Top DoD all other professional, scientific, and technical services contractors
In the 12 months ending Oct 5, 2026, the Department of Defense obligated $5.5B in net prime contract dollars under NAICS 541990, down 11.5% from $6.2B in the preceding 12 months. 518 prime contractors received positive obligations, and 33 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Defense. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
DoD publishes contract data to USAspending with a 90-day delay, so the most recent months understate DoD activity.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top DoD contractors for NAICS 541990
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | HII Mission Technologies Corp | $630.5M | $484.6M | 11.5% | ▲ 3 |
| 2 | Booz Allen Hamilton Inc | $576.1M | $496.2M | 10.5% | ▲ 1 |
| 3 | Sierra Nevada Company, LLC | $535.4M | $632.3M | 9.7% | ▼ 2 |
| 4 | The MITRE Corporation | $430.5M | $557.9M | 7.8% | ▼ 2 |
| 5 | Lockheed Martin Corporation | $360.3M | $86.0M | 6.5% | ▲ 8 |
| 6 | Northrop Grumman Systems Corporation | $217.5M | $339.3M | 4.0% | ▼ 1 |
| 7 | CACI, Inc. - Federal | $200.1M | $130.1M | 3.6% | ▲ 1 |
| 8 | Institute for Defense Analyses | $192.8M | $236.5M | 3.5% | ▼ 2 |
| 9 | Bluestaq LLC | $170.7M | $115.8M | 3.1% | ▲ 1 |
| 10 | The Johns Hopkins University Applied Physics Laboratory LLC | $101.0M | $171.5M | 1.8% | ▼ 3 |
| 11 | Systems Planning and Analysis, Inc. | $78.9M | $55.0M | 1.4% | ▲ 10 |
| 12 | The CNA Corporation | $76.0M | $105.9M | 1.4% | ▼ 1 |
| 13 | Raytheon Southeast Asia Systems Company | $57.5M | $0 | 1.0% | New |
| 14 | Accenture Federal Services LLC | $56.9M | $70.6M | 1.0% | ▲ 3 |
| 15 | Valiant Global Defense Services Inc. | $55.3M | $80.5M | 1.0% | — |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Lockheed Martin Corporation$86.0M → $360.3M (+$274.3M) · now #5
- HII Mission Technologies Corp$484.6M → $630.5M (+$145.9M) · now #1
- Booz Allen Hamilton Inc$496.2M → $576.1M (+$79.9M) · now #2
Largest declines
- The MITRE Corporation$557.9M → $430.5M (−$127.4M) · now #4
- Northrop Grumman Systems Corporation$339.3M → $217.5M (−$121.8M) · now #6
- Sierra Nevada Company, LLC$632.3M → $535.4M (−$97.0M) · now #3
New to this market
85 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Chitra Productions LLC | Jan 13, 2026 | $19.2M |
| Modern Technology Solutions, Inc. | Mar 27, 2026 | $17.0M |
| General Dynamics Land Systems Customer Service & Support Company | Feb 27, 2026 | $5.3M |
| California Department of Fish & Wildlife | Jan 30, 2026 | $3.3M |
| Nalu Federal LLC | Dec 16, 2025 | $3.2M |
| White Pine Innovations, LLC | Jun 10, 2026 | $2.9M |
| Athena Consulting LLC | Dec 2, 2025 | $2.6M |
| Unami LLC | Feb 27, 2026 | $2.5M |
Where the money comes from
Funding sub-agencies within the Department of Defense, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| Department of the Army | $2.0B | $1.6B | Up $384.4M (24.1%) |
| Department of the Air Force | $1.8B | $2.5B | Down $668.0M (26.7%) |
| Immediate Office of the Secretary of Defense | $595.6M | $644.1M | Down $48.5M (7.5%) |
| Department of the Navy | $546.7M | $651.9M | Down $105.3M (16.1%) |
| Defense Advanced Research Projects Agency | $184.7M | $249.4M | Down $64.7M (25.9%) |
| Defense Health Agency | $105.4M | $122.8M | Down $17.4M (14.2%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| FA862025FB029 | Sierra Nevada Company, LLC AFLCMC/WI | $300.2M | Oct 31, 2026 |
| 47QFCA23F0016 | HII Mission Technologies Corp BASIC TASK ORDER AWARD | $604.9M | Feb 28, 2027 |
| HQ003424F0002 | Institute for Defense Analyses INSTITUTE FOR DEFENSE ANALYSIS, FEDERALLY FUNDED RESEARCH AND DEVELOPMENT CENTER IS TO PROVIDE RESEARCH AND ANALYSIS SUPPORT SERVICES | $219.7M | Apr 23, 2027 |
| N0001924C0005 | Northrop Grumman Systems Corporation TRITON SUSTAINING AND ENGINEERING | $449.0M | May 16, 2027 |
| FA862023F4075 | Sierra Nevada Company, LLC BIG SAFARI | $265.6M | May 31, 2027 |
| HQ003422F0001 | The Johns Hopkins University Applied Physics Laboratory LLC JOHNS HOPKINS UNIVERSITY APPLIED PHYSICS LABORATORY WILL SUPPORT THE OFFICE OF THE UNDER SECRETARY OF DEFENSE FOR RESEARCH AND ENGINEERING WITH THIS POWER PROJECTION 3 TASK ORDER… | $346.7M | Jun 29, 2027 |
| 47QFCA19C0016 | Bluestaq LLC AIR FORCE RESEARCH LABORATORY (AFRL)/AIR FORCE SPACE AND MISSILE SYSTEMS CENTER (SMC), HAS A NEED TO EXPAND THE ADVANCED COMMAND AND CONTROL ENTERPRISE SYSTEMS AND SOFTWARE… | $525.4M | Jul 31, 2027 |
| 47QFCA24F0037 | Booz Allen Hamilton Inc SERVICE SOLUTIONS FOR MODERNIZATION ANALYSIS READINESS CAPABILITY THREAT AND TRAINING SSMARTT | $774.2M | Sep 9, 2027 |
| 47QFCA24F0043 | HII Mission Technologies Corp AWARD LOGISTICS INTELLIGENCE SURVEILLANCE AND RECONNAISSANCE ISR AND NEXTGEN TECHNOLOGY (LOGIX) | $768.0M | Sep 15, 2027 |
| HQ003424F0422 | Institute for Defense Analyses FEDERALLY FUNDED RESEARCH AND DEVELOPMENT CENTER SUPPORT FOR RESEARCH AND ANALYSIS SUPPORT TO THE OFFICE OF THE SECRETARY OF DEFENSE, JOINT STAFF, DEFENSE AGENCIES, AND OTHER… | $219.4M | Feb 24, 2028 |
Common questions
Who are the top DoD contractors for NAICS 541990?
In the latest 12 months, HII Mission Technologies Corp ($630.5M), Booz Allen Hamilton Inc ($576.1M), Sierra Nevada Company, LLC ($535.4M) received the most DoD obligations for all other professional, scientific, and technical services.
How concentrated is this market?
The eight largest primes held 57.1% of positive obligations, and HII Mission Technologies Corp alone held 11.5%. 85 contractors won their first obligations in this market during the latest 12 months.
Are any large DoD NAICS 541990 contracts ending soon?
10 of the largest awards in this market reach their current end date in the next 18 months. The first is FA862025FB029 (Sierra Nevada Company, LLC, $300.2M obligated), ending Oct 31, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
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$99.3MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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