# First Interstate Bancsystem Inc: Form 8-K, filed Oct 14, 2025

- Company: [First Interstate Bancsystem Inc](/companies/fibk.md) (CIK 860413)
- Form: 8-K
- Filed: 2025-10-14
- Accepted by EDGAR: Oct 14, 2025, 10:01 ET
- Period: 2025-10-10
- Accession: 0000860413-25-000152
- Inline XBRL: yes
- Main document: https://www.sec.gov/Archives/edgar/data/860413/000086041325000152/fibk-20251010.htm
- All documents and exhibits: https://www.sec.gov/Archives/edgar/data/860413/000086041325000152/

## Items reported

- Item 7.01: Regulation FD disclosure
- Item 9.01: Financial statements and exhibits

## Sections

Sections are extracted only from 10-K and 10-Q reports. Read this filing’s documents on sec.gov. https://www.sec.gov/Archives/edgar/data/860413/000086041325000152/fibk-20251010.htm

Filed Oct 14, 2025.
Source: SEC EDGAR, the filing index for accession 0000860413-25-000152. Last ingested by Listed: Nov 3, 2026, 14:55 ET. No prices; not investment advice.