{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-104942","form_type":"8-K","ticker":"NBBK","cik":"0001979330","company_name":"NB Bancorp, Inc.","filed_at":"2025-10-31T23:59:59+00:00","discovered_at":"2026-05-14T18:02:41.202487+00:00","generated_at":"2026-05-17T01:09:25.132867+00:00","sec_items":["8.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"NB Bancorp-Provident merger to close Nov 15; election deadline Nov 7","bullets":["Election deadline for Provident stockholders to choose merger consideration is 5:00 p.m. ET on Nov 7, 2025.","Merger effective shortly after midnight on Nov 15, 2025; BankProv conversion over Nov 15 weekend.","Last trading day for Provident common stock (PVBC) is Nov 14, 2025.","Consideration: 0.691 NBBK shares or $13.00 cash per Provident share, subject to proration."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-104942","json":"https://secwatch.observer/filing/0001104659-25-104942.json","markdown":"https://secwatch.observer/filing/0001104659-25-104942.md","text":"https://secwatch.observer/filing/0001104659-25-104942.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1979330/000110465925104942/0001104659-25-104942-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1979330/000110465925104942/tm2529923d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T01:09:25.132867+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"}