Top 73 Contractors in PSC B541: Defense Studies, Jul 2025–Jun 2026
Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe
The top 10 won 92% of PSC B541 contract dollars from July 2025 through June 2026
Ranking facts
- Contract obligations
- $582,663,253 Net of deobligations, by contracts coded PSC B541
- Contractors
- 74 Parent companies with an obligation
- Largest contractor
- Parsons Corporation $171 million, 28.1% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 73 rows as CSV
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 |
Parsons Corporation
Top agencies
|
$171,111,638 | ||
| 2 |
The Johns Hopkins University Applied Physics Laboratory LLC
|
$141,109,303 | ||
| 3 | $98,325,525 | |||
| 4 | $69,445,749 | |||
| 5 | $39,518,042 | |||
| 6 | $12,102,002 | |||
| 7 | $10,942,983 | |||
| 8 | $9,286,130 | |||
| 9 |
Leidos Holdings, Inc.
Top agencies
|
$6,986,780 | ||
| 10 | $1,964,555 | |||
| 11 | $1,794,976 | |||
| 12 | $1,300,666 | |||
| 13 | $1,264,934 | |||
| 14 | $949,920 | |||
| 15 |
Fedtec LLC
Top agencies
|
$945,839 | ||
| 16 | $806,274 | |||
| 17 |
The Boeing Company
Top agencies
|
$545,421 | ||
| 18 | $493,136 | |||
| 19 | $405,566 | |||
| 20 | $364,822 | |||
| 21 | $361,792 | |||
| 22 | $350,000 | |||
| 23 | $350,000 | |||
| 24 | $350,000 | |||
| 25 | $350,000 | |||
| 26 | $350,000 | |||
| 27 | $350,000 | |||
| 28 | $350,000 | |||
| 29 | $350,000 | |||
| 30 | $350,000 | |||
| 31 | $350,000 | |||
| 32 | $350,000 | |||
| 33 | $349,997 | |||
| 34 | $349,995 | |||
| 35 | $349,993 | |||
| 36 | $349,988 | |||
| 37 | $349,855 | |||
| 38 | $349,798 | |||
| 39 | $349,748 | |||
| 40 | $349,000 | |||
| 41 | $348,717 | |||
| 42 | $348,000 | |||
| 43 | $345,285 | |||
| 44 | $345,000 | |||
| 45 | $345,000 | |||
| 46 | $340,000 | |||
| 47 | $340,000 | |||
| 48 | $337,325 | |||
| 49 | $329,504 | |||
| 50 | $328,432 | |||
| 51 |
Chickasaw Nation
Top agencies
|
$325,817 | ||
| 52 | $320,000 | |||
| 53 | $319,525 | |||
| 54 | $318,938 | |||
| 55 | $314,941 | |||
| 56 | $310,000 | |||
| 57 | $310,000 | |||
| 58 |
Kitware Inc.
Top agencies
|
$310,000 | ||
| 59 | $310,000 | |||
| 60 | $309,999 | |||
| 61 | $309,933 | |||
| 62 | $303,150 | |||
| 63 |
BAE Systems
Top agencies
|
$302,851 | ||
| 64 | $301,037 | |||
| 65 | $300,000 | |||
| 66 | $298,888 | |||
| 67 |
Leonardo S.p.A.
Top agencies
|
$200,772 | ||
| 68 |
The Ottery Group, Inc.
Top agencies
|
$198,854 | ||
| 69 | $195,001 | |||
| 70 | $99,730 | |||
| 71 |
Applied Mathematics, Inc.
Top agencies
|
$50,000 | ||
| 72 |
Cubic Defense Applications Inc.
Top agencies
|
$21,000 | ||
| 73 |
Board of Regents of the University System of Georgia
Top agencies
|
$9,999 |
Show 48 more
73 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 $610 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 B541 contractors in Jul 2025–Jun 2026?
1. Parsons Corporation ($171M), 2. The Johns Hopkins University Applied Physics Laboratory LLC ($141M), 3. The CNA Corporation ($98.3M), 4. The Rand Corporation ($69.4M), 5. Dzyne Technologies, LLC ($39.5M), 6. Lockheed Martin Corporation ($12.1M), 7. Booz Allen Hamilton Holding Corporation ($10.9M), 8. Hart Technologies, Inc. ($9.29M), 9. Leidos Holdings, Inc. ($6.99M), 10. A3 Technologies Inc. ($1.96M).
On GovTribe
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