Stefan Constantin Ionel

CTO Stefan Constantin Ionel sold 567,707 shares in 3 transactions (Jan 21–23) at blended avg $12.03 for $6,830,523.49

Stefan Constantin Ionel, Chief Technology Officer of Amprius Technologies (AMPX), executed 3 separate sales totaling 567,707 shares for $6,830,523.49 ($6.8M) at prices ranging from $12.00 to $12.04, reducing his holdings by 43.1% from 1,316,403 to 748,696 shares. The company is unprofitable (latest quarter net income: $-3,892,000.00; full-year negative) yet growing rapidly (annual revenue growth +167.0%) with a $1.5B market cap. The stock currently trades at $11.17, down 23.6% from its 52-week high of $14.61, suggesting the insider sold near cycle peaks; his cross-ticker track record shows 1 prior sell with 30-day return -9.8%, providing limited predictive context. The near-simultaneous three-day sell pattern and magnitude (567.7K shares) warrants examination of whether this reflects a specific liquidity need or strategic repositioning, particularly given the company's cash-burn profile despite strong top-line growth.

CTO Stefan Constantin Ionel sold 198,255 shares (198.3K) of AMPX at $10.51, reducing stake 20.9% to 748,696 shares.

Stefan Constantin Ionel, Chief Technology Officer, executed a substantial sale of 198,255 shares on 2025-12-11, reducing his holdings by 20.9% from 946,951 shares to 748,696 shares. The transaction occurred at $10.51, a price that sits between the current market price of $10.05 and the 52-week high of $14.61, suggesting the sale was neither executed during a spike nor at a depressed level. The company's financial backdrop shows mixed signals: annual revenue growth accelerated 167.0% year-over-year, but the firm remains unprofitable with net income of $-3,892,000 in the latest quarter and negative full-year results. The stock has declined 31.2% from its 52-week high and 11.0% over the past 30 days, a period that includes this insider sale.