| 1 | THE LEWIN GROUP, INC. | $114,957,302 | 5 | $22,991,460 | Apr 24, 2026 | Department of Health and … |
| 2 | EDUCATIONAL TESTING SERVICE | $108,331,878 | 4 | $27,082,969 | Dec 20, 2024 | Department of Education |
| 3 | WESTAT, INC. | $104,995,281 | 5 | $20,999,056 | Dec 31, 2025 | Department of Education |
| 4 | MATHEMATICA INC. | $47,963,478 | 6 | $7,993,913 | Sep 08, 2026 | Department of Health and … |
| 5 | AMERICAN INSTITUTES FOR RESEARCH IN THE BEH… | $45,691,271 | 4 | $11,422,818 | Apr 20, 2026 | Department of Health and … |
| 6 | THE REGENTS OF THE UNIVERSITY OF COLORADO | $39,100,299 | 1 | $39,100,299 | Mar 01, 2018 | National Aeronautics and … |
| 7 | GENERAL DYNAMICS INFORMATION TECHNOLOGY, IN… | $26,809,188 | 1 | $26,809,188 | Sep 21, 2022 | Department of Health and … |
| 8 | RESEARCH TRIANGLE INSTITUTE | $24,360,992 | 1 | $24,360,992 | Feb 14, 2022 | Department of Education |
| 9 | NATIONAL OPINION RESEARCH CENTER | $24,337,219 | 3 | $8,112,406 | Jul 15, 2025 | Department of Health and … |
| 10 | THE MITRE CORPORATION | $20,528,049 | 6 | $3,421,342 | Sep 01, 2025 | Department of Commerce |
| 11 | ICF MACRO INC | $11,658,873 | 1 | $11,658,873 | Sep 09, 2010 | Department of Health and … |
| 12 | NCS PEARSON INC | $10,017,902 | 1 | $10,017,902 | Dec 20, 2024 | Department of Education |
