{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-26-008967","form_type":"8-K","ticker":"CLBK","cik":"0001723596","company_name":"Columbia Financial, Inc.","filed_at":"2026-02-02T23:59:59+00:00","discovered_at":"2026-05-14T18:02:36.005971+00:00","generated_at":"2026-05-16T05:40:30.714868+00:00","sec_items":["1.01","7.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.9,"calibrated_materiality_score":0.9,"confidence":"high","headline":"Columbia Financial enters merger agreement with Northfield Bancorp, plans conversion to public stock holding company","bullets":["Columbia Financial and Northfield Bancorp executed Merger Agreement on Jan 31, 2026, unanimously approved by both boards.","Northfield shareholders may elect stock or cash consideration; exchange ratio varies based on final appraisal thresholds of $2.3B and $2.6B.","Post-merger, Steven M. Klein of Northfield appointed Senior EVP and COO of holding company and Columbia Bank.","Termination fee of $23.7 million payable by either party under certain circumstances."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-26-008967","json":"https://secwatch.observer/filing/0001104659-26-008967.json","markdown":"https://secwatch.observer/filing/0001104659-26-008967.md","text":"https://secwatch.observer/filing/0001104659-26-008967.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1723596/000110465926008967/0001104659-26-008967-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1723596/000110465926008967/tm264645d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud","generated_at":"2026-05-16T05:40:30.714868+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":"c2fdaa76e6b8a1c6d994923ba607f4d3a3f5a8fe","claim":"Columbia Financial, Inc. entered into Agreement and Plan of Merger with Northfield Bancorp, Inc. (effective 2026-01-31).","evidence_excerpt":"On January 31, 2026, Columbia Financial, Inc., a Delaware corporation (the “ Company ”), entered into an Agreement and Plan of Merger (the “ Merger Agreement ”) with Columbia Financial, Inc., a newly-formed Maryland corporation (the “ Holding Company ”), Columbia Bank MHC, the parent mutual holding company of the Company (the “ MHC ”), and Northfield Bancorp, Inc., a Delaware corporation (“ Northfield ”).","evidence_source":"SEC 8-K Item 1.01/1.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1723596/000110465926008967/0001104659-26-008967-index.htm","confidence":0.9,"family_label":"Material Agreements","details":[{"label":"Action","value":"entry"},{"label":"Agreement","value":"merger"},{"label":"Counterparty","value":"Northfield Bancorp, Inc."},{"label":"Effective","value":"2026-01-31"}],"fact_type":"material_agreement"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}