ACM Research, Inc. (ACMR) has 20 known insider and institutional holders on record. The largest holder is Shanghai Science & Technology Venture Capital (Group) Co., Ltd. with 2,703,906 shares. Other notable holders include Xing Xiao and Wang David H.
Over the last 12 months, insiders have made 39 transactions in ACMR stock — 7 buys (valued at $9.83M) and 10 sells (valued at $7.07M). Insider selling has exceeded buying during this period.
ACMR Insider Ownership
Top Holder
Shanghai Science & Technology Venture Capital (Group) Co., Ltd.
2,703,906 shares
Buys (12 mo)
7
$9.83M value
Sells (12 mo)
10
$7.07M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Shanghai Science & Technology Venture Capital (group) Co., Ltd. |
10 Percent Owner, Other: Possible Member of 10% Group |
2,703,906 |
2024-10-08 |
|
| 2 |
Xing Xiao |
Director |
2,703,906 |
2024-10-08 |
|
| 3 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
420,002 |
2026-03-13 |
|
| 4 |
Glenhill Advisors Llc |
10 Percent Owner |
309,877 |
2011-10-11 |
|
| 5 |
Abelman David |
EVP,chief Mktg & Merch Officer |
151,817 |
2011-04-06 |
|
| 6 |
Stern David Ross |
Executive Vice President & CFO |
147,076 |
2011-04-06 |
|
| 7 |
Hu Chenming |
Director |
100,002 |
2025-03-19 |
|
| 8 |
Joyce Michael |
Director |
84,824 |
2011-06-15 |
|
| 9 |
Coradino Joseph F |
Director |
69,824 |
2011-06-15 |
|
| 10 |
Schafer Lori J |
Director |
64,824 |
2011-06-15 |
|
| 11 |
Wang Jian |
See Remarks |
60,000 |
2025-08-26 |
|
| 12 |
Cheav Sotheara |
See Remarks |
56,250 |
2025-09-19 |
|
| 13 |
Feng Lisa |
See Remarks |
50,001 |
2026-03-09 |
|
| 14 |
Chen Fuping |
See Remarks |
30,000 |
2024-09-24 |
|
| 15 |
Katz Marc D |
EVP & Chief Financial Officer |
24,913 |
2008-04-02 |
|
| 16 |
Schriver Rodney |
VP, Chf Acctg Off, Controller |
20,969 |
2011-06-15 |
|
| 17 |
Dun Haiping |
Director |
20,000 |
2025-08-14 |
|
| 18 |
Pappis Charles C |
Director |
20,000 |
2025-08-14 |
|
| 19 |
Liu Tracy |
Director |
15,000 |
2026-03-12 |
|
| 20 |
Segal Eli |
Director |
10,000 |
2005-08-29 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-12 |
Mckechnie Mark |
See Remarks |
Informative Sell |
982 |
$46.55 |
$45.71K |
| 2026-03-12 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
50,000 |
$1.00 |
$50K |
| 2026-03-11 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
60,000 |
$1.00 |
$60K |
| 2026-03-11 |
Liu Tracy |
Director |
Option Exercise (Sell) |
15,000 |
$1.00 |
$15K |
| 2026-03-10 |
Liu Tracy |
Director |
Option Exercise (Sell) |
45,000 |
$1.00 |
$45K |
| 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 |
Feng Lisa |
See Remarks |
Informative Sell |
6,950 |
$50.24 |
$349.17K |
| 2026-03-05 |
Pappis Charles C |
Director |
Informative Sell |
5,000 |
$50.09 |
$250.45K |
| 2026-02-04 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
RSU Award |
545,400 |
$7.36 |
$4.01M |
| 2025-12-08 |
Mckechnie Mark |
See Remarks |
Option Exercise (Sell) |
22,500 |
$25.45 |
$572.63K |
| 2025-12-04 |
Mckechnie Mark |
See Remarks |
Option Exercise (Sell) |
8,750 |
$4.55 |
$39.81K |
| 2025-12-04 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
60,000 |
$1.00 |
$60K |
| 2025-12-03 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
70,000 |
$1.00 |
$70K |
| 2025-12-03 |
Chen Fuping |
See Remarks |
Informative Sell |
300 |
$33.57 |
$10.07K |
| 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 |
Feng Lisa |
See Remarks |
Option Exercise (Sell) |
15,000 |
$5.60 |
$84K |
| 2025-11-12 |
Dun Haiping |
Director |
Gift (Given) |
755,090 |
- |
- |
| 2025-10-27 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
RSU Award |
545,400 |
$7.36 |
$4.01M |
| 2025-09-08 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Option Exercise (Sell) |
130,000 |
$1.00 |
$130K |
| 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 |
| 2025-09-18 |
Cheav Sotheara |
See Remarks |
Option Exercise (Sell) |
10,000 |
$13.89 |
$138.9K |
| 2025-09-04 |
Wang David H |
10 Percent Owner, Officer: See Remarks |
Informative Sell |
60,000 |
$26.44 |
$1.59M |
