Patrick Prevost

Mr. Prevost served as the President and Chief Executive Officer of Cabot Corporation (global specialty chemical and performance materials company) from January 2008 until his retirement in March 2016. Prior to Cabot, Mr. Prevost served as President, Performance Chemicals at BASF AG (international chemical company) from October 2005 to December 2007. Prior to that, he was responsible for BASF Corporation’s Chemicals and Plastics business in North America. Mr. Prevost previously held senior management positions with increasing responsibility at BP Plc from 1999 to 2003 and Amoco Chemicals from 1983 until 1999. Mr. Prevost serves on the Board of Directors of Southwestern Energy Company and Cabot Corporation and previously served on the Board of Directors of General Cable Corporation. Mr. Prevost brings to our Board of Directors substantial leadership experience in a variety of complex international businesses, a chemical engineering background with broad experience in material science and chemistry, which are important to our business, extensive experience involving acquisitions and strategic alliances and deep knowledge of international business, strategic planning, manufacturing and financial matters.