[Form 4] AEHR TEST SYSTEMS Insider Trading Activity

Aehr Test Systems Chief Operating Officer Adil Engineer reported several stock transactions.

Rhea-AI Filing Summary

Aehr Test Systems Chief Operating Officer Adil Engineer reported several stock transactions. On April 9, he completed open-market sales totaling 3,728 shares of common stock at prices around $66.27–$66.32 per share, leaving him with 41,441 shares after those sales.

On April 11, 386 shares were withheld at $70.43 per share to cover tax obligations when restricted stock units vested. A footnote clarifies this withholding does not represent a sale by the executive. After all reported transactions, Engineer directly holds 41,055 shares, which includes shares subject to unvested restricted stock units.

Insider Trade Summary

Net Seller: 3,728 shares

Net Sell 3 txns

Insider ENGINEER ADIL

Role Chief Operating Officer

Sold 3,728 shs ($247K)

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	386	$70.43	$27K
Sale	Common Stock	2,528	$66.315	$168K
Sale	Common Stock	1,200	$66.27	$80K

Holdings After Transaction: Common Stock — 41,055 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

Open-market sale 1: 2,528 shares at $66.315 Open-market sale 2: 1,200 shares at $66.270 Total shares sold: 3,728 shares +3 more

6 metrics

Open-market sale 1 2,528 shares at $66.315 Common Stock sale on April 9, 2026

Open-market sale 2 1,200 shares at $66.270 Additional Common Stock sale on April 9, 2026

Total shares sold 3,728 shares Aggregate open-market sales on April 9, 2026

Tax withholding shares 386 shares at $70.430 Shares withheld for RSU tax obligations on April 11, 2026

Post-sale holdings 41,441 shares Direct holdings after April 9 sales

Final reported holdings 41,055 shares Direct holdings after April 11 tax withholding

Key Terms

restricted stock units, tax withholding obligations, open-market sale, Reporting Person

4 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"

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Reporting Person financial

"This does not represent a sale by the Reporting Person"

FAQ

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

What insider transactions did AEHR COO Adil Engineer report?

Adil Engineer reported selling 3,728 shares of Aehr Test Systems common stock in open-market transactions on April 9, plus a separate 386-share withholding on April 11 to cover taxes on vested restricted stock units.

At what prices did the AEHR COO sell his shares?

The open-market sales were executed at prices around $66.27 and $66.32 per share. These trades involved 3,728 shares of Aehr Test Systems common stock, reflecting routine portfolio activity rather than any disclosed change in role or compensation.

Was the 386-share Form 4 transaction for AEHR a sale?

No, the 386-share transaction was not a sale. A footnote explains these shares were withheld to satisfy tax withholding obligations when restricted stock units vested, meaning the shares covered taxes owed instead of being sold in the market.

How many AEHR shares does the COO hold after these transactions?

After the reported transactions, Adil Engineer directly holds 41,055 shares of Aehr Test Systems common stock. A footnote notes this amount includes shares subject to unvested restricted stock units, which will vest over time under existing equity awards.

What does the AEHR Form 4 say about restricted stock units?

The filing notes that the reported holdings include shares subject to unvested restricted stock units. It also clarifies that the 386 shares withheld on April 11 covered tax obligations triggered by RSU vesting, rather than representing a discretionary stock sale.

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

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Accepted by SEC EDGAR 04/14/2026 - 02:36 PM EDT 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^*

ENGINEER ADIL

(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)
	Chief Operating Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/09/2026

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	04/09/2026		S		2,528	D	$66.315	42,641	D
Common Stock	04/09/2026		S		1,200	D	$66.27	41,441	D
Common Stock	04/11/2026		F		386(1)	D	$70.43	41,055(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	04/14/2026
	** 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)