BetaInsiders sold $60.9M in the past 12 months.0% was sold under disclosed trading plans, 100% with no plan disclosed. The largest seller, Gayn Erickson (President and CEO, Director), sold $16.0M.Share-of-stake figures for this company are being verified and will be added when that check is finished. Why
A share of stake is shown for 0 of the 13 officers and directors who sold. 13 are left out Disclosed company stock is not an insider's whole wealth.i
Left out: Gayn Erickson, Rhea Posedel, Geoffrey Scott, Howard Slayen, Donald Richmond II, Chris Siu, Alberto Salamone, Vernon Rogers, Adil Engineer, Alistair Sporck, Laura Oliphant, Fariba Danesh and Didier Wimmers (share of stake is being verified).
Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.
Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.
| Who | Shares | Price | % of total stake | Total stake after | Trade date | Filed |
|---|---|---|---|---|---|---|
| Gayn Erickson President and CEO, Director | 3,239 | $107.21 | n/a | n/a | Oct 2, 2026 | Oct 5, 2026 |
| Chris Siu CFO | 1,164 | $107.21 | n/a | n/a | Oct 2, 2026 | Oct 5, 2026 |
| Adil Engineer Chief Operating Officer | 620 | $107.21 | n/a | n/a | Oct 2, 2026 | Oct 5, 2026 |
| Alberto Salamone EVP, Ppbi Business | 556 | $107.21 | n/a | n/a | Oct 2, 2026 | Oct 5, 2026 |
| Vernon Rogers Exec VP of Sales & Mktg. | 476 | $107.21 | n/a | n/a | Oct 2, 2026 | Oct 5, 2026 |
| Donald Richmond II CTO | 439 | $107.21 | n/a | n/a | Oct 2, 2026 | Oct 5, 2026 |
| Alistair Sporck VP Contactor Business Unit | 345 | $107.21 | n/a | n/a | Oct 2, 2026 | Oct 5, 2026 |
| Who | Shares | Price | % of total stake | Total stake after | Trade date | Filed |
|---|---|---|---|---|---|---|
| Gayn Erickson President and CEO, Director | 499 | $101.60 | n/a | n/a | Oct 1, 2026 | Oct 2, 2026 |
| Chris Siu CFO | 194 | $101.60 | n/a | n/a | Oct 1, 2026 | Oct 1, 2026 |
| Adil Engineer Chief Operating Officer | 98 | $101.60 | n/a | n/a | Oct 1, 2026 | Oct 2, 2026 |
| Vernon Rogers Exec VP of Sales & Mktg. | 77 | $101.60 | n/a | n/a | Oct 1, 2026 | Oct 2, 2026 |
| Donald Richmond II CTO | 76 | $101.60 | n/a | n/a | Oct 1, 2026 | Oct 2, 2026 |
| Alistair Sporck VP Contactor Business Unit | 54 | $101.60 | n/a | n/a | Oct 1, 2026 | Oct 2, 2026 |
| Didier Wimmers Executive VP of R&D | 54 | $101.60 | n/a | n/a | Oct 1, 2026 | Oct 2, 2026 |
| Alberto Salamone EVP, Ppbi Business | 45 | $101.60 | n/a | n/a | Oct 1, 2026 | Oct 2, 2026 |
"% of total stake" is the shares in an event against all the vested shares the person held that day, across every share class and holding entity, after that day's vesting. "n/a" means the person's holdings are not confirmed, or the row is a purchase. "Holdings record incomplete" means more shares were sold than the filings show the person held that day, so a percentage would be wrong.
Yes. Gayn Erickson sold 193K shares ($16.0M) in the past 12 months, none of it under a trading plan disclosed in the filings.
Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 0% of sales by value ran under 10b5-1 trading plans disclosed in the filings and 100% had no disclosed plan. A trading plan schedules sales in advance.
No. Officers and directors reported no purchases in the past 12 months.
| Who sold | Amount | % of holdings | Trading plan |
|---|---|---|---|
| Gayn Erickson President and CEO, Director | $16.0M 193K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Geoffrey Scott Director | $12.7M 140K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Rhea Posedel Director | $9.5M 115K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Howard Slayen Director | $5.9M 64K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Alberto Salamone EVP, Ppbi Business | $4.0M 40K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Vernon Rogers Exec VP of Sales & Mktg. | $3.3M 36K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Adil Engineer Chief Operating Officer | $3.1M 32K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Donald Richmond II CTO | $2.3M 33K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Fariba Danesh Director | $1.4M 19K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Laura Oliphant Director | $1.1M 16K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Alistair Sporck VP Contactor Business Unit | $879K 12K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Didier Wimmers Executive VP of R&D | $386K 5.4K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
| Chris Siu CFO | $222K 2.1K shares | Not confirmedshare of stake is being verified. Why | No plan disclosed |
Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.
| Insider | Held Oct 13, 2025 | Sold | Held Oct 13, 2026 | Still held | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gayn Erickson!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Gayn Erickson are complete. President and CEO, Director | n/a | −193K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Gayn EricksonHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Gayn Erickson are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −63Kwithheld by the company for taxes | ||||||||||||||||
Rhea Posedel!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Rhea Posedel are complete. Director | n/a | −115K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Rhea PosedelHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Rhea Posedel are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||||||||||||||
Geoffrey Scott!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Geoffrey Scott are complete. Director | n/a | −140K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Geoffrey ScottHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Geoffrey Scott are complete; balances and unit counts will be added when the check is finished. −35Kgifted (net of own trusts) | ||||||||||||||||
Howard Slayen!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Howard Slayen are complete. Director | n/a | −64K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Howard SlayenHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Howard Slayen are complete; balances and unit counts will be added when the check is finished. −22Kgifted (net of own trusts) | ||||||||||||||||
Donald Richmond II!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Donald Richmond II are complete. CTO | n/a | −33K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Donald Richmond IIHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Donald Richmond II are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −6.8Kwithheld by the company for taxes | ||||||||||||||||
Chris Siu!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Chris Siu are complete. CFO | n/a | −2.1K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Chris SiuHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Chris Siu are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −11Kwithheld by the company for taxes | ||||||||||||||||
Alberto Salamone!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Alberto Salamone are complete. EVP, Ppbi Business | n/a | −40K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Alberto SalamoneHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Alberto Salamone are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −4.6Kwithheld by the company for taxes | ||||||||||||||||
Vernon Rogers!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Vernon Rogers are complete. Exec VP of Sales & Mktg. | n/a | −36K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Vernon RogersHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Vernon Rogers are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −8Kwithheld by the company for taxes | ||||||||||||||||
Adil Engineer!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Adil Engineer are complete. Chief Operating Officer | n/a | −32K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Adil EngineerHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Adil Engineer are complete; balances and unit counts will be added when the check is finished. −500gifted (net of own trusts) −6.1Kwithheld by the company for taxes Stock options (not counted as shares):
Estimate: options held × ($143.77 − strike price), using the most recent insider trade price on Form 4 (Aug 17, 2026), not a market close. | ||||||||||||||||
Alistair Sporck!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Alistair Sporck are complete. VP Contactor Business Unit | n/a | −12K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Alistair SporckHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Alistair Sporck are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −6.1Kwithheld by the company for taxes | ||||||||||||||||
Laura Oliphant!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Laura Oliphant are complete. Director | n/a | −16K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Laura OliphantHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Laura Oliphant are complete; balances and unit counts will be added when the check is finished. −557gifted (net of own trusts) | ||||||||||||||||
Fariba Danesh!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Fariba Danesh are complete. Director | n/a | −19K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Fariba DaneshHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Fariba Danesh are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) | ||||||||||||||||
Didier Wimmers!Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Didier Wimmers are complete. Executive VP of R&D | n/a | −5.4K | n/a | n/a | ||||||||||||
Vesting, gifts, unvested awards and holding lines for Didier WimmersHoldings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Didier Wimmers are complete; balances and unit counts will be added when the check is finished. 0gifted (net of own trusts) −1.4Kwithheld by the company for taxes | ||||||||||||||||
Holdings and share of stake for Aehr Test Systems are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.
Officer and director open-market sales: $60.9M across 704,893 shares. Plan status and stated purpose are separate questions, and a sale can have both.
Sales with no 10b5-1 plan and no tax reference in the filing. $16.0M of it is Gayn Erickson. No plan disclosed is a statement about the filing, not about why the sale happened. Largest such sale: Gayn Erickson, Apr 10, 2026
106,180 shares ($7.1M) were withheld by the company for taxes, which isn't a market sale.
Gifts the filings describe as charitable. Gifts are not sales and are not included in the sale totals.
| Seller | Shares sold | Proceeds | Under a disclosed plan | Share of total | Sales dates |
|---|---|---|---|---|---|
| Gayn Erickson President and CEO, Director | 193K | $16.0M | 0% | 26% | Apr 10, 2026 to Aug 12, 2026 |
| Geoffrey Scott Director | 140K | $12.7M | 0% | 21% | Apr 9, 2026 to Aug 12, 2026 |
| Rhea Posedel Director | 115K | $9.5M | 0% | 16% | Feb 13, 2026 to Aug 14, 2026 |
| Howard Slayen Director | 64K | $5.9M | 0% | 10% | Nov 5, 2025 to Aug 14, 2026 |
| Alberto Salamone EVP, Ppbi Business | 40K | $4.0M | 0% | 7% | Apr 20, 2026 to Aug 13, 2026 |
| Vernon Rogers Exec VP of Sales & Mktg. | 36K | $3.3M | 0% | 5% | Apr 10, 2026 to Aug 17, 2026 |
| Adil Engineer Chief Operating Officer | 32K | $3.1M | 0% | 5% | Apr 9, 2026 to Aug 12, 2026 |
| Donald Richmond II CTO | 33K | $2.3M | 0% | 4% | Apr 9, 2026 to Apr 14, 2026 |
| Fariba Danesh Director | 19K | $1.4M | 0% | 2% | Apr 10, 2026 to Apr 16, 2026 |
| Laura Oliphant Director | 16K | $1.1M | 0% | 2% | Jan 22, 2026 to Aug 12, 2026 |
| Alistair Sporck VP Contactor Business Unit | 12K | $879K | 0% | 1% | Feb 9, 2026 to Aug 10, 2026 |
| Didier Wimmers Executive VP of R&D | 5.4K | $386K | 0% | 0.6% | Apr 13, 2026 to Apr 15, 2026 |
| Chris Siu CFO | 2.1K | $222K | 0% | 0.4% | May 14, 2026 to May 14, 2026 |
| Month | Sale proceeds | Disclosed plan | To cover taxes | No plan disclosed |
|---|---|---|---|---|
| Oct 2025 | $0 | $0 | $0 | $0 |
| Nov 2025 | $154K | $0 | $0 | $154K |
| Dec 2025 | $0 | $0 | $0 | $0 |
| Jan 2026 | $143K | $0 | $0 | $143K |
| Feb 2026 | $503K | $0 | $0 | $503K |
| Mar 2026 | $0 | $0 | $0 | $0 |
| Apr 2026 | $40.2M | $0 | $0 | $40.2M |
| May 2026 | $936K | $0 | $0 | $936K |
| Jun 2026 | $0 | $0 | $0 | $0 |
| Jul 2026 | $1.6M | $0 | $0 | $1.6M |
| Aug 2026 | $17.3M | $0 | $0 | $17.3M |
| Sep 2026 | $0 | $0 | $0 | $0 |
| Oct 2026 | $0 | $0 | $0 | $0 |
In line with the past 5 years. 13 insiders sold; the average is 9 a year.
| 12 months ending | Shares sold | Insiders who sold | Proceeds |
|---|---|---|---|
| Oct 13, 2026 Latest 12 months | 705K | 13 | $60.9M |
| Oct 13, 2025 1 year earlier | 40K | 5 | $775K |
| Oct 13, 2024 2 years earlier | 21K | 6 | $405K |
| Oct 14, 2023 3 years earlier | 1.50M | 12 | $56.1M |
| Oct 14, 2022 4 years earlier | 483K | 11 | $10.6M |
| Oct 14, 2021 5 years earlier | 1.10M | 11 | $14.8M |
Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.
Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Aehr Test Systems are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.
External context: we only cite outside events when a documented connection exists. None is shown for this period.
All 1,433 Forms 3, 4 and 5 on record for Aehr Test Systems (SEC CIK 1040470), filed from Jul 24, 2003 to Oct 5, 2026; 169 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 13, 2026. Prices are the ones reported in each filing, often weighted averages.
Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.
Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".
Spotted something wrong on this page? Report an error. We check every report against the SEC filing and list what we fix in the corrections log.