Acm Research, INC Form 4 insider transactions

David H. Wang, CEO and Director of ACM Research, Inc., reported the grant of 6,208 Restricted Stock Units (RSUs) on May 13, 2026.

Sotheara Cheav, Senior VP of Manufacturing for ACM Research's Shanghai subsidiary, exercised options and sold 18,750 shares under a pre-arranged trading plan.

ACM Research CEO David H. Wang exercised 100,002 stock options and sold a portion of the resulting shares under a pre-established 10b5-1 trading plan.

ACM Research Director Haiping Dun reported transactions involving Class A Common Stock, including the acquisition of 5,000 shares and the sale of 7,500 shares under a pre-arranged trading plan.

ACM Research Director Charles Pappis exercised options and sold 5,000 shares of Class A Common Stock under a 10b5-1 plan.

ACM Research's CFO and Treasurer, Mark McKechnie, exercised stock options and subsequently sold a portion of the acquired shares under a pre-arranged 10b5-1 trading plan.

ACM Research CEO David H. Wang executed pre-planned transactions, exercising stock options and selling a portion of his Class A Common Stock holdings.

ACM Research Director Tracy Liu executed pre-planned sales of 60,000 Class A Common Stock shares following option exercises in early March 2026.

ACM Research CFO Mark McKechnie exercised options and sold Class A Common Stock in planned transactions.

ACM Research CEO David H. Wang exercised stock options and subsequently sold a portion of the acquired shares under a pre-arranged 10b5-1 trading plan.

Fuping Chen, VP of Sales-China at ACM Research, sold 120,000 shares of Class A Common Stock for approximately $3.98 million after exercising options.

ACM Research Director Haiping Dun gifted 755,090 Class A common shares to a family revocable trust for estate planning purposes.

ACM Research CFO Lisa Feng exercised stock options and subsequently sold shares of Class A Common Stock under a pre-arranged trading plan on November 12 and 13, 2025.

ACM Research, Inc. CEO David H. Wang's stock options for 545,400 shares vested on October 27, 2025, following the company's market capitalization exceeding $2.55 billion.

ACM Research CEO David H. Wang exercised options to acquire 130,000 shares of Class A Common Stock on September 8, 2025, increasing his beneficial ownership.

ACM Research Director Tracy Liu exercised stock options and subsequently sold 15,000 shares of Class A Common Stock for $33 per share under a pre-arranged 10b5-1 trading plan.

Jian Wang, an officer of ACM Research, Inc., exercised stock options and subsequently sold 30,000 Class A Common Stock shares under a Rule 10b5-1 trading plan.

ACM Research Senior VP Sotheara Cheav exercised stock options and subsequently sold 10,000 shares of Class A Common Stock on September 18, 2025, pursuant to a Rule 10b5-1 trading plan.

ACM Research CEO David H. Wang executed pre-planned sales of Class A Common Stock totaling 130,000 shares in early September 2025, following option exercises.

ACM Research's Senior Vice President, Sotheara Cheav, exercised stock options and sold an equal number of Class A Common Stock shares as part of a pre-arranged trading plan.

ACM Research executive Jian Wang exercised stock options and sold a portion of Class A Common Stock under a pre-arranged 10b5-1 trading plan.

ACM Research, Inc. Director Charles C Pappis was granted 20,000 stock options with an exercise price of $24.93, vesting prior to the 2026 annual meeting.

ACM Research Director Tracy Liu was granted 20,000 stock options with an exercise price of $24.93, vesting prior to the 2026 annual meeting.

ACM Research, Inc. Director Haiping Dun was granted 20,000 stock options with an exercise price of $24.93, vesting prior to the 2026 annual meeting.

ACM Research Director Tracy Liu completed a pre-planned transaction, exercising stock options and selling 15,000 shares of Class A Common Stock.

Lisa Feng, Chief Financial Officer of ACM Research (Shanghai), Inc., exercised stock options and subsequently sold 15,000 shares of ACM Research Class A Common Stock on July 7, 2025, pursuant to a Rule 10b5-1 trading plan.

Lisa Feng, an officer of ACM Research, Inc., executed a pre-planned transaction involving the exercise of stock options and the subsequent sale of Class A Common Stock.

ACM Research, Inc.'s CEO, President, and 10% owner, David H. Wang, reported the exercise of stock options and subsequent sales of Class A Common Stock totaling 130,000 shares over two days, all conducted under a pre-arranged Rule 10b5-1 trading plan.

Director Charles C. Pappis of ACM Research, Inc. reports the acquisition of 10,000 stock options exercisable prior to the 2025 annual meeting.

Mark McKechnie, CFO of ACM Research, exercised stock options and sold 15,000 shares of Class A Common Stock at an average price of $25.22, according to a Form 4 filing.