Mr. Hemmerdinger oversees the properties and service subsidiaries of ATCO, as well as its parent company, The Hemmerdinger Corporation and The Hemmerdinger Foundation. Appointed by Governor Eliot Spitzer, he served as Chairman of New York’s Metropolitan Transportation Authority and formerly served as Commissioner of the New York City Conciliation and Appeals Board during the Koch Administration. Mr. Hemmerdinger is active in many public and private organizations. These include Trustee of New York University, Chairman of its Alumni Relations Committee and Public Affairs Committee; Trustee of the New York City Police Foundation (serving as Secretary/Treasurer); President of the Realty Foundation of New York; Honorary Chair and Trustee of the Citizens Budget Commission. He is a licensed New York State Real Estate Broker. A graduate of Riverdale Country School, Mr. Hemmerdinger received his B.A, and studied for an M.A at New York University.