Mark A. Pytosh joined Covanta on September 1, 2006 as Senior Vice President and Chief Financial Officer. He was promoted to Executive Vice President and Chief Financial Officer in December 2007. Immediately prior to joining Covanta, Mr. Pytosh served as Executive Vice President and Chief Financial Officer of Waste Services, Inc. Previously, Mr. Pytosh served as Managing Director in Investment Banking at Lehman Brothers where he led the firm's Global Industrial Group. Mr. Pytosh also had 15 years of senior investment banking experience at Donaldson, Lufkin & Jenrette and Kidder, Peabody.