Top 100 Contractors in PSC M1: Operate Government Owned Buildings, 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 M1: Operate Government Owned Buildings, FY2025.
The top 10 won 70% of PSC M1 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $45,006,491,320 Net of deobligations, by contracts coded PSC M1 or a code under it
- Contractors
- 900 Parent companies with an obligation
- Largest contractor
- Honeywell International Inc. $6.14 billion, 13.2% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 | $6,142,120,811 | |||
| 2 | $5,465,603,599 | |||
| 3 |
Fluor Corporation
Top agencies
|
$4,961,423,937 | ||
| 4 | $3,854,814,794 | |||
| 5 |
Ut-Battelle LLC
Top agencies
|
$3,109,333,272 | ||
| 6 | $3,084,909,240 | |||
| 7 | $1,692,676,352 | |||
| 8 |
Grimes Aerospace Company
|
$1,511,971,053 | ||
| 9 | $1,383,957,122 | |||
| 10 | $1,270,400,000 | |||
| 11 | $1,087,254,684 | |||
| 12 | $971,289,153 | |||
| 13 | $932,845,629 | |||
| 14 | $890,912,411 | |||
| 15 | $878,278,677 | |||
| 16 | $767,366,228 | |||
| 17 | $760,704,339 | |||
| 18 | $326,534,934 | |||
| 19 | $306,006,696 | |||
| 20 |
Suratech LLC
Top agencies
|
$293,526,843 | ||
| 21 | $273,571,551 | |||
| 22 |
Sodexo Management Inc.
Top agencies
|
$265,568,406 | ||
| 23 | $236,215,254 | |||
| 24 | $208,864,528 | |||
| 25 | $190,031,960 | |||
| 26 | $134,746,560 | |||
| 27 | $130,463,643 | |||
| 28 | $122,259,464 | |||
| 29 |
Olin Corporation
Top agencies
|
$120,725,967 | ||
| 30 | $117,692,990 | |||
| 31 | $116,404,462 | |||
| 32 |
LDRM LLC
Top agencies
|
$115,014,948 | ||
| 33 | $101,423,939 | |||
| 34 |
The GEO Group, Inc.
Top agencies
|
$82,706,598 | ||
| 35 | $81,219,126 | |||
| 36 | $78,561,924 | |||
| 37 |
Midwest Air Traffic Control Service Inc
Top agencies
|
$77,020,631 | ||
| 38 |
Pacific-Gulf Marine, Inc.
Top agencies
|
$75,533,832 | ||
| 39 |
Indyne Inc.
Top agencies
|
$73,729,129 | ||
| 40 |
Koa Lani JV LLC
Top agencies
|
$72,864,556 | ||
| 41 | $72,172,440 | |||
| 42 |
KBR Wyle Services LLC
|
$69,992,582 | ||
| 43 | $67,809,958 | |||
| 44 |
CAE Inc.
Top agencies
|
$66,422,842 | ||
| 45 | $63,190,683 | |||
| 46 | $63,009,964 | |||
| 47 |
Ocean Shipholdings, Inc.
Top agencies
|
$59,869,588 | ||
| 48 |
RTX Corporation
Top agencies
|
$56,742,949 | ||
| 49 | $56,684,062 | |||
| 50 | $56,371,248 | |||
| 51 | $54,532,900 | |||
| 52 | $53,366,210 | |||
| 53 |
Horizon Djibouti Terminals Ltd
Top agencies
|
$46,746,500 | ||
| 54 | $45,870,796 | |||
| 55 | $45,161,669 | |||
| 56 | $44,466,633 | |||
| 57 |
Greenlight Group LLC
Top agencies
|
$43,821,000 | ||
| 58 | $42,861,521 | |||
| 59 | $40,900,504 | |||
| 60 |
T&H Services, LLC
Top agencies
|
$37,637,769 | ||
| 61 | $36,693,723 | |||
| 62 | $36,542,684 | |||
| 63 |
American Ordnance LLC
Top agencies
|
$36,227,469 | ||
| 64 |
Serco Inc
|
$35,698,416 | ||
| 65 |
CGI Federal Inc.
Top agencies
|
$34,938,968 | ||
| 66 | $34,091,251 | |||
| 67 |
The Timken Company
Top agencies
|
$33,531,835 | ||
| 68 | $33,337,420 | |||
| 69 |
Chevron Al Khalij
Top agencies
|
$31,216,404 | ||
| 70 |
BAE Systems
Top agencies
|
$29,087,042 | ||
| 71 | $28,956,745 | |||
| 72 |
The Pasha Group
Top agencies
|
$28,631,147 | ||
| 73 | $27,842,301 | |||
| 74 |
Altus Technical Solutions LLC
Top agencies
|
$24,329,916 | ||
| 75 | $23,150,102 | |||
| 76 |
Cruz Associates Inc.
Top agencies
|
$22,834,997 | ||
| 77 |
Sitemaster Inc.
Top agencies
|
$21,302,926 | ||
| 78 |
Eagle Harbor, LLC
Top agencies
|
$20,498,502 | ||
| 79 |
Pegasus Support Services LLC
|
$19,993,519 | ||
| 80 |
CI2 Aviation, Inc.
Top agencies
|
$19,305,159 | ||
| 81 | $18,971,940 | |||
| 82 | $18,535,155 | |||
| 83 | $18,428,981 | |||
| 84 | $18,424,865 | |||
| 85 |
Adams and Associates Inc.
Top agencies
|
$17,973,519 | ||
| 86 |
Tunista Logistics Solutions LLC
|
$17,131,651 | ||
| 87 | $16,306,450 | |||
| 88 |
Maytag Aircraft LLC
Top agencies
|
$15,842,272 | ||
| 89 |
Katmai Technical Services LLC
|
$15,665,964 | ||
| 90 |
Enviremedial Services, Inc.
Top agencies
|
$14,298,272 | ||
| 91 |
Walsingham Group Inc
Top agencies
|
$13,741,131 | ||
| 92 |
Data Monitor Systems Inc
|
$13,468,805 | ||
| 93 |
Calista Corp
Top agencies
|
$13,435,373 | ||
| 94 |
Emcor Group Inc.
|
$13,296,474 | ||
| 95 | $13,134,439 | |||
| 96 |
Guidehouse Inc.
|
$12,881,596 | ||
| 97 | $12,638,295 | |||
| 98 |
WSP USA Solutions Inc
|
$12,625,397 | ||
| 99 |
Prolog, Inc.
Top agencies
|
$12,170,639 | ||
| 100 |
Commonwealth Scientific and Industrial Research Organisation
Top agencies
|
$11,755,848 |
Show 75 more
100 of 900 contractors listed here. See the rest on GovTribe.
Rankings for the codes under PSC M1
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 $46.6 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 M1 contractors in Aug 2025–Jul 2026?
1. Honeywell International Inc. ($6.14B), 2. Triad National Security LLC ($5.47B), 3. Fluor Corporation ($4.96B), 4. Battelle Memorial Institute ($3.85B), 5. Ut-Battelle LLC ($3.11B), 6. Consolidated Nuclear Security, LLC ($3.08B), 7. Pantexas Deterrence, LLC ($1.69B), 8. Grimes Aerospace Company ($1.51B), 9. The Regents of the University of California ($1.38B), 10. MSM Group North America Inc. ($1.27B).
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