ACM Research, Inc.
Total Trades
105
Buys
0
Sells
68
Largest Trade
$1M+
Insiders
11
Institutional Funds
230
Inst. Value
$1M+
Activist Filings
19
Insider Trades
| Insider | Title | Type | Value | Shares | Price | Date |
|---|---|---|---|---|---|---|
| Wang Jian | See remarks | EXERCISE | $100K–$500K | 60K | $4.62 | Jun 12, 2024 |
| Wang Jian | See remarks | EXERCISE | $100K–$500K | 60K | $4.62 | Jun 8, 2024 |
| Wang Jian | See remarks | SELL | $1M+ | 60K | $22.50 | Jun 8, 2024 |
| McKechnie Mark | See Remarks | EXERCISE | $50K–$100K | 20K | $4.91 | Jun 8, 2024 |
| McKechnie Mark | See Remarks | SELL | $100K–$500K | 20K | $22.92 | Jun 8, 2024 |
| Dun Haiping | Director | SELL | $100K–$500K | 19K | $22.63 | May 31, 2024 |
| Wang David H | See Remarks | SELL | $1M+ | 86K | $22.62 | May 31, 2024 |
| Wang David H | See Remarks | SELL | $1M+ | 90K | $22.81 | May 24, 2024 |
| Dun Haiping | Director | SELL | $100K–$500K | 15K | $22.88 | May 24, 2024 |
| Feng Lisa | See remarks | SELL | $100K–$500K | 8K | $25.20 | Mar 2, 2024 |
| Feng Lisa | See remarks | EXERCISE | $15K–$50K | 8K | $5.60 | Mar 2, 2024 |
| Liu Tracy | Director | EXERCISE | $50K–$100K | 13K | $5.60 | Mar 2, 2024 |
| Liu Tracy | Director | SELL | $100K–$500K | 13K | $25.20 | Mar 2, 2024 |
| McKechnie Mark | See Remarks | SELL | $100K–$500K | 10K | $22.00 | Jan 16, 2024 |
| McKechnie Mark | See Remarks | EXERCISE | $15K–$50K | 10K | $4.55 | Jan 16, 2024 |
| Liu Tracy | Director | SELL | $100K–$500K | 10K | $20.00 | Dec 29, 2023 |
| Liu Tracy | Director | EXERCISE | $50K–$100K | 10K | $5.60 | Dec 29, 2023 |
| Feng Lisa | See remarks | EXERCISE | $15K–$50K | 8K | $5.60 | Dec 29, 2023 |
| Feng Lisa | See remarks | SELL | $100K–$500K | 8K | $20.00 | Dec 29, 2023 |
| Dun Haiping | Director | SELL | $100K–$500K | 19K | $17.25 | Dec 1, 2023 |
| Wang David H | See Remarks | SELL | $1M+ | 85K | $17.14 | Dec 1, 2023 |
| Wang David H | See Remarks | SELL | $1M+ | 90K | $17.68 | Nov 27, 2023 |
| Dun Haiping | Director | SELL | $100K–$500K | 15K | $17.66 | Nov 27, 2023 |
| Liu Tracy | Director | EXERCISE | $100K–$500K | 15K | $7.36 | Nov 22, 2023 |
| Liu Tracy | Director | SELL | $100K–$500K | 15K | $17.91 | Nov 22, 2023 |
| Cheav Sotheara | See remarks | SELL | $100K–$500K | 26K | $16.79 | Nov 15, 2023 |
| Cheav Sotheara | See remarks | EXERCISE | $100K–$500K | 26K | $4.99 | Nov 15, 2023 |
| McKechnie Mark | See Remarks | EXERCISE | $50K–$100K | 11K | $4.55 | Oct 13, 2023 |
| McKechnie Mark | See Remarks | SELL | $100K–$500K | 11K | $20.00 | Oct 13, 2023 |
| Wang David H | See Remarks | SELL | $1M+ | 175K | $17.87 | Sep 14, 2023 |
| McKechnie Mark | See Remarks | SELL | $500K+ | 30K | $18.00 | Sep 6, 2023 |
| McKechnie Mark | See Remarks | EXERCISE | $100K–$500K | 30K | $4.55 | Sep 6, 2023 |
| Chen Fuping | See remarks | EXERCISE | $100K–$500K | 105K | $1.06 | Aug 25, 2023 |
| Chen Fuping | See remarks | SELL | $1M+ | 105K | $15.00 | Aug 25, 2023 |
| Dun Haiping | Director | SELL | $100K–$500K | 32K | $13.85 | Aug 25, 2023 |
| Feng Lisa | See remarks | SELL | $100K–$500K | 23K | $15.00 | Jul 5, 2023 |
| Feng Lisa | See remarks | EXERCISE | $15K–$50K | 23K | $1.77 | Jul 5, 2023 |
| Cheav Sotheara | See remarks | SELL | $100K–$500K | 39K | $10.00 | Jun 9, 2023 |
| Cheav Sotheara | See remarks | EXERCISE | $100K–$500K | 39K | $4.92 | Jun 9, 2023 |
| Dun Haiping | Director | SELL | $100K–$500K | 38K | $10.00 | Jun 5, 2023 |
| Dun Haiping | Director | SELL | $100K–$500K | 38K | $12.06 | Mar 21, 2023 |
| Feng Lisa | See remarks | SELL | $100K–$500K | 23K | $12.37 | Mar 14, 2023 |
| Feng Lisa | See remarks | EXERCISE | $15K–$50K | 23K | $1.77 | Mar 14, 2023 |
| Dun Haiping | Director | SELL | $100K–$500K | 35K | $8.43 | Dec 2, 2022 |
| Dun Haiping | Director | SELL | $500K+ | 37K | $16.10 | Aug 25, 2022 |
| Cheav Sotheara | See remarks | SELL | $100K–$500K | 10K | $17.50 | Aug 23, 2022 |
| Cheav Sotheara | See remarks | SELL | $100K–$500K | 20K | $18.21 | Aug 19, 2022 |
| Cheav Sotheara | See remarks | EXERCISE | $15K–$50K | 10K | $4.62 | Aug 19, 2022 |
| Dun Haiping | Director | SELL | $500K+ | 37K | $19.28 | Aug 17, 2022 |
| Dun Haiping | Director | EXERCISE | $15K–$50K | 38K | $0.50 | Aug 17, 2022 |
Institutional Ownership
13F filings as of Dec 31, 2025 · 230 funds holding
| Fund | Shares | Value | Type |
|---|---|---|---|
| VANGUARD GROUP INC | 4.6M | $1M+ | SH |
| LSV ASSET MANAGEMENT | 2.4M | $1M+ | SH |
| STATE STREET CORP | 2.0M | $1M+ | SH |
| SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | 1.7M | $1M+ | SH |
| GEODE CAPITAL MANAGEMENT, LLC | 1.2M | $1M+ | SH |
| Mitsubishi UFJ Trust & Banking Corp | 829K | $1M+ | SH |
| PEAK6 LLC | 814K | $1M+ | SH (Call) |
| Tekne Capital Management, LLC | 715K | $1M+ | SH |
| Cederberg Capital Ltd | 694K | $1M+ | SH |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 478K | $1M+ | SH |
| Raiffeisen Bank International AG | 435K | $1M+ | SH |
| Penn Capital Management Company, LLC | 436K | $1M+ | SH |
| WEXFORD CAPITAL LP | 335K | $1M+ | SH |
| NEW YORK STATE COMMON RETIREMENT FUND | 304K | $1M+ | SH |
| CONGRESS ASSET MANAGEMENT CO | 289K | $1M+ | SH |
| Portolan Capital Management, LLC | 286K | $1M+ | SH |
| Oasis Management Co Ltd. | 234K | $1M+ | SH |
| SG Americas Securities, LLC | 229K | $1M+ | SH |
| FIRST TRUST ADVISORS LP | 215K | $1M+ | SH |
| DIMENSIONAL FUND ADVISORS LP | 201K | $1M+ | SH |
Activist & 5%+ Owners
SC 13D/13G filings — investors holding 5%+ of outstanding shares
SC 13G/A · Jan 30, 2026
8.3%
5.0M shares
SC 13G/A · Oct 2, 2025
12.6%
7.4M shares
SC 13G/A · Apr 17, 2025
6.6%
3.8M shares
SC 13G/A · Nov 13, 2024
1.2%
666K shares
SC 13G/A · Nov 8, 2024
7.7%
4.4M shares
Shanghai Science and Technology Venture Capital (Group) Co., Ltd.
SC 13D/A · Oct 30, 2024
4.1%
2.3M shares
SC 13G/A · Oct 22, 2024
7.7%
4.4M shares
Shanghai Science and Technology Venture Capital (Group) Co., Ltd.
SC 13D/A · Oct 9, 2024
4.1%
2.3M shares
SC 13G/A · Feb 14, 2024
9.7%
5.4M shares
The Vanguard Group - 23-1945930
SC 13G/A · Feb 13, 2024
7.3%
4.1M shares
SC 13G · Jan 26, 2024
6.7%
3.7M shares
Shanghai Science and Technology Venture Capital (Group) Co., Ltd
SC 13D/A · Jul 18, 2023
6.3%
3.4M shares
Shanghai Science and Technology Venture Capital (Group) Co., Ltd.
SC 13G/A · Jul 18, 2023
6.3%
3.4M shares
Shanghai Science and Technology Venture Capital (Group) Co., Ltd
SC 13D · Jun 13, 2023
6.3%
3.4M shares
Shanghai Science and Technology Venture Capital (Group) Co., Ltd.
SC 13G · Jun 13, 2023
6.3%
3.4M shares
SC 13G/A · Feb 14, 2023
9.7%
5.3M shares
SC 13G · Feb 13, 2023
5.9%
3.2M shares
Morgan Stanley I.R.S. # 36-3145972
SC 13G/A · Feb 9, 2023
0.7%
391K shares
SC 13G · Feb 14, 2022
8.2%
1.4M shares