0001445305-13-000401 Sample Contracts

FIRST SUPPLEMENTAL INDENTURE to the INDENTURE dated as of November 9, 2012

First Supplemental Indenture • March 1st, 2013 • White Mountains Insurance Group LTD • Fire, marine & casualty insurance • New York

• Contract Type
  First Supplemental Indenture
• Filed
  March 1st, 2013
• Company
  White Mountains Insurance Group LTD
• Industry
  Fire, marine & casualty insurance
• Jurisdiction
  New York

THIS FIRST SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of November 9, 2012, is among ONEBEACON U.S. HOLDINGS, INC., a Delaware corporation (the “Company”), ONEBEACON INSURANCE GROUP, LTD., a company existing under the laws of Bermuda (the “Guarantor”), and THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., a national banking association, as trustee (the “Trustee”).