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 | Wang David H See Remarks 10% Owner | 87,089 | $27.62 | $2,405,050 | 1,449,858 (Indirect Direct) | View |
| 2024-03-08 Sale | 2024-03-12 9:30 pm | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 90,000 | $30.36 | $2,731,950 | 1,536,947 (Indirect Direct) | View |
| 2023-11-29 Sale | 2023-12-01 4:15 pm | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 84,776 | $17.14 | $1,452,663 | 1,449,858 (Indirect Direct) | View |
| 2023-11-22 Sale | 2023-11-27 4:30 pm | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 90,000 | $17.68 | $1,590,750 | 1,534,634 (Indirect Direct) | View |
| 2023-09-12 Sale | 2023-09-14 5:00 pm | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 175,116 | $17.87 | $3,130,016 | 1,449,858 (Indirect Direct) | View |
| 2021-03-18 Sale | 2021-03-22 5:30 pm | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 99,228 | $91.24 | $9,053,595 | 483,286 (Indirect Direct) | View |
| 2020-12-03 Sale | 2020-12-07 5:30 pm | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 98,983 | $79.83 | $7,901,732 | 483,286 (Indirect Direct) | View |
| 2020-09-03 Sale | 2020-09-04 6:35 pm | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 69,453 | $81.36 | $5,650,796 | 483,286 (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 |
| 2024-03-01 Tax Withholding | 2024-03-05 9:33 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 2,911 | $30.92 | 2,286,947 (Direct) | View |
| 2024-03-01 Exercise | 2024-03-05 9:33 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 180,000 | $0.5 | 2,286,947 (Direct) | View |
| 2024-03-01 Exercise | 2024-03-05 9:33 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 180,000 | $0 | 2,286,947 (Direct) | View |
| 2023-11-14 Tax Withholding | 2023-11-16 4:15 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 5,224 | $17.23 | 2,464,634 (Direct) | View |
| 2023-11-14 Exercise | 2023-11-16 4:15 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 180,000 | $0.5 | 2,464,634 (Direct) | View |
| 2023-11-14 Exercise | 2023-11-16 4:15 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 180,000 | $0 | 2,464,634 (Direct) | View |
| 2023-09-04 Exercise | 2023-09-06 9:40 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 180,000 | $0.5 | 2,644,974 (Direct) | View |
| 2023-09-04 Tax Withholding | 2023-09-06 9:40 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 4,884 | $18.43 | 2,644,974 (Direct) | View |
| 2023-09-04 Exercise | 2023-09-06 9:40 pm | N/A 2025-04-30 | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 180,000 | $0 | 2,644,974 (Direct) | View |
| 2023-08-10 Option Award(A) | 2023-08-21 9:19 pm | N/A 2033-08-09 | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 1,080,000 | $0 | 1,080,000 (Direct) | View |
| 2023-08-10 Option Award | 2023-08-14 5:30 pm | N/A 2033-08-09 | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 1,080,000 | $0 | 1,080,000 (Direct) | View |
| 2021-03-12 Tax Withholding | 2021-03-16 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 773 | $97.05 | 582,514 (Direct) | View |
| 2021-03-12 Exercise | 2021-03-16 5:30 pm | N/A 2021-05-01 | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 100,001 | $0 | 582,514 (Direct) | View |
| 2021-03-12 Exercise | 2021-03-16 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 100,001 | $0.75 | 582,514 (Direct) | View |
| 2020-11-25 Tax Withholding | 2020-11-27 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 1,017 | $73.76 | 682,270 (Direct) | View |
| 2020-11-25 Exercise | 2020-11-27 5:30 pm | N/A 2021-05-01 | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 100,000 | $0 | 682,270 (Direct) | View |
| 2020-11-25 Exercise | 2020-11-27 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 100,000 | $0.75 | 682,270 (Direct) | View |
| 2020-08-27 Exercise | 2020-08-31 5:30 pm | N/A 2021-05-01 | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 70,000 | $0 | 586,073 (Direct) | View |
| 2020-08-27 Tax Withholding | 2020-08-31 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 547 | $96.05 | 586,073 (Direct) | View |
| 2020-08-27 Exercise | 2020-08-31 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 70,000 | $0.75 | 586,073 (Direct) | View |
| 2020-08-05 Option Award | 2020-08-07 7:03 pm | N/A 2030-03-19 | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 181,799 | $0 | 181,799 (Direct) | View |
| 2020-05-21 Conversion | 2020-05-26 5:30 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 33,334 | $0 | 1,872,222 (Indirect) | View |
| 2019-08-23 Disposition | 2019-08-27 8:44 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See remarks 10% Owner | 28,661 | $13.2 | 449,952 (Direct) | View |
| 2019-08-20 Exercise | 2019-08-21 6:18 pm | N/A 2021-05-01 | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 30,000 | $0 | 581,947 (Direct) | View |
| 2019-08-20 Exercise | 2019-08-21 6:18 pm | N/A N/A | ACM Research Inc. | ACMR | Wang David H See Remarks 10% Owner | 30,000 | $0.75 | 581,947 (Direct) | View |