What changed in this filing

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Item 1. Business

2025-11-25 compared with 2024-12-17 · 84 added, 93 removed, 220 unchanged (45% of the section changed)

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(herein referred to as “we”, “our”, “us”, “the Company” and “Amentum”), a Delaware corporation, is a global advanced engineering and technology solutions provider to a broad base of U.S.

and allied government agencies and significant commercial enterprises.

and allied government agencies, and customers in international and commercial markets.

On September 27, 2024, Amentum was formed through the completion of a merger between the legacy Amentum business and a spin-off of the Jacobs Solutions Inc.

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The Transaction brought together two premier government services companies with complementary capabilities and a deep understanding of our customers’ missions and priorities developed over more than 100 years as trusted engineering and technical experts.

We operate our business activities and report financial results as two reportable segments:

Digital Solutions (“DS”) and Global Engineering Solutions (“GES”).

Our history as a trusted partner to the U.S.

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We believe our scale and breadth of capabilities position us well in the marketplace as our customers’ requirements increasingly necessitate a full lifecycle partner equipped with next-generation engineering solutions to solve their most complex challenges.

Our workforce of more than 53,000 continues to be rooted in a strong purpose-driven culture.

Our workforce of approximately 50,000 continues to be rooted in a strong purpose-driven culture.

Our mission-oriented and highly skilled personnel enable us to serve a diverse range of requirements for our customers.

In the U.S., these customers include the Department of Energy (“DOE”), the Intelligence Community (consisting of the National Intelligence Program (“NIP”) and the Military Intelligence Program (“MIP”)), the Department of Defense (“DOD”), the National Aeronautics and Space Administration (“NASA”), and the Department of Homeland Security (“DHS”) as well as other government and certain commercial customers.

We are also well-positioned internationally with employees across approximately 80 countries, supporting international customers and contracts in regions with growing mission demand, such as Europe and the Indo-Pacific, and with key allied government agencies, including the U.K.

In the U.S., these customers include the Department of Energy (“DOE”), the Intelligence Community consisting of the National Intelligence Program (“NIP”) and the Military Intelligence Program (“MIP”), the Department of War (“DOW”), the National Aeronautics and Space Administration (“NASA”), and the Department of Homeland Security (“DHS”) as well as other government and certain commercial customers.

We are also well-positioned internationally with employees in over 70 countries, supporting international customers and contracts in regions with growing mission demand, such as Europe and the Indo-Pacific, and with key allied government agencies, including the U.K.

Ministry of Defence (“U.K.

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Nuclear Decommissioning Authority (“NDA”) and the Australian Department of Defence (“Australian DOD”).

We support these customers by providing solutions to pressing challenges, from energy transition and environmental solutions to cybersecurity and digital modernization.

We support these customers by providing solutions to pressing challenges, from energy transformation and environmental solutions to cybersecurity and digital modernization.

Our solutions—backed by a robust network of engineers, cleared employees and technical subject matter experts—continue to be critical to our customers’ priorities.

These priorities include addressing global environmental challenges and supporting energy transition, creating digital decision advantages, advancing Research, Development, Test, and Evaluation (“RDT&E”) initiatives, and enhancing space superiority.

Examples of our solutions addressing these priorities include development of new clean energy technologies for the DOE and international customers, threat recognition and analytics for the Intelligence Community, engineering advanced systems for the DOD, research and development solutions for the DHS, and science, engineering, and technology development for NASA.

Across our customer set, our solutions span all aspects of the government acquisition lifecycle, including design, development, engineering, integration, operations, and sustainment.

As a result of the completion of the Transaction, we have a compelling industry platform of scale with excellent revenue visibility supported by $45.0 billion of backlog as of September 27, 2024 and attractive growth opportunities.

These priorities include addressing global environmental challenges and supporting sustainable energy transformation, creating digital decision advantages, advancing Research, Development, Test, and Evaluation (“RDT&E”) initiatives, and enhancing space superiority.

Examples of our solutions addressing these priorities include design and development of new nuclear technologies for U.S.

and international customers, threat recognition and analytics for the Intelligence Community, engineering advanced systems for the DOW, research and development solutions for the DHS, and science, engineering, and technology development for NASA.

Across our customer set, our solutions span all aspects of the government lifecycle, including development, integration, and operations.

We have a compelling industry platform of scale with excellent revenue visibility supported by $47.1 billion of backlog as of October 3, 2025 and attractive growth opportunities.

Our scale is an asset that positions us as a turn-key solutions provider capable of pursuing our customers’ largest and most complex contracts.

The ability to pursue these contracts, while maintaining a large base of revenue in backlog, supports our agile business development engine.

The ability to pursue these contracts, while maintaining a large base of revenue in backlog, is supported by our agile business development engine.

We believe our scale, efficiency and diversity enables Amentum to generate substantial free cash flow while driving growth.

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Through strategic acquisitions and refined business models, Legacy Amentum expanded its expertise to deliver a comprehensive suite of solutions.

These include cutting-edge capabilities in intelligence analytics, counter-terrorism, supply chain management, aviation, business process optimization, and defense readiness.

On September 27, 2024, Amentum became a public company through the consummation of the spin-off of the Jacobs Critical Mission Solutions business and portions of the Jacobs Divergent Solutions business (together referred to as the “CMS Business”) and merger with Legacy Amentum in a tax-efficient Reverse Morris Trust transaction.

Prior to the spin-off, the CMS Business reorganized under a newly formed company named Amazon Holdco Inc.

(“CMS”) and distributed a $911 million cash dividend payment to Jacobs, who then distributed, prior to the merger, approximately 80.95% of the outstanding shares of CMS common stock to Jacobs’ shareholders on a pro rata basis.

These included cutting-edge capabilities in intelligence analytics, counter-terrorism, supply chain management, aviation, business process optimization, and defense readiness.

On September 27, 2024, Amentum became a public company through the consummation of the spin-off of the Jacobs Critical Mission Solutions business and portions of the Jacobs Divergent Solutions business (together referred to as “CMS”) and merger with Legacy Amentum in a tax-efficient Reverse Morris Trust transaction.

Prior to the spin-off, CMS reorganized under a newly formed company named Amazon Holdco Inc.

(“CMS”) and distributed a $911 million cash dividend payment to Jacobs,

who then distributed, prior to the merger, approximately 80.95% of the outstanding shares of CMS common stock to Jacobs’ shareholders on a pro rata basis.

In connection with the completion of the merger, CMS was renamed Amentum Holdings, Inc.

On September 30, 2024, Amentum began trading on the New York Stock Exchange under the ticker symbol “AMTM.”

Amentum’s heritage stretches back to companies founded at the dawn of the twentieth century.

This legacy encompasses many notable achievements, including design and development of the Hoover Dam, demilitarization of the United States’ chemical weapons stockpile, and environmental management support following the Manhattan Project during World War II.

Some of the prominent companies that are part of Amentum’s history include EG&G, Morrison-Knudsen, Westinghouse Government Services, URS, Lear Siegler Services, DynCorp International LLC (“DynCorp”), and Pacific Architects and Engineers (“PAE”).

Since the 1950s, the CMS Business and its predecessor companies served vital roles in innovative projects including the design, development, operations, and maintenance of first-of-their kind aerodynamic test facilities for the United States Air Force (“USAF”);

supporting the development of NASA test facilities needed for the Apollo Program;

designing the launch complex for the Space Shuttle;

and supporting the next generation of human space exploration as a prime contractor for NASA’s Artemis mission.

CMS has also supported the clean energy transition, playing a key role in the development of each of the existing nuclear power stations in the U.K.

Amentum’s heritage stretches back to companies founded at the dawn of the twentieth century including EG&G, Morrison-Knudsen, Westinghouse Government Services, URS, Lear Siegler Services, DynCorp International LLC (“DynCorp”), Pacific Architects and Engineers (“PAE”) and CMS.

This legacy encompasses many notable achievements, including the design and development of the Hoover Dam, demilitarization of the United States’ chemical weapons stockpile, and environmental management support following the Manhattan Project during World War II.

Additionally, our predecessor companies served vital roles in innovative projects including the design, development, operations, and maintenance of first-of-their kind aerodynamic test facilities for the United States Air Force (“USAF”), supporting the development of NASA test facilities needed for the Apollo Program, designing the launch complex for the Space Shuttle, and supporting the next generation of human space exploration as a prime contractor for NASA’s Artemis mission.

We have also supported the clean energy transformation, playing a key role in the development of each of the existing nuclear power stations in the U.K.

and in the remediation of complex nuclear sites across the U.S.

The composition of our business today reflects the evolving needs of the U.S.

and other allied governments for a contractor that can provide comprehensive solutions to address their most significant and complex challenges.

and allied governments for a contractor that can provide comprehensive solutions to address their most significant and complex challenges.

Our Competitive Advantage

Our broad-based contract positions across a diverse range of customers and government acquisition lifecycles allow Amentum to position the portfolio in areas of government funding tailwinds while mitigating risk during periods of transition.

This stable and diversified base, when combined with our scale, serves as a strong growth platform.

Our global reach is extensive with an employee presence in approximately 80 countries and 27% of employees positioned internationally.

Our broad-based contract positions across a diverse range of customers and missions allow Amentum to position the portfolio in areas of government funding tailwinds while mitigating risk during periods of transition.

This stable and diversified base, when combined with our scale, serves as a strong foundation for continued growth.

Our global reach is extensive with an employee presence in over 70 countries and 25% of employees positioned internationally.

Our international customers benefit from our expansive technical capabilities, proven expertise and longstanding customer relationships.

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Solutions in these areas include our environmental remediation and engineering capabilities supporting the DOE and the U.K.

MOD, which are further expanding in support of customers pursuing emerging, clean energy technologies;

NDA, which are further expanding in support of customers pursuing emerging, new nuclear energy technologies;

our digital modernization and cyber capabilities, which can be customized to current customers under existing programs;

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and our knowledge of emerging 5G technologies, which are primarily deployed for commercial customers today and may enhance our ability to improve government telecommunications systems.

Amentum has the ability to serve as a prime contractor across a diverse array of customers, capabilities and missions, especially as our customers increasingly migrate to a solutions-oriented procurement model.

Amentum serves as a prime contractor across a diverse array of customers, capabilities and missions, especially as our customers increasingly migrate to a solutions-oriented procurement model.

We believe our customers prefer the engineering and technological expertise of our highly skilled workforce that underpins these solutions.

We have pride in our people and our culture—we foster an entrepreneurial approach to innovation and respond with agility to deliver exceptional performance.

We will continue to drive success with our highly competent and diverse workforce.

Our commitment to our people is demonstrated by our “Mission First, People Always” approach, which supports our future operations for decades to come.

We take pride in our people and our culture—we foster an entrepreneurial approach to innovation and respond with agility to deliver exceptional performance.

We will continue to drive success with our highly competent workforce.

Our commitment to our people is reflected in our tagline “Advancing the Future Together”, which will guide our operations for decades to come.

Our Markets and Trends

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federal government, as well as select international customers and commercial customers.

We also provide our services to other prime

contractors who have contracts with the U.S.

We also provide our services to other prime contractors who have contracts with the U.S.

federal government and other international customers where our capabilities deliver comprehensive solutions.

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Approximately 81% of the Company’s revenues were derived through direct contracts with agencies of the U.S.

Government for the year ended September 27, 2024.

Government for the year ended October 3, 2025.

Our global markets represent a substantial opportunity, marked by longstanding leadership in the U.K.

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We have extensive experience with AUKUS, including:

specialized research and development (“R&D”) activities with the DOD’s Underwater Launch Test Facility;

specialized research and

development (“R&D”) activities with the DOW’s Underwater Launch Test Facility;

research and technical services with the U.K.’s naval nuclear propulsion program;

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and nearly 30 years in Australia.

We believe our core technical expertise and technology solutions will also enable us to continue serving commercial customers in the areas of commercial space, cybersecurity, electric vehicle transition, clean energy and telecommunications.

Shift Toward Modernization

We believe that Amentum has an advantage in creating digital decision advantages, advancing RDT&E initiatives, delivering space superiority, addressing global environmental challenges, and supporting energy transition due to our scale and capabilities across key government modernization priorities.

Due to our scale and capabilities across key government modernization priorities, we believe that Amentum has an advantage in creating digital decision advantages, advancing RDT&E initiatives, delivering space superiority, addressing global environmental challenges, and supporting nuclear power expansion globally.

The breadth of our solutions enables us to capitalize on these modernization priorities from early-stage development through sustainment.

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Our technology capabilities, agility, track record of renewal rates and new program wins make Amentum a logical partner for customers in these key growth markets, including cybersecurity;

space-based Intelligence, Surveillance, and Reconnaissance (“ISR”);

environmental remediation and energy transition;

space-based missile defense;

environmental remediation and nuclear power;

and deployment of 5G technologies.

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We provide solutions to various commercial markets including commercial aerospace, space, automotive, and telecommunications.

Our agility and technical expertise have given us ample opportunity to apply solutions from our government customers to commercial customers, including leveraging digital modernization for commercial space to improve a manufacturer’s operations and using our ISR capabilities to help streamline autonomous driving solutions provided by the automotive industry.

We expect to leverage additional cross selling opportunities in support of our newly combined customer base.

Our agility and technical expertise give us ample opportunity to apply solutions from our government customers to commercial customers, including leveraging digital modernization for commercial space to improve a manufacturer’s operations and using our capabilities to streamline autonomous driving solutions for the automotive industry.

Business Strategy

We are active in market sectors that are large and fragmented, providing significant opportunities for continued business growth.

We leverage our history of executing complex engineering and technology solutions for our largest customers to win new contracts with a business strategy that includes the following elements:

• Win and successfully execute the largest, most complex programs for the government across the energy and environmental, intelligence, space, defense, civilian and commercial end-markets.

We leverage our history of executing complex engineering and technology solutions for our largest customers to win new contracts with a business strategy that includes the following elements for both reportable segments:

• Win and successfully execute the largest, most complex programs for the government across the energy and environmental, intelligence, space, defense, and civilian end-markets.

The scale and diversity of our solutions, capabilities, geographies, workforce and contract vehicles are central to our strategy and position us for outsized growth with our customers.

The contracts we hold allow us to strategically partner with our customers on innovative engineering and technology solutions creating a competitive advantage for us and provides the opportunity for on-contract growth.

The contracts we hold allow us to strategically partner with our customers on innovative engineering and technology solutions creating a competitive advantage for us, providing the opportunity for on-contract growth.

We believe the U.S.

federal government is increasingly looking to large, diversified providers

for comprehensive solutions, for which Amentum offers a breadth and depth of proven expertise that is unique in the government services industry.

federal government is increasingly looking to large, diversified providers for comprehensive solutions, for which Amentum offers a breadth and depth of proven expertise that is unique in the government services industry.

• Increase our penetration with existing, well-funded customers , where our current long-term contracts, backlog, and relationships provide a stable base for on-contract growth and expanded new opportunities.

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• Expand into high-growth and adjacent markets by leveraging technologies and innovation backed by our highly skilled workforce, mission expertise, and ecosystem of trusted partners.

Some of these high growth areas include hypersonics, autonomous systems, sustainable energy, and artificial intelligence/machine learning.

Some of these high growth areas include hypersonics, autonomous systems, advanced energy solutions, and artificial intelligence/machine learning.

We believe our extensive RDT&E capabilities and our customers’ increasing focus on efficiency will enable us to compete effectively.

Our ability to replicate modernization efforts across new end markets and various stages of the government acquisition lifecycle will expand our addressable market and enable growth in excess of our customers’ underlying budgets.

Our ability to replicate modernization efforts across new end markets and various stages of the government lifecycle will expand our addressable market and enable growth in excess of our customers’ underlying budgets.

• Utilize core competencies to drive revenue synergies generated from our enhanced capabilities, relationships, and past performance credentials.

These core competencies position us to bid and win opportunities, and our increased scale and competitive cost structure drive operational efficiencies, without compromising the quality of our solutions.

Examples of areas where we combine past performance qualifications with longstanding customer relationships include intelligence analytics, C5ISR engineering & integration, and digital modernization.

Examples of areas where we combine past performance qualifications with longstanding customer relationships

include intelligence analytics, C5ISR engineering & integration, and digital modernization.

Our comprehensive offerings support the U.S.

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Key Capabilities

The combination of the Legacy Amentum and the CMS Business brings together a complementary suite of capabilities that we can leverage to capture large, complex contracts for a wide range of customers.

Environmental Solutions and Energy Transition

We leverage our complementary suite of capabilities to capture large, complex contracts for customers in the U.S.

government, international and commercial markets.

Environmental Solutions and Energy Transformation

Amentum has a long history of providing innovative solutions to energy and environmental customers.

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Our capabilities include environmental remediation, site revitalization, nuclear non-proliferation and per- and polyfluoroalkyl substances (“PFAS”) solutions.

Our core services within this capability are focused on environmental remediation for the DOE across various sites, including at Savannah River, Hanford, Oak Ridge, Portsmouth and the Idaho Cleanup Project.

We have extensive experience in research and lab operations, fusion energy and other advanced clean energy technologies.

Our core services within this capability are focused on environmental remediation for the UK NDA and DOE across various sites, including at Sellafield, Savannah River, Hanford, Oak Ridge, Portsmouth and the Idaho Cleanup Project.

We have extensive experience in research and lab operations, fusion energy and other advanced energy technologies.

In Europe, we continue to provide high-value consulting and proprietary technologies through the entire government acquisition lifecycle, including design, operations management, decommissioning and regeneration solutions, as well as serving multiple government IDIQs remediating the effects of radioactive material from legacy sites and programs.

Amentum has also been involved in the development of technology that will enable the energy transition and decarbonization, as we are currently working with eight different Original Equipment Manufacturers (“OEMs”) to develop Advanced Modular Reactors (“AMRs”) and Small Modular Reactors (“SMRs”).

Amentum has also been involved in the development of technology that will enable the global nuclear resurgence, as we are currently working with several different Original Equipment Manufacturers (“OEMs”) to develop Advanced Modular Reactors (“AMRs”) and Small Modular Reactors (“SMRs”).

Space Solutions

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As a leading services provider for NASA, we provide solutions across the full spectrum of design, base, mission and launch operations.

Our space solutions and engineering capabilities include ISR integration, radio frequency signal processing, ground systems development, launch and landing operations, satellite payloads and sensor engineering.

Our space solutions and engineering capabilities include ground systems development, launch and landing operations, satellite payloads and sensor engineering.

These are demonstrated through various contracts including NASA’s Consolidated Operations, Management, Engineering and Test (“COMET”) contract and NASA’s Johnson Space Center Engineering, Technology, and Science (“JETS”) II contract.

Our core capabilities of launch support, digital modernization, on-orbit operations, program management and systems engineering are directly aligned to the highest growth budget priorities at NASA, the MDA and the USSF.

Our core capabilities of launch support, digital modernization, on-orbit operations, program management and systems engineering are directly aligned to the high growth budget priorities at NASA, the MDA and the USSF.

In the longer term, we see additional opportunities in providing similar services and capabilities to a broader customer base, including other government agencies and commercial entities accessing space.

Intelligence, Cyber and Digital Engineering

We are at the forefront of wide-ranging cyber, digital services and modern software engineering providing enhanced data ingestion, collection, security and storage solutions for government agency customers spanning the Intelligence Community, the DOD and federal civilian markets.

Our intelligence capabilities support the Intelligence Community in addition to the greater defense and space community with demonstrated ability to provide technology-based solutions including intelligence analytics, intelligence collection training, C5ISR, threat recognition and analytics, in addition to intelligence operations management.

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Our Model-Based System Engineering (“MBSE”) solutions span the lifecycle from a document-centric approach to a model-centric approach, using formalized digital models and our proven digital engineering playbook.

These solutions are aligned with key DOD focus areas including the National Defense strategy:

These solutions are aligned with key DOW focus areas including the National Defense strategy:

a digital engineering strategy focused on modernizing defense systems and speed of delivery to be able to fight and win the wars of the future.

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We provide comprehensive, technology-based supply chain management and sustainment solutions that are critical to helping our customers drive long-term cost reductions.

In addition, our leading-edge remote expert technology and our global positioning within all DOD geographical areas of responsibility (“AORs”) afford us the ability to provide timely support to the urgent needs of our U.S.

In addition, our leading-edge remote expert technology and our global positioning within all DOW geographical areas of responsibility (“AORs”) afford us the ability to provide timely support to the urgent needs of our U.S.

federal government customers and allied partners around the world.

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These diverse capabilities include rapid prototyping, integrated sustainment and advanced engineering solutions.

We continue to be a key provider of design, delivery and operations of advanced mission systems engineering and test infrastructure across the DOD.

We continue to be a key provider of design, delivery and operations of advanced mission systems engineering and test infrastructure across the DOW.

Our strength in these capabilities is evident through alignment with key government growth trends including joint domain operations (through our multi-domain live virtual and constructive (“LVC”) solutions) and emerging regions.

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We have been awarded contracts across a diverse group of customers across the end markets we serve.

Our contracts represent approximately $45.0 billion worth of backlog as of September 27, 2024 providing expected stability to our business.

Our contracts represent approximately $47.1 billion worth of backlog as of October 3, 2025 providing expected stability to our business.

We contract with our customers generally under one of three types of price structures:

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On time-and-materials contracts, we assume the risk of providing appropriately qualified staff to perform these contracts at the hourly rates set forth in the contracts over their period of performance.

Our historical contract mix by type, as a percentage of revenue, is indicated in the table below.

As a result of the merger with CMS, the future contract mix by type, as a percentage of revenue, may be different.

Our contract mix by type, as a percentage of each reportable segment and total Amentum revenues, is indicated in the table below.

As a result of the merger with CMS, the contract mix by type, as a percentage of revenues, may not be directly comparable.

For the years ended

September 27, 2024 September 29, 2023 September 30, 2022

October 3, 2025 September 27, 2024 September 29, 2023

DS GES Total DS GES Total DS GES Total

Cost-plus-fee 64 % 61 % 63 % 49 % 66 % 62 % 46 % 68 % 63 %

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Time-and-materials 10 % 15 % 13 % 18 % 9 % 11 % 19 % 8 % 11 %

Total 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 % 100 %

We note that substantially all of our contracts, including our U.S.

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defense market, our competitors include Babcock International Group plc, BAE Systems plc, Mott MacDonald Group Limited, Serco Group plc and Mace Group.

Competitors for our global environmental business include Atkins Canada, Bechtel Global Corporation, BWX Technologies Inc., Honeywell International Inc., Huntington Ingalls Industries, Inc., Fluor Corporation and Westinghouse Electric.

Competitors for our global environmental business include AtkinsRealis, Bechtel Global Corporation, BWX Technologies Inc., Honeywell International Inc., Huntington Ingalls Industries, Inc., Fluor Corporation and Westinghouse Electric.

We also compete against small businesses that cater to specific customers, capabilities and geographies.

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Our people are the core of our success.

With more than 53,000 employees across approximately 80 countries, our human capital strategy is focused on attracting, developing, and retaining top talent aligned with our values and client needs.

comprehensive onboarding, continuous learning, and performance management systems to ensure every employee thrives.

With approximately 50,000 employees over 70 countries, our human capital strategy is focused on attracting, developing, and retaining top talent aligned with our values and client needs.

We provide comprehensive onboarding, continuous learning, and performance management systems to ensure every employee thrives.

By fostering a culture of innovation and upskilling, we maintain a workforce that is agile, engaged, and equipped to drive Amentum’s mission forward.

Culture and Values

Amentum’s culture is built on innovation, excellence, courage, inclusion, collaboration, safety, and well-being.

Amentum’s culture is built on innovation, excellence, courage, collaboration, safety, and well-being.

These values guide our decision-making and shape interactions across the company.

We integrate these principles into leadership development, ethical decision-making, and diversity initiatives.

We integrate these principles into leadership development, ethical decision-making, and people-first initiatives.

Through leadership programs and employee engagement activities, we aim to empower employees to innovate and contribute to Amentum’s collective success.

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Amentum envisions a safer, smarter, cleaner world and that vision underpins our fierce commitment to environmental, health, and safety (“EHS”) excellence.

Protecting our people, clients, and communities we serve and driving sustainable business practices is not just the right thing to do, it is essential to our success.

Protecting our people, clients, and the communities we serve and driving sustainable business practices is not just the right thing to do, it is essential to our success.

We know that “success starts with safety” because we have observed the correlation between excellence in safety and both improved financial performance and customer satisfaction.

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As a result, we consistently meet our commitments on time and on budget, while avoiding unforeseen and undesirable outcomes.

Diversity, Equity, Inclusion, and Belonging (“DEIB”)

Our commitment to diversity, equity, inclusion, and belonging is a heartfelt promise.

We embrace the power of inclusion and collaboration, knowing that when every individual feels they truly belong, we unlock our highest potential.

We know a diverse workforce brings a wealth of perspectives, ideas, and experiences which drive innovation and enhance our ability to serve our clients globally even better than before.

Our DEIB strategy is comprehensive and action-oriented, focusing on three key areas:

recruiting and retaining diverse talent, fostering an inclusive workplace culture, and ensuring equitable opportunities for all employees.

Employee Networks

Amentum Connect Networks are a critical piece of our commitment to fostering an inclusive and supportive workplace.

These groups are employee-led, leadership-supported, and focus on various aspects of diversity, including race, ethnicity, gender, sexual orientation, age/generation, disability, and veteran status.

Our networks provide a valuable forum for employees to engage in dialogue, support one another, and contribute meaningfully to our strategic initiatives.

These groups organize a wide range of activities, including mentorship opportunities, leadership training, cultural events, and community outreach initiatives.

Our networks also play a crucial role in shaping company policies and practices, ensuring the voices of diverse employees are heard and considered in decision-making.

Talent Acquisition

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Through strategic partnerships with leading educational institutions, professional organizations, community groups, and military-focused programs, we’ve built a robust talent pipeline that reflects the diversity of the markets we serve and the unique needs of our clients.

Our recruitment process is rigorous and inclusive, leveraging advanced analytics and AI-driven tools alongside best-in-class practices to identify top talent.

We prioritize DEIB in our hiring practices, with a focus on increasing representation in leadership and critical technical roles.

Our recruitment process is rigorous, leveraging advanced analytics and AI-driven tools alongside best-in-class practices to identify top talent.

We believe that attracting and retaining the best talent is critical to our success, and we remain committed to providing a workplace where all employees can continuously grow and contribute their best.

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We encourage employees to explore different roles within the company and to take advantage of opportunities for lateral moves, promotions, and international assignments.

Our internal career platform is designed to facilitate career mobility, providing employees with visibility into available opportunities

and the resources they need to pursue them.

Our internal career platform is designed to facilitate career mobility, providing employees with visibility into available opportunities and the resources they need to pursue them.

We are committed to supporting the growth and development of our employees, and we believe that by investing in their success, we are investing in the future of Amentum.

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Our total rewards strategy includes competitive compensation, performance-based incentives, and a wide range of benefits which support the health, well-being, and financial security of our employees.

Recently, we have enhanced our benefits offering to include additional wellness initiatives, mental health support, and financial planning services.

Our benefits package also includes a variety of health insurance options, robust retirement savings plans, generous paid time off, and flexible work arrangements.

Additionally, we offer a variety of wellness programs, including fitness challenges, health screenings, helpful mental health resources, and an employee assistance program.

Our benefits package includes a variety of health insurance options, robust retirement savings plans, generous paid time off, and flexible work arrangements.

Additionally, we offer mental health support, financial services planning, and a variety of wellness programs, including fitness challenges, health screenings and an employee assistance program.

We believe by offering a comprehensive and competitive total rewards package, we can attract and retain the best talent, enhance employee engagement, and support the overall well-being of our workforce.

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Business Segments and Major Customers

We conduct our business activities and report financial results as one business segment.

The presentation of financial results as one reportable segment is consistent with the way the Company operates its business and the manner in which our chief operating decision maker (“CODM”), currently our Chief Executive Officer, manages the operations of the Company for purposes of allocating resources and assessing performance.

We operate our business activities and report financial results as two reportable segments:

Digital Solutions (“DS”) and Global Engineering Solutions (“GES”).

The Digital Solutions segment provides advanced digital and data-driven solutions including intelligence analytics, space system development, cybersecurity, and next generation IT across the federal government and commercial clients.

The Global Engineering Solutions segment provides large-scale environmental remediation, nuclear power solutions, platform engineering, sustainment and supply chain management across all seven continents for the U.S.

government and allied nations.

The presentation of financial results as two reportable segments is consistent with the way the Company operates its business and the manner in which our chief operating decision maker (“CODM”), currently our Chief Executive Officer, manages the operations of the Company for purposes of allocating resources and assessing performance.

Environmental Matters

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These regulations and risks are described in more detail under “Risk Factors.”

Amentum is committed to being a good steward of the environment through assessing, mitigating and reducing the impact we have on climate change and the physical environment in which we operate.

Amentum is committed to being a good steward of the environment.

Actions Amentum is taking to reduce the environmental impact of its activities include increasing the number of electric vehicles in our fleet, improving the energy efficiency of our buildings and implementing a centralized fleet program that will optimize the management of owned and leased vehicles to reduce greenhouse gas (“GHG”) emissions.

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and the mandatory disclosure of “credible evidence” of criminal law violations or receipt of significant overpayments.

Failure to ensure regulatory compliance may lead to civil or criminal penalties, termination of its government contracts, and/or suspension or debarment from contracting with customers.

Failure to ensure regulatory compliance may lead to civil or criminal penalties, termination of our government contracts, and/or suspension or debarment from contracting with government customers.

Contracts with the U.S.

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Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.

What changed 10-K

Item 1. Business