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 |
| 2026-06-04 Sale | 2026-06-05 9:00 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 18,750 | $84.58 | $1,585,923 | 180,401 (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 |
| 2025-08-22 Sale | 2025-08-26 4:30 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 11,152 | $30 | $334,560 | 166,252 (Direct) | View |
| 2025-02-06 Sale | 2025-02-10 4:32 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 22,598 | $23 | $519,754 | 267,404 (Direct) | View |
| 2024-03-13 Sale | 2024-03-15 9:32 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 10,000 | $28.49 | $284,878 | 100,002 (Direct) | View |
| 2023-11-13 Sale | 2023-11-15 4:15 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 26,000 | $16.79 | $436,540 | 110,002 (Direct) | View |
| 2023-06-06 Sale | 2023-06-08 9:49 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 39,000 | $10 | $390,000 | 136,002 (Direct) | View |
| 2022-08-18 Sale | 2022-08-22 8:00 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 10,000 | $17.5 | $175,000 | 110,002 (Direct) | View |
| 2022-08-16 Sale | 2022-08-18 9:30 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 20,000 | $18.21 | $364,196 | 195,002 (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 |
| 2026-06-04 Exercise | 2026-06-05 9:00 pm | N/A 2033-08-09 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 18,750 | $0 | 180,401 (Direct) | View |
| 2026-06-04 Exercise | 2026-06-05 9:00 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 18,750 | $13.89 | 180,401 (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 |
| 2025-09-18 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 |
| 2025-08-22 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 N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 11,152 | $13.89 | 166,252 (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 4:32 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 22,598 | $13.89 | 267,404 (Direct) | View |
| 2023-11-13 Exercise | 2023-11-15 4:15 pm | N/A 2029-08-03 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 26,000 | $0 | 110,002 (Direct) | View |
| 2023-11-13 Exercise | 2023-11-15 4:15 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 13,500 | $5.33 | 110,002 (Direct) | View |
| 2023-11-13 Exercise | 2023-11-15 4:15 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 12,500 | $4.62 | 110,002 (Direct) | View |
| 2023-08-10 Option Award(A) | 2023-08-21 9:18 pm | N/A 2033-08-09 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 100,000 | $0 | 100,000 (Direct) | View |
| 2023-08-10 Option Award | 2023-08-14 5:31 pm | N/A 2033-08-09 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 100,000 | $0 | 100,000 (Direct) | View |
| 2022-06-06 Exercise | 2023-06-08 9:49 pm | N/A 2028-07-31 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 39,000 | $0 | 136,002 (Direct) | View |
| 2023-06-06 Exercise | 2023-06-08 9:49 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 16,500 | $5.33 | 136,002 (Direct) | View |
| 2023-06-06 Exercise | 2023-06-08 9:49 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 22,500 | $4.62 | 136,002 (Direct) | View |
| 2022-08-16 Exercise | 2022-08-18 9:30 pm | N/A 2028-07-31 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 10,000 | $0 | 195,002 (Direct) | View |
| 2022-08-16 Exercise | 2022-08-18 9:30 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 10,000 | $4.62 | 195,002 (Direct) | View |