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 |
| 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 |
| 2021-04-08 Sale | 2021-04-12 5:30 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 18,111 | $87.2 | $1,579,237 | 58,334 (Direct) | View |
| 2021-03-15 Sale | 2021-03-16 5:31 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 20,000 | $92.68 | $1,853,600 | 93,334 (Direct) | View |
| 2020-11-12 Sale | 2020-11-16 5:30 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 19,670 | $88.35 | $1,737,937 | 43,334 (Direct) | View |
| 2020-09-10 Sale | 2020-09-14 8:30 pm | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 9,941 | $63.71 | $633,315 | 48,275 (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 |
| 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 |
| 2023-11-13 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 |
| 2023-08-10 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 |
| 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 |
| 2022-06-06 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 |
| 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 |
| 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 |
| 2021-04-08 Exercise | 2021-04-12 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 5,000 | $13.85 | 58,334 (Direct) | View |
| 2021-04-08 Exercise | 2021-04-12 5:30 pm | N/A 2028-07-31 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 5,000 | $0 | 58,334 (Direct) | View |
| 2021-04-05 Exercise | 2021-04-05 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 13,334 | $1.5 | 56,445 (Direct) | View |
| 2021-04-05 Exercise | 2021-04-05 5:30 pm | N/A 2025-05-01 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 13,334 | $0 | 56,445 (Direct) | View |
| 2021-04-05 Tax Withholding | 2021-04-05 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 223 | $90.08 | 56,445 (Direct) | View |
| 2021-03-15 Exercise | 2021-03-16 5:31 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 20,000 | $13.85 | 93,334 (Direct) | View |
| 2021-03-15 Exercise | 2021-03-16 5:31 pm | N/A 2028-07-31 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 20,000 | $0 | 93,334 (Direct) | View |
| 2020-11-05 Exercise | 2020-11-09 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 20,000 | $1.5 | 76,338 (Direct) | View |
| 2020-11-05 Exercise | 2020-11-09 5:30 pm | N/A 2025-05-01 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 20,000 | $0 | 76,338 (Direct) | View |
| 2020-11-05 Tax Withholding | 2020-11-09 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 330 | $91 | 76,338 (Direct) | View |
| 2020-09-10 Exercise | 2020-09-14 8:30 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 9,941 | $0.75 | 48,275 (Direct) | View |
| 2020-09-10 Exercise | 2020-09-14 8:30 pm | N/A 2021-05-01 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 9,941 | $0 | 48,275 (Direct) | View |
| 2019-09-30 Disposition(A) | 2019-10-02 4:35 pm | N/A 2021-05-01 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 13,393 | $12.45 | 53,275 (Direct) | View |
| 2019-08-23 Disposition | 2019-08-27 8:39 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 13,393 | $13.2 | 29,941 (Direct) | View |
| 2019-08-04 Option Award | 2019-08-06 5:14 pm | N/A 2029-08-03 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 10,000 | $0 | 10,000 (Direct) | View |
| 2019-05-09 Exercise | 2019-05-10 5:25 pm | N/A N/A | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 10,000 | $0.75 | 66,668 (Direct) | View |
| 2019-05-09 Exercise | 2019-05-10 5:25 pm | N/A 2021-05-01 | ACM Research Inc. | ACMR | Cheav Sotheara See remarks | 10,000 | $0 | 66,668 (Direct) | View |