COLUMBIA BANKING SYSTEM, INC.
SEC Filing List
COLB CIK: 0000887343
| Form | Description | Owner/Filer | Filing Agent | Date | Actions |
|---|---|---|---|---|---|
| 8-K | Current report filing | Columbia Banking System, Inc. | 03/31/2026 | ||
| 11-K | Annual report of employee stock purchase... | Columbia Banking System, Inc. | 03/31/2026 | ||
| DEF 14A | Definitive proxy statements | Columbia Banking System, Inc. | 03/31/2026 | ||
| ARS | Annual report to security holders | Columbia Banking System, Inc. | 03/31/2026 | ||
| DEFA14A | Definitive additional proxy soliciting m... | Columbia Banking System, Inc. | 03/31/2026 | ||
| SCHEDULE 13G/A | 03/26/2026 | ||||
| 4/A | Amendment to Statement of changes in ben... | Baruffi Kumi Yamamoto | Columbia Banking System, Inc. | 03/20/2026 | |
| 4/A | Amendment to Statement of changes in ben... | Lakely Brock | Columbia Banking System, Inc. | 03/20/2026 | |
| 4 | Statement of changes in beneficial owner... | Namdar Frank | Columbia Banking System, Inc. | 03/17/2026 | |
| 4 | Statement of changes in beneficial owner... | Ognall Andrew H | Columbia Banking System, Inc. | 03/17/2026 | |
| No record found. | |||||
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