Columbia Banking System, Inc. SEC filings COLB
Columbia Banking System, Inc. has 1,001 filings in SEC EDGAR's recent list, going back to May 26, 2017. Its latest annual report, Form ARS, was filed on Mar 31, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 27, 2026 (officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 30, 2026 | Oct 29, 2026 |
| 144 | Notice of proposed sale | Oct 29, 2026 | — |
| 4 | Insider transaction | Sep 15, 2026 | Sep 14, 2026 |
| 4 | Insider transaction | Sep 8, 2026 | Sep 4, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| 3 | Initial insider ownership | Sep 2, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Aug 18, 2026 | Aug 14, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| 4 | Insider transaction | Jul 2, 2026 | Jun 30, 2026 |
| 4 | Insider transaction | Jun 16, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 10, 2026 | Jun 8, 2026 |
| 144 | Notice of proposed sale | Jun 8, 2026 | — |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| 4 | Insider transaction | May 18, 2026 | May 14, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 29, 2026 | — |
| 4 | Insider transaction | Apr 16, 2026 | Apr 15, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 26, 2026 | — |
| 4/A | Form 4/a | Mar 20, 2026 | Mar 13, 2026 |
| 4/A | Form 4/a | Mar 20, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 13, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 144 | Notice of proposed sale | Mar 4, 2026 | — |
| 144 | Notice of proposed sale | Mar 3, 2026 | — |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 1, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| 4 | Insider transaction | Feb 18, 2026 | Feb 15, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 10, 2026 | — |
| 4 | Insider transaction | Feb 5, 2026 | Dec 3, 2025 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 4, 2026 | Feb 2, 2026 |
| 4 | Insider transaction | Feb 3, 2026 | Jan 30, 2026 |
| 144 | Notice of proposed sale | Jan 30, 2026 | — |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Dec 31, 2025 | Dec 31, 2025 |
| 3 | Initial insider ownership | Dec 31, 2025 | Dec 31, 2025 |
| 3 | Initial insider ownership | Dec 1, 2025 | Nov 20, 2025 |
| 3 | Initial insider ownership | Dec 1, 2025 | Nov 20, 2025 |
| 4 | Insider transaction | Nov 6, 2025 | Nov 5, 2025 |
| 4 | Insider transaction | Sep 3, 2025 | Aug 31, 2025 |
| 4 | Insider transaction | Sep 3, 2025 | Aug 31, 2025 |
| 4 | Insider transaction | Sep 3, 2025 | Aug 31, 2025 |
| 3 | Initial insider ownership | Sep 3, 2025 | Aug 31, 2025 |
| 3 | Initial insider ownership | Sep 3, 2025 | Aug 31, 2025 |
| 3 | Initial insider ownership | Sep 3, 2025 | Aug 31, 2025 |
| 4 | Insider transaction | Jul 31, 2025 | Jul 29, 2025 |
| 4 | Insider transaction | Jul 23, 2025 | Jul 22, 2025 |
| 3 | Initial insider ownership | Jun 9, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2025 | — |
| 4/A | Form 4/a | Mar 14, 2025 | Feb 25, 2025 |
| 4/A | Form 4/a | Mar 14, 2025 | Feb 25, 2025 |
| 4/A | Form 4/a | Mar 14, 2025 | Feb 25, 2025 |
| 4/A | Form 4/a | Mar 14, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Mar 5, 2025 | Mar 4, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 144 | Notice of proposed sale | Mar 4, 2025 | — |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 26, 2025 | Feb 25, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| 4 | Insider transaction | Feb 18, 2025 | Feb 14, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 4, 2025 | — |
| 4 | Insider transaction | Feb 3, 2025 | Jan 30, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Dec 2, 2024 | Nov 29, 2024 |
| SC 13G | Ownership over 5% (passive) | Nov 14, 2024 | — |
| 4 | Insider transaction | Oct 31, 2024 | Oct 30, 2024 |
| 4 | Insider transaction | Sep 4, 2024 | Aug 29, 2024 |
| 4 | Insider transaction | Jun 24, 2024 | Jun 21, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | May 14, 2024 | May 10, 2024 |
| 4 | Insider transaction | Apr 23, 2024 | Apr 19, 2024 |
| 4 | Insider transaction | Apr 18, 2024 | Apr 16, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
| 4 | Insider transaction | Mar 12, 2024 | Mar 8, 2024 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- State Commercial Banks (SIC 6022)
- Listed as
- COLB (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- WA
- Headquarters
- Tacoma, WA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 887343
- Former names
- COLUMBIA BANKING SYSTEM INC (until May 3, 2019)
Other State Commercial Banks companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.