The following table details the insider trading activities
(stock purchases, stock sales, and stock option exercises) of Wang David H since 2018.
This trader's CIK number is 1721580.
At the time of last reporting, Wang David H was the See Remarks of Acm Research, Inc.. (stock ticker symbol ACMR).
Also see all insider trading activities at Acm Research, Inc..
| Insider Buying | Insider Sales | Option Exercises | |||||
|---|---|---|---|---|---|---|---|
| Year | Symbol | Shares | Value | Shares | Value | Shares | Value |
| 2025 | ACMR | 0 | $0 | 261,250 | $6,578,137 | 340,000 | $235,000 |
| 2024 | ACMR | 0 | $0 | 521,929 | $12,235,750 | 360,000 | $180,000 |
| 2023 | ACMR | 0 | $0 | 349,892 | $6,201,986 | 180,000 | $90,000 |
| 2021 | ACMR | 0 | $0 | 99,228 | $9,053,595 | 100,001 | $75,000 |
| 2020 | ACMR | 0 | $0 | 168,436 | $13,552,527 | 170,000 | $127,500 |
| 2019 | ACMR | 0 | $0 | 0 | $0 | 30,000 | $22,500 |
| 2018 | ACMR | 0 | $0 | 0 | $0 | 15,279 | $45,837 |
| Trade Date | Symbol | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-05-21 | ACMR | Option Ex | 70,000 | 1.00 | 70,000 |
| 2025-05-22 | ACMR | Option Ex | 60,000 | 1.00 | 60,000 |
| 2025-05-21 | ACMR | Sale | 70,000 | 23.82 | 1,667,400 |
| 2025-05-22 | ACMR | Sale | 60,000 | 22.63 | 1,357,800 |
| 2025-03-11 | ACMR | Sale | 56,250 | 26.57 | 1,494,562 |
| 2025-03-12 | ACMR | Sale | 37,500 | 27.42 | 1,028,250 |
| 2025-03-13 | ACMR | Sale | 37,500 | 27.47 | 1,030,125 |
| 2025-03-03 | ACMR | Option Ex | 210,000 | .50 | 105,000 |
| 2024-11-29 | ACMR | Sale | 56,250 | 17.44 | 981,000 |
| 2024-11-26 | ACMR | Sale | 56,250 | 18.05 | 1,015,593 |
| 2024-11-22 | ACMR | Sale | 56,250 | 19.08 | 1,073,250 |
| 2024-05-29 | ACMR | Sale | 86,090 | 22.62 | 1,947,355 |
| 2024-05-22 | ACMR | Sale | 90,000 | 22.81 | 2,052,900 |
| 2024-05-14 | ACMR | Option Ex | 180,000 | .50 | 90,000 |
| 2024-03-14 | ACMR | Sale | 87,089 | 27.95 | 2,433,702 |
| 2024-03-08 | ACMR | Sale | 90,000 | 30.36 | 2,731,950 |
| 2024-03-01 | ACMR | Option Ex | 180,000 | .50 | 90,000 |
| 2023-11-29 | ACMR | Sale | 84,776 | 17.14 | 1,452,636 |
| 2023-11-22 | ACMR | Sale | 90,000 | 17.68 | 1,590,750 |
| 2023-09-12 | ACMR | Sale | 90,000 | 18.38 | 1,653,750 |
| 2023-09-13 | ACMR | Sale | 85,116 | 17.68 | 1,504,850 |
| 2023-09-04 | ACMR | Option Ex | 180,000 | .50 | 90,000 |
| 2021-03-18 | ACMR | Sale | 50,000 | 91.92 | 4,596,000 |
| 2021-03-19 | ACMR | Sale | 49,228 | 90.55 | 4,457,595 |
| 2021-03-12 | ACMR | Option Ex | 100,001 | .75 | 75,000 |
| 2020-12-04 | ACMR | Sale | 49,322 | 77.14 | 3,804,699 |
| 2020-12-03 | ACMR | Sale | 49,661 | 82.50 | 4,097,032 |
| 2020-11-25 | ACMR | Option Ex | 100,000 | .75 | 75,000 |
| 2020-09-03 | ACMR | Sale | 20,000 | 84.53 | 1,690,600 |
| 2020-09-04 | ACMR | Sale | 49,453 | 80.08 | 3,960,196 |
| 2020-08-27 | ACMR | Option Ex | 70,000 | .75 | 52,500 |
| 2019-08-20 | ACMR | Option Ex | 30,000 | .75 | 22,500 |
| 2018-06-29 | ACMR | Option Ex | 15,279 | 3.00 | 45,837 |
Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Wang David H (See Remarks of Acm Research, Inc. at the time of this reporting) see the Securities and Exchange Commission (SEC) website.