Christopher Siu

Director of Finance/CFO at AEHR TEST SYSTEMS, INC.

Net worth: 7 M $ as of 2026-07-30

55 year

75 connections

Electronic Technology

Consumer Services

Health Technology

Profile

Christopher P.
Siu is Chief Financial Officer, Secretary & EVP-Finance at Aehr Test Systems since 2023.
Formerly, Mr. Siu was Chief Accounting Officer & Senior Vice President at Ultra Clean Holdings, Inc. from 2019 to 2022, Controller at GLOBALFOUNDRIES, Inc. from 2010 to 2018, Accounting Manager at Varian Medical Systems, Inc. from 2004 to 2007, Chief Accounting Officer & Accounting Director at Trident Microsystems, Inc., Vice President-Finance at PDF Solutions, Inc., and Audit Manager at Deloitte LLP (New York).
Education includes undergraduate studies at Brigham Young University and Brigham Young University (Hawaii), and an MBA from the University of California, Berkeley.

Known holdings in public companies

Company	Date	Number of shares	Valuation	Valuation date
AEHR TEST SYSTEMS 0.26%	2026-07-12	83,530 ( 0.26% )	7 M $	2026-07-30

Christopher Siu active positions

Companies	Position	Start
AEHR TEST SYSTEMS, INC.	Director of Finance/CFO	2023-05-31

All active positions of Christopher Siu

Former positions of Christopher Siu

Companies	Position	End
ULTRA CLEAN HOLDINGS, INC.	Comptroller/Controller/Auditor	2022-05-15
GLOBALFOUNDRIES INC.	Comptroller/Controller/Auditor	2018-09-30
VARIAN MEDICAL SYSTEMS, INC.	Comptroller/Controller/Auditor	2007-01-31
Deloitte LLP (New York) Deloitte LLP (New York) Miscellaneous Commercial ServicesCommercial Services Provides audit, consulting, tax and financial advisory services	Comptroller/Controller/Auditor	-
PDF SOLUTIONS, INC.	Corporate Officer/Principal	-

See the detail of Christopher Siu's experience

Training of Christopher Siu

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Christopher Siu's experience

Connections

1st degree connections

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Private companies	10
Trident Microsystems, Inc. Trident Microsystems, Inc. Computer PeripheralsElectronic Technology Provides multimedia semiconductor solutions for the digital home entertainment market	Electronic Technology
Aehr Test Systems Aehr Test Systems Electronic Production EquipmentElectronic Technology Develops, manufactures and markets burn-in and test equipment for semiconductor manufacturing	Electronic Technology
Varian Medical Systems, Inc. Varian Medical Systems, Inc. Medical SpecialtiesHealth Technology Designs, manufactures and supplies radiotherapy medical devices for treating cancer & develops related software solutions	Health Technology
PDF Solutions, Inc. PDF Solutions, Inc. Information Technology ServicesTechnology Services Provides yield improvement technologies and services	Technology Services
Ultra Clean Holdings, Inc. Ultra Clean Holdings, Inc. Industrial MachineryProducer Manufacturing Designs, engineers and manufactures gas & liquid delivery systems for semiconductor process equipment manufacturers and device makers	Producer Manufacturing
Deloitte LLP (New York) Deloitte LLP (New York) Miscellaneous Commercial ServicesCommercial Services Provides audit, consulting, tax and financial advisory services	Commercial Services
Brigham Young University Brigham Young University Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
University of California, Berkeley University of California, Berkeley Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services
GLOBALFOUNDRIES, Inc. GLOBALFOUNDRIES, Inc. SemiconductorsElectronic Technology Provides foundry services and manufactures semiconductors	Electronic Technology
Brigham Young University (Hawaii) Brigham Young University (Hawaii) Other Consumer ServicesConsumer Services Functions as a College/University	Consumer Services