About Us

Ownership

White Mountains Reinsurance Company of America is the domestic U.S. arm of the White Mountains Re Group. We work closely with the other operating units in the Group, notably White Mountains Re Bermuda-specializing in Property Cat exposures, and with Sirius International, our European-based operating company.

 

Offices

White Mountains Reinsurance Company of America is headquartered in New York City and has underwriting offices there as well as in Greenwich, Connecticut; Miami; and Toronto.

 

Strength

  • $780 million in regulatory capital
  • $2.67 billion in assets
  • $421million in gross annual premiums
  • A.M. Best rating of "A-" (Excellent) 
  • Standard & Poor's rating of "A-" (Excellent)

 

Business

  • Property, both treaty and facultative
  • Casualty treaty 
  • Accident & Health treaty 
  • Marine & Energy Treaty
  • Credit & Bond Treaty