AEHR
Aehr Test Systems
51.50$
-6.2%
vs. previous close
Closing price · As of: Nov 2, 2026
Ownership
Ownership Structure
Who owns Aehr Test Systems (AEHR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 95.6% of the shares are freely tradable; institutional investors hold 73.3%.
Institutional ownership
?Share of the stock held by institutional investors (funds, banks, insurers) according to regulatory filings.
73.3%
Insiders
?Share of the stock held by the executives, founders and major shareholders of the company itself.
4.6%
Float
?Share of stock freely tradable on the market — not locked up in the hands of founders, insiders, or major shareholders.
95.6%
Short % of float
?Shares sold short as a percentage of the freely tradable float — high values signal many bets on falling prices.
16.8%
Shares Outstanding
?Total number of shares issued. Price times share count gives market cap.
33Mio.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 8.68 | 2,659,542 | +16.3 | 06/30/2026 |
| Vanguard Capital Management, LLC | 4.31 | 1,320,350 | +3.0 | 06/30/2026 |
| D. E. Shaw & Co LP | 3.84 | 1,177,421 | +244.6 | 06/30/2026 |
| Two Sigma Investments LLC | 3.80 | 1,164,614 | +443.3 | 06/30/2026 |
| FMR Inc | 3.29 | 1,006,830 | -53.0 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 3.16 | 966,659 | +5.3 | 06/30/2026 |
| Geode Capital Management, LLC | 2.86 | 875,505 | +20.6 | 06/30/2026 |
| The Goldman Sachs Group Inc | 2.65 | 810,036 | -35.8 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 3.21 | 983,597 | +3.2 | 09/30/2026 |
| iShares Russell 2000 ETF | 2.69 | 823,277 | -1.1 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Posedel Rhea J | Director | 447,145 | 23,027,968 $ | Aug 14, 2026 | both |
| Erickson Gayn | President and CEO | 349,033 | 17,975,200 $ | Oct 1, 2026 | both |
| Rogers Vernon | Exec VP of Sales & Mktg. | 186,682 | 9,614,123 $ | Oct 27, 2026 | direct |
| Richmond Donald P. Ii | CTO | 186,583 | 9,609,025 $ | Oct 27, 2026 | direct |
| Slayen Howard T | Director | 140,667 | 7,244,351 $ | Aug 14, 2026 | direct |
| Scott Geoffrey Gates | Director | 85,603 | 4,408,555 $ | Jul 21, 2026 | both |
| Siu Chris | CFO | 81,778 | 4,211,567 $ | Oct 1, 2026 | both |
| Engineer Adil | Chief Operating Officer | 45,740 | 2,355,610 $ | Oct 27, 2026 | direct |
| Salamone Alberto | EVP, PPBI BUSINESS | 42,873 | 2,207,960 $ | Oct 2, 2026 | direct |
| Sporck Alistair N | VP Contactor Business Unit | 28,063 | 1,445,245 $ | Oct 1, 2026 | both |
| Oliphant Laura | Director | 16,100 | 829,150 $ | Aug 12, 2026 | direct |
| Wimmers Didier | Executive VP of R&D | 13,636 | 702,254 $ | Oct 1, 2026 | direct |
| Vijayrao Narsing Krishna | Director | 3,169 | 163,204 $ | Oct 28, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 28, 2026 | Vijayrao Narsing Krishna | Director | Other | 2,169 | 0.00 | – |
| Oct 27, 2026 | Sporck Alistair N | VP Contactor Business Unit | Other | 188 | 63.95 | 12,023 |
| Oct 27, 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 197 | 63.95 | 12,598 |
| Oct 27, 2026 | Richmond Donald P. Ii | CTO | Other | 145 | 63.95 | 9,273 |
| Oct 27, 2026 | Erickson Gayn | President and CEO | Other | 851 | 63.95 | 54,421 |
| Oct 27, 2026 | Engineer Adil | Chief Operating Officer | Other | 202 | 63.95 | 12,918 |
| Oct 20, 2026 | Posedel Rhea J | Director | Other | 18,000 | 1.77 | 31,860 |
| Oct 12, 2026 | Siu Chris | CFO | Other | 987 | 84.64 | 83,540 |
| Oct 12, 2026 | Sporck Alistair N | VP Contactor Business Unit | Other | 295 | 84.64 | 24,969 |
| Oct 12, 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 426 | 84.64 | 36,057 |
| Oct 12, 2026 | Richmond Donald P. Ii | CTO | Other | 388 | 84.64 | 32,840 |
| Oct 12, 2026 | Engineer Adil | Chief Operating Officer | Other | 547 | 84.64 | 46,298 |
| Oct 12, 2026 | Erickson Gayn | President and CEO | Other | 2,675 | 84.64 | 226,412 |
| Oct 2, 2026 | Erickson Gayn | President and CEO | Other | 3,239 | 107.21 | 347,253 |
| Oct 2, 2026 | Engineer Adil | Chief Operating Officer | Other | 620 | 107.21 | 66,470 |
| Oct 2, 2026 | Richmond Donald P. Ii | CTO | Other | 439 | 107.21 | 47,065 |
| Oct 2, 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 476 | 107.21 | 51,032 |
| Oct 2, 2026 | Salamone Alberto | EVP, PPBI BUSINESS | Other | 556 | 107.21 | 59,609 |
| Oct 2, 2026 | Siu Chris | CFO | Other | 1,164 | 107.21 | 124,792 |
| Oct 2, 2026 | Sporck Alistair N | VP Contactor Business Unit | Other | 345 | 107.21 | 36,987 |
| Oct 1, 2026 | Erickson Gayn | President and CEO | Other | 1,053 | 6.67 | 7,026 |
| Oct 1, 2026 | Erickson Gayn | President and CEO | Other | 499 | 101.60 | 50,698 |
| Oct 1, 2026 | Sporck Alistair N | VP Contactor Business Unit | Other | 1,221 | 6.67 | 8,147 |
| Oct 1, 2026 | Sporck Alistair N | VP Contactor Business Unit | Other | 54 | 101.60 | 5,486 |
| Oct 1, 2026 | Wimmers Didier | Executive VP of R&D | Other | 54 | 101.60 | 5,486 |
| Oct 1, 2026 | Wimmers Didier | Executive VP of R&D | Other | 1,311 | 6.67 | 8,748 |
| Oct 1, 2026 | Salamone Alberto | EVP, PPBI BUSINESS | Other | 45 | 101.60 | 4,572 |
| Oct 1, 2026 | Salamone Alberto | EVP, PPBI BUSINESS | Other | 1,512 | 6.67 | 10,089 |
| Oct 1, 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 77 | 101.60 | 7,823 |
| Oct 1, 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 1,626 | 6.67 | 10,849 |
| Oct 1, 2026 | Richmond Donald P. Ii | CTO | Other | 76 | 101.60 | 7,722 |
| Oct 1, 2026 | Richmond Donald P. Ii | CTO | Other | 1,064 | 6.67 | 7,100 |
| Oct 1, 2026 | Engineer Adil | Chief Operating Officer | Other | 98 | 101.60 | 9,957 |
| Oct 1, 2026 | Engineer Adil | Chief Operating Officer | Other | 730 | 6.67 | 4,871 |
| Oct 1, 2026 | Siu Chris | CFO | Other | 1,089 | 6.67 | 7,266 |
| Oct 1, 2026 | Siu Chris | CFO | Other | 194 | 101.60 | 19,710 |
| Sep 3, 2026 | Wimmers Didier | Executive VP of R&D | Other | 317 | 76.27 | 24,178 |
| Sep 1, 2026 | Siu Chris | CFO | Other | 496 | 76.59 | 37,989 |
| Aug 17, 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Sell | 3,994 | 143.77 | 574,217 |
| Aug 14, 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Sell | 1,000 | 139.00 | 139,000 |
| Aug 14, 2026 | Engineer Adil | Chief Operating Officer | Other | 500 | 0.00 | – |
| Aug 14, 2026 | Slayen Howard T | Director | Sell | 5,700 | 133.03 | 758,264 |
| Aug 14, 2026 | Posedel Rhea J | Director | Sell | 5,973 | 140.00 | 836,220 |
| Aug 13, 2026 | Salamone Alberto | EVP, PPBI BUSINESS | Sell | 5,472 | 127.50 | 697,688 |
| Aug 13, 2026 | Salamone Alberto | EVP, PPBI BUSINESS | Sell | 4,200 | 128.00 | 537,600 |
| Aug 12, 2026 | Erickson Gayn | President and CEO | Sell | 38,452 | 130.79 | 5,028,968 |
| Aug 12, 2026 | Erickson Gayn | President and CEO | Sell | 1,548 | 132.27 | 204,750 |
| Aug 12, 2026 | Posedel Rhea J | Director | Sell | 8,413 | 130.00 | 1,093,690 |
| Aug 12, 2026 | Scott Geoffrey Gates | Director | Sell | 20,000 | 131.51 | 2,630,120 |
| Aug 12, 2026 | Scott Geoffrey Gates | Director | Other | 6,731 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.