Amentum Holdings, Inc. (NYSE: AMTM)

Amentum Holdings, Inc. is a global advanced engineering and technology solutions provider to a broad base of U. S. and allied government agencies, and customers in international and commercial markets. The company delivers solutions across energy and environmental, intelligence, space, defense, civilian and commercial end markets. Its workforce of approximately 50,000 employees operates in over seventy countries. Amentum draws on more than one hundred years of expertise from predecessor firms such as EG&G, Morrison Knudsen, Westinghouse Government Services, URS, Lear Siegler Services, DynCorp, Pacific Architects and Engineers and the former Jacobs Critical Mission Solutions business to support full mission lifecycle programs for its clients.

Amentum generates revenue primarily through contracts with U. S. government agencies, which accounted for about 81% of total revenue for the year ended October 3, 2025. The firm also serves international and commercial customers, earning income from advanced digital and data driven solutions, environmental remediation, nuclear power, platform engineering, sustainment and supply chain management services. These offerings are delivered under cost plus fee, fixed price and time and materials contract structures. A backlog of $47.1 billion as of October 3, 2025 provides visibility into future revenue and supports the company’s ability to pursue large scale contracts while maintaining a steady stream of earnings.

The company operates through the following segments: Digital Solutions (DS) and Global Engineering Solutions (GES).

• Digital Solutions: This segment provides advanced digital and data driven solutions including intelligence analytics, space system development, cybersecurity, next generation information technology and software engineering services to federal government and commercial clients. It supports missions such as threat recognition, surveillance, satellite operations and digital transformation initiatives.

• Global Engineering Solutions: This segment delivers large scale environmental remediation, nuclear power solutions, platform engineering, sustainment and supply chain management services across all seven continents for U. S. government and allied nation clients. Its work includes site cleanup, waste management, facility construction and lifecycle support for defense and energy projects.

Amentum holds a strong position in the government services industry due to its scale, diversified contract base and long standing relationships with U. S. and allied agencies. Its competitive advantages include the ability to win large, complex programs, deep expertise in areas such as C5ISR, R&D&T&E, energy, space and digital modernization, and a global footprint that spans over seventy countries. The company faces competition from firms like Booz Allen Hamilton, CACI International, KBR, Leidos, ManTech, Parsons, Peraton, SAIC and V2X, as well as larger defense contractors such as Boeing, BAE Systems, General Dynamics, L3Harris, Lockheed Martin, Northrop Grumman and RTX. In the U. K. defense market it contends with Babcock International, BAE Systems, Mott MacDonald, Serco and Mace, while its environmental business rivals AtkinsRealis, Bechtel, BWX Technologies, Honeywell, Huntington Ingalls Industries, Fluor and Westinghouse.

Amentum serves a diverse customer base that includes the U. S. Department of Energy, the Intelligence Community comprising the National Intelligence Program and the Military Intelligence Program, the Department of War, the National Aeronautics and Space Administration and the Department of Homeland Security. Internationally the company works with the U. K. Ministry of Defence, the U. K. Nuclear Decommissioning Authority and the Australian Department of Defence. In addition, Amentum provides services to commercial clients in sectors such as aerospace, space, automotive and telecommunications.