Insider Transaction Report for Willard T. Lee

This report details a transaction by Willard T. Lee, Executive Vice President at The Hanover Insurance Group, Inc. (THG). On September 25, 2026, Mr. Lee acquired 10.640 shares of common stock under the Issuer's 2022 Long-Term Incentive Plan. This acquisition, valued at a price of $0.0 per share, was part of a grant of restricted stock units (RSUs) which included dividend equivalent rights. These RSUs vest on the third anniversary of the original grant date. Following this transaction, Mr. Lee now beneficially owns 6003.846 shares of common stock, with ownership designated as direct.