Hu Chenming (CIK 1316320) reported 2 SEC Form 4 insider transactions across 2 companies over the past 18 months (most recent 2025-09-04). Recent activity: Buy AMBA (2,498 shares), Sell ACMR (163,308 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-09-04 | AMBARELLA INC (AMBA) | Director | Buy | 2,498 | $0 |
| 2025-03-19 | ACM Research, Inc. (ACMR) | Director | Sell | 163,308 | $4.9M |
Source: SEC Form 4 filings · as of 2025-09-04