ZHANG KER (CIK 1266870) reported 6 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-09-15). Recent activity: Sell AMBQ (9,100 shares), Sell AMBQ (900 shares), Buy AMBQ (1,785 shares), Sell AMBQ (185 shares), Buy AMBQ (4,957 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-15 | Ambiq Micro, Inc. (AMBQ) | Director | Sell | 9,100 | $576,809 |
| 2026-09-15 | Ambiq Micro, Inc. (AMBQ) | Director | Sell | 900 | $57,552 |
| 2026-09-09 | Ambiq Micro, Inc. (AMBQ) | Director | Buy | 1,785 | $10,496 |
| 2026-09-09 | Ambiq Micro, Inc. (AMBQ) | Director | Sell | 185 | $10,530 |
| 2026-06-10 | Ambiq Micro, Inc. (AMBQ) | Director | Buy | 4,957 | $0 |
| 2025-07-31 | Ambiq Micro, Inc. (AMBQ) | Director | Buy | 23,809 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-09-15