# Columbia Banking System, Inc. (COLB) SEC filings and CIK

Canonical: https://sec-api.dev/companies/colb

> COLB’s SEC CIK is 0000887343 (887343).

Insider transactions in the latest quarter: 5 (1 purchases, 0 sales). https://sec-api.dev/insider-trading/colb

| Filed | Form | Filing |
| --- | --- | --- |
| 2026-10-30 | 4 | https://www.sec.gov/Archives/edgar/data/887343/000088734326000185/0000887343-26-000185-index.htm |

API: GET https://sec-api.dev/api/v1/filings?cik=887343

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