AEHRNasdaqInstruments For Meas & Testing of Electricity & Elec SignalsFiscal year ends December 31
AEHR TEST SYSTEMS
Financials through Q4 FY2026, quarter ended May 29, 2026Last filing: 10-K on Jul 27, 2026
$63.33+2.73 (+4.50%)
Close on Oct 19, 2026
- Market cap
- $2.02B
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
71.3%
23M of 33M shares
Institutional holders
262
105 new, 30 sold out
Net institutional buying
1M
In Q2 2026
Insider trades, 12 months
0 buys · 73 sales
Net sold $63.27M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| BlackRock, Inc. | 2,077,807 | 7.20% | 13G (passive) | Dec 31, 2023 |
| Jane Street Group, LLC | 1,648,523 | 5.10% | 13G (passive) | Jul 24, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of AEHR | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 2,659,542 | 8.15% | $255.48M | +372,643 | 0.00% |
| Vanguard Capital Management LLC | 1,320,350 | 4.05% | $126.83M | +38,493 | 0.00% |
| D. E. Shaw & Co., Inc. | 1,177,421 | 3.61% | $113.10M | +835,783 | 0.05% |
| Two Sigma Investments, LP | 1,164,614 | 3.57% | $111.87M | +950,242 | 0.08% |
| FMR LLC | 1,006,830 | 3.09% | $96.72M | −1,135,809 | 0.00% |
| Vanguard Portfolio Management LLC | 966,659 | 2.96% | $92.86M | +48,783 | 0.00% |
| Geode Capital Management, LLC | 875,505 | 2.68% | $84.11M | +149,794 | 0.00% |
| Goldman Sachs Group Inc | 810,036 | 2.48% | $77.81M | −452,007 | 0.01% |
| Jane Street Group, LLC | 753,523 | 2.31% | $72.38M | +476,478 | 0.01% |
| JPMorgan Chase & Co | 732,547 | 2.25% | $69.55M | +542,208 | 0.00% |
| State Street Corp | 712,926 | 2.19% | $68.48M | +89,620 | 0.00% |
| Connor, Clark & Lunn Investment Management Ltd. | 670,758 | 2.06% | $64.43M | +451,949 | 0.12% |
| Price T Rowe Associates Inc /Md/ | 507,035 | 1.55% | $48.71K | −842,316 | 0.00% |
| Morgan Stanley | 480,400 | 1.47% | $46.15M | +314,727 | 0.00% |
| Next Century Growth Investors LLC | 410,731 | 1.26% | $39.45M | −344,006 | 2.09% |
| Citadel Advisors LLC | 400,732 | 1.23% | $38.49M | +259,441 | 0.00% |
| Marshall Wace, Llp | 382,738 | 1.17% | $36.77M | +372,527 | 0.03% |
| AWM Investment Company, Inc. | 374,808 | 1.15% | $36.00M | −1,219,163 | 3.12% |
| T. Rowe Price Investment Management, Inc. | 318,127 | 0.98% | $30.56K | New | 0.02% |
| Invesco Ltd. | 296,226 | 0.91% | $28.46M | +10,501 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 262 | 23M | 71.3% | 105 / 74 | 70 / 30 | 9M | 8M |
| Q1 2026 | 191 | 22M | 68.9% | 62 / 61 | 47 / 17 | 8M | 4M |
| Q4 2025 | 150 | 21M | 65.0% | 29 / 57 | 42 / 27 | 3M | 2M |
| Q3 2025 | 149 | 20M | 62.5% | 47 / 43 | 39 / 19 | 5M | 2M |
| Q2 2025 | 121 | 18M | 54.1% | 27 / 45 | 28 / 21 | 2M | 3M |
| Q1 2025 | 115 | 19M | 58.6% | 21 / 39 | 39 / 37 | 2M | 4M |
| Q4 2024 | 132 | 21M | 64.1% | 29 / 41 | 42 / 22 | 4M | 3M |
| Q3 2024 | 126 | 21M | 63.7% | 30 / 42 | 35 / 22 | 8M | 5M |
| Q2 2024 | 119 | 19M | 59.0% | 31 / 48 | 32 / 42 | 5M | 5M |
| Q1 2024 | 132 | 19M | 59.1% | 26 / 42 | 45 / 61 | 6M | 7M |
| Q4 2023 | 168 | 21M | 63.0% | 54 / 64 | 37 / 39 | 8M | 8M |
| Q3 2023 | 153 | 21M | 63.6% | 34 / 67 | 38 / 30 | 4M | 3M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of AEHR | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 950,950 | 2.92% | $91.35M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 785,890 | 2.41% | $75.49M | 0.09% | Jun 30, 2026 |
| Vanguard Information Technology Index Fund | 711,110 | 2.18% | $65.66M | 0.04% | May 31, 2026 |
| Fidelity Small Cap Growth Fund | 656,170 | 2.01% | $52.48M | 0.60% | Jul 31, 2026 |
| Fidelity Small Cap Growth K6 Fund | 346,719 | 1.06% | $27.73M | 0.60% | Jul 31, 2026 |
| Vanguard Extended Market Index Fund | 339,037 | 1.04% | $32.57M | 0.03% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 334,923 | 1.03% | $26.79M | 0.08% | Jul 31, 2026 |
| T. Rowe Price New Horizons Fund, Inc. | 328,543 | 1.01% | $31.56M | 0.21% | Jun 30, 2026 |
| iShares Russell 2000 Growth ETF | 280,984 | 0.86% | $26.99M | 0.17% | Jun 30, 2026 |
| Lord Abbett Developing Growth Fund Inc | 218,617 | 0.67% | $17.48M | 0.79% | Jul 31, 2026 |
| Invesco Dorsey Wright Technology Momentum ETF | 217,973 | 0.67% | $17.43M | 2.99% | Jul 31, 2026 |
| JPMorgan Small Cap Growth Fund | 184,704 | 0.57% | $17.74M | 0.68% | Jun 30, 2026 |
| Vanguard Russell 2000 Index Fund | 150,495 | 0.46% | $13.90M | 0.08% | May 31, 2026 |
| Fidelity Extended Market Index Fund | 148,995 | 0.46% | $13.76M | 0.03% | May 31, 2026 |
| Berkshire Focus Fund | 142,640 | 0.44% | $13.70M | 2.97% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Gayn Erickson | President and CEO, Director | 393,696 | 1.21% | Aug 13, 2026 |
| Didier Wimmers | Executive VP of R&D | 12,379 | 0.04% | Sep 3, 2026 |
| Chris Siu | CFO | 83,034 | 0.25% | Sep 1, 2026 |
| Vernon Rogers | Exec VP of Sales & Mktg. | 186,232 | 0.57% | Aug 18, 2026 |
| Alberto Salamone | EVP, PPBI BUSINESS | 47,434 | 0.15% | Aug 14, 2026 |
| Adil Engineer | Chief Operating Officer | 46,477 | 0.14% | Aug 14, 2026 |
| Alistair N. Sporck | VP Contactor Business Unit | 27,724 | 0.08% | Aug 11, 2026 |
| Donald P. Richmond Ii | CTO | 186,567 | 0.57% | Jul 27, 2026 |
| Avijit K. Ray-Chaudhuri | Executive VP of R&D | 28,318 | 0.09% | Oct 29, 2024 |
| Rhea J. Posedel | – | 429,145 | 1.32% | Aug 14, 2026 |
| Howard T. Slayen | – | 140,667 | 0.43% | Aug 14, 2026 |
| Laura Oliphant | – | 16,100 | 0.05% | Aug 13, 2026 |
| Geoffrey Gates Scott | – | 85,603 | 0.26% | Aug 13, 2026 |
| Fariba Danesh | – | 21,509 | 0.07% | Jul 2, 2026 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Didier Wimmers Executive VP of R&D | Sep 3, 2026 | Tax withholding | −317 | $76.27 | $24.18K | 12,379 |
| Chris Siu CFO | Sep 1, 2026 | Tax withholding | −496 | $76.59 | $37.99K | 77,328 |
| Vernon Rogers Exec VP of Sales & Mktg. | Aug 17, 2026 | Sale | −3,994 | $143.77 | $574.22K | 186,232 |
| Vernon Rogers Exec VP of Sales & Mktg. | Aug 14, 2026 | Sale | −1,000 | $134.00 | $134.00K | 191,226 |
| Vernon Rogers Exec VP of Sales & Mktg. | Aug 14, 2026 | Sale | −1,000 | $139.00 | $139.00K | 190,226 |
| Adil Engineer Chief Operating Officer | Aug 14, 2026 | Gift | −500 | – | – | 46,477 |
| Howard T. Slayen – | Aug 14, 2026 | Sale | −5,700 | $133.03 | $758.27K | 140,667 |
| Rhea J. Posedel – | Aug 14, 2026 | Sale | −5,973 | $140.00 | $836.22K | 381,989 |
| Alberto Salamone EVP, PPBI BUSINESS | Aug 13, 2026 | Sale | −4,200 | $128.00 | $537.60K | 47,434 |
| Alberto Salamone EVP, PPBI BUSINESS | Aug 13, 2026 | Sale | −5,472 | $127.50 | $697.68K | 41,962 |
| Adil Engineer Chief Operating Officer | Aug 12, 2026 | Sale | −7,500 | $130.95 | $982.12K | 54,477 |
| Adil Engineer Chief Operating Officer | Aug 12, 2026 | Sale | −7,500 | $131.10 | $983.25K | 46,977 |
| Adil Engineer Chief Operating Officer | Aug 12, 2026 | Option exercise | +15,000 | $9.45 | $141.75K | 61,977 |
| Gayn Erickson President and CEO, Director | Aug 12, 2026 | Sale | −1,548 | $132.27 | $204.75K | 196,175 |
| Gayn Erickson President and CEO, Director | Aug 12, 2026 | Sale | −38,452 | $130.79 | $5.03M | 157,723 |
| Rhea J. Posedel – | Aug 12, 2026 | Sale | −8,413 | $130.00 | $1.09M | 387,962 |
| Laura Oliphant – | Aug 12, 2026 | Sale | −1,717 | $133.00 | $228.36K | 16,100 |
| Geoffrey Gates Scott – | Aug 12, 2026 | Gift | −6,731 | – | – | 23,955 |
| Geoffrey Gates Scott – | Aug 12, 2026 | Sale | −20,000 | $131.51 | $2.63M | 10,000 |
| Alistair N. Sporck VP Contactor Business Unit | Aug 10, 2026 | Sale | −1,000 | $108.49 | $108.49K | 22,547 |
| Alistair N. Sporck VP Contactor Business Unit | Aug 4, 2026 | Sale | −699 | $100.70 | $70.39K | 24,848 |
| Alistair N. Sporck VP Contactor Business Unit | Aug 4, 2026 | Sale | −1,301 | $101.10 | $131.53K | 23,547 |
| Howard T. Slayen – | Aug 4, 2026 | Sale | −20,000 | $108.30 | $2.17M | 146,367 |
| Laura Oliphant – | Aug 4, 2026 | Gift | −500 | – | – | 17,817 |
| Alberto Salamone EVP, PPBI BUSINESS | Aug 3, 2026 | Tax withholding | −204 | $79.98 | $16.32K | 51,634 |
| Howard T. Slayen – | Jul 30, 2026 | Gift | −5,000 | – | – | 166,367 |
| Gayn Erickson President and CEO, Director | Jul 27, 2026 | Tax withholding | −1,057 | $77.48 | $81.90K | 197,521 |
| Alistair N. Sporck VP Contactor Business Unit | Jul 27, 2026 | Tax withholding | −133 | $77.48 | $10.30K | 25,547 |
| Donald P. Richmond Ii CTO | Jul 27, 2026 | Tax withholding | −102 | $77.48 | $7.90K | 186,567 |
| Vernon Rogers Exec VP of Sales & Mktg. | Jul 27, 2026 | Tax withholding | −198 | $77.48 | $15.34K | 192,226 |
| Adil Engineer Chief Operating Officer | Jul 27, 2026 | Tax withholding | −142 | $77.48 | $11.00K | 46,977 |
| Geoffrey Gates Scott – | Jul 21, 2026 | Gift | −2,874 | – | – | 51,648 |
| Alistair N. Sporck VP Contactor Business Unit | Jul 20, 2026 | Tax withholding | −334 | $81.05 | $27.07K | 25,680 |
| Geoffrey Gates Scott – | Jul 16, 2026 | Gift | −10,000 | – | – | 30,686 |
| Geoffrey Gates Scott – | Jul 16, 2026 | Sale | −20,000 | $82.13 | $1.64M | 30,000 |
| Gayn Erickson President and CEO, Director | Jul 14, 2026 | Tax withholding | −3,447 | $72.01 | $248.22K | 198,578 |
| Donald P. Richmond Ii CTO | Jul 14, 2026 | Tax withholding | −328 | $72.01 | $23.62K | 186,669 |
| Vernon Rogers Exec VP of Sales & Mktg. | Jul 14, 2026 | Option exercise | +3,538 | $1.64 | $5.80K | 192,997 |
| Vernon Rogers Exec VP of Sales & Mktg. | Jul 14, 2026 | Tax withholding | −573 | $72.01 | $41.26K | 192,424 |
| Vernon Rogers Exec VP of Sales & Mktg. | Jul 13, 2026 | Tax withholding | −588 | $72.60 | $42.69K | 189,459 |
| Vernon Rogers Exec VP of Sales & Mktg. | Jul 13, 2026 | Option exercise | +15,262 | $1.64 | $25.03K | 190,047 |
| Vernon Rogers Exec VP of Sales & Mktg. | Jul 13, 2026 | Option exercise | +21,200 | $1.64 | $34.77K | 174,785 |
| Donald P. Richmond Ii CTO | Jul 13, 2026 | Tax withholding | −423 | $72.60 | $30.71K | 186,997 |
| Adil Engineer Chief Operating Officer | Jul 13, 2026 | Tax withholding | −387 | $72.60 | $28.10K | 47,119 |
| Gayn Erickson President and CEO, Director | Jul 13, 2026 | Tax withholding | −4,404 | $72.60 | $319.73K | 202,025 |
| Chris Siu CFO | Jul 13, 2026 | Tax withholding | −988 | $72.60 | $71.73K | 77,824 |
| Alistair N. Sporck VP Contactor Business Unit | Jul 13, 2026 | Tax withholding | −209 | $72.60 | $15.17K | 26,014 |
| Donald P. Richmond Ii CTO | Jul 2, 2026 | Tax withholding | −311 | $69.96 | $21.76K | 187,420 |
| Alistair N. Sporck VP Contactor Business Unit | Jul 2, 2026 | Tax withholding | −259 | $69.96 | $18.12K | 26,223 |
| Alberto Salamone EVP, PPBI BUSINESS | Jul 2, 2026 | Tax withholding | −556 | $69.96 | $38.90K | 51,838 |
| Adil Engineer Chief Operating Officer | Jul 2, 2026 | Tax withholding | −437 | $69.96 | $30.57K | 47,506 |
| Vernon Rogers Exec VP of Sales & Mktg. | Jul 2, 2026 | Tax withholding | −337 | $69.96 | $23.58K | 153,585 |
| Gayn Erickson President and CEO, Director | Jul 2, 2026 | Tax withholding | −3,091 | $69.96 | $216.25K | 206,429 |
| Chris Siu CFO | Jul 2, 2026 | Tax withholding | −1,139 | $69.96 | $79.68K | 78,812 |
| Donald P. Richmond Ii CTO | Jul 1, 2026 | Award | +6,165 | – | – | 187,575 |
| Donald P. Richmond Ii CTO | Jul 1, 2026 | Tax withholding | −2,213 | $84.43 | $186.84K | 187,731 |
| Donald P. Richmond Ii CTO | Jul 1, 2026 | Award | +2,369 | – | – | 189,944 |
| Alistair N. Sporck VP Contactor Business Unit | Jul 1, 2026 | Tax withholding | −2,213 | $84.43 | $186.84K | 26,482 |
| Alistair N. Sporck VP Contactor Business Unit | Jul 1, 2026 | Award | +2,369 | – | – | 28,695 |
| Alistair N. Sporck VP Contactor Business Unit | Jul 1, 2026 | Award | +6,165 | – | – | 26,326 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Vernon Rogers Officer | Aug 17, 2026 | 3,994 | $574.22K | Aug 17, 2026 | Restricted Stock Vesting |
| Howard T. Slayen Director | Aug 14, 2026 | 5,700 | $753.91K | Aug 14, 2026 | Open Market Purchase |
| Rhea J. Posedel Director | Aug 14, 2026 | 5,973 | $836.22K | Aug 14, 2026 | compensation |
| Vernon Rogers Officer | Aug 14, 2026 | 2,000 | $273.00K | Aug 14, 2026 | Restricted Stock Vesting |
| Alberto Salamone Officer | Aug 13, 2026 | 9,672 | $1.24M | Aug 13, 2026 | Merger |
| Rhea J. Posedel Director | Aug 12, 2026 | 8,413 | $1.09M | Aug 12, 2026 | compensation |
| Geoffrey Gates Scott Director | Aug 12, 2026 | 20,000 | $2.63M | Aug 12, 2026 | Private Placement |
| Laura Oliphant Director | Aug 12, 2026 | 1,717 | $228.36K | Aug 12, 2026 | Restricted Stock Vesting |
| Gayn Erickson Officer, Director | Aug 12, 2026 | 40,000 | $5.23M | Aug 12, 2026 | Restricted Stock Vesting |
| Adil Engineer Officer | Aug 12, 2026 | 15,000 | $1.97M | Aug 12, 2026 | Stock Option Exercise |
| Alistair N. Sporck Officer | Aug 10, 2026 | 1,000 | $108.49K | Aug 10, 2026 | Restricted Stock Vesting |
| Howard T. Slayen Director | Aug 4, 2026 | 20,000 | $2.18M | Aug 4, 2026 | Open market purchase |
| Alistair N. Sporck Officer | Aug 4, 2026 | 2,000 | $201.92K | Aug 4, 2026 | Restricted Stock Vesting |
| Geoffrey Gates Scott Director | Jul 16, 2026 | 20,000 | $1.64M | Jul 16, 2026 | Private Placement |
| Chris Siu Officer | May 14, 2026 | 2,070 | $213.73K | May 14, 2026 | Restricted Stock Units |