Feng Lisa 4

What Happened
Feng Lisa, Chief Financial Officer of ACM Research (Shanghai) Inc. (a subsidiary of ACM Research, ticker ACMR), exercised two option grants (15,000 shares each) and sold the resulting 30,000 shares in open-market transactions. She paid $4.55 per share on the exercised lots (total cash paid ≈ $136,500) and generated total gross sale proceeds of about $1,441,291 from the sales.

Key Details

• Transactions reported for March 5–6, 2026; Form 4 filed March 9, 2026 (timely).
• Exercises: 15,000 shares on 2026-03-05 and 15,000 shares on 2026-03-06 at $4.55 each (Acquired — $68,250 per exercise; $136,500 total). Option is fully vested and exercisable (F6).
• Open-market sales (total 30,000 shares; gross proceeds ≈ $1,441,291):
  • 2026-03-05: 8,050 shares at a weighted avg $49.81 (≈ $400,971) — trades ranged $49.16–$50.06 (F2).
  • 2026-03-05: 6,950 shares at a weighted avg $50.24 (≈ $349,168) — trades ranged $50.16–$50.54 (F3).
  • 2026-03-06: 14,800 shares at a weighted avg $46.07 (≈ $681,836) — trades ranged $45.51–$46.48 (F4).
  • 2026-03-06: 200 shares at $46.58 (≈ $9,316) — trades ranged $46.52–$46.63 (F5).
• The filing also shows related derivative conversion/exercise line items recorded at $0 (typical reporting for conversion of derivative instruments).
• Sales were effected pursuant to a Rule 10b5-1 trading plan adopted Dec 2, 2025 (F1).
• The filing does not specify shares owned after the transactions in the provided data.

Context

• This sequence—exercising vested options at a low strike ($4.55) and promptly selling the shares—functions like a cashless exercise: the insider converted options into shares and sold them in the market.
• Sales under an established 10b5-1 plan are prearranged and can be routine, so they do not necessarily signal a personal view on the company’s near-term prospects.
• All statements above are factual descriptions from the Form 4; motivations are not provided.