Aehr Test Systems (AEHR)
Aehr Test Systems on one page: short interest, daily short volume, fails to deliver, planned sales, large holders, 13F holders, financials, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as instruments for meas & testing of electricity & elec signals.
5.6M
Short interest
settlement 2026-10-15
2.0
Days to cover
-0.4 days vs prior
61.3%
Short share of volume
2026-10-28
369
Fails to deliver
settlement 2026-09-30
Thu 7 Jan
Next earnings
estimated date
-$17.3M
Insider flow, 90 days
0 buys, 18 sells
As of 2026-10-28.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in AEHR is 5,622,469 shares, up 504,039 shares over the last month. Over the last 48 readings it ranged from 4,002,010 shares (15 June 2026) to 7,294,318 shares (15 April 2025). At the reported average volume of 2.8M shares a day that is 2.0 days to cover.
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| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 5,622,469 | +7.7% | 2,811,929 | 2.00 |
| 2026-09-30 | 5,220,478 | +2.0% | 2,158,827 | 2.42 |
| 2026-09-15 | 5,118,430 | +17.7% | 3,362,220 | 1.52 |
| 2026-08-31 | 4,349,980 | +0.2% | 2,157,746 | 2.02 |
| 2026-08-14 | 4,342,530 | +1.2% | 2,550,077 | 1.70 |
| 2026-07-31 | 4,292,682 | -10.8% | 3,093,545 | 1.39 |
| 2026-07-15 | 4,811,203 | +15.5% | 3,365,075 | 1.43 |
| 2026-06-30 | 4,164,166 | +4.0% | 1,435,707 | 2.90 |
| 2026-06-15 | 4,002,010 | -2.4% | 1,951,045 | 2.05 |
| 2026-05-29 | 4,101,815 | -14.3% | 2,322,811 | 1.77 |
| 2026-05-15 | 4,786,767 | +1.5% | 2,756,200 | 1.74 |
| 2026-04-30 | 4,716,602 | -15.0% | 3,882,993 | 1.21 |
| 2026-04-15 | 5,550,171 | +35.8% | 5,163,712 | 1.07 |
| 2026-03-31 | 4,088,490 | -7.8% | 1,512,170 | 2.70 |
| 2026-03-13 | 4,432,991 | -8.3% | 2,000,550 | 2.22 |
| 2026-02-27 | 4,833,463 | -4.3% | 1,356,209 | 3.56 |
| 2026-02-13 | 5,051,480 | +9.4% | 1,542,574 | 3.27 |
| 2026-01-30 | 4,617,312 | -1.4% | 1,207,645 | 3.82 |
| 2026-01-15 | 4,682,039 | -2.8% | 1,361,962 | 3.44 |
| 2025-12-31 | 4,814,704 | -0.2% | 503,743 | 9.56 |
| 2025-12-15 | 4,824,545 | -5.0% | 567,114 | 8.51 |
| 2025-11-28 | 5,079,433 | +2.1% | 712,420 | 7.13 |
| 2025-11-14 | 4,973,671 | +1.6% | 1,036,658 | 4.80 |
| 2025-10-31 | 4,895,591 | +3.7% | 1,501,316 | 3.26 |
| 2025-10-15 | 4,722,543 | -6.5% | 2,518,937 | 1.87 |
| 2025-09-30 | 5,051,125 | -10.3% | 1,671,813 | 3.02 |
| 2025-09-15 | 5,628,810 | -0.2% | 1,244,238 | 4.52 |
| 2025-08-29 | 5,641,398 | -2.3% | 2,849,221 | 1.98 |
| 2025-08-15 | 5,773,193 | -0.8% | 1,003,951 | 5.75 |
| 2025-07-31 | 5,819,862 | -11.6% | 1,825,481 | 3.19 |
| 2025-07-15 | 6,583,933 | +0.4% | 2,685,213 | 2.45 |
| 2025-06-30 | 6,555,809 | -2.2% | 1,018,426 | 6.44 |
| 2025-06-13 | 6,704,496 | -7.5% | 1,020,710 | 6.57 |
| 2025-05-30 | 7,252,374 | +4.6% | 577,041 | 12.57 |
| 2025-05-15 | 6,935,721 | -3.1% | 371,331 | 18.68 |
| 2025-04-30 | 7,158,866 | -1.9% | 400,642 | 17.87 |
| 2025-04-15 | 7,294,318 | +11.8% | 1,235,861 | 5.90 |
| 2025-03-31 | 6,521,286 | -6.0% | 658,325 | 9.91 |
| 2025-03-14 | 6,935,559 | -3.3% | 1,061,889 | 6.53 |
| 2025-02-28 | 7,171,558 | -0.8% | 937,566 | 7.65 |
| 2025-02-14 | 7,231,899 | +10.4% | 645,678 | 11.20 |
| 2025-01-31 | 6,551,680 | -6.3% | 1,147,114 | 5.71 |
| 2025-01-15 | 6,993,208 | +7.8% | 2,184,880 | 3.20 |
| 2024-12-31 | 6,484,128 | +0.1% | 1,928,574 | 3.36 |
| 2024-12-13 | 6,478,825 | +1.6% | 800,402 | 8.09 |
| 2024-11-29 | 6,378,980 | -2.1% | 615,889 | 10.36 |
| 2024-11-15 | 6,518,222 | +4.3% | 1,242,290 | 5.25 |
| 2024-10-31 | 6,252,225 | +15.1% | 1,279,238 | 4.89 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 28 October 2026, the short share of AEHR volume is 61.3%, up 4.7 points over the last five sessions. Over the last 30 readings it ranged from 40.6% (14 October 2026) to 65.4% (17 September 2026). The latest reading is 8.4 points above the 30-session average of 52.9%, on 783K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-10-28 | 480K | 783K | 61.3% | 1,126 |
| 2026-10-27 | 716K | 1.3M | 54.4% | 10,420 |
| 2026-10-26 | 383K | 829K | 46.2% | 51 |
| 2026-10-23 | 342K | 769K | 44.5% | 43,357 |
| 2026-10-22 | 665K | 1.3M | 51.5% | 70,365 |
| 2026-10-21 | 325K | 573K | 56.7% | 1,224 |
| 2026-10-20 | 540K | 985K | 54.8% | 4,295 |
| 2026-10-19 | 677K | 1.2M | 55.8% | 80,956 |
| 2026-10-16 | 724K | 1.5M | 47.3% | 99,537 |
| 2026-10-15 | 1.3M | 2.2M | 57.4% | 93,902 |
| 2026-10-14 | 589K | 1.5M | 40.6% | 2,222 |
| 2026-10-13 | 610K | 1.1M | 57.9% | 406 |
| 2026-10-12 | 499K | 1.1M | 44.5% | 1,545 |
| 2026-10-09 | 424K | 917K | 46.2% | 4,960 |
| 2026-10-08 | 612K | 1.2M | 50.5% | 7,156 |
| 2026-10-07 | 823K | 1.7M | 48.8% | 70,954 |
| 2026-10-06 | 1.1M | 2.0M | 55.7% | 22,530 |
| 2026-10-05 | 614K | 965K | 63.6% | 1,826 |
| 2026-10-02 | 527K | 1.1M | 48.3% | 4,727 |
| 2026-10-01 | 348K | 656K | 53.1% | 500 |
| 2026-09-30 | 289K | 564K | 51.3% | 34 |
| 2026-09-29 | 691K | 1.2M | 56.9% | 50 |
| 2026-09-28 | 466K | 977K | 47.7% | 240 |
| 2026-09-25 | 798K | 1.4M | 56.9% | 5,238 |
| 2026-09-24 | 342K | 719K | 47.5% | 1,720 |
| 2026-09-23 | 605K | 1.3M | 45.6% | 4,475 |
| 2026-09-22 | 518K | 833K | 62.2% | 4,423 |
| 2026-09-21 | 627K | 1.1M | 55.2% | 63 |
| 2026-09-18 | 466K | 774K | 60.2% | 250 |
| 2026-09-17 | 681K | 1.0M | 65.4% | 2,510 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 30 September 2026, the fails-to-deliver balance in AEHR is 369 shares, down 92 shares over the last settlement date. Over the last 30 readings it ranged from 3 shares (4 June 2026) to 14,065 shares (11 September 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-09-30 | 369 | $100.78 | $37K |
| 2026-09-28 | 461 | $104.39 | $48K |
| 2026-09-23 | 12 | $100.60 | $1K |
| 2026-09-22 | 402 | $96.93 | $39K |
| 2026-09-21 | 600 | $93.49 | $56K |
| 2026-09-11 | 14,065 | $93.81 | $1.3M |
| 2026-09-08 | 100 | $86.26 | $9K |
| 2026-08-31 | 405 | $80.81 | $33K |
| 2026-08-24 | 812 | $101.73 | $83K |
| 2026-08-17 | 700 | $134.06 | $94K |
| 2026-08-11 | 1,440 | $106.20 | $153K |
| 2026-08-10 | 6,729 | $103.07 | $694K |
| 2026-07-22 | 615 | $98.91 | $61K |
| 2026-07-17 | 1,254 | $84.20 | $106K |
| 2026-07-14 | 3,694 | $68.02 | $251K |
| 2026-07-06 | 100 | $69.96 | $7K |
| 2026-06-25 | 1,004 | $95.20 | $96K |
| 2026-06-22 | 2,607 | $115.30 | $301K |
| 2026-06-18 | 1,785 | $112.62 | $201K |
| 2026-06-16 | 23 | $115.88 | $3K |
| 2026-06-15 | 44 | $108.47 | $5K |
| 2026-06-08 | 1,313 | $98.45 | $129K |
| 2026-06-04 | 3 | $114.59 | $344 |
| 2026-06-03 | 3,653 | $113.00 | $413K |
| 2026-06-01 | 3,128 | $92.33 | $289K |
| 2026-05-27 | 157 | $109.92 | $17K |
| 2026-05-26 | 410 | $95.02 | $39K |
| 2026-05-22 | 12 | $91.30 | $1K |
| 2026-05-21 | 1,449 | $82.34 | $119K |
| 2026-05-19 | 130 | $83.57 | $11K |
Insider trades
SEC Form 4, newest first. JSONInsiders at AEHR reported 18 open-market sells worth $17.3M in the last 90 days and no open-market buys. Latest filing: Erickson Gayn (President and CEO) on 2026-10-27.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-27 | Erickson Gayn | President and CEO | Tax withholding | 851 | $63.95 | $54K | 190K |
| 2026-10-27 | RICHMOND DONALD P. II | CTO | Tax withholding | 145 | $63.95 | $9K | 187K |
| 2026-10-27 | ROGERS VERNON | Exec VP of Sales & Mktg. | Tax withholding | 197 | $63.95 | $13K | 187K |
| 2026-10-27 | SPORCK ALISTAIR N | VP Contactor Business Unit | Tax withholding | 188 | $63.95 | $12K | 22K |
| 2026-10-27 | ENGINEER ADIL | Chief Operating Officer | Tax withholding | 202 | $63.95 | $13K | 46K |
| 2026-10-20 | POSEDEL RHEA J | Director | Exercise or conversion | 18K | $1.77 | $32K | 65K |
| 2026-10-12 | ROGERS VERNON | Exec VP of Sales & Mktg. | Tax withholding | 426 | $84.64 | $36K | 187K |
| 2026-10-12 | RICHMOND DONALD P. II | CTO | Tax withholding | 388 | $84.64 | $33K | 187K |
| 2026-10-12 | Siu Chris | CFO | Tax withholding | 987 | $84.64 | $84K | 75K |
| 2026-10-12 | SPORCK ALISTAIR N | VP Contactor Business Unit | Tax withholding | 295 | $84.64 | $25K | 22K |
| 2026-10-12 | Erickson Gayn | President and CEO | Tax withholding | 3K | $84.64 | $226K | 191K |
| 2026-10-12 | ENGINEER ADIL | Chief Operating Officer | Tax withholding | 547 | $84.64 | $46K | 46K |
| 2026-10-02 | Siu Chris | CFO | Tax withholding | 1K | $107.21 | $125K | 76K |
| 2026-10-02 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Tax withholding | 556 | $107.21 | $60K | 43K |
| 2026-10-02 | ROGERS VERNON | Exec VP of Sales & Mktg. | Tax withholding | 476 | $107.21 | $51K | 187K |
| 2026-10-02 | RICHMOND DONALD P. II | CTO | Tax withholding | 439 | $107.21 | $47K | 187K |
| 2026-10-02 | ENGINEER ADIL | Chief Operating Officer | Tax withholding | 620 | $107.21 | $66K | 46K |
| 2026-10-02 | Erickson Gayn | President and CEO | Tax withholding | 3K | $107.21 | $347K | 194K |
| 2026-10-02 | SPORCK ALISTAIR N | VP Contactor Business Unit | Tax withholding | 345 | $107.21 | $37K | 22K |
| 2026-10-01 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Tax withholding | 45 | $101.60 | $5K | 43K |
| 2026-10-01 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Other transaction | 2K | $6.67 | $10K | 43K |
| 2026-10-01 | WIMMERS DIDIER | Executive VP of R&D | Tax withholding | 54 | $101.60 | $5K | 14K |
| 2026-10-01 | WIMMERS DIDIER | Executive VP of R&D | Other transaction | 1K | $6.67 | $9K | 14K |
| 2026-10-01 | SPORCK ALISTAIR N | VP Contactor Business Unit | Other transaction | 1K | $6.67 | $8K | 6K |
| 2026-10-01 | SPORCK ALISTAIR N | VP Contactor Business Unit | Tax withholding | 54 | $101.60 | $5K | 22K |
| 2026-10-01 | Erickson Gayn | President and CEO | Other transaction | 1K | $6.67 | $7K | 159K |
| 2026-10-01 | Erickson Gayn | President and CEO | Tax withholding | 499 | $101.60 | $51K | 197K |
| 2026-10-01 | ENGINEER ADIL | Chief Operating Officer | Tax withholding | 98 | $101.60 | $10K | 47K |
| 2026-10-01 | ENGINEER ADIL | Chief Operating Officer | Other transaction | 730 | $6.67 | $5K | 47K |
| 2026-10-01 | RICHMOND DONALD P. II | CTO | Tax withholding | 76 | $101.60 | $8K | 188K |
| 2026-10-01 | RICHMOND DONALD P. II | CTO | Other transaction | 1K | $6.67 | $7K | 188K |
| 2026-10-01 | ROGERS VERNON | Exec VP of Sales & Mktg. | Tax withholding | 77 | $101.60 | $8K | 188K |
| 2026-10-01 | ROGERS VERNON | Exec VP of Sales & Mktg. | Other transaction | 2K | $6.67 | $11K | 188K |
| 2026-10-01 | Siu Chris | CFO | Other transaction | 1K | $6.67 | $7K | 7K |
| 2026-10-01 | Siu Chris | CFO | Tax withholding | 194 | $101.60 | $20K | 77K |
| 2026-09-03 | WIMMERS DIDIER | Executive VP of R&D | Tax withholding | 317 | $76.27 | $24K | 12K |
| 2026-09-01 | Siu Chris | CFO | Tax withholding | 496 | $76.59 | $38K | 77K |
| 2026-08-17 | ROGERS VERNON | Exec VP of Sales & Mktg. | Sell | 4K | $143.77 | $574K | 186K |
| 2026-08-14 | ROGERS VERNON | Exec VP of Sales & Mktg. | Sell | 1K | $139.00 | $139K | 190K |
| 2026-08-14 | ROGERS VERNON | Exec VP of Sales & Mktg. | Sell | 1K | $134.00 | $134K | 191K |
| 2026-08-14 | ENGINEER ADIL | Chief Operating Officer | Gift | 500 | $0.00 | $0 | 46K |
| 2026-08-14 | SLAYEN HOWARD T | Director | Sell | 6K | $133.03 | $758K | 141K |
| 2026-08-14 | POSEDEL RHEA J | Director | Sell | 6K | $140.00 | $836K | 382K |
| 2026-08-13 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Sell | 5K | $127.50 | $698K | 42K |
| 2026-08-13 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Sell | 4K | $128.00 | $538K | 47K |
| 2026-08-12 | ENGINEER ADIL | Chief Operating Officer | Sell | 8K | $131.09 | $983K | 47K |
| 2026-08-12 | Erickson Gayn | President and CEO | Sell | 38K | $130.79 | $5.0M | 158K |
| 2026-08-12 | Erickson Gayn | President and CEO | Sell | 2K | $132.27 | $205K | 196K |
| 2026-08-12 | POSEDEL RHEA J | Director | Sell | 8K | $130.00 | $1.1M | 388K |
| 2026-08-12 | SCOTT GEOFFREY GATES | Director | Sell | 20K | $131.51 | $2.6M | 10K |
| 2026-08-12 | SCOTT GEOFFREY GATES | Director | Gift | 7K | $0.00 | $0 | 24K |
| 2026-08-12 | ENGINEER ADIL | Chief Operating Officer | Sell | 8K | $130.95 | $982K | 54K |
| 2026-08-12 | ENGINEER ADIL | Chief Operating Officer | Exercise or conversion | 15K | $9.45 | $142K | 62K |
| 2026-08-12 | OLIPHANT LAURA | Director | Sell | 2K | $133.00 | $228K | 16K |
| 2026-08-10 | SPORCK ALISTAIR N | VP Contactor Business Unit | Sell | 1K | $108.49 | $108K | 23K |
| 2026-08-04 | SPORCK ALISTAIR N | VP Contactor Business Unit | Sell | 1K | $101.10 | $132K | 24K |
| 2026-08-04 | SPORCK ALISTAIR N | VP Contactor Business Unit | Sell | 699 | $100.69 | $70K | 25K |
| 2026-08-04 | SLAYEN HOWARD T | Director | Sell | 20K | $108.30 | $2.2M | 146K |
| 2026-08-04 | OLIPHANT LAURA | Director | Gift | 500 | $0.00 | $0 | 18K |
| 2026-08-03 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Tax withholding | 204 | $79.98 | $16K | 52K |
| 2026-07-30 | SLAYEN HOWARD T | Director | Gift | 5K | $0.00 | $0 | 166K |
| 2026-07-27 | Erickson Gayn | President and CEO | Tax withholding | 1K | $77.48 | $82K | 198K |
| 2026-07-27 | ROGERS VERNON | Exec VP of Sales & Mktg. | Tax withholding | 198 | $77.48 | $15K | 192K |
| 2026-07-27 | SPORCK ALISTAIR N | VP Contactor Business Unit | Tax withholding | 133 | $77.48 | $10K | 26K |
| 2026-07-27 | RICHMOND DONALD P. II | CTO | Tax withholding | 102 | $77.48 | $8K | 187K |
| 2026-07-27 | ENGINEER ADIL | Chief Operating Officer | Tax withholding | 142 | $77.48 | $11K | 47K |
| 2026-07-21 | SCOTT GEOFFREY GATES | Director | Gift | 3K | $0.00 | $0 | 52K |
| 2026-07-20 | SPORCK ALISTAIR N | VP Contactor Business Unit | Tax withholding | 334 | $81.05 | $27K | 26K |
| 2026-07-16 | SCOTT GEOFFREY GATES | Director | Sell | 20K | $82.13 | $1.6M | 30K |
| 2026-07-16 | SCOTT GEOFFREY GATES | Director | Gift | 10K | $0.00 | $0 | 31K |
| 2026-07-14 | Erickson Gayn | President and CEO | Tax withholding | 3K | $72.01 | $248K | 199K |
| 2026-07-14 | RICHMOND DONALD P. II | CTO | Tax withholding | 328 | $72.01 | $24K | 187K |
| 2026-07-14 | ROGERS VERNON | Exec VP of Sales & Mktg. | Tax withholding | 573 | $72.01 | $41K | 192K |
| 2026-07-14 | ROGERS VERNON | Exec VP of Sales & Mktg. | Exercise or conversion | 4K | $1.64 | $6K | 193K |
| 2026-07-13 | ROGERS VERNON | Exec VP of Sales & Mktg. | Tax withholding | 588 | $72.60 | $43K | 189K |
| 2026-07-13 | ROGERS VERNON | Exec VP of Sales & Mktg. | Exercise or conversion | 15K | $1.64 | $25K | 190K |
| 2026-07-13 | ROGERS VERNON | Exec VP of Sales & Mktg. | Exercise or conversion | 21K | $1.64 | $35K | 175K |
| 2026-07-13 | SPORCK ALISTAIR N | VP Contactor Business Unit | Tax withholding | 209 | $72.60 | $15K | 26K |
| 2026-07-13 | Siu Chris | CFO | Tax withholding | 988 | $72.60 | $72K | 78K |
| 2026-07-13 | RICHMOND DONALD P. II | CTO | Tax withholding | 423 | $72.60 | $31K | 187K |
| 2026-07-13 | Erickson Gayn | President and CEO | Tax withholding | 4K | $72.60 | $320K | 202K |
| 2026-07-13 | ENGINEER ADIL | Chief Operating Officer | Tax withholding | 387 | $72.60 | $28K | 47K |
| 2026-07-02 | Siu Chris | CFO | Tax withholding | 1K | $69.96 | $80K | 79K |
| 2026-07-02 | SPORCK ALISTAIR N | VP Contactor Business Unit | Tax withholding | 259 | $69.96 | $18K | 26K |
| 2026-07-02 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Tax withholding | 556 | $69.96 | $39K | 52K |
| 2026-07-02 | RICHMOND DONALD P. II | CTO | Tax withholding | 311 | $69.96 | $22K | 187K |
| 2026-07-02 | ROGERS VERNON | Exec VP of Sales & Mktg. | Tax withholding | 337 | $69.96 | $24K | 154K |
| 2026-07-02 | Erickson Gayn | President and CEO | Tax withholding | 3K | $69.96 | $216K | 206K |
| 2026-07-02 | ENGINEER ADIL | Chief Operating Officer | Tax withholding | 437 | $69.96 | $31K | 48K |
| 2026-07-01 | WIMMERS DIDIER | Executive VP of R&D | Grant | 2K | $0.00 | $0 | 13K |
| 2026-07-01 | Siu Chris | CFO | Tax withholding | 2K | $84.42 | $187K | 80K |
| 2026-07-01 | Siu Chris | CFO | Grant | 6K | $0.00 | $0 | 82K |
| 2026-07-01 | Siu Chris | CFO | Grant | 6K | $0.00 | $0 | 76K |
| 2026-07-01 | SPORCK ALISTAIR N | VP Contactor Business Unit | Tax withholding | 2K | $84.42 | $187K | 26K |
| 2026-07-01 | SPORCK ALISTAIR N | VP Contactor Business Unit | Grant | 2K | $0.00 | $0 | 29K |
| 2026-07-01 | SPORCK ALISTAIR N | VP Contactor Business Unit | Grant | 6K | $0.00 | $0 | 26K |
| 2026-07-01 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Tax withholding | 1K | $84.42 | $123K | 52K |
| 2026-07-01 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Grant | 2K | $0.00 | $0 | 54K |
| 2026-07-01 | SALAMONE ALBERTO | EVP, PPBI BUSINESS | Grant | 4K | $0.00 | $0 | 52K |
| 2026-07-01 | RICHMOND DONALD P. II | CTO | Tax withholding | 2K | $84.42 | $187K | 188K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Planned sales (Form 144)
Newest first. JSON50 Form 144 notices on file for AEHR worth $53.3M at the prices reported; 13 in the last 90 days worth $17.3M. Latest: ROGERS VERNON filed on 2026-08-17 to sell 3,994 shares ($574K) from 2026-08-17.
| Filed | Seller | Shares | Market value | Of outstanding | Sale from | Broker |
|---|---|---|---|---|---|---|
| 2026-08-17 | ROGERS VERNONOfficer | 4K | $574K | 0.012% | 2026-08-17 | Fidelity Brokerage Services LLC |
| 2026-08-14 | ROGERS VERNONOfficer | 2K | $273K | 0.006% | 2026-08-14 | Fidelity Brokerage Services LLC |
| 2026-08-14 | SLAYEN HOWARD TDirector | 6K | $754K | 0.017% | 2026-08-14 | Charles Schwab Corp. |
| 2026-08-14 | POSEDEL RHEA JDirector | 6K | $836K | 0.018% | 2026-08-14 | Oppenheimer & Co, Inc |
| 2026-08-13 | SALAMONE ALBERTOOfficer | 10K | $1.2M | 0.030% | 2026-08-13 | Fidelity Brokerage Services LLC |
| 2026-08-12 | SCOTT GEOFFREY GATESDirector | 20K | $2.6M | 0.061% | 2026-08-12 | Fidelity Brokerage Services LLC |
| 2026-08-12 | OLIPHANT LAURADirector | 2K | $228K | 0.005% | 2026-08-12 | Fidelity Brokerage Services LLC |
| 2026-08-12 | Erickson GaynOfficer, Director | 40K | $5.2M | 0.123% | 2026-08-12 | Fidelity Brokerage Services LLC |
| 2026-08-12 | ENGINEER ADILOfficer | 15K | $2.0M | 0.046% | 2026-08-12 | Fidelity Brokerage Services LLC |
| 2026-08-12 | POSEDEL RHEA JDirector | 8K | $1.1M | 0.026% | 2026-08-12 | Oppenheimer & Co, Inc |
| 2026-08-10 | SPORCK ALISTAIR NOfficer | 1K | $108K | 0.003% | 2026-08-10 | Fidelity Brokerage Services LLC |
| 2026-08-04 | SPORCK ALISTAIR NOfficer | 2K | $202K | 0.006% | 2026-08-04 | Fidelity Brokerage Services LLC |
| 2026-08-04 | SLAYEN HOWARD TDirector | 20K | $2.2M | 0.061% | 2026-08-04 | Charles Schwab Corp. |
| 2026-07-16 | SCOTT GEOFFREY GATESDirector | 20K | $1.6M | 0.064% | 2026-07-16 | Fidelity Brokerage Services LLC |
| 2026-05-14 | Siu ChrisOfficer | 2K | $214K | 0.007% | 2026-05-14 | Charles Schwab Corp. |
| 2026-05-13 | SLAYEN HOWARD TDirector | 7K | $714K | 0.022% | 2026-05-13 | Fidelity Brokerage Services LLC |
| 2026-04-22 | SPORCK ALISTAIR NOfficer | 2K | $190K | 0.006% | 2026-04-22 | Charles Schwab Corp. |
| 2026-04-22 | POSEDEL RHEA JDirector | 18K | $1.8M | 0.056% | 2026-04-22 | Oppenheimer & Co, Inc |
| 2026-04-21 | SALAMONE ALBERTOOfficer | 15K | $1.4M | 0.048% | 2026-04-21 | Fidelity Brokerage Services LLC |
| 2026-04-21 | ROGERS VERNONOfficer | 6K | $610K | 0.021% | 2026-04-21 | Oppenheimer & Co, Inc |
| 2026-04-21 | POSEDEL RHEA JOfficer | 9K | $844K | 0.028% | 2026-04-21 | Oppenheimer & Co, Inc |
| 2026-04-20 | SALAMONE ALBERTOOfficer | 15K | $1.3M | 0.048% | 2026-04-20 | Fidelity Brokerage Services LLC |
| 2026-04-20 | ROGERS VERNONOfficer | 5K | $450K | 0.016% | 2026-04-20 | Fidelity Brokerage Services LLC |
| 2026-04-20 | POSEDEL RHEA JOfficer | 8K | $661K | 0.024% | 2026-04-20 | Oppenheimer & Co, Inc |
| 2026-04-20 | ROGERS VERNONOfficer | 2K | $219K | 0.008% | 2026-04-20 | Oppenheimer & Co, Inc |
| 2026-04-17 | Siu ChrisOfficer | 1K | $81K | 0.003% | 2026-04-17 | Charles Schwab Corporation |
| 2026-04-17 | POSEDEL RHEA JDirector | 8K | $615K | 0.024% | 2026-04-17 | Oppenheimer & Co, Inc |
| 2026-04-16 | OLIPHANT LAURADirector | 2K | $140K | 0.005% | 2026-04-16 | Fidelity Brokerage Services LLC |
| 2026-04-16 | DANESH FARIBADirector | 8K | $661K | 0.025% | 2026-04-16 | Fidelity Brokerage Services LLC |
| 2026-04-16 | ROGERS VERNONOfficer | 5K | $434K | 0.016% | 2026-04-16 | Fidelity Brokerage Services LLC |
| 2026-04-16 | SPORCK ALISTAIR NOfficer | 2K | $164K | 0.006% | 2026-04-16 | Fidelity Brokerage Services LLC |
| 2026-04-16 | POSEDEL RHEA JDirector | 15K | $1.2M | 0.048% | 2026-04-16 | Oppenheimer & Co, Inc |
| 2026-04-16 | ROGERS VERNONDirector | 15K | $1.2M | 0.048% | 2026-04-16 | Oppenheimer & Co, Inc |
| 2026-04-15 | WIMMERS DIDIEROfficer | 2K | $137K | 0.006% | 2026-04-15 | Fidelity Brokerage Services LLC |
| 2026-04-14 | SLAYEN HOWARD TOfficer | 30K | $2.2M | 0.095% | 2026-04-14 | Charles Schwab Corp. |
| 2026-04-13 | DANESH FARIBADirector | 7K | $500K | 0.022% | 2026-04-13 | Fidelity Brokerage Services LLC |
| 2026-04-13 | WIMMERS DIDIEROfficer | 4K | $249K | 0.011% | 2026-04-13 | CHARLES SCHWAB |
| 2026-04-10 | SPORCK ALISTAIR NOfficer | 2K | $135K | 0.006% | 2026-04-10 | Fidelity Brokerage Services LLC |
| 2026-04-10 | Erickson GaynOfficer, Director | 57K | $4.0M | 0.181% | 2026-04-10 | Fidelity Brokerage Services LLC |
| 2026-04-10 | Erickson GaynOfficer, Director | 96K | $6.8M | 0.305% | 2026-04-10 | Fidelity Brokerage Services LLC |
| 2026-04-10 | DANESH FARIBADirector | 4K | $245K | 0.011% | 2026-04-10 | Fidelity Brokerage Services LLC |
| 2026-04-10 | ROGERS VERNONOfficer | 11K | $762K | 0.035% | 2026-04-10 | Oppenheimer & Co, Inc |
| 2026-04-09 | ENGINEER ADILOfficer | 13K | $892K | 0.042% | 2026-04-09 | Fidelity Brokerage Services LLC |
| 2026-04-09 | RICHMOND DONALD P. IIOfficer | 33K | $2.2M | 0.104% | 2026-04-09 | Charles Schwab Corp. |
| 2026-04-09 | ENGINEER ADILOfficer | 4K | $248K | 0.012% | 2026-04-09 | Charles Schwab Corp. |
| 2026-04-09 | OLIPHANT LAURADirector | 8K | $484K | 0.024% | 2026-04-09 | Charles Schwab & Co., Inc. |
| 2026-04-09 | POSEDEL RHEA JDirector | 30K | $2.1M | 0.095% | 2026-04-09 | Oppenheimer & Co, Inc |
| 2026-02-13 | POSEDEL RHEA JOfficer | 14K | $390K | 0.046% | 2026-02-13 | Oppenheimer & Co, Inc |
| 2026-02-09 | SPORCK ALISTAIR NOfficer | 3K | $83K | 0.010% | 2026-02-09 | Fidelity Brokerage Services LLC |
| 2026-01-29 | OLIPHANT LAURADirector | 503 | $13K | 0.002% | 2026-01-29 | The Charles Schwab Corporation |
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON1 holder reports 5% or more of AEHR in its latest filing, on Schedule 13G (passive). The holder is JANE STREET GROUP, LLC at 5.1% of the class (1,648,523 shares), filed 2026-07-29 for an event on 2026-07-24.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G/Ano. 1 | AWM Investment Company, Inc.investment adviser | 375K | 1.1% | 2026-06-30 |
| 2026-08-06 | 13G/Ano. 6 | FMR LLCparent holding company | 1.0M | 3.2% | 2026-06-30 |
| 2026-08-06 | 13G/Ano. 6 | Abigail P. Johnsonindividual | 1.0M | 3.2% | 2026-06-30 |
| 2026-07-29 | 13G | JANE STREET GROUP, LLCparent holding company | 1.6M | 5.1% | 2026-07-24 |
| 2026-07-29 | 13G | Jane Street Capital, LLCbroker-dealer | 845K | 2.6% | 2026-07-24 |
| 2026-07-29 | 13G | Jane Street Global Trading, LLCother entity | 803K | 2.5% | 2026-07-24 |
| 2026-03-26 | 13G/Ano. 3 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-02-09 | 13G/Ano. 2 | BAILLIE GIFFORD & COinvestment adviser | 1.3M | 4.3% | 2025-12-31 |
13F holders
Tracked managers holding AEHR at their latest 13F. JSON6 of the 30 tracked managers held AEHR at their latest 13F, $287.8M in total at quarter-end prices. D. E. Shaw & Co. is the largest at $113.1M (0.1% of its portfolio) as of 2026-06-30. Over the prior quarter 6 added shares and 0 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| D. E. Shaw & Co. | 2026-06-30 | 1.2M | $113.1M | 0.05% | +836K |
| Two Sigma Investments | 2026-06-30 | 1.2M | $111.9M | 0.08% | +950K |
| Citadel Advisors | 2026-06-30 | 401K | $38.5M | 0.00% | +259K |
| Renaissance Technologies | 2026-06-30 | 135K | $12.9M | 0.02% | new |
| Millennium Management | 2026-06-30 | 109K | $10.5M | 0.00% | +13K |
| AQR Capital Management | 2026-06-30 | 10K | $930K | 0.00% | +538 |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
Financials
SEC XBRL, as filed. JSONIn Q4 FY 2026 (quarter ended 2026-05-29) Aehr Test Systems reported revenue of $18.8M, up 33.7% from the same quarter a year earlier, and net income of $1.4M. In FY 2026 it generated -$3.3M of operating cash flow.
- Cash
- $116.4M
- Equity
- $219.5M
- Total assets
- $246.7M
- Shares outstanding
- 32,620,450
Quarterly, last 8 quarters
| Quarter | Period end | Revenue | Net income | Margin | Diluted EPS |
|---|---|---|---|---|---|
| Q4 FY 2026derived | 2026-05-29 | $18.8M | $1.4M | 7.4% | n/a |
| Q3 FY 2026 | 2026-02-27 | $10.3M | -$3.2M | -31.1% | -0.10 |
| Q2 FY 2026 | 2025-11-28 | $9.9M | -$3.2M | -32.7% | -0.11 |
| Q1 FY 2026 | 2025-08-29 | $11.0M | -$2.1M | -19.0% | -0.07 |
| Q4 FY 2025derived | 2025-05-30 | $14.1M | -$2.9M | -20.6% | n/a |
| Q3 FY 2025 | 2025-02-28 | $18.3M | -$643K | -3.5% | -0.02 |
| Q2 FY 2025 | 2024-11-29 | $13.5M | -$1.0M | -7.6% | -0.03 |
| Q1 FY 2025 | 2024-08-31 | $13.1M | $660K | 5.0% | 0.02 |
Fiscal years, with buybacks and dividends
| Fiscal year | Ends | Revenue | Net income | Operating cash flow | Capex | Buybacks | Dividends |
|---|---|---|---|---|---|---|---|
| FY 2026 | 2026-05-29 | $50.0M | -$7.1M | -$3.3M | $2.1M | n/a | n/a |
| FY 2025 | 2025-05-30 | $59.0M | -$3.9M | -$7.4M | $5.0M | n/a | n/a |
| FY 2024 | 2024-05-31 | $66.2M | $33.2M | $1.8M | $749K | n/a | n/a |
| FY 2023 | 2023-05-31 | $65.0M | $14.6M | $10.0M | $1.4M | n/a | n/a |
| FY 2022 | 2022-05-31 | $50.8M | $9.4M | $1.5M | $416K | n/a | n/a |
Quarters are the three-month figures the company reports; a fourth quarter marked derived is the fiscal year less the three reported quarters, since companies report it only inside the 10-K. Fiscal years are the annual figures. Buybacks are the cash the company paid to repurchase its common stock in the year, not the amount authorized. Balance sheet lines are as of 2026-05-29; shares outstanding as of 2026-07-20 from the cover page.
What this page is
Aehr Test Systems in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Aehr Test Systems (AEHR), SEC CIK 1040470, listed on Nasdaq, classified by the SEC as instruments for meas & testing of electricity & elec signals. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-10-28.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-09-30.JSON and CSV
- Planned sales
- SEC EDGAR Form 144Source: SEC.New notices appear shortly after the SEC posts them; a notice is filed on or before the sale. Latest 2026-08-17.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-14.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Financials
- SEC EDGAR 10-K and 10-Q filingsSource: SEC.Weekly; values are as filed in the 10-Q and 10-K. Latest 2026-05-29.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-07-14.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-27.JSON and CSV
- Company record
- EDGAR filing index for CIK 1040470Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
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Datasets
Frequently Asked Questions
How much of AEHR is sold short?
5,622,469 shares were held short at the 2026-10-15 settlement, 2.0 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is AEHR's daily short volume?
On 2026-10-28, 479,997 of the 782,632 AEHR shares reported to FINRA were sold short, 61.3% of the day's reported volume. Short volume is a flow for one day, not a position.
Does AEHR have fails to deliver?
The SEC's latest file shows 369 AEHR shares failed to deliver at settlement 2026-09-30. Fails are reported per settlement date and published twice a month with a lag.
Are AEHR insiders buying or selling?
Insiders at AEHR reported 18 open-market sells worth $17.3M in the last 90 days and no open-market buys. Latest filing: Erickson Gayn (President and CEO) on 2026-10-27.
Have AEHR insiders filed to sell?
50 Form 144 notices on file for AEHR worth $53.3M at the prices reported; 13 in the last 90 days worth $17.3M. Latest: ROGERS VERNON filed on 2026-08-17 to sell 3,994 shares ($574K) from 2026-08-17.
Who owns 5% or more of AEHR?
1 holder reports 5% or more of AEHR in its latest filing, on Schedule 13G (passive). The holder is JANE STREET GROUP, LLC at 5.1% of the class (1,648,523 shares), filed 2026-07-29 for an event on 2026-07-24.
What did AEHR report last quarter?
In Q4 FY 2026 (quarter ended 2026-05-29) Aehr Test Systems reported revenue of $18.8M, up 33.7% from the same quarter a year earlier, and net income of $1.4M. In FY 2026 it generated -$3.3M of operating cash flow.
Which tracked 13F managers own AEHR?
6 of the 30 tracked 13F managers held AEHR shares at their latest filing, $287.8M in all. The largest: D. E. Shaw & Co. (1.2M shares, $113.1M), Two Sigma Investments (1.2M shares, $111.9M), Ken Griffin's Citadel Advisors (401K shares, $38.5M), Renaissance Technologies (135K shares, $12.9M), Izzy Englander's Millennium Management (109K shares, $10.5M), Cliff Asness's AQR Capital Management (10K shares, $930K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.