Aehr Test Systems (AEHR) Form 4 Filings

Aehr Test Systems Chief Operating Officer Adil Engineer reported a tax-related share withholding. On 2026-07-27, 142 shares of Common Stock were withheld at $77.48 per share to satisfy tax withholding obligations upon the vesting of restricted stock units, which the company states does not represent a sale by the reporting person.

Following this withholding, Engineer directly holds 46,977 shares of Common Stock, and this amount includes shares subject to unvested restricted stock units.

AEHR Test Systems director Scott Geoffrey Gates reported a bona fide gift of 2,874 shares of Common Stock on 2026-07-21, donated to the Scott Family Gift Fund. After the gift he directly holds 51,648 shares, including shares subject to unvested restricted stock units, plus indirect holdings of 30,686 shares by a trust and 30,000 shares by his spouse.

Aehr Test Systems executive Alistair N. Sporck, VP Contactor Business Unit, had 334 common shares withheld at $81.05 on July 20, 2026 to satisfy tax withholding obligations upon vesting of restricted stock units; this was not an open-market sale.

After this withholding, Sporck holds 25,680 shares directly, including unvested restricted stock units, and 5,177 shares indirectly through a trust.

Aehr Test Systems director Scott Geoffrey Gates reported multiple transactions in Common Stock on July 16, 2026. An account held indirectly by his spouse sold 20,000 shares at $82.1325 per share, leaving 30,000 shares indirectly held by the spouse. A trust through which he reports indirect ownership made a bona fide gift of 10,000 shares to the Scott Family Fund, with 30,686 shares remaining in that trust. He also reports 54,522 shares held directly, and this direct amount includes shares subject to unvested restricted stock units.

Aehr Test Systems President and CEO Erickson Gayn reported a tax-withholding disposition of 3,447 shares of common stock at $72.01 per share to cover taxes upon vesting of restricted stock units and restricted shares, which is described as not an open-market sale. Following this, he holds 198,578 shares directly, including unvested awards, and 197,723 shares indirectly through a trust.

Aehr Test Systems CTO Donald P. Richmond II reported a tax-withholding disposition of 328 shares of common stock at $72.01 per share. The shares were withheld to satisfy tax obligations upon vesting of restricted stock units and do not represent an open-market sale. Following this transaction, he directly holds 186,669 shares, which includes shares subject to unvested restricted stock units.

AEHR Test Systems Exec VP of Sales & Mktg. Vernon Rogers reported equity award transactions on July 13–14, 2026. He exercised options to acquire 40,000 shares of common stock at $1.635 per share and held 192,424 shares directly afterward, including shares subject to unvested restricted stock units. An aggregate 1,161 shares were withheld to satisfy tax withholding obligations upon restricted stock unit vesting, which footnotes state do not represent open-market sales by Rogers.

AEHR TEST SYSTEMS officer Alistair N. Sporck, VP Contactor Business Unit, reported routine equity activity. On July 13, 2026, 209 shares of common stock were withheld at $72.60 to satisfy tax obligations on vested restricted stock units, and this does not represent a sale. After these entries, Sporck holds 26,014 AEHR shares directly, including unvested RSUs, and 5,177 shares indirectly through a trust.

AEHR TEST SYSTEMS reports that CFO Chris Siu had 988 shares of common stock withheld at $72.60 per share to satisfy tax withholding obligations upon vesting of restricted stock units, which the company states is not a sale. After this, he holds 77,824 shares directly, including shares subject to unvested restricted stock units, and 5,706 shares indirectly through a trust.

AEHR TEST SYSTEMS CTO Donald P. Richmond II reported a tax-withholding disposition related to restricted stock unit vesting. On 2026-07-13, 423 shares of common stock were withheld at $72.60 per share to satisfy tax obligations, and this did not involve an open-market sale. Following the withholding, he holds 186,997 shares directly, including shares subject to unvested restricted stock units.

Aehr Test Systems President and CEO Gayn Erickson reported a compensation-related share withholding. On July 13, 2026, 4,404 common shares at $72.60 per share were withheld to satisfy tax obligations upon vesting of restricted stock units and restricted shares, which does not represent a sale by him. Following these entries, Erickson holds 202,025 shares directly, including unvested awards, and 197,723 shares indirectly through a trust.

AEHR Test Systems reports that Chief Operating Officer Adil Engineer had 387 shares of common stock withheld on July 13, 2026 to satisfy tax withholding obligations upon vesting of restricted stock units at $72.60 per share. This was a non-market tax-withholding disposition, not a sale. After this event, he reports 47,119 shares, including shares subject to unvested restricted stock units.

WIMMERS DIDIER reported acquisition or exercise transactions in this Form 4 filing.

AEHR TEST SYSTEMS Executive VP of R&D Didier Wimmers received an equity award of 2,369 shares of common stock in the form of restricted stock units at no cash cost. Following this grant, he directly holds 12,696 shares, including unvested restricted stock units. One-sixteenth of the total restricted stock units will vest at the end of each three full calendar months after the grant date, as long as he remains employed by the company on those dates.

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.

Aehr Test Systems VP Alistair N. Sporck reported routine equity compensation activity involving restricted stock units. He acquired a total of 8,534 shares of common stock as stock awards, including shares issued upon vesting of a performance-based RSU.

To cover tax withholding obligations on the vesting, the company withheld 2,472 shares at prices of $84.425 and $69.96 per share, which the filing states does not represent a sale by Sporck. After these transactions, he directly holds 26,223 shares, with an additional 5,177 shares held indirectly by a trust.

AEHR Test Systems executive Alberto Salamone reported routine equity compensation activity. He received grants of 1,978 and 4,048 shares of common stock at $0.00 per share as restricted stock unit awards, including performance-based RSUs. The awards vest in equal one-sixteenth installments every three full calendar months, as long as he remains employed. To cover related tax obligations upon vesting, 1,453 shares at $84.425 and 556 shares at $69.96 were withheld by the company, which the disclosure states does not represent market sales. Following these transactions, Salamone directly holds 51,838 shares, and this amount includes shares subject to unvested restricted stock units.

AEHR TEST SYSTEMS CTO Donald P. Richmond II reported routine stock-based compensation activity. On July 1, he received awards totaling 6,165 and 2,369 shares of common stock at no cost in connection with restricted stock units, including performance-based RSUs. A total of 2,524 shares were withheld on July 1 and July 2 at prices of $84.425 and $69.96 per share to cover tax obligations upon vesting, which the company notes do not represent sales. After these transactions, he directly holds 187,420 shares, and this amount includes shares subject to unvested restricted stock units that will vest over time if employment conditions are met.

Aehr Test Systems executive Vernon Rogers reported compensation-related stock activity rather than open-market trading. On July 1, 2026, he acquired 6,165 and 2,393 shares of common stock at $0.00 per share as shares were issued upon vesting of performance-based restricted stock units, according to the footnotes.

To satisfy tax withholding obligations from these vestings, 2,213 shares were withheld on July 1, 2026 at $84.425 per share and 337 shares were withheld on July 2, 2026 at $69.96 per share. The filing notes these tax withholdings do not represent sales by Rogers. After these transactions, he directly holds 153,585 shares of common stock, which include shares subject to unvested restricted stock units.

AEHR Test Systems President and CEO Gayn Erickson reported compensation-related stock activity. On July 1, he received 35,886 and 11,899 shares of common stock at $0.00 per share from RSU awards, including performance-based RSUs. On July 1 and July 2, a total of 26,016 shares were withheld at $84.425 and $69.96 per share to cover tax obligations, which the filing states are not sales. After these transactions, he holds 206,429 shares directly and 197,723 shares indirectly through a trust.

AEHR Test Systems Chief Operating Officer Adil Engineer reported equity compensation changes tied to restricted stock units. On July 1, he acquired 3,079 and 6,165 shares of common stock at $0.00 per share as grants or awards upon vesting of performance-based and other RSUs.

To cover tax obligations on these vestings, 2,213 shares on July 1 at $84.425 and 437 shares on July 2 at $69.96 were withheld, which the filing states do not represent sales. After these transactions, he directly holds 47,506 shares, and this amount includes shares subject to unvested RSUs.

DANESH FARIBA reported acquisition or exercise transactions in this Form 4 filing.

AEHR Test Systems director Fariba Danesh received a grant of 1,658 shares of Common Stock through restricted stock unit awards at no cash cost. One-fourth of the units will vest at the end of each three full calendar months, as long as she continues serving on the Board. Following this award, she is reported as holding 14,801 shares of Common Stock, and this amount includes shares subject to unvested restricted stock units.

SCOTT GEOFFREY GATES reported acquisition or exercise transactions in this Form 4 filing.

Aehr Test Systems director Geoffrey Scott reported updated holdings and a new equity award. He received 1,658 shares of common stock as a grant or award at $0.0000 per share, increasing his direct ownership to 54,522 shares. The filing also reflects indirect holdings of 50,000 shares held by his spouse and 40,686 shares held by a trust.

According to the footnotes, these shares are subject to restricted stock unit terms. One-fourth of the RSU shares vest after each three full calendar months from the grant date, as long as he continues to serve on the Board. The reported amounts include unvested RSUs, meaning some shares are scheduled to vest over time rather than being fully available immediately.

AEHR TEST SYSTEMS director Laura Oliphant received an equity award of 1,658 shares of common stock as a grant or award. The shares were acquired at a stated price of $0.00 per share and are structured as restricted stock units.

After this award, Oliphant directly holds 18,317 shares of common stock, which includes shares subject to unvested restricted stock units. One-fourth of the total restricted stock unit award vests at the end of each three full calendar months following the grant date, as long as she continues to serve on the company’s Board of Directors.

SLAYEN HOWARD T reported acquisition or exercise transactions in this Form 4 filing.

Aehr Test Systems director Howard T. Slayen received a grant of 1,658 shares of Common Stock, awarded at a price of $0.0000 per share. These shares are subject to restricted stock unit awards that vest in four equal parts every three full calendar months, as long as he continues serving on the Board of Directors. After this grant, he directly holds 171,367 shares of Common Stock, including shares subject to unvested restricted stock units.

POSEDEL RHEA J reported acquisition or exercise transactions in this Form 4 filing.

Aehr Test Systems director Rhea J. Posedel reported a new equity grant of 1,895 shares of common stock. The grant was received at no cash cost and increases her directly held shares to 47,156.

The award is in the form of restricted stock units. According to the filing, one-fourth of the total RSU amount vests at the end of each three full calendar months following the grant date, as long as she continues to serve on the Board of Directors. The report also shows 396,375 shares of common stock held indirectly through a trust, which includes shares subject to unvested restricted stock units.

Aehr Test Systems director Laura Oliphant reported charitable gifts of company stock. On June 18, 2026, she made three bona fide gifts totaling 57 shares of Aehr Test Systems common stock, with 19 shares in each transaction at a stated price of $0.00 per share.

The footnotes state that the shares were donated to Pets in Need, Peninsula Humane Society, and San Mateo Community Colleges Foundation. After these gifts, the reported direct holdings shown in the individual transaction lines range from 16,659 to 16,697 shares of common stock.

AEHR Test Systems Executive VP of R&D Didier Wimmers reported a routine tax-withholding transaction related to equity compensation. On the vesting of restricted stock units, 332 shares of common stock were withheld at a reference price of $114.59 per share to cover tax obligations, rather than being sold on the open market.

After this withholding, Wimmers is reported as beneficially owning 10,327 shares of AEHR common stock, and this total includes shares that remain subject to unvested restricted stock units. The filing emphasizes that the transaction does not represent a discretionary sale by the executive.

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.

AEHR Test Systems director Howard T. Slayen reported an open-market sale of 6,819 shares of the company’s common stock at $104.73 per share. After this transaction, he directly holds 169,709 shares. A footnote notes that this amount includes shares subject to unvested restricted stock units.

Aehr Test Systems CFO Chris Siu reported open-market sales of company common stock. He sold 1,600 shares at an average price of $106.78 per share through an indirect holding by a trust, and 470 shares at $108.00 per share from his direct holdings.

After these transactions, Siu holds 5,706 shares indirectly through a trust and 70,270 shares directly. A footnote states that the reported amounts include shares subject to unvested restricted stock units, meaning some of the remaining position is tied to equity awards that have not yet fully vested.

Aehr Test Systems director Geoffrey Scott Gates filed an amended insider report updating how a prior transaction was classified. The amendment corrects the transaction code from F to G, confirming a bona fide gift of 10,000 shares of Common Stock held indirectly through a trust. After this gift, he reports 40,686 shares held indirectly by a trust, 50,000 shares held indirectly by his spouse, and 52,864 shares held directly.

AEHR TEST SYSTEMS executive Alberto Salamone reported a routine tax-related share disposition. Upon vesting of restricted stock units, 204 shares of Common Stock were withheld to satisfy tax withholding obligations at an effective price of $93.07 per share, according to the Form 4.

After this withholding, Salamone directly holds 47,821 shares of AEHR Common Stock, and this amount includes shares subject to unvested restricted stock units. The footnotes clarify that this withholding does not represent an open-market sale by the reporting person but a non-market, compensation-related tax payment.

Aehr Test Systems director Geoffrey Scott Gates reported updated holdings of the company’s Common Stock. The Form 4 shows an indirect disposition of 10,000 shares coded as a tax-withholding transaction, leaving 40,686 shares held indirectly through a trust and 50,000 shares held indirectly by his spouse.

Following these entries, Gates also reports 52,864 shares held directly. A footnote states that the 10,000 shares were donated to a Charitable Gift Fund and that the reported amounts include shares subject to unvested restricted stock units, so part of his position is still vesting over time.

AEHR TEST SYSTEMS executive Alistair N. Sporck reported routine equity activity involving company stock. The filing shows that 133 shares of common stock at $88.48 per share were withheld to cover tax obligations when restricted stock units vested, which the company notes does not represent a sale by Sporck. After this tax withholding, he directly holds 20,161 shares of common stock and indirectly holds 5,177 shares through a trust, and the indirect amount includes shares subject to unvested restricted stock units. The transactions reflect compensation and tax mechanics rather than open-market trading.

AEHR Test Systems executive Vernon Rogers reported a routine tax-related share disposition. On this Form 4, 139 shares of Common Stock were withheld at $88.48 per share to cover tax obligations when restricted stock units vested. The filing notes this was not an open-market sale. After this withholding, Rogers directly held 147,577 shares, which the filing states includes shares subject to unvested restricted stock units.

AEHR TEST SYSTEMS CTO Donald P. Richmond II reported a small tax-related share disposition. On this Form 4, 102 shares of common stock were withheld at $88.48 per share to cover tax obligations upon vesting of restricted stock units. The footnote clarifies this was not an open-market sale. After this withholding, he directly holds 181,410 shares, including shares subject to unvested restricted stock units.

AEHR TEST SYSTEMS President and CEO Gayn Erickson had 851 shares of common stock withheld at $88.48 per share to cover tax obligations when restricted stock units vested. This was a tax-withholding event, not an open-market sale.

After this transaction, Erickson holds 184,660 shares directly. An additional 197,723 shares are held indirectly by a trust, and this indirect amount includes shares subject to unvested restricted stock units and unvested restricted shares.

AEHR TEST SYSTEMS Chief Operating Officer Adil Engineer reported a routine tax-related share disposition. On the vesting of restricted stock units, 143 shares of common stock were withheld at $88.48 per share to satisfy tax withholding obligations. This was not an open-market sale. Following the withholding, Engineer holds 40,912 shares directly, and this amount includes shares subject to unvested restricted stock units.

Aehr Test Systems director Rhea J. Posedel reported open-market sales of company stock. On April 22, 2026, a trust associated with Posedel sold 604 shares of Aehr Test Systems common stock at $95.00 per share, reported as indirect ownership.

On the same date, Posedel directly sold an additional 17,115 shares at $100.00 per share. After these transactions, filings show 396,375 shares held indirectly by a trust and 45,261 shares held directly, with the indirect amount including shares subject to unvested restricted stock units. Overall, the activity reflects a partial reduction rather than an exit.

AEHR Test Systems executive Alistair N. Sporck, VP Contactor Business Unit, reported an indirect open‑market sale of 2,000 shares of common stock at $93.495 per share through a trust. After this transaction, the trust holds 5,177 shares indirectly. Sporck also reports 20,294 shares held directly, and this direct amount includes shares subject to unvested restricted stock units.

AEHR TEST SYSTEMS EVP Alberto Salamone reported two open-market sales of common stock. He sold 15,000 shares at $94.56 on April 21, 2026 and 15,000 shares at $89.57 on April 20, 2026, totaling 30,000 shares sold.

After these sales, he directly holds 48,025 shares of AEHR common stock. A footnote states this amount includes shares subject to unvested restricted stock units, meaning part of his reported holdings are still vesting over time.

Aehr Test Systems director Howard T. Slayen reported a charitable stock gift. He transferred 1,800 shares of Common Stock as a bona fide gift at a stated price of $0.00 per share. The shares were donated to a Donor Advised Charitable Giving Fund.

After the gift, Slayen directly owns 176,528 shares of Aehr Test Systems common stock, and this amount includes shares subject to unvested restricted stock units. The filing shows no option exercises or open-market stock purchases or sales, only this charitable transfer.

Aehr Test Systems director Geoffrey Scott reported net open-market sales of 60,000 shares of Common Stock. Entities associated with him sold 50,000 shares at $95.00 per share through his spouse and 10,000 shares at $91.00 per share through a trust.

Following these transactions, he reports 52,864 shares held directly, 50,000 shares held indirectly by his spouse, and 50,686 shares held indirectly by a trust. The reported amounts include shares subject to unvested restricted stock units.

Aehr Test Systems executive Vernon Rogers sold 5,000 shares of Common Stock in an open-market transaction at $90.00 per share. After the sale, he directly holds 147,716 shares, which the disclosure states include shares subject to unvested restricted stock units. The transaction represents a small portion of his reported holdings and reflects a routine sale by the company’s Executive Vice President of Sales & Marketing.

Aehr Test Systems director Rhea J. Posedel reported an open-market sale of 8,787 shares of Common Stock at an average price of $96.0233 per share. The transaction occurred on April 21, 2026 and was recorded as a non-derivative sale.

Following the sale, she directly holds 62,376 Aehr shares. A separate indirect holding entry shows 396,979 shares held by a trust, and a footnote explains that this amount includes shares subject to unvested restricted stock units.

Aehr Test Systems executive vice president of sales and marketing Vernon Rogers reported an open-market sale of 6,486 shares of Common Stock at $94.0904 per share on April 21, 2026.

After this transaction, he directly holds 152,716 shares, and this figure includes shares underlying unvested restricted stock units. The sale amounts to roughly a small single-digit percentage of his reported holdings.

AEHR TEST SYSTEMS executive Alistair N. Sporck reported updated holdings of company stock. A Form 4 entry shows 341 shares of Common Stock were withheld at $83.86 per share to satisfy tax obligations upon the vesting of restricted stock units, which the footnote clarifies is not an open-market sale.

After this tax-withholding transaction, Sporck directly holds 20,294 shares of Common Stock, and an additional 7,177 shares are held indirectly through a trust. The disclosed direct holdings figure also includes shares underlying unvested restricted stock units.

Aehr Test Systems executive Vernon Rogers sold 2,431 shares of Common Stock in an open-market transaction at $90.00 per share. After this sale, he directly holds 159,202 shares. A footnote explains that this remaining amount includes shares underlying unvested restricted stock units.

AEHR TEST SYSTEMS director Rhea J. Posedel reported an open-market sale of 7,500 shares of Common Stock at $88.09 per share through a trust. After this indirect transaction, the trust holds 396,979 shares. A separate entry shows 71,163 shares held directly, which includes shares subject to unvested restricted stock units.