[Form 4] Aehr Test Systems Insider Trading Activity

Rhea-AI Filing Summary

Insider reported RSU withholding to cover taxes and a small disposition of common stock. The filing shows Executive VP of R&D Didier Wimmers had 308 shares withheld at $24.52 per share on 09/03/2025 to satisfy tax withholding upon vesting of restricted stock units; the filing clarifies this withholding "does not represent a sale" by the reporting person. Following the transaction, the reporting person is shown as beneficially owning 13,293 shares, which the filer notes includes shares subject to unvested restricted stock units.

Positive

• Continued equity alignment: reporting person retains a significant position (13,293 shares) including unvested RSUs
• Routine compensation action: disposal was tax withholding on vested RSUs, not an open-market sale

Negative

• Minor dilution of holdings: 308 shares were withheld to satisfy taxes at $24.52 per share

Insights

Corporate Governance Expert

TL;DR: Minor tax-withholding disposition for vested RSUs; ownership retained via unvested RSUs.

The Form 4 documents a routine withholding of 308 shares to satisfy tax obligations on RSU vesting and clarifies this was not an open-market sale. Such transactions are standard compensation-related mechanics and generally carry neutral governance implications. Beneficial ownership remains meaningful at 13,293 shares, though that figure includes unvested RSUs, so actual voting or transferability may be limited until vesting.

Securities Analyst

TL;DR: Small disposition; no change to executive's compensation alignment with shareholders.

The 308-share disposition at $24.52 appears solely to satisfy tax withholding on vested restricted stock units. Because the filing explicitly states it "does not represent a sale," there is no evidence of deliberate cashing out that would signal liquidity needs or a shift in alignment. The reported 13,293-share beneficial position, including unvested RSUs, indicates continued equity-based compensation exposure to AEHR performance.

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

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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 CA 94539

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
09/03/2025

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

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

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

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	09/03/2025		F		308(1)	D	$24.52	13,293(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	09/03/2025
	** 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.

FAQ

What did AEHR insider Didier Wimmers report on Form 4?

The Form 4 reports that 308 shares were withheld to satisfy tax withholding upon RSU vesting and shows beneficial ownership of 13,293 shares (including unvested RSUs).

Was the 308-share transaction a sale by the insider (AEHR)?

No. The filing states the 308-share withholding "does not represent a sale by the Reporting Person."

What price was associated with the withheld shares?

The shares withheld were recorded at a price of $24.52 per share on 09/03/2025.

Does the 13,293-share total include unvested awards?

Yes. The filing explicitly states the reported amount includes shares subject to unvested restricted stock units.

What is the reporting person's role at AEHR?

The reporting person is listed as Executive VP of R&D and an officer of the issuer.