Document:

<PAGE>   1

                                                                    EXHIBIT 10.2

                              SHAREHOLDER AGREEMENT
                             (Glacier Bancorp, Inc.)

       This Shareholder Agreement ("Shareholder Agreement"), dated as of
September 20, 2000, is between GLACIER BANCORP. INC. ("Glacier"), and the
undersigned, who are Shareholders and Directors and/or Executive Officers (the
"Shareholders") of Glacier.

                                    RECITALS

A.     Glacier and WesterFed Financial Corporation ("WesterFed") have entered
       into a Plan and Agreement of Merger (the "Plan"), dated as of September
       20, 2000, under which all the outstanding shares of WesterFed common
       stock will be exchanged for shares of Glacier common stock and/or cash,
       and WesterFed will merge with and into Glacier (the "Merger").

B.     The Shareholders beneficially own with power to vote or direct the voting
       of the shares of Glacier common stock identified on Annex 1 to this
       Shareholder Agreement (such shares, together will all shares of Glacier
       common stock subsequently acquired during the term of this Shareholder
       Agreement, being referred to as the "Shares").

C.     The obligation of Glacier and WesterFed to consummate the transactions
       contemplated by the Plan are conditioned on their receipt of voting
       agreements from all Shareholders of Glacier.

                                    AGREEMENT

       In consideration of Glacier's and WesterFed's performance under the Plan,
the Shareholders agree as follows:

       1. Agreement to Vote Shares. The Shareholders shall vote or cause to be
voted, or execute a written consent with respect to, the Shares in favor of
adoption and approval of the Plan and the Merger and all transactions relating
thereto at every meeting of the shareholders of Glacier at which such matters
are considered and at every adjournment thereof and in connection with every
proposal to take action by written consent with respect to the Merger.

       2. No Voting Trusts. The Shareholders agree that the Shareholders will
not, nor will the Shareholders permit any entity under the Shareholders' control
to, deposit any Shares in a voting trust or subject the Shares to any agreement,
arrangement or understanding with respect to the voting of the Shares
inconsistent with this Shareholder Agreement.

                                       1
<PAGE>   2

       3. Limitation on Sales. During the term of this Shareholder Agreement,
the Shareholders agree not to sell, assign, transfer or otherwise dispose of any
of the Shares.

       4. Representations and Warranties of Shareholder. Each Shareholder
represents and warrants as follows:

              a. Capacity. The Shareholder has all requisite capacity and
       authority to enter into and perform his or her obligations under this
       Shareholder Agreement.

              b. Binding Agreement. This Shareholder Agreement constitutes the
       valid and legally binding obligation of the Shareholder, subject to
       bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium
       and similar laws of general applicability relating to or affecting
       creditors' rights and to general equity principles.

              c. Non-Contravention. The execution and delivery of this
       Shareholder Agreement by the Shareholder does not, and the performance by
       the Shareholder of his or her obligations hereunder and the consummation
       by the Shareholder of the transactions contemplated hereby will not
       violate, or conflict with, or constitute a default under, any agreement,
       instrument, contract or other obligation or any order, arbitration award,
       judgment or decree to which the Shareholder is a party or by which the
       Shareholder is bound, or any statute, rule or regulation to which the
       Shareholder is subject.

              d. Ownership of Shares. Annex 1 to this Shareholder Agreement
       correctly sets forth, as of the date of this Shareholder Agreement, the
       number of shares of Glacier common stock owned beneficially and of record
       by the Shareholder. The Shareholder has good title to all of the Shares
       indicated as owned by the Shareholder in the capacity set forth on Annex
       1, and such Shares are so owned free and clear of any liens, security
       interests, charges or other encumbrances.

       5. Term of Agreement; Termination. The term of this Shareholder Agreement
shall commence on the date hereof, and such term and this Shareholder Agreement
shall terminate upon the earlier to occur of (i) the Effective Date (as defined
in the Plan) or (ii) the date on which the Plan is terminated in accordance with
its terms. Upon such termination, no party shall have any further obligations or
liabilities hereunder; provided, however, such termination shall not relieve any
party from liability for any breach of this Shareholder Agreement prior to such
termination.

                                       2
<PAGE>   3

6.     Miscellaneous.

              a. Severability. If any provision of this Shareholder Agreement or
       the application of such provision to any person or circumstances is held
       invalid or unenforceable by a court of competent jurisdiction, such
       provision or application will be unenforceable only to the extent of such
       invalidity or unenforceability, and the remainder of the provision held
       invalid or unenforceable and the application of such provision to persons
       or circumstances, other than the party as to which it is held invalid,
       and the remainder of this Shareholder Agreement, will not be affected.

              b. Capacity. The covenants contained herein apply to the each
       Shareholder solely in his or her capacity as a shareholder of Glacier,
       and no covenant contained herein applies to the Shareholder in his or her
       capacity as a director of such company.

              c. Counterparts. This Shareholder Agreement may be executed in one
       or more counterparts, each of which will be deemed to be an original but
       all of which together will constitute one and the same instrument.

              d. Governing Law. This Shareholder Agreement is deemed a contract
       made under, and for all purposes will be construed in accordance with,
       the laws of the State of Montana.

              e. Remedies. Any breach of this Shareholder Agreement entitles
       Glacier and WesterFed to injunctive relief and/or specific performance,
       as well as any other legal or equitable remedies to which they may be
       entitled.

                    [SIGNATURES APPEAR ON THE FOLLOWING PAGE]

                                       3
<PAGE>   4

SIGNED as of September 20, 2000:

SHAREHOLDER:

  /s/ F. Charles Mercord                /s/ Jon W. Hippler
---------------------------------       ----------------------------------------

  /s/ Allen J. Fetscher                 /s/ Fred J. Flanders
---------------------------------       ----------------------------------------

  /s/ L. Peter Larson
---------------------------------       ----------------------------------------

  /s/ John S. MacMillan
---------------------------------       ----------------------------------------

  /s/ Everit A. Sliter
---------------------------------       ----------------------------------------

  /s/ Michael J. Blodnick
---------------------------------       ----------------------------------------

  /s/ James H. Strosahl
---------------------------------       ----------------------------------------

  /s/ William L. Bouchee
---------------------------------       ----------------------------------------

GLACIER BANCORP, INC.

By:  /s/ Michael J. Blodnick
    -----------------------------
     Its: President and CEO

                                       4
<PAGE>   5

                                     ANNEX 1

      BLODNICK                      :
------------------------------------

Number of Shares of Glacier
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                        136,297
                                                              ------------------

      BOUCHEE                       :
------------------------------------

Number of Shares of Glacier
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       193,091
                                                              ------------------

      FETSCHER                      :
------------------------------------

Number of Shares of Glacier Common Stock
        Beneficially Owned, as of September 20,
        2000 (including shares issuable upon
        exercise of options or warrants that are
        exercisable within sixty (60) days of
        the date hereof):                                        185,321
                                                              ------------------

      FLANDERS                      :
------------------------------------

Number of Shares of Glacier Common Stock
        Beneficially Owned, as of September 20,
        2000 (including shares issuable upon
        exercise of options or warrants that are
        exercisable within sixty (60) days of
        the date hereof):                                         22,936
                                                              ------------------

                                       5
<PAGE>   6

      HIPPLER                       :
------------------------------------

Number of Shares of Glacier Common Stock
        Beneficially Owned, as of September 20,
        2000 (including shares issuable upon
        exercise of options or warrants that are
        exercisable within sixty (60) days of the
        date hereof):                                              40,843
                                                              ------------------

      LARSON                        :
------------------------------------

Number of Shares of Glacier Common Stock
        Beneficially Owned, as of September 20,
        2000 (including shares issuable upon
        exercise of options or warrants that are
        exercisable within sixty (60) days of the
        date hereof):                                             321,192
                                                              ------------------

      MACMILLAN                     :
------------------------------------

Number of Shares of Glacier Common Stock
        Beneficially Owned, as of September 20,
        2000 (including shares issuable upon
        exercise of options or warrants that are
        exercisable within sixty (60) days of the
        date hereof):                                             206,067
                                                              ------------------

      MERCORD                       :
------------------------------------

Number of Shares of Glacier Common Stock
        Beneficially Owned, as of September 20,
        2000 (including shares issuable upon
        exercise of options or warrants that are
        exercisable within sixty (60) days of the
        date hereof):                                             171,641
                                                              ------------------

                                       6
<PAGE>   7

      SLITER                        :
------------------------------------

Number of Shares of Glacier Common Stock
        Beneficially Owned, as of September 20,
        2000 (including shares issuable upon
        exercise of options or warrants that are
        exercisable within sixty (60) days of the
        date hereof):                                             181,235
                                                              ------------------

      TUTVEDT                       :
------------------------------------

Number of Shares of Glacier Common Stock
        Beneficially Owned, as of September 20,
        2000 (including shares issuable upon
        exercise of options or warrants that are
        exercisable within sixty (60) days of the
        date hereof):                                             136,610
                                                              ------------------

                                    :
------------------------------------

Number of Shares of Glacier Common Stock
        Beneficially Owned, as of September 20,
        2000 (including shares issuable upon
        exercise of options or warrants that are
        exercisable within sixty (60) days of the
        date hereof):                                         ------------------

      STROSAHL                      :
------------------------------------

Number of Shares of Glacier Common Stock
        Beneficially Owned, as of September 20,
        2000 (including shares issuable upon
        exercise of options or warrants that are
        exercisable within sixty (60) days of the
        date hereof):                                              46,604
                                                              ------------------

                                       7<PAGE>   1

                                                                    EXHIBIT 10.3

                              SHAREHOLDER AGREEMENT
                        (WesterFed Financial Corporation)

       This Shareholder Agreement ("Shareholder Agreement"), dated as of
September 20, 2000, is between WESTERFED FINANCIAL CORPORATION ("WesterFed"),
and the undersigned, who are Shareholders and Directors and/or Executive
Officers (the "Shareholders") of WesterFed.

                                    RECITALS

A.     WesterFed and Glacier Bancorp, Inc. ("Glacier") have entered into a Plan
       and Agreement of Merger (the "Plan"), dated as of September 20, 2000,
       under which all the outstanding shares of WesterFed common stock will be
       exchanged for common stock shares of Glacier and/or cash, and WesterFed
       will merge with and into Glacier (the "Merger").

B.     The Shareholders beneficially own with power to vote or direct the voting
       of the shares of WesterFed Common stock identified on Annex 1 to this
       Shareholder Agreement (such shares, together will all shares of WesterFed
       common stock subsequently acquired during the term of this Shareholder
       Agreement, being referred to as the "Shares").

C.     The obligation of WesterFed and Glacier to consummate the transactions
       contemplated by the Plan are conditioned on their receipt of voting
       agreements from all Shareholders of WesterFed.

                                    AGREEMENT

       In consideration of Glacier's and WesterFed's performance under the Plan,
the Shareholders agree as follows:

       1. Agreement to Vote Shares. The Shareholders shall vote or cause to be
voted, or execute a written consent with respect to, the Shares in favor of
adoption and approval of the Plan and the Merger and all transactions relating
thereto at every meeting of the shareholders of WesterFed at which such matters
are considered and at every adjournment thereof and in connection with every
proposal to take action by written consent with respect to the Merger.

       2. No Voting Trusts. The Shareholders agree that the Shareholders will
not, nor will the Shareholders permit any entity under the Shareholders' control
to, deposit any Shares in a voting trust or subject the Shares to any agreement,
arrangement or understanding with respect to the voting of the Shares
inconsistent with this Shareholder Agreement.

<PAGE>   2

       3. Limitation on Sales. During the term of this Shareholder Agreement,
the Shareholders agree not to sell, assign, transfer or otherwise dispose of any
of the Shares.

       4. Representations and Warranties of Shareholder. Each Shareholder
represents and warrants as follows:

              a. Capacity. The Shareholder has all requisite capacity and
       authority to enter into and perform his or her obligations under this
       Shareholder Agreement.

              b. Binding Agreement. This Shareholder Agreement constitutes the
       valid and legally binding obligation of the Shareholder, subject to
       bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium
       and similar laws of general applicability relating to or affecting
       creditors' rights and to general equity principles.

              c. Non-Contravention. The execution and delivery of this
       Shareholder Agreement by the Shareholder does not, and the performance by
       the Shareholder of his or her obligations hereunder and the consummation
       by the Shareholder of the transactions contemplated hereby will not
       violate, or conflict with, or constitute a default under, any agreement,
       instrument, contract or other obligation or any order, arbitration award,
       judgment or decree to which the Shareholder is a party or by which the
       Shareholder is bound, or any statute, rule or regulation to which the
       Shareholder is subject.

              d. Ownership of Shares. Annex 1 to this Shareholder Agreement
       correctly sets forth, as of the date of this Shareholder Agreement, the
       number of shares of WesterFed Common Stock owned beneficially and of
       record by the Shareholder. The Shareholder has good title to all of the
       Shares indicated as owned by the Shareholder in the capacity set forth on
       Annex 1, and such Shares are so owned free and clear of any liens,
       security interests, charges or other encumbrances.

       5. Term of Agreement; Termination. The term of this Shareholder Agreement
shall commence on the date hereof, and such term and this Shareholder Agreement
shall terminate upon the earlier to occur of (i) the Effective Date (as defined
in the Plan) or (ii) the date on which the Plan is terminated in accordance with
its terms. Upon such termination, no party shall have any further obligations or
liabilities hereunder; provided, however, such termination shall not relieve any
party from liability for any breach of this Shareholder Agreement prior to such
termination.

<PAGE>   3

6.     Miscellaneous.

              a. Severability. If any provision of this Shareholder Agreement or
       the application of such provision to any person or circumstances is held
       invalid or unenforceable by a court of competent jurisdiction, such
       provision or application will be unenforceable only to the extent of such
       invalidity or unenforceability, and the remainder of the provision held
       invalid or unenforceable and the application of such provision to persons
       or circumstances, other than the party as to which it is held invalid,
       and the remainder of this Shareholder Agreement, will not be affected.

              b. Capacity. The covenants contained herein apply to the each
       Shareholder solely in his or her capacity as a shareholder of WesterFed,
       and no covenant contained herein applies to the Shareholder in his or her
       capacity as a director of such company.

              c. Counterparts. This Shareholder Agreement may be executed in one
       or more counterparts, each of which will be deemed to be an original but
       all of which together will constitute one and the same instrument.

              d. Governing Law. This Shareholder Agreement is deemed a contract
       made under, and for all purposes will be construed in accordance with,
       the laws of the State of Montana.

              e. Remedies. Any breach of this Shareholder Agreement entitles
       WesterFed and Glacier to injunctive relief and/or specific performance,
       as well as any other legal or equitable remedies to which they may be
       entitled.

                    [SIGNATURES APPEAR ON THE FOLLOWING PAGE]

<PAGE>   4

SIGNED as of September 20, 2000:

SHAREHOLDER:

/s/ Laurie C. DeMarois                  /s/ John E. Roemer
-------------------------------         ----------------------------------------

/s/ Lyle R. Grimes                      /s/ Otto G. Klein Jr.
-------------------------------         ----------------------------------------

/s/ Marvin Reynolds
-------------------------------         ----------------------------------------

/s/ Robert F. Burke
-------------------------------         ----------------------------------------

/s/ Marcia L. Johnson
-------------------------------         ----------------------------------------

/s/ James A. Salisbury
-------------------------------         ----------------------------------------

/s/ Charles Eiseman
-------------------------------         ----------------------------------------

/s/ Suzanne Loewen
-------------------------------

WESTERFED FINANCIAL CORPORATION

By:  /s/ Ralph Holliday
    -----------------------------
     Its: President and CEO
         ------------------------

<PAGE>   5

                                     ANNEX 1

      MARVIN REYNOLDS             :
----------------------------------
Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       29,526
                                                             -------------------

      ROBERT F. BURKE             :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       4,668
                                                             -------------------

      LAURIE DeMAROIS             :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       2,439
                                                             -------------------

      OTTO G. KLEIN JR.           :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       33,282
                                                             -------------------

<PAGE>   6

      JOHN ROEMER                 :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       20,035
                                                             -------------------

      CHARLES EISEMAN             :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       26,604
                                                             -------------------

      JAMES SALISBURY             :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       23,623
                                                             -------------------

      MARCIA JOHNSON              :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       4,548
                                                             -------------------

<PAGE>   7

      JOHN CROMWELL               :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       715
                                                             -------------------

      SUZANNE LOEWEN              :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       1,578
                                                             -------------------

      LYLE GRIMES                 :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       74,216
                                                             -------------------

      RALPH HOLLIDAY              :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       -0-
                                                             -------------------

<PAGE>   8

      BARRY JOHNSTON              :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):                       -0-
                                                             -------------------

                                  :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):
                                                             -------------------

                                  :
----------------------------------

Number of Shares of WesterFed
       Common Stock Beneficially Owned,
       as of September 20, 2000 (including shares
       issuable upon exercise of options or
       warrants that are exercisable within
       sixty (60) days of the date hereof):
                                                             -------------------

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