{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-264630","form_type":"8-K","ticker":"COLB","cik":"0000887343","company_name":"COLUMBIA BANKING SYSTEM, INC.","filed_at":"2025-11-04T23:59:59+00:00","discovered_at":"2026-05-14T18:02:42.496060+00:00","generated_at":"2026-05-17T00:47:34.446052+00:00","sec_items":["5.02","7.01","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"Columbia Banking System appoints Ivan Seda as CFO effective Dec 31, 2025; Farnsworth transitions to advisor","bullets":["Ivan Seda named CFO effective Dec 31, 2025; base salary $550,000, target incentive 85%, PSU grant $750,000.","Ronald Farnsworth steps down as CFO on Dec 31, 2025, serves as senior advisor through June 1, 2026.","Farnsworth receives cash severance, 18 months of benefits contributions, and lump sum based on 62,572 target shares.","Seda joined Columbia as Deputy CFO in August 2025; prior roles include CFO at Union Bank and Deputy CFO at BECU."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-264630","json":"https://secwatch.observer/filing/0001193125-25-264630.json","markdown":"https://secwatch.observer/filing/0001193125-25-264630.md","text":"https://secwatch.observer/filing/0001193125-25-264630.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/887343/000119312525264630/0001193125-25-264630-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/887343/000119312525264630/d846413d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T00:47:34.446052+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"}