Top 60 Contractors in PSC AD: Defense (Other) R&D, Jul 2025–Jun 2026
Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe
The top 10 won 81% of PSC AD contract dollars from July 2025 through June 2026
Ranking facts
- Contract obligations
- $854,404,472 Net of deobligations, by contracts coded PSC AD or a code under it
- Contractors
- 67 Parent companies with an obligation
- Largest contractor
- Accelint Intelligent Systems, LLC $289 million, 31.0% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 60 rows as CSV
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $289,057,284 | |||
| 2 | $112,521,396 | |||
| 3 | $84,263,730 | |||
| 4 | $80,769,000 | |||
| 5 | $43,354,286 | |||
| 6 | $37,083,221 | |||
| 7 | $35,424,917 | |||
| 8 |
RTX Corporation
|
$26,965,118 | ||
| 9 | $25,756,760 | |||
| 10 | $21,184,580 | |||
| 11 | $18,240,548 | |||
| 12 | $15,370,871 | |||
| 13 | $14,083,132 | |||
| 14 | $9,071,774 | |||
| 15 | $6,408,730 | |||
| 16 | $5,470,228 | |||
| 17 | $4,676,984 | |||
| 18 | $4,531,149 | |||
| 19 | $4,119,299 | |||
| 20 |
Asgn Incorporated
|
$3,256,475 | ||
| 21 |
Nanoracks, LLC
Top agencies
|
$2,963,153 | ||
| 22 | $2,862,010 | |||
| 23 | $2,766,447 | |||
| 24 | $2,500,000 | |||
| 25 |
Expedition Technology, LLC
Top agencies
|
$2,186,808 | ||
| 26 | $2,069,143 | |||
| 27 |
The Johns Hopkins University Applied Physics Laboratory LLC
|
$1,960,543 | ||
| 28 |
Nalas Engineering Services Inc
Top agencies
|
$1,623,698 | ||
| 29 |
Quantum Semiconductor LLC
Top agencies
|
$1,484,822 | ||
| 30 | $1,396,920 | |||
| 31 | $1,303,045 | |||
| 32 | $1,289,250 | |||
| 33 |
Spaceworks Enterprises Inc.
Top agencies
|
$1,185,117 | ||
| 34 |
Battelle Memorial Institute
Top agencies
|
$1,121,486 | ||
| 35 | $984,405 | |||
| 36 | $932,047 | |||
| 37 | $825,125 | |||
| 38 |
Noresco, LLC
Top agencies
|
$791,947 | ||
| 39 | $618,569 | |||
| 40 | $588,465 | |||
| 41 | $464,506 | |||
| 42 |
Teamstaff Inc.
Top agencies
|
$407,995 | ||
| 43 |
Serco-Ips Corporation
Top agencies
|
$381,153 | ||
| 44 |
Amentum Holdings, Inc.
Top agencies
|
$330,630 | ||
| 45 | $267,375 | |||
| 46 |
Kitware Inc.
Top agencies
|
$202,701 | ||
| 47 | $171,000 | |||
| 48 |
Fortem Technologies Inc
Top agencies
|
$127,630 | ||
| 49 | $112,244 | |||
| 50 | $89,677 | |||
| 51 |
Mayo Clinic
Top agencies
|
$81,855 | ||
| 52 |
Energysolutions Services, Inc.
Top agencies
|
$65,298 | ||
| 53 |
Safe Inc.
Top agencies
|
$61,088 | ||
| 54 |
Silverblock Systems Inc.
Top agencies
|
$52,122 | ||
| 55 |
Fibertek, Inc.
Top agencies
|
$41,662 | ||
| 56 |
Venesco LLC
Top agencies
|
$34,244 | ||
| 57 |
Propel, LLC
Top agencies
|
$18,736 | ||
| 58 |
Parsons Corporation
Top agencies
|
$2,676 | ||
| 59 | $2,492 | |||
| 60 |
Technologist Inc.
Top agencies
|
$829 |
Show 35 more
60 of 67 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 $932 million 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. 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 Jul 2024–Jun 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 AD contractors in Jul 2025–Jun 2026?
1. Accelint Intelligent Systems, LLC ($289M), 2. Lockheed Martin Corporation ($113M), 3. Leidos Holdings, Inc. ($84.3M), 4. Seqirus Inc. ($80.8M), 5. The Aerospace Corporation ($43.4M), 6. Two Six Labs, LLC ($37.1M), 7. The National Advanced Mobility Consortium, Inc. ($35.4M), 8. RTX Corporation ($27M), 9. Applied Research Associates, Inc. ($25.8M), 10. BAE Systems ($21.2M).
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