{"schema_version":"secwatch.filing_event.v1","accession":"0001104659-23-108753","form_type":"8-K","ticker":"NBBK","cik":"0001979330","company_name":"NB Bancorp, Inc.","filed_at":"2023-10-12T23:59:59+00:00","discovered_at":"2026-05-14T18:03:31.494124+00:00","generated_at":"2026-06-10T01:15:17.153185+00:00","sec_items":["1.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"NB Bancorp hires Piper Sandler for stock offering in mutual-to-stock conversion","bullets":["Piper Sandler will market common stock in connection with NB Financial MHC's conversion to a stock holding company.","Fee is 1.35% of subscription offering proceeds and 3.00% of community offering proceeds.","Piper Sandler receives $85,000 for records services plus expense reimbursement.","Syndicated community offering fee capped at 5.0% of aggregate purchase price.","Shares offered under S-1 registration statement; prospectus dated October 12, 2023."],"urls":{"canonical":"https://secwatch.observer/filing/0001104659-23-108753","json":"https://secwatch.observer/filing/0001104659-23-108753.json","markdown":"https://secwatch.observer/filing/0001104659-23-108753.md","text":"https://secwatch.observer/filing/0001104659-23-108753.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1979330/000110465923108753/0001104659-23-108753-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1979330/000110465923108753/tm2328196d1_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T01:15:17.153185+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"}