HANOVER INSURANCE GROUP, INC.

The Hanover Insurance Group, Inc. (THG) is a holding company, organized in Delaware in 1995, with roots tracing back to The Hanover Fire Insurance Company founded in 1852. THG's primary business involves property and casualty insurance products and services, which it markets through independent agents and brokers across the United States. Its consolidated financial statements include THG itself, its main property and casualty subsidiaries The Hanover Insurance Company and Citizens Insurance Company of America, and other insurance and non-insurance subsidiaries. The company operates through four reporting segments: Core Commercial, Specialty, Personal Lines, and Other. Interest expense from corporate debt is reported separately. The Core Commercial, Specialty, and Personal Lines segments underwrite and distribute insurance products through Hanover Insurance, Citizens, and other THG subsidiaries via independent agents and brokers throughout the U.S. The Other segment primarily consists of earnings and expenses related to the holding company. THG focuses on providing specialized insurance products and services with disciplined underwriting and pricing, quality claims handling, and customer service. In 2025, the company generated approximately $6.3 billion in net premiums written, representing a 3.9% increase from the prior year.