Amprius Technologies
Fremont, California, United States · Automotive, Battery, Biomass Energy
Amprius Technologies (NYSE: AMPX) is at the forefront of transforming electric mobility with its revolutionary Silicon Anode lithium-ion battery. The company is powering a new era, offering a drop-in replacement for conventional lithium-ion batteries while delivering up to 80% higher energy density. Leveraging its patented silicon anode platform, the company’s commercially proven batteries deliver
Key facts
- Headquarters
- Fremont, California, United States
- Employees
- 86
- Industries
- Automotive, Battery, Biomass Energy
- Status
- Public (AMPX)
- Website
- amprius.com
- Company page
Recent activity at Amprius Technologies
- : Amprius Technologies, Inc. Enters into Agreement with U.S. Government for Project acCELLerate
- : SEC 8-K (1.01): On September 23, 2026, Amprius Technologies, Inc. entered into a material definitive agreement with the U.S. Government titled Other Transaction Agreement for Project acCELLerate. This project aims to develop secure and scalable, domestic high-energy density battery technology under the authority of 10 U.S.C. § 4022. The agreement signifies a commitment from both parties to collaborate on this initiative, which is of strategic importance for enhancing domestic energy solutions. The specifics of the agreement highlight the importance of government and private sector collaboration in advancing battery technology.
- : SEC 8-K (1.01):
- : Amprius and Matternet Collaborate to Enhance Drone Delivery with Advanced Battery Technology
- : SEC 8-K (1.01):
- : SEC 8-K (1.02): On January 30, 2026, Amprius Technologies, Inc. entered into a lease termination agreement with Starboard Platform Brighton JV, LLC, terminating their lease for approximately 774,155 rentable square feet at 4353 East Bromley Lane, Brighton, Colorado. The Lease Termination became effective on January 31, 2026, releasing both parties from further obligations under the previous lease. In connection with this termination, Amprius was required to pay a termination fee of $20,000,000 to the landlord, and will receive a return of its $1,200,000 security deposit by February 5, 2026. The lease, which began in June 2024, had a base rent of approximately $300,000 plus additional costs, with annual increases of around 3.3%.
- : SEC 8-K (1.02): On January 30, 2026, Amprius Technologies, Inc. entered into a lease termination agreement with Starboard Platform Brighton JV, LLC to terminate its existing lease for approximately 774,155 rentable square feet of property located at 4353 East Bromley Lane, Brighton, Colorado. This termination of the lease agreement modifies the company's real estate portfolio and could influence its operational strategy moving forward. There are no specific financial penalties or conditions detailed in the filing that would affect the company’s immediate financial obligations. The strategic implication includes the company's potential relocation or consolidation of operations.
- : SEC 8-K (1.02): On January 30, 2026, Amprius Technologies, Inc. entered into a lease termination agreement with Starboard Platform Brighton JV, LLC, effectively ending their lease for approximately 774,155 rentable square feet of property located at 4353 East Bromley Lane, Brighton, Colorado. This termination of the lease signifies a strategic shift for the company, potentially reflecting changes in their operational needs or a restructuring of their real estate holdings. The decision to terminate this lease may impact their overhead costs and operational footprint moving forward.
- : Amprius Technologies, Inc. has successfully raised US$97.5 million through equity offerings, enhancing its ability to expand manufacturing and automation projects.
- : SEC 8-K (8.01): On January 12, 2026, Amprius Technologies, Inc. announced the successful completion of all sales under its at-the-market equity offering program (ATM Program). The Company executed this program under the At Market Issuance Sales Agreement established on October 2, 2023, with B. Riley Securities, Inc., Cantor Fitzgerald & Co., and H.C. Wainwright & Co., LLC acting as Sales Agents. A total of 25.5 million shares were issued, yielding net proceeds of approximately $97.5 million, including about $19.6 million received during the quarter ending December 31, 2025. The Sales Agreement has now terminated as all authorized shares have been sold, and the Company has indicated it will not make further sales under this program, effectively concluding the ATM Program.
Amprius Technologies funding history
| Date | Round | Amount |
|---|---|---|
| Jan 2026 | Post-IPO Equity | $97.5M |
| Oct 2022 | Seed | $1.0M |
Leadership
- Tom Stepien, Chief Executive Officer
- Ricardo C. Rodriguez, Chief Financial Officer
Verified email and direct lines for Amprius Technologies’s decision-makers are on Fundz. See plans — or book a 15-minute walkthrough.
Employee benefit plans
Amprius Technologies files 2 employee benefit plans with the U.S. Department of Labor, including a retirement plan. The next plan year renews in Dec 2026.
Amprius Technologies in the news
- Amprius Secures $75 Million Grant for American High-Energy Density Battery Production - Business Wire (Sep 28, 2026)
- CAMINUS Signs Contract Manufacturing Agreement with Amprius Technologies for U.S. Pouch Cell Production - PR Newswire (Oct 05, 2026)
- Is It Too Late To Consider Amprius Technologies (AMPX) After Its Sharp Share Price Surge? - Yahoo Finance (Jun 10, 2026)
- Amprius Technologies: Covering Most Of My Short Position (NYSE:AMPX) - Seeking Alpha (Jun 24, 2026)
- Is Amprius Technologies Stock a Buy After Palisades Investment Partners Initiated a Position Worth $4.8 Million? - The Motley Fool (May 01, 2026)
- Amprius Technologies Reports Second Quarter 2026 Financial Results and Recent Business Highlights - Business Wire (Aug 04, 2026)
- Amprius Stock: A Better Battery Business But Not A Cheap Stock (NYSE:AMPX) - Seeking Alpha (Jun 09, 2026)
- Amprius Technologies Sets Upcoming Conference Schedule - Business Wire (Jul 30, 2026)
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About Amprius Technologies: questions and answers
What does Amprius Technologies do?
Amprius Technologies (NYSE: AMPX) is at the forefront of transforming electric mobility with its revolutionary Silicon Anode lithium-ion battery. The company is powering a new era, offering a drop-in replacement for conventional lithium-ion batteries while delivering up to 80% higher energy density. Leveraging its patented silicon anode platform, the company’s commercially proven batteries deliver
Where is Amprius Technologies headquartered?
Amprius Technologies is headquartered in Fremont, California, United States.
How many employees does Amprius Technologies have?
Amprius Technologies has about 86 employees.
Has Amprius Technologies raised funding?
Yes. Fundz has recorded 2 funding events for Amprius Technologies. The most recent, Post-IPO Equity of $97.5M, was in Jan 2026.
Who leads Amprius Technologies?
Tom Stepien is a Chief Executive Officer at Amprius Technologies.
What is the latest news on Amprius Technologies?
On Sep 28, 2026, Amprius Technologies, Inc. Enters into Agreement with U.S. Government for Project acCELLerate
Is Amprius Technologies a public company?
Yes. Amprius Technologies is publicly traded under the ticker AMPX.
Source: Fundz records from SEC filings, press releases and company announcements. How Fundz measures data accuracy