Wang David H's Form 4 filing
ACM Research, Inc. (ACMR) · filed Sep 10, 2026
- Accession no.
- 0001140361-26-036191
- Filed
- Sep 10, 2026, 4:30 PM ET
- Trade date
- Sep 8-9, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Checked
This filing lists 11 non-derivative transactions and 2 derivative transactions. Open-market sales total $10.6M. It was filed 2 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Wang David HCIK 0001721580 | Director, Officer (See Remarks), 10% Owner |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 8, 2026 | Class A Common Stock | MOption exerciseAcquired | +70,000 | $1.00 | +$70,000 | 872,708 | Direct | |
| Sep 8, 2026 | Class A Common Stock | SSaleDisposed | −4,803 | $75.99 | −$364,979.97 | 867,905 | Direct | |
| Sep 8, 2026 | Class A Common Stock | SSaleDisposed | −51,374 | $77.15 | −$3,963,504.1 | 816,531 | Direct | |
| Sep 8, 2026 | Class A Common Stock | SSaleDisposed | −12,323 | $78.08 | −$962,179.84 | 804,208 | Direct | |
| Sep 8, 2026 | Class A Common Stock | SSaleDisposed | −1,500 | $78.57 | −$117,855 | 802,708 | Direct | |
| Sep 9, 2026 | Class A Common Stock | MOption exerciseAcquired | +70,000 | $1.00 | +$70,000 | 872,708 | Direct | |
| Sep 9, 2026 | Class A Common Stock | SSaleDisposed | −33,493 | $73.80 | −$2,471,783.4 | 839,215 | Direct | |
| Sep 9, 2026 | Class A Common Stock | SSaleDisposed | −18,934 | $74.67 | −$1,413,801.78 | 820,281 | Direct | |
| Sep 9, 2026 | Class A Common Stock | SSaleDisposed | −11,666 | $75.58 | −$881,716.28 | 808,615 | Direct | |
| Sep 9, 2026 | Class A Common Stock | SSaleDisposed | −4,807 | $76.73 | −$368,841.11 | 803,808 | Direct | |
| Sep 9, 2026 | Class A Common Stock | SSaleDisposed | −1,100 | $77.59 | −$85,349 | 802,708 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 8, 2026 | Class A Common Stock | MOption exerciseDisposed | −70,000 | $0.00 | $0 | 200,000 | Direct | |
| Sep 9, 2026 | Class A Common Stock | MOption exerciseDisposed | −70,000 | $0.00 | $0 | 130,000 | Direct |
Footnotes
Livermore does not store Form 4 footnotes. For price ranges, how indirect holdings are held and trading plan details, read the original on SEC EDGAR.