There have been 50 recent insider transactions recorded for ACM Research, Inc. (ACMR), including 7 buys and 41 sells. Total insider buying was valued at $9.83M and total insider selling at $18.42M.
Notable insiders with recent activity include Wang David H, Mckechnie Mark, Liu Tracy. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — ACMR
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-12 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
50,000 |
$1.00 |
$50K |
370,002 |
| 2026-03-12 |
Mckechnie Mark |
See Remarks |
Informative Sell |
982 |
$46.55 |
$45.71K |
900 |
| 2026-03-11 |
Liu Tracy |
Director |
Option Exercise (Sell) |
15,000 |
$1.00 |
$15K |
- |
| 2026-03-11 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
60,000 |
$1.00 |
$60K |
420,002 |
| 2026-03-10 |
Liu Tracy |
Director |
Option Exercise (Sell) |
45,000 |
$1.00 |
$45K |
15,000 |
| 2026-03-09 |
Dun Haiping |
Director |
Informative Sell |
900 |
$43.94 |
$39.55K |
- |
| 2026-03-06 |
Feng Lisa |
See Remarks |
Option Exercise (Sell) |
15,000 |
$4.55 |
$68.25K |
- |
| 2026-03-05 |
Pappis Charles C |
Director |
Informative Sell |
5,000 |
$50.09 |
$250.45K |
- |
| 2026-03-05 |
Feng Lisa |
See Remarks |
Informative Sell |
6,950 |
$50.24 |
$349.17K |
50,001 |
| 2026-02-04 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
RSU Award |
545,400 |
$7.36 |
$4.01M |
1,636,197 |
| 2025-12-08 |
Mckechnie Mark |
See Remarks |
Option Exercise (Sell) |
22,500 |
$25.45 |
$572.63K |
- |
| 2025-12-04 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
60,000 |
$1.00 |
$60K |
480,002 |
| 2025-12-04 |
Mckechnie Mark |
See Remarks |
Option Exercise (Sell) |
8,750 |
$4.55 |
$39.81K |
- |
| 2025-12-03 |
Chen Fuping |
See Remarks |
Informative Sell |
300 |
$33.57 |
$10.07K |
- |
| 2025-12-03 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
70,000 |
$1.00 |
$70K |
540,002 |
| 2025-12-02 |
Chen Fuping |
See Remarks |
Informative Sell |
100,000 |
$33.20 |
$3.32M |
- |
| 2025-11-13 |
Feng Lisa |
See Remarks |
Option Exercise (Sell) |
15,000 |
$5.60 |
$84K |
- |
| 2025-11-12 |
Dun Haiping |
Director |
Gift (Given) |
755,090 |
- |
- |
- |
| 2025-11-12 |
Feng Lisa |
See Remarks |
Option Exercise (Sell) |
15,000 |
$5.60 |
$84K |
15,000 |
| 2025-10-27 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
RSU Award |
545,400 |
$7.36 |
$4.01M |
545,400 |
| 2025-09-18 |
Cheav Sotheara |
See Remarks |
Option Exercise (Sell) |
10,000 |
$13.89 |
$138.9K |
56,250 |
| 2025-09-18 |
Wang Jian |
See Remarks |
Option Exercise (Sell) |
30,000 |
$5.60 |
$168K |
- |
| 2025-09-17 |
Liu Tracy |
Director |
Option Exercise (Sell) |
15,000 |
$1.00 |
$15K |
60,000 |
| 2025-09-08 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
130,000 |
$1.00 |
$130K |
610,002 |
| 2025-09-04 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Informative Sell |
60,000 |
$26.44 |
$1.59M |
672,708 |
| 2025-09-03 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Informative Sell |
3,943 |
$27.31 |
$107.68K |
672,708 |
| 2025-08-25 |
Wang Jian |
See Remarks |
Option Exercise (Sell) |
30,000 |
$5.60 |
$168K |
30,000 |
| 2025-08-22 |
Cheav Sotheara |
See Remarks |
Option Exercise (Sell) |
11,152 |
$13.89 |
$154.9K |
66,250 |
| 2025-08-22 |
Wang Jian |
See Remarks |
Option Exercise (Sell) |
30,000 |
$5.60 |
$168K |
60,000 |
| 2025-08-12 |
Pappis Charles C |
Director |
RSU Award |
20,000 |
$24.93 |
$498.6K |
20,000 |
| 2025-08-12 |
Liu Tracy |
Director |
RSU Award |
20,000 |
$24.93 |
$498.6K |
20,000 |
| 2025-08-12 |
Dun Haiping |
Director |
RSU Award |
20,000 |
$24.93 |
$498.6K |
20,000 |
| 2025-07-15 |
Liu Tracy |
Director |
Option Exercise |
15,000 |
$1.00 |
$15K |
125,772 |
| 2025-06-24 |
Feng Lisa |
See Remarks |
Option Exercise (Sell) |
15,000 |
$5.60 |
$84K |
45,000 |
| 2025-05-22 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Informative Sell |
60,000 |
$22.63 |
$1.36M |
672,708 |
| 2025-05-21 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Informative Sell |
8 |
$24.04 |
$192.32 |
672,708 |
| 2025-05-14 |
Mckechnie Mark |
See Remarks |
Option Exercise (Sell) |
15,000 |
$5.60 |
$84K |
- |
| 2025-03-17 |
Hu Chenming |
Director |
Informative Sell |
163,308 |
$30.00 |
$4.9M |
100,002 |
| 2025-03-15 |
Pappis Charles C |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-03-15 |
Pappis Charles C |
Director |
RSU Award |
10,000 |
$29.18 |
$291.8K |
10,000 |
| 2025-03-14 |
Dun Haiping |
Director |
Informative Sell |
7,062 |
$29.23 |
$206.42K |
755,090 |
| 2025-03-13 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Informative Sell |
1,019 |
$27.65 |
$28.18K |
672,708 |
| 2025-03-12 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Informative Sell |
37,500 |
$27.42 |
$1.03M |
710,208 |
| 2025-03-12 |
Mckechnie Mark |
See Remarks |
Informative Sell |
15,000 |
$27.42 |
$411.3K |
900 |
| 2025-03-11 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Informative Sell |
56,250 |
$26.57 |
$1.49M |
747,708 |
| 2025-03-10 |
Dun Haiping |
Director |
Informative Sell |
15,001 |
$26.54 |
$398.13K |
764,608 |
| 2025-03-03 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
210,000 |
$0.50 |
$105K |
- |
| 2025-03-03 |
Dun Haiping |
Director |
Option Exercise (Sell) |
25,001 |
$0.50 |
$12.5K |
- |
| 2025-02-06 |
Cheav Sotheara |
See Remarks |
Option Exercise (Sell) |
12,598 |
$13.89 |
$174.99K |
77,402 |
| 2025-02-06 |
Mckechnie Mark |
See Remarks |
Informative Sell |
15,000 |
$22.00 |
$330K |
900 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
