{"schema_version":"secwatch.filing_event.v1","accession":"0000887343-25-000236","form_type":"8-K","ticker":"COLB","cik":"0000887343","company_name":"COLUMBIA BANKING SYSTEM, INC.","filed_at":"2025-08-15T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.595921+00:00","generated_at":"2026-05-17T12:42:38.525471+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 $0.36 quarterly dividend, payable Sept 15","bullets":["Board approved quarterly cash dividend of $0.36 per common share.","Dividend payable September 15, 2025 to shareholders of record as of August 29, 2025.","Columbia Banking System (Nasdaq: COLB) parent of Columbia Bank, formerly Umpqua Bank."],"urls":{"canonical":"https://secwatch.observer/filing/0000887343-25-000236","json":"https://secwatch.observer/filing/0000887343-25-000236.json","markdown":"https://secwatch.observer/filing/0000887343-25-000236.md","text":"https://secwatch.observer/filing/0000887343-25-000236.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/887343/000088734325000236/0000887343-25-000236-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/887343/000088734325000236/colb-20250815.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T12:42:38.525471+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"}