AEHR EVP has shares withheld for RSU taxes

AEHR Test Systems Executive VP of R&D Didier Wimmers reported a routine tax-withholding transaction related to equity compensation.

Rhea-AI Filing Summary

AEHR Test Systems Executive VP of R&D Didier Wimmers reported a routine tax-withholding transaction related to equity compensation. On the vesting of restricted stock units, 332 shares of common stock were withheld at a reference price of $114.59 per share to cover tax obligations, rather than being sold on the open market.

After this withholding, Wimmers is reported as beneficially owning 10,327 shares of AEHR common stock, and this total includes shares that remain subject to unvested restricted stock units. The filing emphasizes that the transaction does not represent a discretionary sale by the executive.

Insider Trade Summary

Exercise Price or Tax Liability: 332 shares

Exercise Price or Tax Liability 1 txn

Insider WIMMERS DIDIER

Role Executive VP of R&D

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	332	$114.59	$38K

Holdings After Transaction: Common Stock — 10,327 shares (Direct)

Footnotes (2)

1. F1. Represents shares that were withheld to satisfy tax withholding obligations upon vesting of restricted stock units. This does not represent a sale by the Reporting Person.
2. F2. The amount reported includes shares subject to unvested restricted stock units.

Key Figures

Shares withheld for taxes: 332 shares Reference price per share: $114.59 per share Shares beneficially owned after transaction: 10,327 shares +2 more

5 metrics

Shares withheld for taxes 332 shares Tax withholding on RSU vesting, transaction code F

Reference price per share $114.59 per share Value used for 332 withheld shares

Shares beneficially owned after transaction 10,327 shares Post-transaction AEHR common stock holdings, includes unvested RSUs

Tax-withholding transactions 1 transaction Non-derivative, code F, for RSU tax obligations

Tax-withholding shares total 332 shares Aggregate tax-withholding shares in this Form 4

Key Terms

restricted stock units, tax withholding obligations, beneficially owning, Form 4, +1 more

5 terms

restricted stock units financial

"Represents shares that were withheld to satisfy tax withholding obligations upon vesting of restricted stock units."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"Represents shares that were withheld to satisfy tax withholding obligations upon vesting of restricted stock units."

beneficially owning financial

"The amount reported includes shares subject to unvested restricted stock units."

Beneficially owning a security means you have the economic rights and practical power over shares even if they’re held in another name—you can receive dividends, sell the shares, or direct how they’re voted. Think of it like renting a car: you may not hold the title, but you control and use it. For investors, beneficial ownership reveals who actually controls or benefits from a company’s stock and is used in regulatory disclosure and voting calculations.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Executive VP of R&D other

"Executive VP of R&D"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What AEHR (AEHR) insider activity did Didier Wimmers report on this Form 4?

The Form 4 shows Executive VP of R&D Didier Wimmers had shares withheld to pay taxes on vesting restricted stock units. This was a non-market, tax-withholding disposition, not an open-market buy or sell of AEHR common stock.

How many AEHR shares were withheld for taxes in Didier Wimmers’ Form 4?

The filing reports that 332 shares of AEHR common stock were withheld to satisfy tax withholding obligations. These shares relate to the vesting of restricted stock units and are not part of an open-market sale or purchase by the executive.

Does Didier Wimmers’ AEHR Form 4 represent a sale of shares by the executive?

No, the Form 4 explicitly states the transaction does not represent a sale by the reporting person. The 332 AEHR shares were withheld solely to cover tax obligations upon restricted stock unit vesting, a routine administrative step in equity compensation.

How many AEHR shares does Didier Wimmers hold after this Form 4 transaction?

Following the tax-withholding transaction, Wimmers is reported as beneficially owning 10,327 shares of AEHR common stock. This figure includes shares subject to unvested restricted stock units, reflecting both vested and unvested equity-based holdings after the event.

What does transaction code F mean in the AEHR Form 4 for Didier Wimmers?

Transaction code F indicates payment of exercise price or tax liability by delivering securities. In this AEHR filing, it reflects 332 shares withheld to satisfy tax withholding obligations upon restricted stock unit vesting, rather than a discretionary market sale by the executive.

How are restricted stock units reflected in Didier Wimmers’ AEHR share ownership?

The Form 4 notes that the reported total of 10,327 AEHR shares includes shares subject to unvested restricted stock units. This means his beneficial ownership figure combines currently vested shares and RSUs that are scheduled to vest under the company’s equity plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/04/2026 - 01:34 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

WIMMERS DIDIER

(Last) (First) (Middle)

400 KATO TERRACE

(Street)

FREMONT CALIFORNIA 94539

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AEHR TEST SYSTEMS [ AEHR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive VP of R&D

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/03/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	06/03/2026		F		332(1)	D	$114.59	10,327(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares that were withheld to satisfy tax withholding obligations upon vesting of restricted stock units. This does not represent a sale by the Reporting Person.

2. The amount reported includes shares subject to unvested restricted stock units.

Remarks:

	/s/Chris Siu, Attorney-in-Fact	06/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)