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[Form 4] AEHR TEST SYSTEMS Insider Trading Activity

Filing Impact
(High)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

AEHR TEST SYSTEMS CFO Chris Siu reported equity compensation activity and related tax withholding transactions. He acquired 6,165 and 6,079 shares of common stock as stock awards at no cost, including shares issued upon vesting of performance-based restricted stock units. To satisfy tax withholding obligations on these vestings, 2,213 shares at $84.425 per share and 1,139 shares at $69.96 per share were withheld, which the footnotes state do not represent sales by him. After these transactions, he directly holds 78,812 shares of common stock, and an additional 5,706 shares are held indirectly by a trust.

Positive

  • None.

Negative

  • None.
Insider Siu Chris
Role CFO
Type Security Shares Price Value
Tax Withholding Common Stock 1,139 $69.96 $80K
Grant/Award Common Stock 6,165 $0.00 --
Grant/Award Common Stock 6,079 $0.00 --
Tax Withholding Common Stock 2,213 $84.425 $187K
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 78,812 shares (Direct, null); Common Stock — 5,706 shares (Indirect, By Trust)
Footnotes (1)
  1. Represents shares of common stock issued upon vesting of performance-based RSU. One-sixteenth (1/16) of the total number of shares subject to the restricted stock unit awards shall vest at the end of each three full calendar months following the date of this action, provided that such recipient is still employed by the corporation on such dates. 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.
Stock award 1 6,165 shares Common stock grant/award at $0.00 per share on July 1, 2026
Stock award 2 6,079 shares Common stock grant/award at $0.00 per share on July 1, 2026
Tax withholding 1 2,213 shares at $84.425 Shares withheld for tax obligations on July 1, 2026
Tax withholding 2 1,139 shares at $69.96 Shares withheld for tax obligations on July 2, 2026
Direct holdings after transactions 78,812 shares Direct AEHR common stock owned by CFO after latest transaction
Indirect trust holdings 5,706 shares AEHR common stock held indirectly by trust as reported
Total tax-withheld shares 3,352 shares Aggregate F-code shares withheld for tax obligations
performance-based RSU financial
"Represents shares of common stock issued upon vesting of performance-based RSU."
Performance-based RSUs are promises to deliver company stock to employees only if the firm or the individual meets preset financial or operational targets; they convert into actual shares when those goals are achieved. For investors, they matter because they link pay to results—shaping management incentives, affecting future share count and earnings reports, and signaling how confident leadership is about hitting measurable milestones (think of a bonus that only pays out if sales or profit goals are reached).
restricted stock units financial
"Represents shares that were 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.
tax withholding obligations financial
"Represents shares that were withheld to satisfy tax withholding obligations upon vesting of restricted stock units."
indirect ownership financial
"Common Stock holding entry marked as indirect with nature of ownership "By Trust"."
grant, award, or other acquisition financial
"Transaction code A described as Grant, award, or other acquisition."
tax-withholding disposition financial
"Transaction action described as tax-withholding disposition for code F entries."
A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.
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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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)
Director10% Owner
XOfficer (give title below)Other (specify below)
CFO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock07/01/2026A6,165(1)A$076,085D
Common Stock07/01/2026A6,079(2)A$082,164D
Common Stock07/01/2026F2,213(3)D$84.42579,951D
Common Stock07/02/2026F1,139(3)D$69.9678,812(4)D
Common Stock5,706IBy 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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Represents shares of common stock issued upon vesting of performance-based RSU.
2. One-sixteenth (1/16) of the total number of shares subject to the restricted stock unit awards shall vest at the end of each three full calendar months following the date of this action, provided that such recipient is still employed by the corporation on such dates.
3. 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.
4. The amount reported includes shares subject to unvested restricted stock units.
Remarks:
/s/SIU CHRIS07/02/2026
** Signature of Reporting PersonDate
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