{"schema_version":"secwatch.filing_event.v1","accession":"0000887343-26-000173","form_type":"8-K","ticker":"COLB","cik":"0000887343","company_name":"COLUMBIA BANKING SYSTEM, INC.","filed_at":"2026-08-14T20:35:19+00:00","discovered_at":"2026-08-14T20:40:32.717277+00:00","generated_at":"2026-08-14T20:40:53.865867+00:00","sec_items":["8.01","9.01"],"event_type":"dividend","sentiment":"neutral","materiality_score":0.25,"calibrated_materiality_score":0.25,"confidence":"high","headline":"Columbia Banking System declares $0.37 quarterly dividend payable Sept 14, 2026","bullets":["Quarterly cash dividend of $0.37 per common share approved by Board.","Payable September 14, 2026 to shareholders of record as of August 28, 2026.","Columbia Banking System, Inc. (Nasdaq: COLB) is parent of Columbia Bank."],"urls":{"canonical":"https://secwatch.observer/filing/0000887343-26-000173","json":"https://secwatch.observer/filing/0000887343-26-000173.json","markdown":"https://secwatch.observer/filing/0000887343-26-000173.md","text":"https://secwatch.observer/filing/0000887343-26-000173.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/887343/000088734326000173/0000887343-26-000173-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/887343/000088734326000173/colb-20260814.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-08-14T20:40:53.865867+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}