Amprius Technologies Business Summary

Amprius Technologies, Inc. (AMPX) generates revenue through the design, development, and commercialization of ultra-high-energy-density lithium-ion batteries featuring its proprietary silicon nanowire anode technology. The company operates a capital-light business model, leveraging a global contract manufacturing network—including the Amprius Korea Battery Alliance and domestic partnerships with Nanotech Energy—to scale production of its SiMaxx and SiCore product platforms. Its primary business segments target high-performance applications in aviation (unmanned aerial systems and eVTOLs), defense (NDAA-compliant power solutions), and the burgeoning electric vehicle (EV) and robotics markets. Positioned as a premium provider of the industry's highest energy-density cells, Amprius competes directly with next-generation battery developers such as Enovix, QuantumScape, and SES AI, distinguishing itself by maintaining a significant lead in commercialized gravimetric energy density and established flight-proven deployments. The company was founded by Dr. Kang Sun, Stanford Professor Yi Cui, and Mark Platshon, drawing on deep academic and industrial roots in materials science. Current leadership is headed by CEO Tom Stepien, who assumed the role in January 2026 following a successful tenure as CEO of South 8 Technologies and leadership roles at Applied Materials. He is supported by CTO Dr. Constantin Ionel Stefan, an expert in silicon anode industrialization, and CFO Ricardo Rodriguez. The company’s pedigree is further bolstered by a distinguished Board of Directors that includes Nobel Laureate and former U.S. Secretary of Energy Dr. Steven Chu, alongside Chairman Don Dixon of ForgePoint Capital. Notable institutional backing and strategic investment have historically included Airbus Ventures, Kleiner Perkins, and IPV Capital, reflecting the company's critical role in the aerospace and defense supply chains.