ACMR ACM Research, Inc.
ACM Research, Inc. (ACMR) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 100% planned / 0% discretionary
Largest single sale: $4.0M.
Where they traded
No open-market insider purchase on record.
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Wang David H 5 fills | See Remarks | Sell 10b5-1 | 70,000 | $74.59 | $5.2M | 839,215 −7.7% of holding | |
| Wang David H 4 fills | See Remarks | Sell 10b5-1 | 70,000 | $77.26 | $5.4M | 867,905 −7.5% of holding | |
| McKechnie Mark 3 fills | See Remarks | Sell 10b5-1 | 55,199 | $77.27 | $4.3M | 42,474 −56.5% of holding | |
| Dun Haiping 3 fills | Director | Sell 10b5-1 | 5,000 | $81.13 | $405.7K | 3,800 −56.8% of holding | |
| Cheav Sotheara 4 fills | See remarks | Sell 10b5-1 | 5,399 | $83.18 | $449.1K | 103,017 −5% of holding | |
| Wang David H 5 fills | See Remarks | Sell 10b5-1 | 40,002 | $85.80 | $3.4M | 840,650 −4.5% of holding | |
| Cheav Sotheara 3 fills | See remarks | Sell 10b5-1 | 13,351 | $85.15 | $1.1M | 112,053 −10.6% of holding | |
| Wang David H 6 fills | See Remarks | Sell 10b5-1 | 60,000 | $90.05 | $5.4M | 858,408 −6.5% of holding | |
| Dun Haiping 4 fills | Director | Sell 10b5-1 | 5,000 | $66.22 | $331.1K | 3,667 −57.7% of holding | |
| Pappis Charles C | Director | Sell 10b5-1 | 5,000 | $52.00 | $260.0K | None left | |
| McKechnie Mark 6 fills | See Remarks | Sell 10b5-1 | 98,551 | $45.58 | $4.5M | 48,990 −66.8% of holding | |
| Wang David H 3 fills | See Remarks | Sell 10b5-1 | 50,000 | $45.58 | $2.3M | 842,147 −5.6% of holding | |
| Wang David H 2 fills | See Remarks | Sell 10b5-1 | 60,000 | $47.92 | $2.9M | 807,335 −6.9% of holding | |
| Liu Tracy 2 fills | Director | Sell 10b5-1 | 15,000 | $47.91 | $718.6K | 114,149 −11.6% of holding | |
| Liu Tracy 2 fills | Director | Sell 10b5-1 | 45,000 | $47.38 | $2.1M | 123,556 −26.7% of holding | |
| Dun Haiping 2 fills | Director | Sell 10b5-1 | 5,000 | $43.47 | $217.4K | 900 −84.7% of holding | |
| Feng Lisa 2 fills | See remarks | Sell 10b5-1 | 15,000 | $46.08 | $691.2K | 50,201 −23% of holding | |
| Feng Lisa 2 fills | See remarks | Sell 10b5-1 | 15,000 | $50.01 | $750.1K | 56,951 −20.8% of holding | |
| Pappis Charles C | Director | Sell 10b5-1 | 5,000 | $50.09 | $250.5K | None left | |
| McKechnie Mark | See Remarks | Sell 10b5-1 | 22,500 | $35.45 | $797.6K | 900 −96.2% of holding | |
| Wang David H 2 fills | See Remarks | Sell 10b5-1 | 60,000 | $34.12 | $2.0M | 842,891 −6.6% of holding | |
| McKechnie Mark 2 fills | See Remarks | Sell 10b5-1 | 8,750 | $33.59 | $293.9K | 1,896 −82.2% of holding | |
| Wang David H 2 fills | See Remarks | Sell 10b5-1 | 70,000 | $33.06 | $2.3M | 803,908 −8% of holding | |
| Chen Fuping 2 fills | See remarks | Sell 10b5-1 | 20,000 | $33.06 | $661.2K | 300 −98.5% of holding | |
| Chen Fuping | See remarks | Sell 10b5-1 | 100,000 | $33.20 | $3.3M | None left | |
| Feng Lisa | See remarks | Sell 10b5-1 | 15,000 | $33.77 | $506.6K | 50,001 −23.1% of holding | |
| Feng Lisa | See remarks | Sell 10b5-1 | 15,000 | $32.76 | $491.4K | 50,001 −23.1% of holding | |
| Wang Jian | See remarks | Sell 10b5-1 | 30,000 | $35.00 | $1.1M | 253,158 −10.6% of holding | |
| Cheav Sotheara | See remarks | Sell 10b5-1 | 10,000 | $35.00 | $350.0K | 100,002 −9.1% of holding | |
| Liu Tracy | Director | Sell 10b5-1 | 15,000 | $33.00 | $495.0K | 110,772 −11.9% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.