Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2025-09-17 Sale | 2025-09-19 4:30 pm | ACM Research Inc. | ACMR | Liu Tracy Director | 15,000 | $33 | $495,000 | 170,772 (Direct) | View |
| 2025-09-18 Sale | 2025-09-19 4:30 pm | ACM Research Inc. | ACMR | Wang Jian See remarks | 30,000 | $35 | $1,050,000 | 253,158 (Direct) | View |
| 2025-09-18 Sale | 2025-09-19 4:30 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 10,000 | $35 | $350,000 | 156,252 (Direct) | View |
| 2025-09-03 Sale | 2025-09-05 4:30 pm | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 130,000 | $26.61 | $3,459,787 | 3,158,552 (Indirect Direct) | View |
| 2025-08-22 Sale | 2025-08-26 4:30 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 11,152 | $30 | $334,560 | 166,252 (Direct) | View |
| 2025-08-22 Sale | 2025-08-26 4:30 pm | ACM Research Inc. | ACMR | Wang Jian See remarks | 60,000 | $31 | $1,860,000 | 343,158 (Direct) | View |
| 2025-07-15 Sale | 2025-07-17 4:30 pm | ACM Research Inc. | ACMR | Liu Tracy Director | 15,000 | $30 | $450,000 | 185,772 (Direct) | View |
| 2025-07-07 Sale | 2025-07-09 4:30 pm | ACM Research Inc. | ACMR | Feng Lisa See remarks | 15,000 | $28 | $420,000 | 80,001 (Direct) | View |
| 2025-06-24 Sale | 2025-06-26 4:30 pm | ACM Research Inc. | ACMR | Feng Lisa See remarks | 15,000 | $26 | $390,000 | 95,001 (Direct) | View |
| 2025-05-21 Sale | 2025-05-23 4:35 pm | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 130,000 | $23.15 | $3,009,804 | 3,418,552 (Indirect Direct) | View |
| 2025-05-14 Sale | 2025-05-16 4:30 pm | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 15,000 | $25.22 | $378,300 | 900 (Direct) | View |
| 2025-03-17 Sale | 2025-03-19 9:30 pm | ACM Research Inc. | ACMR | Hu Chenming Director | 163,308 | $30 | $4,899,240 | 100,002 (Direct) | View |
| 2025-03-14 Sale | 2025-03-18 9:30 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 9,518 | $29 | $275,976 | 855,090 (Indirect Direct) | View |
| 2025-03-12 Sale | 2025-03-14 9:30 pm | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 15,000 | $27.42 | $411,300 | 15,900 (Direct) | View |
| 2025-03-11 Sale | 2025-03-13 9:30 pm | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 131,250 | $27.02 | $3,546,554 | 1,618,548 (Indirect Direct) | View |
| 2025-03-10 Sale | 2025-03-12 4:30 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 15,001 | $26.54 | $398,127 | 864,608 (Indirect Direct) | View |
| 2025-02-06 Sale | 2025-02-10 4:32 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 22,598 | $23 | $519,754 | 267,404 (Direct) | View |
| 2025-02-06 Sale | 2025-02-10 4:30 pm | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 15,000 | $22 | $330,000 | 30,900 (Direct) | View |
| 2024-11-29 Sale | 2024-12-03 4:32 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 19,058 | $17.43 | $332,181 | 855,090 (Indirect Direct) | View |
| 2024-11-29 Sale | 2024-12-03 4:30 pm | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 56,250 | $17.44 | $981,000 | 1,543,846 (Indirect Direct) | View |
| 2024-11-26 Sale | 2024-11-29 4:30 pm | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 56,250 | $17.89 | $1,006,087 | 1,600,096 (Indirect Direct) | View |
| 2024-11-22 Sale | 2024-11-26 4:30 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 15,000 | $19.12 | $286,800 | 874,148 (Indirect Direct) | View |
| 2024-11-22 Sale | 2024-11-26 4:30 pm | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 56,250 | $19.08 | $1,073,250 | 1,656,346 (Indirect Direct) | View |
| 2024-10-04 Sale | 2024-10-08 9:37 pm | ACM Research Inc. | ACMR | Shanghai Science & Technology Venture Capital (Group) Co. Ltd. Shanghai Pudong Science & Technology Investment Group Co. Ltd. Possible member of 10% group 10% Owner | 1,065,396 | $22.08 | $23,519,660 | 5,697,238 (Indirect Direct) | View |
| 2024-10-04 Sale | 2024-10-08 9:30 pm | ACM Research Inc. | ACMR | Xing Xiao Director | 1,065,396 | $22.07 | $23,516,561 | 2,338,510 (Indirect) | View |
| 2024-10-04 Sale | 2024-10-08 4:31 pm | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 16,516 | $22 | $363,352 | 45,900 (Direct) | View |
| 2024-10-01 Sale | 2024-10-03 9:58 pm | ACM Research Inc. | ACMR | Shanghai Science & Technology Venture Capital (Group) Co. Ltd. Shanghai Pudong Science & Technology Investment Group Co. Ltd. Possible member of 10% group 10% Owner | 34,604 | $20.05 | $693,921 | 6,762,634 (Indirect Direct) | View |
| 2024-10-01 Sale | 2024-10-03 4:30 pm | ACM Research Inc. | ACMR | Xing Xiao Director | 34,604 | $20.05 | $693,921 | 3,403,906 (Indirect) | View |
| 2024-08-29 Sale | 2024-09-03 4:30 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 19,097 | $18.08 | $345,274 | 855,090 (Indirect Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2025-09-08 Exercise | 2025-09-30 9:33 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 130,000 | $1 | 2,358,550 (Direct) | View |
| 2025-09-08 Exercise | 2025-09-30 9:33 pm | N/A 2026-12-27 | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 130,000 | $0 | 2,358,550 (Direct) | View |
| 2025-09-17 Exercise | 2025-09-19 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Liu Tracy Director | 15,000 | $1 | 170,772 (Direct) | View |
| 2025-09-17 Exercise | 2025-09-19 4:30 pm | N/A 2026-12-27 | ACM Research Inc. | ACMR | Liu Tracy Director | 15,000 | $0 | 170,772 (Direct) | View |
| 2025-09-18 Exercise | 2025-09-19 4:30 pm | N/A 2029-04-22 | ACM Research Inc. | ACMR | Wang Jian See remarks | 30,000 | $0 | 253,158 (Direct) | View |
| 2025-09-18 Exercise | 2025-09-19 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang Jian See remarks | 30,000 | $5.6 | 253,158 (Direct) | View |
| 2025-09-18 Exercise | 2025-09-19 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 10,000 | $13.89 | 156,252 (Direct) | View |
| 2025-09-18 Exercise | 2025-09-19 4:30 pm | N/A 2033-08-09 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 10,000 | $0 | 156,252 (Direct) | View |
| 2025-09-03 Exercise | 2025-09-05 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 130,000 | $1 | 3,158,552 (Direct) | View |
| 2025-09-03 Exercise | 2025-09-05 4:30 pm | N/A 2026-12-27 | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 130,000 | $0 | 3,158,552 (Direct) | View |
| 2025-08-22 Exercise | 2025-08-26 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 11,152 | $13.89 | 166,252 (Direct) | View |
| 2025-08-22 Exercise | 2025-08-26 4:30 pm | N/A 2033-08-09 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 11,152 | $0 | 166,252 (Direct) | View |
| 2025-08-22 Exercise | 2025-08-26 4:30 pm | N/A 2029-04-22 | ACM Research Inc. | ACMR | Wang Jian See remarks | 60,000 | $0 | 343,158 (Direct) | View |
| 2025-08-22 Exercise | 2025-08-26 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang Jian See remarks | 60,000 | $5.6 | 343,158 (Direct) | View |
| 2025-08-12 Option Award | 2025-08-14 4:30 pm | N/A 2035-08-11 | ACM Research Inc. | ACMR | Pappis Charles C Director | 20,000 | $0 | 20,000 (Direct) | View |
| 2025-08-12 Option Award | 2025-08-14 4:30 pm | N/A 2035-08-11 | ACM Research Inc. | ACMR | Dun Haiping Director | 20,000 | $0 | 20,000 (Direct) | View |
| 2025-08-12 Option Award | 2025-08-14 4:30 pm | N/A 2035-08-11 | ACM Research Inc. | ACMR | Liu Tracy Director | 20,000 | $0 | 20,000 (Direct) | View |
| 2025-07-15 Exercise | 2025-07-17 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Liu Tracy Director | 15,000 | $1 | 185,772 (Direct) | View |
| 2025-07-15 Exercise | 2025-07-17 4:30 pm | N/A 2026-12-27 | ACM Research Inc. | ACMR | Liu Tracy Director | 15,000 | $0 | 185,772 (Direct) | View |
| 2025-07-07 Exercise | 2025-07-09 4:30 pm | N/A 2029-04-22 | ACM Research Inc. | ACMR | Feng Lisa See remarks | 15,000 | $0 | 80,001 (Direct) | View |
| 2025-07-07 Exercise | 2025-07-09 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Feng Lisa See remarks | 15,000 | $5.6 | 80,001 (Direct) | View |
| 2025-06-24 Exercise | 2025-06-26 4:30 pm | N/A 2029-04-22 | ACM Research Inc. | ACMR | Feng Lisa See remarks | 15,000 | $0 | 95,001 (Direct) | View |
| 2025-06-24 Exercise | 2025-06-26 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Feng Lisa See remarks | 15,000 | $5.6 | 95,001 (Direct) | View |
| 2025-05-21 Exercise | 2025-05-23 4:35 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 130,000 | $1 | 3,418,552 (Direct) | View |
| 2025-05-21 Exercise | 2025-05-23 4:35 pm | N/A 2026-12-27 | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 130,000 | $0 | 3,418,552 (Direct) | View |
| 2025-03-15 Option Award | 2025-05-21 9:32 pm | N/A 2035-03-14 | ACM Research Inc. | ACMR | Pappis Charles C Director | 10,000 | $0 | 10,000 (Direct) | View |
| 2025-05-14 Exercise | 2025-05-16 4:30 pm | N/A 2029-04-22 | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 15,000 | $0 | 900 (Direct) | View |
| 2025-05-14 Exercise | 2025-05-16 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 15,000 | $5.6 | 900 (Direct) | View |
| 2025-03-12 Exercise | 2025-03-14 9:30 pm | N/A 2029-04-22 | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 15,000 | $0 | 15,900 (Direct) | View |
| 2025-03-12 Exercise | 2025-03-14 9:30 pm | N/A N/A | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 15,000 | $5.6 | 15,900 (Direct) | View |
| 2025-03-03 Exercise | 2025-03-05 4:30 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Dun Haiping Director | 25,001 | $0 | 879,609 (Direct) | View |
| 2025-03-03 Exercise | 2025-03-05 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 25,001 | $0.5 | 879,609 (Direct) | View |
| 2025-03-03 Tax Withholding | 2025-03-05 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 482 | $25.94 | 879,609 (Direct) | View |
| 2025-03-03 Exercise | 2025-03-05 4:30 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 210,000 | $0 | 1,749,798 (Direct) | View |
| 2025-03-03 Exercise | 2025-03-05 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 210,000 | $0.5 | 1,749,798 (Direct) | View |
| 2025-03-03 Tax Withholding | 2025-03-05 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 4,048 | $25.94 | 1,749,798 (Direct) | View |
| 2025-02-06 Exercise | 2025-02-10 4:32 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 22,598 | $13.89 | 267,404 (Direct) | View |
| 2025-02-06 Exercise | 2025-02-10 4:32 pm | N/A 2033-08-09 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 22,598 | $0 | 267,404 (Direct) | View |
| 2025-02-06 Exercise | 2025-02-10 4:30 pm | N/A 2029-04-22 | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 15,000 | $0 | 30,900 (Direct) | View |
| 2025-02-06 Exercise | 2025-02-10 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 15,000 | $5.6 | 30,900 (Direct) | View |
| 2024-11-14 Exercise | 2024-11-18 4:32 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Dun Haiping Director | 35,000 | $0 | 914,149 (Direct) | View |
| 2024-11-14 Tax Withholding | 2024-11-18 4:32 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 942 | $18.59 | 914,149 (Direct) | View |
| 2024-11-14 Exercise | 2024-11-18 4:32 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 35,000 | $0.5 | 914,149 (Direct) | View |
| 2024-11-14 Exercise | 2024-11-18 4:30 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 270,000 | $0 | 1,922,596 (Direct) | View |
| 2024-11-14 Tax Withholding | 2024-11-18 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 7,262 | $18.59 | 1,922,596 (Direct) | View |
| 2024-11-14 Exercise | 2024-11-18 4:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 270,000 | $0.5 | 1,922,596 (Direct) | View |
| 2024-10-04 Exercise | 2024-10-08 4:31 pm | N/A 2029-04-22 | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 16,516 | $0 | 45,900 (Direct) | View |
| 2024-10-04 Exercise | 2024-10-08 4:31 pm | N/A N/A | ACM Research Inc. | ACMR | McKechnie Mark See Remarks | 16,516 | $5.6 | 45,900 (Direct) | View |
| 2024-09-21 Option Award | 2024-09-24 4:30 pm | N/A 2030-07-27 | ACM Research Inc. | ACMR | Chen Fuping See remarks | 30,000 | $0 | 30,000 (Direct) | View |