Amentum Holdings, Inc. (AMTM) Amentum Holdings, Inc. is a provider of critical, technology-driven services, serving both governmental and commercial sectors. Its operations are structured around two distinct segments: Critical Mission Solutions and Cyber & Intelligence. The Critical Mission Solutions (CMS) segment delivers comprehensive support across various domains. This includes testing, training, and operational oversight for advanced missile defense systems. It also furnishes IT and engineering expertise to both defense organizations and the burgeoning space sector. Moreover, CMS offers technological solutions to energy clients, encompassing installation, decommissioning, and vital environmental remediation efforts, in addition to specialized technical consulting services. Meanwhile, the Cyber & Intelligence (C&I) segment focuses on advanced cyber training and sophisticated data analytics for government professionals. It also deploys cutting-edge communication systems and aerial mapping technologies for national security applications, alongside other specialized technical support for U.S. defense and intelligence agencies. Established on November 26, 2019, the company maintains its corporate headquarters in Chantilly, VA.
Sector: Services-Business Services, NEC
Industry: Aerospace & Defense
Amentum Holdings, Inc. NYSE:AMTM Industrials · Aerospace & Defense
Prev close $21.37 -0.56%Close $21.25 0.00% AH close $21.25
Press Release ⚠ 1
Amentum and Kyoto Fusioneering Announce Strategic Collaboration to Accelerate Global Fusion Commercialization
Amentum signed a Memorandum of Understanding with Kyoto Fusioneering to jointly pursue fusion commercialization opportunities across the UK, Japan, and the United States.
The collaboration pairs Amentum's fusion engineering, plant integration, and program delivery expertise with Kyoto Fusioneering's fuel cycle, breeding blanket, and plasma heating technologies.
The agreement is non-binding and includes no contract value or committed revenue, but positions Amentum to capture work as Japan and other markets scale private fusion demonstration programs.
• 5d ago AI analysis › Press Release
Amentum Expands Defense and Space Operations in Colorado Springs
Amentum has expanded its Colorado Springs presence to the Catalyst Campus for Technology and Innovation to accelerate defense and space innovation.
The facility enables secure engagement on sensitive programs supporting missile defense, AI, cyber operations, and space mission support, near Cheyenne Mountain Complex, Peterson and Schriever Space Force Bases.
No financial terms or contract values were disclosed; the move deepens positioning with key defense and space customers.
• 9d ago AI analysis › Press Release ⚠ 1
Deep Isolation Announces Timing of Third Quarter 2026 Earnings Release
Deep Isolation Nuclear (OTCQB: DBHL) announced it will report third quarter 2026 earnings before the market opens on Thursday, November 12, 2026.
An updated investor presentation will be posted to the IR website concurrent with the release.
Note the input ticker AMTM belongs to Amentum, which is only mentioned as a collaborator on Deep Isolation's Cameron, Texas commercialization pilot alongside Halliburton, NAC International and the Deep Borehole Demonstration Center.
• 10d ago AI analysis › Press Release
Deep Isolation Begins Surface Pad Construction for First Full-Scale Deep Borehole Nuclear Waste Disposal Demonstration
Deep Isolation Nuclear (OTCQB: DBHL) began surface site preparation and well pad construction at its Deep Borehole Demonstration Center near Cameron, Texas, an early field milestone for its full-scale nuclear waste disposal demonstration.
The pilot is conducted with a consortium including Halliburton (NYSE: HAL), Amentum (NYSE: AMTM), the Deep Borehole Demonstration Center, NAC International, and Occlusion Nuclear Solutions; pad construction is forecast to complete by December 2026, after which drilling begins.
The work falls under an ARPA-E SCALEUP Ready agreement providing up to $20 million in funding for commercial deployment of Deep Isolation's Universal Canister System.
• 11d ago AI analysis › Press Release
Amentum to Host Fourth Quarter and Full Fiscal Year 2026 Earnings Conference Call on November 24, 2026
Amentum will host a conference call on November 24, 2026 at 8:30 AM EST to discuss Q4 and full fiscal year 2026 results, with the earnings release issued prior to the call.
The call will be webcast publicly via the company's investor relations website, with a replay, slides and supplemental disclosures available at the same link.
This is a scheduling notice only; no financial results or guidance are included.
• 12d ago AI analysis › Press Release
Nuclear Waste Innovator Deep Isolation to Join Leadership Discussion Hosted by The Economist Enterprise in New York
Deep Isolation Nuclear (OTCQB: DBHL) announced CEO Rod Baltzer will speak at 'The energy horizon: responsible power growth,' an Economist Enterprise event on Nov. 9 at the Yale Club in New York.
The panel, which also includes VanEck portfolio manager Shawn Reynolds and Energy Communities Alliance's Laura Hermann, will discuss financing, public confidence, and sustainable waste disposal in nuclear expansion.
Amentum (AMTM) is mentioned only as a collaborator on Deep Isolation's deep borehole Commercialization Pilot launched in January 2026 at Cameron, Texas, alongside Halliburton and NAC International. The release contains no financial results and is promotional in nature.
• 17d ago AI analysis › Press Release ⚠ 1
Nuclear Waste Innovator Deep Isolation Publishes New Slovenian Customer Case Study
Deep Isolation (DBHL) published a customer case study with Slovenia's ARAO evaluating disposal of TRIGA II spent nuclear fuel, noting integration into a proposed Krško deep borehole repository could raise lifecycle costs by less than roughly 0.5%.
Amentum (AMTM), the input ticker, is mentioned only as a collaborator on Deep Isolation's January 2026 full-scale Commercialization Pilot in Cameron, Texas, alongside Halliburton, NAC International, and others.
The release is a marketing case study with no new financial results, contracts, or obligations affecting Amentum; materiality for AMTM holders is negligible.
• 25d ago AI analysis › Press Release
Amentum Opens Global Nuclear Headquarters in Oak Ridge, Tennessee
Amentum opened its Global Nuclear headquarters in Oak Ridge, Tennessee, a hub housing its Nuclear Center of Excellence with more than 150 subject-matter experts supporting international nuclear operations.
The company simultaneously launched the Amentum Nuclear Scholars Program, a five-year, $500,000 scholarship pipeline with Roane State Community College and the University of Tennessee, Knoxville, bringing total student support there above $1 million.
The move deepens Amentum's east Tennessee footprint, where it leads UCOR, the DOE's prime environmental management contractor for the Oak Ridge Reservation.
• 1mo ago AI analysis › Press Release
Deep Isolation Advances Nuclear Waste Disposal Demonstration With Issuance of Texas Drilling Permit
Deep Isolation Nuclear (OTCQB: DBHL) received a drilling permit from the Texas Railroad Commission for its full-scale, non-radioactive Commercialization Pilot near Cameron, Texas, allowing the project to move from design toward construction and field activities.
Amentum (NYSE: AMTM) is named among the project collaborators alongside Halliburton, NAC International, the Deep Borehole Demonstration Center, and Occlusion Nuclear Solutions, but the announcement is Deep Isolation's disclosure, not Amentum's.
For AMTM holders this is minor context on a partner project rather than a company-specific catalyst; any commercial impact on Amentum is indirect and unquantified.
• 1mo ago AI analysis › Press Release ⚠ 1
Amentum Joint Venture Secures Preferred Position for Major UK Nuclear Contract
Amentum's joint venture with Mitie Plc has been named preferred supplier for Sellafield Ltd's PACE framework, an asset care and asset creation program valued at up to $2.78 billion (£2.1 billion).
Lot 1 will be delivered by OneAxIoM, supported by Assystem and Mott MacDonald, with a nine-year initial term and an optional six-year extension covering engineering, decommissioning, and spent fuel management support.
Formal award remains subject to final contractual arrangements, so this is a preferred-position win rather than a booked contract; management framed it as a significant long-term growth opportunity at Sellafield.
• 1mo ago AI analysis › Press Release
Amentum Selected for Projects to Upgrade and Protect the UK Energy Grid
Amentum has been selected for strategic positions on two UK energy frameworks awarded by SSEN Transmission, serving as the exclusive provider of high-end cybersecurity engineering services to digitize and enhance the security of the national grid.
The three-year agreements build upon existing security architecture work performed for SSEN Transmission since 2022 and involve teams operating from Cardiff, Glasgow, London, and Warrington.
Management highlighted that the work supports the UK's energy transition goals by leveraging expertise in digital transformation, operational technology, and renewable energy integration.
• 2mo ago AI analysis › Press Release ● Major
Amentum Wins $974M Center Maintenance, Operations, and Engineering Contract at NASA Langley Research Center
Amentum has been awarded the Center Maintenance, Operations, and Engineering II (CMOE II) contract at NASA Langley Research Center, a deal valued at $974 million.
The contract encompasses support for advanced research systems including wind tunnels and laboratories, as well as preventive maintenance and central utilities operations.
This award extends Amentum's partnership with NASA to over six decades, reinforcing its role in maintaining the agency's critical infrastructure.
• 2mo ago AI analysis › Press Release
Amentum to Support Critical Infrastructure and Platforms Under New Engineering Services Framework
Amentum has joined a five-year Babcock International Group Engineering Services Framework to support nuclear, marine, land, aviation, and mission systems for the UK Armed Forces.
The agreement builds on decades of infrastructure support at key Royal dockyards, enabling streamlined procurement for critical UK defence and submarine programs.
Management highlighted the company's naval nuclear infrastructure experience as a key differentiator that positions Amentum as a one-stop shop for Babcock’s engineering requirements.
• 2mo ago AI analysis › Press Release
Amentum Joint Venture Selected for Australia Nuclear Submarine Shipyard Program
Amentum, in a joint venture with Laing O’Rourke, was selected by Australian Naval Infrastructure as the Capability Partner for the nuclear-powered submarine construction yard in South Australia.
The long-term contract under the AUKUS agreement covers program management, construction, and safety leadership at the Osborne Naval Shipyard.
This selection positions Amentum as a key contributor to Australia’s sovereign nuclear capability, leveraging over 60 years of nuclear submarine expertise.
• 2mo ago AI analysis › Press Release
National Security Executive Khalid Syed Joins Amentum
businesswire.com • 2mo ago Press Release ● Major ⚠ 3
Amentum Reports Third Quarter Fiscal Year 2026 Results
Amentum reported Q3 fiscal 2026 revenue of $3.49 billion, a 2% year-over-year decline, while net income surged to $66 million from $10 million in the prior year.
Profitability metrics showed strength with Adjusted EBITDA rising 6% to $290 million and Free Cash Flow increasing 35% to $135 million.
The company lowered its full-year revenue outlook but raised guidance for Adjusted EBITDA and Adjusted EPS, supported by an 8% increase in total backlog to $48.2 billion and recent contract wins in nuclear and defense.
• 2mo ago AI analysis › Press Release
Westinghouse and Amentum Partner to Expand Delivery Capacity for APX Fleet Deployment
Amentum entered a series of agreements with Westinghouse Electric Company to support the fleet-scale deployment of the AP1000 reactor and advance the development of the AP300 small modular reactor (SMR).
The partnership aims to accelerate licensing for the AP300 SMR with the U.S. Nuclear Regulatory Commission and enhance engineering execution capabilities for 1-gigawatt reactors.
Amentum will leverage its full-spectrum nuclear lifecycle expertise to meet expanding global demand for firm baseload power, particularly for AI and other energy-critical industries.
• 3mo ago AI analysis › Press Release ● Major ⚠ 1
Amentum Selected for the Department of Energy AI Data Center and Energy Generation Project
Amentum has been selected by the U.S. Department of Energy's National Nuclear Security Administration to enter negotiations for a phased lease to develop a major integrated AI and energy infrastructure project at the Savannah River Site.
The proposed project would establish a 1-gigawatt artificial intelligence data center supported by approximately 2 gigawatts of on-site energy generation, initially powered by natural gas and bridging to advanced nuclear energy.
CEO John Heller stated the company is uniquely positioned at the intersection of AI, energy resilience, and national security to deliver this infrastructure.
• 3mo ago AI analysis › Press Release
Amentum to Host Third Quarter Fiscal Year 2026 Earnings Conference Call on August 11, 2026
Amentum announced it will host its third quarter fiscal year 2026 earnings conference call on August 11, 2026, at 8:30 AM EDT.
The company plans to issue a press release with financial results for the quarter ended July 3, 2026, prior to the call.
A live webcast and replay will be accessible via the Investor Relations section of the company's website.
• 3mo ago AI analysis › Press Release
Nuclear Innovator Deep Isolation Begins Trading on the OTCQB Venture Market Under the Ticker Symbol “DBHL”
Deep Isolation, a partner of Amentum, announced that its common stock has been approved for listing on the OTCQB Venture Market under the ticker symbol 'DBHL'.
The release highlights ongoing collaboration with Amentum on a full-scale deep borehole demonstration project in Cameron, Texas, alongside other industry partners like Halliburton and Westinghouse.
Deep Isolation cited recent strategic milestones including an oversubscribed $33 million private offering and potential ARPA-E funding of up to $20 million to support the project.
• 3mo ago AI analysis › Press Release
Amentum Recognized as One of America’s Best Companies 2026 by TIME Magazine
Amentum was named to TIME Magazine’s America’s Best Companies 2026 list, an annual ranking that evaluates companies on employee satisfaction, financial strength, and sustainability transparency.
CEO John Heller attributed the recognition to the dedication of the company’s employees and its focus on operating with integrity and purpose.
The company is a global provider of engineering and technology solutions with approximately 50,000 employees operating in more than 70 countries.
• 4mo ago AI analysis › Press Release
Amentum Wins NASA’S COSMOS Contract to Advance Spaceflight Mission Operations
Amentum has been awarded NASA's Consolidated Spaceflight Mission Operations and Systems (COSMOS) contract through its ASCEND joint venture with Aerodyne Industries.
The contract encompasses critical mission operations, systems, and training solutions for NASA's Flight Operations Directorate at the Johnson Space Center in Houston.
This work will support key programs including Orion, the Space Launch System, and the Artemis program, reinforcing Amentum's position as a trusted partner in the U.S. space enterprise.
• 4mo ago AI analysis › Press Release
Amentum Secures $77M Contract to Modernize Defense Supply Chain Logistics in the Indo-Pacific Region with AI Tools
Amentum secured a 60-month, $77M firm-fixed price contract from the General Services Administration to modernize supply chain logistics for U.S. forces in Japan.
The company will deploy AI-powered solutions to support the Pentagon and U.S. Indo-Pacific Command, focusing on demand planning and catalog management in strategic environments.
Dr. Karl Spinnenweber, president of Mission Solutions, highlighted the alignment with the firm's global sustainment capabilities and operational reach.
• 4mo ago AI analysis › Press Release
Deep Isolation Nuclear Appoints Drilling Veteran Jon Tedrick to Lead World’s First Full-scale Deep Borehole Disposal Demonstration
Deep Isolation announced the relocation of Technology Demonstration Lead Jon Tedrick to Texas to support the execution of the deep borehole disposal demonstration project at the DBDC near Cameron, Texas.
The project, which involves Amentum (AMTM) and Halliburton (HAL) as collaborators, was recently selected for the U.S. Department of Energy's ARPA-E SCALEUP Ready program, providing up to $20 million in funding to advance the technology.
The demonstration aims to validate key components of nuclear waste disposal using standard oil and gas drilling practices and full-scale canister emplacement using Deep Isolation's Universal Canister System.
• 4mo ago AI analysis › Press Release
Amentum Debuts on the Fortune 500 List
Amentum (NYSE: AMTM) has been named to the Fortune 500 list for the first time, ranking at #313.
The ranking is based on total revenue for the previous fiscal year, reflecting the company's scale as a global advanced engineering and technology firm.
CEO John Heller and CFO Travis Johnson highlighted the milestone as a testament to the dedication of their 50,000 employees across more than 70 nations.
• 5mo ago AI analysis › Press Release
Deep Isolation Reaches Over 100 Issued Patents, Strengthening Global Leadership in Nuclear Waste Disposal Innovation
Deep Isolation, a subsidiary of Amentum (AMTM), announced it has surpassed 100 issued patents worldwide, strengthening its intellectual property position in nuclear waste disposal.
The portfolio covers the full disposal lifecycle, including repository architecture, site characterization, and the Universal Canister System (UCS) for packaging and transport.
This milestone supports the company’s full-scale commercial pilot at Cameron, Texas, launched in January 2026 in collaboration with Halliburton, Amentum, and other partners.
• 5mo ago AI analysis › Press Release
Amentum Names Dr. Sam Nazari Chief AI Architect
businesswire.com • 5mo ago Press Release ● Major
Amentum Reports Second Quarter Fiscal Year 2026 Results and Reaffirms Full Year Guidance
Amentum reported Q2 revenue of $3.5 billion, consistent year-over-year, with strong performance in new contract awards in critical digital infrastructure and space systems.
Net income increased to $54 million, up from $4 million in the prior year, driven by higher operating income and lower interest expense.
The company reaffirmed its fiscal year 2026 guidance, projecting revenue of $13.95 billion to $14.3 billion, adjusted EBITDA of $1.1 billion to $1.14 billion, and adjusted diluted EPS of $2.25 to $2.45.
Amentum also completed a $1.4 billion Term Loan A, using the proceeds to repay and reprice its existing Term Loan B, enhancing its capital structure and financial flexibility.
• 5mo ago AI analysis › Press Release ● Major
Amentum to Host Second Quarter Fiscal Year 2026 Earnings Conference Call on May 12, 2026
businesswire.com • 6mo ago Press Release
Amentum Appoints Joseph DeNardi as Senior Vice President and Head of Investor Relations
Amentum appointed Joseph DeNardi as Senior Vice President and Head of Investor Relations, bringing in a veteran of the government services and defense sectors.
DeNardi joins from Science Applications International (SAIC), where he led corporate finance and investor relations, and previously covered the Aerospace & Defense industry as an equity research analyst at Stifel Financial.
He succeeds Nathan Rutledge, who left the company to pursue other opportunities after leading investor relations through Amentum's public listing.
• 6mo ago AI analysis › Press Release
Amentum Powers Ground Systems Operations for NASA's Historic Artemis II Mission
businesswire.com • 6mo ago Press Release
Amentum Secures $425 Million Contract to Support California's Aerial Firefighting Operations
businesswire.com • 7mo ago Press Release
Amentum-Led Joint Venture Secures $406 Million Contract as Owner's Engineer for UK's First Small Modular Reactors
businesswire.com • 7mo ago Press Release
Amentum Expands Operations in Hawaii, Enhances Support for USINDOPACOM, and Launches the Center for Contested Logistics
businesswire.com • 7mo ago