Top 100 Contractors in PSC R499: Other Professional Services, FY2025

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 32% of FY2025 PSC R499 contract dollars

Ranking facts

Contract obligations
$26,248,478,501 Net of deobligations, by contracts coded PSC R499
Contractors
5,473 Parent companies with an obligation
Largest contractor
The Boeing Company $1.78 billion, 6.2% 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
The Boeing Company 8 awardees, including Boeing Sikorsky Aircraft Support, LLC and Jeppesen Foreflight, Inc.
Top agencies
$1,782,401,846
Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2024; up 1 since FY2024.
2
Booz Allen Hamilton Holding Corporation 6 awardees, including Booz Allen Hamilton Inc. and Thunderyard Liberty JV LLC
Top agencies
$1,725,147,687
Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; down 1 since FY2024.
3
Savannah River Mission Completion, LLC
Top agencies
$1,062,510,600
Rank history: not on the FY2021 list, #4 in FY2022, #4 in FY2023 and #5 in FY2024; up 2 since FY2024.
4
Maximus Federal Services, Inc.
Top agencies
$946,267,525
Rank history: not on the FY2021–FY2023 lists and #6 in FY2024; up 2 since FY2024.
5
General Dynamics Corporation 10 awardees, including General Dynamics Information Technology, Inc., General Dynamics Land Systems Inc. and General Dynamics One Source LLC
Top agencies
$746,759,111
Rank history: #6 in FY2021, #11 in FY2022, #5 in FY2023 and #3 in FY2024; down 2 since FY2024.
6
Deloitte 3 awardees, including Deloitte Consulting LLP, Deloitte & Touche LLP and Deloitte Financial Advisory Services LLP
Top agencies
$737,927,283
Rank history: not on the FY2021–FY2023 lists and #7 in FY2024; up 1 since FY2024.
7
Huntington Ingalls Industries, Inc. 2 awardees, including HII Mission Technologies Corp
Top agencies
$668,426,669
Rank history: #89 in FY2021, #18 in FY2022, #10 in FY2023 and #8 in FY2024; up 1 since FY2024.
8
Science Applications International Corporation
Top agencies
$541,020,700
Rank history: #11 in FY2021, #7 in FY2022, #6 in FY2023 and #9 in FY2024; up 1 since FY2024.
9
CACI International Inc. 8 awardees, including Caci Nss, LLC, Caci, Inc. - Federal and Caci, LLC - Commercial
Top agencies
$495,713,308
Rank history: #8 in FY2021, #6 in FY2022, #8 in FY2023 and #10 in FY2024; up 1 since FY2024.
10
Govcio, LLC 3 awardees, including Salient Crgt, Inc. and Soldierpoint Digital Health, LLC
Top agencies
$494,756,915
Rank history: not on the FY2021 list, #36 in FY2022, #62 in FY2023 and #60 in FY2024; up 50 since FY2024.
11
Peraton Inc. 3 awardees, including Peraton Enterprise Solutions LLC and Safeguard Services LLC
Top agencies
$350,510,079
Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; up 5 since FY2024.
12
Leidos Holdings, Inc. 11 awardees, including Leidos, Inc., Hanford Mission Integration Solutions, LLC and 1901 Group, LLC
Top agencies
$338,949,715
Rank history: #62 in FY2021, #54 in FY2022, #20 in FY2023 and #13 in FY2024; up 1 since FY2024.
13
V2X, Inc. 3 awardees, including V2X Aerospace LLC, V2X Systems LLC and Advantor Systems II LLC
Top agencies
$305,434,849
Rank history: not on the FY2021–FY2024 lists; up 110 since FY2024.
14
Accenture Federal Services LLC 4 awardees, including Cognosante MVH LLC and Cognosante, LLC
Top agencies
$304,160,951
Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; up 5 since FY2024.
15
Guidehouse Inc. 8 awardees, including Guidehouse Digital LLC, Peraton Technology Services Inc. and Aptim Federal Services, LLC
Top agencies
$298,128,921
Rank history: not on the FY2021–FY2023 lists and #12 in FY2024; down 3 since FY2024.
16
Olin Corporation Through Olin Winchester LLC
Top agencies
$273,456,828
Rank history: not on the FY2021–FY2023 lists and #4 in FY2024; down 12 since FY2024.
17
Clark Construction Group LLC
Top agencies
$262,369,041
Rank history: not on the FY2021–FY2024 lists; up 174 since FY2024.
18
Serco Inc 2 awardees
Top agencies
$256,925,385
Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; down 1 since FY2024.
19
The Boston Consulting Group Inc. 2 awardees, including BCG Federal Corp.
Top agencies
$242,056,663
Rank history: not on the FY2021–FY2024 lists; new.
20
Family Health International
Top agencies
$222,282,326
Rank history: not on the FY2021–FY2024 lists; up 98 since FY2024.
21
Parsons Corporation 4 awardees, including Parsons Government Services Inc., Ptsi Managed Services Inc. and Xator LLC
Top agencies
$210,796,137
Rank history: #17 in FY2021, #17 in FY2022, #12 in FY2023 and #15 in FY2024; down 6 since FY2024.
22
LMI Consulting, LLC
Top agencies
$209,370,764
Rank history: not on the FY2021 list, #26 in FY2022, #25 in FY2023 and #20 in FY2024; down 2 since FY2024.
23
Amentum Holdings, Inc. 9 awardees, including Amentum Services, Inc., Amentum Technology, Inc. and Centra Technology, Inc.
Top agencies
$204,983,587
Rank history: not on the FY2021–FY2023 lists and #85 in FY2024; up 62 since FY2024.
24
The Chenega Corporation 21 awardees, including Chenega Global Protection, LLC, C2 Alaska, LLC and Chenega Enterprise Systems & Solutions, LLC
Top agencies
$191,548,816
Rank history: #67 in FY2021, #69 in FY2022, #58 in FY2023 and not on the FY2024 list; up 448 since FY2024.
25
KBR Wyle Services LLC 6 awardees, including KBR Services, LLC
Top agencies
$184,264,243
Rank history: not on the FY2021–FY2023 lists and #29 in FY2024; up 4 since FY2024.
26
Ernst & Young LLP 2 awardees
Top agencies
$165,418,695
Rank history: #44 in FY2021, #37 in FY2022, not on the FY2023 list and #23 in FY2024; down 3 since FY2024.
27
Cherokee Nation 13 awardees, including Criterion Systems, L.L.C., Cherokee Insights LLC and Cherokee Nation Strategic Programs, L.L.C.
Top agencies
$161,944,362
Rank history: #63 in FY2021, #64 in FY2022 and not on the FY2023–FY2024 lists; returned.
28
Systems Planning and Analysis, Inc. 5 awardees, including Schafer Government Services, LLC, Prkk LLC and Group W Inc.
Top agencies
$161,909,011
Rank history: #94 in FY2021, #83 in FY2022, #86 in FY2023 and not on the FY2024 list; up 86 since FY2024.
29
Tetra Tech, Inc. 13 awardees, including Halvik LLC, Tetra TECH ES, Inc. and Bluewater Federal Solutions, Inc.
Top agencies
$160,484,832
Rank history: #39 in FY2021, #27 in FY2022, #36 in FY2023 and #36 in FY2024; up 7 since FY2024.
30
International Business Machines Corporation 5 awardees
Top agencies
$143,157,759
Rank history: #30 in FY2021, #16 in FY2022, #30 in FY2023 and #30 in FY2024; unchanged since FY2024.
31
RTX Corporation 10 awardees, including Raytheon Company, Goodrich Corporation and V2X Aerospace LLC
Top agencies
$136,752,967
Rank history: not on the FY2021–FY2023 lists and #33 in FY2024; up 2 since FY2024.
32
Acuity International LLC 3 awardees, including Sallyport Global Holdings Inc. and Acuity Inc.
Top agencies
$134,742,521
Rank history: not on the FY2021–FY2024 lists; new.
33
Carahsoft Technology Corp
Top agencies
$134,362,446
Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #22 in FY2024; down 11 since FY2024.
34
ManTech International Corporation 4 awardees, including Mantech Advanced Systems International, Inc., Unison Software Inc. and Unison Cost Engineering LLC
Top agencies
$123,757,501
Rank history: not on the FY2021–FY2024 lists; up 85 since FY2024.
35
DAI Global LLC
Top agencies
$122,078,594
Rank history: #24 in FY2021, #14 in FY2022, #16 in FY2023 and #14 in FY2024; down 21 since FY2024.
36
Koniag, Inc. 14 awardees, including Koniag Data Solutions LLC, Kadiak LLC and Koniag Professional Services, LLC
Top agencies
$121,834,021
Rank history: #79 in FY2021, #55 in FY2022, #53 in FY2023 and not on the FY2024 list; up 265 since FY2024.
37
Kelly Services, Inc.
Top agencies
$116,515,480
Rank history: not on the FY2021–FY2023 lists and #39 in FY2024; up 2 since FY2024.
38
Strategic Analysis, Inc.
Top agencies
$110,468,683
Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #55 in FY2024; up 17 since FY2024.
39
Axle Informatics, LLC
Top agencies
$109,651,449
Rank history: #64 in FY2021, #46 in FY2022, #39 in FY2023 and #47 in FY2024; up 8 since FY2024.
40
Arctic Slope Regional Corporation 13 awardees, including Agile Decision Sciences, LLC, Asrc Federal Professional Services, LLC and Broadleaf, Inc.
Top agencies
$105,926,077
Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; up 2 since FY2024.
41
Qlarant Integrity Solutions LLC
Top agencies
$98,267,574
Rank history: not on the FY2021–FY2024 lists; up 102 since FY2024.
42
Research Triangle Institute
Top agencies
$93,350,431
Rank history: #20 in FY2021, #28 in FY2022, #26 in FY2023 and #18 in FY2024; down 24 since FY2024.
43
Deep Mile Networks LLC
Top agencies
$87,876,971
Rank history: not on the FY2021–FY2022 lists, #42 in FY2023 and #54 in FY2024; up 11 since FY2024.
44
The GEO Group, Inc.
Top agencies
$86,947,550
Rank history: #34 in FY2021, #32 in FY2022, #38 in FY2023 and #49 in FY2024; up 5 since FY2024.
45
Bristol Bay Native Corporation 20 awardees, including Eagle Integrated Services, LLC, Tekpro Support Services, LLC and Aerostar SES LLC
Top agencies
$84,593,926
Rank history: not on the FY2021–FY2024 lists; new.
46
Lockheed Martin Corporation 9 awardees, including Lockheed Martin Services, LLC and Lockheed Martin Integrated Systems, LLC
Top agencies
$83,767,672
Rank history: #46 in FY2021, #30 in FY2022, #47 in FY2023 and #38 in FY2024; down 8 since FY2024.
47
Asgn Incorporated 2 awardees, including ECS Federal, LLC and Sewp Solutions LLC
Top agencies
$82,674,575
Rank history: not on the FY2021–FY2024 lists; up 80 since FY2024.
48
Black Canyon Consulting LLC
Top agencies
$79,706,293
Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and #67 in FY2024; up 19 since FY2024.
49
ICF International Inc. 3 awardees, including ICF Incorporated, L.L.C.
Top agencies
$75,745,046
Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 1 since FY2024.
50
Apogee Engineering, LLC
Top agencies
$73,204,227
Rank history: #56 in FY2021, #71 in FY2022, not on the FY2023 list and #77 in FY2024; up 27 since FY2024.
51
Tecolote Research, Inc.
Top agencies
$69,525,036
Rank history: #88 in FY2021, #80 in FY2022 and not on the FY2023–FY2024 lists; up 61 since FY2024.
52
Chemonics International, Inc.
Top agencies
$68,972,700
Rank history: #41 in FY2021, #40 in FY2022, #27 in FY2023 and #24 in FY2024; down 28 since FY2024.
53
Miracle Systems LLC
Top agencies
$67,156,126
Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #80 in FY2024; up 27 since FY2024.
54
Revolutional, LLC Through Maveris LLC
Top agencies
$62,823,748
Rank history: not on the FY2021–FY2024 lists; new.
55
Astrion Group, LLC 4 awardees, including Axient LLC and Oasis Systems, LLC
Top agencies
$61,599,416
Rank history: not on the FY2021–FY2024 lists; up 55 since FY2024.
56
Nana Regional Corporation, Inc. 9 awardees, including Rivertech LLC, Systems Intelligence, LLC and Akima Global Logistics, LLC
Top agencies
$61,529,628
Rank history: not on the FY2021–FY2024 lists; new.
57
Goldbelt, Incorporated 10 awardees, including Goldbelt Professional Services, LLC, Nisga'a Ciops LLC and Goldbelt C6, LLC
Top agencies
$61,348,210
Rank history: #91 in FY2021, #77 in FY2022, #84 in FY2023 and not on the FY2024 list; up 377 since FY2024.
58
Johns Hopkins University 4 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC, The Johns Hopkins Health System Corporation and Johns Hopkins Bayview Medical Center, Inc.
Top agencies
$60,907,883
Rank history: not on the FY2021–FY2024 lists; new.
59
Acumen LLC
Top agencies
$60,097,619
Rank history: #50 in FY2021, #56 in FY2022, #54 in FY2023 and #57 in FY2024; down 2 since FY2024.
60
Tactica Solutions LLC
Top agencies
$59,993,182
Rank history: not on the FY2021–FY2024 lists; new.
61
Kpmg LLP
Top agencies
$58,961,931
Rank history: not on the FY2021–FY2023 lists and #41 in FY2024; down 20 since FY2024.
62
CGI Federal Inc. 3 awardees, including Sehlke Consulting LLC
Top agencies
$58,309,415
Rank history: not on the FY2021–FY2023 lists and #65 in FY2024; up 3 since FY2024.
63
Analytic Services Inc. 3 awardees, including Advanced Technology International and Techconnect LLC
Top agencies
$57,762,808
Rank history: not on the FY2021 list, #90 in FY2022, #79 in FY2023 and #71 in FY2024; up 8 since FY2024.
64
Valiant Global Defense Services Inc.
Top agencies
$57,210,946
Rank history: not on the FY2021–FY2024 lists; up 139 since FY2024.
65
Great Hill Solutions, LLC
Top agencies
$56,351,578
Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #68 in FY2024; up 3 since FY2024.
66
Equifax Inc. Through Equifax Workforce Solutions LLC
Top agencies
$51,844,665
Rank history: not on the FY2021–FY2024 lists; new.
67
System High Corporation
Top agencies
$50,500,526
Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #88 in FY2024; up 21 since FY2024.
68
Chickasaw Nation 10 awardees, including Chickasaw Aerospace, LLC, Technology Trends Group, LLC and Digitalibiz, LLC
Top agencies
$50,344,157
Rank history: not on the FY2021–FY2024 lists; up 288 since FY2024.
69
Mele Associates Inc.
Top agencies
$49,487,727
Rank history: not on the FY2021 list, #95 in FY2022 and not on the FY2023–FY2024 lists; up 61 since FY2024.
70
Delta Solutions & Strategies LLC
Top agencies
$49,054,227
Rank history: not on the FY2021–FY2023 lists and #94 in FY2024; up 24 since FY2024.
71
Mckinsey & Company, Inc. Washington D.c.
Top agencies
$48,229,308
Rank history: not on the FY2021–FY2024 lists; new.
72
Concept Solutions LLC
Top agencies
$46,880,610
Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and #98 in FY2024; up 26 since FY2024.
73
Cbeyondata LLC
Top agencies
$45,539,119
Rank history: not on the FY2021–FY2024 lists; up 373 since FY2024.
74
Calibre Systems Inc.
Top agencies
$44,487,470
Rank history: #60 in FY2021, #63 in FY2022, #65 in FY2023 and #73 in FY2024; down 1 since FY2024.
75
Celeen LLC
Top agencies
$43,896,996
Rank history: not on the FY2021–FY2023 lists and #93 in FY2024; up 18 since FY2024.
76
Salas O'brien, Inc. 3 awardees, including Techsource, LLC and K2 Audio, LLC
Top agencies
$42,795,243
Rank history: not on the FY2021–FY2024 lists; new.
77
Threat Tec, LLC
Top agencies
$41,738,776
Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and not on the FY2024 list; up 27 since FY2024.
78
Magellan Federal Inc.
Top agencies
$41,687,687
Rank history: not on the FY2021–FY2024 lists; up 60 since FY2024.
79
Nakupuna Consulting LLC
Top agencies
$39,649,826
Rank history: not on the FY2021–FY2024 lists; up 93 since FY2024.
80
Endyna, Inc.
Top agencies
$39,428,674
Rank history: not on the FY2021–FY2024 lists; up 35 since FY2024.
81
Plowshare Group Inc
Top agencies
$39,000,000
Rank history: #43 in FY2021, #48 in FY2022, #43 in FY2023 and #58 in FY2024; down 23 since FY2024.
82
Gemini Industries Inc.
Top agencies
$38,995,123
Rank history: not on the FY2021–FY2024 lists; up 199 since FY2024.
83
Oak Ridge Associated Universities, Incorporated
Top agencies
$38,969,650
Rank history: #75 in FY2021, #68 in FY2022, #77 in FY2023 and #86 in FY2024; up 3 since FY2024.
84
Choctaw Premier Services LLC
Top agencies
$38,680,044
Rank history: not on the FY2021–FY2024 lists; new.
85
WSP USA Environment & Infrastructure Inc.
Top agencies
$38,552,069
Rank history: not on the FY2021–FY2024 lists; new.
86
Securitas Critical Infrastructure Services Inc. Through Paragon Systems Inc.
Top agencies
$38,540,774
Rank history: not on the FY2021–FY2024 lists; up 101 since FY2024.
87
Gap Solutions, Inc. 3 awardees, including Keylogic, LLC and Keylogic Associates, Inc.
Top agencies
$37,926,829
Rank history: not on the FY2021–FY2024 lists; up 79 since FY2024.
88
Digiflight Incorporated
Top agencies
$37,853,441
Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2024 list; up 214 since FY2024.
89
Coventbridge (USA) LLC
Top agencies
$37,342,124
Rank history: not on the FY2021–FY2024 lists; up 50 since FY2024.
90
Augustine Consulting Inc.
Top agencies
$36,850,924
Rank history: not on the FY2021–FY2024 lists; new.
91
Sigmatech Inc. 2 awardees
Top agencies
$36,813,541
Rank history: not on the FY2021–FY2024 lists; up 72 since FY2024.
92
Credence Dynamo Solutions LLC
Top agencies
$36,580,285
Rank history: not on the FY2021–FY2024 lists; up 124 since FY2024.
93
Poplicus Incorporated
Top agencies
$36,250,000
Rank history: not on the FY2021–FY2022 lists, #85 in FY2023 and #44 in FY2024; down 49 since FY2024.
94
Riverside Research Institute
Top agencies
$36,202,612
Rank history: not on the FY2021–FY2024 lists; new.
95
PAL Technologies Inc
Top agencies
$36,053,974
Rank history: not on the FY2021–FY2024 lists; new.
96
Aptive HTG LLC
Top agencies
$36,011,541
Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and not on the FY2024 list; up 30 since FY2024.
97
Index Analytics LLC
Top agencies
$35,407,030
Rank history: not on the FY2021–FY2024 lists; up 147 since FY2024.
98
Ameresco Inc. 3 awardees, including Ameresco Select, Inc. and CMI Management, LLC
Top agencies
$35,269,751
Rank history: not on the FY2021–FY2024 lists; up 77 since FY2024.
99
Andrew Morgan, LLC
Top agencies
$35,162,340
Rank history: not on the FY2021–FY2024 lists; up 208 since FY2024.
100
Plateau Software, Inc.
Top agencies
$35,100,024
Rank history: not on the FY2021–FY2024 lists; up 121 since FY2024.
Show 75 more

100 of 5,473 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 $28.6 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.
  • Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
  • Rank changes compare with FY2024. "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. The step from FY2024 takes the color of the rank change beside it.
  • 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 R499 contractors in FY2025?

1. The Boeing Company ($1.78B), 2. Booz Allen Hamilton Holding Corporation ($1.73B), 3. Savannah River Mission Completion, LLC ($1.06B), 4. Maximus Federal Services, Inc. ($946M), 5. General Dynamics Corporation ($747M), 6. Deloitte ($738M), 7. Huntington Ingalls Industries, Inc. ($668M), 8. Science Applications International Corporation ($541M), 9. CACI International Inc. ($496M), 10. Govcio, LLC ($495M).

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