Annual report
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( Mark One ) UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D. C. 20549 Annual Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the fiscal year ended December 31 , 2020 FORM 10 - K Transition Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the transition period from to Commission file number 001-11294 Unum Group ( Exact name of registrant as specified in its charter ) Delaware ( State or other jurisdiction of incorporation or organization ) 1 Fountain Square Chattanooga , Tennessee ( Address of principal executive offices ) Title of each class Common stock , $ 0.10 par value 6.250 % Junior Subordinated Notes due 2058 (423)294-1011 ( Registrant's telephone number , including area code ) 62-1598430 ( I.R.S. Employer Identification No. ) Trading Symbol UNM UNMA Securities registered pursuant to Section 12 ( b ) of the Act : 37402 ( Zip Code ) Name of each exchange on which registered New York Stock Exchange New York Stock Exchange Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the registrant is a well - known seasoned issuer as defined in Rule 405 of the Securities Act . Yes [ X ] No [ ] Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes [ ] No [ X ] Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes [ X ] No [ ] Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes [ X ] No [ ]