Shareholder Vote

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 21, 2026 UNUM GROUP (Exact name of registrant as specified in its charter) Delaware 001-11294 62-1598430 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.) 1 Fountain Square Chattanooga , Tennessee 37402 (Address of principal executive offices) (Zip Code) ( 423 ) 294-1011 (Registrant's telephone number, including area code) Not Applicable (Former name or former address, if changed since last report) Check 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): ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act: Title of each class   Trading Symbol(s)   Name of each exchange on which registered Common stock, $0.10 par value   UNM   New York Stock Exchange 6.250% Junior Subordinated Notes due 2058 UNMA New York Stock Exchange Indicate by check mark whether the registrant is an emerging growth company as defined in 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). ☐ Emerging growth company ☐ If 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. Item 5.07    Submission of Matters to a Vote of Security Holders. Unum Group (the “ Company ” ) held its most recent Annual Meeting of Shareholders on May 21, 2026 (the “ Annual Meeting ” ). Matters submitted to shareholders at the Annual Meeting and voting results were as follows: Item 1 - Election of Directors. Shareholders elected the eleven director nominees listed below for one-year terms expiring in 2027, based upon the following voting results: Nominee For Against Abstain Broker Non-Vote Susan L. Cross 124,604,542 169,499 91,601 16,159,357 Susan D. DeVore 124,174,159 570,933 120,550 16,159,357 Joseph J. Echevarria 123,987,839 753,990 123,813 16,159,357 Cynthia L. Egan 123,270,599 1,499,166 95,877 16,159,357 Kevin T. Kabat 122,310,066 2,458,379 97,197 16,159,357 Timothy F. Keaney 123,467,402 1,298,347 99,893 16,159,357 Gale V. King 124,444,117 322,924 98,601 16,159,357 Mojgan M. Lefebvre 124,554,145 209,182 102,315 16,159,357 Kristi A. Matus 124,582,562 187,544 95,536 16,159,357 Richard P. McKenney 124,177,480 588,719 99,443 16,159,357 Ronald P. O'Hanley 123,289,966 1,474,779 100,897 16,159,357 Item 2 - Advisory Vote to Approve Executive Compensation. Shareholders approved, on an advisory basis, the compensation of the Company ’ s named executive officers, based upon the following voting results: For Against Abstain Broker Non-Vote 119,731,115 4,904,980 229,547 16,159,357 Item 3 - Ratification of Appointment of Independent Registered Public Accounting Firm. Shareholders ratified the appointment of Ernst & Young LLP as the Company ’ s independent registered public accounting firm for 2026, based upon the following voting results: For Against Abstain Broker Non-Vote 137,247,622 3,579,402 197,975 0 SIGNATURES Pursuant 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. Unum Group (Registrant) Date: May 22, 2026 By: /s/ J. Paul Jullienne Name: J. Paul Jullienne Title: Vice President, Managing Counsel, and Corporate Secretary