X0303 4/A 2010-02-23 2010-02-25 0 0000005513 Unum Group UNM 0001184085 BEST ROBERT O 1 FONTAIN SQUARE CHATTANOOGA TN 37402 0 1 0 0 EVP, COO, Unum US Common Stock 2010-02-23 4 F 0 2491.0 20.83 D 218481.0 D Represents shares withheld to satisfy tax withholding obligation upon vesting of 9,103 shares of restricted stock. Represents beneficial ownership as of March 4, 2010, which includes 74,674 restricted stock units, 4,678 shares in the company ESPP, and 139129 shares held outside any plan. This filing amends line 1 of the Form 4 filed on February 25, 2010 to correct an administrative error with respect to the number of shares reported as withheld to satisfy the tax withholding liability. This error also resulted in the over-reporting of the amount of securities beneficially owned by the reporting person as reported in Column 5 of Table I of the original Form 4. /s/ Jullienne, J. Paul, Attorney-in-Fact 2010-03-04