ACM Research CEO David H. Wang Exercises Options and Sells Shares Under 10b5-1 Plan

David H. Wang, CEO, President, and Director of ACM Research, Inc., filed a Form 4 reporting significant stock transactions on June 3-4, 2026. Wang exercised 100,002 stock options at $1.00 per share and subsequently sold 78,007 shares of Class A Common Stock at prices ranging from $83.86 to $93.04 per share. The sales were executed pursuant to a Rule 10b5-1 trading plan adopted on November 29, 2024. Following these transactions, Wang's direct ownership decreased to 802,708 shares, while indirect holdings through family trusts and family members total 945,840 additional shares. The stock option exercises involved fully vested options expiring December 27, 2026. These transactions represent substantial insider activity, with the CEO monetizing a portion of his holdings while maintaining significant ownership in the company.