Who
David H. Wang
Director and Officer and 10% owner
Company insider
Files Form 4 as: Director and Officer and 10% owner, ACM Research.
In numbers
- Trades disclosed
- 174
- Buys
- 0
- Sells
- 32
- Bought
- $0
- Sold
- $104.6M
- Companies
- 1
- Companies where not an officer
- 0
- First trade
- 29 Jun 2018
- Last trade
- 9 Sep 2026
- Last filed
- 10 Sep 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $369K4,807 at $76.73 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $85K1,100 at $77.59 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM Researchoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | —70,000 at $0.00 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM Researchoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | —70,000 at $0.00 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Code M | $70K70,000 at $1.00 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $2.5M33,493 at $73.80 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $1.4M18,934 at $74.67 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $882K11,666 at $75.58 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Code M | $70K70,000 at $1.00 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $2.5M33,493 at $73.80 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $1.4M18,934 at $74.67 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $882K11,666 at $75.58 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $369K4,807 at $76.73 | filing |
| 9 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $85K1,100 at $77.59 | filing |
| 8 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Code M | $70K70,000 at $1.00 | filing |
| 8 Sep 2026filed 10 Sep 2026 | ACMR ACM Researchoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | —70,000 at $0.00 | filing |
| 8 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $365K4,803 at $75.99 | filing |
| 8 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $4.0M51,374 at $77.15 | filing |
| 8 Sep 2026filed 10 Sep 2026 | ACMR ACM Researchoption or derivative · Semiconductor Equipment | SEC FORM 4 Code M | —70,000 at $0.00 | filing |
| 8 Sep 2026filed 10 Sep 2026 | ACMR ACM ResearchSemiconductor Equipment | SEC FORM 4 Sold | $962K12,323 at $78.08 | filing |
News
No headline names them, or the companies they trade most, lately.