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 |
| 2024-03-14 Sale | 2024-03-15 9:32 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 19,434 | $27.7 | $538,376 | 855,090 (Direct) | View |
| 2024-03-08 Sale | 2024-03-12 9:30 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 15,000 | $30.36 | $455,400 | 874,524 (Direct) | View |
| 2023-11-29 Sale | 2023-12-01 4:15 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 18,984 | $17.25 | $327,474 | 855,090 (Direct) | View |
| 2023-11-22 Sale | 2023-11-27 4:24 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 15,000 | $17.66 | $264,900 | 874,074 (Direct) | View |
| 2023-08-22 Sale | 2023-08-24 8:13 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 32,098 | $13.85 | $444,557 | 855,090 (Direct) | View |
| 2023-06-01 Sale | 2023-06-05 6:26 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $10 | $375,000 | 887,188 (Direct) | View |
| 2023-03-16 Sale | 2023-03-20 8:55 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $12.06 | $452,250 | 889,116 (Direct) | View |
| 2022-11-30 Sale | 2022-12-02 5:31 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 35,327 | $8.43 | $297,807 | 890,620 (Direct) | View |
| 2022-08-22 Sale | 2022-08-24 9:01 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 36,537 | $16.1 | $588,246 | 855,090 (Direct) | View |
| 2022-08-15 Sale | 2022-08-17 6:00 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 36,519 | $19.28 | $704,086 | 1,241,628 (Direct) | View |
| 2022-05-27 Sale | 2022-05-31 9:03 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 36,150 | $15 | $542,250 | 855,090 (Direct) | View |
| 2022-03-09 Sale | 2022-03-11 5:08 pm | ACM Research Inc. | ACMR | Dun Haiping Director | 12,269 | $82.09 | $1,007,102 | 297,530 (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 |
| 2024-03-01 Exercise | 2024-03-05 9:31 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Dun Haiping Director | 35,000 | $0 | 1,019,525 (Direct) | View |
| 2024-03-01 Tax Withholding | 2024-03-05 9:31 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 566 | $30.92 | 1,019,525 (Direct) | View |
| 2024-03-01 Exercise | 2024-03-05 9:31 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 35,000 | $0.5 | 1,019,525 (Direct) | View |
| 2023-11-14 Exercise | 2023-11-16 4:15 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Dun Haiping Director | 35,000 | $0 | 1,054,075 (Direct) | View |
| 2023-11-14 Exercise | 2023-11-16 4:15 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 35,000 | $0.5 | 1,054,075 (Direct) | View |
| 2023-11-14 Tax Withholding | 2023-11-16 4:15 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 1,016 | $17.23 | 1,054,075 (Direct) | View |
| 2023-08-10 Option Award(A) | 2023-08-21 9:19 pm | N/A 2033-08-09 | ACM Research Inc. | ACMR | Dun Haiping Director | 54,000 | $0 | 54,000 (Direct) | View |
| 2023-08-10 Option Award | 2023-08-14 5:31 pm | N/A 2033-08-09 | ACM Research Inc. | ACMR | Dun Haiping Director | 54,000 | $0 | 54,000 (Direct) | View |
| 2023-05-22 Tax Withholding | 2023-05-24 6:33 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 1,928 | $9.73 | 1,124,689 (Direct) | View |
| 2023-05-22 Exercise | 2023-05-24 6:33 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0 | 1,124,689 (Direct) | View |
| 2023-05-22 Exercise | 2023-05-24 6:33 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0.5 | 1,124,689 (Direct) | View |
| 2023-03-09 Exercise | 2023-03-13 9:02 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0 | 1,164,117 (Direct) | View |
| 2023-03-09 Exercise | 2023-03-13 9:02 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0.5 | 1,164,117 (Direct) | View |
| 2023-03-09 Tax Withholding | 2023-03-13 9:02 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 1,504 | $12.47 | 1,164,117 (Direct) | View |
| 2022-11-22 Tax Withholding | 2022-11-25 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 2,173 | $8.63 | 1,200,948 (Direct) | View |
| 2022-11-22 Exercise | 2022-11-25 5:30 pm | N/A 2025-05-01 | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0 | 1,200,948 (Direct) | View |
| 2022-11-22 Exercise | 2022-11-25 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0.5 | 1,200,948 (Direct) | View |
| 2022-11-14 Exercise | 2022-11-15 9:03 pm | N/A 2025-05-01 | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0 | 1,203,121 (Direct) | View |
| 2022-11-14 Exercise | 2022-11-15 9:03 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0.5 | 1,203,121 (Direct) | View |
| 2022-11-14 Tax Withholding | 2022-11-15 9:03 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 1,970 | $9.52 | 1,203,121 (Direct) | View |
| 2022-08-15 Exercise | 2022-08-17 6:00 pm | N/A 2025-05-01 | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0 | 1,241,628 (Direct) | View |
| 2022-08-15 Exercise | 2022-08-17 6:00 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0.5 | 1,241,628 (Direct) | View |
| 2022-08-15 Tax Withholding | 2022-08-17 6:00 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 963 | $19.49 | 1,241,628 (Direct) | View |
| 2022-08-08 Exercise | 2022-08-10 5:00 pm | N/A 2025-05-01 | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0 | 1,279,110 (Direct) | View |
| 2022-08-08 Exercise | 2022-08-10 5:00 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0.5 | 1,279,110 (Direct) | View |
| 2022-08-08 Tax Withholding | 2022-08-10 5:00 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 981 | $19.13 | 1,279,110 (Direct) | View |
| 2022-06-30 Option Award | 2022-07-05 5:31 pm | N/A 2032-06-29 | ACM Research Inc. | ACMR | Dun Haiping Director | 24,000 | $0 | 24,000 (Direct) | View |
| 2022-05-18 Exercise | 2022-05-20 9:50 pm | N/A 2025-05-01 | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0 | 1,316,241 (Direct) | View |
| 2022-05-18 Exercise | 2022-05-20 9:50 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 37,500 | $0.5 | 1,316,241 (Direct) | View |
| 2022-05-18 Tax Withholding | 2022-05-20 9:50 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 1,350 | $13.89 | 1,316,241 (Direct) | View |
| 2022-03-09 Exercise | 2022-03-11 5:08 pm | N/A 2025-05-01 | ACM Research Inc. | ACMR | Dun Haiping Director | 12,269 | $0 | 297,530 (Direct) | View |
| 2022-03-09 Exercise | 2022-03-11 5:08 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 12,269 | $1.5 | 297,530 (Direct) | View |
| 2022-03-02 Exercise | 2022-03-04 5:26 pm | N/A 2025-05-01 | ACM Research Inc. | ACMR | Dun Haiping Director | 12,500 | $0 | 451,466 (Direct) | View |
| 2022-03-02 Exercise | 2022-03-04 5:26 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 12,500 | $1.5 | 451,466 (Direct) | View |
| 2022-03-02 Tax Withholding | 2022-03-04 5:26 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 231 | $81.46 | 451,466 (Direct) | View |
| 2021-02-22 Option Award(A) | 2021-03-05 9:46 pm | N/A 2031-02-21 | ACM Research Inc. | ACMR | Dun Haiping Director | 5,000 | $0 | 5,000 (Direct) | View |
| 2021-02-22 Option Award | 2021-03-03 5:30 pm | N/A 2031-02-21 | ACM Research Inc. | ACMR | Dun Haiping Director | 5,000 | $0 | 5,000 (Direct) | View |
| 2020-03-20 Option Award | 2020-03-24 9:15 pm | N/A 2030-03-19 | ACM Research Inc. | ACMR | Dun Haiping Director | 10,000 | $0 | 10,000 (Direct) | View |
| 2019-08-23 Disposition | 2019-08-27 8:41 pm | N/A N/A | ACM Research Inc. | ACMR | Dun Haiping Director | 28,661 | $13.2 | 285,030 (Direct) | View |
| 2019-04-23 Option Award | 2019-04-25 8:04 pm | N/A 2029-04-22 | ACM Research Inc. | ACMR | Dun Haiping Director | 20,000 | $0 | 20,000 (Direct) | View |