Company · CIK 0001680062 · SIC 3559 — Special Industry Machinery, NEC · Nasdaq
ACM Research, Inc. · ACMR
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 8, 2026 SForm 4 → | Sep 10, 4:30 pm EDT | David H WangSee Remarks, Director, 10% Owner | 140,000 | $75.93 | $10,630,010 | 802,708 | −14.9% | 10b5-1 |
| Sep 8, 2026 MForm 4 → | Sep 10, 4:30 pm EDT | David H WangSee Remarks, Director, 10% Owner | 140,000 | $1.00 | $140,000 | 872,708 | — | 10b5-1 |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 8, 2026 MForm 4 → | Sep 10, 4:30 pm EDT | David H WangSee Remarks, Director, 10% Owner | 140,000 | — | — | 130,000 | — | 10b5-1 |