Top 71 Contractors in PSC AC15: National Defense R&D Services; Department of Defense – Military; R&D Facilities & Major Equipment, Aug 2025–Jul 2026
Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe
The latest 12 months. See the newest fiscal year's list: Top Contractors in PSC AC15: National Defense R&D Services; Department of Defense – Military; R&D Facilities & Major Equipment, FY2025.
The top 10 won 89% of PSC AC15 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $2,455,249,909 Net of deobligations, by contracts coded PSC AC15
- Contractors
- 74 Parent companies with an obligation
- Largest contractor
- L3Harris Technologies, Inc. $990 million, 38.8% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 71 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $990,010,790 | |||
| 2 | $531,204,473 | |||
| 3 | $233,897,317 | |||
| 4 | $173,942,304 | |||
| 5 | $106,473,497 | |||
| 6 |
CACI International Inc.
Top agencies
|
$60,052,355 | ||
| 7 | $57,477,298 | |||
| 8 | $56,920,212 | |||
| 9 |
Analytic Services Inc.
Top agencies
|
$45,213,013 | ||
| 10 |
KBR Wyle Services LLC
Top agencies
|
$23,716,124 | ||
| 11 |
Textron Inc.
Top agencies
|
$16,337,154 | ||
| 12 | $12,918,376 | |||
| 13 | $11,000,000 | |||
| 14 |
ManTech International Corporation
Top agencies
|
$10,904,830 | ||
| 15 |
Peraton Inc.
Top agencies
|
$9,382,973 | ||
| 16 | $9,302,846 | |||
| 17 |
BAE Systems
Top agencies
|
$8,768,839 | ||
| 18 | $7,833,762 | |||
| 19 |
Serco Inc
Top agencies
|
$7,331,794 | ||
| 20 |
Fibertek, Inc.
Top agencies
|
$6,984,160 | ||
| 21 | $6,708,000 | |||
| 22 | $5,676,073 | |||
| 23 |
Vector CSP LLC
Top agencies
|
$5,523,095 | ||
| 24 | $4,055,992 | |||
| 25 | $3,923,064 | |||
| 26 | $3,524,958 | |||
| 27 |
Vector Atomic Inc
Top agencies
|
$3,200,000 | ||
| 28 |
Nemean Solutions LLC
Top agencies
|
$2,853,703 | ||
| 29 | $2,000,000 | |||
| 30 |
Abram Scientific Inc
Top agencies
|
$1,999,977 | ||
| 31 | $1,950,003 | |||
| 32 |
Kbr, Inc.
Top agencies
|
$1,931,604 | ||
| 33 | $1,799,993 | |||
| 34 | $1,799,488 | |||
| 35 | $1,798,006 | |||
| 36 | $1,793,497 | |||
| 37 | $1,745,833 | |||
| 38 | $1,743,238 | |||
| 39 | $1,499,908 | |||
| 40 | $1,499,832 | |||
| 41 | $1,404,410 | |||
| 42 |
Zivko Aeronautics Inc.
Top agencies
|
$1,369,173 | ||
| 43 |
Spectral Energies LLC
Top agencies
|
$1,282,630 | ||
| 44 |
Amentum Holdings, Inc.
Top agencies
|
$1,264,304 | ||
| 45 |
Web Sensing LLC
Top agencies
|
$1,249,833 | ||
| 46 | $1,245,182 | |||
| 47 | $1,197,000 | |||
| 48 | $1,072,980 | |||
| 49 |
Nanosonic Inc.
Top agencies
|
$1,010,230 | ||
| 50 | $999,879 | |||
| 51 | $936,389 | |||
| 52 | $899,920 | |||
| 53 | $898,226 | |||
| 54 | $806,480 | |||
| 55 | $699,974 | |||
| 56 |
Punch Cyber Corp
Top agencies
|
$678,228 | ||
| 57 |
I2K Connect Inc.
Top agencies
|
$596,847 | ||
| 58 | $502,665 | |||
| 59 | $500,000 | |||
| 60 | $500,000 | |||
| 61 | $333,752 | |||
| 62 | $213,969 | |||
| 63 |
Sossec, Inc.
Top agencies
|
$200,804 | ||
| 64 |
Pierre John M LLC
Top agencies
|
$194,401 | ||
| 65 | $149,934 | |||
| 66 | $149,932 | |||
| 67 | $149,760 | |||
| 68 | $149,565 | |||
| 69 | $123,039 | |||
| 70 |
Crucible Services LLC
Top agencies
|
$92,700 | ||
| 71 |
Brinkmann Instruments Inc.
Top agencies
|
$13,124 |
Show 46 more
71 of 74 contractors listed here. See the rest on GovTribe.
How this ranking works
- Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
- Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $2.55 billion obligated before deobligations, so they never pass 100%.
- Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
- Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
- Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
- Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
- Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.
Quick answers
Who were the top 10 PSC AC15 contractors in Aug 2025–Jul 2026?
1. L3Harris Technologies, Inc. ($990M), 2. Lockheed Martin Corporation ($531M), 3. Northrop Grumman Systems Corporation ($234M), 4. United States-Australia Gallium PTY Ltd ($174M), 5. Sierra Nevada Company, LLC ($106M), 6. CACI International Inc. ($60.1M), 7. Radiance Technologies, Inc. ($57.5M), 8. Alvarez & Marsal Federal, LLC ($56.9M), 9. Analytic Services Inc. ($45.2M), 10. KBR Wyle Services LLC ($23.7M).
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