| 1 | BECHTEL NATIONAL, INC. | $17,244,586,106 | 1 | $17,244,586,106 | Dec 15, 2000 | Department of Energy |
| 2 | FISHER SAND & GRAVEL CO | $5,442,029,612 | 3 | $1,814,009,871 | Jun 03, 2026 | Department of Homeland Se… |
| 3 | SPENCER CONSTRUCTION LLC | $2,186,476,257 | 4 | $546,619,064 | Mar 18, 2026 | Department of Homeland Se… |
| 4 | CADDELL CONSTRUCTION CO. (DE), LLC | $1,489,905,610 | 4 | $372,476,402 | Nov 01, 2022 | Department of State |
| 5 | SEQIRUS INC | $1,430,622,665 | 1 | $1,430,622,665 | Jan 15, 2009 | Department of Health and … |
| 6 | CLARK CONSTRUCTION GROUP LLC | $1,095,874,332 | 3 | $365,291,444 | Oct 01, 2025 | Department of Health and … |
| 7 | WHITING-TURNER CONTRACTING COMPANY, THE | $1,058,920,858 | 10 | $105,892,086 | Apr 29, 2026 | Department of Homeland Se… |
| 8 | BRASFIELD & GORRIE LLC | $1,009,720,890 | 4 | $252,430,223 | Dec 13, 2024 | General Services Administ… |
| 9 | COCHRANE USA INC | $641,277,600 | 1 | $641,277,600 | Mar 05, 2026 | Department of Homeland Se… |
| 10 | HENSEL PHELPS CONSTRUCTION CO. | $640,160,947 | 2 | $320,080,474 | Sep 20, 2024 | General Services Administ… |
| 11 | BARNARD SPENCER JOINT VENTURE | $634,420,201 | 1 | $634,420,201 | Sep 19, 2025 | Department of Homeland Se… |
| 12 | BL HARBERT INTERNATIONAL LLC | $488,819,367 | 4 | $122,204,842 | Sep 13, 2024 | Department of State |
