FIRST INTERSTATE BANCSYSTEM INC

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Beneficial ownership report for a passive holder of more than 5% (Schedule 13G)

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Automatic Shelf Registration

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Preliminary Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Results of Operations and Financial Condition

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Regulation FD Disclosure

Regulation FD Disclosure

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

Other Events

Termination of a Material Definitive Agreement

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers

General form for quarterly reports under Section 13 or 15(d)

Results of Operations and Financial Condition

Prospectus Supplement for Primary Offering

No description available

Prospectus Supplement for Primary Offering

Free Writing Prospectus

Free Writing Prospectus

Additional Information for Proxy Statement/ Votes

General form for quarterly reports under Section 13 or 15(d)

Annual Report Scanned (Paper)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Additional Information for Proxy Statement/ Votes

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Annual report pursuant to Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Automatic Shelf Registration

Registration of Securities on Exchange (amendment)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Additional Information for Proxy Statement/ Votes

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Annual Report Scanned (Paper)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Preliminary Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Post Effective Amendment to S-8

Post Effective Amendment to S-8

General form for quarterly reports under Section 13 or 15(d)

General form for quarterly reports under Section 13 or 15(d)

Certification of termination of registration of a class of securities (Section 12(g))

Registration of Securities on Exchange (amendment)

General form for quarterly reports under Section 13 or 15(d)

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Annual report pursuant to Section 13 or 15(d)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Prospectus Supplement for Primary Offering

Notice of Effectiveness

Correspondence with the SEC

Registration statement under Securities Act of 1933 (amendment)

Letter from the SEC

General form for quarterly reports under Section 13 or 15(d)

Registration statement under Securities Act of 1933

Written communication about a business combination transaction (Rule 425)

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

No description available

Additional Information for Proxy Statement/ Votes

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Shepler Christopher L.

Lee Jeffery D.

Julie A Scott Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-2002; SCOTT JULIE A; IXL Ltd Liability Co; Elizabeth Lauren Scott Rose Trust; Juliana Sarah Scott Rose Trust

Lee Jeffery D.

Harper Grace Scott Trust; Scott Jonathan R; Harrison William Scott Trust; IXL Ltd Liability Co; Holland Elizabeth Scott Trust; Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04

Harper Grace Scott Trust; Scott Jonathan R; Harrison William Scott Trust; IXL Ltd Liability Co; Holland Elizabeth Scott Trust; Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04

Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04

Julie A Scott Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-2002; SCOTT JULIE A; IXL Ltd Liability Co; Elizabeth Lauren Scott Rose Trust; Juliana Sarah Scott Rose Trust

TURNER BRIAN KEVIN

Ritter Matthew John

Ritter Matthew John

TURNER BRIAN KEVIN

Harper Grace Scott Trust; Scott Jonathan R; Harrison William Scott Trust; IXL Ltd Liability Co; Holland Elizabeth Scott Trust; Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04

Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04

Julie A Scott Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-2002

Julie A Scott Rose Trustee of the Julie A Scott Rose Trust Dated 5-14-2002; SCOTT JULIE A; IXL Ltd Liability Co; Elizabeth Lauren Scott Rose Trust; Juliana Sarah Scott Rose Trust

Harper Grace Scott Trust; Scott Jonathan R; Harrison William Scott Trust; IXL Ltd Liability Co; Holland Elizabeth Scott Trust; Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04

Harper Grace Scott Trust; Scott Jonathan R; Harrison William Scott Trust; IXL Ltd Liability Co; Holland Elizabeth Scott Trust; Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04

Jonathan Scott as Trustee of the Jonathan R Scott Trust Dated as of 4/21/04