Amentum (NYSE:AMTM), a global advanced engineering and technology company, has been named to the list of America’s Best Companies 2026 by TIME Magazine. America’s Best Companies, an annual ranking by TIME magazine in partnership with Statista, identifies top-performing U.S. companies using a data-driven evaluation across employee satisfaction, financial strength, and sustainability transparency.

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TIME America's Best Companies 2026 in partnership with Statista

"Recognition in TIME Magazine’s America’s Best Companies 2026 is an accolade reflecting the tremendous efforts and commitment of our employees, whose talent and dedication make Amentum a leader in solving the world’s science, security and sustainability challenges," said John Heller, Amentum chief executive officer. "We strive for excellence not just in what we achieve, but also in how we operate—with integrity, purpose, and a focus on impact for our clients and stakeholders."

"This recognition is a direct reflection of our people-first culture and the incredible community we have built at Amentum. We prioritize the needs of our team members because we know they are the foundation of our success," said Darren Burton, Amentum chief people officer. "This award also highlights our ongoing efforts to create a sustainable future through responsible business practices and thoughtful governance. I want to thank every employee who helped make this award possible – your voice, dedication, and contributions are what truly place Amentum among the best."

About Amentum

Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, we have approximately 50,000 employees in more than 70 countries across all 7 continents.

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Forward-Looking Statements

This press release contains or incorporates by reference statements by Amentum Holdings, Inc. (the "Company") that relate to future events and expectations and, as such, constitute "forward-looking statements" as that term is defined in the Private Securities Litigation Reform Act of 1995 and other federal securities laws. These forward-looking statements may be characterized by terminology such as "believe," "project," "expect," "anticipate," "estimate," "forecast," "outlook," "target," "endeavor," "seek," "predict," "intend," "strategy," "plan," "may," "could," "should," "will," "would," "will be," "will continue," "will likely result," or the negative thereof or variations thereon or similar terminology generally intended to identify forward-looking statements. All statements, other than historical facts, including, but not limited to, statements regarding the anticipated work and revenue under the awarded contract, and the Company’s objectives, expectations and intentions, applicable legal, economic and regulatory conditions, and any assumptions underlying any of the foregoing, are forward-looking statements.

A number of important factors could cause actual results to differ materially from those contained in or implied by these forward-looking statements, including those factors discussed in our filings with the Securities and Exchange Commission (SEC), including, among others: the occurrence of an accident or safety incident; the ability of the Company to control costs, meet performance requirements or contractual schedules; and other factors set forth under Item 1A, Risk Factors in our Annual Report on Form 10-K for the fiscal year ended September 27, 2024, which can be found at the SEC’s website at www.sec.gov or the Investor Relations portion of our website at www.amentum.com. Any forward-looking statement speaks only as of the date on which it is made, and the Company assumes no obligation to update or revise such statement, whether as a result of new information, future events or otherwise, except as required by applicable law.

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Media Contact:

Chanel Mann

Chanel.Mann@amentum.com

Investor Contact:

Joseph DeNardi

IR@amentum.com