parties hereto acknowledge that damages would
be an inadequate remedy for a breach of this Option Agreement by either party
hereto and that the obligations of the parties hereto will be enforceable by
either party hereto through injunctive or other equitable relief. In connection
therewith both parties waive the posting of any bond or similar requirement.


                                      C-17
<PAGE>   179


        13.4 Severance. If any term, provision, covenant or restriction
contained in this Option Agreement is held by a court or a federal or state
regulatory agency of competent jurisdiction to be invalid, void or
unenforceable, the remainder of the terms, provisions and covenants and
restrictions contained in this Option Agreement will remain in full force and
effect, and will in no way be affected, impaired or invalidated. If for any
reason such court or regulatory agency determines that the Holder is not
permitted to acquire, or Issuer is not permitted to repurchase pursuant to
Section 7, the full number of shares of Common Stock provided in subsection 1.1
hereof (as adjusted pursuant to Section 5 hereof), it is the express intention
of Issuer to allow the Holder to acquire or to require Issuer to repurchase such
lesser number of shares as may be permissible, without any amendment or
modification hereof.

        13.5 Notices. All notices, requests, claims, demands and other
communications hereunder will be deemed to have been duly given when delivered
in person, by fax, telecopy, or by registered or certified mail (postage
prepaid, return receipt requested) at the respective addresses of the parties
set forth in the Merger Agreement.

        13.6 Governing Law. This Option Agreement will be governed by and
construed in accordance with the laws of the State of Delaware, without regard
to the conflict of law principles thereof (except to the extent that mandatory
provisions of Federal law are applicable).

        13.7 Counterparts. This Option Agreement may be executed in two or more
counterparts, each of which will be deemed to be an original, but all of which
shall constitute one and the same agreement.

        13.8 Expenses. Except as otherwise expressly provided herein, each of
the parties hereto will bear and pay all costs and expenses incurred by it or on
its behalf in connection with the transactions contemplated hereunder, including
fees and expenses of its own financial consultants, investment bankers,
accountants and counsel.

        13.9 Entire Agreement. Except as otherwise expressly provided herein or
in the Merger Agreement, this Option Agreement contains the entire agreement
between the parties with respect to the transactions contemplated hereunder and
supersedes all prior arrangements or understandings with respect thereof,
written or oral. The terms and conditions of this Option Agreement will inure to
the benefit of and be binding upon the parties hereto and their respective
successors and permitted assignees. Nothing in this Option Agreement, expressed
or implied, is intended to confer upon any party, other than the parties hereto,
and their respective successors except as assignees, any rights, remedies,
obligations or liabilities under or by reason of this Option Agreement, except
as expressly provided herein.

        13.10 Capitalized Terms. Capitalized terms used in this Option Agreement
and not defined herein will have the meanings assigned thereto in the Merger
Agreement.


                                      C-18
<PAGE>   180

        Each of the parties has caused this Option Agreement to be executed on
its behalf by its officer thereunto duly authorized, all as of the date first
above written.

                                     GLACIER BANCORP, INC.

                                     By     /s/ Michael J. Blodnick
                                          --------------------------------------
                                          Name:    Michael J. Blodnick
                                          Title:   Chief Executive Officer

                                     WESTERFED FINANCIAL CORPORATION

                                     By     /s/ Ralph K. Holliday
                                          --------------------------------------
                                          Name:    Ralph K. Holliday
                                          Title:   Chief Executive Officer


                                      C-19
<PAGE>   181

September 20, 2000



                                                                     APPENDIX  D



                           [D.A. DAVIDSON LETTERHEAD]



Board of Directors
Glacier Bancorp, Inc.
49 Commons Loop
Kalispell, MT 59901

Gentlemen:

You have asked D.A. Davidson & Co. ("Davidson") to provide this written opinion
as to the fairness to the holders of the outstanding shares of common stock of
Glacier Bancorp, Inc. ("Glacier"), Kalispell, Montana, from a financial point of
view, of the total merger consideration to be paid by Glacier to the holders of
the outstanding shares of common stock and holders of common stock options of
WesterFed Financial Corporation ("WesterFed"), Missoula, Montana in the proposed
acquisition of WesterFed by Glacier.

We reviewed the September 14, 2000 draft of the Plan and Agreement of Merger
between Glacier Bancorp, Inc. and WesterFed Financial Corporation to be dated as
of September 20, 2000, (the "Agreement"). The Agreement states that WesterFed
will merge into Glacier, which will be the surviving corporation and that
Western Security Bank will become a wholly-owned subsidiary of Glacier. One
hundred percent of the outstanding common stock shares and outstanding common
stock option of WesterFed will be exchanged for shares of Glacier common stock,
cash, or a combination of both, according to the formula specified in the
Agreement.

Davidson, as part of its investment banking business, is engaged in the
valuation of banking and other businesses and their securities in connection
with mergers and acquisitions, negotiated underwritings, competitive biddings,
secondary distributions of listed and unlisted securities, private placements
and valuations for estate, corporate and other purposes. We make a market in the
common stocks of Glacier and WesterFed and publish a research recommendation on
both stocks. Davidson will receive a fee for providing our opinion to you.

In connection with our opinion, we have, among other things:

                                      D-1

<PAGE>   182
Board of Directors
Glacier Bancorp
September 20, 2000
Page 2 of 3


        1.      Evaluated financial and operating information relating to
                Glacier and WesterFed including without limitation, financial
                reports of both companies filed with the SEC and other
                regulatory agencies for the fiscal years ending December 31,
                1998 and 1999 and for the periods ending March 31, 2000 and June
                30, 2000, and other internal operating reports and analyses,
                asset quality evaluations and related information;

        2.      Conducted conversations with executive management of both
                regarding recent and forecasted financial performance;

        3.      Compared operating results of both with those of certain other
                banks and thrifts in Montana and the western United States;

        4.      Compared the total merger consideration proposed in this
                transaction with the consideration paid by other companies
                acquiring thrifts throughout the United States;

        5.      Compared the relative contributions of assets, liabilities,
                income and expenses of each to the resulting company in the
                merger, to the relative ownership after the proposed merger is
                completed;

        6.      Analyzed the pro-forma results that the resulting company could
                produce through 2002 based upon assumptions provided by
                management; and

        7.      Performed such other analyses, as we deemed appropriate.

We have assumed and relied upon, without independent verification, the accuracy
and completeness of the information provided to us by both companies for the
purpose of this opinion. Additionally, where appropriate, we have relied upon
publicly available information that we believe to be reliable, accurate and
complete; however, we cannot guarantee the reliability, accuracy or completeness
of any such publicly available information. We have also assumed the
reasonableness of and relied upon the estimates and judgments of each company's
management as to the resulting company's future business and financial
prospects.

We have not made an independent evaluation of the assets or liabilities of
Glacier or WesterFed, nor has either company furnished us with such appraisals.
We are not experts in the evaluation of loan portfolios for the purposes of
assessing the adequacy of the allowance for loan and lease losses and have
assumed that such allowances for each of the companies are, in the aggregate,
adequate to cover such losses.

Our opinion is necessarily based upon economic, market and other conditions as
in effect on, and the information made available to us as of September 20, 2000.
Events occurring after September 20, 2000 could materially affect the
assumptions used in preparing this opinion.


                                      D-2
<PAGE>   183
Board of Directors
Glacier Bancorp
September 20, 2000
Page 3 of 3

The preparation of an opinion involves various determinations as to the most
appropriate and relevant methods of financial analysis and the application of
those methods to the particular circumstances. Consequently, this opinion is not
readily susceptible to partial-analysis of summary description. Moreover, the
evaluation of fairness, from a financial point of view, of the merger
consideration is to some extent subjective, based on our experience and
judgment, and not merely, the result of mathematical analysis of financial data.
Accordingly, not withstanding the separate factors summarized above, we believe
that our analyses must be considered as a whole and that selecting portions of
our analysis and of the factors considered by us, without considering all
analyses and factors, could create an incomplete view of the evaluation process
underlying our opinion.

Our opinion is limited to the fairness of the total merger consideration, from a
financial point of view, to the holders of Glacier common stock. This letter is
intended for the benefit and sole use of the Glacier Board of Directors and may
not be used for any purpose and is not a recommendation to any Glacier common
stock holder as to how such holder should vote with respect to the merger. Our
opinion does not address the underlying business decision to proceed with the
merger.

Based upon the foregoing and other such matters that we have deemed relevant, it
is our opinion, as of September 20, 2000 that the total merger consideration to
be paid by Glacier to the holders of the outstanding shares of common stock and
holders of common stock options of WesterFed as specified in the Agreement is
fair, from a financial point of view, to the common stock holders of Glacier.

Very truly yours,

D.A. DAVIDSON & CO.


By:      /s/ Albert V. Glowasky
    Albert V. Glowasky
    Managing Director
                                      D-3
<PAGE>   184

CONFIDENTIAL

September 20, 2000



                                                                     APPENDIX  E

                  [PUTNAM LOVELL SECURITIES, INC. LETTERHEAD]



Board of Directors
WesterFed Financial Corporation
110 East Broadway
Missoula, MT  59806

Ladies and Gentlemen:

We understand that WesterFed Financial Corporation, a Delaware corporation
("Seller"), and Glacier Bancorp Inc., a Delaware corporation ("Buyer"), has
entered into a merger Agreement dated September 20, 2000 (the "Merger
Agreement"), pursuant to which, upon completion of the transactions contemplated
thereby, Seller will be merged with and into Buyer, with Buyer being the
surviving entity (the "Merger"). Pursuant to the Merger, as more fully described
in the Merger Agreement, we understand that each outstanding share of Seller
common stock ("Seller Common Stock"), will be exchanged for shares of Buyer
common stock ("Buyer Common Stock"), cash or a combination of both equal to (a)
1.1 multiplied by the average of the daily closing price per share of Buyer
Common Stock for 20 consecutive trading days ending 15 days prior to the closing
date the "Average Closing Price", plus, (b) $9.05, subject to certain
adjustments as more fully described in the Merger Agreement based on the Average
Closing Price (the "Consideration"). In addition, in the event that Average
Closing Price is less than $9.00 or is greater than $14.10, Seller has certain
rights to terminate the Merger Agreement. The terms and conditions of the Merger
are set forth in more detail in the Merger Agreement.

You have asked for our opinion as investment bankers as to whether the
Consideration to be received by the shareholders of Seller pursuant to the
Merger is fair to such shareholders from a financial point of view, as of the
date hereof.

 In connection with our opinion, we have, among other things: (i) reviewed
certain publicly available financial and other data with respect to Seller and
Buyer, including the consolidated financial statements for recent years and
interim periods to June 30, 2000 and certain other relevant financial and
operating data relating to Seller and Buyer made available to us from published
sources and from the internal records of Seller and Buyer, (ii) reviewed the
financial terms and conditions of the September 18, 2000 draft of the Merger
Agreement; (iii) reviewed certain publicly available information concerning the
trading of, and the trading market for, Seller Common Stock and Buyer Common
Stock; (iv) compared the financial performance of Seller and Buyer with certain
other companies in the banking industry which we 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 we
deemed to be comparable,



                                      E-1
<PAGE>   185

Board of Directors
WesterFed Financial Corporation
September 20, 2000
Page 2 of 3

in whole or in part, to the Merger, (vi) reviewed and discussed with
representatives of the management of Seller and Buyer certain information of a
business and financial nature regarding Seller and Buyer, furnished to us by
them, including financial forecasts and related assumptions of Seller and Buyer,
(vii) made inquiries regarding and discussed the Merger and the Merger Agreement
and other matters related thereto with Seller's counsel; and (viii) performed
such other analyses and examinations as we deemed appropriate.

In connection with our review, we have not assumed any obligation independently
to verify the foregoing information and have relied on its being accurate and
complete in all material respects. With respect to the financial forecasts for
Seller and Buyer provided to us by its respective managements, upon Seller's
management advice and with your consent we have assumed for purposes of our
opinion that the forecasts and estimates have been reasonably prepared on bases
reflecting the best available estimates and judgments of Seller's management and
publicly available information for Buyer at the time of preparation as to the
future financial performance of Seller and Buyer. We have also assumed that
there have been no material changes in Seller's or Buyer'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 Seller as to all legal matters with respect to Seller, the
Merger and the Merger Agreement. We have assumed that the Merger will be
consummated in a manner that complies in all respects with the applicable
provisions of the Securities Act of 1933, as amended (the "Securities Act"), the
Securities Exchange Act of 1934 and all other applicable federal and state
statutes, rules and regulations. In addition, we have not assumed responsibility
for reviewing and individual credit files, or making an independent evaluation,
appraisal or physical inspection of any of the assets or liabilities (contingent
or otherwise) of Seller or Buyer, nor have we been furnished with any such
appraisals. We are not experts in the evaluation of loan portfolios for purposes
of assessing the adequacy of the allowances for losses with respect thereto and
have assumed, with your consent, that such allowances for each of Seller and
Buyer are in the aggregate adequate to cover such losses. You have informed us,
and we have assumed, that the Merger will be recorded as a purchase under
generally accepted accounting principles. Finally, our opinion is based on
economic, monetary and market and other condition as in effect on, and the
information made available to us as of, the date hereof. Accordingly, although
subsequent developments may affect this opinion, we have not assumed any
obligation to update, revise or reaffirm this opinion.

We have further assumed with your consent that the Merger will be consummated in
accordance with the terms described in the Merger Agreement without any further
amendments thereto, and without waiver by Seller of any of the conditions to its
obligations thereunder. We have also assumed that in the course of obtaining the
necessary regulatory approvals for the Merger, no restriction will be imposed
that could have a meaningful effect on the contemplated benefits of the Merger
to the Seller or Buyer.



                                      E-2
<PAGE>   186

Board of Directors
WesterFed Financial Corporation
September 20, 2000
Page 3 of 3

We have acted as financial advisor to Seller in connection with the Merger and
will receive a fee for our services, including rendering this opinion, a
significant portion of which is contingent upon the consummation of the Merger.

Based upon the foregoing and in reliance thereon, it is our opinion as
investment bankers that the Consideration to be received by the shareholders of
Seller pursuant to the Merger is fair to such shareholders from a financial
point of view, as of the date hereof.

We are not expressing an opinion regarding the price at which the Buyer Common
Stock may trade at any future time after the date of this letter. The
Consideration to be received by the shareholders of Seller pursuant to the
Merger is subject to certain adjustments as more fully described in the Merger
Agreement, and, accordingly, the market value of the Consideration may vary
significantly.

This opinion is directed to the Board of Directors of Seller in its
consideration of the Merger and is not a recommendation to any shareholder as to
how such shareholder should vote with respect to the Merger. Further, this
opinion does not address the relative merits of the Merger and any alternatives
to the Merger, Seller's underlying decision to proceed with or effect the
Merger, or any other aspect of the Merger. This opinion may not be used or
referred to by Seller, or quoted or disclosed to any person in any manner,
without our prior written consent, which consent is hereby given to the
inclusion of this opinion in a joint proxy statement/prospectus filed with the
Securities and Exchange Commission in connection with the Merger. In furnishing
this opinion, we do not think that we are experts within the meaning of the term
"experts" as used in the Securities Act and the rules and regulations
promulgated thereunder, nor do we admit that this opinion constitutes a report
or valuation within the meaning of Section 11 of the Securities Act.



Very truly yours,

/s/ Putnam Lovell Securities Inc.

Putnam Lovell Securities Inc.



                                      E-3
<PAGE>   187


                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 20. INDEMNIFICATION OF DIRECTORS AND OFFICERS

        Section 145 of the DGCL provides that a corporation may indemnify
directors and officers as well as other employees and individuals against
expenses (including attorneys' fees), judgments, fines and amounts paid in
settlement in connection with specified actions, suits or proceedings, whether
civil, criminal, administrative or investigative (other than an action by or in
the right of the corporation--a "derivative action"), if they acted in good
faith and in a manner they reasonably believed to be in, or not opposed to, the
best interests of the corporation, and, with respect to any criminal action or
proceeding, had no reasonable cause to believe their conduct was unlawful. A
similar standard is applicable in the case of derivative actions, except that
indemnification only extends to expenses (including attorneys' fees) incurred in
connection with the defense or settlement of such actions, and the statute
requires court approval before there can be any indemnification where the person
seeking indemnification has been found liable to the corporation. The statute
provides that it is not exclusive of other indemnification that may be granted
by a corporation's charter, bylaws, disinterested director vote, stockholder
vote, agreement or otherwise.

        Article VI of Glacier's Bylaws requires the indemnification of any
person made or threatened to be made party to any threatened, pending or
completed action, suit or proceeding, whether civil, criminal, administrative or
investigative, by reason of the fact that such person is or was a director,
officer or employee of the Registrant or any predecessor of the Registrant, or
is or was serving at the request of the Registrant or any predecessor of the
Registrant as a director, officer or employee of another corporation,
partnership, joint venture, trust or other enterprise, against expenses
(including attorneys' fees), judgments, fines, excise taxes and amounts paid in
settlement in connection with such action, suit or proceeding to the fullest
extent authorized under Section 145 of the DGCL; provided however, that the
Registrant will not be liable for any amounts due in connection with a
settlement of any action, suit or proceeding effected without the Registrant's
prior written consent, or any action, suit or proceeding initiated by any person
seeking indemnification pursuant to the Bylaws without the prior written consent
of the Registrant.

        Section 102(b)(7) of the DGCL permits a corporation to provide in its
certificate of incorporation that a director of the corporation shall not be
personally liable to the corporation or its stockholders for monetary damages
for breach of fiduciary duty as a director, except for liability for (i) any
breach of the director's duty of loyalty to the corporation or its stockholders,
(ii) acts or omissions not in good faith or which involve intentional misconduct
or a knowing violation of law, (iii) payments of unlawful dividends or unlawful
stock repurchases or redemptions, or (iv) any transaction from which the
director derived an improper personal benefit.

        Article 8 of Glacier's Certificate of Incorporation provides that the
personal liability of the Registrant's directors and officers for monetary
damages shall be eliminated to the fullest extent permitted by the DGCL as it
exists or may thereafter be in effect. Any amendment to, modification or repeal
of such Article 8 shall not adversely affect the rights provided thereby with
respect to any claim, issue or matter in any proceeding that is based in any
respect on any alleged action or failure to act prior to any such amendment,
modification or repeal.

ITEM 21. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

        (a) The exhibits are listed on the accompanying "Exhibit Index".

        (b) Financial Statement Schedules. None.

        (c) The opinions of financial advisors are set forth as APPENDIX D and
APPENDIX E to this prospectus/joint proxy statement
                                      II-1
<PAGE>   188

ITEM 22. UNDERTAKINGS

        (a) The undersigned registrant hereby undertakes:

               (1) To file, during any period in which it offers or sells
securities, a post-effective amendment to this registration statement to;

                      (i) Include any prospectus required by Section 10(a)(3) of
the 1933 Act;

                      (ii) Reflect in the prospectus any facts or events which,
individually or together, represent a fundamental change in the information in
the registration statement. Notwithstanding the foregoing, any increase or
decrease in volume of securities offered (if the total dollar value of
securities offered would not exceed that which was registered) and any deviation
from the low or high end of the estimated maximum offering range may be
reflected in the form of prospectus filed with the SEC pursuant to Rule 424(b)
if, in the aggregate, the changes in volume and price represent no more than a
20% change in the maximum aggregate offering price set forth in the "Calculation
of Registration Fee" table in the effective registration statement; and

                      (iii) Include any additional or changed information on the
plan of distribution;

               (2) For determining liability under the 1933 Act, to treat each
such post-effective amendment as a new registration statement of the securities
offered, and the offering of the securities at that time shall be deemed to be
the initial bona fide offering.

               (3) To file a post-effective amendment to remove from
registration any of the securities that remain unsold at the end of the
offering.

        (b) To advise all directors and officers that insofar as indemnification
for liabilities arising under the 1933 Act may be permitted to directors,
officers and controlling persons of the registrant pursuant to the foregoing
provisions, or otherwise, the registrant has been advised that in the opinion of
the SEC such indemnification is against public policy as expressed in the Act
and is, therefore, unenforceable.

        (c) The undersigned registrant hereby undertakes to respond to requests
for information that is incorporated by reference into the prospectus pursuant
to Item 4, 10(b), 11, or 13 of this form, within one business day of receipt of
such request, and to send the incorporated documents by first class mail or
other equally prompt means. This includes information contained in documents
filed subsequent to the Effective Date of the registration statement through the
date of responding to the request.

        (d) The undersigned registrant hereby undertakes to supply by means of a
post-effective amendment all information concerning a transaction, and the
company being acquired involved therein, that was not the subject of and
included in the registration statement when it became effective.

                                      II-2
<PAGE>   189

                                   SIGNATURES

        Pursuant to the requirements of the 1933 Act, the Registrant has duly
caused this Registration Statement to be signed on its behalf by the
undersigned, thereunto duly authorized, in the City of Kalispell, State of
Montana on December 18, 2000.

                                       GLACIER BANCORP, INC.

                                       By:/s/ Michael J. Blodnick
                                          -------------------------------------
                                             Michael J. Blodnick, President and
                                             Chief Executive Officer


                                POWER OF ATTORNEY

        Each person whose individual signature appears below hereby authorizes
and appoints John S. MacMillan, Michael J. Blodnick and James H. Strosahl, and
each of them, with full power of substitution and full power to act without the
other, as his true and lawful attorney-in-fact and agent to act in his name,
place and stead and to execute in the name and on behalf of each person,
individually and in each capacity stated below, and to file any and all
amendments to this Registration Statement, including any and all post-effective
amendments.

        Pursuant to the requirements of the 1933 Act, this Registration
Statement has been signed by the following persons in the capacities indicated,
on December 18, 2000.

                                      SIGNATURE AND TITLE



                                      By:/s/ Michael J. Blodnick
                                         ---------------------------------------
                                            Michael J. Blodnick, President
                                            and Chief Executive Officer and
                                            Director
                                           (Principal Executive Officer)



                                      By:/s/ James H. Strosahl
                                         ---------------------------------------
                                            James H. Strosahl, Chief
                                            Financial Officer
                                            (Principal Financial and
                                            Accounting Officer)



                                      By:/s/ John S. MacMillan
                                         ---------------------------------------
                                            John S. MacMillan, Chairman of
                                            the Board and Director



                                      By:/s/ William L. Bouchee
                                         ---------------------------------------
                                            William L. Bouchee, Director

                                      II-3

<PAGE>   190


                                      By:/s/ Fred J. Flanders
                                         ---------------------------------------
                                            Fred J. Flanders, Director



                                      By:/s/ Allen J. Fetscher
                                         ---------------------------------------
                                            Allen J. Fetscher, Director



                                      By:/s/ Jon W. Hippler
                                         ---------------------------------------
                                            Jon W. Hippler, Director



                                      By:/s/ L. Peter Larson
                                         ---------------------------------------
                                            L. Peter Larson, Director



                                      By:/s/ F. Charles Mercord
                                         ---------------------------------------
                                            F. Charles Mercord, Director



                                      By:/s/ Everit A. Sliter
                                         ---------------------------------------
                                            Everit A. Sliter, Director



                                      By:/s/ Harold A. Tutvedt
                                         ---------------------------------------
                                            Harold A. Tutvedt, Director

                                      II-4



<PAGE>   191

<TABLE>
<CAPTION>

                                  EXHIBIT INDEX


Exhibit No.   Description of Exhibit
-----------   ----------------------
<S>           <C>
2.1           Amended and Restated Plan and Agreement of Merger between Glacier and WesterFed dated
              as of September 20, 2000 (included in this Registration Statement as APPENDIX A to the
              prospectus/joint proxy statement).

3.1           Amended and Restated Certificate of Incorporation(1)

3.3           Amended and Restated Bylaws(2)

5.1           Opinion of Graham & Dunn, P.C. as to the legality of securities.

8.1           Opinion of Graham & Dunn, P.C. as to federal income tax consequences of the merger.

8.2           Opinion of Silver, Freedman & Taff, L.L.P., as to federal income tax consequences of
              merger.

10.1          Stock Option Agreement between Glacier and WesterFed dated as of September 20, 2000
              (included in this Registration Statement as APPENDIX C to the prospectus/joint proxy
              statement).

10.2          Stockholder Agreement between Glacier and certain stockholders named therein, dated as
              of September 20, 2000.

10.3          Stockholder Agreement between WesterFed and certain stockholders named therein, dated
              as of September 20, 2000.

10.4          Employment Agreement among Glacier, Western Security Bank and Ralph K. Holliday, dated
              as of September 20, 2000, effective as of merger effective date.

23.1          Consent of Graham & Dunn, P.C. (contained in its opinion filed as Exhibit 5.1).

23.2          Consent of Graham & Dunn, P.C. as to its tax opinion (contained in its opinion filed as
              Exhibit 8.1).
23.3          Consent of Silver, Freedman & Taff, L.L.P. as to its tax opinion (contained in its
              opinion filed as Exhibit 8.2).

23.4          Consent of KPMG LLP, as Glacier's independent accountants.

23.5          Consent of KPMG LLP, as WesterFed's independent accountants.

23.6          Consent of PricewaterhouseCoopers LLP, as independent accountants of Mountain West Bank.

23.7          Consent of D.A. Davidson & Co. to Glacier fairness opinion (contained in its opinion
              filed as Exhibit 99.1).

23.8          Consent of Putnam Lovell Securities, Inc. with respect to WesterFed fairness opinion
              (contained in its opinion filed as Exhibit 99.2).

24.1          Power of Attorney (included as part of the signature pages).
</TABLE>


                                      II-5

<PAGE>   192
<TABLE>
<CAPTION>


Exhibit No.   Description of Exhibit
-----------   ----------------------
<S>           <C>
99.1          Form of opinion of D.A. Davidson & Co. to Glacier (included as APPENDIX D to the
              prospectus/joint proxy statement).

99.2          Form of opinion of Putnam Lovell Securities, Inc. to WesterFed (included as APPENDIX E
              to the prospectus/joint proxy statement).

99.3          Form of proxy to be mailed to stockholders of Glacier.

99.4          Form of proxy to be mailed to stockholders of WesterFed.

99.5          Form of Election and Letter of Transmittal to be mailed to the stockholders of
              WesterFed.

99.6          Rule 438 Consent of Ralph K. Holliday.

(1)     Incorporated by reference to Exhibit 3.2 of the September 30, 2000 Quarterly
        Report filed by the Registrant on Form 10-Q

(2)     Incorporated by reference to Exhibit 3(b) of the Annual Report for December 31,
        1998 on Form 10-K filed by the Registrant
</TABLE>





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