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ACM Research, Inc. director Haiping Dun exercised stock options for 5,000 shares of Class A Common Stock at $5.60 per share, then sold 5,000 shares in open-market transactions around $43–$44 per share. These sales were made under a pre-arranged Rule 10b5-1 trading plan adopted on August 13, 2025. Following the trades, Dun reported no direct Class A Common Stock holdings, while continuing to hold 55,000 stock options and indirect ownership of 100,000 and 755,090 Class A shares through family trusts.
ACMR affiliate reported a proposed sale of 15,000 common shares under a Form 144. The filing lists the planned sale as a stock option exercise to be effected on 03/11/2026 and indicates cash as the method. The excerpt also shows 45,000 common shares sold on 03/10/2026 for 2,132,248.50 as a recent disposition.
ACM Research director Charles C. Pappis reported a stock option exercise and related share sale. On March 5, 2026, he exercised a previously issued option for 5,000 shares of Class A Common Stock, receiving the shares at an exercise price of $29.1800 per share.
That same day, he sold 5,000 shares of Class A Common Stock in an open-market transaction at $50.0900 per share, leaving him with 0 shares directly owned after the transactions. The sale was carried out under a pre-established Rule 10b5-1 trading plan adopted on November 20, 2025, and the option was fully vested and exercisable.
ACM Research, Inc. officer Lisa Feng exercised stock options and sold shares of Class A Common Stock. On March 5 and 6, 2026, she exercised options for a total of 30,000 shares of Class A Common Stock at an exercise price of $4.55 per share through derivative conversions.
Over those two days she sold a total of 30,000 shares of Class A Common Stock in open-market transactions at weighted average prices ranging from $45.51 to $50.54, under a Rule 10b5‑1 trading plan adopted on December 2, 2025. Following these transactions, she directly holds 50,001 shares of Class A Common Stock.
Lisa Yi Lu Feng reported an intended sale of 15,000 common shares of ACMR via stock option exercise on 03/06/2026 through Morgan Stanley Smith Barney LLC. The filing lists proceeds of $691,173.00. The record also shows a sale of 15,000 common shares on 03/05/2026 with proceeds of $750,148.50.