{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-25-100844","form_type":"8-K","ticker":"NBBK","cik":"0001979330","company_name":"NB Bancorp, Inc.","filed_at":"2025-10-20T23:59:59+00:00","discovered_at":"2026-05-14T18:02:41.201946+00:00","generated_at":"2026-05-17T03:18:30.841749+00:00","sec_items":["8.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"NB Bancorp receives all regulatory approvals for Provident Bancorp acquisition; closing Nov 14, 2025","bullets":["All regulatory approvals for Needham's acquisition of Provident have been received.","Merger expected to close on or about November 14, 2025.","Provident stockholders approved the merger on September 16, 2025.","Deal was originally announced June 5, 2025."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-25-100844","json":"https://secwatch.observer/filing/0001104659-25-100844.json","markdown":"https://secwatch.observer/filing/0001104659-25-100844.md","text":"https://secwatch.observer/filing/0001104659-25-100844.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1979330/000110465925100844/0001104659-25-100844-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1979330/000110465925100844/tm2529112d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T03:18:30.841749+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"}