Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Acm Research, Inc. (ACMR) since 2018 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Acm Research, Inc.. Table 2 shows the detailed insider transactions. This company's CIK number is 1680062.
Total stock buying since 2018: $0.
Total stock sales since 2018: $229,840,813.
Total stock option exercises since 2018: $10,562,773.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2026 | 0 | $0 | 432,303 | $25,282,335 | 432,303 | $2,631,555 |
| 2025 | 0 | $0 | 1,189,077 | $34,863,871 | 1,235,001 | $3,252,024 |
| 2024 | 0 | $0 | 3,055,273 | $68,579,812 | 651,516 | $1,139,089 |
| 2023 | 0 | $0 | 764,724 | $12,202,574 | 543,750 | $1,072,036 |
| 2022 | 0 | $0 | 191,802 | $4,000,757 | 190,069 | $231,758 |
| 2021 | 0 | $0 | 545,256 | $49,515,667 | 255,938 | $1,122,474 |
| 2020 | 0 | $0 | 453,033 | $35,395,797 | 326,694 | $834,719 |
| 2019 | 0 | $0 | 0 | $0 | 40,000 | $30,000 |
| 2018 | 0 | $0 | 0 | $0 | 118,195 | $249,118 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2026-06 | 0 | $0 | 118,752 | $10,451,885 | 118,752 | $360,439 |
| 2026-05 | 0 | $0 | 5,000 | $329,600 | 5,000 | $28,000 |
| 2026-04 | 0 | $0 | 5,000 | $260,000 | 5,000 | $145,900 |
| 2026-03 | 0 | $0 | 303,551 | $14,240,850 | 303,551 | $2,097,216 |
| 2025-12 | 0 | $0 | 281,250 | $9,449,825 | 281,250 | $954,837 |
| 2025-11 | 0 | $0 | 30,000 | $997,949 | 30,000 | $168,000 |
| 2025-09 | 0 | $0 | 185,000 | $5,372,800 | 315,000 | $581,900 |
| 2025-08 | 0 | $0 | 71,152 | $2,194,560 | 71,152 | $490,901 |
| 2025-07 | 0 | $0 | 90,000 | $2,670,000 | 90,000 | $159,000 |
| 2025-06 | 0 | $0 | 15,000 | $390,000 | 15,000 | $84,000 |
| 2025-05 | 0 | $0 | 145,000 | $3,403,500 | 145,000 | $214,000 |
| 2025-03 | 0 | $0 | 334,077 | $9,535,483 | 250,001 | $201,500 |
| 2025-02 | 0 | $0 | 37,598 | $849,754 | 37,598 | $397,886 |
| 2024-11 | 0 | $0 | 202,808 | $3,688,823 | 0 | $0 |
| 2024-10 | 0 | $0 | 2,216,516 | $49,125,826 | 16,516 | $92,489 |
| 2024-08 | 0 | $0 | 34,097 | $643,023 | 35,000 | $17,500 |
| 2024-06 | 0 | $0 | 140,000 | $3,170,100 | 140,000 | $656,600 |
| 2024-05 | 0 | $0 | 210,329 | $4,778,833 | 215,000 | $107,500 |
| 2024-03 | 0 | $0 | 221,523 | $6,449,207 | 215,000 | $107,500 |
| 2024-02 | 0 | $0 | 20,000 | $504,000 | 20,000 | $112,000 |
| 2024-01 | 0 | $0 | 10,000 | $220,000 | 10,000 | $45,500 |
| 2023-12 | 0 | $0 | 17,500 | $350,000 | 17,500 | $98,000 |
| 2023-11 | 0 | $0 | 234,760 | $4,076,050 | 41,000 | $239,749 |
| 2023-10 | 0 | $0 | 11,250 | $225,000 | 11,250 | $51,187 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2026-06-05 | Cheav Sotheara (See remarks) | Sale | 5,399 | 83.44 | 450,492 |
| 2026-06-05 | Cheav Sotheara (See remarks) | Option Ex | 5,399 | 13.89 | 74,992 |
| 2026-06-04 | Wang David H (See Remarks) | Sale | 40,002 | 86.02 | 3,440,812 |
| 2026-06-04 | Wang David H (See Remarks) | Option Ex | 40,002 | 1.00 | 40,002 |
| 2026-06-04 | Cheav Sotheara (See remarks) | Sale | 13,351 | 84.99 | 1,134,661 |
| 2026-06-04 | Cheav Sotheara (See remarks) | Option Ex | 13,351 | 13.89 | 185,445 |
| 2026-06-03 | Wang David H (See Remarks) | Sale | 60,000 | 90.43 | 5,425,920 |
| 2026-06-03 | Wang David H (See Remarks) | Option Ex | 60,000 | 1.00 | 60,000 |
| 2026-05-19 | Dun Haiping | Sale | 5,000 | 65.92 | 329,600 |
| 2026-05-19 | Dun Haiping | Option Ex | 5,000 | 5.60 | 28,000 |
| 2026-04-17 | Pappis Charles C | Sale | 5,000 | 52.00 | 260,000 |
| 2026-04-17 | Pappis Charles C | Option Ex | 5,000 | 29.18 | 145,900 |
| 2026-03-12 | Mckechnie Mark (See Remarks) | Sale | 98,551 | 45.74 | 4,507,525 |
| 2026-03-12 | Mckechnie Mark (See Remarks) | Option Ex | 98,551 | 16.69 | 1,644,816 |
| 2026-03-12 | Wang David H (See Remarks) | Sale | 50,000 | 45.74 | 2,287,150 |
| 2026-03-12 | Wang David H (See Remarks) | Option Ex | 50,000 | 1.00 | 50,000 |
| 2026-03-11 | Wang David H (See Remarks) | Sale | 60,000 | 48.12 | 2,886,900 |
| 2026-03-11 | Wang David H (See Remarks) | Option Ex | 60,000 | 1.00 | 60,000 |
| 2026-03-11 | Liu Tracy | Sale | 15,000 | 48.03 | 720,450 |
| 2026-03-11 | Liu Tracy | Option Ex | 15,000 | 1.00 | 15,000 |
| 2026-03-10 | Liu Tracy | Sale | 45,000 | 47.62 | 2,143,125 |
| 2026-03-10 | Liu Tracy | Option Ex | 45,000 | 1.00 | 45,000 |
| 2026-03-06 | Feng Lisa (See remarks) | Sale | 15,000 | 46.33 | 694,875 |
| 2026-03-06 | Feng Lisa (See remarks) | Option Ex | 15,000 | 4.55 | 68,250 |
| 2026-03-05 | Feng Lisa (See remarks) | Sale | 15,000 | 50.02 | 750,375 |
| 2026-03-05 | Feng Lisa (See remarks) | Option Ex | 15,000 | 4.55 | 68,250 |
| 2026-03-05 | Pappis Charles C | Sale | 5,000 | 50.09 | 250,450 |
| 2026-03-05 | Pappis Charles C | Option Ex | 5,000 | 29.18 | 145,900 |
| 2025-12-08 | Mckechnie Mark (See Remarks) | Sale | 22,500 | 35.45 | 797,625 |
| 2025-12-08 | Mckechnie Mark (See Remarks) | Option Ex | 22,500 | 25.45 | 572,625 |
| 2025-12-04 | Mckechnie Mark (See Remarks) | Sale | 8,750 | 33.88 | 296,450 |
| 2025-12-04 | Mckechnie Mark (See Remarks) | Option Ex | 8,750 | 4.55 | 39,812 |
| 2025-12-04 | Wang David H (See Remarks) | Sale | 60,000 | 33.97 | 2,038,200 |
| 2025-12-04 | Wang David H (See Remarks) | Option Ex | 60,000 | 1.00 | 60,000 |
| 2025-12-03 | Chen Fuping (See remarks) | Sale | 20,000 | 33.31 | 666,200 |
| 2025-12-03 | Chen Fuping (See remarks) | Option Ex | 20,000 | 1.77 | 35,400 |
| 2025-12-03 | Wang David H (See Remarks) | Sale | 70,000 | 33.30 | 2,331,350 |
| 2025-12-03 | Wang David H (See Remarks) | Option Ex | 70,000 | 1.00 | 70,000 |
| 2025-12-02 | Chen Fuping (See remarks) | Sale | 100,000 | 33.20 | 3,320,000 |
| 2025-12-02 | Chen Fuping (See remarks) | Option Ex | 100,000 | 1.77 | 177,000 |
| 2025-11-13 | Feng Lisa (See remarks) | Sale | 15,000 | 33.77 | 506,550 |
| 2025-11-13 | Feng Lisa (See remarks) | Option Ex | 15,000 | 5.60 | 84,000 |
| 2025-11-12 | Feng Lisa (See remarks) | Sale | 15,000 | 32.76 | 491,399 |
| 2025-11-12 | Feng Lisa (See remarks) | Option Ex | 15,000 | 5.60 | 84,000 |
| 2025-09-18 | Wang Jian (See remarks) | Sale | 30,000 | 35.00 | 1,050,000 |
| 2025-09-18 | Wang Jian (See remarks) | Option Ex | 30,000 | 5.60 | 168,000 |
| 2025-09-18 | Cheav Sotheara (See remarks) | Sale | 10,000 | 35.00 | 350,000 |
| 2025-09-18 | Cheav Sotheara (See remarks) | Option Ex | 10,000 | 13.89 | 138,900 |
| 2025-09-17 | Liu Tracy | Sale | 15,000 | 33.00 | 495,000 |
| 2025-09-17 | Liu Tracy | Option Ex | 15,000 | 1.00 | 15,000 |
| 2025-09-08 | Wang David H (See Remarks) | Option Ex | 130,000 | 1.00 | 130,000 |
| 2025-09-04 | Wang David H (See Remarks) | Sale | 60,000 | 26.44 | 1,586,400 |
| 2025-09-04 | Wang David H (See Remarks) | Option Ex | 60,000 | 1.00 | 60,000 |
| 2025-09-03 | Wang David H (See Remarks) | Sale | 70,000 | 27.02 | 1,891,400 |
| 2025-09-03 | Wang David H (See Remarks) | Option Ex | 70,000 | 1.00 | 70,000 |
| 2025-08-25 | Wang Jian (See remarks) | Sale | 30,000 | 32.00 | 960,000 |
| 2025-08-25 | Wang Jian (See remarks) | Option Ex | 30,000 | 5.60 | 168,000 |
| 2025-08-22 | Wang Jian (See remarks) | Sale | 30,000 | 30.00 | 900,000 |
| 2025-08-22 | Wang Jian (See remarks) | Option Ex | 30,000 | 5.60 | 168,000 |
| 2025-08-22 | Cheav Sotheara (See remarks) | Sale | 11,152 | 30.00 | 334,560 |
| 2025-08-22 | Cheav Sotheara (See remarks) | Option Ex | 11,152 | 13.89 | 154,901 |
| 2025-07-15 | Liu Tracy | Sale | 45,000 | 30.00 | 1,350,000 |
| 2025-07-15 | Liu Tracy | Option Ex | 45,000 | 1.00 | 45,000 |
| 2025-07-07 | Feng Lisa (See remarks) | Sale | 15,000 | 28.00 | 420,000 |
| 2025-07-07 | Feng Lisa (See remarks) | Option Ex | 15,000 | 5.60 | 84,000 |
| 2025-06-24 | Feng Lisa (See remarks) | Sale | 15,000 | 26.00 | 390,000 |
| 2025-06-24 | Feng Lisa (See remarks) | Option Ex | 15,000 | 5.60 | 84,000 |
| 2025-05-22 | Wang David H (See Remarks) | Sale | 60,000 | 22.63 | 1,357,800 |
| 2025-05-22 | Wang David H (See Remarks) | Option Ex | 60,000 | 1.00 | 60,000 |
| 2025-05-21 | Wang David H (See Remarks) | Sale | 70,000 | 23.82 | 1,667,400 |
| 2025-05-21 | Wang David H (See Remarks) | Option Ex | 70,000 | 1.00 | 70,000 |
| 2025-05-14 | Mckechnie Mark (See Remarks) | Sale | 15,000 | 25.22 | 378,300 |
| 2025-05-14 | Mckechnie Mark (See Remarks) | Option Ex | 15,000 | 5.60 | 84,000 |
| 2025-03-17 | Hu Chenming | Sale | 163,308 | 30.00 | 4,899,240 |
| 2025-03-14 | Dun Haiping | Sale | 9,518 | 28.77 | 273,880 |
| 2025-03-13 | Wang David H (See Remarks) | Sale | 37,500 | 27.47 | 1,030,125 |
| 2025-03-12 | Mckechnie Mark (See Remarks) | Sale | 15,000 | 27.42 | 411,300 |
| 2025-03-12 | Mckechnie Mark (See Remarks) | Option Ex | 15,000 | 5.60 | 84,000 |
| 2025-03-12 | Wang David H (See Remarks) | Sale | 37,500 | 27.42 | 1,028,250 |
| 2025-03-11 | Wang David H (See Remarks) | Sale | 56,250 | 26.57 | 1,494,562 |
| 2025-03-10 | Dun Haiping | Sale | 15,001 | 26.54 | 398,126 |
| 2025-03-03 | Dun Haiping | Option Ex | 25,001 | .50 | 12,500 |
| 2025-03-03 | Wang David H (See Remarks) | Option Ex | 210,000 | .50 | 105,000 |
| 2025-02-06 | Mckechnie Mark (See Remarks) | Sale | 15,000 | 22.00 | 330,000 |
| 2025-02-06 | Mckechnie Mark (See Remarks) | Option Ex | 15,000 | 5.60 | 84,000 |
| 2025-02-06 | Cheav Sotheara (See remarks) | Sale | 22,598 | 23.00 | 519,754 |
| 2025-02-06 | Cheav Sotheara (See remarks) | Option Ex | 22,598 | 13.89 | 313,886 |
| 2024-11-29 | Dun Haiping | Sale | 19,058 | 17.43 | 332,180 |
| 2024-11-29 | Wang David H (See Remarks) | Sale | 56,250 | 17.44 | 981,000 |
| 2024-11-26 | Wang David H (See Remarks) | Sale | 56,250 | 18.05 | 1,015,593 |
| 2024-11-22 | Dun Haiping | Sale | 15,000 | 19.12 | 286,800 |
| 2024-11-22 | Wang David H (See Remarks) | Sale | 56,250 | 19.08 | 1,073,250 |
| 2024-10-08 | Shanghai Pudong Science & Technology Investment Group Co., Ltd. | Sale | 90,396 | 21.13 | 1,910,067 |
| 2024-10-08 | Xing Xiao | Sale | 90,396 | 21.13 | 1,910,067 |
| 2024-10-07 | Shanghai Pudong Science & Technology Investment Group Co., Ltd. | Sale | 275,000 | 24.57 | 6,755,925 |
| 2024-10-07 | Xing Xiao | Sale | 275,000 | 24.89 | 6,845,575 |
| 2024-10-04 | Shanghai Pudong Science & Technology Investment Group Co., Ltd. | Sale | 700,000 | 21.23 | 14,861,000 |
| 2024-10-04 | Xing Xiao | Sale | 700,000 | 21.56 | 15,092,000 |
| 2024-10-04 | Mckechnie Mark (See Remarks) | Sale | 16,516 | 22.00 | 363,352 |
| 2024-10-04 | Mckechnie Mark (See Remarks) | Option Ex | 16,516 | 5.60 | 92,489 |
| 2024-10-02 | Shanghai Pudong Science & Technology Investment Group Co., Ltd. | Sale | 26,300 | 20.01 | 526,263 |
| 2024-10-02 | Xing Xiao | Sale | 26,300 | 20.01 | 526,263 |
| 2024-10-01 | Shanghai Pudong Science & Technology Investment Group Co., Ltd. | Sale | 8,304 | 20.19 | 167,657 |
| 2024-10-01 | Xing Xiao | Sale | 8,304 | 20.19 | 167,657 |
| 2024-08-29 | Dun Haiping | Sale | 19,097 | 18.08 | 345,273 |
| 2024-08-22 | Dun Haiping | Sale | 15,000 | 19.85 | 297,750 |
| 2024-08-14 | Dun Haiping | Option Ex | 35,000 | .50 | 17,500 |
| 2024-06-11 | Wang Jian (See remarks) | Sale | 30,000 | 23.33 | 699,900 |
| 2024-06-11 | Wang Jian (See remarks) | Option Ex | 30,000 | 4.62 | 138,600 |
| 2024-06-10 | Wang Jian (See remarks) | Sale | 30,000 | 22.07 | 662,100 |
| 2024-06-10 | Wang Jian (See remarks) | Option Ex | 30,000 | 4.62 | 138,600 |
| 2024-06-07 | Wang Jian (See remarks) | Sale | 30,000 | 22.07 | 662,100 |
| 2024-06-07 | Wang Jian (See remarks) | Option Ex | 30,000 | 4.62 | 138,600 |
| 2024-06-06 | Mckechnie Mark (See Remarks) | Sale | 20,000 | 22.92 | 458,400 |
| 2024-06-06 | Mckechnie Mark (See Remarks) | Option Ex | 20,000 | 5.11 | 102,200 |
| 2024-06-06 | Wang Jian (See remarks) | Sale | 30,000 | 22.92 | 687,600 |
| 2024-06-06 | Wang Jian (See remarks) | Option Ex | 30,000 | 4.62 | 138,600 |
| 2024-05-29 | Dun Haiping | Sale | 19,239 | 22.63 | 435,378 |
| 2024-05-29 | Wang David H (See Remarks) | Sale | 86,090 | 22.62 | 1,947,355 |
| 2024-05-22 | Dun Haiping | Sale | 15,000 | 22.88 | 343,200 |
| 2024-05-22 | Wang David H (See Remarks) | Sale | 90,000 | 22.81 | 2,052,900 |
| 2024-05-14 | Dun Haiping | Option Ex | 35,000 | .50 | 17,500 |
| 2024-05-14 | Wang David H (See Remarks) | Option Ex | 180,000 | .50 | 90,000 |
| 2024-03-14 | Dun Haiping | Sale | 19,434 | 27.95 | 543,180 |
| 2024-03-14 | Wang David H (See Remarks) | Sale | 87,089 | 27.95 | 2,433,702 |
| 2024-03-14 | Cheav Sotheara (See remarks) | Sale | 5,000 | 27.91 | 139,525 |
| 2024-03-13 | Cheav Sotheara (See remarks) | Sale | 5,000 | 29.09 | 145,450 |
| 2024-03-08 | Dun Haiping | Sale | 15,000 | 30.36 | 455,400 |
| 2024-03-08 | Wang David H (See Remarks) | Sale | 90,000 | 30.36 | 2,731,950 |
| 2024-03-01 | Dun Haiping | Option Ex | 35,000 | .50 | 17,500 |
| 2024-03-01 | Wang David H (See Remarks) | Option Ex | 180,000 | .50 | 90,000 |
| 2024-02-28 | Feng Lisa (See remarks) | Sale | 7,500 | 25.20 | 189,000 |
| 2024-02-28 | Feng Lisa (See remarks) | Option Ex | 7,500 | 5.60 | 42,000 |
| 2024-02-28 | Liu Tracy | Sale | 12,500 | 25.20 | 315,000 |
| 2024-02-28 | Liu Tracy | Option Ex | 12,500 | 5.60 | 70,000 |
| 2024-01-12 | Mckechnie Mark (See Remarks) | Sale | 10,000 | 22.00 | 220,000 |
| 2024-01-12 | Mckechnie Mark (See Remarks) | Option Ex | 10,000 | 4.55 | 45,500 |
| 2023-12-26 | Feng Lisa (See remarks) | Sale | 7,500 | 20.00 | 150,000 |
| 2023-12-26 | Feng Lisa (See remarks) | Option Ex | 7,500 | 5.60 | 42,000 |
| 2023-12-26 | Liu Tracy | Sale | 10,000 | 20.00 | 200,000 |
| 2023-12-26 | Liu Tracy | Option Ex | 10,000 | 5.60 | 56,000 |
| 2023-11-29 | Dun Haiping | Sale | 18,984 | 17.25 | 327,474 |
| 2023-11-29 | Wang David H (See Remarks) | Sale | 84,776 | 17.14 | 1,452,636 |
| 2023-11-22 | Wang David H (See Remarks) | Sale | 90,000 | 17.68 | 1,590,750 |
| 2023-11-20 | Liu Tracy | Sale | 15,000 | 17.91 | 268,650 |
| 2023-11-20 | Liu Tracy | Option Ex | 15,000 | 7.36 | 110,400 |
| 2023-11-13 | Cheav Sotheara (See remarks) | Sale | 26,000 | 16.79 | 436,540 |
| 2023-11-13 | Cheav Sotheara (See remarks) | Option Ex | 26,000 | 4.97 | 129,349 |
| 2023-10-11 | Mckechnie Mark (See Remarks) | Sale | 11,250 | 20.00 | 225,000 |
| 2023-10-11 | Mckechnie Mark (See Remarks) | Option Ex | 11,250 | 4.55 | 51,187 |
Insider trading activities including stock purchases, stock sales, and option exercises of ACMR listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Acm Research, Inc. (symbol ACMR, CIK number 1680062) see the Securities and Exchange Commission (SEC) website.