HSIEH Wen Hsuan (CIK 1835160) reported 9 SEC Form 4 insider transactions across 3 companies over the past 18 months (most recent 2026-06-10). Recent activity: Buy AMBQ (4,957 shares), Buy AMPX (270,251 shares), Sell AMPX (282,500 shares), Sell AMPX (130,646 shares), Buy AMBQ (238,931 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-10 | Ambiq Micro, Inc. (AMBQ) | Director | Buy | 4,957 | $0 |
| 2026-03-13 | Amprius Technologies, Inc. (AMPX) | Director | Buy | 270,251 | $705,355 |
| 2026-03-13 | Amprius Technologies, Inc. (AMPX) | Director | Sell | 282,500 | $5.2M |
| 2026-03-13 | Amprius Technologies, Inc. (AMPX) | Director | Sell | 130,646 | $2.4M |
| 2026-02-20 | Ambiq Micro, Inc. (AMBQ) | Director | Buy | 238,931 | $3.0M |
| 2025-07-31 | Ambiq Micro, Inc. (AMBQ) | Director | Buy | 394,989 | $0 |
| 2025-06-17 | Amprius Technologies, Inc. (AMPX) | Director | Buy | 44,444 | $0 |
| 2025-04-04 | Desktop Metal, Inc. (DM) | Director | Buy | 28,571 | $0 |
| 2025-04-04 | Desktop Metal, Inc. (DM) | Director | Sell | 42,538 | $0 |
Source: SEC Form 4 filings · as of 2026-06-10