Aehr Test Systems (AEHR)
Who owns Aehr Test Systems (AEHR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 90.3% of the shares are freely tradable; institutional investors hold 73.3%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard Group Inc | 7.43 | 2,337,433 | +2.2 | 12/31/2025 |
| BlackRock Inc | 7.27 | 2,286,899 | +7.5 | 03/31/2026 |
| FMR Inc | 6.81 | 2,142,639 | -14.6 | 03/31/2026 |
| Awm Investment Company Inc | 5.07 | 1,593,971 | +3.7 | 03/31/2026 |
| T. Rowe Price Associates, Inc. | 4.29 | 1,349,351 | +3,824.4 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.08 | 1,281,857 | +0.0 | 03/31/2026 |
| The Goldman Sachs Group Inc | 4.01 | 1,262,043 | +616.9 | 03/31/2026 |
| Baillie Gifford & Co Limited. | 3.18 | 1,001,018 | -22.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Fidelity Small Cap Growth | 4.52 | 1,422,081 | +0.0 | 03/31/2026 |
| Vanguard Total Stock Mkt Idx Inv | 2.96 | 930,536 | +0.2 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 30. Jul 2026 | Slayen Howard T | Director | Other | 5,000 | 0.00 | – |
| 27. Jul 2026 | Erickson Gayn | President and CEO | Other | 1,057 | 77.48 | 81,896 |
| 27. Jul 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 198 | 77.48 | 15,341 |
| 27. Jul 2026 | Sporck Alistair N | VP Contactor Business Unit | Other | 133 | 77.48 | 10,305 |
| 27. Jul 2026 | Richmond Donald P. Ii | CTO | Other | 102 | 77.48 | 7,903 |
| 27. Jul 2026 | Engineer Adil | Chief Operating Officer | Other | 142 | 77.48 | 11,002 |
| 21. Jul 2026 | Scott Geoffrey Gates | Director | Other | 2,874 | 0.00 | – |
| 20. Jul 2026 | Sporck Alistair N | VP Contactor Business Unit | Other | 334 | 81.05 | 27,071 |
| 16. Jul 2026 | Scott Geoffrey Gates | Director | Sell | 20,000 | 82.13 | 1,642,650 |
| 16. Jul 2026 | Scott Geoffrey Gates | Director | Other | 10,000 | 0.00 | – |
| 14. Jul 2026 | Erickson Gayn | President and CEO | Other | 3,447 | 72.01 | 248,218 |
| 14. Jul 2026 | Richmond Donald P. Ii | CTO | Other | 328 | 72.01 | 23,619 |
| 14. Jul 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 573 | 72.01 | 41,262 |
| 14. Jul 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 3,538 | 1.64 | 5,785 |
| 13. Jul 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 588 | 72.60 | 42,689 |
| 13. Jul 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 15,262 | 1.64 | 24,953 |
| 13. Jul 2026 | Rogers Vernon | Exec VP of Sales & Mktg. | Other | 21,200 | 1.64 | 34,662 |
| 13. Jul 2026 | Sporck Alistair N | VP Contactor Business Unit | Other | 209 | 72.60 | 15,173 |
| 13. Jul 2026 | Siu Chris | CFO | Other | 988 | 72.60 | 71,729 |
| 13. Jul 2026 | Richmond Donald P. Ii | CTO | Other | 423 | 72.60 | 30,710 |
| 13. Jul 2026 | Erickson Gayn | President and CEO | Other | 4,404 | 72.60 | 319,730 |
| 13. Jul 2026 | Engineer Adil | Chief Operating Officer | Other | 387 | 72.60 | 28,096 |
| 22. Apr 2026 | Alistair N Sporck | VP | Sell | 2,000 | 93.50 | 187,000 |
| 22. Apr 2026 | Rhea J Posedel | Director | Sell | 17,115 | 100.00 | 1,711,500 |
| 22. Apr 2026 | Rhea J Posedel | Director | Sell | 604 | 95.00 | 57,380 |
| 21. Apr 2026 | Rhea J Posedel | Director | Sell | 8,787 | 96.02 | 843,728 |
| 20. Apr 2026 | Alberto Salamone | EVP | Sell | 15,000 | 89.57 | 1,343,550 |
| 20. Apr 2026 | Rhea J Posedel | Director | Sell | 7,500 | 88.09 | 660,675 |
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: July 31, 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.