Aleris International, Inc. announced today that Sean M. Stack, currently Executive Vice President, Corporate Development and Strategy, has been named Executive Vice President and Chief Financial Officer.  Mr. Stack replaces Kevin L. Brown who recently joined Aleris in October 2008.  Mr. Stack joined Commonwealth in June 2004 as Senior Vice President and Treasurer and continued in that role until December 2007 when he was promoted to Executive Vice President and President, Europe.<br /><br />In order to ensure a smooth transition, Mr. Brown will remain with the Company through April 30, 2009. <br /><br />“I have taken this action to consolidate executive leadership positions consistent with our need to restructure and streamline our organization as we work through Chapter 11”, said Steven J. Demetriou, Chairman and Chief Executive Officer for Aleris International, Inc.  “Kevin joined Aleris during a very difficult period and his efforts and commitment have been very beneficial to our organization.” 