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
- David H Wang (Insider) and 2 others sold $15.3M in the last 90 days.
- Last insider buy: Michael Joyce (Director), $14.1K, 16 years ago.
Last 12 months: insiders bought $0 (0 buys) and sold $51.2M (17 sales). Last close $49.12 on Oct 22, 2026.
Recent ACMR insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Sep 9, 2026 | David H Wang (Insider) | Sold | $2.5M |
| Sep 9, 2026 | David H Wang (Insider) | Sold | $1.4M |
| Sep 9, 2026 | David H Wang (Insider) | Sold | $882K |
| Sep 9, 2026 | David H Wang (Insider) | Sold | $369K |
| Sep 9, 2026 | David H Wang (Insider) | Sold | $85.3K |
| Sep 9, 2026 | David H Wang (Insider) | Bought (not open market) | $70K |
| Sep 9, 2026 | David H Wang (Insider) | Bought (not open market) | — |
| Sep 8, 2026 | David H Wang (Insider) | Sold | $4M |
| Sep 8, 2026 | David H Wang (Insider) | Sold | $962K |
| Sep 8, 2026 | David H Wang (Insider) | Sold | $365K |
| Sep 8, 2026 | David H Wang (Insider) | Sold | $118K |
| Sep 8, 2026 | David H Wang (Insider) | Bought (not open market) | $70K |
| Sep 8, 2026 | David H Wang (Insider) | Bought (not open market) | — |
| Aug 20, 2026 | Mark McKechnie (Insider) | Sold | $2.4M |
| Aug 20, 2026 | Mark McKechnie (Insider) | Sold | $1M |
| Aug 20, 2026 | Mark McKechnie (Insider) | Sold | $873K |
| Aug 20, 2026 | Mark McKechnie (Insider) | Bought (not open market) | $589K |
| Aug 20, 2026 | Mark McKechnie (Insider) | Bought (not open market) | $347K |
| Aug 20, 2026 | Mark McKechnie (Insider) | Bought (not open market) | — |
| Aug 20, 2026 | Mark McKechnie (Insider) | Bought (not open market) | — |
| Aug 18, 2026 | Haiping Dun (Insider) | Sold | $276K |
| Aug 18, 2026 | Haiping Dun (Insider) | Sold | $96.3K |
| Aug 18, 2026 | Haiping Dun (Insider) | Sold | $32.9K |
| Aug 18, 2026 | Haiping Dun (Insider) | Bought (not open market) | $28K |
| Aug 18, 2026 | Haiping Dun (Insider) | Bought (not open market) | — |
Who's trading ACMR
- David H Wang, Insider: sold $29M (29 sales), last Sep 9, 2026
- Mark McKechnie, Insider: sold $9.8M (12 sales), last Aug 20, 2026
- Haiping Dun, Insider: sold $954K (9 sales), last Aug 18, 2026
- Tracy Liu, Insider: sold $2.9M (4 sales), last Aug 12, 2026
- Charles C Pappis, Insider: sold $510K (2 sales), last Aug 12, 2026
- Sotheara Cheav, Insider: sold $1.6M (7 sales), last Jun 5, 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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