United States Semiconductors & Semiconductor Equipment

Aehr Test Systems (AEHR)

Track

Over the last 90 days, Aehr Test Systems has seen significant insider selling, with a net value of approximately -$40 million. Executives contributed over -$20 million to this net sell-off. While the stock has seen a 34.1% increase in the past 90 days, recent transactions show a clear trend of insiders divesting shares, with no reported insider purchases.
Ticker: AEHR Exchange: NAS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Top insiders
Trades
Siu Chris
Officer
1 sale — total 213,728 USD
Proposed sale 14 May 2026
Value US$4,064,933.61 | Price 185.92 | Shares 40,042
Proposed sale 13 May 2026
Value US$925,528.85 | Price 407.85 | Shares 28,936
Sale 22 Apr 2026
Value US$57,380.00 | Price 95.00 | Shares 604
Sale 22 Apr 2026
Value US$1,711,500.00 | Price 100.00 | Shares 17,115
Proposed sale 22 Apr 2026
Value US$1,768,880.00 | Price 99.83 | Shares 17,719
Sale 22 Apr 2026
Value US$186,990.00 | Price 93.50 | Shares 2,000
Proposed sale 22 Apr 2026
Value US$190,120.00 | Price 95.06 | Shares 2,000
Proposed sale 22 Apr 2026
Value US$4,749,900.20 | Price 95.00 | Shares 50,000
Sale 21 Apr 2026
Value US$1,418,400.00 | Price 94.56 | Shares 15,000
Proposed sale 21 Apr 2026
Value US$1,418,368.88 | Price 94.56 | Shares 15,000
Sale 21 Apr 2026
Value US$4,750,000.00 | Price 95.00 | Shares 50,000
Sale 21 Apr 2026
Value US$910,000.00 | Price 91.00 | Shares 10,000
Sale 21 Apr 2026
Value US$843,756.74 | Price 96.02 | Shares 8,787
Proposed sale 21 Apr 2026
Value US$843,755.85 | Price 96.02 | Shares 8,787
Sale 21 Apr 2026
Value US$610,270.33 | Price 94.09 | Shares 6,486
Proposed sale 21 Apr 2026
Value US$610,270.33 | Price 94.09 | Shares 6,486
Proposed sale 21 Apr 2026
Value US$910,000.00 | Price 91.00 | Shares 10,000
Sale 20 Apr 2026
Value US$1,343,550.00 | Price 89.57 | Shares 15,000
Proposed sale 20 Apr 2026
Value US$1,343,589.55 | Price 89.57 | Shares 15,000
Sale 20 Apr 2026
Value US$450,000.00 | Price 90.00 | Shares 5,000
Sale 20 Apr 2026
Value US$218,790.00 | Price 90.00 | Shares 2,431
Proposed sale 20 Apr 2026
Value US$218,790.00 | Price 90.00 | Shares 2,431
Proposed sale 20 Apr 2026
Value US$450,000.00 | Price 90.00 | Shares 5,000
Sale 20 Apr 2026
Value US$660,675.00 | Price 88.09 | Shares 7,500
Proposed sale 20 Apr 2026
Value US$660,675.00 | Price 88.09 | Shares 7,500
Sale 17 Apr 2026
Value US$615,000.00 | Price 82.00 | Shares 7,500
Proposed sale 17 Apr 2026
Value US$615,000.00 | Price 82.00 | Shares 7,500
Sale 17 Apr 2026
Value US$2,125,000.00 | Price 85.00 | Shares 25,000
Proposed sale 17 Apr 2026
Value US$81,000.00 | Price 81.00 | Shares 1,000
Sale 16 Apr 2026
Value US$661,040.00 | Price 82.63 | Shares 8,000
Proposed sale 16 Apr 2026
Value US$661,040.00 | Price 82.63 | Shares 8,000
Sale 16 Apr 2026
Value US$139,922.64 | Price 81.54 | Shares 1,716
Sale 16 Apr 2026
Value US$399,267.55 | Price 85.59 | Shares 4,665
Proposed sale 16 Apr 2026
Value US$139,917.53 | Price 81.54 | Shares 1,716
Sale 16 Apr 2026
Value US$434,400.00 | Price 86.88 | Shares 5,000
Proposed sale 16 Apr 2026
Value US$1,210,743.00 | Price 80.72 | Shares 15,000
Proposed sale 16 Apr 2026
Value US$434,400.50 | Price 86.88 | Shares 5,000
Sale 16 Apr 2026
Value US$163,760.00 | Price 81.88 | Shares 2,000
Proposed sale 16 Apr 2026
Value US$163,760.00 | Price 81.88 | Shares 2,000
Sale 16 Apr 2026
Value US$1,210,800.00 | Price 80.72 | Shares 15,000
Proposed sale 16 Apr 2026
Value US$1,210,743.00 | Price 80.72 | Shares 15,000
Sale 15 Apr 2026
Value US$136,845.41 | Price 72.02 | Shares 1,900
Proposed sale 15 Apr 2026
Value US$136,845.44 | Price 72.02 | Shares 1,900
Sale 14 Apr 2026
Value US$1,244,803.74 | Price 73.18 | Shares 17,011
Proposed sale 14 Apr 2026
Value US$2,195,700.00 | Price 73.19 | Shares 30,000
Sale 13 Apr 2026
Value US$248,885.70 | Price 71.11 | Shares 3,500
Proposed sale 13 Apr 2026
Value US$248,880.00 | Price 71.11 | Shares 3,500
Sale 13 Apr 2026
Value US$500,430.70 | Price 71.49 | Shares 7,000
Proposed sale 13 Apr 2026
Value US$500,430.70 | Price 71.49 | Shares 7,000
Sale 10 Apr 2026
Value US$134,730.00 | Price 67.37 | Shares 2,000
Proposed sale 10 Apr 2026
Value US$134,730.00 | Price 67.37 | Shares 2,000
Sale 10 Apr 2026
Value US$6,778,518.59 | Price 70.58 | Shares 96,036
Sale 10 Apr 2026
Value US$4,008,273.08 | Price 70.58 | Shares 56,788
Proposed sale 10 Apr 2026
Value US$4,008,277.12 | Price 70.58 | Shares 56,788
Proposed sale 10 Apr 2026
Value US$6,778,524.16 | Price 70.58 | Shares 96,036
Sale 10 Apr 2026
Value US$245,157.50 | Price 70.05 | Shares 3,500
Proposed sale 10 Apr 2026
Value US$245,157.90 | Price 70.05 | Shares 3,500
Sale 10 Apr 2026
Value US$762,160.00 | Price 70.00 | Shares 10,888
Proposed sale 10 Apr 2026
Value US$762,160.00 | Price 70.00 | Shares 10,888
Sale 9 Apr 2026
Value US$79,524.00 | Price 66.27 | Shares 1,200
Sale 9 Apr 2026
Value US$167,644.32 | Price 66.32 | Shares 2,528
Sale 9 Apr 2026
Value US$171,055.02 | Price 68.34 | Shares 2,503
Sale 9 Apr 2026
Value US$721,127.32 | Price 68.15 | Shares 10,582
Proposed sale 9 Apr 2026
Value US$247,800.00 | Price 66.47 | Shares 3,728
Proposed sale 9 Apr 2026
Value US$892,185.33 | Price 68.18 | Shares 13,085
Sale 9 Apr 2026
Value US$1,081,855.86 | Price 68.68 | Shares 15,751
Proposed sale 9 Apr 2026
Value US$2,164,585.00 | Price 66.07 | Shares 32,762
Sale 9 Apr 2026
Value US$205,072.50 | Price 68.36 | Shares 3,000
Sale 9 Apr 2026
Value US$2,100,000.00 | Price 70.00 | Shares 30,000
Proposed sale 9 Apr 2026
Value US$2,100,000.00 | Price 70.00 | Shares 30,000
Sale 9 Apr 2026
Value US$339,500.00 | Price 67.90 | Shares 5,000
Sale 9 Apr 2026
Value US$1,693,750.00 | Price 67.75 | Shares 25,000
Sale 9 Apr 2026
Value US$340,000.00 | Price 68.00 | Shares 5,000
Proposed sale 9 Apr 2026
Value US$2,718,978.35 | Price 67.97 | Shares 40,000
Proposed sale 9 Apr 2026
Value US$2,718,978.35 | Price 67.97 | Shares 40,000
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-05-14 2026-05-14 PrS Proposed sale
3.2
Siu Chris

Officer

Officer
40,042
185.92
US$4,064,934 		40,042 185.92 US$4,064,934
2026-05-13 2026-05-13 PrS Proposed sale
3.7
SLAYEN HOWARD T

Director

Non-Executive Director
28,936
407.85
US$925,529 		28,936 407.85 US$925,529
2026-04-22 2026-04-22 S Sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
46,907 -17.5%
23.72
US$701,342 		46,907 -17.5% 23.72 US$701,342
2026-04-22 2026-04-22 S Sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
17,115 -27.4%
100.00
US$1,711,500 		17,115 -27.4% 100.00 US$1,711,500
2026-04-22 2026-04-22 S Sale
2.0
SPORCK ALISTAIR N

VP Contactor Business Unit

Officer
2,000 -27.9%
93.50
US$186,990 		2,000 -27.9% 93.50 US$186,990
2026-04-22 2026-04-22 PrS Proposed sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
17,719
99.83
US$1,768,880 		17,719 99.83 US$1,768,880
2026-04-22 2026-04-22 PrS Proposed sale
2.0
SPORCK ALISTAIR N

Officer

Officer
2,000
95.06
US$190,120 		2,000 95.06 US$190,120
2026-04-21 2026-04-22 PrS Proposed sale
3.3
Geoffrey Scott

Director

Non-Executive Director
50,000
95.00
US$4,749,900 		50,000 95.00 US$4,749,900
2026-04-22 2026-04-21 S Sale
1.4
SALAMONE ALBERTO

EVP, PPBI BUSINESS

Officer
15,000 -23.8%
94.56
US$1,418,400 		15,000 -23.8% 94.56 US$1,418,400
2026-04-21 2026-04-21 S Sale
3.3
SCOTT GEOFFREY GATES

Director

Non-Executive Director
50,000 -50.0%
95.00
US$4,750,000 		50,000 -50.0% 95.00 US$4,750,000
2026-04-21 2026-04-21 S Sale
3.3
SCOTT GEOFFREY GATES

Director

Non-Executive Director
10,000 -16.5%
91.00
US$910,000 		10,000 -16.5% 91.00 US$910,000
2026-04-21 2026-04-21 S Sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
8,787 -12.3%
96.02
US$843,757 		8,787 -12.3% 96.02 US$843,757
2026-04-21 2026-04-21 S Sale
3.8
ROGERS VERNON

Exec VP of Sales & Mktg.

Officer
6,486 -4.1%
94.09
US$610,270 		6,486 -4.1% 94.09 US$610,270
2026-04-21 2026-04-21 PrS Proposed sale
3.8
ROGERS VERNON

Officer

Officer
6,486
94.09
US$610,270 		6,486 94.09 US$610,270
2026-04-21 2026-04-21 PrS Proposed sale
2.2
POSEDEL RHEA J

Officer

Officer
8,787
96.02
US$843,756 		8,787 96.02 US$843,756
2026-04-21 2026-04-21 PrS Proposed sale
1.4
SALAMONE ALBERTO

Officer

Officer
15,000
94.56
US$1,418,369 		15,000 94.56 US$1,418,369
2026-04-21 2026-04-21 PrS Proposed sale
3.3
Geoffrey Scott

Director

Non-Executive Director
10,000
91.00
US$910,000 		10,000 91.00 US$910,000
2026-04-22 2026-04-20 S Sale
1.4
SALAMONE ALBERTO

EVP, PPBI BUSINESS

Officer
15,000 -19.2%
89.57
US$1,343,550 		15,000 -19.2% 89.57 US$1,343,550
2026-04-21 2026-04-20 S Sale
3.8
ROGERS VERNON

Exec VP of Sales & Mktg.

Officer
5,000 -3.3%
90.00
US$450,000 		5,000 -3.3% 90.00 US$450,000
2026-04-20 2026-04-20 S Sale
3.8
ROGERS VERNON

Exec VP of Sales & Mktg.

Officer
2,431 -1.5%
90.00
US$218,790 		2,431 -1.5% 90.00 US$218,790
2026-04-20 2026-04-20 S Sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
7,500 -1.9%
88.09
US$660,675 		7,500 -1.9% 88.09 US$660,675
2026-04-20 2026-04-20 PrS Proposed sale
2.2
POSEDEL RHEA J

Officer

Officer
7,500
88.09
US$660,675 		7,500 88.09 US$660,675
2026-04-20 2026-04-20 PrS Proposed sale
3.8
ROGERS VERNON

Officer

Officer
2,431
90.00
US$218,790 		2,431 90.00 US$218,790
2026-04-20 2026-04-20 PrS Proposed sale
1.4
SALAMONE ALBERTO

Officer

Officer
15,000
89.57
US$1,343,590 		15,000 89.57 US$1,343,590
2026-04-20 2026-04-20 PrS Proposed sale
3.8
ROGERS VERNON

Officer

Officer
5,000
90.00
US$450,000 		5,000 90.00 US$450,000
2026-04-17 2026-04-17 S Sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
7,500 -1.8%
82.00
US$615,000 		7,500 -1.8% 82.00 US$615,000
2026-04-17 2026-04-17 S Sale
3.7
SLAYEN HOWARD T

Director

Non-Executive Director
25,000 -12.3%
85.00
US$2,125,000 		25,000 -12.3% 85.00 US$2,125,000
2026-04-17 2026-04-17 PrS Proposed sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
7,500
82.00
US$615,000 		7,500 82.00 US$615,000
2026-04-17 2026-04-17 PrS Proposed sale
3.2
Siu Chris

Officer

Officer
1,000
81.00
US$81,000 		1,000 81.00 US$81,000
2026-04-17 2026-04-16 S Sale
2.7
DANESH FARIBA

Director

Non-Executive Director
8,000 -37.8%
82.63
US$661,040 		8,000 -37.8% 82.63 US$661,040
2026-04-17 2026-04-16 S Sale
3.3
OLIPHANT LAURA

Director

Non-Executive Director
1,716 -9.3%
81.54
US$139,923 		1,716 -9.3% 81.54 US$139,923
2026-04-17 2026-04-16 S Sale
3.8
ROGERS VERNON

Exec VP of Sales & Mktg.

Officer
5,000 -3.0%
86.88
US$434,400 		5,000 -3.0% 86.88 US$434,400
2026-04-17 2026-04-16 S Sale
2.0
SPORCK ALISTAIR N

VP Contactor Business Unit

Officer
2,000 -8.8%
81.88
US$163,760 		2,000 -8.8% 81.88 US$163,760
2026-04-16 2026-04-16 S Sale
3.3
OLIPHANT LAURA

Director

Non-Executive Director
4,665 -100.0%
85.59
US$399,268 		4,665 -100.0% 85.59 US$399,268
2026-04-16 2026-04-16 S Sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
15,000 -3.5%
80.72
US$1,210,800 		15,000 -3.5% 80.72 US$1,210,800
2026-04-16 2026-04-16 PrS Proposed sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
15,000
80.72
US$1,210,743 		15,000 80.72 US$1,210,743
2026-04-16 2026-04-16 PrS Proposed sale
3.8
ROGERS VERNON

Director

Non-Executive Director
15,000
80.72
US$1,210,743 		15,000 80.72 US$1,210,743
2026-04-16 2026-04-16 PrS Proposed sale
3.3
OLIPHANT LAURA

Director

Non-Executive Director
1,716
81.54
US$139,918 		1,716 81.54 US$139,918
2026-04-16 2026-04-16 PrS Proposed sale
2.7
DANESH FARIBA

Director

Non-Executive Director
8,000
82.63
US$661,040 		8,000 82.63 US$661,040
2026-04-16 2026-04-16 PrS Proposed sale
3.8
ROGERS VERNON

Officer

Officer
5,000
86.88
US$434,400 		5,000 86.88 US$434,400
2026-04-16 2026-04-16 PrS Proposed sale
2.0
SPORCK ALISTAIR N

Officer

Officer
2,000
81.88
US$163,760 		2,000 81.88 US$163,760
2026-04-15 2026-04-15 S Sale
WIMMERS DIDIER

Executive VP of R&D

Officer
1,900 -15.1%
72.02
US$136,845 		1,900 -15.1% 72.02 US$136,845
2026-04-15 2026-04-15 PrS Proposed sale
WIMMERS DIDIER

Officer

Officer
1,900
72.02
US$136,845 		1,900 72.02 US$136,845
2026-04-15 2026-04-14 S Sale
3.2
RICHMOND DONALD P. II

CTO

Officer
17,011 -8.6%
73.18
US$1,244,804 		17,011 -8.6% 73.18 US$1,244,804
2026-04-14 2026-04-14 PrS Proposed sale
3.7
SLAYEN HOWARD T

Officer

Officer
30,000
73.19
US$2,195,700 		30,000 73.19 US$2,195,700
2026-04-15 2026-04-13 S Sale
WIMMERS DIDIER

Executive VP of R&D

Officer
3,500 -21.8%
71.11
US$248,886 		3,500 -21.8% 71.11 US$248,886
2026-04-13 2026-04-13 S Sale
2.7
DANESH FARIBA

Director

Non-Executive Director
7,000 -34.8%
71.49
US$500,431 		7,000 -34.8% 71.49 US$500,431
2026-04-13 2026-04-13 PrS Proposed sale
WIMMERS DIDIER

Officer

Officer
3,500
71.11
US$248,880 		3,500 71.11 US$248,880
2026-04-13 2026-04-13 PrS Proposed sale
2.7
DANESH FARIBA

Director

Non-Executive Director
7,000
71.49
US$500,431 		7,000 71.49 US$500,431
2026-04-14 2026-04-10 S Sale
2.0
SPORCK ALISTAIR N

VP Contactor Business Unit

Officer
2,000 -8.0%
67.37
US$134,730 		2,000 -8.0% 67.37 US$134,730
2026-04-14 2026-04-10 S Sale
3.5
Erickson Gayn

President and CEO

Executive Director
96,036 -32.7%
70.58
US$6,778,519 		96,036 -32.7% 70.58 US$6,778,519
2026-04-14 2026-04-10 S Sale
3.5
Erickson Gayn

President and CEO

Executive Director
56,788 -22.8%
70.58
US$4,008,273 		56,788 -22.8% 70.58 US$4,008,273
2026-04-13 2026-04-10 S Sale
2.7
DANESH FARIBA

Director

Non-Executive Director
3,500 -21.0%
70.05
US$245,158 		3,500 -21.0% 70.05 US$245,158
2026-04-10 2026-04-10 S Sale
3.8
ROGERS VERNON

Exec VP of Sales & Mktg.

Officer
10,888 -6.1%
70.00
US$762,160 		10,888 -6.1% 70.00 US$762,160
2026-04-10 2026-04-10 PrS Proposed sale
3.8
ROGERS VERNON

Officer

Officer
10,888
70.00
US$762,160 		10,888 70.00 US$762,160
2026-04-10 2026-04-10 PrS Proposed sale
2.0
SPORCK ALISTAIR N

Officer

Officer
2,000
67.37
US$134,730 		2,000 67.37 US$134,730
2026-04-10 2026-04-10 PrS Proposed sale
3.5
Erickson Gayn

Officer; Director

Executive Director
56,788
70.58
US$4,008,277 		56,788 70.58 US$4,008,277
2026-04-10 2026-04-10 PrS Proposed sale
3.5
Erickson Gayn

Officer; Director

Executive Director
96,036
70.58
US$6,778,524 		96,036 70.58 US$6,778,524
2026-04-10 2026-04-10 PrS Proposed sale
2.7
DANESH FARIBA

Director

Non-Executive Director
3,500
70.05
US$245,158 		3,500 70.05 US$245,158
2026-04-14 2026-04-09 S Sale
ENGINEER ADIL

Chief Operating Officer

Officer
1,200 -2.8%
66.27
US$79,524 		1,200 -2.8% 66.27 US$79,524
2026-04-14 2026-04-09 S Sale
ENGINEER ADIL

Chief Operating Officer

Officer
2,528 -5.6%
66.32
US$167,644 		2,528 -5.6% 66.32 US$167,644
2026-04-10 2026-04-09 S Sale
ENGINEER ADIL

Chief Operating Officer

Officer
2,503 -5.3%
68.34
US$171,055 		2,503 -5.3% 68.34 US$171,055
2026-04-10 2026-04-09 S Sale
ENGINEER ADIL

Chief Operating Officer

Officer
10,582 -18.2%
68.15
US$721,127 		10,582 -18.2% 68.15 US$721,127
2026-04-10 2026-04-09 S Sale
3.2
RICHMOND DONALD P. II

CTO

Officer
15,751 -7.3%
68.68
US$1,081,856 		15,751 -7.3% 68.68 US$1,081,856
2026-04-10 2026-04-09 S Sale
3.3
OLIPHANT LAURA

Director

Non-Executive Director
3,000 -39.1%
68.36
US$205,072 		3,000 -39.1% 68.36 US$205,072
2026-04-10 2026-04-09 S Sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
30,000 -6.6%
70.00
US$2,100,000 		30,000 -6.6% 70.00 US$2,100,000
2026-04-10 2026-04-09 S Sale
3.3
SCOTT GEOFFREY GATES

Director

Non-Executive Director
5,000 -4.5%
67.90
US$339,500 		5,000 -4.5% 67.90 US$339,500
2026-04-10 2026-04-09 S Sale
3.3
SCOTT GEOFFREY GATES

Director

Non-Executive Director
25,000 -18.5%
67.75
US$1,693,750 		25,000 -18.5% 67.75 US$1,693,750
2026-04-10 2026-04-09 S Sale
3.3
SCOTT GEOFFREY GATES

Director

Non-Executive Director
5,000 -3.6%
68.00
US$340,000 		5,000 -3.6% 68.00 US$340,000
2026-04-10 2026-04-09 PrS Proposed sale
3.3
Geoffrey Scott

Director

Non-Executive Director
40,000
67.97
US$2,718,978 		40,000 67.97 US$2,718,978
2026-04-09 2026-04-09 PrS Proposed sale
2.2
POSEDEL RHEA J

Director

Non-Executive Director
30,000
70.00
US$2,100,000 		30,000 70.00 US$2,100,000
2026-04-09 2026-04-09 PrS Proposed sale
3.2
RICHMOND DONALD P. II

Officer

Officer
32,762
66.07
US$2,164,585 		32,762 66.07 US$2,164,585
2026-04-09 2026-04-09 PrS Proposed sale
ENGINEER ADIL

Officer

Officer
3,728
66.47
US$247,800 		3,728 66.47 US$247,800
2026-04-09 2026-04-09 PrS Proposed sale
ENGINEER ADIL

Officer

Officer
13,085
68.18
US$892,185 		13,085 68.18 US$892,185
2026-04-09 2026-04-09 PrS Proposed sale
3.3
Caroline J Scott TTEE

Family of Director

Non-Executive Director
40,000
67.97
US$2,718,978 		40,000 67.97 US$2,718,978
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