{"schema_version":"secwatch.filing_event.v1","accession":"0000887343-25-000229","form_type":"8-K","ticker":"COLB","cik":"0000887343","company_name":"COLUMBIA BANKING SYSTEM, INC.","filed_at":"2025-08-06T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.595644+00:00","generated_at":"2026-05-17T20:16:58.599822+00:00","sec_items":["7.01","8.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Columbia and Pacific Premier receive all regulatory approvals; closing expected August 31, 2025","bullets":["All required regulatory approvals received from Federal Reserve, FDIC, and Oregon DFB.","Shareholder approvals obtained July 21, 2025; merger expected to close on or about August 31, 2025.","All-stock transaction announced April 23, 2025; integration planning underway.","Clint Stein (Columbia CEO) cites strong shareholder support and expects seamless integration."],"urls":{"canonical":"https://secwatch.observer/filing/0000887343-25-000229","json":"https://secwatch.observer/filing/0000887343-25-000229.json","markdown":"https://secwatch.observer/filing/0000887343-25-000229.md","text":"https://secwatch.observer/filing/0000887343-25-000229.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/887343/000088734325000229/0000887343-25-000229-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/887343/000088734325000229/colb-20250806.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T20:16:58.599822+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"}