{"url_path":"/sec/nfbk/8-k/2026-07-22/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-07-22","source_url":"https://www.sec.gov/Archives/edgar/data/1493225/0001193125-26-312412-index.html","accession_number":"0001193125-26-312412","cik":"0001493225","ticker":"NFBK","issuer_name":"Northfield Bancorp, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1493225/0001193125-26-312412-index.html","primary_entity_key":"0001493225","primary_entity_name":"Northfield Bancorp, Inc."},"word_count":401,"has_tables":true,"body_markdown":"8-K\n\nfalse 0001493225 --12-31 0001493225 2026-07-20 2026-07-20\n\n \n\n \n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWashington, D.C. 20549\n\n \n\n \n\nFORM 8-K\n\n \n\n \n\nCURRENT REPORT\n\nPursuant to Section 13 or 15(d)\n\nof the Securities Exchange Act of 1934\n\nDate of report (date of earliest event reported): July 20, 2026\n\n \n\n \n\nNORTHFIELD BANCORP, INC.\n\n(Exact name of registrant as specified in its charter)\n\n \n\n \n\n \n\nDelaware\n \n001-35791\n \n80-0882592\n\n(State or other jurisdiction of\nincorporation or organization)\n \n(Commission\nFile No.)\n \n(IRS Employer\nIdentification No.)\n\n81 Main Street, Woodbridge, New Jersey 07095\n\n(Address of principal executive offices) (Zip Code)\n\n(301) 774-6400\n\n(Registrant’s telephone number, including area code)\n\nNot Applicable\n\n(Former name or former address, if changed since last report)\n\n \n\n \n\nCheck the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):\n\n \n\n☐\n\nWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n \n\n☐\n\nSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n \n\n☐\n\nPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n \n\n☐\n\nPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\nSecurities registered pursuant to Section 12(b) of the Act:\n\n \n\nTitle of each class\n\n \n\nTrading\nSymbol(s)\n\n \n\nName of each exchange\non which registered\n\nCommon stock, par value $0.01 per share\n \nNFBK\n \nThe NASDAQ Stock Market LLC\n\nIndicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).\n\nEmerging growth company ☐\n\nIf an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐\n\n \n\n \n\n \n\nIntroduction\n\nThis Current Report on Form 8-K is being filed in connection with the completion on July 20, 2026 of the previously announced merger between Columbia Financial, Inc., a Maryland corporation (“Columbia Financial”), and Northfield Bancorp, Inc., a Delaware corporation (“Northfield Bancorp”), pursuant to the Agreement and Plan of Merger, dated as of January 31, 2026 (the “Merger Agreement”), by and among Columbia Financial, Columbia Financial, Inc., a Delaware corporation and the mid-tier holding company for Columbia Bank, Columbia Bank MHC and Northfield Bancorp."}