AEHR CFO has 496 shares withheld for taxes

AEHR TEST SYSTEMS (AEHR) reported an insider equity transaction by CFO Chris Siu.

Rhea-AI Filing Summary

AEHR TEST SYSTEMS (AEHR) reported an insider equity transaction by CFO Chris Siu. On 2026-09-01, 496 shares of common stock were withheld at $76.59 per share to satisfy tax withholding obligations upon vesting of restricted stock units and restricted shares; this was not an open-market sale. Following this tax-withholding disposition, Siu directly held 77,328 shares, including shares subject to unvested restricted stock units, and indirectly held 5,706 shares by trust.

Insider Trade Summary

Tax Withholding: 496 shares

Tax Withholding 2 txns

Insider Siu Chris

Role CFO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock F1, F2	496	$76.59	$38K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 77,328 shares (Direct); Common Stock — 5,706 shares (Indirect, By Trust)

Footnotes (2)

1. F1. Represents shares that were withheld to satisfy tax withholding obligations upon vesting of restricted stock units and restricted shares. 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 tax: 496 shares Withholding price per share: $76.59 per share Direct holdings after transaction: 77,328 shares +2 more

5 metrics

Shares withheld for tax 496 shares Shares of AEHR common stock withheld on 2026-09-01 to satisfy tax withholding obligations

Withholding price per share $76.59 per share Value used for the 496 shares withheld for tax on 2026-09-01

Direct holdings after transaction 77,328 shares Direct AEHR common stock held by CFO Chris Siu following the tax-withholding disposition, including unvested RSUs

Indirect holdings after transaction 5,706 shares AEHR common stock held indirectly "By Trust" after the reported transaction

Exercise price or tax liability shares 496 shares Shares delivered or withheld for payment of tax liability in code F transaction

Key Terms

restricted stock units, tax withholding obligations, indirect, withheld

4 terms

restricted stock units financial

"upon vesting of restricted stock units and restricted shares"

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

"were withheld to satisfy tax withholding obligations upon vesting"

indirect financial

"Indirect ownership type reported as "By Trust""

withheld financial

"Represents shares that were withheld to satisfy tax withholding obligations"

FAQ

What insider transaction did AEHR CFO Chris Siu report in this Form 4 for AEHR?

CFO Chris Siu reported that 496 shares of AEHR common stock were withheld on 2026-09-01 at $76.59 per share to satisfy tax withholding obligations upon vesting of restricted stock units and restricted shares. The filing states this was not a sale.

Was the AEHR insider transaction by CFO Chris Siu an open-market sale of AEHR stock?

No. The Form 4 states the 496 shares were withheld to satisfy tax withholding obligations upon vesting of restricted stock units and restricted shares and that this does not represent a sale by the reporting person.

How many AEHR shares does CFO Chris Siu own directly after this Form 4 transaction?

After the tax-withholding disposition, CFO Chris Siu directly held 77,328 shares of AEHR common stock. A footnote explains that this amount includes shares subject to unvested restricted stock units.

What indirect AEHR holdings does CFO Chris Siu report after this transaction?

In addition to his direct holdings, Chris Siu reported 5,706 AEHR shares held indirectly "By Trust" after the transaction. These are reported as indirect ownership on the Form 4.

At what price were the AEHR shares withheld for taxes in CFO Chris Siu’s Form 4?

The 496 AEHR shares withheld to satisfy tax obligations were valued at $76.59 per share, according to the Form 4 entry for the 2026-09-01 transaction.

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Available on EDGAR 09/01/2026 - 06:03 PM Accepted by SEC EDGAR 09/01/2026 - 06:02 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^*

Siu Chris

(Last) (First) (Middle)

C/O AEHR TEST SYSTEMS

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)
	CFO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026

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	09/01/2026		F		496(1)	D	$76.59	77,328(2)	D
Common Stock								5,706	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 and restricted shares. 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	09/01/2026
	** 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)