Company Update

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): November 12, 2020 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 8.01    Other Events. On November 12, 2020, Unum Group (the “Company”) announced a leadership transition for its Unum International business. Mark Till will join the Company’s operations in the U.K. on February 1, 2021 before his official appointment as the Company’s Executive Vice President and Chief Executive Officer, Unum International, effective April 1, 2021, subject to regulatory approval. Mr. Till will succeed Peter G. O’Donnell, the Company’s current Executive Vice President, Unum International, who will transition his responsibilities to Mr. Till before stepping down and leaving the Company effective March 31, 2021 to pursue a portfolio career. In his new role, Mr. Till will report to the Company’s Chief Operating Officer. Mr. Till has served as Managing Director, Platform Solutions at Aegon since July 2020, with responsibility for all aspects of the Aegon UK business revenue and proposition for intermediaries and their customers. While at Aegon UK, he previously served as Managing Director, Digital Solutions from February 2018, and before that as Chief Distribution and Marketing Officer from September 2015. A copy of the news release announcing the Unum International leadership transition is filed herewith as Exhibit 99.1 and incorporated herein by reference. Item 9.01      Financial Statements and Exhibits. (d) Exhibits. Exhibit No. Description 99.1 News release of Unum Group dated November 12, 2020, announcing leadership transition for Unum International business. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). 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: November 12, 2020 By: /s/ J. Paul Jullienne Name: J. Paul Jullienne Title: Vice President, Managing Counsel, and Corporate Secretary