[Form 4] AEHR TEST SYSTEMS Insider Trading Activity

Rhea-AI Filing Summary

AEHR Test Systems (AEHR) chief financial officer Chris Siu reported a withholding-related disposition of 126 shares of common stock on 10/02/2025 at a price of $32.25 per share; the filing states these shares were withheld to satisfy tax withholding obligations upon vesting of restricted stock units and do not represent a sale by the reporting person. After the withholding, the report shows 75,409 shares beneficially owned directly and 5,211 shares beneficially owned indirectly by a trust, with the reported direct total including shares subject to unvested restricted stock units.

Insights

Corporate Insider / Disclosure Analyst

TL;DR: Withholding of 126 shares for taxes reduced direct holdings; disclosure is routine.

The filing documents a tax-withholding disposition of 126 shares on 10/02/2025 at $32.25 per share connected to the vesting of restricted stock units. The report explicitly states this is not a sale by the reporting person, which is a common administrative step when equity awards vest.

Reported beneficial ownership after the transaction is 75,409 shares direct and 5,211 shares indirect via a trust; the direct count includes unvested restricted stock units. Monitor future Form 4s if additional vesting, withholdings, or open-market transactions are disclosed in coming quarters.

Executive Compensation Analyst

TL;DR: The movement reflects routine RSU tax withholding, not an active cash sale.

The explanation clarifies the withheld 126 shares satisfied tax obligations on vested restricted stock units, which reduces the net number of shares delivered to the officer at vesting while leaving the grant economics intact. The filing also notes the reported direct holdings continue to include shares subject to unvested RSUs, indicating ongoing compensation-related equity exposure.

Key near-term items to track are the vesting schedule for outstanding RSUs and any future disclosures of sales or option exercises that would change the direct or indirect holdings materially.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Siu Chris

Role CFO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	126	$32.25	$4K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 75,409 shares (Direct); Common Stock — 5,211 shares (Indirect, By Trust)

Footnotes (1)

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

Form 4 Insider Transactions: What Each Field Means →

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^*

Siu Chris

(Last) (First) (Middle)

C/O AEHR TEST SYSTEMS

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)
	CFO

3. Date of Earliest Transaction (Month/Day/Year)
10/02/2025

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	10/02/2025		F		126(1)	D	$32.25	75,409(2)	D
Common Stock								5,211	I	By Trust

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/SIU CHRIS	10/08/2025
	** 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).
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