Insider · CIK 0001721581
Haiping Dun
Files at: ACMR. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 18, 2026 SForm 4 → | Aug 20, 4:30 pm EDT | ACM Research, Inc.ACMR | 5,000 | $81.13 | $405,670 | 0 | −100% | 10b5-1 |
| Aug 18, 2026 MForm 4 → | Aug 20, 4:30 pm EDT | ACM Research, Inc.ACMR | 5,000 | $5.60 | $28,000 | 5,000 | — | 10b5-1 |
Reported trades — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 18, 2026 MForm 4 → | Aug 20, 4:30 pm EDT | ACM Research, Inc.ACMR | 5,000 | — | — | 45,000 | — | 10b5-1 |
| Aug 12, 2026 AForm 4 → | Aug 26, 9:30 pm EDT | ACM Research, Inc.ACMR | 7,128 | — | — | 728 | — | late |