Columbia Insurance Group is a subsidiary of the Berkshire Hathaway Reinsurance Group, which provides treaty and limited facultative reinsurance to other property and casualty insurers and reinsurers. The company is one of the world s leading providers of catastrophe excess of loss reinsurance. As a member of the Berkshire Hathaway Group, the Berkshire Hathaway Reinsurance Group is able to offer unparalleled financial strength. It maintains an A++ rating from A.M. Best. Berkshire s insurance businesses provide insurance and reinsurance of property and casualty risks throughout the world and also reinsures life, accident and health risks worldwide. The company s insurance and reinsurance business activities are conducted through nearly 60 domestic and foreign-based insurance entities. Columbia Insurance Group maintains operations in Omaha, Neb.