Revenues of $3.5 billion

Net Income of $66 million; Adjusted EBITDA of $290 million

Diluted Earnings Per Share of $0.27; Adjusted Diluted Earnings Per Share of $0.67

Operating Cash Flow of $146 million; Free Cash Flow of $135 million

Backlog of $48.2 billion; Book-to-Bill of 1.1x, Last Twelve Months 1.3x

CHANTILLY, Va.: $AMTM #3rdQuarter--Amentum Holdings, Inc. (“Amentum” or the “Company”) (NYSE: AMTM), a leading advanced engineering and technology company, today announced results for the third quarter ended July 3, 2026.

“We delivered solid third quarter results with strong operating performance, profitability, and free cash flow," said Amentum Chief Executive Officer John Heller. “Although near-term dynamics have impacted our revenue outlook, our strong year-to-date results allow us to increase guidance for both Adjusted EBITDA and Adjusted Diluted EPS. Looking ahead, we’ve made significant progress executing our strategy and our leading business development indicators remain robust including recently announced key wins and partnerships in global nuclear energy. We remain focused on delivering differentiated solutions to our customers and driving long-term value for our shareholders.”

GAAP Results

Revenues of $3,490 million decreased 2% year-over-year driven by a 3% impact from the transition of certain contracts from consolidated to unconsolidated joint ventures and fiscal year 2025 divestitures; partially offset by the ramp-up of new contract awards in critical digital infrastructure and space systems and technologies. Operating income increased as a result of strong operational performance and decreased intangible amortization expense. Net income and diluted earnings per share improved year-over-year, supported by higher operating income and lower interest expense.

Non-GAAP Results

Adjusted EBITDA of $290 million resulted in Adjusted EBITDA Margins of 8.3%, up from 7.7% in the prior year quarter, driven by continued progress on our margin expansion initiatives including a favorable mix shift and strong operational performance. Adjusted Net Income and Adjusted Diluted Earnings Per Share increased primarily as a result of the strong operational performance and lower interest expense.

Non-GAAP Segment Results

Digital Solutions revenues increased 3% year-over-year driven by the ramp-up of new contract awards in critical digital infrastructure and space systems and technologies, partially offset by the fiscal year 2025 divestiture of Rapid Solutions. Adjusted EBITDA increased 2% year-over-year as a result of increased revenue volume, partially offset by the divestiture of Rapid Solutions.

Global Engineering Solutions revenues decreased 5% year-over-year due to contract transitions from consolidated to unconsolidated joint ventures, a fiscal year 2025 divestiture, and the expected ramp-down of other historical programs; partially offset by the ramp up of new contract awards. Adjusted EBITDA increased 9% year-over-year as a result of continued progress on our margin expansion initiatives, favorable contract mix, and strong program performance.

Cash Flow Summary

In the third quarter, Amentum generated $146 million and $3 million of net cash from operating activities and investing activities, respectively, and used $121 million in financing activities. Net cash provided by operating activities was driven by strong cash earnings, disciplined working capital management, and reflects one additional pay cycle compared to the prior year quarter. Net cash provided by investing activities included $11 million in capital expenditures and $10 million in cash proceeds from the sale of a minority stake in a legacy joint venture. Net cash used in financing activities consisted primarily of the $125 million voluntary principal payment on the Term Loan B and the impacts from the first amendment to the credit facility. As of July 3, 2026, Amentum had $459 million in cash and cash equivalents and $3,875 million of gross debt.

Backlog and Contract Awards

As of July 3, 2026, the Company had total backlog of $48.2 billion, compared with $44.6 billion as of June 27, 2025, an increase of 8% driven by $17.7 billion in net bookings and 1.3x book-to-bill. Funded backlog as of July 3, 2026 was $6.2 billion, compared with $5.6 billion as of June 27, 2025, an increase of 10%.

Notable Highlights

• Global Nuclear Energy – Amentum booked over $400 million for the initial engineering, development, and design of advanced nuclear technologies in the growing global nuclear market. These awards support our long-term growth opportunity in next-generation nuclear.
• Continued Growth in Critical Digital Infrastructure – Amentum was awarded approximately $250 million in contracts to support communication networks, cloud and data center infrastructure, and critical technology modernization. These wins build on Amentum’s core strengths in delivering integrated, large-scale digital infrastructure across both commercial and government markets.
• Classified U.S. and International Defense Awards – Amentum was awarded over $1 billion in awards to provide defense engineering, logistics, and modernization solutions for U.S. and allied military operations. These awards reinforce Amentum’s position as a trusted partner supporting global defense readiness and mission sustainment.
• Contract for Organizing Spaceflight Mission Operations and Systems (COSMOS) – Amentum booked ~$500 million associated with NASA’s award of the nine-year COSMOS contract to our mentor-protégé joint venture, to support flight mission operations. The previously announced protest was resolved during the quarter and therefore the award is now reflected in backlog and book-to-bill.
• Center Maintenance Operations and Engineering (CMOE II) – NASA’s Langley Research Center awarded Amentum a $974 million, 10-year IDIQ contract to deliver cutting-edge support for advanced research, systems engineering, and infrastructure modernization. The previously announced protest was resolved during the quarter and therefore the award is now reflected in backlog and book-to-bill.

Fiscal Year 2026 Guidance

Amentum updates its fiscal year 2026 guidance as follows:

Webcast Information

Amentum will host a conference call beginning at 8:30 a.m. Eastern time on Tuesday, August 11, 2026 to discuss the results for the third quarter ended July 3, 2026. The conference call will be webcast simultaneously to the public through a link on the Investor Relations section of the Amentum website at amentum.com. After the call concludes, a replay of the webcast can be accessed on the Investor Relations website.

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 over 70 countries across all 7 continents.

Visit us at amentum.com to learn how we advance the future together.

Cautionary Note Regarding Forward Looking Statements

This release contains or incorporates by reference statements that relate to future events and expectations and, as such, could be interpreted to be “forward-looking statements” as that term is defined in the Private Securities Litigation Reform Act of 1995 and other federal securities laws. 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 statements of historical fact are statements that could be deemed forward-looking statements, including projections of financial performance; statements of plans, strategies and objectives of management for future operations; any statement concerning developments, performance or industry rankings relating to products or services; any statements regarding future economic conditions or performance; any statements of assumptions underlying any of the foregoing; any statements regarding industry and market trends; and any other statements that address activities, events or developments that the Company intends, expects, projects, believes or anticipates will or may occur in the future.

Important factors that could cause actual results to differ materially from such plans, estimates or expectations include, among others: changes in U.S. or global economic, financial, business and political conditions, including changes to governmental budgetary priorities and tariffs and the ongoing conflicts in Europe and the Middle East; our ability to comply with the various procurement and other laws and regulations; risks associated with contracts with governmental entities; reviews and audits by the U.S. government and others; changes to our professional reputation and relationship with government agencies; the occurrence of an accident or safety incident; the ability of the Company to control costs, meet performance requirements or contractual schedules, compete effectively or implement its business strategy; the ability of the Company to retain and hire key personnel, and retain and engage key customers and suppliers; the failure to realize the anticipated benefits of the 2024 transaction with Jacobs Solutions Inc.; potential liabilities associated with shareholder litigation or other settlements or investigations; evolving legal, regulatory and tax regimes; and other factors set forth under Item 1A, Risk Factors in the annual report on Form 10-K (the “Annual Report”), and from time to time in documents that we file with the SEC. The above list of factors is not exhaustive or necessarily in order of importance. For additional information on identifying factors that may cause actual results to vary materially from those stated in forward-looking statements, see the discussions under the section entitled “Risk Factors” in the Annual Report. Any forward-looking statement speaks only as of the date on which it is made, and we assume 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.

Non-GAAP Measures

This release includes the presentation and discussion of Adjusted EBITDA, Adjusted EBITDA Margin, Adjusted Net Income, Adjusted Diluted Earnings Per Share, Free Cash Flow, and Net Leverage, which are not measures of financial performance under Generally Accepted Accounting Principles in the United States (“GAAP”). These non-GAAP measures should be considered only as supplements to, and should not be considered in isolation or used as substitutes for, financial information prepared in accordance with GAAP. Management of the Company believes these non-GAAP measures, when read in conjunction with the Company’s financial statements prepared in accordance with GAAP and, where applicable, the reconciliations herein to the most directly comparable GAAP measures, provide useful information to management, investors and other users of the Company’s financial information in evaluating operating results and understanding operating trends by adjusting for the effects of items we do not consider to be indicative of the Company’s ongoing performance, the inclusion of which can obscure underlying trends. Additionally, management of the Company uses such measures in its evaluation of business performance, particularly when comparing performance to past periods, and believes these measures are useful for investors because they facilitate a comparison of financial results from period to period. The computation of non-GAAP measures may not be comparable to similarly titled measures reported by other companies, thus limiting their use for comparability.

Definitions of applicable non-GAAP measures and reconciliations to the most directly comparable GAAP measures are provided elsewhere in this release.

In addition to the above non-GAAP financial measures, the Company has included backlog, net bookings, and book-to-bill in this release. Backlog is an operational measure representing the estimated amount of future revenues to be recognized under negotiated contracts, and net bookings represent the change in backlog between reporting periods plus reported revenues for the period. Book-to-bill represents net bookings divided by reported revenues for the same period. We believe these metrics are useful for investors because they are an important measure of business development performance and are used by management to conduct and evaluate its business during its regular review of operating results.

AMENTUM HOLDINGS, INC.
UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(in millions, except per share data)
	Three Months Ended								Nine Months Ended
	July 3, 2026				June 27, 2025				July 3, 2026				June 27, 2025
Revenues	$	3,490			$	3,561			$	10,205			$	10,468
Cost of revenues		(3,130	)			(3,193	)			(9,174	)			(9,372	)
Selling, general, and administrative expenses		(122	)			(165	)			(361	)			(440	)
Amortization of intangibles		(94	)			(118	)			(282	)			(358	)
Equity earnings of non-consolidated subsidiaries		28				18				73				47
Operating income		172				103				461				345
Interest expense and other, net		(62	)			(88	)			(209	)			(261	)
Loss on extinguishment of debt		(16	)			(3	)			(16	)			(3	)
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