{"url_path":"/sec/cbu/8-k/2026-06-01/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-06-01","source_url":"https://www.sec.gov/Archives/edgar/data/723188/0001104659-26-068535-index.html","accession_number":"0001104659-26-068535","cik":"0000723188","ticker":"CBU","issuer_name":"COMMUNITY FINANCIAL SYSTEM, INC.","edgar_url":"https://www.sec.gov/Archives/edgar/data/723188/0001104659-26-068535-index.html","primary_entity_key":"0000723188","primary_entity_name":"COMMUNITY FINANCIAL SYSTEM, INC."},"word_count":309,"has_tables":true,"body_markdown":"false\nCOMMUNITY FINANCIAL SYSTEM, INC.\n0000723188\n\n0000723188\n\n2026-06-01\n2026-06-01\n\niso4217:USD\n\nxbrli:shares\n\niso4217:USD\n\nxbrli:shares\n\n \n\n \n\n  \n\n**UNITED STATES**\n\n**SECURITIES AND\nEXCHANGE COMMISSION**\n\n**WASHINGTON, D.C.\n20549**\n\n \n\n \n\n \n\n**FORM 8-K**\n\n \n\n**CURRENT REPORT**\n\n**Pursuant to Section 13 or 15(d) of the\nSecurities Exchange Act of 1934**\n\n \n\nDate of Report (Date of earliest event reported):\n**June 1, 2026**\n\n \n\n \n\n(Exact name of registrant as specified in\nits charter)\n\n \n\n**Delaware**\n**001-13695**\n**16-1213679**\n\n(State or other jurisdiction\nof\n\nincorporation)\n(Commission File\nNumber)\n(IRS Employer Identification\nNo.)\n\n** **\n\n**333 Butternut Drive, Syracuse, New York**\n**13214**\n\n(Address\nof principal executive offices)\n(Zip Code)\n\n \n\nRegistrant’s telephone number, including area code: **(315****)\n445-2282**\n\n \n\n \n\n \n\n(Former name or former\naddress, if changed since last report)\n\n \n\nCheck the appropriate box below if the Form 8-K filing is intended\nto simultaneously satisfy the filing obligation of the registrant under any of the following provisions:\n\n \n\n¨\nWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n¨\nSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n¨\nPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n¨\nPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\n \n\nSecurities registered pursuant to Section 12(b) of the Act:\n\n \n\nTitle of each class\nTrading\n\nSymbol(s)\nName\nof each exchange on which registered\n\nCommon Stock, $1.00 par value per share\nCBU\nNew York Stock Exchange\n\n \n\nIndicate by check mark whether the registrant is an emerging\ngrowth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities\nExchange Act of 1934 (§240.12b-2 of this chapter).\n\n \n\nEmerging growth company   ¨\n\n \n\nIf an emerging growth company, indicate by check mark if the registrant\nhas elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant\nto Section 13(a) of the Exchange Act.¨"}