{"schema_version":"secwatch.filing_event.v1","accession":"0000887343-23-000291","form_type":"8-K","ticker":"COLB","cik":"0000887343","company_name":"COLUMBIA BANKING SYSTEM, INC.","filed_at":"2023-07-19T23:59:59+00:00","discovered_at":"2026-05-14T18:03:36.890084+00:00","generated_at":"2026-06-13T06:44:43.444680+00:00","sec_items":["2.02","7.01","9.01"],"event_type":"earnings","sentiment":"neutral","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Columbia Banking Q2 net income $133M; adjusted EPS $0.81; NIM and FY guidance lowered","bullets":["GAAP diluted EPS $0.64 vs ($0.09) in Q1; operating EPS $0.81.","Net interest margin (GAAP) 3.93%, down 15bp QoQ; adjusted NIM 3.32%, down 41bp.","FY2023 adjusted NIM guidance cut to 3.20-3.40% from 3.55-3.65%.","Cost synergies of $105M annualized realized; on track for $135M+ by Q3.","Deposits declined $751M QoQ to $40.8B; loans flat excluding $373M sale."],"urls":{"canonical":"https://secwatch.observer/filing/0000887343-23-000291","json":"https://secwatch.observer/filing/0000887343-23-000291.json","markdown":"https://secwatch.observer/filing/0000887343-23-000291.md","text":"https://secwatch.observer/filing/0000887343-23-000291.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/887343/000088734323000291/0000887343-23-000291-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/887343/000088734323000291/colb-20230719.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-13T06:44:43.444680+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":[{"claim_id":"4da941266c8a7c0bfc0a59fd5e69f7e4cbebc73f","claim":"COLUMBIA BANKING SYSTEM, INC. reported financial results for second quarter 2023.","evidence_excerpt":"On July 19, 2023, Columbia Banking System, Inc. issued a press release announcing second quarter 2023 financial results.","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/887343/000088734323000291/0000887343-23-000291-index.htm","confidence":0.9,"family_label":"Earnings Releases","details":[{"label":"Period","value":"second quarter 2023"},{"label":"Result","value":"reported results"}],"fact_type":"earnings_release"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}