Charles C. Pappis
Charles C. Pappis: Director at ACM Research. What Charles C. Pappis 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)
Charles C. Pappis holds 0 ACM Research shares (0.00% of the company), worth about $0.00 at the last price, according to the Form 4 of Apr 17, 2026.
- Options: 20,000 (0.03%), $1.1M — The right to buy 20,000 shares at $24.93 each, until 2035. Not bought yet.
- Options: 6,400 (0.01%), $351,424.00 — The right to buy 6,400 shares at $81.26 each, until 2036. Not bought yet.
- Share units: 728 (0.00%), $39,974.48 — ACM Research promised them as pay: each unit becomes a share when it vests, if its conditions are met. No vote until then.
Declarations
- ACM Research (ACMR) — Form 4 of Aug 12, 2026 0001140361-26-034528
- ACM Research (ACMR) — Form 4 of Apr 17, 2026: option exercise or conversion of 5,000 at $29.18; open-market sale of 5,000 at $52.00; 0 shares after 0001140361-26-015915
- ACM Research (ACMR) — Form 4 of Mar 5, 2026: option exercise or conversion of 5,000 at $29.18; open-market sale of 5,000 at $50.09; 0 shares after 0001140361-26-008480
- ACM Research (ACMR) — Form 4 of Aug 12, 2025 0001140361-25-031258
- ACM Research (ACMR) — Form 4 of Mar 15, 2025 0001140361-25-020077
- ACM Research (ACMR) — Form 3 of Mar 15, 2025; 0 shares after 0001140361-25-020076
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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