0001193125-11-167891 Sample Contracts

The Hanover Insurance Group, Inc. $300,000,000 6.375% Notes Due 2021 Underwriting Agreement June 14, 2011

Underwriting Agreement • June 17th, 2011 • Hanover Insurance Group, Inc. • Fire, marine & casualty insurance • New York

• Contract Type
  Underwriting Agreement
• Filed
  June 17th, 2011
• Company
  Hanover Insurance Group, Inc.
• Industry
  Fire, marine & casualty insurance
• Jurisdiction
  New York

THE HANOVER INSURANCE GROUP, INC., as Issuer and U.S. Bank National Association, as Trustee SECOND SUPPLEMENTAL INDENTURE Dated as of June 17, 2011 to the Indenture dated as of January 21, 2010 6.375% Notes due 2021

Second Supplemental Indenture • June 17th, 2011 • Hanover Insurance Group, Inc. • Fire, marine & casualty insurance • New York

• Contract Type
  Second Supplemental Indenture
• Filed
  June 17th, 2011
• Company
  Hanover Insurance Group, Inc.
• Industry
  Fire, marine & casualty insurance
• Jurisdiction
  New York

SECOND SUPPLEMENTAL INDENTURE (this “Second Supplemental Indenture”), dated as of June 17, 2011, between The Hanover Insurance Group, Inc., a Delaware corporation (the “Company”), and U.S. Bank National Association, as Trustee (the “Trustee”).