Stefan Constantin Ionel, Chief Technology Officer at Amprius Technologies, sold 28,812 shares of common stock on May 21, 2026, totaling $426,083.
The sale comes as AMPX shares have surged 558% over the past year, currently trading at $17.83.
Shares were sold at an average price of $14.79, within a range of $14.54 to $15.08. This sell-to-cover transaction was to fund tax withholding obligations related to restricted stock units.
Following the transaction, Mr. Ionel directly holds 804,518 shares, including 591,183 restricted stock units.
According to Bond.az analysis, AMPX appears overvalued at current levels. The stock typically trades with high price volatility.
In other recent news, Amprius Technologies reported Q1 2026 earnings with a net loss of $5 million, or -$0.04 per share, missing analysts' expectations of -$0.0278. Revenue of $28.5 million exceeded the forecast of $25.32 million.
The company also announced a collaboration with Matternet to supply batteries for drone delivery aircraft, with volume production targeted for early 2027.
