The Navigators Group says its principal underwriting agency subsidiary, Navigators Management Company, has named Timothy D. Ryan president of the excess casualty unit of Navigators Specialty, which focuses exclusively on U.S. wholesale brokers.

Prior to joining Navigators, Ryan was executive vice president & chief excess casualty officer at Aspen Insurance.

He has also served in various leadership positions with Carolina Casualty Insurance Company (W.R. Berkley) and General Star Management Company (General Re). He reports to Jeff L. Saunders, president of Navigators Specialty, who has until now also served as president of the Specialty Excess Casualty unit.

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