The Hanover Insurance Group, Inc. (NYSE:THG - Get Free Report) EVP Denise Lowsley sold 4,175 shares of the stock in a transaction that occurred on Thursday, May 14th. The stock was sold at an average price of $191.73, for a total value of $800,472.75. Following the completion of the transaction, the executive vice president directly owned 3,883 shares of the company's stock, valued at approximately $744,487.59. The trade was a 51.81% decrease in…