Steven J. Demetriou

Steven J. Demetriou Chairman and Chief Executive Officer Aleris International, Inc.

Steven J. Demetriou is Chairman and Chief Executive Officer of Aleris International, Inc., an aluminum company with approximately $4 billion of revenues. Aleris International, Inc. is a global leader in aluminum rolled products and extrusions, aluminum recycling and specification alloy production that is headquartered in Beachwood, Ohio, a suburb of Cleveland. The Company operates production facilities in North America, Europe, South America and Asia. Mr. Demetriou also serves on the board of publicly held OM Group, Inc., Foster Wheeler Ltd. as well as privately held KRATON Polymers. Mr. Demetriou is Chairman of the Aluminum Association.

Before joining Commonwealth in 2004, Mr. Demetriou was President and Chief Executive Officer of privately held Noveon, Inc. and led the sale of this leading global specialty chemical company to Lubrizol Inc. in June, 2004. Prior to that, he held senior executive positions at IMC Global, Cytec Industries and ExxonMobil Corporation.

Mr. Demetriou received a B.S. degree in Chemical Engineering from Tufts University.