Tracy Liu
Tracy Liu: Director at ACM Research and Director at AXT. What Tracy Liu holds in 2 AI and semiconductor companies 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)
Tracy Liu holds 110,772 ACM Research shares (0.16% of the company), worth about $7.8M at the last price, according to the Form 4 of Mar 11, 2026.
- Shares held: 110,772 (0.16%), $7.8M — Held in their own name: 110,772 Class A.
- Options: 20,000 (0.03%), $1.4M — The right to buy 20,000 shares at $18.89 each, until 2034. Not bought yet.
- Options: 20,000 (0.03%), $1.4M — The right to buy 20,000 shares at $24.93 each, until 2035. Not bought yet.
- Options: 6,400 (0.01%), $452,736.00 — The right to buy 6,400 shares at $81.26 each, until 2036. Not bought yet.
- Share units: 728 (0.00%), $51,498.72 — ACM Research promised them as pay: each unit becomes a share when it vests, if its conditions are met. No vote until then.
AXT (AXTI)
Tracy Liu holds 726 AXT shares (0.00% of the company), worth about $51,974.34 at the last price, according to the Form 3 of Jun 17, 2026.
- Shares held: 726 (0.00%), $51,974.34 — Held in their own name.
Declarations
- ACM Research (ACMR) — Form 4 of Aug 12, 2026 0001140361-26-034527
- AXT (AXTI) — Form 3 of Jun 17, 2026; 726 shares after 0001437749-26-021606
- ACM Research (ACMR) — Form 4 of Mar 11, 2026: option exercise or conversion of 45,000 at $1.00; open-market sale of 32,216 at $47.06; 110,772 shares after 0001140361-26-009239
- ACM Research (ACMR) — Form 4 of Sep 17, 2025: option exercise or conversion of 15,000 at $1.00; open-market sale of 15,000 at $33.00; 110,772 shares after 0001140361-25-035582
- ACM Research (ACMR) — Form 4 of Aug 12, 2025 0001140361-25-031256
- ACM Research (ACMR) — Form 4 of Jul 15, 2025: option exercise or conversion of 15,000 at $1.00; open-market sale of 15,000 at $30.00; 110,772 shares after 0001140361-25-026241
- ACM Research (ACMR) — Form 4 of Aug 12, 2024 0001140361-24-037996
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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