Steven J. Demetriou is Chair of the Board. He has over 30 years of global business leadership experience, including 14 years in the role of Chief Executive Officer. Most recently he served as Chairman and CEO of Aleris Corporation, a global downstream aluminum producer based in Cleveland. Over the course of his career, he has gained broad experience with companies in a range of industries including Metals, Specialty Chemicals, Oil & Gas, Manufacturing and Fertilizers. His career highlights include 16 years at Exxon Mobil, where he held roles of increasing responsibility in the U.S. and Europe in operations, commercial, financial and general management.