X0508 4 2025-03-28 0000944695 HANOVER INSURANCE GROUP, INC. THG 0001958694 LOVELY DAVID JOHN C/O THE HANOVER INSURANCE GROUP, INC. 440 LINCOLN STREET WORCESTER MA 01653 0 1 0 0 Executive Vice President 0 Common Stock 2025-03-28 4 A 0 11.691 0 A 2254.138 D Grant of restricted stock units ("RSUs") under the Issuer's 2022 Long-Term Incentive Plan ("2022 LTIP") in connection with the accrual of dividend equivalent rights associated with RSUs previously granted under the Issuer's 2022 LTIP. Such RSUs vest on the third anniversary of the date of grant of the original underlying RSUs. /s/ Lindsay L. Katz pursuant to Confirming Statement 2025-04-01