John T.C. Lee, PhD

2024 Pinnacle Awardee

President and Chief Executive Officer

MKS Instruments Inc

Dr. Lee has served as President and Chief Executive Officer of MKS Inc. since January

2020. Dr. Lee joined MKS in 2007 and has held a number of senior leadership

positions, including President and Chief Operating Officer, Senior Vice President and Chief Operating Officer, and leadership roles managing various business units, culminating in Senior Vice President of Business Units.

Prior to joining MKS, Dr. Lee held senior management roles at Applied Materials, Inc. from 2002 to 2007, including Managing Director of Factory Technology and Projects

within the Solar Business Group and General Manager of the Cleans Product Group

and the Maydan Technology Center. Prior to Applied Materials, Dr. Lee served from

1997 until 2002 as Research Director of the Silicon Fabrication Research Department at

Lucent Technologies, Inc. From 1991 until 1997, he was a Member of the Technical

Staff in the Plasma Processing Research Group within Bell Labs.

He has served on the MKS Board of Directors since 2020 and on the board of directors

of Cognex Corporation since 2022. He has also served as Co-Chair of the Mass

Opportunity Alliance since 2024 and as a member of the Executive Committee of the

Board of Directors of the Massachusetts High Technology Council (MHTC) since 2021.

He also served as Chair of MHTC from 2023 to 2025.

Dr. Lee holds a B.S. from Princeton University and both an M.S.CEP and a PhD from

the Massachusetts Institute of Technology, all in Chemical Engineering.