{"schema_version":"secwatch.filing_event.v1","accession":"0000887343-25-000133","form_type":"8-K","ticker":"COLB","cik":"0000887343","company_name":"COLUMBIA BANKING SYSTEM, INC.","filed_at":"2025-03-31T23:59:59+00:00","discovered_at":"2026-05-14T18:03:06.691483+00:00","generated_at":"2026-05-24T02:45:20.289707+00:00","sec_items":["7.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"confidence":"high","headline":"Columbia Banking System sets Q1 2025 earnings call for April 24 after market close","bullets":["First quarter 2025 financial results released Thursday, April 24, 2025 after market close.","Conference call at 2:00 p.m. PT (5:00 p.m. ET) with Q&A session.","Parent company of Umpqua Bank; ticker COLB on Nasdaq."],"urls":{"canonical":"https://secwatch.observer/filing/0000887343-25-000133","json":"https://secwatch.observer/filing/0000887343-25-000133.json","markdown":"https://secwatch.observer/filing/0000887343-25-000133.md","text":"https://secwatch.observer/filing/0000887343-25-000133.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/887343/000088734325000133/0000887343-25-000133-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/887343/000088734325000133/colb-20250331.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-24T02:45:20.289707+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"}