Columbia Banking System Inc. (COLB) SEC Filings
10-K, 10-Q, 8-K, and other SEC filings · View on SEC EDGAR
Total Filings
100
10-K Reports
1
10-Q Reports
3
Latest Filing
May 18, 2026
| Form Type | Description | Filed | Link |
|---|---|---|---|
| 4 | Insider Transaction | May 18, 2026 | View |
| 4 | Insider Transaction | May 18, 2026 | View |
| 4 | Insider Transaction | May 18, 2026 | View |
| 4 | Insider Transaction | May 18, 2026 | View |
| 4 | Insider Transaction | May 18, 2026 | View |
| 4 | Insider Transaction | May 18, 2026 | View |
| 4 | Insider Transaction | May 18, 2026 | View |
| 4 | Insider Transaction | May 18, 2026 | View |
| 4 | Insider Transaction | May 18, 2026 | View |
| 4 | Insider Transaction | May 18, 2026 | View |
| 8-K | Current Report | May 15, 2026 | View |
| 8-K | Current Report | May 15, 2026 | View |
| 10-Q | Quarterly Report | May 5, 2026 | View |
| 8-K | Current Report | Apr 23, 2026 | View |
| 4 | Insider Transaction | Apr 16, 2026 | View |
| 8-K | Current Report | Mar 31, 2026 | View |
| DEF 14A | Proxy Statement | Mar 31, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 17, 2026 | View |
| 4 | Insider Transaction | Mar 5, 2026 | View |
| 4 | Insider Transaction | Mar 2, 2026 | View |
| 4 | Insider Transaction | Mar 2, 2026 | View |
| 4 | Insider Transaction | Mar 2, 2026 | View |
| 4 | Insider Transaction | Mar 2, 2026 | View |
| 4 | Insider Transaction | Mar 2, 2026 | View |
| 4 | Insider Transaction | Mar 2, 2026 | View |
| 4 | Insider Transaction | Mar 2, 2026 | View |
| 4 | Insider Transaction | Mar 2, 2026 | View |
| 4 | Insider Transaction | Mar 2, 2026 | View |
| 4 | Insider Transaction | Mar 2, 2026 | View |
| 10-K | Annual Report | Feb 26, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 20, 2026 | View |
| 4 | Insider Transaction | Feb 18, 2026 | View |
| 4 | Insider Transaction | Feb 18, 2026 | View |
| 4 | Insider Transaction | Feb 18, 2026 | View |
| 4 | Insider Transaction | Feb 18, 2026 | View |
| 4 | Insider Transaction | Feb 18, 2026 | View |
| 4 | Insider Transaction | Feb 18, 2026 | View |
| 4 | Insider Transaction | Feb 18, 2026 | View |
| 4 | Insider Transaction | Feb 18, 2026 | View |
| 4 | Insider Transaction | Feb 18, 2026 | View |
| 8-K | Current Report | Feb 13, 2026 | View |
| 4 | Insider Transaction | Feb 5, 2026 | View |
| 4 | Insider Transaction | Feb 4, 2026 | View |
| 4 | Insider Transaction | Feb 4, 2026 | View |
| 4 | Insider Transaction | Feb 4, 2026 | View |
| 4 | Insider Transaction | Feb 4, 2026 | View |
| 4 | Insider Transaction | Feb 4, 2026 | View |
| 4 | Insider Transaction | Feb 4, 2026 | View |
| 4 | Insider Transaction | Feb 4, 2026 | View |
| 4 | Insider Transaction | Feb 4, 2026 | View |
| 4 | Insider Transaction | Feb 4, 2026 | View |
| 4 | Insider Transaction | Feb 3, 2026 | View |
| 4 | Insider Transaction | Jan 22, 2026 | View |
| 4 | Insider Transaction | Jan 22, 2026 | View |
| 4 | Insider Transaction | Jan 22, 2026 | View |
| 4 | Insider Transaction | Jan 22, 2026 | View |
| 8-K | Current Report | Jan 22, 2026 | View |
| 4 | Insider Transaction | Jan 22, 2026 | View |
| 4 | Insider Transaction | Jan 22, 2026 | View |
| 4 | Insider Transaction | Jan 22, 2026 | View |
| 4 | Insider Transaction | Jan 22, 2026 | View |
| 4 | Insider Transaction | Jan 22, 2026 | View |
| 4 | Insider Transaction | Dec 31, 2025 | View |
| 8-K | Current Report | Dec 31, 2025 | View |
| 8-K | Current Report | Nov 21, 2025 | View |
| 8-K | Current Report | Nov 14, 2025 | View |
| 4 | Insider Transaction | Nov 6, 2025 | View |
| 10-Q | Quarterly Report | Nov 6, 2025 | View |
| 8-K | Current Report | Nov 4, 2025 | View |
| 8-K | Current Report | Oct 30, 2025 | View |
| 4 | Insider Transaction | Sep 3, 2025 | View |
| 4 | Insider Transaction | Sep 3, 2025 | View |
| 4 | Insider Transaction | Sep 3, 2025 | View |
| 8-K | Current Report | Sep 2, 2025 | View |
| 8-K | Current Report | Aug 29, 2025 | View |
| 8-K | Current Report | Aug 15, 2025 | View |
| 8-K | Current Report | Aug 6, 2025 | View |
| 10-Q | Quarterly Report | Aug 6, 2025 | View |
| 4 | Insider Transaction | Jul 31, 2025 | View |