# Columbia Banking System, Inc.: Form 8-K, filed Nov 21, 2025

- Company: [Columbia Banking System, Inc.](/companies/colb.md) (CIK 887343)
- Form: 8-K
- Filed: 2025-11-21
- Accepted by EDGAR: Nov 21, 2025, 08:45 ET
- Period: 2025-11-19
- Accession: 0001193125-25-290691
- Inline XBRL: yes
- Main document: https://www.sec.gov/Archives/edgar/data/887343/000119312525290691/d90471d8k.htm
- All documents and exhibits: https://www.sec.gov/Archives/edgar/data/887343/000119312525290691/

## Items reported

- Item 5.02: Departure or appointment of officers or directors

## 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/887343/000119312525290691/d90471d8k.htm

Filed Nov 21, 2025.
Source: SEC EDGAR, the filing index for accession 0001193125-25-290691. Last ingested by Listed: Nov 5, 2026, 19:04 ET. No prices; not investment advice.