Form 4: Amprius Technologies CTO Sells Shares
Insider Transaction (Form 4)
Constantin Ionel Stefan, Chief Technology Officer of Amprius Technologies, Inc., sold 29,681 shares of common stock on August 21, 2026 for $10.34 per share.
Summary
- Open-market sale: disposed of 29,681 Common stock at $10.34 ($306,931) on August 21, 2026; holds 771,629 after (Direct).
Sentiment
Score: 4
Explanation: StockSavvy.ai views this as a mildly negative signal: an insider sold $306,931 of stock on the open market.
Insider Transactions
Constantin Ionel Stefan — Officer (Chief Technology Officer)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-08-21 | Open-market sale | Common stock | 29,681 | $10 | $306.9K | 771,629 |
Key Dates
| Date | Description |
|---|---|
| 2026-08-21 | Open-market sale (29,681 shares) |
Keywords
insider transaction, Form 4, AMPX, Amprius Technologies, Inc., bearish, Constantin Ionel Stefan
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