Amentum Holdings, Inc.

Overview

Amentum Holdings, Inc. is a global engineering and technology services company supporting government and commercial customers in areas including science, security and sustainability. Its Digital Solutions segment provides services such as intelligence analytics, space systems, cybersecurity and IT; Global Engineering Solutions delivers environmental remediation, nuclear-power solutions, engineering, sustainment and supply-chain services. The company’s stated mission is to bring advanced engineering and technology solutions to significant challenges in science, security and sustainability.[1][2]

Amentum reports approximately 50,000 employees operating in more than 70 countries and across all seven continents.[3] For scale, it reported $10.2 billion in revenue for the first nine months of fiscal 2026.[4] The current company was formed in 2024 through a merger involving Jacobs’ Critical Mission Solutions business and portions of its Divergent Solutions business with Amentum Parent Holdings LLC.[5] [1]+6

Products & services

Amentum’s offerings are primarily services and engineered solutions rather than named commercial product lines. Its Digital Solutions segment provides intelligence analytics, space-system development, cybersecurity and next-generation IT. Capabilities described by the company include AI/ML-enabled data analysis, cloud migration, DevSecOps, data management and software engineering, as well as space-system work spanning design, testing, launch, mission operations and asset management.[1]+3

Global Engineering Solutions provides environmental remediation, nuclear-power solutions, platform engineering, sustainment and supply-chain management. Its nuclear and environmental capabilities include engineering and lifecycle support, operations and maintenance, decommissioning, remediation of contaminated land and water, and remote handling and robotics. Other offerings include C5ISR systems engineering and sustainment—from design and integration through testing, fielding and lifecycle support—as well as global logistics, supply-chain management, and research, development, test and evaluation.[1]+5

For the nine months ended July 3, 2026, Digital Solutions generated $4.262 billion, or approximately 41.8%, of Amentum’s $10.205 billion in revenue; Global Engineering Solutions generated $5.943 billion, or approximately 58.2%. Their respective shares of segment Adjusted EBITDA were approximately 39.1% and 60.9%.[14][4] [1]+10

Geographic presence

Amentum’s international operations span more than 70 countries, and its Global Engineering Solutions work supports the U.S. government and allied nations across all seven continents. The company also identifies the U.K. and Australia as significant, long-standing markets for energy and defense work.[15]+3

At FY2025 year-end, Amentum reported 315 leased and two owned locations, totaling more than 7 million square feet. Major support locations included Virginia, Maryland, Nevada, Tennessee and Texas in the U.S., as well as Krakow, Dubai, Bangalore and Warrington. Other significant facilities were listed in Florida, Colorado, Indiana, South Carolina, Alabama and Connecticut, and in London, Theale and Manchester in the U.K. Employees also work at customer sites in the U.S. and other countries; the reviewed disclosures did not specify employee distribution by geography.[19]

The latest annual and interim filings reviewed did not provide revenue by country or geographic region, or geographic revenue percentages.[19] [15]+4

Business segments

Amentum reports two business segments. **Digital Solutions (DS)** provides digital and data-driven services, including intelligence analytics, space-system development, cybersecurity, and next-generation IT. **Global Engineering Solutions (GES)** focuses on environmental remediation, nuclear-power solutions, platform engineering, sustainment, and supply-chain management.[1]

For the nine months ended July 3, 2026, DS generated $4.262 billion, approximately **41.8%** of revenue, while GES generated $5.943 billion, approximately **58.2%**. The shares are calculated from reported segment revenue of $10.205 billion in total.[4] [1]+3

Company history

Amentum’s origins date to January 2020, when Amentum Joint Venture LP acquired AECOM’s Management Services business; the independent company launched the following month. It expanded through the acquisition of DynCorp International, completed in November 2020, and PAE, completed in February 2022.[20]+4

In September 2024, Amentum became a publicly traded company through a Reverse Morris Trust transaction with Jacobs. Jacobs spun off its Critical Mission Solutions business and portions of Divergent Solutions; that business merged with Legacy Amentum and was renamed Amentum Holdings, Inc. The company began trading on the New York Stock Exchange as AMTM on September 30, 2024.[25][26] [20]+6

Sources

• Amentum Holdings, Inc. — Full financial report (2026 Q 3)
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• ir.amentum.com[3]
• Amentum Holdings, Inc. — Full financial report (2025 Y)
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• www.amentum.com[13]
• www.amentum.com[18]
• www.amentum.com[21]
• aecom.com[22]
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• www.amentum.com[24]
• Amentum Holdings, Inc. — Full financial report (2024 Y)[25]