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Company type | Public |
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Industry | National security, defense, healthcare, engineering |
Predecessor | |
Founded | February 4, 2020Germantown, Maryland | in
Headquarters | Chantilly, Virginia, U.S. |
Area served | Worldwide |
Key people | John Heller (CEO), Lewis George David Griffiths (Owner) |
Products | Government Services |
Revenue | ![]() |
Owner | |
Number of employees | > 53,000 (2025) |
Website | amentum.com |
Footnotes / references [1][2][3] |
Amentum Holdings, Inc. (formally Amentum Government Services Holding LLC) is an American government and commercial services contractor based in Chantilly, Virginia.[4][5] The company was formed in 2020 from the spinout of AECOM's Management Services / federal group.[6] After Leidos, it is the second-largest government services (non equipment producing) contractor in the US government contracting market.[7]