Insider Selling: Amprius Technologies (NYSE:AMPX) CTO Sells $5,933,637.08 in Stock

Amprius Technologies, Inc. (NYSE:AMPX) CTO Constantin Ionel Stefan sold 492,827 shares of the company’s stock in a transaction on Thursday, January 22nd. The shares were sold at an average price of $12.04, for a total transaction of $5,933,637.08. Following the completion of the transaction, the chief technology officer owned 748,696 shares of the company’s stock, valued at $9,014,299.84. This trade represents a 39.70% decrease in their ownership of the stock. The sale was disclosed in a document filed with the SEC, which is accessible through this link.

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

• On Friday, January 23rd, Constantin Ionel Stefan sold 1,600 shares of Amprius Technologies stock. The stock was sold at an average price of $12.00, for a total transaction of $19,200.00.
• On Wednesday, January 21st, Constantin Ionel Stefan sold 73,280 shares of Amprius Technologies stock. The stock was sold at an average price of $12.00, for a total transaction of $879,360.00.
• On Thursday, December 11th, Constantin Ionel Stefan sold 198,255 shares of Amprius Technologies stock. The shares were sold at an average price of $10.51, for a total value of $2,083,660.05.
• On Friday, November 21st, Constantin Ionel Stefan sold 25,024 shares of Amprius Technologies stock. The stock was sold at an average price of $10.08, for a total value of $252,241.92.

Amprius Technologies Stock Performance

NYSE:AMPX opened at $11.17 on Monday. The stock has a market cap of $1.46 billion, a price-to-earnings ratio of -42.97 and a beta of 3.04. Amprius Technologies, Inc. has a one year low of $1.70 and a one year high of $16.03. The business’s 50-day simple moving average is $10.11 and its 200 day simple moving average is $9.87.

Amprius Technologies (NYSE:AMPX) last posted its quarterly earnings data on Thursday, November 6th. The company reported ($0.03) earnings per share (EPS) for the quarter, topping the consensus estimate of ($0.06) by $0.03. Amprius Technologies had a negative return on equity of 38.85% and a negative net margin of 53.16%.The company had revenue of $21.43 million for the quarter, compared to the consensus estimate of $16.45 million. On average, equities research analysts predict that Amprius Technologies, Inc. will post -0.45 EPS for the current year.

Trending Headlines about Amprius Technologies

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

• Positive Sentiment: Northland retained an Outperform rating and a $20 price target for AMPX, naming Amprius a 2026 Top Pick and highlighting its EV-battery potential — a bullish analyst endorsement that could support longer-term upside. Northland Retains Outperform Rating
• Neutral Sentiment: Trading context: AMPX is below its recent highs with elevated volume. The stock sits above its 50-day ($10.11) and 200-day ($9.77) moving averages and has a market cap near $1.46B; fundamentals still reflect losses (negative P/E). These metrics frame risk/reward but don’t change near-term sentiment by themselves.
• Negative Sentiment: Large CTO insider sales: CTO Constantin Ionel Stefan sold three tranches this week — 492,827 shares on Jan 22 at ~$12.04 (~$5.93M), 73,280 shares on Jan 21 at $12.00 (~$879k), and 1,600 shares on Jan 23 at $12.00 (~$19.2k). After these sales he still holds 748,696 shares. The size and timing of these disposals are likely weighing on sentiment and may pressure the stock short-term. CTO Form 4 Filing
• Negative Sentiment: Another insider sale: Kang Sun sold 43,185 shares recently, adding to visible insider liquidity and negative near-term signaling for investors. Kang Sun Sale Report

Analyst Ratings Changes

Several brokerages have weighed in on AMPX. Cantor Fitzgerald raised their price objective on shares of Amprius Technologies from $12.00 to $16.00 and gave the stock an “overweight” rating in a report on Friday, November 7th. Roth Mkm set a $14.00 price target on shares of Amprius Technologies and gave the stock a “buy” rating in a research report on Wednesday, October 22nd. Weiss Ratings reiterated a “sell (e+)” rating on shares of Amprius Technologies in a research note on Wednesday. Oppenheimer restated an “outperform” rating and set a $17.00 price objective on shares of Amprius Technologies in a research note on Tuesday, December 23rd. Finally, Northland Securities set a $20.00 target price on Amprius Technologies in a report on Tuesday, October 7th. Six investment analysts have rated the stock with a Buy rating and one has assigned a Sell rating to the company. According to data from MarketBeat, Amprius Technologies has an average rating of “Moderate Buy” and an average price target of $16.00.

Hedge Funds Weigh In On Amprius Technologies

A number of hedge funds and other institutional investors have recently bought and sold shares of the stock. Quarry LP acquired a new stake in shares of Amprius Technologies during the 3rd quarter worth approximately $42,000. Jones Financial Companies Lllp boosted its position in Amprius Technologies by 353.2% during the 3rd quarter. Jones Financial Companies Lllp now owns 4,532 shares of the company’s stock valued at $50,000 after purchasing an additional 3,532 shares during the period. Parallel Advisors LLC bought a new position in Amprius Technologies during the 3rd quarter worth $54,000. Geneos Wealth Management Inc. acquired a new stake in Amprius Technologies in the third quarter worth $74,000. Finally, Ameritas Investment Partners Inc. lifted its stake in Amprius Technologies by 2,043.2% in the second quarter. Ameritas Investment Partners Inc. now owns 9,516 shares of the company’s stock valued at $40,000 after buying an additional 9,072 shares during the last quarter. 5.04% of the stock is currently owned by institutional investors and hedge funds.

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.