Department of Defense PSC R408 contractors

SUPPORT- PROFESSIONAL: PROGRAM MANAGEMENT/SUPPORT. Contractors in this PSC lane under Department of Defense.

Agency: Department of Defense

Last updated: April 19, 2026

Visible recipients

185

Mapped obligations

$50,160,111,866

Visible recipients tied to Department of Defense and PSC R408

Cape Fox Professional Services, LLC

Manassas, VA

Manassas, VA | 5 awards | Top agency Department of Defense | NAICS 611430

$85,910,920

Maximus INC

Mclean, VA

Mclean, VA | 5 awards | Top agency Department of Justice | NAICS 541611

$70,396,068

Nana Pacific, LLC

Herndon, VA

Herndon, VA | 20 awards | Top agency General Services Administration | NAICS 517212

$27,383,170

Sos International LLC

Reston, VA

Reston, VA | 138 awards | Top agency Department of Defense | NAICS 561210

$264,903,060

Mantech Information Systems & Technology Corporation

Fairfax, VA

Fairfax, VA | 5 awards | Top agency Department of Justice | NAICS 541611

$17,696,428

Avantus Federal LLC

Mc Lean, VA

Mc Lean, VA | 95 awards | Top agency Department of Defense | NAICS 541330

$354,843,165

International Sos Government Services LLC

San Antonio, TX

San Antonio, TX | 61 awards | Top agency Department of Defense | NAICS 524114

$906,871

Guidehouse LLP

Mc Lean, VA

Mc Lean, VA | 134 awards | Top agency Department of State | NAICS 541611

$978,680,114

Chickasaw Advisory Services, LLC

Norman, OK

Norman, OK | 5 awards | Top agency Department of Health and Human Services | NAICS 541519

$19,753,284

Sev1tech, LLC

Woodbridge, VA

Woodbridge, VA | 225 awards | Top agency Department of Defense | NAICS 541712

$79,614,417

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