If You Invested in Amprius Tech (AMPX)

Amprius Technologies, Inc. (NYSE: AMPX) is a manufacturing company focused on high-energy and high-power lithium-ion batteries built on a proprietary Silicon Anode Platform. According to company disclosures, Amprius produces what it describes as the industry’s highest-known energy density cells, targeting demanding applications where weight, endurance, and power delivery are critical.

The company develops, manufactures, and markets lithium-ion batteries and silicon anode cells that are used in mobility applications, including aviation, electric vehicles (EVs), and light electric vehicles (LEVs). Its batteries are used in existing and emerging aviation applications, including unmanned aerial systems such as drones and high-altitude pseudo satellites. Amprius’ technology is designed to provide extended flight times and higher payload capacity for electric aviation customers in commercial, industrial, defense, and public safety segments.

Core technology and products

Amprius’ business centers on its silicon anode lithium-ion battery technology. The company states that its commercially available SiCore® and SiMaxx™ batteries can deliver up to 450 Wh/kg and 1,150 Wh/L, with third-party validation of 500 Wh/kg and 1,300 Wh/L. In some communications, Amprius also highlights a 520 Wh/kg battery model that has been recognized by the Consumer Technology Association as a Best of Innovation honoree in the Sustainability & Energy Transition category.

The company emphasizes that its high-energy-density cells can deliver more than twice the energy of many lithium-ion batteries at the same weight, which can translate into longer missions and increased payload capacity for electric aviation platforms. Amprius’ cells are described as providing both burst power for takeoff and sustained energy for extended flight, supporting safety-related functions such as obstacle avoidance and return-to-home capabilities.

End markets and applications

According to its public statements, Amprius serves a range of high-performance applications across:

• Aviation and aerospace – including unmanned aerial systems (UAS), unmanned aerial vehicles (UAVs), and advanced air mobility platforms.
• Electric mobility – including electric vehicles and light electric vehicles.
• Defense, security, and public safety – where endurance, reliability, and secure supply chains are important.
• Industrial and infrastructure monitoring – such as drone-based inspection and emergency response systems.

The company has highlighted integrations of its SiCore® cells into next-generation drone systems, where its batteries are used to power drone-in-a-box platforms and other UAV solutions. These deployments are intended to support missions that require long range, high reliability, and the ability to carry advanced payloads.

Manufacturing footprint and capacity

Amprius states that its corporate headquarters is in Fremont, California, where it maintains a research and development lab and a manufacturing facility for the fabrication of silicon anodes and cells. Company communications describe this facility as operating at MWh scale for silicon anode and cell production.

To meet customer demand, Amprius reports that it has entered into several agreements to secure more than 2.0 GWh of contract manufacturing capacity worldwide. The company has also announced the formation and expansion of the Amprius Korea Battery Alliance, a consortium of Korean companies across the lithium-ion battery value chain, including materials, components, and production equipment. Through this alliance and other partnerships, Amprius aims to broaden its global manufacturing network and align its operations with requirements such as the U.S. National Defense Authorization Act (NDAA), particularly for defense and critical infrastructure customers.

Supply chain and international partnerships

Amprius has described a strategy of building a globally integrated ecosystem that connects research, production, and market access across multiple regions. The Amprius Korea Battery Alliance is intended to strengthen the company’s supply chain by collaborating with battery manufacturers, materials suppliers, cell component producers, equipment makers, and investment partners in South Korea.

According to company announcements, alliance members are working with Amprius on SiCore® battery cell production, electrode innovation, and equipment manufacturing. The company positions these collaborations as a way to enhance scalability, improve cost efficiency, and support customers in electric mobility, clean energy, and aviation markets.

Capital markets and corporate profile

Amprius Technologies, Inc. is listed on the New York Stock Exchange under the ticker symbol AMPX. The company has described itself in SEC filings as an emerging growth company. In one Form 8-K, Amprius reported the completion of an at-the-market equity offering program established under an At Market Issuance Sales Agreement, through which it sold shares of its common stock up to an aggregate offering price of $100 million.

The company has also reported regular quarterly business and financial updates via press releases and Form 8-K filings, including letters to shareholders and conference calls to discuss results and business developments. These disclosures provide investors with information on operations, contract manufacturing capacity, and progress in commercializing its silicon anode technology.

Leadership and governance developments

Amprius has disclosed several leadership changes through SEC filings and news releases. In one Form 8-K, the company reported that its founder, Dr. Kang Sun, informed the Board of Directors of his intention to step down from the Chief Executive Officer role and transition to an Executive Advisor position while remaining on the Board. The same filing noted that the company’s President, Tom Stepien, was appointed Chief Executive Officer effective January 1, 2026.

Another Form 8-K described the appointment of Ricardo C. Rodriguez as Chief Financial Officer and the planned retirement of the prior CFO, who agreed to continue in a consulting capacity to support a smooth transition. These filings detail compensation terms, equity awards, and severance arrangements, reflecting the company’s governance and executive compensation practices.

Recognition and industry positioning

Amprius has received recognition from the Consumer Technology Association as a Best of Innovation honoree at CES in the Sustainability & Energy Transition category for one of its high-energy-density batteries. The company also participates in industry conferences focused on automotive batteries, energy, and advanced technologies, where it presents on topics such as silicon anode technology and scaling to commercial production.

Through partnerships with drone and aviation companies, as well as its emphasis on high energy density and power performance, Amprius positions its batteries as suitable for next-generation electric aviation and advanced mobility platforms. Company communications describe ongoing collaborations with UAV and advanced air mobility manufacturers that integrate Amprius cells into aircraft battery packs.

Company status

Based on the most recent SEC filings and news releases provided, Amprius Technologies, Inc. continues to operate as a publicly traded company on the NYSE under the symbol AMPX. The filings do not indicate any delisting, deregistration, bankruptcy, or completed merger that would change its status as an independent issuer.