Quick Takeaways
- AEHR - AEHR TEST SYSTEMS has 18 insiders with reported activity on this page.
- Net insider value flow over the last year: -$41,792,762.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 18 Insiders of AEHR TEST SYSTEMS
- Symbol
- AEHR on Nasdaq
- Location
- Fremont, CA
What Changed
- Buy value: ; sell value: $41,792,761.
- Net share flow: -580,530.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$41,792,762.
Buys
$0
Shares: 0
Insiders: 0
Sells
$41,792,762
Shares: 580,530
Insiders: 12
Net
-$41,792,762
Shares: -580,530
Insiders: -12
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 529,989 | $0 | $40,720,353 | -$40,720,353 |
| 3-6 | 0 | 4,546 | $0 | $142,750 | -$142,750 |
| 6-9 | 0 | 15,000 | $0 | $377,459 | -$377,459 |
| 9-12 | 0 | 30,995 | $0 | $552,200 | -$552,200 |
AEHR TEST SYSTEMS executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Rhea J. Posedel | Director | $42,181,725 | -$7,976,236 | -16% | Filing P/S | 22 Apr 2026 |
| Gayn Erickson | President and CEO, Director | $14,178,760 | -$10,786,792 | -43% | Median | 27 Apr 2026 |
| Donald P. Richmond II | Cto | $6,726,682 | -$2,326,660 | -26% | Median | 27 Apr 2026 |
| Slayen Howard T. | Director | $6,545,658 | -$2,279,357 | -26% | Median | 22 Apr 2026 |
| Vernon Rogers | Exec VP of Sales & Mktg. | $5,472,155 | -$2,475,620 | -31% | Median | 27 Apr 2026 |
| Geoffrey Gates Scott | Director | $5,322,833 | -$8,380,900 | -61% | Median | 29 Apr 2026 |
| Siu Chris | Cfo | $2,893,945 | Median | 11 Apr 2026 | ||
| Kenneth B. Spink | VP of Finance and CFO | $1,911,009 | Mixed | 17 Jul 2023 | ||
| Alberto Salamone | Evp, Ppbi Business | $1,773,202 | -$2,807,286 | -61% | Median | 01 May 2026 |
| Adil Engineer | Chief Operating Officer | $1,517,016 | -$1,139,351 | -43% | Median | 27 Apr 2026 |
| David S. Hendrickson | Former CTO | $1,474,716 | Mixed | 17 Jul 2023 | ||
| Laura Oliphant | Director | $1,363,022 | -$994,515 | -42% | Filing P/S | 16 Apr 2026 |
| Fariba Danesh | Director | $1,086,006 | -$1,629,730 | -60% | Filing P/S | 16 Apr 2026 |
| Alistair N. Sporck | VP Contactor Business Unit | $939,532 | -$610,586 | -39% | Median | 27 Apr 2026 |
| Didier Wimmers | Executive VP of R&D | $767,702 | -$385,731 | -33% | Filing P/S | 13 Apr 2026 |
| K. Ray Chaudhuri | Executive VP of R&D | $448,557 | Mixed | 27 Oct 2024 | ||
| Michael A. Brannan | Former Vp Of Operations | Mixed | 26 Jan 2022 | |||
| Mario M. Rosati | Director | Mixed | 06 Jun 2023 |
Top shareholders of AEHR TEST SYSTEMS (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| FMR LLC |
13D/G
13F
|
Company |
9%
|
2,701,254
|
$81,334,754 | +$36,317,116 | 30 Sep 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
7.8%
|
2,337,433
|
$47,192,772 | — | 31 Dec 2025 | |
| BlackRock, Inc. |
13F
|
Company |
7.1%
|
2,127,105
|
$42,946,249 | — | 31 Dec 2025 | |
| Rhea J. Posedel |
3/4/5
|
Director |
1.5%
|
441,636
|
$42,181,725 | -$7,976,236 | 22 Apr 2026 | |
| BAILLIE GIFFORD & CO |
13D/G
13F
|
Company |
4.3%
|
1,290,734
|
$34,010,841 | -$6,322,472 | 31 Dec 2025 | |
| AWM Investment Company, Inc. |
13F
13D/G
|
Company |
5.3%
from 13D/G
|
1,536,771
|
$31,027,406 | — | 31 Dec 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
2.8%
|
830,664
|
$16,771,106 | — | 31 Dec 2025 | |
| Gayn Erickson |
3/4/5
|
President and CEO, Director |
1.3%
|
382,383
|
$14,178,760 | -$10,786,792 | 27 Apr 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.3%
|
685,694
|
$13,846,125 | — | 31 Dec 2025 | |
| Halter Ferguson Financial Inc. |
13F
|
Company |
2.1%
|
642,129
|
$12,964,587 | — | 31 Dec 2025 | |
| STATE STREET CORP |
13F
|
Company |
2.1%
|
624,085
|
$12,600,276 | — | 31 Dec 2025 | |
| NEXT CENTURY GROWTH INVESTORS LLC |
13F
|
Company |
1.8%
|
552,506
|
$11,155,096 | — | 31 Dec 2025 | |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13F
|
Company |
1.7%
|
495,672
|
$10,007,618 | — | 31 Dec 2025 | |
| RICE HALL JAMES & ASSOCIATES, LLC |
13F
|
Company |
1.5%
|
453,568
|
$9,157,538 | — | 31 Dec 2025 | |
| KENNEDY CAPITAL MANAGEMENT LLC |
13F
|
Company |
1.2%
|
360,234
|
$7,273,124 | — | 31 Dec 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
1.2%
|
355,574
|
$7,179,039 | — | 31 Dec 2025 | |
| Donald P. Richmond II |
3/4/5
|
CTO |
0.6%
|
181,410
|
$6,726,682 | -$2,326,660 | 27 Apr 2026 | |
| Slayen Howard T. |
3/4/5
|
Director |
0.59%
|
176,528
|
$6,545,658 | -$2,279,357 | 22 Apr 2026 | |
| GILDER GAGNON HOWE & CO LLC |
13F
|
Company |
1.1%
|
317,948
|
$6,419,370 | — | 31 Dec 2025 | |
| SILVERCREST ASSET MANAGEMENT GROUP LLC |
13F
|
Company |
1%
|
308,387
|
$6,226,334 | — | 31 Dec 2025 | |
| Sculptor Capital LP |
13F
|
Company |
1%
|
300,000
|
$6,057,000 | — | 31 Dec 2025 | |
| D. E. Shaw & Co., Inc. |
13F
|
Company |
0.97%
|
290,291
|
$5,860,975 | — | 31 Dec 2025 | |
| Vernon Rogers |
3/4/5
|
Exec VP of Sales & Mktg. |
0.49%
|
147,577
|
$5,472,155 | -$2,475,620 | 27 Apr 2026 | |
| Geoffrey Gates Scott |
3/4/5
|
Director |
0.48%
|
143,550
|
$5,322,833 | -$8,380,900 | 29 Apr 2026 | |
| MORGAN STANLEY |
13F
|
Company |
0.82%
|
244,783
|
$4,942,169 | — | 31 Dec 2025 | |
| UBS Group AG |
13F
|
Company |
0.81%
|
243,129
|
$4,908,774 | — | 31 Dec 2025 | |
| JANE STREET GROUP, LLC |
13F
|
Company |
0.8%
|
240,438
|
$4,854,443 | — | 31 Dec 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
0.8%
|
239,872
|
$4,843,016 | — | 31 Dec 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.79%
|
238,409
|
$4,813,478 | — | 31 Dec 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.74%
|
220,779
|
$4,457,528 | — | 31 Dec 2025 | |
| Pier Capital, LLC |
13F
|
Company |
0.7%
|
211,619
|
$4,272,588 | — | 31 Dec 2025 | |
| NATIONAL BANK OF CANADA /FI/ |
13F
|
Company |
0.69%
|
206,011
|
$4,159,362 | — | 31 Dec 2025 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.6%
|
181,500
|
$3,664,485 | — | 31 Dec 2025 | |
| BARD ASSOCIATES INC |
13F
|
Company |
0.6%
|
179,793
|
$3,630,021 | — | 31 Dec 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.59%
|
176,042
|
$3,554,288 | — | 31 Dec 2025 | |
| Siu Chris |
3/4/5
|
CFO |
0.26%
|
78,046
|
$2,893,945 | — | 11 Apr 2026 | |
| GRATIA CAPITAL, LLC |
13F
|
Company |
0.46%
|
137,560
|
$2,777,336 | — | 31 Dec 2025 | |
| Penbrook Management LLC |
13F
|
Company |
0.38%
|
114,900
|
$2,319,831 | — | 31 Dec 2025 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP |
13F
|
Company |
0.37%
|
111,259
|
$2,246,319 | — | 31 Dec 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
0.36%
|
109,067
|
$2,202,174 | — | 31 Dec 2025 | |
| Squarepoint Ops LLC |
13F
|
Company |
0.33%
|
100,199
|
$2,023,018 | — | 31 Dec 2025 | |
| OSAIC HOLDINGS, INC. |
13F
|
Company |
0.33%
|
98,803
|
$1,994,812 | — | 31 Dec 2025 | |
| Kenneth B. Spink |
3/4/5
|
VP of Finance and CFO |
—
class O/S missing
|
109,866
|
$1,911,009 | — | 17 Jul 2023 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.3%
|
89,755
|
$1,812,161 | — | 31 Dec 2025 | |
| Alberto Salamone |
3/4/5
|
EVP, PPBI BUSINESS |
0.16%
|
47,821
|
$1,773,202 | -$2,807,286 | 01 May 2026 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.28%
|
85,001
|
$1,716,170 | — | 31 Dec 2025 | |
| Adil Engineer |
3/4/5
|
Chief Operating Officer |
—
mixed-class rows
|
79,742
mixed-class rows
|
$1,517,016 | -$1,139,351 | 27 Apr 2026 | |
| KLCM Advisors, Inc. |
13F
|
Company |
0.25%
|
75,000
|
$1,514,250 | — | 31 Dec 2025 | |
| David S. Hendrickson |
3/4/5
|
Former CTO |
—
class O/S missing
|
84,783
|
$1,474,716 | — | 17 Jul 2023 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.24%
|
70,662
|
$1,426,666 | — | 31 Dec 2025 |
Recent Insider Transactions by Companies or Individuals for AEHR TEST SYSTEMS
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Alberto Salamone | AEHR | Common Stock | Tax liability | -0.42% | -204 | 47,821 | 01 May 2026 | Direct | ||
| Geoffrey Gates Scott | AEHR | Common Stock | Tax liability | -19.7% | -10,000 | 40,686 | 29 Apr 2026 | By Trust | ||
| Alistair N. Sporck | AEHR | Common Stock | Tax liability | -0.66% | -133 | 20,161 | 27 Apr 2026 | Direct | ||
| Vernon Rogers | AEHR | Common Stock | Tax liability | -0.09% | -139 | 147,577 | 27 Apr 2026 | Direct | ||
| Donald P. Richmond II | AEHR | Common Stock | Tax liability | -0.06% | -102 | 181,410 | 27 Apr 2026 | Direct | ||
| Gayn Erickson | AEHR | Common Stock | Tax liability | -0.46% | -851 | 184,660 | 27 Apr 2026 | Direct | ||
| Adil Engineer | AEHR | Common Stock | Tax liability | -0.35% | -143 | 40,912 | 27 Apr 2026 | Direct | ||
| Rhea J. Posedel | AEHR | Common Stock | Sale | -0.15% | $57,380 | $95.00 | -604 | 396,375 | 22 Apr 2026 | By Trust |
| Rhea J. Posedel | AEHR | Common Stock | Sale | -27.4% | $1,711,500 | $100.00 | -17,115 | 45,261 | 22 Apr 2026 | Direct |
| Alistair N. Sporck | AEHR | Common Stock | Sale | -27.9% | $186,990 | $93.50 | -2,000 | 5,177 | 22 Apr 2026 | By Trust |
| Slayen Howard T. | AEHR | Common Stock | Gift | -1.01% | -1,800 | 176,528 | 22 Apr 2026 | Direct | ||
| Alberto Salamone | AEHR | Common Stock | Sale | -23.8% | $1,418,400 | $94.56 | -15,000 | 48,025 | 21 Apr 2026 | Direct |
| Geoffrey Gates Scott | AEHR | Common Stock | Sale | -50% | $4,750,000 | $95.00 | -50,000 | 50,000 | 21 Apr 2026 | By Spouse |
| Geoffrey Gates Scott | AEHR | Common Stock | Sale | -16.5% | $910,000 | $91.00 | -10,000 | 50,686 | 21 Apr 2026 | By Trust |
| Rhea J. Posedel | AEHR | Common Stock | Sale | -12.4% | $843,757 | $96.02 | -8,787 | 62,376 | 21 Apr 2026 | Direct |
| Vernon Rogers | AEHR | Common Stock | Sale | -4.07% | $610,270 | $94.09 | -6,486 | 152,716 | 21 Apr 2026 | Direct |
| Alberto Salamone | AEHR | Common Stock | Sale | -19.2% | $1,343,550 | $89.57 | -15,000 | 63,025 | 20 Apr 2026 | Direct |
| Vernon Rogers | AEHR | Common Stock | Sale | -3.27% | $450,000 | $90.00 | -5,000 | 147,716 | 20 Apr 2026 | Direct |
| Vernon Rogers | AEHR | Common Stock | Sale | -1.5% | $218,790 | $90.00 | -2,431 | 159,202 | 20 Apr 2026 | Direct |
| Rhea J. Posedel | AEHR | Common Stock | Sale | -1.85% | $660,675 | $88.09 | -7,500 | 396,979 | 20 Apr 2026 | By Trust |
| Alistair N. Sporck | AEHR | Common Stock | Tax liability | -1.65% | -341 | 20,294 | 18 Apr 2026 | Direct | ||
| Rhea J. Posedel | AEHR | Common Stock | Sale | -1.82% | $615,000 | $82.00 | -7,500 | 404,479 | 17 Apr 2026 | By Trust |
| Slayen Howard T. | AEHR | Common Stock | Sale | -12.3% | $2,125,000 | $85.00 | -25,000 | 178,328 | 17 Apr 2026 | Direct |
| Fariba Danesh | AEHR | Common Stock | Sale | -37.8% | $661,040 | $82.63 | -8,000 | 13,143 | 16 Apr 2026 | Direct |
| Fariba Danesh | AEHR | Common Stock | Options Exercise | 60.9% | 8,000 | 21,143 | 16 Apr 2026 | Direct | ||
| Fariba Danesh | AEHR | Non-Qualified Option (right to buy) | Options Exercise | -100% | -8,000 | 0 | 16 Apr 2026 | Direct | ||
| Laura Oliphant | AEHR | Common Stock | Sale | -9.31% | $139,923 | $81.54 | -1,716 | 16,716 | 16 Apr 2026 | Direct |
| Vernon Rogers | AEHR | Common Stock | Sale | -3% | $434,400 | $86.88 | -5,000 | 161,633 | 16 Apr 2026 | Direct |
| Alistair N. Sporck | AEHR | Common Stock | Sale | -8.84% | $163,760 | $81.88 | -2,000 | 20,635 | 16 Apr 2026 | Direct |
| Laura Oliphant | AEHR | Common Stock | Sale | -100% | $399,268 | $85.59 | -4,665 | 0 | 16 Apr 2026 | By Trust |
| Rhea J. Posedel | AEHR | Common Stock | Sale | -3.51% | $1,210,800 | $80.72 | -15,000 | 411,979 | 16 Apr 2026 | By Trust |
| Didier Wimmers | AEHR | Common Stock | Sale | -15.1% | $136,845 | $72.02 | -1,900 | 10,659 | 15 Apr 2026 | Direct |
| Donald P. Richmond II | AEHR | Common Stock | Sale | -8.57% | $1,244,804 | $73.18 | -17,011 | 181,512 | 14 Apr 2026 | Direct |
| Gayn Erickson | AEHR | Common Stock | Tax liability | -1.48% | -2,784 | 185,511 | 14 Apr 2026 | Direct | ||
| Vernon Rogers | AEHR | Common Stock | Tax liability | -0.24% | -404 | 166,633 | 14 Apr 2026 | Direct | ||
| Donald P. Richmond II | AEHR | Common Stock | Tax liability | -0.15% | -299 | 198,523 | 14 Apr 2026 | Direct | ||
| Didier Wimmers | AEHR | Common Stock | Sale | -21.8% | $248,886 | $71.11 | -3,500 | 12,559 | 13 Apr 2026 | Direct |
| Fariba Danesh | AEHR | Common Stock | Sale | -34.8% | $500,431 | $71.49 | -7,000 | 13,143 | 13 Apr 2026 | Direct |
| Fariba Danesh | AEHR | Common Stock | Options Exercise | 53.3% | 7,000 | 20,143 | 13 Apr 2026 | Direct | ||
| Fariba Danesh | AEHR | Non-Qualified Option (right to buy) | Options Exercise | -46.7% | -7,000 | 8,000 | 13 Apr 2026 | Direct | ||
| Siu Chris | AEHR | Common Stock | Tax liability | -0.98% | -697 | 70,740 | 11 Apr 2026 | Direct | ||
| Vernon Rogers | AEHR | Common Stock | Tax liability | -0.3% | -503 | 167,037 | 11 Apr 2026 | Direct | ||
| Donald P. Richmond II | AEHR | Common Stock | Tax liability | -0.21% | -423 | 198,822 | 11 Apr 2026 | Direct | ||
| Gayn Erickson | AEHR | Common Stock | Tax liability | -1.93% | -3,704 | 188,295 | 11 Apr 2026 | Direct | ||
| Alistair N. Sporck | AEHR | Common Stock | Tax liability | -0.96% | -220 | 22,635 | 11 Apr 2026 | Direct | ||
| Adil Engineer | AEHR | Common Stock | Tax liability | -0.93% | -386 | 41,055 | 11 Apr 2026 | Direct | ||
| Gayn Erickson | AEHR | Common Stock | Sale | -32.7% | $6,778,519 | $70.58 | -96,036 | 197,723 | 10 Apr 2026 | By Trust |
| Gayn Erickson | AEHR | Common Stock | Sale | -22.8% | $4,008,273 | $70.58 | -56,788 | 191,999 | 10 Apr 2026 | Direct |
| Alistair N. Sporck | AEHR | Common Stock | Sale | -8.05% | $134,730 | $67.36 | -2,000 | 22,855 | 10 Apr 2026 | Direct |
| Fariba Danesh | AEHR | Common Stock | Sale | -21% | $245,158 | $70.04 | -3,500 | 13,143 | 10 Apr 2026 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.