X0306 4 2021-05-11 0000944695 HANOVER INSURANCE GROUP, INC. THG 0001227468 KNOX WENDELL J C/O THE HANOVER INSURANCE GROUP, INC. 440 LINCOLN STREET WORCESTER MA 01653 1 0 0 0 Common Stock 2021-05-11 4 A 0 980 0 A 2467 I Deferral Agreement Shares granted pursuant to the Issuer's 2014 Long-Term Incentive Plan. Does not include 29,715 shares held directly by the Reporting Person. /s/ Matthew R. Frascella pursuant to Confirming Statement 2021-05-13