Chu Steven (CIK 1296381) reported 9 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-16). Recent activity: Buy AMPX (10,423 shares), Buy AMPX (104,132 shares), Sell AMPX (166,632 shares), Buy AMPX (86,143 shares), Buy AMPX (69,422 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-16 | Amprius Technologies, Inc. (AMPX) | Director | Buy | 10,423 | $0 |
| 2026-03-12 | Amprius Technologies, Inc. (AMPX) | Director | Buy | 104,132 | $64,562 |
| 2026-03-12 | Amprius Technologies, Inc. (AMPX) | Director | Sell | 166,632 | $3.0M |
| 2026-03-12 | Amprius Technologies, Inc. (AMPX) | Director | Buy | 86,143 | $224,833 |
| 2026-03-12 | Amprius Technologies, Inc. (AMPX) | Director | Buy | 69,422 | $43,042 |
| 2026-03-12 | Amprius Technologies, Inc. (AMPX) | Director | Sell | 100,000 | $1.9M |
| 2026-03-12 | Amprius Technologies, Inc. (AMPX) | Director | Sell | 50,000 | $910,500 |
| 2026-03-12 | Amprius Technologies, Inc. (AMPX) | Director | Sell | 5,565 | $103,119 |
| 2025-06-17 | Amprius Technologies, Inc. (AMPX) | Director | Buy | 44,444 | $0 |
Source: SEC Form 4 filings · as of 2026-06-16