Sean M. Stack
Executive Vice President & Chief Financial Officer
Sean M. Stack has served as Executive Vice President and Chief Financial Officer since February 2009. He joined Commonwealth Industries in June 2004 as Vice President and Treasurer and became Senior Vice President and Treasurer in December 2004 upon the merger with IMCO Recycling. During his tenure at Aleris, he held roles of increasing responsibility including Executive Vice President, Corporate Development and Strategy, and Executive Vice President and President, Aleris Europe. Prior to joining Aleris, Mr. Stack served as Vice President and Treasurer of Noveon, Inc. beginning in March 2001. Prior to joining Noveon, he held senior level finance roles at Specialty Foods and ABN AMRO Bank.