Didier Wimmers Biography and Net Worth

VP of Aehr Test Systems

Joined the company as Executive Vice President of R&D in March 2025.

Prior to joining Aehr, Mr. Wimmers held executive engineering management positions at Schlumberger ATE (Automated Test Equipment), NPTest (acquired by Credence systems), Credence Systems Corporation (acquired by XCerra), FormFactor, Altera (acquired by Intel Corp), Thinfilm Electronics and Advantest. America. He has had extensive experience in leading worldwide product development teams in the Semiconductor and Semiconductor Test Equipment industries. He has built world-class engineering teams that focus on customer needs, innovation, product quality and on-time delivery.

Mr. Wimmers received a Master’s degree in Electrical Engineering from INSA Lyon, France.

What is Didier Wimmers' net worth?: The estimated net worth of Didier Wimmers is at least $1.03 million as of April 13th, 2026. Wimmers owns 12,559 shares of Aehr Test Systems stock worth more than $1,030,152 as of April 16th. This net worth evaluation does not reflect any other assets that Wimmers may own. Learn More about Didier Wimmers' net worth.
How do I contact Didier Wimmers?: The corporate mailing address for Wimmers and other Aehr Test Systems executives is 400 KATO TERRACE, FREMONT CA, 94539. Aehr Test Systems can also be reached via phone at (510) 623-9400 and via email at [email protected]. Learn More on Didier Wimmers' contact information.
Has Didier Wimmers been buying or selling shares of Aehr Test Systems?: During the last ninety days, Didier Wimmers has sold $385,723.00 in Aehr Test Systems stock. Most recently, Didier Wimmers sold 1,900 shares of the business's stock in a transaction on Wednesday, April 15th. The shares were sold at an average price of $72.02, for a transaction totalling $136,838.00. Following the completion of the sale, the vice president now directly owns 10,659 shares of the company's stock, valued at $767,661.18. Learn More on Didier Wimmers' trading history.
Who are Aehr Test Systems' active insiders?: Aehr Test Systems' insider roster includes Michael Brannan (VP), Fariba Danesh (Director), Adil Engineer (COO), Gayn Erickson (CEO), David Hendrickson (Insider), Laura Oliphant (Director), Rhea Posedel (Director), Donald Richmond, II (VP), Vernon Rogers (VP), Mario Rosati (Director), Alberto Salamone (EVP), Geoffrey Scott (Director), Chris Siu (CFO), Howard Slayen (Director), Kenneth Spink (CFO), Alistair Sporck (VP), and Didier Wimmers (VP). Learn More on Aehr Test Systems' active insiders.
Are insiders buying or selling shares of Aehr Test Systems?: During the last year, insiders at the semiconductor company sold shares 21 times. They sold a total of 317,838 shares worth more than $19,316,030.24. The most recent insider tranaction occured on April, 15th when VP Didier Wimmers sold 1,900 shares worth more than $136,838.00. Insiders at Aehr Test Systems own 6.8% of the company. Learn More about insider trades at Aehr Test Systems.
Information on this page was last updated on 4/15/2026.

Didier Wimmers Insider Trading History at Aehr Test Systems

Transaction Date	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction	Details
4/15/2026	Sell	1,900	$72.02	$136,838.00	10,659
4/13/2026	Sell	3,500	$71.11	$248,885.00	12,559

Didier Wimmers Buying and Selling Activity at Aehr Test Systems

Aehr Test Systems Company Overview

Aehr Test Systems provides test solutions for testing, burning-in, and semiconductor devices in wafer level, singulated die, and package part form, and installed systems worldwide. Its product portfolio includes FOX-XP and FOX-NP systems that are full wafer contact and singulated die/module test and burn-in systems that can test, burn-in, and stabilize range of devices, including silicon carbide-based and other power semiconductors, 2D and 3D sensors used in mobile phones, tablets and other computing devices, memory semiconductors, processors, microcontrollers, systems-on-a-chip, and photonics and integrated optical devices. The company also offers FOX-CP system, a low-cost single-wafer compact test solution for logic, memory, and photonic devices; FOX WaferPak Contactor, a full wafer contactor capable of testing wafers up to 300mm that enables integrated circuit manufacturers to perform test, burn-in, and stabilization of full wafers on the FOX-P systems. In addition, it provides FOX DiePak Carrier, a reusable temporary package that enables IC manufacturers to perform final test and burn-in of bare die and modules; and FOX DiePak Loader. The company was incorporated in 1977 and is headquartered in Fremont, California.

Today's Range

Now: $80.85

$80.61

$91.43

50 Day Range

MA: $40.50

$23.00

$74.38

2 Week Range

Now: $80.85

$7.71

$91.43

Volume

8,418,336 shs

Average Volume

2,164,088 shs

Market Capitalization

$2.54 billion

P/E Ratio

N/A

Dividend Yield

N/A

Beta

2.28