Amentum Holdings LLC

Chantilly, VA

UEI
LMHQY3226778
CAGE
8GLL3
Primary NAICS
541330 Engineering Services
SAM.gov registration
Active through

Company facts

FY2025 rankings

Its parent company, Amentum Holdings, Inc., ranks:

and 98 more

Self-certified in SAM.gov
  • For Profit Organization
  • Limited Liability Company
Entity structure
Other
Corporate family
SAM.gov registration date
Physical address
4800 Westfields Blvd #400, Chantilly, VA 20151, USA
Website
amentum.com
Founded
2020
Employees
50K-100K
Estimated annual revenue
$10B+
Industry
  1. Industrials
  2. Capital Goods
  3. Construction & Engineering
  4. Civil Engineering
SIC code
87 Engineering & Management Services
Profiles

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .

Contract subawards

Prime contractor Prime award Amount Awarded
Fluor Marine Propulsion, LLC MANAGEMENT AND OPERATION OF THE NAVAL NUCLEAR LABORATORY AND NAVAL NUCLEAR PROPULSION PROGRAM SUPPORT Interim Irradiations Examinations Recapitalization… 89233018CNR000004 $438,167

Similar vendors

About the company

Amentum Holdings LLC is a premier global technical and engineering services partner supporting critical defense, security, intelligence, energy, and environmental programs of national significance. Through federal contract awards, Amentum provides IT services, staff augmentation support, and other technical and engineering services.

Amentum has received federal subcontract awards for IT services from prime contractor Schafer Government Services, LLC on multiple occasions. Additionally, Amentum has provided staff augmentation support under a federal subcontract with prime contractor Nuclear Waste Partnership LLC. The company also has a subcontract award for unspecified staff augmentation support services. Based on this history of federal subcontract awards, Amentum specializes in providing IT, engineering, and technical staffing services to support critical national security and infrastructure programs.

Quick answers

Is Amentum Holdings LLC registered in SAM.gov?

Yes. Amentum Holdings LLC's SAM.gov registration is active through March 2, 2027.

How does Amentum Holdings LLC rank among federal contractors?

Amentum Holdings LLC's parent company, Amentum Holdings, Inc., ranked #1 in NAICS 48-49, #1 in NAICS 5629 and #1 in NAICS 8111 in FY2025.

On GovTribe

See Amentum Holdings LLC's full federal record

  • Federal contract awards
  • IDV awards
  • Contract vehicles
  • Federal grant awards
  • Subcontracting relationships
  • Funding analysis by agency, NAICS and set-aside
  • Similar vendors