Constantin Ionel Stefan Sells 1,600 Shares of Amprius Technologies (NYSE:AMPX) Stock

Amprius Technologies, Inc. (NYSE:AMPX) CTO Constantin Ionel Stefan sold 1,600 shares of Amprius Technologies stock in a transaction that occurred on Friday, January 23rd. The shares were sold at an average price of $12.00, for a total transaction of $19,200.00. Following the completion of the sale, the chief technology officer owned 748,696 shares of the company’s stock, valued at approximately $8,984,352. The trade was a 0.21% decrease in their ownership of the stock. The transaction was disclosed in a filing with the SEC, which can be accessed through this link.

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

• 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 value of $879,360.00.
• On Thursday, January 22nd, Constantin Ionel Stefan sold 492,827 shares of Amprius Technologies stock. The shares were sold at an average price of $12.04, for a total value of $5,933,637.08.
• On Thursday, December 11th, Constantin Ionel Stefan sold 198,255 shares of Amprius Technologies stock. The stock was 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 transaction of $252,241.92.

Amprius Technologies Stock Down 6.5%

AMPX stock opened at $11.17 on Friday. Amprius Technologies, Inc. has a 12 month low of $1.70 and a 12 month high of $16.03. The firm has a market cap of $1.46 billion, a P/E ratio of -42.97 and a beta of 3.04. The company’s 50-day moving average price is $10.11 and its two-hundred day moving average price is $9.85.

Amprius Technologies (NYSE:AMPX) last posted its quarterly earnings results 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 net margin of 53.16% and a negative return on equity of 38.85%. The business had revenue of $21.43 million for the quarter, compared to analyst estimates of $16.45 million. Equities 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

Institutional Trading of Amprius Technologies

Hedge funds and other institutional investors have recently made changes to their positions in the company. Bank of America Corp DE raised its holdings in Amprius Technologies by 31.1% in the 4th quarter. Bank of America Corp DE now owns 12,890 shares of the company’s stock valued at $36,000 after buying an additional 3,055 shares during the last quarter. Ameritas Investment Partners Inc. increased its position in Amprius Technologies by 2,043.2% in the 2nd quarter. Ameritas Investment Partners Inc. now owns 9,516 shares of the company’s stock valued at $40,000 after acquiring an additional 9,072 shares during the period. Quarry LP bought a new position in shares of Amprius Technologies during the third quarter valued at $42,000. Rhumbline Advisers lifted its holdings in shares of Amprius Technologies by 61.1% during the first quarter. Rhumbline Advisers now owns 15,690 shares of the company’s stock worth $42,000 after purchasing an additional 5,951 shares during the period. Finally, Legal & General Group Plc grew its stake in shares of Amprius Technologies by 1,385.4% in the second quarter. Legal & General Group Plc now owns 10,383 shares of the company’s stock worth $44,000 after purchasing an additional 9,684 shares during the last quarter. 5.04% of the stock is currently owned by institutional investors.

Analyst Ratings Changes

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

About Amprius Technologies

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.