Amprius Technologies designs, manufactures, and markets high-energy density silicon anode lithium-ion batteries for mobility and defense applications. The company's proprietary silicon nanowire anode technology enables commercially available cells reaching up to 520 Wh/kg energy density and 1,300 Wh/L volumetric energy, with applications in electric aviation, defense systems, drones, eVTOLs, and industrial applications. Amprius operates a capital-light manufacturing model using contract manufacturing partners and maintains R&D and pilot manufacturing facilities in Fremont, California.
Amprius is publicly traded
This company is no longer available on our private secondary market. Shares can be traded publicly under its listed ticker.
Company data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Founded
2008
Employees
84–108
Latest Valuation
$0.84B
September 14, 2022
Funding data and valuation marks are estimates and may be incomplete, stale, erroneous, or revised.
Last updated 06-25-2026
Latest Round
Type
SPAC merger (IPO)
Date
September 14, 2022
Amount
Not disclosed
Valuation
$0.84B
Lead Investors
| Date | Round | Amount Raised | Valuation | Lead Investors |
|---|---|---|---|---|
| September 14, 2022 | SPAC merger (IPO) | Not disclosed | $0.84B | Kensington Capital Acquisition Corp. IV |
| November 1, 2019 | Series C | Not disclosed | — | Not disclosed |
| March 3, 2011 | Series B | Not disclosed | — | Not disclosed |
Tom Stepien
Chief Executive Officer & Board Director
Ricardo C. Rodriguez
Chief Financial Officer
Dr. Ionel Stefan
Chief Technology Officer
Dr. Weijie Wang
Amprius Technologies Fellow
Aaron Bakke
General Manager - US Operations
Ronnie Tao
Vice President of Sales
Andrew Huie
Vice President of Infrastructure
Siyu Jiang
Vice President of Legal Affairs
Competitor list is illustrative and may be incomplete, stale, or erroneous.
Enovix
Public company (NYSE: ENVX) developing high-energy-density silicon lithium-ion batteries for electric vehicles and consumer electronics.
Sila Nanotechnologies
Private company producing silicon-anode powder as drop-in replacement for graphite with partnership with Mercedes-Benz.
Group14 Technologies
Developer of advanced silicon battery technology with patented silicon-carbon composite material (SCC55) for fast charging and extended battery life.
Enevate Corporation
Developer of silicon-dominant lithium-ion battery technology for electric vehicles supporting fast charging and enhanced energy density.
OneD Battery Sciences
Developer of silicon nanowire anode technology (SINANODE platform) for EV-grade lithium-ion batteries.
StoreDot
Developer focused on extreme fast charging (XFC) technology for the electric vehicle battery market.
Amprius Technologies completed its SPAC merger with Kensington Capital Acquisition Corp. IV on September 14, 2022, and began trading on NYSE under ticker AMPX on September 15, 2022. The transaction resulted in gross proceeds of approximately $87 million with a pro forma implied enterprise value of $939 million.
Amprius shares can be purchased through any standard brokerage account — including Fidelity, Charles Schwab, TD Ameritrade, and online platforms like Robinhood or E*TRADE. Search for the ticker to place an order.
Amprius had a valuation of approximately $0.84B at the time of its public offering. Current market capitalization fluctuates with the share price.
Amprius is headquartered in Fremont, CA, United States.
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