{"schema_version":"secwatch.filing_event.v1","accession":"0000887343-25-000280","form_type":"8-K","ticker":"COLB","cik":"0000887343","company_name":"COLUMBIA BANKING SYSTEM, INC.","filed_at":"2025-12-31T23:59:59+00:00","discovered_at":"2026-05-14T18:02:42.496744+00:00","generated_at":"2026-05-16T11:57:02.843018+00:00","sec_items":["7.01","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"confidence":"high","headline":"Columbia Banking System to report Q4 2025 earnings on Jan 22, 2026 after market close","bullets":["Earnings release scheduled for after market close on Thursday, January 22, 2026.","Conference call at 2:00 PM PT (5:00 PM ET) same day to discuss results and recent activities.","Live Q&A session and audiocast available; registration details provided in press release."],"urls":{"canonical":"https://secwatch.observer/filing/0000887343-25-000280","json":"https://secwatch.observer/filing/0000887343-25-000280.json","markdown":"https://secwatch.observer/filing/0000887343-25-000280.md","text":"https://secwatch.observer/filing/0000887343-25-000280.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/887343/000088734325000280/0000887343-25-000280-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/887343/000088734325000280/colb-20251231.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T11:57:02.843018+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"}