Ari Chester joined Argo in November 2023 as Head of Specialty, which includes Property, Marine, Garage, Tax Liability, Alternative Risk Transfer, and Reinsurance/Retrocession. Prior to Argo, Mr. Chester served as Head of Reinsurance for the U.S. and Canada at SiriusPoint. Earlier in his career, he was a Partner at McKinsey & Company, advising global insurers and reinsurers on underwriting transformation, risk management, and advanced analytics. Mr. Chester holds an MBA from The Wharton School of the University of Pennsylvania and a Bachelor of Fine Arts from New York University, and holds the CPCU, FLMI, and ARe designations.