COLB - Company ID 0000887343
COLUMBIA BANKING SYSTEM, INC. has filed 1,871 public company documents between 1996 and 2026. The most frequent type is insider trade (982 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Type | Filing | Filed | Period covered | Open |
|---|---|---|---|---|
| 4 | Insider trade | 6mo ago2025-12-31 | 2025-12-31 | View filing |
| 3 | New insider ownership | 6mo ago2025-12-31 | 2025-12-31 | View filing |
| 8-K | Major company event | 6mo ago2025-12-31 | 2025-12-31 | View filing |
| 3 | New insider ownership | 7mo ago2025-12-01 | 2025-11-20 | View filing |
| 3 | New insider ownership | 7mo ago2025-12-01 | 2025-11-20 | View filing |
| 8-K | Major company event | 7mo ago2025-11-21 | 2025-11-19 | View filing |
| 8-K | Major company event | 7mo ago2025-11-14 | 2025-11-14 | View filing |
| 4 | Insider trade | 8mo ago2025-11-06 | 2025-11-05 | View filing |
| 10-Q | Quarterly report | 8mo ago2025-11-06 | 2025-09-30 | View filing |
| 8-K | Major company event | 8mo ago2025-11-04 | 2025-10-29 | View filing |
| 8-K | Major company event | 8mo ago2025-10-30 | 2025-10-30 | View filing |
| 4 | Insider trade | 10mo ago2025-09-03 | 2025-08-31 | View filing |
| 4 | Insider trade | 10mo ago2025-09-03 | 2025-08-31 | View filing |
| 4 | Insider trade | 10mo ago2025-09-03 | 2025-08-31 | View filing |
| 3 | New insider ownership | 10mo ago2025-09-03 | 2025-08-31 | View filing |
| 3 | New insider ownership | 10mo ago2025-09-03 | 2025-08-31 | View filing |
| 3 | New insider ownership | 10mo ago2025-09-03 | 2025-08-31 | View filing |
| 8-K/A | Major company event (amended) | 10mo ago2025-09-03 | 2025-09-02 | View filing |
| S-8 | Employee stock plan | 10mo ago2025-09-02 | - | View filing |
| 8-K | Major company event | 10mo ago2025-09-02 | 2025-09-02 | View filing |
| 8-K | Major company event | 10mo ago2025-08-29 | 2025-08-29 | View filing |
| 8-K | Major company event | 10mo ago2025-08-15 | 2025-08-15 | View filing |
| 10-Q | Quarterly report | 11mo ago2025-08-06 | 2025-06-30 | View filing |
| 8-K | Major company event | 11mo ago2025-08-06 | 2025-08-06 | View filing |
| 4 | Insider trade | 11mo ago2025-07-31 | 2025-07-29 | View filing |
| 8-K | Major company event | 11mo ago2025-07-24 | 2025-07-24 | View filing |
| 4 | Insider trade | 11mo ago2025-07-23 | 2025-07-22 | View filing |
| 8-K | Major company event | 11mo ago2025-07-22 | 2025-07-21 | View filing |
| 425 | 425 | 12mo ago2025-07-11 | - | View filing |
| 8-K | Major company event | 12mo ago2025-07-11 | 2025-07-11 | View filing |
| 8-K | Major company event | 1y ago2025-06-30 | 2025-06-30 | View filing |
| 11-K | Employee plan annual report | 1y ago2025-06-27 | 2024-12-31 | View filing |
| EFFECT | EFFECT | 1y ago2025-06-16 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-06-16 | - | View filing |
| CORRESP | Company correspondence | 1y ago2025-06-13 | - | View filing |
| S-4/A | S-4/A | 1y ago2025-06-13 | - | View filing |
| 3 | New insider ownership | 1y ago2025-06-09 | 2025-06-02 | View filing |
| UPLOAD | SEC correspondence | 1y ago2025-06-04 | - | View filing |
| 4 | Insider trade | 1y ago2025-06-03 | 2025-06-02 | View filing |
| S-4 | S-4 | 1y ago2025-05-28 | - | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |
| 4 | Insider trade | 1y ago2025-05-16 | 2025-05-15 | View filing |