Dr. Walden “Wally” C. Rhines
Chief Executive Officer and Director
Walden C. Rhines, Ph.D., has served as our Chief Executive Officer since August 2025, and as a member of our board of directors since September 2022. From March 2020 to June 2025, Dr. Rhines served as President and Chief Executive Officer of Cornami, Inc., a fabless semiconductor company. Since 2015, Dr. Rhines has also served as a member of the board of directors and as chair of the compensation committee of Qorvo, Inc. (Nasdaq: QRVO), a semiconductor company, since January 2015 and its chairman since November 2023. He served as a member of the board of directors of PTK Acquisition Corp. (NYSE: PTK), a special purpose acquisition company from July 2020 until September 2021 and served on its audit, nominating and compensation committees. From October 1993 to March 2017, Dr. Rhines served as President and Chief Executive Officer of Mentor Graphics Corporation, an EDA company, and chairman of its board of directors from 2000 until its acquisition by Siemens in March 2017, pursuant to which the company was renamed Mentor Graphics, a Siemens Business. Following the acquisition, Dr. Rhines served as President and Chief Executive Officer of Siemens EDA (formerly Mentor Graphics, a Siemens Business), from March 2017 to October 2018, after which he served as its Chief Executive Officer Emeritus until September 2020. Dr. Rhines received a B.S.E. in metallurgical engineering from the University of Michigan, an M.S. and Ph.D. in materials science and engineering from Stanford University, and a M.B.A. from the Southern Methodist University, Cox School of Business.
Iliya Pesic
Director
Iliya I. Pesic has been a member of our Board of Directors and a member of our Nominating and Corporate Governance Committee since May 2025. He previously served as a member of our Board of Directors from November 2012 to October 2023, including as Chair of the Board of Directors from November 2012 to September 2014 and as Executive Chair of the Board of Directors from September 2014 to April 2021. Mr. Pesic also served on our Audit, Compensation, and Nominating and Corporate Governance Committees from May 2021 to October 2023, including as chair of our Compensation Committee from April 2021 until December 2021. Mr. Pesic holds a B.S. in electrical engineering from Santa Clara University and an M.S. in electronic engineering from Tohoku University in Japan.
Dr. Cheemin Bo-Linn
Director
Dr. Cheemin Bo-Linn has served as a member of our board of directors and as chair of our audit committee since April 2026. She also currently serves as Audit Chair of Kore Wireless (NYSE: Kore), a global leader in IoT connectivity, since 2021 and on the Advisory Board of Bain Capital Ventures, focused on domains including AI Apps, AI infrastructure, commerce, fintech, industrials, healthcare, and security, since 2024. Her governance experience includes Board Chair, Lead Independent Director, and Chair of every major committee including prior election as Audit Chair of four public companies. Her board experience includes prior election to nine public companies in the US, Canada, and Australia and multiple private companies. She is recognized as the National Association of Corporate Directors (NACD) “Top 50 Board of Directors,” Financial Times “Top 100 Diverse Board Directors” and Board Prospects “Top 100 Women Leaders in the Boardroom” amongst Board Chair and Lead Independent Directors. She has over 30 years in senior operating roles. Dr. Bo-Linn held C-suite roles at private growth to F500 public companies including as CEO of Peritus Partners, a valuation accelerator, through 2024, VP of IBM, M&A Partner, and various finance and business roles. She was inducted into the “Hall of Fame for Women in Technology,” a program supported since US Presidents Bush through Obama and also named “Top 100 CEOs in STEM” by StemConnector, was Visiting Professor of the Joint Executive MBA/MBA Program of Columbia University, London School of Business, and the University of Hong Kong in Finance and Digital Transformation and Technologies (AI, analytics, and cybersecurity), and was guest speaking faculty at New York University Law School, Stanford University, and NACD on corporate board governance, compliance, and technology. Dr. Bo-Linn has a EdD, Doctorate in Computer Based Information Systems and Organizational Change from the University of Houston and post-doctoral studies at Stanford University.
Dr. Theodore “Ted” Tewksbury
Director
Dr. Theodore “Ted” Tewksbury has served as a member of the Board and as a member of our Audit Committee since [April 2026]. Dr. Tewksbury has served as the Chair of the Board of Ouster, Inc., a provider of lidar sensors and software, since April 2024 and as the Executive Chairman from February 2023 to April 2024. From November 2021 to February 2023, Dr. Tewksbury served as CEO of Velodyne Lidar, Inc., a provider of lidar technologies that merged with Ouster, Inc. in February 2023. Prior to that, he was CEO of Eta Compute, a provider of ultralow power edge Al chips and software, from August 2019 to November 2021. Dr. Tewksbury has been a director of MaxLinear, Inc. (Nasdaq: MXL), a mixed-signal semiconductor company, since May 2015, where he chairs the Cybersecurity Committee and serves on the Audit and Nominating and Governance committees. From February 2011 to March 2019, Dr. Tewksbury was Chairman and CEO of Energy Focus, Inc., a provider of LED lighting systems and controls. Dr. Tewksbury was a director of Entropic Communications from September 2010 and CEO from November 2014 until MaxLinear’s acquisition of Entropic in April 2015. From 2013 to November 2014, he was an independent consultant to technology companies. From 2008 to 2013, Dr. Tewksbury served as CEO of integrated Device Technology, Inc. and, from 2006 to 2008, was president and Chief Operating Officer of AMI Semiconductor, both of which were public semiconductor companies. Prior to that, he held management and engineering leadership roles at Maxim integrated Products, IBM Microelectronics and Analog Devices. Dr. Tewksbury was a member of the board of directors of the Global Semiconductor Alliance (GSA) from March 2011 to August 2013. Dr. Tewksbury holds a B.S. in Architecture and an M.S. and a Ph.D. in Electrical Engineering from the Massachusetts institute of Technology. We believe that Dr. Tewksbury is qualified to serve as a member of our Board of Directors and our Audit Committee due to his industry knowledge and expensive experience as an executive and director for public technology companies.
Anthony Ngai
Director
Anthony K. K. Ngai has served as a member of our board of directors since October 2018 and as a member of our nominating and corporate governance, compensation and audit committees since May 2021. Mr. Ngai has also served as chair of our nominating and corporate governance committee since September 2022 and as chair of our audit committee from November 2021 to April 2022. Since June 2022, Mr. Ngai has served as the Chief Financial Officer of Unience.io, a technology company based in Hong Kong that develops blockchain and Web3 applications and community. From September 2020 to June 2022, Mr. Ngai served as a Partner of Gravity Capital Partners Co. and the Responsible Officer of Avanta Investment Management, an asset management company. Prior to that, Mr. Ngai served as the Head of Credit Trading at J.P. Morgan Asia Pacific, a global financial services firm, from June 2004 to September 2018. In November 2018, Mr. Ngai co-founded JUST FEEL, a nonprofit charity focused on mental health in education. Since July 2020, Mr. Ngai served on the Board of Trustees of the Chinese University of Hong Kong, Chung Chi College. Mr. Ngai received a B.S. in quantitative finance from The Chinese University of Hong Kong and is a graduate of the Program for Management Development from Harvard Business School.
Kathy Pesic
Chair of the Board of Directors
Katherine S. Ngai-Pesic co-founded Silvaco in 1984 and is our controlling stockholder. Ms. Ngai-Pesic has served as a member of our board of directors since November 2012 and as chair of our board of directors since December 2021. Ms. Ngai-Pesic has also served as a member of our compensation committee since May 2021 and as chair of our compensation committee from December 2021 to September 2022, as chair of our nominating and corporate governance committee from May 2021 to December 2021 and as a member of our nominating and corporate governance committee since December 2021 and as a member of our audit committee from May 2021 to September 2022. In addition, Ms. Ngai-Pesic founded Kipee in March 2001 and has served as its President since inception and founded the Lee Ho Yee Foundation in April 2021 and has served as chair of its board of directors since inception. Mrs. Ngai-Pesic has served as president of the Marriott Business Center HOA Association since October 2012. Ms. Ngai-Pesic also has an endowed associate professorship at Purdue University’s Department of Electrical & Computer Engineering. Ms. Ngai-Pesic received a B.S. in chemistry and an M.S. in electrical engineering from Santa Clara University.
Anita Ganti
Director
Anita Ganti has served as a member of our board of directors since March 2024 and as the chair of our compensation committee since April 2024. From 2015 to October 2019, Ms. Ganti served as senior vice president of the product engineering services organization of Wipro Limited, a leading global information technology, consulting and business process services company. From 2013 to 2015, she was vice president of global technology at Flex Ltd. (formerly Flextronics), a global electronics manufacturing services company. Since 2020, Ms. Ganti has served as member of the board of director and the audit committee of Power Integrations Inc. (Nasdaq: POWI), which is a fabless semiconductor company. In addition, between June 2023 and April 2024, she served as a director and the chairperson of the compensation committee and member of the audit committee of Exro Technologies (TSX: EXRO), a power-control electronics company. Ms. Ganti has a B.S. in electrical engineering from Veermata Jijabai Technological Institute in India, an M.S.E.E. from Virginia Polytechnic Institute and State University, and an M.B.A. from the Wharton School, University of Pennsylvania.