Top 100 Contractors in PSC R425: Engineering and Technical Services, FY2025

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

The top 10 won 30% of FY2025 PSC R425 contract dollars

Ranking facts

Contract obligations
$34,591,649,208 Net of deobligations, by contracts coded PSC R425
Contractors
2,148 Parent companies with an obligation
Largest contractor
Lockheed Martin Corporation $1.39 billion, 3.8% 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
Lockheed Martin Corporation 26 awardees, including Lockheed Martin Services, LLC
Top agencies
$1,393,332,090
Rank history: #3 in FY2021, #2 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2
Northrop Grumman Systems Corporation 34 awardees
Top agencies
$1,337,154,468
Rank history: #4 in FY2021, #6 in FY2022, #4 in FY2023 and #4 in FY2024; up 2 since FY2024.
3
The Aerospace Corporation
Top agencies
$1,248,942,456
Rank history: #5 in FY2021, #4 in FY2022, #3 in FY2023 and #2 in FY2024; down 1 since FY2024.
4
CACI International Inc. 11 awardees, including Caci, Inc. - Federal, Caci Technologies, LLC and Caci Nss, LLC
Top agencies
$1,199,345,527
Rank history: #13 in FY2021, #14 in FY2022, #12 in FY2023 and #6 in FY2024; up 2 since FY2024.
5
Amentum Holdings, Inc. 8 awardees, including Amentum Services, Inc., JT4 LLC and Amentum Technology, Inc.
Top agencies
$1,105,194,655
Rank history: not on the FY2021–FY2024 lists; up 125 since FY2024.
6
Chemonics International, Inc.
Top agencies
$1,082,448,454
Rank history: #1 in FY2021, #1 in FY2022, #5 in FY2023 and #3 in FY2024; down 3 since FY2024.
7
Booz Allen Hamilton Holding Corporation 3 awardees, including Booz Allen Hamilton Inc., Ultra Electronics Advanced Tactical Systems Inc. and Aquilent, Inc.
Top agencies
$1,007,492,921
Rank history: #7 in FY2021, #5 in FY2022, #2 in FY2023 and #5 in FY2024; down 2 since FY2024.
8
RTX Corporation 42 awardees, including Range Generation Next LLC, Raytheon Company and Rockwell Collins, Inc.
Top agencies
$937,413,357
Rank history: #2 in FY2021, #3 in FY2022, #9 in FY2023 and #8 in FY2024; unchanged since FY2024.
9
Leidos Holdings, Inc. 15 awardees, including Leidos, Inc., Dynetics, Inc. and Gibbs & Cox, Inc.
Top agencies
$838,395,287
Rank history: #6 in FY2021, #9 in FY2022, #14 in FY2023 and #9 in FY2024; unchanged since FY2024.
10
BAE Systems 15 awardees, including BAE Systems Land & Armaments L.P., BAE Systems Information and Electronic Systems Integration Inc. and BAE Systems Technology Solutions & Services Inc.
Top agencies
$818,796,340
Rank history: #17 in FY2021, #13 in FY2022, #10 in FY2023 and #14 in FY2024; up 4 since FY2024.
11
Astrion Group, LLC 5 awardees, including Beyond New Horizons, LLC, Oasis Systems, LLC and Axient LLC
Top agencies
$752,295,546
Rank history: not on the FY2021–FY2024 lists; new.
12
The Mitre Corporation 2 awardees
Top agencies
$737,816,793
Rank history: #11 in FY2021, #10 in FY2022, #11 in FY2023 and #10 in FY2024; down 2 since FY2024.
13
General Dynamics Corporation 18 awardees, including General Dynamics Information Technology, Inc., General Dynamics Global Force, LLC and General Dynamics Land Systems Inc.
Top agencies
$737,034,556
Rank history: #10 in FY2021, #8 in FY2022, #7 in FY2023 and #11 in FY2024; down 2 since FY2024.
14
Science Applications International Corporation 2 awardees
Top agencies
$662,472,004
Rank history: #9 in FY2021, #7 in FY2022, #6 in FY2023 and #12 in FY2024; down 2 since FY2024.
15
The Boeing Company 18 awardees, including Boeing Sikorsky Aircraft Support, LLC
Top agencies
$640,889,413
Rank history: #8 in FY2021, #11 in FY2022, #8 in FY2023 and #7 in FY2024; down 8 since FY2024.
16
Parsons Corporation 5 awardees, including Parsons Government Services Inc., Xator LLC and Parsons Government Services International Inc.
Top agencies
$624,991,715
Rank history: #20 in FY2021, #19 in FY2022, #17 in FY2023 and #16 in FY2024; unchanged since FY2024.
17
L3Harris Technologies, Inc. 26 awardees, including L3Harris Technologies Integrated Systems L.P., L3 Technologies, Inc. and L3Harris Forcex, Inc.
Top agencies
$552,759,079
Rank history: #12 in FY2021, #12 in FY2022, #13 in FY2023 and #15 in FY2024; down 2 since FY2024.
18
General Atomics Aeronautical Systems, Inc.
Top agencies
$442,014,505
Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; up 38 since FY2024.
19
Leonardo S.p.A. 7 awardees, including DRS Sustainment Systems, Inc., Laurel Technologies Partnership and DRS Network & Imaging Systems LLC
Top agencies
$406,711,769
Rank history: #37 in FY2021, #36 in FY2022, #20 in FY2023 and #29 in FY2024; up 10 since FY2024.
20
Huntington Ingalls Industries, Inc. 7 awardees, including HII Mission Technologies Corp, HII Technical Solutions Corporation and HII Fleet Support Group LLC
Top agencies
$389,523,608
Rank history: #36 in FY2021, #25 in FY2022, #19 in FY2023 and #17 in FY2024; down 3 since FY2024.
21
Odyssey Systems Consulting Group, Ltd.
Top agencies
$340,828,421
Rank history: #87 in FY2021, not on the FY2022 list, #92 in FY2023 and not on the FY2024 list; up 158 since FY2024.
22
Torch Technologies Inc.
Top agencies
$307,764,811
Rank history: #15 in FY2021, #24 in FY2022, #21 in FY2023 and #24 in FY2024; up 2 since FY2024.
23
Microsoft Corporation
Top agencies
$285,482,260
Rank history: #21 in FY2021, #23 in FY2022, #24 in FY2023 and #19 in FY2024; down 4 since FY2024.
24
Serco Inc
Top agencies
$279,597,312
Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and #26 in FY2024; up 2 since FY2024.
25
Systems Planning and Analysis, Inc. 4 awardees, including Intrepid LLC, Group W Inc. and MCR Federal, LLC
Top agencies
$251,172,187
Rank history: #64 in FY2021, #43 in FY2022, #46 in FY2023 and #41 in FY2024; up 16 since FY2024.
26
KBR Wyle Services LLC 6 awardees, including KBR Services, LLC and Kord Technologies, LLC
Top agencies
$244,862,564
Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; up 6 since FY2024.
27
Arctic Slope Regional Corporation 18 awardees, including Agile Decision Sciences, LLC, Asrc Federal System Solutions LLC and Netcentric Technology, LLC
Top agencies
$239,299,424
Rank history: #29 in FY2021, #29 in FY2022, #38 in FY2023 and #44 in FY2024; up 17 since FY2024.
28
ManTech International Corporation 3 awardees, including Mantech Advanced Systems International, Inc., Tapestry Technologies, Inc. and Unison Software Inc.
Top agencies
$203,490,061
Rank history: #18 in FY2021, #16 in FY2022, #30 in FY2023 and #36 in FY2024; up 8 since FY2024.
29
Scientific Research Corporation
Top agencies
$203,041,090
Rank history: not on the FY2021–FY2022 lists, #58 in FY2023 and #40 in FY2024; up 11 since FY2024.
30
Intuitive Research and Technology Corporation 2 awardees
Top agencies
$178,981,011
Rank history: #33 in FY2021, #58 in FY2022, #54 in FY2023 and #47 in FY2024; up 17 since FY2024.
31
Ukpeagvik Inupiat Corporation 8 awardees, including Bowhead Program Management & Operations, LLC, Bowhead Enterprise, Science and Technology, LLC and Bowhead Weapons Development Solutions LLC
Top agencies
$168,013,651
Rank history: not on the FY2021–FY2024 lists; new.
32
Noblis, Inc. 2 awardees, including Noblis MSD LLC
Top agencies
$163,515,660
Rank history: #42 in FY2021, #33 in FY2022, #33 in FY2023 and #52 in FY2024; up 20 since FY2024.
33
SRC Inc. 2 awardees
Top agencies
$160,890,775
Rank history: #55 in FY2021, #48 in FY2022, #31 in FY2023 and #25 in FY2024; down 8 since FY2024.
34
Sev1Tech, LLC
Top agencies
$160,145,204
Rank history: #39 in FY2021, #44 in FY2022, #45 in FY2023 and #53 in FY2024; up 19 since FY2024.
35
Path
Top agencies
$157,716,684
Rank history: not on the FY2021–FY2024 lists; up 199 since FY2024.
36
ABT Global LLC
Top agencies
$149,036,232
Rank history: #25 in FY2021, #31 in FY2022, #42 in FY2023 and #38 in FY2024; up 2 since FY2024.
37
Accenture Federal Services LLC 2 awardees, including Cognosante MVH LLC
Top agencies
$146,878,849
Rank history: not on the FY2021–FY2023 lists and #34 in FY2024; down 3 since FY2024.
38
Trace Systems, Inc.
Top agencies
$146,158,457
Rank history: not on the FY2021–FY2024 lists; up 201 since FY2024.
39
Tetra Tech, Inc. 12 awardees, including LS Technologies LLC, Halvik LLC and Management Systems International, Inc.
Top agencies
$139,190,485
Rank history: #85 in FY2021, #95 in FY2022, #72 in FY2023 and #46 in FY2024; up 7 since FY2024.
40
Oshkosh Corporation Through Oshkosh Defense LLC
Top agencies
$137,248,406
Rank history: not on the FY2021–FY2024 lists; new.
41
Credence Management Solutions Limited Liability Company
Top agencies
$135,939,827
Rank history: #71 in FY2021, #41 in FY2022, #29 in FY2023 and #31 in FY2024; down 10 since FY2024.
42
Bristol Bay Native Corporation 8 awardees, including STS Systems Defense LLC, STS Government Solutions, LLC and Aerostar Environmental, LLC
Top agencies
$134,097,645
Rank history: not on the FY2021–FY2024 lists; new.
43
V2X, Inc. 5 awardees, including V2X Aerospace LLC, V2X Systems LLC and Vertex Modernization and Sustainment LLC
Top agencies
$132,352,233
Rank history: not on the FY2021–FY2023 lists and #57 in FY2024; up 14 since FY2024.
44
P E Systems, Inc.
Top agencies
$127,717,309
Rank history: #59 in FY2021, #92 in FY2022, #71 in FY2023 and #78 in FY2024; up 34 since FY2024.
45
CQ JV, LLC
Top agencies
$125,990,723
Rank history: not on the FY2021 list, #54 in FY2022, #62 in FY2023 and #64 in FY2024; up 19 since FY2024.
46
Mag DS Corp 2 awardees
Top agencies
$125,394,396
Rank history: #27 in FY2021, #20 in FY2022, #28 in FY2023 and not on the FY2024 list; up 103 since FY2024.
47
Kbr, Inc. 2 awardees, including Linquest Corporation
Top agencies
$123,905,126
Rank history: #24 in FY2021, #26 in FY2022, #26 in FY2023 and #83 in FY2024; up 36 since FY2024.
48
Applied Research Associates, Inc.
Top agencies
$114,526,956
Rank history: #60 in FY2021, #39 in FY2022, #34 in FY2023 and #50 in FY2024; up 2 since FY2024.
49
Deloitte 2 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP
Top agencies
$110,878,422
Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; down 14 since FY2024.
50
Anduril Industries Inc. 3 awardees, including Area-I, LLC
Top agencies
$106,580,532
Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and #37 in FY2024; down 13 since FY2024.
51
Peraton Inc. 3 awardees, including Peraton Enterprise Solutions LLC and Dhpc Technologies, Inc.
Top agencies
$101,048,548
Rank history: not on the FY2021–FY2023 lists and #62 in FY2024; up 11 since FY2024.
52
Bell Boeing Joint Project Office
Top agencies
$95,700,530
Rank history: not on the FY2021–FY2023 lists and #45 in FY2024; down 7 since FY2024.
53
Georgia TECH Research Corp Through Georgia TECH Applied Research Corp
Top agencies
$95,534,495
Rank history: #47 in FY2021, #40 in FY2022, #53 in FY2023 and not on the FY2024 list; returned.
54
QED Systems LLC
Top agencies
$95,055,376
Rank history: #51 in FY2021, #66 in FY2022, #50 in FY2023 and not on the FY2024 list; up 60 since FY2024.
55
Aerodyne-Sgt Engineering Services, LLC
Top agencies
$92,786,066
Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and #55 in FY2024; unchanged since FY2024.
56
Consortium Management Group, Inc.
Top agencies
$91,422,432
Rank history: not on the FY2021 list, #70 in FY2022, #63 in FY2023 and #58 in FY2024; up 2 since FY2024.
57
DCS Corporation
Top agencies
$90,322,018
Rank history: #28 in FY2021, #28 in FY2022, #27 in FY2023 and #54 in FY2024; down 3 since FY2024.
58
Delphinus Engineering LLC
Top agencies
$89,789,451
Rank history: #53 in FY2021, #50 in FY2022, #87 in FY2023 and #84 in FY2024; up 26 since FY2024.
59
CORE4CE LLC
Top agencies
$88,075,412
Rank history: not on the FY2021–FY2023 lists and #59 in FY2024; unchanged since FY2024.
60
Sigmatech Inc.
Top agencies
$87,819,276
Rank history: not on the FY2021–FY2023 lists and #77 in FY2024; up 17 since FY2024.
61
Energy Technology Alliance LLC
Top agencies
$85,739,358
Rank history: not on the FY2021–FY2023 lists and #48 in FY2024; down 13 since FY2024.
62
The Johns Hopkins University Applied Physics Laboratory LLC
Top agencies
$84,734,008
Rank history: not on the FY2021–FY2024 lists; new.
63
Intuitive Machines, LLC Through Space Network Solutions LLC
Top agencies
$83,683,725
Rank history: not on the FY2021–FY2024 lists; new.
64
Karsun Solutions LLC
Top agencies
$81,135,882
Rank history: #63 in FY2021, #67 in FY2022, #67 in FY2023 and #80 in FY2024; up 16 since FY2024.
65
Mayvin, Inc.
Top agencies
$80,611,205
Rank history: not on the FY2021 list, #81 in FY2022, #83 in FY2023 and #89 in FY2024; up 24 since FY2024.
66
Colsa Corp
Top agencies
$80,549,673
Rank history: #22 in FY2021, #45 in FY2022, #61 in FY2023 and #63 in FY2024; down 3 since FY2024.
67
Raytheon / Lockheed Martin Javelin JV
Top agencies
$74,822,427
Rank history: not on the FY2021–FY2024 lists; up 142 since FY2024.
68
Palantir Technologies Inc. 2 awardees, including Palantir USG Inc.
Top agencies
$73,501,528
Rank history: not on the FY2021–FY2023 lists and #97 in FY2024; up 29 since FY2024.
69
Gryphon Technologies L.C.
Top agencies
$71,381,564
Rank history: not on the FY2021–FY2023 lists and #60 in FY2024; down 9 since FY2024.
70
Sayres and Associates LLC 3 awardees, including Global Systems Technologies, LLC
Top agencies
$71,234,428
Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 26 since FY2024.
71
Reliability & Performance Technologies, LLC
Top agencies
$70,399,571
Rank history: not on the FY2021–FY2024 lists; up 60 since FY2024.
72
Cherokee Nation 8 awardees, including Cherokee Nation Strategic Programs, L.L.C., Cherokee Nation Operational Solutions, L.L.C. and Cherokee Nation Government Solutions, L.L.C.
Top agencies
$70,292,029
Rank history: #88 in FY2021 and not on the FY2022–FY2024 lists; up 311 since FY2024.
73
Sigma Defense Systems LLC 2 awardees, including Juno Technologies, LLC
Top agencies
$70,014,692
Rank history: not on the FY2021–FY2022 lists, #57 in FY2023 and #87 in FY2024; up 14 since FY2024.
74
Vsolvit LLC
Top agencies
$68,990,889
Rank history: not on the FY2021–FY2024 lists; up 31 since FY2024.
75
Janus Research Group, LLC
Top agencies
$68,903,705
Rank history: #89 in FY2021, #90 in FY2022 and not on the FY2023–FY2024 lists; up 43 since FY2024.
76
Simventions Inc.
Top agencies
$68,255,968
Rank history: #99 in FY2021, #83 in FY2022, #85 in FY2023 and #85 in FY2024; up 9 since FY2024.
77
BWX Technologies, Inc. 2 awardees, including Bwxt Enrichment Operations, LLC
Top agencies
$67,000,000
Rank history: not on the FY2021–FY2024 lists; new.
78
Teledyne Flir Unmanned Ground Systems Inc 5 awardees, including Teledyne Brown Engineering, Inc., Teledyne Flir Defense, LLC and Teledyne Reson Inc.
Top agencies
$66,745,932
Rank history: #81 in FY2021, #94 in FY2022, #68 in FY2023 and #82 in FY2024; up 4 since FY2024.
79
Systems Application & Technologies Inc. 2 awardees, including Southwest Range Services LLC
Top agencies
$66,562,838
Rank history: not on the FY2021–FY2024 lists; new.
80
Sumaria Systems, LLC
Top agencies
$66,396,374
Rank history: not on the FY2021 list, #88 in FY2022, #94 in FY2023 and not on the FY2024 list; up 49 since FY2024.
81
Agile Defense, LLC 2 awardees
Top agencies
$66,163,899
Rank history: not on the FY2021–FY2024 lists; new.
82
Falconwood
Top agencies
$66,013,820
Rank history: #84 in FY2021, #76 in FY2022, #76 in FY2023 and #91 in FY2024; up 9 since FY2024.
83
Resource Management Concepts, Inc.
Top agencies
$65,930,145
Rank history: not on the FY2021–FY2024 lists; up 54 since FY2024.
84
Utah State University 2 awardees, including Utah State University Space Dynamics Laboratory
Top agencies
$65,447,967
Rank history: not on the FY2021–FY2024 lists; up 385 since FY2024.
85
MP Solutions, LLC
Top agencies
$65,324,430
Rank history: not on the FY2021 list, #69 in FY2022, #82 in FY2023 and #66 in FY2024; down 19 since FY2024.
86
Fairwinds Technologies LLC
Top agencies
$64,822,391
Rank history: not on the FY2021–FY2024 lists; new.
87
Rsi-Quantitech JV LLC
Top agencies
$64,422,632
Rank history: not on the FY2021–FY2023 lists and #95 in FY2024; up 8 since FY2024.
88
American Systems Corporation 2 awardees
Top agencies
$64,035,996
Rank history: #57 in FY2021, #78 in FY2022, #59 in FY2023 and #70 in FY2024; down 18 since FY2024.
89
Mantech SRS Technologies, Inc.
Top agencies
$63,492,134
Rank history: not on the FY2021–FY2024 lists; new.
90
Indus Technology Inc.
Top agencies
$62,625,218
Rank history: #96 in FY2021, #99 in FY2022, #90 in FY2023 and #88 in FY2024; down 2 since FY2024.
91
Aviation Systems Engineering Company Inc.
Top agencies
$62,592,105
Rank history: not on the FY2021–FY2023 lists and #93 in FY2024; up 2 since FY2024.
92
Valiant Global Defense Services Inc.
Top agencies
$62,106,681
Rank history: not on the FY2021–FY2024 lists; up 164 since FY2024.
93
Qinetiq Inc. 3 awardees, including Avantus Federal LLC
Top agencies
$61,114,702
Rank history: not on the FY2021–FY2024 lists; new.
94
Modern Technology Solutions, Inc.
Top agencies
$60,406,901
Rank history: #62 in FY2021, #68 in FY2022, #93 in FY2023 and not on the FY2024 list; up 28 since FY2024.
95
Honeywell International Inc. 8 awardees, including Vindicator Technologies, Inc.
Top agencies
$60,376,533
Rank history: not on the FY2021 list, #86 in FY2022, #66 in FY2023 and #81 in FY2024; down 14 since FY2024.
96
T-Solutions, Inc.
Top agencies
$59,569,873
Rank history: #79 in FY2021 and not on the FY2022–FY2024 lists; up 80 since FY2024.
97
Peerless Technologies Corporation
Top agencies
$55,511,634
Rank history: #95 in FY2021 and not on the FY2022–FY2024 lists; up 39 since FY2024.
98
Mitchell Vantage Systems LLC
Top agencies
$55,485,370
Rank history: not on the FY2021–FY2022 lists, #55 in FY2023 and #79 in FY2024; down 19 since FY2024.
99
Data Systems Analysts Inc. 2 awardees
Top agencies
$54,259,297
Rank history: not on the FY2021–FY2023 lists and #99 in FY2024; unchanged since FY2024.
100
NOU Systems Inc. Through Ntsi LLC
Top agencies
$53,890,818
Rank history: not on the FY2021–FY2024 lists; new.
Show 75 more

100 of 2,148 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 $36.6 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 R425 contractors in FY2025?

1. Lockheed Martin Corporation ($1.39B), 2. Northrop Grumman Systems Corporation ($1.34B), 3. The Aerospace Corporation ($1.25B), 4. CACI International Inc. ($1.2B), 5. Amentum Holdings, Inc. ($1.11B), 6. Chemonics International, Inc. ($1.08B), 7. Booz Allen Hamilton Holding Corporation ($1.01B), 8. RTX Corporation ($937M), 9. Leidos Holdings, Inc. ($838M), 10. BAE Systems ($819M).

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