ACM Research, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| McKechnie Mark | See remarks | Option Exercise | 5,000 | $13.85 | $69,250 | 5,000 | Aug 19, 2021 |
| Xiang Yinan | — | Sale | 25,136 | $85.06 | $2,138,068 | 1,427,411 | Aug 18, 2021 |
| Xiang Yinan | — | Sale | 358 | $86.15 | $30,842 | 1,480,270 | Aug 11, 2021 |
| Hu Chenming | — | Option Exercise | 23,334 | $3.00 | $70,002 | 87,770 | May 4, 2021 |
| Cheav Sotheara | See remarks | Sale | 13,111 | $86.64 | $1,135,937 | 43,334 | Apr 8, 2021 |
| Cheav Sotheara | See remarks | Option Exercise | 13,334 | $1.50 | $20,001 | 56,668 | Apr 5, 2021 |
| Hu Chenming | — | Option Exercise | 10,000 | $3.00 | $30,000 | 64,436 | Mar 30, 2021 |
| Wang David H | See remarks | Sale | 49,228 | $90.55 | $4,457,595 | 168,006 | Mar 18, 2021 |
| Cheav Sotheara | See remarks | Option Exercise | 10,000 | $13.85 | $138,500 | 53,334 | Mar 15, 2021 |
| McKechnie Mark | See remarks | Option Exercise | 10,028 | $13.85 | $138,888 | 10,028 | Mar 12, 2021 |
| Wang David H | See remarks | Tax Withholding | 773 | $97.05 | $75,020 | 267,234 | Mar 12, 2021 |
| Hu Chenming | — | Option Exercise | 11,000 | $7.50 | $82,500 | 42,102 | Mar 8, 2021 |
| Hu Chenming | — | Option Exercise | 10,000 | $7.50 | $75,000 | 31,102 | Mar 2, 2021 |
| Feng Lisa | See remarks | Option Exercise | 3,470 | $5.60 | $19,432 | 14,230 | Feb 26, 2021 |
| Liu Tracy | — | Sale | 2,000 | $120.00 | $240,000 | 36,924 | Feb 12, 2021 |
| Chen Fuping | See remarks | Sale | 30,000 | $120.00 | $3,600,000 | — | Feb 12, 2021 |
| Hu Chenming | — | Sale | 10,000 | $120.00 | $1,200,000 | 21,102 | Feb 12, 2021 |
| Liu Tracy | — | Sale | 1,600 | $110.00 | $176,000 | 38,924 | Feb 9, 2021 |
| Liu Tracy | — | Sale | 2,000 | $100.00 | $200,000 | 40,924 | Jan 6, 2021 |
| Wang Jian | See remarks | Sale | 32,486 | $78.00 | $2,533,908 | 84,386 | Dec 30, 2020 |
| Xiang Yinan | — | Sale | 82,454 | $75.30 | $6,208,786 | 1,549,681 | Dec 18, 2020 |
| Xiang Yinan | — | Sale | 11,218 | $76.03 | $852,905 | 1,635,349 | Dec 15, 2020 |
| Wang David H | See remarks | Sale | 32,995 | $82.50 | $2,722,088 | 217,328 | Dec 4, 2020 |
| Wang David H | See remarks | Tax Withholding | 339 | $73.76 | $25,005 | 201,001 | Nov 25, 2020 |
| McKechnie Mark | See remarks | Option Exercise | 7,500 | $16.81 | $126,075 | 7,500 | Nov 19, 2020 |
| Cheav Sotheara | See remarks | Sale | 10,000 | $88.63 | $886,300 | 53,004 | Nov 13, 2020 |
| Cheav Sotheara | See remarks | Tax Withholding | 330 | $91.00 | $30,030 | 63,004 | Nov 5, 2020 |
| Feng Lisa | See remarks | Option Exercise | 15,000 | $5.31 | $79,650 | 25,760 | Sep 16, 2020 |
| Cheav Sotheara | See remarks | Sale | 5,000 | $60.75 | $303,750 | 43,334 | Sep 14, 2020 |
| Liu Tracy | — | Option Exercise | 6,000 | $16.81 | $100,860 | 42,924 | Sep 10, 2020 |
| Wang Jian | See remarks | Tax Withholding | 848 | $58.97 | $50,007 | 116,872 | Sep 9, 2020 |
| Hu Chenming | — | Option Exercise | 31,102 | $3.00 | $93,306 | 31,102 | Sep 8, 2020 |
| Wang David H | See remarks | Sale | 20,000 | $84.53 | $1,690,600 | 217,459 | Sep 4, 2020 |
| Wang David H | See remarks | Tax Withholding | 547 | $96.05 | $52,539 | 237,459 | Aug 27, 2020 |
| McKechnie Mark | See remarks | Sale | 4,585 | $93.18 | $427,230 | — | Aug 27, 2020 |
| Hu Chenming | — | Sale | 7,806 | $100.00 | $780,600 | — | Aug 3, 2020 |
| Hu Chenming | — | Sale | 14,000 | $84.15 | $1,178,100 | 7,806 | Jul 13, 2020 |
| McKechnie Mark | See remarks | Option Exercise | 5,415 | $13.85 | $74,998 | 5,415 | Jun 15, 2020 |
| Hu Chenming | — | Sale | 8,194 | $65.12 | $533,593 | 21,806 | Jun 3, 2020 |
| Wang David H | See remarks | C | 33,334 | — | — | 33,334 | May 21, 2020 |
| Wang Jian | See remarks | Other | 242,681 | — | — | — | Mar 31, 2020 |
| Liu Tracy | — | Option Exercise | 20,000 | $3.00 | $60,000 | 36,924 | Mar 18, 2020 |
| Feng Lisa | See remarks | Option Exercise | 3,817 | $5.60 | $21,375 | 10,760 | Mar 18, 2020 |
| Cheav Sotheara | See remarks | Disposition | 13,393 | $13.20 | $176,788 | 29,941 | Aug 23, 2019 |
| Chen Fuping | See remarks | Disposition | 17,946 | $13.20 | $236,887 | — | Aug 23, 2019 |
| Dun Haiping | — | Disposition | 28,661 | $13.20 | $378,325 | 285,030 | Aug 23, 2019 |
| Hu Chenming | — | Disposition | 22,232 | $13.20 | $293,462 | 7,768 | Aug 23, 2019 |
| Liu Tracy | — | Disposition | 2,143 | $13.20 | $28,288 | 16,924 | Aug 23, 2019 |
| Wang Jian | See remarks | Disposition | 154,821 | $13.20 | $2,043,637 | 327,067 | Aug 23, 2019 |
| Wang David H | See remarks | Disposition | 28,661 | $13.20 | $378,325 | 168,006 | Aug 23, 2019 |