Columbia Banking System SEC Filings
NASDAQ: COLBFinanceMajor BanksUSD
28.37-0.16 (-0.56%)
At close: Oct 9, 4:00 PM ET · Delayed 15 min
Columbia Banking System filing overview
This page lists 60 recent SEC filings by Columbia Banking System (COLB), including 38 4, 12 8-K, 2 SCHEDULE 13G/A, 2 10-Q. The latest annual report (10-K) was filed on Feb 26, 2026 for the period ending Dec 31, 2025. The most recent quarterly report (10-Q) was filed on Aug 4, 2026.
The latest current report (8-K), used to disclose material events such as earnings releases and executive changes, was filed on Sep 30, 2026. Form 10-K is the audited annual report, 10-Q the quarterly report, 8-K covers material events, and Form 4 reports insider transactions. All documents link directly to SEC EDGAR.
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COLB SEC filings
| Filed | Form | Description | Document |
|---|---|---|---|
| Sep 30, 2026 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Sep 15, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Sep 8, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Sep 4, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Aug 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Aug 14, 2026 | 8-K | Other Events | View on EDGAR |
| Aug 13, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Aug 4, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Jul 30, 2026 | 8-K | Departure or Appointment of Directors or Officers; Compensatory Arrangements; Regulation FD Disclosure | View on EDGAR |
| Jul 23, 2026 | 8-K | Results of Operations and Financial Condition; Regulation FD Disclosure | View on EDGAR |
| Jul 2, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jul 1, 2026 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Jun 16, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Jun 10, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 18, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| May 15, 2026 | 8-K | Submission of Matters to a Vote of Security Holders | View on EDGAR |
| May 15, 2026 | 8-K | Other Events | View on EDGAR |
| May 5, 2026 | 10-Q | Quarterly report | View on EDGAR |
| Apr 29, 2026 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Apr 23, 2026 | 8-K | Results of Operations and Financial Condition; Regulation FD Disclosure | View on EDGAR |
| Apr 16, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 31, 2026 | 8-K | Regulation FD Disclosure | View on EDGAR |
| Mar 31, 2026 | DEF 14A | Definitive proxy statement | View on EDGAR |
| Mar 26, 2026 | SCHEDULE 13G/A | Beneficial ownership report (passive) (amendment) | View on EDGAR |
| Mar 20, 2026 | 4/A | Statement of changes in beneficial ownership (amendment) | View on EDGAR |
| Mar 20, 2026 | 4/A | Statement of changes in beneficial ownership (amendment) | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 17, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 5, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 2, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 2, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 2, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 2, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 2, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 2, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 2, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Mar 2, 2026 | 4 | Statement of changes in beneficial ownership | View on EDGAR |
| Feb 26, 2026 | 10-K | Annual report | View on EDGAR |
| Feb 13, 2026 | 8-K | Other Events | View on EDGAR |
| Feb 10, 2026 | SCHEDULE 13G | Beneficial ownership report (passive) | View on EDGAR |
| Jan 22, 2026 | 8-K | Results of Operations and Financial Condition; Regulation FD Disclosure | View on EDGAR |
| Dec 31, 2025 | 8-K | Regulation FD Disclosure | View on EDGAR |