ACM Research (ACMR) CFO Mark McKechnie Exercises Options, Sells Shares

What Happened

• Mark McKechnie, Chief Financial Officer and Treasurer of ACM Research (ACMR), exercised a total of 55,199 options on Aug 20, 2026 and sold the same number of shares the same day. He paid $935,829 to exercise (30,199 shares @ $19.49 = $588,579; 25,000 shares @ $13.89 = $347,250) and sold 55,199 shares in three open‑market tranches for gross proceeds of $4,264,971 (13,625 @ ~$76.34; 30,365 @ ~$77.45; 11,209 @ ~$77.89). The option grants were fully vested.

Key Details

• Transaction date: August 20, 2026; Form 4 filed August 21, 2026 (timely).
• Exercises (code M): 30,199 shares @ $19.49 and 25,000 shares @ $13.89 (total paid ≈ $935,829).
• Sales (code S): 13,625 shares @ weighted avg $76.34 (range $75.76–$76.68); 30,365 shares @ weighted avg $77.45 (range $76.81–$77.79); 11,209 shares @ weighted avg $77.89 (range $77.84–$78.40). Total sales proceeds ≈ $4,264,971.
• Net cash (gross proceeds minus exercise cost): roughly $3.33M before taxes, fees, and withholding.
• Footnotes: Sales executed pursuant to a Rule 10b5‑1 trading plan adopted May 21, 2026; option is fully vested; weighted average prices reported with ranges (see filing for per‑price breakdown).
• Shares owned after transaction: not specified in the data provided.

Context

• Because McKechnie exercised options and sold the exact same number of shares on the same day, this is effectively a cashless exercise followed by disposition of the acquired shares. Such transactions are commonly used to monetize vested option value and do not necessarily signal a change in insider sentiment. The filing was submitted promptly (filed the next day).