FIRST INTERSTATE BANCSYSTEM INC reports

Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Billings, MT
SEC filing record 1 source field available
Fiscal year end
31 December
FIRST INTERSTATE BANCSYSTEM INC has filed 2,949 SEC EDGAR filings since 14 Jun 1996

SEC filing history

Showing 26-50 of 1,000 matching filings.

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25
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2
3

FORM 3

Filing date
29 Apr 2026
Reporting date
29 Apr 2026
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3

FORM 3

Filing date
28 Apr 2026
Reporting date
25 Apr 2026
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DEFA14A File 001-34653

DEFA14A

Filing date
16 Apr 2026
Reporting date
Not listed
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DEF 14A File 001-34653

DEF 14A

Filing date
16 Apr 2026
Reporting date
31 Dec 2025
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ARS File 001-34653

ARS

Filing date
16 Apr 2026
Reporting date
31 Dec 2025
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PRE 14A File 001-34653

PRE 14A

Filing date
31 Mar 2026
Reporting date
30 Mar 2026
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4

4

Filing date
27 Mar 2026
Reporting date
26 Mar 2026
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SCHEDULE 13G/A File 005-78756

SCHEDULE 13G/A filing

Filing date
26 Mar 2026
Reporting date
Not listed
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4

FORM 4

Filing date
18 Mar 2026
Reporting date
16 Mar 2026
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4

FORM 4

Filing date
18 Mar 2026
Reporting date
16 Mar 2026
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4

FORM 4

Filing date
18 Mar 2026
Reporting date
16 Mar 2026
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4

FORM 4

Filing date
18 Mar 2026
Reporting date
16 Mar 2026
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4

FORM 4

Filing date
18 Mar 2026
Reporting date
16 Mar 2026
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4

FORM 4

Filing date
17 Mar 2026
Reporting date
15 Mar 2026
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4

FORM 4

Filing date
17 Mar 2026
Reporting date
15 Mar 2026
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4

FORM 4

Filing date
17 Mar 2026
Reporting date
15 Mar 2026
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4

FORM 4

Filing date
17 Mar 2026
Reporting date
15 Mar 2026
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4

FORM 4

Filing date
17 Mar 2026
Reporting date
15 Mar 2026
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4

FORM 4

Filing date
17 Mar 2026
Reporting date
15 Mar 2026
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4

FORM 4

Filing date
17 Mar 2026
Reporting date
15 Mar 2026
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SCHEDULE 13G/A File 005-78756

SCHEDULE 13G/A filing

Filing date
05 Mar 2026
Reporting date
Not listed
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5

5

Filing date
18 Feb 2026
Reporting date
31 Dec 2025
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5

5

Filing date
17 Feb 2026
Reporting date
31 Dec 2025
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5

5

Filing date
17 Feb 2026
Reporting date
31 Dec 2025
SEC evidence
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Next action
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