Haiping Dun serves as Executive at ACM Research, Inc., where they oversee executive responsibilities. Since joining the company, Haiping Dun has executed 46 insider transactions totaling $7.4M, demonstrating a bearish approach to their equity position. Their most recent transaction on Nov 12, 2025 involved gifting 755,090 shares valued at $0.
Haiping Dun currently holds 755,090 shares of ACM Research, Inc. (ACMR), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Haiping Dun has been a net seller of ACMR stock. They have purchased $0 and sold $7.4M worth of shares.
Haiping Dun's most recent insider trade was on Nov 12, 2025, when they sold 755,090 shares at $0.00 per share.
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| $18.08 |
| Planned |
| Aug 22, 2024 | ACMR | $297.8K | Sale | 15,000 | $19.85 | Planned |
| Aug 14, 2024 | ACMR | $17.5K | Option Exercise | 35,000 | $0.50 | Discretionary |
| Aug 14, 2024 | ACMR | $17.5K | Payment | 903 | $19.38 | Discretionary |
| May 29, 2024 | ACMR | $435.4K | Sale | 19,239 | $22.63 | Planned |
| May 22, 2024 | ACMR | $343.2K | Sale | 15,000 | $22.88 | Planned |
| May 14, 2024 | ACMR | $17.5K | Option Exercise | 35,000 | $0.50 | Discretionary |
| May 14, 2024 | ACMR | $17.5K | Payment | 761 | $23.02 | Discretionary |
| Mar 14, 2024 | ACMR | $100.8K | Sale | 3,557 | $28.34 | Planned |
| Mar 14, 2024 | ACMR | $437.6K | Sale | 15,877 | $27.56 | Planned |
| Mar 8, 2024 | ACMR | $455.4K | Sale | 15,000 | $30.36 | Planned |
| Mar 1, 2024 | ACMR | $17.5K | Option Exercise | 35,000 | $0.50 | Discretionary |
| Mar 1, 2024 | ACMR | $17.5K | Payment | 566 | $30.92 | Discretionary |
| Nov 29, 2023 | ACMR | $327.5K | Sale | 18,984 | $17.25 | Planned |
| Nov 22, 2023 | ACMR | $264.9K | Sale | 15,000 | $17.66 | Planned |
| Nov 14, 2023 | ACMR | $17.5K | Payment | 1,016 | $17.23 | Discretionary |
| Nov 14, 2023 | ACMR | $17.5K | Option Exercise | 35,000 | $0.50 | Discretionary |
| Aug 22, 2023 | ACMR | $444.6K | Sale | 32,098 | $13.85 | Discretionary |
| Jun 1, 2023 | ACMR | $375.0K | Sale | 37,500 | $10.00 | Discretionary |
| May 22, 2023 | ACMR | $18.8K | Option Exercise | 37,500 | $0.50 | Discretionary |
| May 22, 2023 | ACMR | $18.8K | Payment | 1,928 | $9.73 | Discretionary |
| Mar 16, 2023 | ACMR | $452.3K | Sale | 37,500 | $12.06 | Discretionary |
| Mar 9, 2023 | ACMR | $18.8K | Payment | 1,504 | $12.47 | Discretionary |
| Mar 9, 2023 | ACMR | $18.8K | Option Exercise | 37,500 | $0.50 | Discretionary |
| Nov 30, 2022 | ACMR | $297.8K | Sale | 35,327 | $8.43 | Discretionary |
| Nov 22, 2022 | ACMR | $18.8K | Payment | 2,173 | $8.63 | Discretionary |
| Nov 22, 2022 | ACMR | $18.8K | Option Exercise | 37,500 | $0.50 | Discretionary |
| Nov 14, 2022 | ACMR | $18.8K | Option Exercise | 37,500 | $0.50 | Discretionary |
| Nov 14, 2022 | ACMR | $18.8K | Payment | 1,970 | $9.52 | Discretionary |