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(Mark One) 

# UNITED STATES SECURITIES AND EXCHANGE COMMISSION 

WASHINGTON, D. C. 20549 

# FORM 10-K 

☒ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 

# For the fiscal year ended December 31, 2020 

☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 

(State or other jurisdiction of incorporation or organization) 

1 Fountain Square Chattanooga, Tennessee 

(Address of principal executive offices) 

Delaware 

Securities registered pursuant to Section 12(b) of the Act: 

Commission file number 001-11294 

(Exact name of registrant as specified in its charter) 

(Registrant's telephone number, including area code) 

For the transition period from to 

# Unum Group 

(423)294-1011 

(I.R.S. Employer Identification No.) 

62-1598430 

37402 

(Zip Code) 

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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 [ ] 

