Company facts
- Industry
- State Commercial Banks
- Headquarters
- Billings, Montana
- Most recent report
- 10-Q, filed Nov 2, 2026
- Incorporated
- Delaware
- Filings on record
- 1,002+ filings
- On EDGAR
- CIK 860413
- Fiscal year ends
- December
- Filer status
- Large accelerated filer
Financials 8 of 34
News 8 of 131
Prospectuses and Registrations 8 of 34
- S-3ASR Automatic shelf registration May 26, 2026
- 424B5 Prospectus supplement for an offering Jun 6, 2025
- FWP Free writing prospectus Jun 5, 2025
- FWP Free writing prospectus Jun 5, 2025
- 424B5 Prospectus supplement for an offering Jun 5, 2025
- S-8 Registration statement for an employee plan May 23, 2024
- S-3ASR Automatic shelf registration May 26, 2023
- S-8 Registration statement for an employee plan May 25, 2023
Proxies 8 of 23
- DEFA14A Extra proxy material Apr 16, 2026
- DEF 14A Proxy statement for a shareholder vote Apr 16, 2026
- PRE 14A Preliminary proxy statement Mar 31, 2026
- DEFA14A Extra proxy material May 16, 2025
- DEFA14A Extra proxy material Apr 8, 2025
- DEF 14A Proxy statement for a shareholder vote Apr 8, 2025
- DEFA14A Extra proxy material May 7, 2024
- DEFA14A Extra proxy material Apr 30, 2024
Ownership 8 of 739
- 144 Notice of a proposed sale of restricted stock Nov 9, 2026
- 4 Insider reported a trade Nov 3, 2026
- 144 Notice of a proposed sale of restricted stock Nov 2, 2026
- 144 Notice of a proposed sale of restricted stock Oct 30, 2026
- 4 Insider reported a trade Oct 26, 2026
- 4 Insider reported a trade Oct 23, 2026
- 144 Notice of a proposed sale of restricted stock Oct 22, 2026
- 4 Insider reported a trade Oct 6, 2026
Other 8 of 41
- ARS Annual report sent to shareholders Apr 16, 2026
- 305B2 Jun 5, 2025
- ARS Annual report sent to shareholders Apr 8, 2025
- ARS Annual report sent to shareholders Apr 11, 2024
- 8-A12B/A Registration of a security for exchange listing, amended May 25, 2023
- ARS Annual report sent to shareholders Apr 11, 2023
- 15-12G Jul 11, 2022
- 8-A12B/A Registration of a security for exchange listing, amended Jul 8, 2022
Everything here comes from First Interstate Bancsystem Inc's own filings on SEC EDGAR. The filing list is rechecked every hour.