The Bermuda-based reinsurance unit of the White Mountains Insurance Group, Ltd. has announced a number of changes at the executive level.

Chuck Chokel has been appointed managing director and chief financial officer at White Mountains Re where he will be responsible for all financial functions for the reinsurance unit.

Previously he served as the general auditor and managing director at White Mountains Insurance Group, Ltd.

Mike Tyburski has been named president of White Mountains Re Services, Inc., a unit of the reinsurer that provides a broad range of administrative and functional services across the group globally. He was previously a managing director at White Mountains Re.

Christine Repasy has joined the reinsurance group as a managing director and will serve as general counsel. Previously, she served as associate general counsel of White Mountains Insurance Group and director of Litigation. Bill Hunter has joined the reinsurance organisation as a managing director and will assume broad operational and marketing responsibilities including Enterprise Risk Management.

Mr. Hunter has held executive roles at companies in both the reinsurance and information technology sectors, and also worked as a management consultant with McKinsey and Company, Inc.

Tom Hutton, president and CEO of White Mountains Re, said: ?We are thrilled to have attracted such high calibre executives to the management team at White Mountains Re.

?In our industry, the greatest competitive advantages stem from people and intellectual capital. This group will provide us with a tremendous boost, and will set a high standard across the company.?