Sotheara Cheav

Sotheara Cheav: See remarks at ACM Research. What Sotheara Cheav 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)

Sotheara Cheav holds 100,002 ACM Research shares (0.14% of the company), worth about $6.9M at the last price, according to the Form 4 of Jun 5, 2026.

• Shares held: 100,002 (0.14%), $6.9M — Held in their own name: 100,002 Class A.
• Options: 37,500 (0.05%), $2.6M — The right to buy 37,500 shares at $13.89 each, until 2033. Not bought yet.

Declarations

• ACM Research (ACMR) — Form 4 of Jun 5, 2026 (See remarks): option exercise or conversion of 13,351 at $13.89; open-market sale of 1,300 at $84.08; 100,002 shares after 0001140361-26-024322
• ACM Research (ACMR) — Form 4 of Sep 18, 2025 (See remarks): option exercise or conversion of 10,000 at $13.89; open-market sale of 10,000 at $35.00; 100,002 shares after 0001140361-25-035583
• ACM Research (ACMR) — Form 4 of Aug 22, 2025 (See remarks): option exercise or conversion of 11,152 at $13.89; open-market sale of 11,152 at $30.00; 100,002 shares after 0001140361-25-032733
• ACM Research (ACMR) — Form 4 of Feb 6, 2025 (See remarks): option exercise or conversion of 10,000 at $13.89; option exercise or conversion of 12,598 at $13.89; 100,002 shares after 0001140361-25-003749

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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