{"schema_version":"secwatch.filing_event.v1","accession":"0000887343-26-000116","form_type":"8-K","ticker":"COLB","cik":"0000887343","company_name":"COLUMBIA BANKING SYSTEM, INC.","filed_at":"2026-03-31T23:59:59+00:00","discovered_at":"2026-05-14T18:02:37.929843+00:00","generated_at":"2026-05-15T08:19:10.419893+00:00","sec_items":["7.01","9.01"],"event_type":"other","sentiment":"neutral","materiality_score":0.1,"calibrated_materiality_score":0.1,"confidence":"high","headline":"Columbia Banking sets Q1 2026 earnings release and call for April 23","bullets":["Q1 2026 results will be released after market close on Thursday, April 23, 2026.","Conference call for investors and analysts at 2:00 p.m. PT (5:00 p.m. ET) the same day.","Management will discuss results and recent activities; Q&A session to follow.","Ticker: COLB (Nasdaq). No preliminary financial information provided."],"urls":{"canonical":"https://secwatch.observer/filing/0000887343-26-000116","json":"https://secwatch.observer/filing/0000887343-26-000116.json","markdown":"https://secwatch.observer/filing/0000887343-26-000116.md","text":"https://secwatch.observer/filing/0000887343-26-000116.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/887343/000088734326000116/0000887343-26-000116-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/887343/000088734326000116/colb-20260331.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T08:19:10.419893+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"}