Wendy Arienzo, Ph.D., age 69, has served as a director of Power Integrations since April 2017. Dr. Arienzo has more than three decades of technical and managerial experience in technology industries, including the semiconductor and power-electronics industries. From September 2013 to December 2021, she served as vice president of operations at Fujifilm Dimatix, Inc., a subsidiary of Fujifilm Corporation and a leading supplier of piezoelectric industrial print heads. Previously, she was chief executive officer and a director of ArrayPower, a developer of software-defined inverter technology for solar-energy systems. Her prior experience includes a series of executive and technical roles at NXP Semiconductors (and its predecessor, Philips Semiconductor), IBM Corp. and AT&T Bell Laboratories, among others. Dr. Arienzo is also a director of Ichor Holdings, Ltd., a company that designs, engineers, and manufactures fluid delivery subsystems and components for semiconductor capital equipment. Dr. Arienzo has a B.S. and an M.S. in Materials Science Engineering from Brown University, and a Ph.D. in Materials Science Engineering from Stanford University. We believe Dr. Arienzo is qualified to serve as a director due to her extensive leadership experience in the semiconductor and power-electronics industries.