Amprius Technologies has appointed Tom Stepien as President to oversee the company’s day-to-day operations, commercial growth, and market expansion to meet the demand for its advanced silicon battery technology.
Stepien has also been appointed as a member of the Company’s Board of Directors, effective May 1, 2025.
Stepien brings over 35 years of leadership experience across customer-focused, innovation-driven technology companies. Most recently, Stepien served as CEO of South 8 Technologies, where he led the commercialization of a novel liquefied gas electrolyte for lithium-ion batteries.
He also co-founded and led Primus Power, a long-duration stationary storage company, and was an Operating Partner at KCK Group, a private equity firm focused on industrial technologies. Earlier in his career, he held leadership roles at Applied Materials, the global semiconductor equipment leader.
Stepien joins Amprius at a pivotal moment as the company ramps up production to meet increasing demand for its high-performance silicon batteries, offering advanced energy density to power electric aviation, defense, and electric mobility platforms. He will be a key driver in expanding strategic partnerships, strengthening customer relationships, and unlocking new growth opportunities in high-impact markets.
Dr. Kang Sun, CEO of Amprius Technologies, commented, “Tom has a rare combination of technical expertise and market leadership at innovative technology companies. As we expand our global footprint, Tom’s decades of experience growing energy and manufacturing businesses will be instrumental in guiding Amprius through the next phase of commercial execution. We look forward to welcoming Tom as we continue our mission to power the future of electrification with next-generation battery technology.”
Stepien added, “Amprius is one of the few companies that combines breakthrough battery innovation with the ability to scale. With a powerful technology platform, an exceptional team, and growing market traction, the company is well-positioned to lead the next wave of electrification. I’m excited to help build on that foundation and expand Amprius’ impact across high-growth sectors where performance and energy density matter most.”
Stepien holds bachelor’s and master’s degrees in mechanical engineering from MIT and is a co-inventor on 11 U.S. and international battery patents. He also serves on the board of Euro Manganese (TSX-V and ASX: EMN), a supplier of battery materials to the electric vehicle industry.
