🕵️ ACM Research, Inc. ($ACMR)
SEC insider & ownership activity, last 12 months · CIK 1680062 · every row links its SEC filing
Over the last 12 months insiders sold $53.0M with no open-market buying against it. Hui Wang sold $29.0M through a program of 8 sale notices averaging $3.6M (Dec–Sep). 1 planned sale is pending, the largest $5.4M (Hui Wang). No red-flag 8-Ks in the window.
🚨 9 signals active —
planned-vs-executed verdicts, pre-event flags, and cluster context live in the
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 9 sellers, $53.0M (75 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Hui Wang | 0 | – | 29 | $29.0M | Sep 9, 2026 |
| Mark A. McKechnie | 0 | – | 12 | $9.8M | Aug 20, 2026 |
| Fuping Chen | 0 | – | 3 | $4.0M | Dec 3, 2025 |
| Liu Tracy | 0 | – | 5 | $3.3M | Mar 11, 2026 |
| Lisa Yi Lu Feng | 0 | – | 6 | $2.4M | Mar 6, 2026 |
| Sotheara Cheav | 0 | – | 8 | $1.9M | Jun 5, 2026 |
| Jian Wang | 0 | – | 1 | $1.1M | Sep 18, 2025 |
| Haiping Dun | 0 | – | 9 | $954K | Aug 18, 2026 |
| Charles Pappis | 0 | – | 2 | $510K | Apr 17, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| BlackRock, Inc. | 12.6% | 13G | Oct 2, 2025 | filing ↗ | |
| Vanguard Portfolio Management | 5.3% | 13G | Jul 31, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Hui Wang | $5.2M | Sep 9, 2026 | filing ↗ |
| Hui Wang | $5.4M | Sep 8, 2026 | filing ↗ |
| Mark A. McKechnie | $4.3M | Aug 20, 2026 | filing ↗ |
| Haiping Dun | $406K | Aug 18, 2026 | filing ↗ |
| Sotheara Cheav | $449K | Jun 5, 2026 | filing ↗ |
| Hui Wang | $3.4M | Jun 4, 2026 | filing ↗ |
| Sotheara Cheav | $1.1M | Jun 4, 2026 | filing ↗ |
| Hui Wang | $5.4M | Jun 3, 2026 | filing ↗ |
| Haiping Dun | $331K | May 19, 2026 | filing ↗ |
| Charles Pappis | $260K | Apr 17, 2026 | filing ↗ |
| Hui Wang | $2.3M | Mar 12, 2026 | filing ↗ |
| Mark A. McKechnie | $4.5M | Mar 12, 2026 | filing ↗ |
| Tracy Dong Liu | $719K | Mar 11, 2026 | filing ↗ |
| Hui Wang | $2.9M | Mar 11, 2026 | filing ↗ |
| Tracy Dong Liu | $2.1M | Mar 10, 2026 | filing ↗ |
| Haiping Dun | $217K | Mar 9, 2026 | filing ↗ |
| Lisa Yi Lu Feng | $691K | Mar 6, 2026 | filing ↗ |
| Charles Pappis | $250K | Mar 5, 2026 | filing ↗ |
| Lisa Yi Lu Feng | $750K | Mar 5, 2026 | filing ↗ |
| Mark A. McKechnie | $798K | Dec 8, 2025 | filing ↗ |
| Mark A. McKechnie | $294K | Dec 4, 2025 | filing ↗ |
| Hui Wang | $2.0M | Dec 4, 2025 | filing ↗ |
| Fuping Chen | $661K | Dec 3, 2025 | filing ↗ |
| Hui Wang | $2.3M | Dec 3, 2025 | filing ↗ |
| Fuping Chen | $3.3M | Dec 2, 2025 | filing ↗ |
| Lisa Yi Lu Feng | $507K | Nov 13, 2025 | filing ↗ |
| Lisa Yi Lu Feng | $491K | Nov 12, 2025 | filing ↗ |
| Jian Wang | $1.1M | Sep 18, 2025 | filing ↗ |
| Sotheara Cheav | $350K | Sep 18, 2025 | filing ↗ |
| Tracy Dong Liu | $495K | Sep 17, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Other events (8.01) | Aug 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 17, 2026 | filing ↗ |
| Earnings (2.02) | Aug 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 7, 2026 | filing ↗ |
| Other events (8.01) | Jun 18, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 18, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 10, 2026 | filing ↗ |
| Other events (8.01) | May 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 26, 2026 | filing ↗ |
| Other events (8.01) | May 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 19, 2026 | filing ↗ |
| Other events (8.01) | May 15, 2026 | filing ↗ |
| Material agreement (1.01) | May 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Earnings (2.02) | Apr 27, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 27, 2026 | filing ↗ |
| Other events (8.01) | Apr 17, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 17, 2026 | filing ↗ |
| Other events (8.01) | Mar 24, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 24, 2026 | filing ↗ |
| Other events (8.01) | Mar 13, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 13, 2026 | filing ↗ |
| Earnings (2.02) | Feb 26, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 26, 2026 | filing ↗ |
| Other events (8.01) | Feb 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 6, 2026 | filing ↗ |
| Other events (8.01) | Feb 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 4, 2026 | filing ↗ |