Amentum Holdings, Inc.

Amentum Holdings, Inc. is a global government and commercial services company specializing in advanced engineering and technology-driven solutions. Headquartered in Chantilly, Virginia, it focuses on supporting mission-critical programs for the United States government, allied nations, and select private-sector clients across defense, intelligence, space, energy, and environmental domains. Amentum delivers services such as systems engineering, operations and maintenance, nuclear and environmental remediation, logistics, facility management, and cyber and intelligence support, often in highly sensitive, secure, or technically demanding settings. Its offerings play a central role in areas like nuclear deterrence, homeland security, classified intelligence programs, and complex infrastructure and laboratory operations. By integrating engineering expertise with innovative technologies, Amentum helps government agencies and commercial customers manage risk, sustain critical assets, and ensure continuity of essential national and global missions across multiple regions and operating environments.

Sector

Industrials

Industry

Specialty Business Services

CEO

Mr. John E. Heller

Employees

50,000

Headquarters

Chantilly, VA, United States

Website

www.amentum.com