Board of Directors


Board of Directors

William P. Noglows Chairman of the Board
David H. Li President and Chief Executive Officer
Richard S. Hill   Former Chairman and Chief Executive Officer,
Novellus Systems Inc.
Barbara A. Klein   Former Chief Financial Officer,
CDW Corporation
Paul J. Reilly   Former Executive Vice President,
Arrow Electronics, Inc.
Susan M. Whitney Former General Manager,
IBM Corporation
Geoffrey Wild   Chief Executive Officer,
Atotech Group

William P. Noglows


Mr. Noglows has served as our Chairman since 2003, and was our President and Chief Executive Officer from November 2003 through December 2014. Mr. Noglows also is a director of Aspen Aerogels, Inc. and Littelfuse, Inc. From 1984 through 2003, he served in various management positions at Cabot Corporation, culminating in serving as an executive vice president and general manager. Mr. Noglows had previously served as a director of our company from December 1999 until April 2002. Mr. Noglows received his B.S. in chemical engineering from the Georgia Institute of Technology.

Back to top

David H. Li


Mr. Li was elected a director of our company in January 2015. Mr. Li has served as our President and Chief Executive Officer since January 2015. From June 2008 through December 2014, Mr. Li served as our Vice President of the Asia Pacific Region. Prior to that role, Mr. Li served in various leadership roles, including as our Managing Director of China and Korea, and our Global Business Director for Tungsten and Advanced Dielectrics. Prior to that, he held a variety of leadership positions in operations, sourcing and investor relations since joining us in 1998. Mr. Li received a B.S. in chemical engineering from Purdue University and an M.B.A. from Northwestern University.

Back to top

Richard S. Hill


Mr. Hill was elected a director of our company in June 2012. Mr. Hill retired as the Chairman and Chief Executive Officer of Novellus Systems, Inc. in June 2012 after serving in these positions since 1996, and since 1993 as CEO upon his joining Novellus. Prior to leading Novellus, Mr. Hill held various senior leadership and management positions with Tektronix, Inc., General Electric, Inc., Motorola, Inc., and Hughes Aircraft, Inc. Mr. Hill also serves as a director of Arrow Electronics, Inc., Xperi, Inc., and Marvell Technology Group Ltd.  He also served as Interim Chief Executive Officer of Symantec, Inc. from May to November 2019, and had served as a director until December 2019. He received a B.S. in bioengineering from the University of Illinois and a M.B.A. from Syracuse University.

Back to top

Barbara A. Klein


Ms. Klein was elected a director of our company in April 2008. Ms. Klein also is a director of Ingredion, Inc. She retired in May 2008 as the Senior Vice President and Chief Financial Officer of CDW Corporation. Prior to that, Ms. Klein held a variety of senior finance positions including Vice President and Chief Financial Officer of Dean Foods Company, Vice President and Corporate Controller of Ameritech Corporation, and Vice President and Corporate Controller of Pillsbury Co. Ms. Klein received a B.S. in accounting and finance from Marquette University, and an M.B.A. from Loyola University.

Back to top

Paul J. Reilly


Mr. Reilly was elected a director of our company in March 2017. Mr. Reilly served as an executive vice president of Arrow Electronics, Inc. through his retirement in January 2017, and previously had served as its executive vice president, finance and operations, and chief financial officer from 2001 through May 2016, and head of global operations from 2009 through May 2016. Prior to joining Arrow in 1991, Mr. Reilly was a certified public accountant in the business assurance practice of the New York office of KPMG Peat Marwick. Mr. Reilly also serves as a director of Assurant, Inc., and previously served as a director of comScore, Inc. He has a B.S. in accounting from St. John’s University.

Back to top

Susan M. Whitney


Ms. Whitney was elected a director of our company in April 2015. Ms. Whitney, a 35-year veteran of the IBM Corporation, retired as the General Manager of IBM System X in 2007 after leading the IBM Server Group, and directing IBM’s global x86-based server division. Prior to that, she served in numerous executive leadership roles, including marketing and sales responsibilities for the IBM Asia Pacific and IBM Midwest organizations. Ms. Whitney also serves as a trustee of the College of Mt. St. Vincent, and served as a director of LSI Logic Corporation prior to its acquisition by Avago Technologies, Ltd. in 2014. She received her B.A. in mathematics and economics from the College of Mt. St. Vincent.

Back to top

Geoffrey Wild


Mr. Wild was elected a director of our company in September 2015. Mr. Wild has served as the Chief Executive Officer of Atotech since March 2017, and previously was the Chief Executive Officer of AZ Electronic Materials from January 2010 until April 2015. Prior to that, he was President and Chief Executive Officer of Cascade Microtech, Inc., having previously served as Chief Executive Officer of Nikon Precision, Inc. Mr. Wild previously served as a director of Materion Corporation, and Axcelis Technologies, Inc. He received his B.S. in chemistry from the University of Bath, UK.

Back to top