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About Patrick George Ryan
Patrick G. Ryan is an American billionaire insurance businessman. He is the founder and retired chairman and CEO of Aon Corporation. In 2010, he founded Ryan Specialty Group (RSG) as a holding company aimed at providing specialty services to insurance brokers, agents and carriers. RSG's first subsidiary, ThinkRisk, began business in December 2009 to provide underwriting and claims management services for media, technology, advertising and network security.
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