Insider Selling: Amprius Technologies (NYSE:AMPX) CTO Sells $426,129.48 in Stock

Amprius Technologies, Inc. (NYSE:AMPX) CTO Constantin Ionel Stefan sold 28,812 shares of the firm’s stock in a transaction that occurred on Thursday, May 21st. The stock was sold at an average price of $14.79, for a total value of $426,129.48. Following the sale, the chief technology officer directly owned 804,518 shares of the company’s stock, valued at $11,898,821.22. This represents a 3.46% decrease in their position. The transaction was disclosed in a document filed with the Securities & Exchange Commission, which can be accessed through this hyperlink. The sale was made to cover tax withholding obligations related to the vesting of equity awards.

Constantin Ionel Stefan also recently made the following trade(s):

• On Wednesday, May 27th, Constantin Ionel Stefan sold 3,208 shares of Amprius Technologies stock. The shares were sold at an average price of $17.19, for a total transaction of $55,145.52.

Amprius Technologies Price Performance

Shares of Amprius Technologies stock opened at $21.31 on Friday. The business has a 50-day simple moving average of $18.07 and a 200 day simple moving average of $13.73. The firm has a market capitalization of $3.02 billion, a price-to-earnings ratio of -71.03 and a beta of 2.20. Amprius Technologies, Inc. has a one year low of $2.55 and a one year high of $22.80.

Amprius Technologies (NYSE:AMPX) last released its quarterly earnings data on Wednesday, May 6th. The company reported ($0.04) earnings per share for the quarter, missing the consensus estimate of ($0.02) by ($0.02). The business had revenue of $28.54 million for the quarter, compared to analyst estimates of $25.72 million. Amprius Technologies had a negative return on equity of 17.48% and a negative net margin of 43.98%.Amprius Technologies has set its FY 2026 guidance at –0.060 EPS. On average, sell-side analysts expect that Amprius Technologies, Inc. will post -0.07 EPS for the current year.

Key Stories Impacting Amprius Technologies

Here are the key news stories impacting Amprius Technologies this week:

• Positive Sentiment: Traders bought 46,001 call options on Amprius, a 134% jump above average, suggesting rising speculative demand for upside in AMPX.
• Positive Sentiment: A recent market analysis highlighted Amprius as a June catalyst stock, citing expected updates on capacity, ecosystem development, and backlog, with analysts forecasting roughly 90% revenue growth and continued rapid expansion.
• Neutral Sentiment: Insider selling disclosed this week included director Donald R. Dixon, CEO Thomas M. Stepien, CTO Constantin Ionel Stefan, and director Kang Sun. Several sales were small, and management said some were made to cover tax withholding tied to equity vesting.
• Neutral Sentiment: A research note on the broader silicon anode battery market projected strong long-term growth, which is supportive for Amprius because the company is one of the commercial players in this space.
• Negative Sentiment: Block & Leviton said it is investigating Amprius for potential securities law violations, which could create overhang and legal uncertainty for investors.

Analyst Upgrades and Downgrades

Several equities analysts have weighed in on the company. B. Riley Financial raised their price objective on Amprius Technologies from $16.00 to $22.00 and gave the company a “buy” rating in a research note on Monday, March 9th. Wall Street Zen cut shares of Amprius Technologies from a “hold” rating to a “sell” rating in a report on Saturday, May 9th. Craig Hallum upped their target price on Amprius Technologies from $17.00 to $21.00 and gave the company a “buy” rating in a report on Friday, March 6th. William Blair reiterated an “outperform” rating on shares of Amprius Technologies in a report on Friday, March 6th. Finally, Needham & Company LLC reissued a “buy” rating and set a $20.00 price objective on shares of Amprius Technologies in a report on Tuesday, March 10th. Eight analysts have rated the stock with a Buy rating and one has issued a Sell rating to the company’s stock. According to MarketBeat.com, the company presently has a consensus rating of “Moderate Buy” and an average target price of $20.25.

Institutional Trading of Amprius Technologies

A number of institutional investors and hedge funds have recently added to or reduced their stakes in AMPX. Bank of America Corp DE grew its position in Amprius Technologies by 31.1% during the 4th quarter. Bank of America Corp DE now owns 12,890 shares of the company’s stock valued at $36,000 after purchasing an additional 3,055 shares during the last quarter. AQR Capital Management LLC raised its stake in shares of Amprius Technologies by 86.7% in the first quarter. AQR Capital Management LLC now owns 77,764 shares of the company’s stock worth $208,000 after purchasing an additional 36,116 shares during the last quarter. Millennium Management LLC boosted its holdings in shares of Amprius Technologies by 94.5% during the 1st quarter. Millennium Management LLC now owns 1,396,013 shares of the company’s stock valued at $3,741,000 after acquiring an additional 678,442 shares during the last quarter. Goldman Sachs Group Inc. grew its stake in shares of Amprius Technologies by 128.6% during the 1st quarter. Goldman Sachs Group Inc. now owns 244,646 shares of the company’s stock valued at $656,000 after purchasing an additional 137,640 shares during the period. Finally, Rhumbline Advisers boosted its stake in shares of Amprius Technologies by 61.1% during the 1st quarter. Rhumbline Advisers now owns 15,690 shares of the company’s stock worth $42,000 after acquiring an additional 5,951 shares during the last quarter. Hedge funds and other institutional investors own 5.04% of the company’s stock.

Amprius Technologies Company Profile

Amprius Technologies, Inc (NYSE: AMPX) is a U.S.-based developer of high-energy-density lithium-ion batteries that leverage silicon anode technology to deliver performance levels beyond conventional graphite-based cells. The company’s batteries are designed to offer industry-leading gravimetric energy density, enabling longer run times and reduced weight for portable power applications. Amprius blends advanced materials science and scalable manufacturing processes to commercialize next-generation battery solutions.

At the core of Amprius’ product portfolio are cylindrical and prismatic cells that employ a proprietary silicon nanowire anode, which supports high charge/discharge rates while maintaining cycle life.