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 101-125 of 1,000 matching filings.

Per page
25
Current page
5
3

FORM 3

Filing date
21 Aug 2025
Reporting date
13 Aug 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
18 Aug 2025
Reporting date
14 Aug 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
144 File 001-34653

144 filing

Filing date
14 Aug 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
SCHEDULE 13G/A File 005-78756

SCHEDULE 13G/A filing

Filing date
06 Aug 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
01 Aug 2025
Reporting date
01 Aug 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
5

5 filing

Filing date
18 Jul 2025
Reporting date
31 Dec 2024
SEC evidence
Open document Open filing
Next action
Verify source filing
4

4 filing

Filing date
15 Jul 2025
Reporting date
14 Jul 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
SCHEDULE 13G File 005-78756

SCHEDULE 13G filing

Filing date
15 Jul 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
144 File 001-34653

144 filing

Filing date
14 Jul 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
3/A

FORM 3/A

Filing date
05 Jun 2025
Reporting date
01 Jun 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
FWP File 333-272215

FWP

Filing date
05 Jun 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
305B2 File 333-272215

305B2

Filing date
05 Jun 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
FWP File 333-272215

FWP

Filing date
05 Jun 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
424B5 File 333-272215

424B5

Filing date
05 Jun 2025
Reporting date
Not listed
SEC evidence
Open document Open filing
Next action
Verify source filing
3

FORM 3

Filing date
04 Jun 2025
Reporting date
01 Jun 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
03 Jun 2025
Reporting date
01 Jun 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
4

FORM 4

Filing date
03 Jun 2025
Reporting date
01 Jun 2025
SEC evidence
Open document Open filing
Next action
Verify source filing
We use cookies and similar technologies to provide certain features, enhance the user experience and, if you allow them, measure engagement and deliver advertising. Analytics and marketing storage stay off until you grant consent. By clicking on "Agree and continue", you declare your consent to the use of the selected optional cookies. Manage preferences to update or revoke optional consent for future visits. For more information, see our Privacy Policy .