THG 2018 Annual Report

THE HANOVER INSURANCE GROUP | 2018 ANNUAL REPORT REGISTRAR & STOCK TRANSFER AGENT Computershare Investor Services P.O. Box 505000 Louisville, KY 40233-5000 800-317-4454 INDEPENDENT ACCOUNTANTS PricewaterhouseCoopers LLP 101 Seaport Boulevard Suite 500 Boston, MA 02210 CORPORATE OFFICE The Hanover Insurance Group, Inc. 440 Lincoln Street Worcester, MA 01653 508-855-1000 PRINCIPAL SUBSIDIARIES The Hanover Insurance Company 440 Lincoln Street Worcester, MA 01653 Citizens Insurance Company of America 808 North Highlander Way Howell, MI 48843 FINANCIAL STRENGTH RATINGS A.M. BEST STANDARD & POOR’S MOODY’S The Hanover Insurance Company A A A3 Citizens Insurance Company of America A A – DEBT RATING THE HANOVER INSURANCE GROUP, INC. A.M. BEST STANDARD & POOR’S MOODY’S Senior Debt bbb BBB Baa3 Subordinated Debentures bb+ BB+ Ba1 INVESTOR INFORMATION For more information, including our annual report on Form 10-K, quarterly reports on Form 10-Q and other documents filed with the Securities and Exchange Commission, please visit our website at hanover.com under “Investors.” Alternatively, investors may contact: Oksana Lukasheva Vice President, Investor Relations and Financial Planning The Hanover Insurance Group, Inc. 508-855-2063 olukasheva@hanover.com