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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON D.C. 20549

                                    FORM 8-K
                                 CURRENT REPORT


     PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934



    Date of report (date of earliest event reported):  May 25, 2001


                        FIRST INTERSTATE BANCSYSTEM, INC.
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             (Exact name of registrant as specified in its charter)



             MONTANA                    33-64304                  81-0331430
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(State or other jurisdiction of        (Commission             (IRS Employer
 incorporation or organization)         File No.)            Identification No.)


                       401 NORTH 31ST STREET, BILLINGS, MT
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                    (Address of principal executive offices)


                                 (406) 255-5390
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              (Registrant's telephone number, including area code)


                                 NOT APPLICABLE
          -------------------------------------------------------------
          (Former name or former address, if changed since last report)


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    Item 1.  Not Applicable.

    Item 2.  Not Applicable.

    Item 3.  Not Applicable.

    Item 4.  Changes in Registrant's Certifying Accountant.

             Effective May 25, 2001, First Interstate BancSystem, Inc. and
             subsidiaries (the "Company") informed its independent auditor,
             KPMG LLP, they were not reappointed as principal accountants. The
             Company's Board of Directors approved this action upon
             recommendation of the Company's Audit Committee.

             KPMG LLP's audit reports on the Company's consolidated financial
             statements as of and for the years ended December 31, 2000
             and 1999 did not contain an adverse opinion or a disclaimer of
             opinion, nor were they qualified or modified as to uncertainty,
             audit scope or accounting principles.

             In connection with the audits of the Company's consolidated
             financial statements for the two years ended December 31, 2000, and
             in the subsequent interim period through May 14, 2001, there were
             no disagreements with KPMG LLP on any matters of accounting
             principles or practices, financial statement disclosure, or audit
             scope or procedures which, if not resolved to the satisfaction of
             KPMG LLP, would have caused KPMG LLP to make reference to the
             matter in their report. A letter from KPMG LLP is attached as
             Exhibit 16.

    Item 5.  Not Applicable.

    Item 6.  Not Applicable.

    Item 7.  Financial Statements and Exhibits.

             (a)  Not Applicable.

             (b)  Not Applicable.

             (c)  Exhibits.  The following exhibit is attached hereto.

                  Exhibit 16. Letter from KPMG LLP dated June 1, 2001.

    Item 8.  Not Applicable.

    Item 9.  Not Applicable.




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                                    SIGNATURE

           Pursuant to the requirements of the Securities and Exchange Act of
    1934, as amended, the Registrant has duly caused this report to be signed on
    its behalf by the undersigned hereunto duly authorized.

    Dated:  June 1, 2001

                                       FIRST INTERSTATE BANCSYSTEM, INC.



                                       By:  /s/ THOMAS W. SCOTT
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                                                Thomas W. Scott
                                                Chief Executive Officer