Here are the Form 4 insider transactions from Aehr Test Systems (AEHR) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow AEHR and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full AEHR filings page.
Aehr Test Systems director Fariba Danesh exercised options and sold shares in a linked transaction. Danesh exercised 8,000 Non-Qualified Options for Common Stock at $2.25 per share, then sold 8,000 Common shares at an average price of $82.63 on the same date.
After these transactions, Danesh directly holds 13,143 Common shares, and the reported amount includes shares subject to unvested restricted stock units. No derivative options remain from this specific grant following the exercise.
AEHR Test Systems director Rhea J. Posedel reported an open-market sale of 7,500 shares of Common Stock on April 17, 2026 at $82.00 per share, executed through an account held indirectly "By Trust". After this transaction, the trust still holds 404,479 shares, and Posedel also reports 71,163 shares held directly. A footnote notes that these reported amounts include shares subject to unvested restricted stock units.
AEHR TEST SYSTEMS director Howard T. Slayen sold 25,000 shares of Common Stock in an open-market transaction at $85.00 per share. After this sale, he directly holds 178,328 shares. The reported holdings include shares subject to unvested restricted stock units, which may vest over time under company equity award terms.
Aehr Test Systems director Laura Oliphant reported an open-market sale of 1,716 shares of Common Stock on April 16, 2026 at $81.54 per share. After this transaction, she directly held 16,716 shares, and this amount includes shares subject to unvested restricted stock units.
AEHR TEST SYSTEMS executive Vernon Rogers, Executive VP of Sales & Marketing, reported an open-market sale of company common stock. On April 16, 2026, he sold 5,000 shares at $86.88 per share. Following this transaction, he directly holds 161,633 shares, which include shares subject to unvested restricted stock units.
AEHR Test Systems VP Alistair N. Sporck sold shares in the company. On April 16, 2026, he executed an open-market sale of 2,000 shares of common stock at $81.8800 per share. After this sale, he directly holds 20,635 shares and indirectly holds 7,177 shares through a trust.
A footnote explains that the reported amounts include shares subject to unvested restricted stock units, meaning some of his reported holdings are still vesting and not yet fully unrestricted.
AEHR Test Systems director Laura Oliphant reported an indirect sale of 4,665 shares of Common Stock at an average price of $85.5879 per share. The shares were held by a trust, and this transaction reduced that indirect position to zero shares. After the sale, she continues to hold 18,432 shares directly, which include shares subject to unvested restricted stock units.
AEHR TEST SYSTEMS director Rhea J. Posedel, through a trust, sold 15,000 shares of common stock in an open-market transaction at $80.72 per share.
After the sale, the trust holds 411,979 shares, including shares subject to unvested restricted stock units, and Posedel also holds 71,163 shares directly.
Aehr Test Systems director Geoffrey Scott Gates filed an amended Form 4 to correct details of previously reported stock sales on April 9, 2026. The amendment updates share counts and prices for his spouse’s indirect open-market sales of company common stock.
The corrected data show three sales totaling 40,000 shares of common stock at prices of $68.00, $68.12, and $67.79 per share. After these transactions, his spouse held 100,000 shares indirectly, while he also held 52,864 shares directly and 60,686 shares indirectly through a trust.
AEHR Test Systems executive Didier Wimmers reported open-market sales of 5,400 shares of common stock. He sold 3,500 shares on April 13, 2026 at an average price of $71.1102 per share and 1,900 shares on April 15, 2026 at an average price of $72.0239.
After these transactions, Wimmers directly holds 10,659 shares of AEHR common stock, and this amount includes shares subject to unvested restricted stock units. All reported transactions were classified as open-market sales.
Aehr Test Systems CTO Donald P. Richmond II sold 17,011 shares of Common Stock in an open-market transaction. The shares were sold at an average price of $73.1764 per share. Following this sale, he directly holds 181,512 shares, which include shares subject to unvested restricted stock units.
AEHR Test Systems President and CEO Gayn Erickson had 2,784 shares of common stock withheld at $74.38 per share to cover tax obligations when restricted stock units and restricted shares vested. This was a tax-withholding event, not an open-market sale. After these withholdings, he holds 185,511 shares directly and 197,723 shares indirectly through a trust, including unvested restricted stock units and restricted shares.
AEHR Test Systems CFO Chris Siu reported a routine tax-related share withholding tied to equity compensation. On the RSU vesting date, 697 shares of common stock were withheld at an implied price of $70.43 per share to satisfy tax withholding obligations, and this was not an open-market sale. Following the withholding, Siu directly owns 70,740 common shares. He also has 7,306 shares held indirectly through a trust, and this amount includes shares subject to unvested restricted stock units.
AEHR TEST SYSTEMS executive Vernon Rogers, Exec VP of Sales & Marketing, reported routine tax-related share withholdings tied to vesting of restricted stock units. On April 14, 2026, 404 shares of common stock were withheld at $74.38 per share to satisfy tax obligations. On April 11, 2026, 503 shares were similarly withheld at $70.43 per share. A footnote clarifies these are tax-withholding dispositions and do not represent open-market sales. After these transactions, Rogers directly holds 166,633 shares of common stock, which the disclosure notes includes shares subject to unvested restricted stock units.
AEHR TEST SYSTEMS Chief Technology Officer Donald P. Richmond II reported routine tax-related share dispositions tied to restricted stock unit vesting, not open-market sales. A total of 722 shares of common stock were withheld to cover tax obligations at prices of $74.38 and $70.43 per share.
After these withholding transactions, Richmond directly holds 198,523 shares of AEHR common stock, which the disclosure states includes shares subject to unvested restricted stock units. The filing clarifies that the withheld shares do not represent a sale by the reporting person.
Aehr Test Systems President and CEO Gayn Erickson reported significant insider sales of Common Stock alongside a routine tax withholding. On April 10, 2026, he executed open-market sales totaling 152,824 shares at about $70.5831 per share, including both direct holdings and shares held indirectly by a trust.
On April 11, 2026, an additional 3,704 shares were disposed of at $70.4300 to satisfy tax withholding obligations upon vesting of restricted stock units and restricted shares, which the footnotes clarify does not represent a sale by the reporting person. After these transactions, Erickson holds 188,295 shares directly and 197,723 shares indirectly through a trust.
AEHR Test Systems vice president Alistair N. Sporck reported one open-market sale and one tax-related share withholding. On April 10, 2026, he sold 2,000 shares of common stock at $67.365 per share. On April 11, 2026, 220 shares were withheld to satisfy tax obligations upon vesting of restricted stock units, which the disclosure states does not represent a sale. Following these events, he holds 22,635 shares directly, and an additional 7,177 shares are held indirectly by a trust.
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.
Aehr Test Systems director Fariba Danesh exercised stock options and sold shares. On April 13, 2026, she exercised a non-qualified option to acquire 7,000 shares of common stock at $2.25 per share, then sold 7,000 shares at an average price of $71.4901. On April 10, 2026, she also sold 3,500 shares at $70.045 per share in open-market transactions. After these trades, she directly held 13,143 shares of common stock, and this amount includes shares subject to unvested restricted stock units.
Aehr Test Systems executive Vernon Rogers reported an open-market sale of 10,888 shares of Common Stock at $70.00 per share. After this transaction, he directly holds 167,540 shares. The reported holdings include shares that are subject to unvested restricted stock units.
AEHR Test Systems Chief Operating Officer Adil Engineer exercised stock options and sold shares in the company. He exercised options to acquire 10,582 shares of common stock at an exercise price of $9.45 per share, then sold 13,085 shares in open-market transactions at prices around the high‑$68 range. After these transactions, he directly holds 45,169 shares of AEHR common stock, and this amount includes shares underlying unvested restricted stock units.
AEHR Test Systems CTO Donald P. Richmond II reported an open-market sale of 15,751 shares of Common Stock on April 9, 2026 at an average price of $68.6849 per share. After this transaction, he directly holds 199,245 shares, which the footnote states includes shares subject to unvested restricted stock units.
AEHR TEST SYSTEMS director Laura Oliphant reported an open-market sale of common stock by a trust associated with her. The trust sold 3,000 shares of AEHR common stock at a price of $68.3575 per share on April 9, 2026. After this transaction, the trust continued to hold 4,665 shares indirectly. Separately, Oliphant also reported direct ownership of 18,432 shares of common stock, some of which are subject to unvested restricted stock units.
Aehr Test Systems director Rhea J. Posedel, through a trust, sold 30,000 shares of common stock in an open-market transaction at $70.00 per share on April 9, 2026. After this sale, the trust still holds 426,979 shares indirectly, and Posedel also holds 71,163 shares directly. The indirect holdings include shares subject to unvested restricted stock units, indicating a continuing equity stake tied to ongoing service or vesting conditions.
Aehr Test Systems director Geoffrey Scott Gates reported indirect open-market sales of AEHR common stock made by his spouse. On April 9, 2026, the spouse sold a total of 35,000 shares in three transactions at prices between $67.75 and $68.00 per share.
After these sales, the filing shows the spouse holding 105,000 indirect shares, while an additional 60,686 shares are held indirectly by a trust and 52,864 shares are held directly by Gates. A footnote states the reported amounts include shares subject to unvested restricted stock units.
Aehr Test Systems President and CEO Gayn Erickson filed an amended Form 4 to correct previously reported share counts and ownership form, not to report new trades. The filing confirms a prior tax-withholding disposition of 2,512 shares of Common Stock at $44.32 per share, after which he held 248,787 shares directly. It also clarifies that 2,131 shares at $6.67 per share are held indirectly by a trust, with 293,759 shares beneficially owned through that trust. The footnotes state that earlier Form 4 values for post-transaction holdings and the direct/indirect ownership designation were inaccurate and are now corrected.
AEHR Test Systems Executive VP of R&D Didier Wimmers completed an internal share purchase through the company’s employee stock purchase plan. On April 1, 2026, he acquired 1,873 shares of common stock at $6.6725 per share.
Following this transaction, Wimmers directly holds 16,059 shares of AEHR common stock, which includes shares tied to unvested restricted stock units. The purchase was made under the company’s tax-qualified Employee Stock Purchase Plan, which is treated as a tax-conditioned plan under Internal Revenue Code Section 423 and is exempt from certain short-swing trading liability rules.
Aehr Test Systems VP Alistair N. Sporck reported routine share movements involving compensation and employee purchase activity. On April 2, 298 shares of common stock at $44.32 per share were withheld to satisfy tax obligations upon vesting of restricted stock units, which the company states does not represent a sale. After this, he held 24,855 shares directly, including shares subject to unvested restricted stock units. On April 1, a separate 1,963-share transaction at $6.6725 per share, held indirectly by a trust, reflects shares purchased through the company’s employee stock purchase plan, which is described as a tax-conditioned plan exempt from certain Section 16 short-swing liability, with 7,177 shares held indirectly following that transaction.
AEHR Test Systems CFO Chris Siu reported routine equity-related transactions in company stock. On April 2, 821 shares of common stock at $44.32 per share were withheld to cover tax obligations upon vesting of restricted stock units, which the company notes is not a market sale. On April 1, 2,095 shares at $6.6725 per share were acquired through the company’s Employee Stock Purchase Plan and are held indirectly in a trust. Following these transactions, Siu holds 71,437 shares directly and 7,306 shares indirectly, with the indirect amount including shares subject to unvested restricted stock units.
AEHR TEST SYSTEMS executive Alberto Salamone reported routine equity compensation-related transactions. On April 2, 2026, 553 shares of common stock were withheld at $44.32 per share to cover tax obligations upon vesting of restricted stock units, which the disclosure states does not represent a sale by Salamone. On April 1, 2026, 1,672 shares of common stock 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. Following these transactions, Salamone directly held 78,025 shares of AEHR common stock, and this amount includes shares subject to unvested restricted stock units.
Aehr Test Systems executive Vernon Rogers reported routine equity compensation activity. On April 1, he acquired 1,558 shares of common stock at $6.6725 per share through the company’s Amended and Restated 2006 Employee Stock Purchase Plan, described as a tax-conditioned plan under Section 423 of the Internal Revenue Code and exempt from Section 16 short-swing rules.
On April 2, 336 shares of common stock valued at $44.32 per share were withheld to cover tax obligations when restricted stock units vested, which the disclosure clarifies is not a sale by Rogers. After these transactions, he directly holds 178,428 shares, and the reported amount includes shares underlying unvested restricted stock units.
Aehr Test Systems CTO Donald P. Richmond II reported routine equity compensation activity. On April 1, he acquired 2,120 shares of common stock at $6.6725 per share through the company’s Amended and Restated 2006 Employee Stock Purchase Plan, described as a tax-conditioned plan under Internal Revenue Code Section 423.
On April 2, 341 shares of common stock were withheld to satisfy tax obligations upon vesting of restricted stock units, which the company clarifies does not represent a sale by the reporting person. After these transactions, he directly owns 214,996 shares of common stock, and this amount includes shares subject to unvested restricted stock units.
AEHR Test Systems President and CEO Gayn Erickson reported routine share movements tied to equity compensation and tax obligations. On one date, 2,512 shares of common stock were withheld at $44.32 per share to cover tax liabilities upon vesting of restricted stock units, which a footnote clarifies does not represent a sale by him. A separate entry records 2,131 shares at $6.6725 per share as an “other” transaction, with a footnote noting certain shares were purchased through the company’s Amended and Restated 2006 Employee Stock Purchase Plan. Following these events, Erickson holds 250,918 shares directly and 291,628 shares indirectly through a trust.
AEHR TEST SYSTEMS Chief Operating Officer Adil Engineer reported routine equity compensation transactions. On April 1, 2026, he acquired 2,454 shares of common stock at $6.6725 per share through the company’s Amended and Restated 2006 Employee Stock Purchase Plan, described as a tax-conditioned plan under Internal Revenue Code Section 423.
On April 2, 2026, 458 shares of common stock valued at $44.32 per share were withheld to satisfy tax obligations upon vesting of restricted stock units, which the disclosure states does not represent a sale by the reporting person. After these transactions, Engineer directly owned 47,672 shares of common stock, and this amount includes shares subject to unvested restricted stock units.
Aehr Test Systems director Geoffrey Scott reported a charitable stock transfer. On a Form 4, he disclosed a bona fide gift of 5,104 shares of common stock to the Scott Family Fund. After the donation, he directly owns 52,864 shares and indirectly holds 60,686 shares through a trust and 140,000 shares through his spouse, with some amounts including unvested restricted stock units.
AEHR Test Systems Executive VP of R&D Didier Wimmers reported a tax-related share withholding tied to restricted stock units. On March 3, 2026, 364 shares of common stock were withheld at $41.64 per share to cover tax obligations, not as an open-market sale. Following this, he held 14,186 shares, which the disclosure notes includes unvested restricted stock units.
AEHR TEST SYSTEMS CFO Chris Siu reported a tax-related share withholding transaction. On March 1, 2026, 368 shares of common stock were withheld at $37.43 per share to satisfy tax obligations upon vesting of restricted stock units, which the footnotes clarify does not represent a sale by the reporting person.
Following this transaction, Siu directly owned 72,258 shares of common stock, and an additional 5,211 shares were held indirectly by a trust. The indirect position is reported as a holding entry, without a specified buy or sell action.
Aehr Test Systems director Rhea J. Posedel reported an insider sale of common stock through a trust associated with her. On February 13, 2026, the trust sold 13,998 shares of Aehr Test Systems common stock in an open-market transaction at $30.0151 per share.
After this transaction, the trust continued to hold 456,979 shares indirectly. Posedel also directly held 71,163 shares, and this direct amount includes shares subject to unvested restricted stock units.
Aehr Test Systems officer Alistair N. Sporck reported selling company stock. On 02/09/2026, Sporck, VP Contactor Business Unit, sold 2,700 shares of common stock at $27.57 per share and 300 shares at $27.59 per share, leaving 25,153 shares held directly and 5,214 shares held indirectly by a trust, which include shares subject to unvested restricted stock units.
Aehr Test Systems director Howard T. Slayen reported gifting 15,000 shares of common stock to family trusts. On 02/04/2026, he made three separate transfers of 5,000 shares each at a reported price of $0 per share, reflecting non-cash gifts.
The gifts went to the Leila James Slayen Trust, the Allison Elizabeth Slayen Trust, and the Max William Slayen Trust. After these transactions, Slayen beneficially owned 203,328 shares of Aehr Test Systems common stock, which the filing states includes shares subject to unvested restricted stock units.
AEHR Test Systems executive Alberto Salamone reported a small insider transaction related to equity compensation. On February 1, 2026, 234 shares of common stock were withheld at $25.64 per share to cover tax obligations when his restricted stock units vested. The filing explains this was not an open-market sale, but a share withholding for taxes. After this transaction, he beneficially owns 76,906 shares of AEHR common stock, which includes shares subject to unvested restricted stock units.
Aehr Test Systems vice president Alistair N. Sporck reported a routine tax-related share withholding tied to equity compensation. On January 27, 2026, 152 shares of common stock were withheld at $27.75 per share to satisfy tax obligations upon vesting of restricted stock units, which is not an open market sale.
After this transaction, Sporck beneficially owned 28,153 shares of Aehr Test Systems common stock directly, including shares subject to unvested restricted stock units, and 5,214 shares indirectly through a trust.
Aehr Test Systems executive Vernon Rogers reported a small tax-related share withholding. On January 27, 2026, 160 shares of common stock were withheld at $27.75 per share to cover tax obligations triggered by the vesting of restricted stock units.
This transaction is coded "F," indicating a tax withholding rather than an open-market sale, and the disclosure states it does not represent a sale by the reporting person. After this event, Rogers beneficially owned 177,206 shares of Aehr Test Systems common stock, which includes shares underlying unvested restricted stock units.
AEHR Test Systems CTO Donald P. Richmond II reported an automatic share withholding related to equity compensation. On 01/27/2026, 117 shares of common stock were withheld at $27.75 per share to cover tax obligations on vesting restricted stock units, which is not a market sale. Following this, he beneficially owned 213,217 shares directly, including shares subject to unvested restricted stock units.
Aehr Test Systems President and CEO Erickson Gayn, also a director, reported an automatic share withholding related to equity compensation. On January 27, 2026, 820 shares of common stock were withheld at $27.75 per share to cover tax obligations on vested restricted stock units, which is not a market sale.
After this transaction, Gayn beneficially owned 251,299 shares of common stock directly. He also reported an additional 291,628 shares held indirectly through a trust, which includes shares subject to unvested restricted stock units and unvested restricted shares.
AEHR TEST SYSTEMS Chief Operating Officer ENGINEER ADIL reported an automatic share withholding related to equity compensation. On 01/27/2026, 163 shares of common stock were withheld at $27.75 per share to cover tax obligations upon vesting of restricted stock units, which the company notes does not represent a sale. After this transaction, ADIL beneficially owned 45,676 common shares, including shares subject to unvested restricted stock units, all held in direct ownership.
AEHR TEST SYSTEMS director Laura Oliphant reported multiple open-market sales of common stock. On January 22, 2026, she sold 3,100, 1,026, 180, 100, and 140 shares of AEHR common stock at prices ranging from $31.38 to $31.485 per share.
After these transactions, she beneficially owned 18,432 shares directly and 7,665 shares indirectly through a trust. The directly held amount includes shares subject to unvested restricted stock units.
Aehr Test Systems officer Alistair N. Sporck reported a tax-related share withholding on company stock. On 01/19/2026, 387 shares of common stock were withheld at a price of $28.81 per share to cover tax obligations upon the vesting of restricted stock units. The filing clarifies that this was not a sale by the reporting person, but a share withholding for taxes.
After this transaction, Sporck beneficially owned 28,305 shares of Aehr Test Systems common stock directly, which includes shares subject to unvested restricted stock units. In addition, the filing reports 5,214 shares held indirectly through a trust.
AEHR Test Systems executive Vernon Rogers reported a routine tax-related share withholding. On 01/14/2026, 464 shares of AEHR common stock were withheld at $25.97 per share to cover tax obligations that arose when restricted stock units vested. The company notes this withholding does not represent a sale by the executive.
After this transaction, Rogers beneficially owned 177,366 shares, which includes shares underlying unvested restricted stock units. The filing reflects the executive’s updated equity position rather than an open-market trade.
AEHR TEST SYSTEMS chief technology officer Donald P. Richmond II reported a routine tax-related share withholding. On 01/14/2026, 343 shares of common stock were withheld at a price of $25.97 per share to cover tax obligations triggered by the vesting of restricted stock units, and this was not an open-market sale. After this transaction, he beneficially owned 213,334 shares, which include shares subject to unvested restricted stock units, all held in direct ownership form.