X0306 4 2021-12-30 0000944695 HANOVER INSURANCE GROUP, INC. THG 0001428157 Roche John C C/O THE HANOVER INSURANCE GROUP, INC. 440 LINCOLN STREET WORCESTER MA 01653 1 1 0 0 President and CEO Common Stock 2021-12-30 4 A 0 115.022 0 A 61652.700 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. Does not include 7,652 shares held indirectly by the Reporting Person's spouse. /s/ Matthew R. Frascella pursuant to Confirming Statement 2022-01-04