David H. Wang
David H. Wang: See Remarks · Director · 10% owner at ACM Research. What David H. Wang 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)
David H. Wang holds 1.7M ACM Research shares (2.4% of the company), worth about $129.5M at the last price, according to the Form 4 of Sep 9, 2026.
- Shares held: 802,708 (1.2%), $61.0M — Held in their own name: 802,708 Class A.
- Shares held: 620,001 (0.89%), $47.2M — Held through trusts (By Wang-Chen Family Living Trust): 620,001 Class A.
- Shares held: 280,002 (0.40%), $21.3M — Held by a spouse or a family member (By Jing Chen, wife of David H. Wang, By David Hui Wang and Jing Chen Family Irrevocable Trust for Wang Children): 280,002 Class A.
- Options: 1.6M (2.3%), $124.4M — The right to buy 1.6M shares at $7.36 each, until 2030. Not bought yet.
- Options: 130,000 (0.19%), $9.9M — The right to buy 130,000 shares at $1.00 each, until 2026. Not bought yet.
- Share units: 6,208 (0.01%), $472,149.44 — 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 Sep 9, 2026 (See Remarks): option exercise or conversion of 70,000 at $1.00; open-market sale of 4,803 at $75.99; 1.7M shares after 0001140361-26-036191
- ACM Research (ACMR) — Form 4 of Jun 4, 2026 (See Remarks): option exercise or conversion of 60,000 at $1.00; open-market sale of 4,300 at $87.57; 1.7M shares after 0001140361-26-024280
- ACM Research (ACMR) — Form 4 of May 13, 2026 (See Remarks); 945,840 shares after 0001140361-26-027691
- ACM Research (ACMR) — Form 4 of Mar 12, 2026 (See Remarks): option exercise or conversion of 60,000 at $1.00; open-market sale of 55,373 at $47.89; 1.7M shares after 0001140361-26-009401
- ACM Research (ACMR) — Form 4 of Feb 4, 2026 (See Remarks); 945,840 shares after 0001140361-26-004200
- ACM Research (ACMR) — Form 4 of Dec 4, 2025 (See Remarks): option exercise or conversion of 70,000 at $1.00; open-market sale of 68,800 at $33.05; 1.7M shares after 0001140361-25-044559
- ACM Research (ACMR) — Form 4 of Oct 27, 2025 (See Remarks); 945,840 shares after 0001140361-25-039758
- ACM Research (ACMR) — Form 4 of Sep 8, 2025 (See Remarks): option exercise or conversion of 130,000 at $1.00; 1.7M shares after 0001140361-25-036835
- ACM Research (ACMR) — Form 4 of Sep 4, 2025 (See Remarks): option exercise or conversion of 70,000 at $1.00; open-market sale of 66,057 at $26.73; 1.6M shares after 0001140361-25-034208
- ACM Research (ACMR) — Form 4 of May 22, 2025 (See Remarks): option exercise or conversion of 70,000 at $1.00; open-market sale of 69,992 at $23.60; 1.6M shares after 0001140361-25-020348
- ACM Research (ACMR) — Form 4 of Mar 13, 2025 (See Remarks): open-market sale of 56,250 at $26.57; open-market sale of 37,500 at $27.42; 1.6M shares after 0001140361-25-008688
- ACM Research (ACMR) — Form 4 of Mar 3, 2025 (See Remarks): option exercise or conversion of 210,000 at $0.50; shares withheld for tax of 4,048 at $25.94; 1.7M shares after 0001140361-25-007209
- ACM Research (ACMR) — Form 4 of Nov 29, 2024 (See Remarks): open-market sale of 56,250 at $17.44; 1.5M shares after 0001140361-24-048306
- ACM Research (ACMR) — Form 4 of Nov 26, 2024 (See Remarks): open-market sale of 46,766 at $17.80; open-market sale of 9,484 at $18.31; 1.6M shares after 0001140361-24-048076
- ACM Research (ACMR) — Form 4 of Nov 22, 2024 (See Remarks): open-market sale of 56,250 at $19.08; 1.7M shares after 0001140361-24-047887
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.