{"schema_version":"secwatch.filing_event.v1","accession":"0001558370-25-009259","form_type":"8-K","ticker":"NBBK","cik":"0001979330","company_name":"NB Bancorp, Inc.","filed_at":"2025-07-16T23:59:59+00:00","discovered_at":"2026-05-14T18:02:45.746497+00:00","generated_at":"2026-05-18T06:20:17.635613+00:00","sec_items":["8.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"NB Bancorp completes stock repurchase program, repurchased 2M shares at avg $17.96","bullets":["Under the plan, repurchased 2,028,522 shares (~5% of then-outstanding stock) at avg price $17.96 (incl. commission and excise tax).","Cumulative repurchases from Jan 22, 2025, through program completion: 4,163,809 shares (9.8% of IPO shares) at weighted avg $18.52.","Tangible book value per share as of March 31, 2025, was $18.20, near the repurchase average price.","Share repurchase reflects management's confidence and is accretive to book value per share."],"urls":{"canonical":"https://secwatch.observer/filing/0001558370-25-009259","json":"https://secwatch.observer/filing/0001558370-25-009259.json","markdown":"https://secwatch.observer/filing/0001558370-25-009259.md","text":"https://secwatch.observer/filing/0001558370-25-009259.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1979330/000155837025009259/0001558370-25-009259-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1979330/000155837025009259/nbbk-20250715x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-18T06:20:17.635613+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"}