Haiping Dun

Companies

• ACM Research, Inc.Board member Nov 2, 2017 to now¹

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• ARACM Research, Inc. ACMR755,090 shares²$42.6M at $56.38Aug 20, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 18, 2026Sold 400 shares at $82.17 of ACM Research, Inc.²
• Aug 18, 2026Sold 3,400 shares at $81.31 of ACM Research, Inc.²
• Aug 18, 2026Sold 1,200 shares at $80.29 of ACM Research, Inc.²
• Aug 18, 2026Exercised options 5,000 shares at $5.60 of ACM Research, Inc.²
• May 19, 2026Sold 1,858 shares at $67.54 of ACM Research, Inc.³
• May 19, 2026Sold 1,309 shares at $67.21 of ACM Research, Inc.³
• May 19, 2026Sold 500 shares at $65.09 of ACM Research, Inc.³
• May 19, 2026Sold 1,333 shares at $63.84 of ACM Research, Inc.³
• May 19, 2026Exercised options 5,000 shares at $5.60 of ACM Research, Inc.³
• Mar 9, 2026Sold 900 shares at $43.94 of ACM Research, Inc.⁴
• Mar 9, 2026Sold 4,100 shares at $43.37 of ACM Research, Inc.⁴
• Mar 9, 2026Exercised options 5,000 shares at $5.60 of ACM Research, Inc.⁴
• Nov 12, 2025Gift 755,090 shares of ACM Research, Inc.⁵
• Mar 14, 2025Sold 7,062 shares at $29.23 of ACM Research, Inc.⁶
• Mar 14, 2025Sold 2,456 shares at $28.32 of ACM Research, Inc.⁶
• Mar 10, 2025Sold 15,001 shares at $26.54 of ACM Research, Inc.⁷
• Mar 3, 2025Shares withheld for tax 482 shares at $25.94 of ACM Research, Inc.⁸
• Mar 3, 2025Exercised options 25,001 shares at $0.50 of ACM Research, Inc.⁸
• Nov 29, 2024Sold 19,058 shares at $17.43 of ACM Research, Inc.⁹
• Nov 22, 2024Sold 15,000 shares at $19.12 of ACM Research, Inc.¹⁰
• Nov 14, 2024Shares withheld for tax 942 shares at $18.59 of ACM Research, Inc.¹¹
• Nov 14, 2024Exercised options 35,000 shares at $0.50 of ACM Research, Inc.¹¹
• Aug 29, 2024Sold 19,097 shares at $18.08 of ACM Research, Inc.¹²
• Aug 22, 2024Sold 15,000 shares at $19.85 of ACM Research, Inc.¹³
• Aug 14, 2024Shares withheld for tax 903 shares at $19.38 of ACM Research, Inc.¹⁴