Bertrand Loy to Retire After 13 Years as President and CEO in August 2025; Will Continue to Serve as Executive Chair of the Entegris Board of Directors David Reeder Will Succeed Loy as President and CEO BILLERICA, Mass.–(BUSINESS WIRE)–Entegris, Inc. (NASDAQ: ENTG), a leading supplier of advanced materials and process solutions for the semiconductor and other high-technology industries, today announced that Bertrand Loy will retire as President and Chief Executive Officer after 13 years in those roles, effective August 18, 2025. David Reeder will succeed Mr. Loy as President and CEO at that time. Mr. Reeder currently serves on the Entegris Board of Directors and will continue to do so as CEO. Mr. Loy will serve as Executive Chair of the Board through the end of the second quarter of 2026 to facilitate a smooth transition. Mr.