| 1 | BATTELLE ENERGY ALLIANCE, LLC | $26,114,643,336 | 1 | $26,114,643,336 | Nov 09, 2004 | Department of Energy |
| 2 | OAK RIDGE ASSOCIATED UNIVERSITIES, INCORPOR… | $3,083,444,129 | 2 | $1,541,722,065 | Feb 19, 2022 | Department of Energy |
| 3 | HII MISSION TECHNOLOGIES CORP | $1,230,893,193 | 2 | $615,446,596 | Sep 16, 2024 | General Services Administ… |
| 4 | PTSI MANAGED SERVICES INC | $591,008,014 | 1 | $591,008,014 | Mar 30, 2023 | Department of Transportat… |
| 5 | BLUESTAQ LLC | $515,265,631 | 1 | $515,265,631 | Aug 01, 2019 | General Services Administ… |
| 6 | RESEARCH TRIANGLE INSTITUTE | $292,487,457 | 6 | $48,747,909 | Sep 30, 2024 | Department of Health and … |
| 7 | CACI, INC. - FEDERAL | $243,004,009 | 3 | $81,001,336 | Sep 23, 2025 | General Services Administ… |
| 8 | AMERICAN TYPE CULTURE COLLECTION | $226,185,139 | 2 | $113,092,569 | Sep 11, 2026 | Department of Health and … |
| 9 | SAFEGUARD SERVICES LLC | $219,079,652 | 1 | $219,079,652 | Nov 01, 2016 | Department of Health and … |
| 10 | BOOZ ALLEN HAMILTON INC | $211,497,561 | 12 | $17,624,797 | Apr 22, 2026 | Department of Energy |
| 11 | THE MITRE CORPORATION | $166,346,091 | 27 | $6,160,966 | Jul 09, 2026 | Department of Commerce |
| 12 | BAE SYSTEMS TECHNOLOGY SOLUTIONS & SERVICES… | $140,150,099 | 4 | $35,037,525 | Jul 15, 2025 | Department of Homeland Se… |
