Amprius Technologies, Inc. ("Amprius"), (NYSE:AMPX), a leader in next-generation lithium-ion batteries with its Silicon Anode Platform, today announced its business and financial results for the third quarter ended September 30, 2025.

Amprius posted a letter to shareholders on its Investor Relations website, ir.amprius.com, that details the company's results and provides an update on its business initiatives including delivery of new high-performance batteries to the market and engagements with new customers.

Management will also hold a live conference call and webcast today at 5:00 p.m. Eastern Time (2:00 p.m. Pacific Time) to discuss its financial results and business updates.

Time: 5:00 p.m. ET (2:00 p.m. PT)

Toll-Free Number: 866-424-3442

International Number: 201-689-8548

Webcast: Register and Join

The conference call will be broadcast simultaneously and available for webcast replay here.

About Amprius Technologies, Inc.

Amprius Technologies, Inc. is a leading manufacturer of high-energy and high-power lithium-ion batteries, producing the industry's highest-known energy density cells. The Company's commercially available SiCore^® and SiMaxx™ batteries deliver up to 450 Wh/kg and 1,150 Wh/L, with third-party validation of 500 Wh/kg and 1,300 Wh/L. The Company's corporate headquarters is in Fremont, California, where it maintains an R&D lab and a MWh scale manufacturing facility for the fabrication of silicon anodes and cells. To serve customer demand, Amprius entered into several agreements to secure over 1.8 GWh of contract manufacturing capacity. For additional information, please visit amprius.com. Also, see the Company's LinkedIn page.

View source version on businesswire.com: https://www.businesswire.com/news/home/20251106726698/en/

Investors

Tom Colton, Greg Bradbury

Gateway Group, Inc.

949-574-3860

IR@amprius.com

Media

Zach Kadletz, Brenlyn Motlagh

Gateway Group, Inc.

949-574-3860

Amprius@gateway-grp.com