Leadership

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.

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.

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. and Marvell Technology Group Ltd. He previously served as a director of Xperi, Inc. and also 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.

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.

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.

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.

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.Sc in chemistry from the University of Bath, UK.

Dr. Roby was elected a director of our company in June 2021. She most recently served as an Executive Vice President and Member of the Management Committee of Linde plc, a leader in industrial and specialty materials for the semiconductor and other industries, from September 2017, upon Linde’s merger with Praxair, Inc., until her retirement in July 2020. Her tenure at Linde capped a more than 25 year career at Praxair prior to the merger, culminating in her serving as a Senior Vice President and Member of the Office of the Chairman from 2014 to 2017. Prior to this, she was the President, Praxair Asia and Electronics, based in Shanghai, China, for four years. Dr. Roby is the Vice Chair of the Board of the Nuvance Health Network, and is a Trustee of Villanova University. She received her B.Sc. from Villanova University, and her Ph.D. from the University of Delaware, both in Chemical Engineering, and is a Member of the National Academy of Engineering.

David H. Li has served as our President and Chief Executive Officer, and as a director of our Company, 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 held various leadership roles throughout our business, including in regional and product line management, operations, supply chain 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.

Scott D. Beamer has served as our Vice President and Chief Financial Officer since January 2018. Prior to joining us, Mr. Beamer served as Vice President and Chief Financial Officer of Stepan Company from August 2013. Before that, he held various senior finance roles over a 16-year career at PPG Industries, Inc., including serving as its CFO – Europe, and as its Assistant Corporate Controller. Mr. Beamer has a B.S. in Accounting from Bloomsburg University, and an M.B.A. from the University of Pittsburgh, and began his career at Ernst & Young.

H. Carol Bernstein has served as our Vice President, Secretary and General Counsel since August 2000. Prior to joining us, Ms. Bernstein served in various senior leadership roles, including as the General Counsel and Director of Industrial Technology Development of Argonne National Laboratory/the University of Chicago, and as over a thirteen-year career at the IBM Corporation, as an Associate General Counsel of the IBM Corporation, and as the Vice President, Secretary and General Counsel of Advantis Corporation, an IBM joint venture. Ms. Bernstein received her B.A. from Colgate University in History and Political Science, and her J.D. from Northwestern University; she is a member of the Bar of the States of Illinois and New York.

Jeff Dysard has served as our Vice President and President, Performance Materials since January 2019, and prior to that had served as the General Manager of CMP Slurries, since October 2017, following serving as the General Manager of CMP Pads, from October 2015. Prior to that, Dr. Dysard held a variety of leadership roles in our R&D and product line organizations since joining us in 2004. Before that, he was a scientist with ExxonMobil. Dr. Dysard received a B.S. in Chemistry from the University of Chicago, and a Ph.D. in Chemistry from the University of California, Berkeley.

Colleen Mumford has served as our Vice President of Communications and Marketing since September 2019. Prior to that, Ms. Mumford served as our Corporate Relations Director since March 2018, responsible for Investor Relations, Corporate Communications and Marketing Communications. Ms. Mumford joined us in 1997, and has held various positions, including as North America Quality Director, among other leadership roles in research and development, operations, and human resources. Ms. Mumford received a B.S. in Ecology, Ethology and Evolution from the University of Illinois.

Eleanor K. Thorp has served as our Vice President, Human Resources since September 2018. Ms. Thorp rejoined our company after serving as the Head of Human Resources and Recruiting at Sephora Digital SEA, from 2015 through 2018, based in Singapore. Prior to that, Ms. Thorp was Cabot Microelectronics’ Human Resources Director of Asia Pacific from 2013 through 2015. Before this, she was Head of Human Resources and Recruiting at Frontier Strategy Group, and also spent time in executive search, working across a wide range of industries, based first in London and then in New York. Ms. Thorp graduated from the University of Cambridge (England) with a B.A. in Social and Political Science.

Daniel D. Woodland has served as our Vice President and President, Electronic Materials since November 2018, and prior to that had served as our Vice President and Chief Marketing and Operations Officer since October 2017 and Vice President of Marketing since January 2015. Previously, Dr. Woodland served in various product line, marketing and research and development leadership roles since joining us in 2003. Before joining our Company, Dr. Woodland held management roles at OMNOVA Solutions. Dr. Woodland received a B.A. in Physics from the University of California, Berkeley, and a Ph.D. in Physics from the University of Maine.