Insiders / Hu Chenming
Hu Chenming
CIK 1316320personinsider
Companies
5
First seen
Feb 10, 2015
Last activity
Sep 4, 2025
Holdings
5 companies · 8 positionsView all →
| Company / security | Shares held | Latest |
|---|---|---|
| ACM Research, Inc. · ACM | 100,002 | — |
| Class A common stock | 100,002 | Mar 17, 2025 |
| Options | 20,000 | Aug 12, 2024 |
| Ambarella Inc · AMBA | 29,516 | — |
| Ordinary shares | 29,516 | Sep 2, 2025 |
| Restricted units | 1,559 | Mar 15, 2023 |
| Fortinet Inc · FTNT | 14,487 | — |
| Common stock | 14,487 | Feb 13, 2015 |
| Restricted units | 3,313 | Feb 13, 2015 |
| Sandisk Corp · SNDK | 6,263 | — |
| Common stock | 6,263 | Jun 18, 2015 |
| Options | 6,250 | Jun 18, 2015 |
| INPHI Corp · IPHI | 0 | — |
Ownership percentages elsewhere on the site count common and ordinary shares only, because that is what shares outstanding are measured in. Everything above is a real holding; not all of it is a share of the company.
Activity
InsidersInstitutions
This person's trades in company stock, across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Mar 17, 2025 | Sell Open-market sale | ACM ACM Research, Inc. Class A Common Stock | $4.90M | -163K -62.02% | 100,002 0.14% of shares | medium |
| Feb 12, 2021 | Sell Open-market sale | ACM ACM Research, Inc. Class A Common Stock | $1.20M | -10K -32.15% | 21,102 0.03% of shares | medium |
| Sep 22, 2021 | Sell Open-market sale | AMBA Ambarella Inc |