Chris P. Siu joined Aehr Test Systems as Executive Vice President of Finance and Chief Financial Officer in June 2023. Before joining the Company he served as Senior Vice President Finance, Corporate Treasurer and Chief Accounting Officer at Ultra Clean Holdings, Inc. from May 2019 to May 2023, and previously held senior management roles at GlobalFoundries Inc. and Trident Microsystems, Inc. He began his career in public accounting with Ernst & Young LLP and Deloitte & Touche LLP and is a Certified Public Accountant (inactive) in California. He received a B.S. in Accounting from Brigham Young University in Hawaii and an M.B.A. from the University of California, Berkeley.