David H. Wang's most recent trade in ACM Research Inc - Ordinary Shares - Class A was a trade of 70,000 Class A Common Stock done at an average price of $1 . Disclosure was reported to the exchange on Sept. 8, 2026.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 08 Sep 2026 | 70,000 | 872,708 (5%) | 0% | 1 | 70,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 08 Sep 2026 | 70,000 | 130,000 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 08 Sep 2026 | 70,000 | 200,000 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 08 Sep 2026 | 70,000 | 872,708 (5%) | 0% | 1 | 70,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 77.15 per share. | 08 Sep 2026 | 51,374 | 816,531 (4%) | 0% | 77.1 | 3,963,504 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 73.80 per share. | 08 Sep 2026 | 33,493 | 839,215 (5%) | 0% | 73.8 | 2,471,783 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 74.67 per share. | 08 Sep 2026 | 18,934 | 820,281 (5%) | 0% | 74.7 | 1,413,802 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 78.08 per share. | 08 Sep 2026 | 12,323 | 804,208 (4%) | 0% | 78.1 | 962,180 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 75.58 per share. | 08 Sep 2026 | 11,666 | 808,615 (4%) | 0% | 75.6 | 881,716 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 76.73 per share. | 08 Sep 2026 | 4,807 | 803,808 (4%) | 0% | 76.7 | 368,841 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 75.99 per share. | 08 Sep 2026 | 4,803 | 867,905 (5%) | 0% | 76.0 | 364,980 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 78.57 per share. | 08 Sep 2026 | 1,500 | 802,708 (4%) | 0% | 78.6 | 117,855 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 77.59 per share. | 08 Sep 2026 | 1,100 | 802,708 (4%) | 0% | 77.6 | 85,349 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 03 Jun 2026 | 60,000 | 862,708 (5%) | 0% | 1 | 60,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 03 Jun 2026 | 60,000 | 310,002 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 03 Jun 2026 | 40,002 | 842,710 (5%) | 0% | 1 | 40,002 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 03 Jun 2026 | 40,002 | 270,000 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 89.84 per share. | 03 Jun 2026 | 32,450 | 819,663 (5%) | 0% | 89.8 | 2,915,308 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 85.11 per share. | 03 Jun 2026 | 17,543 | 823,107 (5%) | 0% | 85.1 | 1,493,085 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 86.07 per share. | 03 Jun 2026 | 10,992 | 812,115 (4%) | 0% | 86.1 | 946,081 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 90.78 per share. | 03 Jun 2026 | 9,925 | 809,738 (4%) | 0% | 90.8 | 900,992 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 87.13 per share. | 03 Jun 2026 | 8,581 | 803,534 (4%) | 0% | 87.1 | 747,663 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 88.98 per share. | 03 Jun 2026 | 6,295 | 852,113 (5%) | 0% | 89.0 | 560,129 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 92.38 per share. | 03 Jun 2026 | 5,843 | 803,895 (4%) | 0% | 92.4 | 539,776 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 87.57 per share. | 03 Jun 2026 | 4,300 | 858,408 (5%) | 0% | 87.6 | 376,551 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 83.86 per share. | 03 Jun 2026 | 2,060 | 840,650 (5%) | 0% | 83.9 | 172,752 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 93.04 per share. | 03 Jun 2026 | 1,187 | 802,708 (4%) | 0% | 93.0 | 110,438 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 87.91 per share. | 03 Jun 2026 | 826 | 802,708 (4%) | 0% | 87.9 | 72,614 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 13 May 2026 | 6,208 | 6,208 | - | - | Restricted Stock Units | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 11 Mar 2026 | 60,000 | 420,002 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 11 Mar 2026 | 60,000 | 862,708 (5%) | 0% | 1 | 60,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Mr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 11 Mar 2026 | 60,000 | 862,708 (5%) | 0% | 1 | 60,000 | - |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 47.89 per share. | 11 Mar 2026 | 55,373 | 807,335 (4%) | 0% | 47.9 | 2,651,813 | Class A Common Stock |
| ACM Research Inc (Class A) | Mr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 47.89 per share. | 11 Mar 2026 | 55,373 | 807,335 (4%) | 0% | 47.9 | 2,651,813 | - |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 11 Mar 2026 | 50,000 | 370,002 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 11 Mar 2026 | 50,000 | 852,708 (5%) | 0% | 1 | 50,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Mr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 11 Mar 2026 | 50,000 | 852,708 (5%) | 0% | 1 | 50,000 | - |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 45.74 per share. | 11 Mar 2026 | 38,737 | 803,410 (4%) | 0% | 45.7 | 1,771,830 | Class A Common Stock |
| ACM Research Inc (Class A) | Mr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 45.74 per share. | 11 Mar 2026 | 38,737 | 803,410 (4%) | 0% | 45.7 | 1,771,830 | - |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 44.92 per share. | 11 Mar 2026 | 10,561 | 842,147 (5%) | 0% | 44.9 | 474,400 | Class A Common Stock |
| ACM Research Inc (Class A) | Mr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 44.92 per share. | 11 Mar 2026 | 10,561 | 842,147 (5%) | 0% | 44.9 | 474,400 | - |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 48.34 per share. | 11 Mar 2026 | 4,627 | 802,708 (4%) | 0% | 48.3 | 223,669 | Class A Common Stock |
| ACM Research Inc (Class A) | Mr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 48.34 per share. | 11 Mar 2026 | 4,627 | 802,708 (4%) | 0% | 48.3 | 223,669 | - |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 46.57 per share. | 11 Mar 2026 | 702 | 802,708 (4%) | 0% | 46.6 | 32,692 | Class A Common Stock |
| ACM Research Inc (Class A) | Mr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 46.57 per share. | 11 Mar 2026 | 702 | 802,708 (4%) | 0% | 46.6 | 32,692 | - |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 04 Feb 2026 | 545,400 | 1,636,197 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 03 Dec 2025 | 70,000 | 872,708 (5%) | 0% | 1 | 70,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 03 Dec 2025 | 70,000 | 540,002 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 33.05 per share. | 03 Dec 2025 | 68,800 | 803,908 (4%) | 0% | 33.1 | 2,273,840 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 03 Dec 2025 | 60,000 | 480,002 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 03 Dec 2025 | 60,000 | 862,708 (5%) | 0% | 1 | 60,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 34.42 per share. | 03 Dec 2025 | 40,183 | 802,708 (4%) | 0% | 34.4 | 1,383,099 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 33.52 per share. | 03 Dec 2025 | 19,817 | 842,891 (5%) | 0% | 33.5 | 664,266 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 33.56 per share. | 03 Dec 2025 | 1,200 | 802,708 (4%) | 0% | 33.6 | 40,272 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 27 Oct 2025 | 545,400 | 545,400 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 08 Sep 2025 | 130,000 | 610,002 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 08 Sep 2025 | 130,000 | 802,708 (4%) | 0% | 1 | 130,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 03 Sep 2025 | 70,000 | 742,708 (4%) | 0% | 1 | 70,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 03 Sep 2025 | 70,000 | 800,002 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 26.73 per share. | 03 Sep 2025 | 66,057 | 676,651 (4%) | 0% | 26.7 | 1,765,704 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 03 Sep 2025 | 60,000 | 740,002 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 26.44 per share. | 03 Sep 2025 | 60,000 | 672,708 (4%) | 0% | 26.4 | 1,586,400 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 03 Sep 2025 | 60,000 | 732,708 (4%) | 0% | 1 | 60,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 27.31 per share. | 03 Sep 2025 | 3,943 | 672,708 (4%) | 0% | 27.3 | 107,683 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 21 May 2025 | 70,000 | 930,002 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 21 May 2025 | 70,000 | 742,708 (4%) | 0% | 1 | 70,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 23.60 per share. | 21 May 2025 | 69,992 | 672,716 (4%) | 0% | 23.6 | 1,651,811 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 21 May 2025 | 60,000 | 870,002 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 22.63 per share. | 21 May 2025 | 60,000 | 672,708 (4%) | 0% | 22.6 | 1,357,800 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 1.00 per share. | 21 May 2025 | 60,000 | 732,708 (4%) | 0% | 1 | 60,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 24.00 per share. | 21 May 2025 | 8 | 672,708 (4%) | 0% | 24 | 192 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 26.57 per share. | 11 Mar 2025 | 56,250 | 747,708 (4%) | 0% | 26.6 | 1,494,563 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 27.42 per share. | 11 Mar 2025 | 37,500 | 710,208 (4%) | 0% | 27.4 | 1,028,250 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 27.29 per share. | 11 Mar 2025 | 36,481 | 673,727 (4%) | 0% | 27.3 | 995,566 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 27.65 per share. | 11 Mar 2025 | 1,019 | 672,708 (4%) | 0% | 27.6 | 28,175 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.50 per share. | 03 Mar 2025 | 210,000 | 808,006 (4%) | 1% | 0.5 | 105,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 03 Mar 2025 | 210,000 | 0 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Payment of exercise price or tax liability using portion of securities received from the company at price $ 25.94 per share. | 03 Mar 2025 | 4,048 | 803,958 (4%) | 0% | 25.9 | 105,005 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 17.44 per share. | 29 Nov 2024 | 56,250 | 598,006 (3%) | 0% | 17.4 | 981,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 17.80 per share. | 26 Nov 2024 | 46,766 | 663,740 (4%) | 0% | 17.8 | 832,435 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 18.31 per share. | 26 Nov 2024 | 9,484 | 654,256 (4%) | 0% | 18.3 | 173,652 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 19.08 per share. | 22 Nov 2024 | 56,250 | 710,506 (4%) | 0% | 19.1 | 1,073,250 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.50 per share. | 14 Nov 2024 | 270,000 | 774,018 (4%) | 1% | 0.5 | 135,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 14 Nov 2024 | 270,000 | 210,000 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Payment of exercise price or tax liability using portion of securities received from the company at price $ 18.59 per share. | 14 Nov 2024 | 7,262 | 766,756 (4%) | 0% | 18.6 | 135,001 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 22.62 per share. | 29 May 2024 | 45,000 | 545,108 (3%) | 0% | 22.6 | 1,017,900 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 22.62 per share. | 29 May 2024 | 41,090 | 504,018 (3%) | 0% | 22.6 | 929,456 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 22.81 per share. | 22 May 2024 | 45,000 | 635,108 (3%) | 0% | 22.8 | 1,026,450 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 22.81 per share. | 22 May 2024 | 45,000 | 590,108 (3%) | 0% | 22.8 | 1,026,450 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.50 per share. | 14 May 2024 | 180,000 | 684,018 (4%) | 1% | 0.5 | 90,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 14 May 2024 | 180,000 | 480,000 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Payment of exercise price or tax liability using portion of securities received from the company at price $ 23.02 per share. | 14 May 2024 | 3,910 | 680,108 (4%) | 0% | 23.0 | 90,008 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 27.51 per share. | 14 Mar 2024 | 76,478 | 514,629 (3%) | 0% | 27.5 | 2,103,910 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 28.38 per share. | 14 Mar 2024 | 10,611 | 504,018 (3%) | 0% | 28.4 | 301,140 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 30.36 per share. | 08 Mar 2024 | 45,000 | 636,107 (3%) | 0% | 30.4 | 1,366,200 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 30.35 per share. | 08 Mar 2024 | 45,000 | 591,107 (3%) | 0% | 30.4 | 1,365,750 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.50 per share. | 01 Mar 2024 | 180,000 | 684,018 (4%) | 1% | 0.5 | 90,000 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | 01 Mar 2024 | 180,000 | 660,000 | - | - | Stock Option | ||
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Payment of exercise price or tax liability using portion of securities received from the company at price $ 30.92 per share. | 01 Mar 2024 | 2,911 | 681,107 (4%) | 0% | 30.9 | 90,008 | Class A Common Stock |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 17.14 per share. | 29 Nov 2023 | 45,000 | 543,794 (3%) | 0% | 17.1 | 771,300 | - |
| ACM Research Inc (Class A) | Dr. David H. Wang | Director, See Remarks, Ten Percent Owner | Sale of securities on an exchange or to another person at price $ 17.13 per share. | 29 Nov 2023 | 39,776 | 504,018 (3%) | 0% | 17.1 | 681,363 | - |