Board of Directors

Dr. Arnold was Chief Technology Officer of The Valspar Corporation, a global paint and coatings company, from 2011 until her retirement in 2017. During her tenure with Valspar she was responsible for technology strategy, project portfolio and organizational development of the global technology function across eight Valspar businesses. Prior to joining Valspar in 2011, Dr. Arnold served as Chief Technology Officer at Sun Chemical Corporation, a producer of inks, coatings and supplies, pigments, polymers, liquid compounds, solid compounds and application materials. She is also a member of the Board of Directors for Fluence, a global provider of energy storage products as well as Milliken & Company, a global diversified industrial company for specialty chemicals, performance materials and textiles, and Citrine Informatics, an AI/machine learning software provider for chemical and material companies.

Mr. Del Grosso was president and chief executive officer of Adient plc, an automotive seating manufacturer from October 2018 until his retirement in December 2023. Prior to joining Adient, Mr. Del Grosso was president and chief operating officer of Chassix Inc., a privately held automotive parts supplier, from 2016 until 2018, and president and chief executive officer of Henniges Automotive, a manufacturer of automotive sealing and anti-vibration systems, from 2012 until 2015. Mr. Del Grosso holds a Bachelor of Science degree with a major in mechanical engineering from Lawrence Technological University, and a Master of Business Administration degree from Eli Broad College of Business at Michigan State University. Mr. Del Grosso serves on the Board of Directors of Pangea, a global leather supplier to the world’s leading automotive brands. He also serves as a trustee of The Committee for Economic Development of The Conference Board (CED). His CED activities include co-chairing the CED Trade and Economic Globalization Committee, being a member of the Education Committee and serving as a member of the CED Task Force on Climate, The Environment, and Energy.

Mr. Enriquez has served as Chairman of the Board of Directors and Chief Executive Officer of Biotechonomy Ventures, a life sciences research and investment firm, since 2003 and Managing Director of Excel Venture Management, a life sciences investment company, since March 2008. Prior to that, Mr. Enriquez served as Director of the Life Science Project at Harvard Business School from 2001 to 2003. He is also a member of the Board of Directors of various start-up companies.

Mr. Keohane became President and Chief Executive Officer of Cabot Corporation in March 2016. Mr. Keohane joined Cabot in 2002 in the carbon black business. Since joining the company, he has held several key management positions including general manager of the Performance Product business group, global marketing director for the carbon black businesses, senior vice president and president of the Performance Materials Segment, and president of the Reinforcement Materials segment. Prior to joining Cabot, Mr. Keohane worked for Pratt & Whitney, a division of United Technologies in a variety of general management positions. Mr. Keohane is also a member of the Board of Directors of the American Chemistry Council, a trade association representing the business of chemistry at the global, national and state levels as well as a member of the Board of Directors of The Chemours Company, a global provider of performance chemicals. Mr. Keohane earned his MBA from Harvard University and a BS in Finance from Providence College.

Mr. Kirby is the Spangler Family Professor of Business Administration at the Harvard Business School and T.M. Chang Professor of China Studies at Harvard University, positions he has held since July 2008. Since July 2006, he has also been a Harvard University Distinguished Service Professor and Chairman of the Harvard China Fund. A Harvard faculty member since 1992, Mr. Kirby has served as Chair of Harvard’s History Department, Director of the Harvard University Asia Center, Dean of the Faculty of Arts and Sciences, and Director of the Fairbank Center for Chinese Studies. Mr. Kirby also serves on the Board of Directors of The Taiwan Fund, Inc., a diversified closed-ended management investment company and served on the Board of Directors of The China Fund, Inc., a non-diversified closed-ended management investment company from 2007 to 2019.

Mr. Morrow was elected Non-Executive Chair of the Board effective October 1, 2023.

Mr. Morrow joined PricewaterhouseCoopers (PwC), a public accounting firm, in 1977 and retired from the partnership in June 2016. Mr. Morrow was a consultant to PwC from the time of his retirement until June 2017. During his tenure, he served as both an audit and overall relationship partner, and also held a variety of leadership positions as well as significant governance roles. Mr. Morrow is a member of the Financial Accounting Standards Advisory Committee, an advisory body to the Financial Accounting Standards Board and as of January 2020, also serves as Chairman. Mr. Morrow was a member of PwC’s Global Board of Partners and served as the Lead Director for PwC’s U.S. Board of Partners. He also previously served as a member of the Boards of the business schools at Wake Forest University and the University of Rhode Island.

Mr. Nathoo has served as a Managing Partner of TX3 Sage Rock, a private investment management firm, since August 2019. Mr. Nathoo has 30 years of experience which spans the investment banking, private equity, and public equity businesses, including over 22 years at Blackstone where he was a Senior Managing Director for 14 years and led the firm’s advisory practice globally in the energy, power and utilities sectors, with New Mountain Capital where he served as an Executive-in-Residence, and with Salomon Brothers Inc. where he started his career. During this time, he has played a range of business and transaction leadership roles. Mr. Nathoo received his Bachelor of Arts degree in Government from Dartmouth College, and a Master of Business Administration degree from Harvard University. He is a member of the Council on Foreign Relations.

Mrs. Rataj served as Non-Executive Chair of the Board from March 2018 until October 1, 2023. Ms. Rataj was Chief Executive, Petrochemicals for BP, a global energy company, from April 2008 until her retirement in April 2011, with global responsibility for BP’s petrochemicals operations. Prior to that, Ms. Rataj held a variety of senior management positions with BP, most recently serving as Group Vice President, Refining and Marketing from July 2007 until April 2008. Ms. Rataj is also a member of the Board of Directors of Agilent Technologies, Inc., a global leader providing instruments, software and consumables to laboratories in the life sciences, diagnostics and applied chemical markets. Ms. Rataj was previously a member of the Supervisory Board of Bayer AG, a global life sciences enterprise, serving a five-year term that ended in 2017.

Dr. Williams was Global Group President of Altuglas International, a manufacturer of polymethyl methacrylate (PMMA) and a subsidiary of Arkema S.A., a manufacturer of specialty chemicals and advanced materials, from 2015 until her retirement in May 2021, and prior to that, served a Global Group President, Hydrogen Peroxide and Derivatives, at Arkema from 2011 until 2015. Prior to joining Arkema in 2011, she spent 23 years with Rohm and Haas Company and Dow Chemical in manufacturing, commercial, strategy and general management positions. She was General Manager, Chemical Mechanical Polishing Technologies, and later, General Manager, Adhesives and Sealants. Dr. Williams has been a Director of Brady Corporation, a manufacturer and supplier of identification solutions and workplace safety products, since 2019, where she serves as Chairperson of the Technology Committee and a member of the Management Development and Compensation and Corporate Governance Committees. Dr. Williams received her Bachelor of Science degree from Pace University and a PhD. From the University of Utah.

Mr. Wilson was Chief Financial Officer and Senior Vice President of PerkinElmer, Inc., a life sciences diagnostics, discovery and analytical solutions company, from 2009 until his retirement in 2018. Prior to joining PerkinElmer, he held key business development and finance roles over 12 years at the Danaher Corporation, the life sciences and industrial conglomerate, including Corporate Vice President of Investor Relations. Previously, Mr. Wilson worked for several years at AlliedSignal, Inc., now Honeywell International Inc., where he served as Vice President of Finance and Chief Financial Officer for Commercial Aviations Systems. His earlier experience included financial and controllership positions of increasing responsibility at PepsiCo Inc., as well as roles at E.F. Hutton and Company, and KPMG Peat Marwick. Mr. Wilson is a member of the Board of Directors of Alkermes, a fully integrated, global biopharmaceutical company and is a member of the Board of Directors of Novanta, a global supplier to medical and advanced industrial OEMS of core components and subsystems that deliver extreme precision and performance. He is also a Senior Advisor for Astor Place Holdings, the private investment arm of Select Equity Group L.P. Mr. Wilson previously served as member of the Board of Directors and Chair of the Audit Committee of Sparton Corporation, a provider of complex and sophisticated electromechanical devices, which was acquired by Cerberus. He is a Certified Public Accountant.

Dr. Wolfgruber was Chief Executive Officer of Altana AG, a global specialty chemicals company, a position he held from 2007 until his retirement in January 2016. He joined Altana in 2002, as President and Chief Executive Officer of Altana Chemie AG and a member of the management board of Altana AG. Prior to joining Altana, he held a number of management positions at Wacker-Chemie in the United States and Europe from 1985 through 2002. Dr. Wolfgruber is a Chairman of Altana AG and a Chairman of Lanxess AG, a leading global manufacturer of synthetic rubber and chemical intermediates. He also served as a member of the Supervisory Board of Grillo-Werke AG from 2014 through March 2021, a manufacturer and supplier of zinc alloy products and chemicals, and was a Chairman of Ardex Group, a global supplier of high-performance specialty building materials from 2015 through March 2021.

Ms. Yan retired in 2018 from the role of vice president of integration at Stanley Black & Decker where she led the company’s successful integration of Nelson Fastener Systems. Prior to this role, Ms. Yan served as President – Asia for Stanley Black & Decker based in Shanghai, China and President – Stanley Storage and Workspace Systems. She started her career at Black & Decker as an engineering intern in 1989 and progressed to be the first female business unit president for the company in 2006 when she became President of Global Automotive for the Engineered Fastening Business. Ms. Yan also serves as a director of Modine Manufacturing Company, onsemi, and Ansell Limited. She holds a Bachelor of Science degree from Shandong University in Shandong, China, a Master of Science in Mechanical Engineering degree from Wayne State University in Detroit, Michigan, and a Master of Business Administration degree from the University of Michigan’s Ross School of Business in Ann Arbor, Michigan.