Constantin Ionel Stefan insider trades
Open-market stock purchases and sales by Constantin Ionel Stefan, Chief Technology Officer at Amprius Technologies, Inc, from SEC Form 4 filings since Sep 14, 2022.
Recent trades
| Date | Stock | Trade | Value |
|---|---|---|---|
| Aug 21, 2026 | AMPX Amprius Technologies, Inc | Sold | $307K |
| May 27, 2026 | AMPX Amprius Technologies, Inc | Sold | $55.2K |
| May 21, 2026 | AMPX Amprius Technologies, Inc | Sold | $426K |
| Mar 4, 2026 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Feb 23, 2026 | AMPX Amprius Technologies, Inc | Sold | $258K |
| Jan 28, 2026 | AMPX Amprius Technologies, Inc | Sold | $476K |
| Jan 28, 2026 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Jan 28, 2026 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Jan 23, 2026 | AMPX Amprius Technologies, Inc | Sold | $19.2K |
| Jan 23, 2026 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Jan 22, 2026 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Jan 22, 2026 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Jan 22, 2026 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Jan 22, 2026 | AMPX Amprius Technologies, Inc | Sold | $5.9M |
| Jan 21, 2026 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Jan 21, 2026 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Jan 21, 2026 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Jan 21, 2026 | AMPX Amprius Technologies, Inc | Sold | $879K |
| Dec 11, 2025 | AMPX Amprius Technologies, Inc | Sold | $2.1M |
| Dec 11, 2025 | AMPX Amprius Technologies, Inc | Bought (not open market) | — |
| Nov 21, 2025 | AMPX Amprius Technologies, Inc | Sold | $252K |
Companies traded
- AMPX Amprius Technologies, Inc: 19 sales, last Aug 21, 2026
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