Constantin Ionel Stefan, Chief Technology Officer at Amprius Technologies, Inc. (AMPX), sold 3,208 shares at $17.19 ($55K) on 2026-05-27, disclosed to the SEC on 2026-05-28.
Seasonal sale ($55k) by Chief Technology Officer — this insider has traded AMPX in May in at least three consecutive prior years. Pattern-driven, low signal.
Negative factors outweigh the positive ones.
| Filing → |
| AMPX | SELL | 2026-02-24 | $258K | — | Filing → |
| AMPX | SELL | 2026-01-30 | $953K | — | Filing → |
| AMPX | SELL | 2026-01-23 | $13.6M | — | Filing → |