{"url_path":"/sec/nbbk/8-k/2026-05-13/item-8-01","section_key":"item-8-01","section_title":"Item 8.01 ****Other Events**","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-13","source_url":"https://www.sec.gov/Archives/edgar/data/1979330/0001104659-26-060111-index.html","accession_number":"0001104659-26-060111","cik":"0001979330","ticker":"NBBK","issuer_name":"NB Bancorp, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1979330/0001104659-26-060111-index.html","primary_entity_key":"0001979330","primary_entity_name":"NB Bancorp, Inc."},"word_count":200,"has_tables":true,"body_markdown":"**Item 8.01****Other Events**\n\n​\n\nOn May 13, 2026, NB Bancorp, Inc. (the “Company”) announced the completion of its stock repurchase program. Under the plan, the Company repurchased 2,207,236 shares, or approximately 5% of its then outstanding common stock. The shares were repurchased by the Company at an average price of $20.96 per share, including commission and excise tax.\n\n​\n\nSince announcing its first stock repurchase program on January 22, 2025, through the completion of the third stock repurchase program, the Company has repurchased 6,371,044 shares, or 16% of its common shares that were issued in its initial public offering at the end of 2023, at a weighted average price of $19.25. The Company’s tangible book value per share was $18.00 as of March 31, 2026.\n\n​\n\n​\n\n​\n\n​\n\n​\n\n​\n\n​\n\n​\n\n​\n\n​\n\nSIGNATURES\n\nPursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.\n\n​\n\n​\n\n​\n\n​\n\n​\n\nNB BANCORP, INC.\n\n​\n\n​\n\n​\n\nDATE: May 13, 2026\n\nBy: \n\n/s/ Jean-Pierre Lapointe\n\n​\n\n​\n\nJean-Pierre Lapointe\n\nSenior Executive Vice President and Chief Financial Officer\n\n​\n\n​\n\n​"}