Mike O’Halleran is a reinsurance veteran who has spent his entire career in the reinsurance sector. Prior to joining RSG as a senior advisor, Mike was Executive Chairman and founder of Aon Benfield, the largest reinsurance brokerage and capital advisory firm in the world. Aon Benfield has operations in more than 50 countries and employs in excess of 4,000 professionals.
Mike was previously President and COO of Aon Corporation and has held senior operating positions throughout his 40 year career in the insurance and reinsurance industry.Back to List Next Bio
Unfortunately Microsoft is no longer providing support or security fixes for your web browser. Ryan Specialty Group values the safety and security of its clients’ data, and as such this site requires the use of a modern web browser. To update your web browser, please see the links below. If you have any questions or would like additional information, please email email@example.com or call (312) 784-6001.
|Firefox||Chrome||Internet Explorer||Microsoft Edge|