2025 Top 100
14: AMENTUM
| Top 100 Revenue: | $4,139,588,000 |
| Defense Revenue: | $1,998,818,000 |
| Civilian Revenue: | $2,140,770,000 |
| 2024 Revenue: | $8.4 billion |
| 2024 Earnings: | $83 million loss |
| 2023 Revenue: | N/A |
| 2023 Earnings: | N/A |
| Number of employees: | 53,000 |
| Headquarters: | Germantown, Maryland |
| Website: | https://www.amentum.com/ |
| Leadership: | John Heller, CEO Steve Arnette, COO Travis Johnson, CFO Jill Bruning, CTO Darren Burton, chief people officer Luis German, CIO Sean Mullen, chief growth officer Roela Santos, chief marketing and communications officer Michele St. Mary, general counsel Karl Spinnenweber, president, mission solutions Jennifer Walsmith, president, intelligence and cybersecurity Mark Walter, president, engineering and technology Mark Whitney, president, energy and environment Karina Vollmer, chief ethics and compliance officer Nathan Rutledge, SVP, intestor relations Adam Harrison, SVP, strategy and corporate development |
| Ticker: | AMTM |
| Lines of business: | Mission modernization and sustainment, space systems, digital transformation, sustainability and environment, advanced energy, data anlytics and cyber |
| Major customers: | Defense Department, Energy, Justice, DHS, NASA |
| Major contracts/projects: | https://www.amentum.com/contracting-vehicles/ |
