X0306 4 2016-01-20 0 0000944695 HANOVER INSURANCE GROUP, INC. THG 0001227471 HUBER J KENDALL C/O THE HANOVER INSURANCE GROUP, INC. 440 LINCOLN ST. (E-10) WORCESTER MA 01653 0 1 0 0 Executive Vice President Common Stock 2016-01-20 5 J 0 E 3146 0 D 36409 D Common Stock 2016-01-20 5 J 0 E 3146 0 A 3146 I Deferral Agreement Common Stock 2016-01-20 4 F 0 851 76.9 D 35558 D On January 20, 2016, restricted stock units that were previously granted by the Issuer vested. The Reporting Person was required by the Issuer to defer the receipt of a portion of these shares pursuant to an existing deferral agreement. The deferred shares were transferred to a Rabbi Trust and are held indirectly by the Reporting Person. Represents shares that were forfeited to pay withholding taxes upon the vesting of restricted stock units that were previously granted by the Issuer. /s/ Matthew R. Frascella pursuant to Confirming Statement 2016-01-22