Amentum Holdings, Inc. reports developments tied to its advanced engineering and technology solutions for U.S. and allied government agencies, international customers and commercial markets. Company news commonly covers mission support contracts, nuclear engineering and decommissioning work, space systems operations, defense logistics, aviation support, digital infrastructure and environmental services.
Recurring updates also include quarterly earnings communications, contract awards, joint-venture activity, operational expansions and investor relations or governance changes. Amentum’s releases frame its work across science, security and sustainability, including NASA ground systems support, small modular reactor programs, nuclear research-site cleanup, aerial firefighting operations and Indo-Pacific logistics capabilities.
Amentum (AMTM) has entered into a Memorandum of Understanding with Kyoto Fusioneering to pursue international cooperation on fusion energy commercialization.
The framework covers the United Kingdom, Japan and United States. The companies intend to pursue joint opportunities in public and private fusion programs, combining Amentum’s engineering and program delivery capabilities with Kyoto Fusioneering’s fusion systems. They also plan to explore advanced digital and AI-driven engineering tools. Amentum sees potential for these tools to improve design cycles and predictive performance as fusion moves toward commercially viable plants.
Amentum (NYSE: AMTM) has expanded its Colorado Springs presence with a new facility at the Catalyst Campus for Technology and Innovation. The facility provides secure work environments for engineering, modernization, and sensitive defense and space programs. Amentum said the location supports closer collaboration with government, industry and academic partners.
Amentum (AMTM) will host its fourth-quarter and full fiscal year 2026 earnings conference call on November 24, 2026. The call begins at 8:30 AM EST and covers the fiscal year ending October 2, 2026. Results will be released before the call. A public webcast and subsequent replay, earnings release, presentation slides and supplemental financial disclosures will be available through Amentum’s investor relations website.
Amentum (AMTM) opened its Global Nuclear headquarters in Oak Ridge, Tennessee, centralizing operations for its international nuclear business.
The facility houses the company’s Nuclear Center of Excellence and employs more than 150 subject-matter experts. Amentum also launched its Nuclear Scholars Program with Roane State Community College and the University of Tennessee, Knoxville, committing $500,000 over five years to curriculum development and scholarships. Combined with other Amentum-led local STEM sponsorships and donations, student support for the two institutions exceeds $1 million. The program plans its first U.S. student cohort in late 2026 and integration with international academic partners in fall 2027.
Amentum (AMTM) joint venture has been selected as preferred supplier for a Sellafield program valued at up to $2.78 billion. The Projects and Asset Care Execution (PACE) framework covers asset care and asset creation supporting Sellafield’s spent fuel management and retrievals mission. The program value is also stated as £2.1 billion; it is not identified as Amentum’s individual share.
Lot 1 will be delivered by OneAxIoM, a joint venture between Amentum and Mitie, supported by Assystem and Mott MacDonald. The initial contract duration is nine years, with an optional six-year extension. Work spans engineering and design, procurement, installation, plant modification, commissioning, dismantling and ongoing asset care. Amentum sees PACE as a long-term growth opportunity that broadens its scope at Sellafield. Formal award remains pending until final contractual arrangements are concluded.
Amentum (NYSE: AMTM) has been selected for strategic positions on two UK energy frameworks awarded by Scottish and Southern Electricity Networks (SSEN) Transmission, under three-year agreements. Amentum will be the exclusive provider of high-end cybersecurity engineering services to digitize and enhance the security and resilience of the UK energy grid.
Amentum (NYSE: AMTM) has been awarded the $974 million Center Maintenance, Operations, and Engineering II (CMOE II) contract at NASA Langley Research Center in Hampton, Virginia. The company will support advanced research systems, provide engineering services, and manage maintenance and utilities across institutional and research facilities.
According to Amentum, this award extends its more than six-decade partnership with NASA and includes work on wind tunnels, laboratories, infrastructure modernization, and automation of laboratory and wind tunnel testing systems.
Amentum (NYSE: AMTM) has been selected for a new five-year Babcock International Group Engineering Services Framework, enabling it to support nuclear, marine, land, aviation and mission systems for the UK Armed Forces domestically and overseas.
The framework is intended to streamline procurement, deepen long-term partnerships and extend Amentum’s decades-long role across key UK naval bases and dockyards, including support for Astute- and Dreadnought-class submarine infrastructure and wider Royal Navy platforms.
Amentum (NYSE: AMTM) announced that Australian Naval Infrastructure (ANI) has selected a joint venture between Amentum and Laing O’Rourke as its Capability Partner for a long-term contract to support delivery of a nuclear-powered submarine construction yard at Osborne in South Australia.
The joint venture will play a central role in developing the new shipyard where Australia’s SSN-AUKUS nuclear-powered submarines will be built under the AUKUS trilateral agreement. According to Amentum, the team will lead governance, assurance, logistics, commissioning, digital engineering, supply chain quality and integration of construction expertise into design. The Capability Partner will provide nuclear-related program management, construction management and safety leadership within ANI’s Integrated Delivery Office, coordinating work packages and contractor engagement across nuclear and non-nuclear yard areas.
The new yard will enable Australia to build and sustain conventionally armed, nuclear-powered submarines for the first time and is described as critical to national security, defense industrial capability and job creation in South Australia.
Amentum (NYSE: AMTM) reported third quarter FY 2026 revenues of $3.49 billion, down 2% year-over-year, with GAAP net income of $66 million and diluted EPS of $0.27. Adjusted EBITDA rose 6% to $290 million with an 8.3% margin, and adjusted diluted EPS increased 20% to $0.67. Free cash flow was $135 million, up 35%.
The company generated $146 million of operating cash flow and ended the quarter with $459 million in cash and $3.88 billion of gross debt, after a voluntary $125 million term loan repayment. Backlog grew 8% to $48.2 billion, funded backlog rose 10% to $6.2 billion, and last-twelve-month book-to-bill was 1.3x.
Amentum highlighted over $400 million in new global nuclear energy awards, about $250 million in critical digital infrastructure contracts, more than $1 billion in classified defense awards, and large NASA wins including the ~$500 million COSMOS JV award and the $974 million, 10-year CMOE II contract. FY 2026 guidance was updated to revenues of $13.8–$13.95 billion, adjusted EBITDA of $1.115–$1.14 billion, adjusted diluted EPS of $2.40–$2.50, and free cash flow of $525–$575 million.