Amprius technologies director Kang Sun sells $642,186 in stock

Amprius Technologies' director Kang Sun sold 62,101 shares of the company's common stock on August 21, 2026. The transaction amounted to $642,186, with shares exchanged at prices between $10.10 and $10.48. This sale was part of non-discretionary, sell-to-cover arrangements required by the issuer to cover tax withholding obligations linked to the vesting of restricted stock units.

The stock's price is currently $10.18, down 4.2% over the past week, indicating the high volatility that has characterized AMPX shares. According to InvestingPro analysis, the stock seems overvalued relative to its fair value. Following these transactions, Mr. Sun directly owns 1,218,397 shares, including 911,688 restricted stock units, and indirectly owns 56,406 shares through the KANG & CECILLIA SUN FAMILY REVOCABLE TRUST, which he and his spouse co-trust.

Meanwhile, Amprius Technologies reported strong second-quarter financial results, with revenue reaching $34.02 million, exceeding analysts' expectations of $29.29 million. The company's adjusted earnings per share were negative $0.02, matching forecasts. Amprius has also raised its full-year revenue guidance to at least $140 million, up from $130 million, and increased gross margin guidance to at least 28%.

The firm ended the quarter with $74.5 million in cash and no debt. Additionally, Amprius Technologies extended its industrial lease for its Fremont, California facility through June 2034, including two options for further five-year renewals and annual rent escalations. These recent developments suggest a period of growth and stability for Amprius Technologies.