ACM Research, Inc (ACMR) insider trading
Every open-market stock purchase and sale by ACM Research, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Insiders sold $35.9M over the last 12 months (14 sales). No open-market buys.
- Last insider buy: Michael Joyce (Director), $14.1K, 16 years ago.
Last 12 months: insiders bought $0 (0 buys) and sold $35.9M (14 sales). Last close $79.96 on Jun 10, 2026.
Recent ACMR insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Jun 5, 2026 | Sotheara Cheav (Insider) | Sold | $195K |
| Jun 5, 2026 | Sotheara Cheav (Insider) | Sold | $141K |
| Jun 5, 2026 | Sotheara Cheav (Insider) | Sold | $80K |
| Jun 5, 2026 | Sotheara Cheav (Insider) | Sold | $33.6K |
| Jun 5, 2026 | Sotheara Cheav (Insider) | Bought (not open market) | — |
| Jun 4, 2026 | David H Wang (Insider) | Sold | $1.5M |
| Jun 4, 2026 | David H Wang (Insider) | Sold | $946K |
| Jun 4, 2026 | Sotheara Cheav (Insider) | Sold | $784K |
| Jun 4, 2026 | David H Wang (Insider) | Sold | $748K |
| Jun 4, 2026 | Sotheara Cheav (Insider) | Sold | $244K |
| Jun 4, 2026 | David H Wang (Insider) | Sold | $173K |
| Jun 4, 2026 | Sotheara Cheav (Insider) | Sold | $109K |
| Jun 4, 2026 | David H Wang (Insider) | Sold | $72.6K |
| Jun 4, 2026 | Sotheara Cheav (Insider) | Bought (not open market) | — |
| Jun 4, 2026 | David H Wang (Insider) | Bought (not open market) | — |
| Jun 3, 2026 | David H Wang (Insider) | Sold | $2.9M |
| Jun 3, 2026 | David H Wang (Insider) | Sold | $901K |
| Jun 3, 2026 | David H Wang (Insider) | Sold | $560K |
| Jun 3, 2026 | David H Wang (Insider) | Sold | $540K |
| Jun 3, 2026 | David H Wang (Insider) | Sold | $377K |
| Jun 3, 2026 | David H Wang (Insider) | Sold | $110K |
| Jun 3, 2026 | David H Wang (Insider) | Bought (not open market) | — |
| May 19, 2026 | Haiping Dun (Insider) | Sold | $125K |
| May 19, 2026 | Haiping Dun (Insider) | Sold | $88K |
| May 19, 2026 | Haiping Dun (Insider) | Sold | $85.1K |
Who's trading ACMR
- Sotheara Cheav, Insider: sold $1.6M (7 sales), last Jun 5, 2026
- David H Wang, Insider: sold $18.4M (20 sales), last Jun 4, 2026
- Haiping Dun, Insider: sold $548K (6 sales), last May 19, 2026
- Charles C Pappis, Insider: sold $510K (2 sales), last Apr 17, 2026
- Mark McKechnie, Insider: sold $5.6M (9 sales), last Mar 12, 2026
- Tracy Liu, Insider: sold $2.9M (4 sales), last Mar 11, 2026
- Lisa Feng, Insider: sold $2.4M (6 sales), last Mar 6, 2026
- Fuping Chen, Insider: sold $4M (3 sales), last Dec 3, 2025
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