AEHR Test Systems VP Sporck buys 1,221 shares

Q: How many AEHR shares did Alistair N. Sporck purchase?

Alistair N. Sporck reported a purchase of 1,221 shares at $6.6725 per share on October 1, 2026, through the company’s Amended and Restated 2006 Employee Stock Purchase Plan. The transaction was reported as held indirectly by a trust, with a reported post-transaction position of 6,398 shares.

Q: Was Alistair N. Sporck’s AEHR employee-plan purchase subject to Section 16 short-swing liability?

The purchase was described as exempt from Section 16 regarding liabilities arising from six-month short-swing transactions in the company’s securities. The shares were purchased through the company’s Amended and Restated 2006 Employee Stock Purchase Plan, described as a tax-conditioned plan under Internal Revenue Code Section 423. No Rule 10b5-1 plan is reported.

The entries distinguish tax withholding tied to restricted-stock-unit vesting from an employee-plan purchase held indirectly by a trust.

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Form Type

Rhea-AI Filing Summary

AEHR Test Systems VP Contactor Business Unit Alistair N. Sporck reported 54 shares withheld to satisfy tax obligations upon vesting of restricted stock units on October 1, 2026; the footnote says this was not a sale. His reported direct position afterward was 22,493 shares, including shares subject to unvested restricted stock units.

Separately, 1,221 shares were purchased through the company’s Amended and Restated 2006 Employee Stock Purchase Plan at $6.6725 per share and reported as held indirectly by a trust. The reported indirect position afterward was 6,398 shares. No Rule 10b5-1 plan is reported.

Insider Trade Summary

2 transactions reported

Mixed 2 txns

Insider SPORCK ALISTAIR N

Role VP Contactor Business Unit

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock ^{F1, F2}	54	$101.60	$5K
Other	Common Stock ^F3	1,221	$6.6725	$8K

Holdings After Transaction: Common Stock — 22,493 shares (Direct); Common Stock — 6,398 shares (Indirect, By Trust)

Footnotes (3)

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.
F2. The amount reported includes shares subject to unvested restricted stock units.
F3. These shares have been purchased through the company's Amended and Restated 2006 Employee Stock Purchase Plan, a "tax-conditioned plan" Per Internal Revenue Code Section 423. This purchase is exempt from Section 16 of the Securities Exchange Act of 1934 regarding liabilities arising from six-month short-swing transactions in the Company's securities.

Key Figures

Shares withheld for tax obligations: 54 shares Reported price for withheld shares: $101.60 per share Direct shares following transaction: 22,493 shares +3 more

6 metrics

Shares withheld for tax obligations 54 shares Upon vesting of restricted stock units on October 1, 2026.

Reported price for withheld shares $101.60 per share Shares withheld upon vesting of restricted stock units on October 1, 2026.

Direct shares following transaction 22,493 shares Reported after the October 1, 2026 transaction; includes shares subject to unvested restricted stock units.

Employee-plan shares purchased 1,221 shares Purchased on October 1, 2026 and reported as held indirectly by a trust.

Employee-plan purchase price $6.6725 per share Purchase through the Amended and Restated 2006 Employee Stock Purchase Plan on October 1, 2026.

Indirect shares following transaction 6,398 shares Reported after the October 1, 2026 purchase; held by a trust.

Key Terms

restricted stock units, Amended and Restated 2006 Employee Stock Purchase Plan, tax-conditioned plan, Section 16, +1 more

5 terms

restricted stock units financial

"withheld to satisfy tax withholding obligations upon vesting of restricted stock units"

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.

Amended and Restated 2006 Employee Stock Purchase Plan financial

"purchased through the company's Amended and Restated 2006 Employee Stock Purchase Plan"

tax-conditioned plan financial

"a tax-conditioned plan Per Internal Revenue Code Section 423"

Section 16 regulatory

"exempt from Section 16 of the Securities Exchange Act of 1934"

Section 16 is a U.S. securities law rule that governs the trading and disclosure obligations of company insiders — typically officers, directors and large shareholders — to promote transparency and deter unfair profit-taking. It requires insiders to publicly report their stock trades and allows companies or the issuer to reclaim quick, short-term profits from certain insider trades, like a scoreboard and a refund policy that help investors see and limit possible insider advantage.

six-month short-swing transactions regulatory

"liabilities arising from six-month short-swing transactions"

FAQ

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

How many AEHR shares did Alistair N. Sporck purchase?

Alistair N. Sporck reported a purchase of 1,221 shares at $6.6725 per share on October 1, 2026, through the company’s Amended and Restated 2006 Employee Stock Purchase Plan. The transaction was reported as held indirectly by a trust, with a reported post-transaction position of 6,398 shares.

Was Alistair N. Sporck’s AEHR employee-plan purchase subject to Section 16 short-swing liability?

The purchase was described as exempt from Section 16 regarding liabilities arising from six-month short-swing transactions in the company’s securities. The shares were purchased through the company’s Amended and Restated 2006 Employee Stock Purchase Plan, described as a tax-conditioned plan under Internal Revenue Code Section 423. No Rule 10b5-1 plan is reported.

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

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Available on EDGAR 10/02/2026 - 06:18 PM Accepted by SEC EDGAR 10/02/2026 - 06:17 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^*

SPORCK ALISTAIR N

(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)
	VP Contactor Business Unit

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

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	10/01/2026		F		54⁽¹⁾	D	$101.6	22,493⁽²⁾	D
Common Stock	10/01/2026		J		1,221⁽³⁾	A	$6.6725	6,398	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.

3. These shares have been purchased through the company's Amended and Restated 2006 Employee Stock Purchase Plan, a "tax-conditioned plan" Per Internal Revenue Code Section 423. This purchase is exempt from Section 16 of the Securities Exchange Act of 1934 regarding liabilities arising from six-month short-swing transactions in the Company's securities.

Remarks:

	/s/Chris Siu, Attorney-in-Fact	10/02/2026
	** 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