Lisa Feng

Lisa Feng: See remarks at ACM Research. What Lisa Feng holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.

ACM Research (ACMR)

Lisa Feng holds 50,001 ACM Research shares (0.07% of the company), worth about $3.5M at the last price, according to the Form 4 of Mar 6, 2026.

• Shares held: 50,001 (0.07%), $3.5M — Held in their own name: 50,001 Class A.

Declarations

• ACM Research (ACMR) — Form 4 of Mar 6, 2026 (See remarks): option exercise or conversion of 15,000 at $4.55; open-market sale of 8,050 at $49.81; 50,001 shares after 0001140361-26-008479
• ACM Research (ACMR) — Form 4 of Nov 13, 2025 (See remarks): option exercise or conversion of 15,000 at $5.60; open-market sale of 15,000 at $32.76; 50,001 shares after 0001140361-25-042345
• ACM Research (ACMR) — Form 4 of Jul 7, 2025 (See remarks): option exercise or conversion of 15,000 at $5.60; open-market sale of 15,000 at $28.00; 50,001 shares after 0001140361-25-025348
• ACM Research (ACMR) — Form 4 of Jun 24, 2025 (See remarks): option exercise or conversion of 15,000 at $5.60; open-market sale of 15,000 at $26.00; 50,001 shares after 0001140361-25-023830

Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.

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