Stepien Thomas M — Chief Executive Officer
Insider trading activity for Stepien Thomas M sourced from SEC EDGAR Form 4 filings.
Overview
- Title: Chief Executive Officer
- Company: Amprius Technologies, Inc.
- Total insider trades: 11
- Total buy volume: $0
- Total sell volume: $1.3M
- Last trade: Aug 25, 2026
Recent Trades
| Date | Insider | Ticker / Company | Type | Shares | Value |
|---|---|---|---|---|---|
| Aug 25, 2026 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | BUY | 346 | N/A |
| Aug 25, 2026 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | OTHER | 5,000 | N/A |
| Aug 24, 2026 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | SELL | 8,000 | $80K |
| Aug 21, 2026 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | SELL | 23,529 | $243K |
| Jun 4, 2026 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | SELL | 2,000 | $42K |
| Jun 4, 2026 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | OTHER | 36,914 | N/A |
| Jun 4, 2026 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | OTHER | 36,914 | N/A |
| Jun 4, 2026 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | OTHER | 30,384 | N/A |
| May 27, 2026 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | SELL | 4,375 | $75K |
| May 21, 2026 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | SELL | 60,702 | $898K |
| Dec 19, 2025 | Stepien Thomas M | AMPX Amprius Technologies, Inc. | OTHER | 200,000 | N/A |