Amprius Technologies Appoints Ricardo C. Rodriguez as Chief Financial Officer

Seasoned financial leader with extensive public company experience and a proven track record in electrification and scaling advanced technologies joins Amprius to drive next phase of growth

Amprius Technologies, Inc. ("Amprius" or the "Company") (NYSE:AMPX), a leader in next-generation lithium-ion batteries with its Silicon Anode Platform, today announced the appointment of Ricardo C. Rodriguez as Chief Financial Officer (CFO), effective immediately. As part of a planned transition and as previously disclosed, prior Company CFO Sandra Wallach is retiring and will support the Company in the short term.

Rodriguez brings more than two decades of leadership experience in finance, strategy, and operations across the automotive, mobility, and broader technology sectors. He most recently served as CFO and Treasurer of Aspen Aerogels ("Aspen") (NYSE:ASPN), where he guided the company through a critical growth phase that included raising significant growth capital, expanding operations, and strengthening Aspen's positioning as a leading electrification materials provider. Prior to that, he was Aspen's Chief Strategy Officer, playing a central role in commercial expansion and long-term strategic planning.

"Ricardo is a proven financial and strategic leader with deep expertise in electrification and advanced technologies," said Dr. Kang Sun, CEO of Amprius Technologies. "His proven track record of driving growth with financial discipline in high-performance markets will serve as a valuable guide as we expand our commercial reach, scale global manufacturing, and reinforce Amprius' leadership in advanced battery technology."

"I would also like to publicly thank Sandra Wallach for her service to Amprius over the last several years. Sandra's contributions to our Company are many, including playing a pivotal role in our successful transition to becoming a public company as well as her ongoing dedication in acting as a true steward of capital for Amprius. We wish her all the best in well-deserved retirement."

Rodriguez added: "I am honored to join this Company at such a pivotal inflection point in its journey. Amprius is at the forefront of redefining what is possible in electrification with its silicon anode technology. I greatly appreciate the opportunity to help advance our strategy and expand this breakthrough platform, powering the future of aviation, defense, and advanced mobility. I look forward to working closely with our finance and leadership teams as well as our global partners to build on Amprius' momentum as we continue to efficiently scale our operations."

Earlier in his career, Rodriguez was Corporate Strategy Director at Aptiv (NYSE:APTV), where he launched and built the company's Vehicle Electrification Systems group. He also held senior roles at ClearMotion, GM's OnStar division; Amazon; and Fiat Chrysler Automobiles (now Stellantis). He began his career in investment banking at Lazard, where he focused on automotive mergers and acquisitions and restructuring.

Rodriguez earned a BS in Mechanical Engineering from General Motors Institute/Kettering University and an MBA from Harvard Business School.

For more information, please visit the Amprius investor relations website at ir.amprius.com.

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.

Forward-Looking Statements

This press release includes "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, each as amended. Forward-looking statements may be identified by the use of words such as "estimate," "plan," "project," "forecast," "intend," "expect," "anticipate," "believe," "seek," "will" or other similar expressions that predict or indicate future events or trends or that are not statements of historical matters. These forward-looking statements include, but are not limited to, statements regarding the ability of Amprius to advance its strategy, expand its battery platform, expand its commercial reach, scale its operations and global manufacturing, and reinforce Amprius' leadership in advanced battery technology. These statements are based on various assumptions, whether or not identified in this press release, and on the current expectations of Amprius' management and are not predictions of actual performance. Actual results could differ materially from these forward-looking statements as a result of certain risks and uncertainties. These forward-looking statements are subject to a number of risks and uncertainties, including Amprius' liquidity position; risks related to the rollout of Amprius' business and the timing of expected business milestones; Amprius' ability to commercially produce high performing batteries; the effects of competition on Amprius' business; supply shortages in the materials necessary for the production of Amprius' products; and changes in domestic and foreign business, market, financial, political and legal conditions. More information on these risks and uncertainties that may impact the operations and projections discussed herein can be found in the documents we filed from time to time with the Securities and Exchange Commission (the "SEC"), all of which are available on the SEC's website at www.sec.gov. There may be additional risks that Amprius does not presently know or that Amprius currently believes are immaterial that could also cause actual results to differ from those contained in the forward-looking statements. In addition, forward-looking statements reflect Amprius' expectations, plans or forecasts of future events and views as of the date of this press release. These forward-looking statements should not be relied upon as representing Amprius' assessments as of any date subsequent to the date of this press release. Accordingly, undue reliance should not be placed upon the forward-looking statements. Except as required by law, Amprius specifically disclaims any obligation to update any forward-looking statements.

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Investors

Tom Colton, Greg Bradbury

Gateway Group, Inc.

949-574-3860

IR@amprius.com

Media

Zach Kadletz, Brenlyn Motlagh

Gateway Group, Inc.

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