{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-112965","form_type":"8-K","ticker":"NBBK","cik":"0001979330","company_name":"NB Bancorp, Inc.","filed_at":"2025-11-17T23:59:59+00:00","discovered_at":"2026-05-14T18:02:41.203576+00:00","generated_at":"2026-05-16T19:24:34.784297+00:00","sec_items":["2.01","5.02","7.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"NB Bancorp completes acquisition of Provident Bancorp; issues ~5.94M shares","bullets":["Merger closed Nov 15, 2025; each Provident share converts to 0.691 NBBK shares or $13 cash, prorated 50/50.","Needham will issue approx 5,944,350 shares; pro forma outstanding shares ~45,770,800.","Joseph B. Reilly appointed as director; receives $800K severance, $250K non-compete, and $27.5K/mo consulting for 18 months.","Cash consideration funded from Needham's cash on hand."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-112965","json":"https://secwatch.observer/filing/0001104659-25-112965.json","markdown":"https://secwatch.observer/filing/0001104659-25-112965.md","text":"https://secwatch.observer/filing/0001104659-25-112965.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1979330/000110465925112965/0001104659-25-112965-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1979330/000110465925112965/tm2531268d3_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T19:24:34.784297+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":"c8af8291a8947761a08fa5ebbb567929c83ce4e2","claim":"NB Bancorp, Inc. completed an acquisition involving Provident Bancorp, Inc. for 0.691 shares of Needham common stock per share or $13.00 per share in cash (closed 2025-11-15).","evidence_excerpt":"f Provident Bancorp, Inc. (“Provident”) and BankProv, a wholly owned subsidiary of Provident.","evidence_source":"SEC 8-K Item 2.01/5.01","evidence_url":"https://www.sec.gov/Archives/edgar/data/1979330/000110465925112965/0001104659-25-112965-index.htm","confidence":0.9,"family_label":"M&A Transactions","details":[{"label":"Action","value":"acquisition"},{"label":"Counterparty","value":"Provident Bancorp, Inc."},{"label":"Consideration","value":"0.691 shares of Needham common stock per share or $13.00 per share in cash"},{"label":"Closing","value":"2025-11-15"}],"fact_type":"ma_transaction"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}