Amprius Technologies (NYSE:AMPX) CTO Constantin Ionel Stefan Sells 73,280 Shares

Amprius Technologies, Inc. (NYSE:AMPX) CTO Constantin Ionel Stefan sold 73,280 shares of the company’s stock in a transaction dated Wednesday, January 21st. The stock was sold at an average price of $12.00, for a total transaction of $879,360.00. Following the sale, the chief technology officer directly owned 748,696 shares of the company’s stock, valued at $8,984,352. This represents a 8.92% decrease in their position. The transaction was disclosed in a document filed with the Securities & Exchange Commission, which is available through this hyperlink.

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 shares were sold at an average price of $12.00, for a total transaction of $19,200.00.
• 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 transaction 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 transaction 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 Price Performance

Shares of NYSE:AMPX opened at $11.17 on Friday. Amprius Technologies, Inc. has a 1 year low of $1.70 and a 1 year high of $16.03. The stock has a market capitalization of $1.46 billion, a price-to-earnings ratio of -42.97 and a beta of 3.04. The company’s 50 day simple moving average is $10.11 and its 200 day simple moving average is $9.82.

Amprius Technologies (NYSE:AMPX) last released its earnings results on Thursday, November 6th. The company reported ($0.03) earnings per share 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 firm had revenue of $21.43 million during the quarter, compared to analysts’ expectations of $16.45 million. As a group, analysts anticipate that Amprius Technologies, Inc. will post -0.45 EPS for the current fiscal year.

Amprius Technologies News Roundup

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 Inflows and Outflows

Institutional investors and hedge funds 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. AQR Capital Management LLC increased its position in Amprius Technologies by 86.7% in the 1st quarter. AQR Capital Management LLC now owns 77,764 shares of the company’s stock valued at $208,000 after acquiring an additional 36,116 shares during the period. Millennium Management LLC raised its stake in shares of Amprius Technologies by 94.5% during the first 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. lifted its holdings in shares of Amprius Technologies by 128.6% during the first quarter. Goldman Sachs Group Inc. now owns 244,646 shares of the company’s stock worth $656,000 after purchasing an additional 137,640 shares during the period. Finally, 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. Institutional investors and hedge funds own 5.04% of the company’s stock.

Analysts Set New Price Targets

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

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.