Does the 350-share disposition in AEHR’s Form 4 represent a sale by the CFO?

No, the Form 4 explicitly states the 350 shares were withheld to satisfy tax obligations upon RSU vesting and does not represent a sale. These shares were retained by the issuer rather than sold by CFO Chris Siu on the open market.

AEHR (AEHR) CFO reports 350 shares withheld to cover RSU taxes

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

AEHR Test Systems CFO Chris Siu reported a routine tax-related share withholding on recently vested restricted stock units. The company withheld 350 shares of common stock at $93.62 per share to satisfy tax obligations, which the filing states does not represent a sale by the reporting person.

After this withholding, Siu beneficially owns 69,920 shares of common stock directly, and 5,706 shares indirectly through a trust. The direct total includes shares subject to unvested restricted stock units, showing he retains a sizable equity position following this non-market transaction.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider Siu Chris

Role CFO

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	350	$93.62	$33K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 69,920 shares (Direct, null); Common Stock — 5,706 shares (Indirect, By Trust)

Footnotes (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.

Key Figures

Shares withheld for taxes: 350 shares Withholding price: $93.62 per share Direct holdings after transaction: 69,920 shares +2 more

5 metrics

Shares withheld for taxes 350 shares Withheld to satisfy tax obligations on RSU vesting

Withholding price $93.62 per share Value used for 350-share tax withholding

Direct holdings after transaction 69,920 shares Common stock directly held by CFO after withholding

Indirect holdings after transaction 5,706 shares Common stock held indirectly through a trust

Tax-withholding transactions 1 transaction, 350 shares Summary of F-code tax-withholding activity in this Form 4

Key Terms

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

5 terms

restricted stock units financial

"upon vesting of restricted stock units. This does not represent a sale"

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

"shares that were withheld to satisfy tax withholding obligations upon vesting"

indirect financial

"total_shares_following_transaction: "5706.0000" ... ownership_type: "indirect""

Form 4 regulatory

"This was an automatic tax-withholding event, and was disclosed in a Form 4 insider filing."

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.

transaction code F regulatory

"The Form 4 lists transaction code F, which indicates payment of an exercise price or tax liability"

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Form 4 Insider Transactions: What Each Field Means →

06/01/2026 - 07:31 PM

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)
06/01/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/01/2026		F		350⁽¹⁾	D	$93.62	69,920⁽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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

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	06/01/2026
	** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did AEHR (AEHR) report for CFO Chris Siu?

AEHR Test Systems reported that CFO Chris Siu had 350 shares withheld to cover taxes on vested restricted stock units. This was an automatic tax-withholding event, not an open-market trade, and was disclosed in a Form 4 insider filing.

How many AEHR shares were withheld for CFO Chris Siu’s taxes and at what price?

The filing shows 350 AEHR common shares withheld at $93.62 per share to satisfy tax withholding obligations on vested restricted stock units, as noted in the footnotes. This is classified as a tax-withholding disposition rather than a typical market sale.

How many AEHR shares does CFO Chris Siu hold after this Form 4 event?

After the tax withholding, CFO Chris Siu directly holds 69,920 AEHR common shares, including shares subject to unvested restricted stock units. He also indirectly holds 5,706 shares through a trust, reflecting his total reported equity exposure in the company.

What type of transaction code appears in AEHR CFO Chris Siu’s Form 4?

The Form 4 lists transaction code F, which indicates payment of an exercise price or tax liability by delivering securities. Here it reflects shares withheld for taxes on vested restricted stock units, not a discretionary buy or sell decision.