Allmerica Changes Name to The Hanover Insurance Group

October 31, 2005

Allmerica Financial Corporation announced that, effective Dec. 1, it will change its name to “The Hanover Insurance Group, Inc.” and that its stock will trade on the New York Stock Exchange under the stock ticker symbol “THG.”

“Over the past two years, we have created a very distinctive, super-regional property and casualty company; one that provides our agent partners and their customers with the product and service capabilities of a larger company and the energy and responsiveness of a smaller company,” said Frederick H. Eppinger, Allmerica’s president and chief executive officer.

“With that foundation now firmly in place, it is time to re-introduce our company to our agents and customers, reinforcing our commitments to them and building a brand that reflects our strength and experience.”

Allmerica is a holding company for a group of insurance companies including The Hanover Insurance Company, headquartered in Worcester, Mass., and Citizens Insurance Company of America, based in Howell, Mich. The new holding company name is taken from the largest and oldest company in the group, Hanover Insurance, which has been serving independent insurance agents for more than 150 years.

In conjunction with its name change, the company also will adopt a new corporate logo and tagline, “Our Policy is Performance,” The logo consists of the company name in type, along with a stylized eagle borrowed and refined from Allmerica’s current identity.

While the name change will be formally effective on Dec 1, the
company will begin a broad re-branding campaign immediately.

The company will use The Hanover Insurance Group as its primary identity in all of its markets except Michigan, where Citizens Insurance Company of America is a leading insurance provider and the company benefits from very strong brand recognition. In Michigan, the company will continue to lead with the Citizens name, and will identify Citizens as a company of The Hanover Insurance Group.