Company

Amentum Holdings, Inc.

Amentum is a global advanced engineering and technology solutions provider to U.S. and allied government agencies, and to international and commercial customers. ↗

Headquarters	Chantilly, VA ↗
Founded	2020 ↗
Leadership	John E. Heller, Chief Executive Officer ↗
Employees	approximately 50,000 ↗
Revenue	$14.4 billion (fiscal 2025) ↗
Department of War obligations	$17.6 billion in prime contracts since fiscal 2022 ↗
Ownership	Public (NYSE: AMTM) ↗
Shares	AMTM ↗
Website	www.amentum.com ↗

Products

Amentum runs integrated biometrics for DHS immigration applications at 130 USCIS locations. ↗

Customers

The Department of Energy is a U.S. customer of Amentum. ↗
The Department of War is a customer of Amentum, which engineers advanced systems for it. ↗
NASA is a customer, and Amentum is prime contractor for its Exploration Ground Systems Program at Kennedy Space Center. ↗
The Department of Homeland Security is a customer; Amentum provides research and development solutions for it. ↗
The U.K. Ministry of Defence, the U.K. Nuclear Decommissioning Authority and the Australian Department of Defence are Amentum customers. ↗

Deals since 2020

Apr 202523

Lockheed Martin buys Rapid Solutions business of Amentum

Seller: Amentum Holdings · Backed by American Securities and Lindsay Goldberg

A manufacturer of products aligned to national security missions

C4ISR and electronicscomponents and materialsSource

$360 millionClosed Jun 26, 2025

Nov 202320

Amentum Holdings merges with Jacobs' Critical Mission Solutions and Cyber & Intelligence businesses

Seller: Jacobs Solutions · Backed by American Securities and Lindsay Goldberg

Mission-critical, technology-driven services in government and commercial markets

IT and government servicescyberintelligence communitySource

$1 billionClosed Sep 27, 2024

Oct 202125

Amentum Holdings buys PAE

Seller: PAE Incorporated stockholders, including Platinum Equity affiliates · Backed by American Securities and Lindsay Goldberg

A company focused on delivering mission-critical solutions to the U.S. government and its allies on all seven continents

IT and government servicesMRO and sustainmentintelligence communitySource

$1.9 billionClosed Feb 15, 2022

Sep 202024

Amentum Holdings buys DynCorp International

Backed by American Securities and Lindsay Goldberg

A provider of sophisticated aviation, logistics, training, intelligence and operational solutions in over 30 countries worldwide