ACMR ACM Research, Inc.
Nasdaq · SEC CIK 1680062 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $51.15M 17 sales by 8 insiders
- Filings on record
- 157 since 2021-08-13, latest 2026-09-10 16:30
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| Wang David H | See Remarks, Dir, 10% | — | $28.98M |
| McKechnie Mark | See Remarks | — | $9.85M |
| Chen Fuping | See remarks | — | $3.98M |
| Liu Tracy | Dir | — | $2.85M |
| Feng Lisa | See remarks | — | $2.44M |
| Cheav Sotheara | See remarks | — | $1.59M |
| Dun Haiping | Dir | — | $954.1K |
| Pappis Charles C | Dir | — | $510.4K |
Transactions 190
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2026-09-10 16:30 | 2026-09-08+ | ACMR | Wang David H | See Remarks, Dir, 10% | M - OptEx | $1.00 | +140.0K | 872.7K | +19% | +$140.0K |
| DMT | 2026-09-10 16:30 | 2026-09-08+ | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale+OE | $75.93 | -140.0K | 802.7K | -15% | -$10.63M |
| DMT | 2026-08-21 21:30 | 2026-08-20 | ACMR | McKechnie Mark | See Remarks | M - OptEx | $16.95 | +55.2K | 56.1K | +6,133% | +$935.8K |
| DMT | 2026-08-21 21:30 | 2026-08-20 | ACMR | McKechnie Mark | See Remarks | S - Sale+OE | $77.27 | -55.2K | 900 | -98% | -$4.26M |
| DT | 2026-08-20 16:30 | 2026-08-18 | ACMR | Dun Haiping | Dir | M - OptEx | $5.60 | +5,000 | 5,000 | New | +$28.0K |
| DMT | 2026-08-20 16:30 | 2026-08-18 | ACMR | Dun Haiping | Dir | S - Sale+OE | $81.13 | -5,000 | 0 | -100% | -$405.7K |
| DMT | 2026-06-05 21:00 | 2026-06-04+ | ACMR | Cheav Sotheara | See remarks | M - OptEx | $13.89 | +18.8K | 105.4K | +22% | +$260.4K |
| DMT | 2026-06-05 21:00 | 2026-06-04+ | ACMR | Cheav Sotheara | See remarks | S - Sale+OE | $84.58 | -18.8K | 100.0K | -16% | -$1.59M |
| DMT | 2026-06-05 16:30 | 2026-06-03+ | ACMR | Wang David H | See Remarks, Dir, 10% | M - OptEx | $1.00 | +100.0K | 842.7K | +13% | +$100.0K |
| DMT | 2026-06-05 16:30 | 2026-06-03+ | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale+OE | $88.35 | -100.0K | 802.7K | -11% | -$8.84M |
| DT | 2026-05-21 16:30 | 2026-05-19 | ACMR | Dun Haiping | Dir | M - OptEx | $5.60 | +5,000 | 5,000 | New | +$28.0K |
| DMT | 2026-05-21 16:30 | 2026-05-19 | ACMR | Dun Haiping | Dir | S - Sale+OE | $66.22 | -5,000 | 0 | -100% | -$331.1K |
| DT | 2026-04-21 16:30 | 2026-04-17 | ACMR | Pappis Charles C | Dir | M - OptEx | $29.18 | +5,000 | 5,000 | New | +$145.9K |
| DT | 2026-04-21 16:30 | 2026-04-17 | ACMR | Pappis Charles C | Dir | S - Sale+OE | $52.00 | -5,000 | 0 | -100% | -$260.0K |
| DMT | 2026-03-13 | 2026-03-11+ | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale+OE | $46.86 | -110.0K | 803.4K | -12% | -$5.15M |
| DMT | 2026-03-13 | 2026-03-11+ | ACMR | Wang David H | See Remarks, Dir, 10% | M - OptEx | $1.00 | +110.0K | 852.7K | +15% | +$110.0K |
| DMT | 2026-03-13 | 2026-03-12 | ACMR | McKechnie Mark | See Remarks | S - Sale+OE | $45.58 | -98.6K | 49.0K | -67% | -$4.49M |
| DMT | 2026-03-13 | 2026-03-12 | ACMR | McKechnie Mark | See Remarks | M - OptEx | $16.08 | +98.6K | 60.9K | New | +$1.58M |
| DMT | 2026-03-12 | 2026-03-10+ | ACMR | Liu Tracy | Dir | S - Sale+OE | $47.51 | -60.0K | 123.6K | -33% | -$2.85M |
| DMT | 2026-03-12 | 2026-03-10+ | ACMR | Liu Tracy | Dir | M - OptEx | $1.00 | +60.0K | 155.8K | +63% | +$60.0K |
| DMT | 2026-03-11 | 2026-03-09 | ACMR | Dun Haiping | Dir | S - Sale+OE | $43.47 | -5,000 | 900 | -85% | -$217.4K |
| DT | 2026-03-11 | 2026-03-09 | ACMR | Dun Haiping | Dir | M - OptEx | $5.60 | +5,000 | 5,000 | New | +$28.0K |
| DMT | 2026-03-09 | 2026-03-05+ | ACMR | Feng Lisa | See remarks | M - OptEx | $4.55 | +30.0K | 65.0K | +86% | +$136.5K |
| DMT | 2026-03-09 | 2026-03-05+ | ACMR | Feng Lisa | See remarks | S - Sale+OE | $48.04 | -30.0K | 57.0K | -35% | -$1.44M |
| DT | 2026-03-09 | 2026-03-05 | ACMR | Pappis Charles C | Dir | S - Sale+OE | $50.09 | -5,000 | 0 | -100% | -$250.5K |
| DT | 2026-03-09 | 2026-03-05 | ACMR | Pappis Charles C | Dir | M - OptEx | $29.18 | +5,000 | 5,000 | New | +$145.9K |
| DMT | 2025-12-08 | 2025-12-04+ | ACMR | McKechnie Mark | See Remarks | S - Sale+OE | $34.93 | -31.2K | 900 | -97% | -$1.09M |
| DMT | 2025-12-08 | 2025-12-04+ | ACMR | McKechnie Mark | See Remarks | M - OptEx | $19.60 | +31.2K | 9,650 | New | +$612.4K |
| DMT | 2025-12-05 | 2025-12-03+ | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale+OE | $33.55 | -130.0K | 802.7K | -14% | -$4.36M |
| DMT | 2025-12-05 | 2025-12-03+ | ACMR | Wang David H | See Remarks, Dir, 10% | M - OptEx | $1.00 | +130.0K | 872.7K | +18% | +$130.0K |
| DMT | 2025-12-04 | 2025-12-02+ | ACMR | Chen Fuping | See remarks | S - Sale+OE | $33.18 | -120.0K | 0 | -100% | -$3.98M |
| DMT | 2025-12-04 | 2025-12-02+ | ACMR | Chen Fuping | See remarks | M - OptEx | $1.77 | +120.0K | 20.0K | New | +$212.4K |
| 2025-11-14 | 2025-11-12 | ACMR | Dun Haiping | Dir | G - Gift | $0.00 | -755.1K | 0 | -100% | $0 | |
| DMT | 2025-11-14 | 2025-11-12+ | ACMR | Feng Lisa | See remarks | M - OptEx | $5.60 | +30.0K | 65.0K | +86% | +$168.0K |
| DMT | 2025-11-14 | 2025-11-12+ | ACMR | Feng Lisa | See remarks | S - Sale+OE | $33.27 | -30.0K | 50.0K | -37% | -$998.0K |
| D | 2025-09-30 | 2025-09-08 | ACMR | Wang David H | See Remarks, Dir, 10% | M - OptEx | $1.00 | +130.0K | 802.7K | +19% | +$130.0K |
| DT | 2025-09-19 | 2025-09-18 | ACMR | Wang Jian | See remarks | M - OptEx | $5.60 | +30.0K | 283.2K | +12% | +$168.0K |
| DT | 2025-09-19 | 2025-09-18 | ACMR | Wang Jian | See remarks | S - Sale+OE | $35.00 | -30.0K | 253.2K | -11% | -$1.05M |
| DT | 2025-09-19 | 2025-09-17 | ACMR | Liu Tracy | Dir | M - OptEx | $1.00 | +15.0K | 125.8K | +14% | +$15.0K |
| DT | 2025-09-19 | 2025-09-17 | ACMR | Liu Tracy | Dir | S - Sale+OE | $33.00 | -15.0K | 110.8K | -12% | -$495.0K |
| DT | 2025-09-19 | 2025-09-18 | ACMR | Cheav Sotheara | See remarks | S - Sale+OE | $35.00 | -10.0K | 100.0K | -9% | -$350.0K |
| DT | 2025-09-19 | 2025-09-18 | ACMR | Cheav Sotheara | See remarks | M - OptEx | $13.89 | +10.0K | 110.0K | +10% | +$138.9K |
| DMT | 2025-09-05 | 2025-09-03+ | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale+OE | $26.61 | -130.0K | 676.7K | -16% | -$3.46M |
| DMT | 2025-09-05 | 2025-09-03+ | ACMR | Wang David H | See Remarks, Dir, 10% | M - OptEx | $1.00 | +130.0K | 742.7K | +21% | +$130.0K |
| DT | 2025-08-26 | 2025-08-22 | ACMR | Cheav Sotheara | See remarks | S - Sale+OE | $30.00 | -11.2K | 100.0K | -10% | -$334.6K |
| DT | 2025-08-26 | 2025-08-22 | ACMR | Cheav Sotheara | See remarks | M - OptEx | $13.89 | +11.2K | 111.2K | +11% | +$154.9K |
| DMT | 2025-08-26 | 2025-08-22+ | ACMR | Wang Jian | See remarks | M - OptEx | $5.60 | +60.0K | 283.2K | +27% | +$336.0K |
| DMT | 2025-08-26 | 2025-08-22+ | ACMR | Wang Jian | See remarks | S - Sale+OE | $31.00 | -60.0K | 253.2K | -19% | -$1.86M |
| DT | 2025-07-17 | 2025-07-15 | ACMR | Liu Tracy | Dir | S - Sale+OE | $30.00 | -15.0K | 110.8K | -12% | -$450.0K |
| DT | 2025-07-17 | 2025-07-15 | ACMR | Liu Tracy | Dir | M - OptEx | $1.00 | +15.0K | 125.8K | +14% | +$15.0K |
| DT | 2025-07-09 | 2025-07-07 | ACMR | Feng Lisa | See remarks | M - OptEx | $5.60 | +15.0K | 65.0K | +30% | +$84.0K |
| DT | 2025-07-09 | 2025-07-07 | ACMR | Feng Lisa | See remarks | S - Sale+OE | $28.00 | -15.0K | 50.0K | -23% | -$420.0K |
| DT | 2025-06-26 | 2025-06-24 | ACMR | Feng Lisa | See remarks | S - Sale+OE | $26.00 | -15.0K | 50.0K | -23% | -$390.0K |
| DT | 2025-06-26 | 2025-06-24 | ACMR | Feng Lisa | See remarks | M - OptEx | $5.60 | +15.0K | 65.0K | +30% | +$84.0K |
| DMT | 2025-05-23 | 2025-05-21+ | ACMR | Wang David H | See Remarks, Dir, 10% | M - OptEx | $1.00 | +130.0K | 732.7K | +22% | +$130.0K |
| DMT | 2025-05-23 | 2025-05-21+ | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale+OE | $23.15 | -130.0K | 672.7K | -16% | -$3.01M |
| DT | 2025-05-16 | 2025-05-14 | ACMR | McKechnie Mark | See Remarks | M - OptEx | $5.60 | +15.0K | 15.9K | +1,667% | +$84.0K |
| DT | 2025-05-16 | 2025-05-14 | ACMR | McKechnie Mark | See Remarks | S - Sale+OE | $25.22 | -15.0K | 900 | -94% | -$378.3K |
| T | 2025-03-19 | 2025-03-17 | ACMR | Hu Chenming | Dir | S - Sale | $30.00 | -163.3K | 100.0K | -62% | -$4.90M |
| MT | 2025-03-18 | 2025-03-14 | ACMR | Dun Haiping | Dir | S - Sale | $29.00 | -9,518 | 762.2K | -1% | -$276.0K |
| DT | 2025-03-14 | 2025-03-12 | ACMR | McKechnie Mark | See Remarks | S - Sale+OE | $27.42 | -15.0K | 900 | -94% | -$411.3K |
| DT | 2025-03-14 | 2025-03-12 | ACMR | McKechnie Mark | See Remarks | M - OptEx | $5.60 | +15.0K | 15.9K | +1,667% | +$84.0K |
| MT | 2025-03-13 | 2025-03-11+ | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale | $27.02 | -131.2K | 710.2K | -16% | -$3.55M |
| T | 2025-03-12 | 2025-03-10 | ACMR | Dun Haiping | Dir | S - Sale | $26.54 | -15.0K | 764.6K | -2% | -$398.1K |
| D | 2025-03-05 | 2025-03-03 | ACMR | Wang David H | See Remarks, Dir, 10% | M - OptEx | $0.5 | +210.0K | 808.0K | +35% | +$105.0K |
| D | 2025-03-05 | 2025-03-03 | ACMR | Wang David H | See Remarks, Dir, 10% | F - Tax | $25.94 | -4,048 | 804.0K | -0.5% | -$105.0K |
| D | 2025-03-05 | 2025-03-03 | ACMR | Dun Haiping | Dir | M - OptEx | $0.5 | +25.0K | 780.1K | +3% | +$12.5K |
| D | 2025-03-05 | 2025-03-03 | ACMR | Dun Haiping | Dir | F - Tax | $25.94 | -482 | 779.6K | -0.1% | -$12.5K |
| DT | 2025-02-10 | 2025-02-06 | ACMR | McKechnie Mark | See Remarks | M - OptEx | $5.60 | +15.0K | 15.9K | +1,667% | +$84.0K |
| DT | 2025-02-10 | 2025-02-06 | ACMR | McKechnie Mark | See Remarks | S - Sale+OE | $22.00 | -15.0K | 900 | -94% | -$330.0K |
| DMT | 2025-02-10 | 2025-02-06 | ACMR | Cheav Sotheara | See remarks | M - OptEx | $13.89 | +22.6K | 122.6K | +23% | +$313.9K |
| DT | 2025-02-10 | 2025-02-06 | ACMR | Cheav Sotheara | See remarks | S - Sale+OE | $23.00 | -22.6K | 100.0K | -18% | -$519.8K |
| T | 2024-12-03 | 2024-11-29 | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale | $17.44 | -56.2K | 598.0K | -9% | -$981.0K |
| T | 2024-12-03 | 2024-11-29 | ACMR | Dun Haiping | Dir | S - Sale | $17.43 | -19.1K | 755.1K | -2% | -$332.2K |
| MT | 2024-11-29 | 2024-11-26 | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale | $17.89 | -56.2K | 663.7K | -8% | -$1.01M |
| T | 2024-11-26 | 2024-11-22 | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale | $19.08 | -56.2K | 710.5K | -7% | -$1.07M |
| T | 2024-11-26 | 2024-11-22 | ACMR | Dun Haiping | Dir | S - Sale | $19.12 | -15.0K | 774.1K | -2% | -$286.8K |
| D | 2024-11-18 | 2024-11-14 | ACMR | Wang David H | See Remarks, Dir, 10% | M - OptEx | $0.5 | +270.0K | 774.0K | +54% | +$135.0K |
| D | 2024-11-18 | 2024-11-14 | ACMR | Wang David H | See Remarks, Dir, 10% | F - Tax | $18.59 | -7,262 | 766.8K | -0.9% | -$135.0K |
| D | 2024-11-18 | 2024-11-14 | ACMR | Dun Haiping | Dir | F - Tax | $18.59 | -942 | 789.1K | -0.1% | -$17.5K |
| D | 2024-11-18 | 2024-11-14 | ACMR | Dun Haiping | Dir | M - OptEx | $0.5 | +35.0K | 790.1K | +5% | +$17.5K |
| MTI | 2024-10-08 | 2024-10-04+ | ACMR | Xing Xiao | Dir | S - Sale | $22.07 | -1.07M | 2.43M | -30% | -$23.52M |
| DT | 2024-10-08 | 2024-10-04 | ACMR | McKechnie Mark | See Remarks | M - OptEx | $5.60 | +16.5K | 17.4K | +1,835% | +$92.5K |
| DT | 2024-10-08 | 2024-10-04 | ACMR | McKechnie Mark | See Remarks | S - Sale+OE | $22.00 | -16.5K | 900 | -95% | -$363.4K |
| M | 2024-10-08 | 2024-10-04+ | ACMR | Shanghai Pudong Science & Technology Investment Group Co., Ltd. | 10%, Possible member of 10% group | S - Sale | $22.08 | -1.07M | 2.83M | -27% | -$23.52M |
| MTI | 2024-10-03 | 2024-10-01+ | ACMR | Xing Xiao | Dir | S - Sale | $20.05 | -34.6K | 3.43M | -1.0% | -$693.9K |
| M | 2024-10-03 | 2024-10-01+ | ACMR | Shanghai Science & Technology Venture Capital (Group) Co., Ltd. | 10%, Possible member of 10% group | S - Sale | $20.05 | -34.6K | 3.40M | -1% | -$693.9K |
| T | 2024-09-03 | 2024-08-29 | ACMR | Dun Haiping | Dir | S - Sale | $18.08 | -19.1K | 755.1K | -2% | -$345.3K |
| T | 2024-08-26 | 2024-08-22 | ACMR | Dun Haiping | Dir | S - Sale | $19.85 | -15.0K | 774.2K | -2% | -$297.8K |
| D | 2024-08-16 | 2024-08-14 | ACMR | Dun Haiping | Dir | F - Tax | $19.38 | -903 | 789.2K | -0.1% | -$17.5K |
| D | 2024-08-16 | 2024-08-14 | ACMR | Dun Haiping | Dir | M - OptEx | $0.5 | +35.0K | 790.1K | +5% | +$17.5K |
| M | 2024-07-01 | 2024-06-27 | ACMR | Dun Haiping | Dir | G - Gift | $0.00 | -400.0K | 755.1K | -35% | $0 |
| DMT | 2024-06-12 | 2024-06-10+ | ACMR | Wang Jian | See remarks | S - Sale+OE | $22.54 | -60.0K | 254.8K | -19% | -$1.35M |
| DMT | 2024-06-12 | 2024-06-10+ | ACMR | Wang Jian | See remarks | M - OptEx | $4.62 | +60.0K | 283.2K | +27% | +$277.2K |
| DMT | 2024-06-07 | 2024-06-06 | ACMR | McKechnie Mark | See Remarks | M - OptEx | $4.91 | +20.0K | 6,884 | New | +$98.3K |
| DMT | 2024-06-07 | 2024-06-06 | ACMR | McKechnie Mark | See Remarks | S - Sale+OE | $22.92 | -20.0K | 900 | -96% | -$458.4K |
| DMT | 2024-06-07 | 2024-06-06+ | ACMR | Wang Jian | See remarks | M - OptEx | $4.62 | +60.0K | 283.2K | +27% | +$277.2K |
| DMT | 2024-06-07 | 2024-06-06+ | ACMR | Wang Jian | See remarks | S - Sale+OE | $22.50 | -60.0K | 253.2K | -19% | -$1.35M |
| T | 2024-05-31 | 2024-05-29 | ACMR | Dun Haiping | Dir | S - Sale | $22.63 | -19.2K | 855.1K | -2% | -$435.4K |
| MT | 2024-05-31 | 2024-05-29 | ACMR | Wang David H | See Remarks, Dir, 10% | S - Sale | $22.62 | -86.1K | 504.0K | -15% | -$1.95M |
Purchase Sale Sale after option exercise All abbreviations