Amentum Holdings Business Summary

Amentum Holdings, Inc. (AMTM) operates an asset-light, service-oriented business model primarily driven by long-term, multi-year government contracts, including cost-plus and fixed-price arrangements. Following its transformational 2024 merger with Jacobs’ Critical Mission Solutions and Cyber & Intelligence businesses, the company restructured into two primary segments: Digital Solutions, which focuses on high-growth cybersecurity, AI, and space systems, and Global Engineering Solutions, which manages large-scale nuclear remediation, logistics, and infrastructure. With a massive $47.2 billion backlog and projected FY2026 revenue between $13.95 billion and $14.3 billion, Amentum is a dominant force in the "Big Three" of government services. It competes directly with Leidos Holdings, Booz Allen Hamilton, and CACI International, distinguishing itself through its unique scale in physical engineering and its leadership in the global nuclear energy sector. Amentum is led by CEO John Heller, the former CEO of PAE with deep expertise in government services, and Executive Chair Steve Demetriou, who previously served as the CEO of Jacobs. The executive team includes CFO Travis Johnson, COO Stephen Arnette, and CTO Jill Bruning, all of whom bring extensive backgrounds in defense and mission-critical technology. The company’s pedigree is rooted in its 2020 spin-off from AECOM’s Management Services business, initially backed by private equity firms American Securities LLC and Lindsay Goldberg. Its current board of directors features high-profile figures such as retired Generals Vincent K. Brooks and Ralph E. Eberhart, alongside representatives from American Securities, reflecting a leadership structure designed for aggressive deleveraging and high-margin digital expansion.