X0306 4 2022-03-25 0000944695 HANOVER INSURANCE GROUP, INC. THG 0001576903 Welzenbach Mark Joseph C/O THE HANOVER INSURANCE GROUP, INC. 440 LINCOLN STREET WORCESTER MA 01653 0 1 0 0 Executive Vice President Common Stock 2022-03-25 4 A 0 15.568 0 A 22485.088 D Grant of restricted stock units under the Issuer's 2014 Long-Term Incentive Plan upon the accrual of dividend rights associated with restricted stock units previously granted by the Issuer. Such units vest on the third anniversary of the date of grant of the underlying restricted stock units. /s/ Matthew R. Frascella pursuant to Confirming Statement 2022-03-29