Top 100 Department of Transportation Contractors, FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	L3Harris Technologies, Inc. 5 awardees, including Harris Corporation and L3Harris Maritime Power & Energy Solutions, Inc. Top NAICS codes 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 541330 Engineering Services 541512 Computer Systems Design Services	$929,691,897	10.4%	Rank history: #2 in FY2021, #3 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Leidos Holdings, Inc. 8 awardees, including Leidos, Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 488111 Air Traffic Control 541512 Computer Systems Design Services	$351,289,031	3.9%	Rank history: #3 in FY2021, #1 in FY2022, #2 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	Science Applications International Corporation 4 awardees Top NAICS codes 541513 Computer Facilities Management Services 541330 Engineering Services 541512 Computer Systems Design Services	$245,952,506	2.8%	Rank history: #4 in FY2021, #4 in FY2022, #4 in FY2023 and #4 in FY2024; up 1 since FY2024.
4	RTX Corporation 11 awardees, including Raytheon Company, Arinc Incorporated and Rockwell Collins, Inc. Top NAICS codes 541330 Engineering Services 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 541519 Other Computer Related Services	$240,216,729	2.7%	Rank history: #5 in FY2021, #5 in FY2022, #5 in FY2023 and #5 in FY2024; up 1 since FY2024.
5	CDW Government LLC 2 awardees Top NAICS codes 541512 Computer Systems Design Services 334111 Electronic Computer Manufacturing 513210 Software Publishers	$181,375,621	2.0%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; up 4 since FY2024.
6	Tetra Tech, Inc. 9 awardees, including LS Technologies LLC, Advanced Management Technology, Inc. and Halvik LLC Top NAICS codes 541330 Engineering Services 541511 Custom Computer Programming Services 541990 All Other Professional, Scientific, and Technical Services	$171,948,626	1.9%	Rank history: #19 in FY2021, #17 in FY2022, #26 in FY2023 and #10 in FY2024; up 4 since FY2024.
7	General Dynamics Corporation 7 awardees, including General Dynamics Information Technology, Inc., General Dynamics Mission Systems, Inc. and Metro Machine Corp. Top NAICS codes 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 811213 Communication Equipment Repair and Maintenance	$162,072,071	1.8%	Rank history: #8 in FY2021, #11 in FY2022, #8 in FY2023 and #6 in FY2024; down 1 since FY2024.
8	The Mitre Corporation Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$159,365,590	1.8%	Rank history: #7 in FY2021, #9 in FY2022, #6 in FY2023 and #7 in FY2024; down 1 since FY2024.
9	Frequentis Usa, Inc. Top NAICS codes 334210 Telephone Apparatus Manufacturing 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 811213 Communication Equipment Repair and Maintenance	$156,029,025	1.8%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2024; up 35 since FY2024.
10	Textron Inc. 3 awardees, including Textron Aviation Inc. and Bell Textron Inc. Top NAICS codes 336411 Aircraft Manufacturing 488190 Other Support Activities for Air Transportation 336413 Other Aircraft Parts and Auxiliary Equipment Manufacturing	$147,651,893	1.7%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023 and #25 in FY2024; up 15 since FY2024.
11	Indra Air Traffic, Inc. Top NAICS codes 334220 Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$144,356,048	1.6%	Rank history: not on the FY2021–FY2024 lists; up 125 since FY2024.
12	Walsh Federal LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$138,996,266	1.6%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2024; up 17 since FY2024.
13	Parsons Corporation 2 awardees, including Ptsi Managed Services Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541330 Engineering Services	$135,636,834	1.5%	Rank history: #6 in FY2021, #6 in FY2022, #20 in FY2023 and #13 in FY2024; unchanged since FY2024.
14	Noblis, Inc. Top NAICS codes 541330 Engineering Services 541990 All Other Professional, Scientific, and Technical Services	$111,044,160	1.2%	Rank history: #12 in FY2021, #13 in FY2022, #12 in FY2023 and #11 in FY2024; down 3 since FY2024.
15	Crowley Government Services, Inc. Top NAICS codes 336611 Ship Building and Repairing	$101,861,599	1.1%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; down 12 since FY2024.
16	Robinson Aviation (Rva), Inc. Top NAICS codes 488111 Air Traffic Control	$85,414,425	1.0%	Rank history: #14 in FY2021, #16 in FY2022, #15 in FY2023 and #14 in FY2024; down 2 since FY2024.
17	Karsun Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$81,135,882	0.9%	Rank history: #13 in FY2021, #19 in FY2022, #16 in FY2023 and #17 in FY2024; unchanged since FY2024.
18	Stratacomm, LLC Top NAICS codes 541810 Advertising Agencies	$80,409,525	0.9%	Rank history: #17 in FY2021, #18 in FY2022, #17 in FY2023 and #16 in FY2024; down 2 since FY2024.
19	Arctic Slope Regional Corporation 7 awardees, including Asrc Federal System Solutions LLC, FDT Water Infrastructure, LLC and Arctic Slope Technical Services, Inc. Top NAICS codes 541330 Engineering Services 237310 Highway, Street, and Bridge Construction 541519 Other Computer Related Services	$80,052,029	0.9%	Rank history: #15 in FY2021, #15 in FY2022, #21 in FY2023 and #20 in FY2024; up 1 since FY2024.
20	Midwest Air Traffic Control Service Inc Top NAICS codes 488111 Air Traffic Control	$75,553,033	0.8%	Rank history: #18 in FY2021, #20 in FY2022, #19 in FY2023 and #15 in FY2024; down 5 since FY2024.
21	Rohde & Schwarz GMBH & Co. Kommanditgesellschaft Through Rohde & Schwarz Usa, Inc. Top NAICS codes 334210 Telephone Apparatus Manufacturing 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals 334419 Other Electronic Component Manufacturing	$73,113,185	0.8%	Rank history: not on the FY2021–FY2024 lists; new.
22	Central Southern Construction Corp. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$66,890,105	0.8%	Rank history: not on the FY2021 list, #90 in FY2022, #75 in FY2023 and not on the FY2024 list; up 123 since FY2024.
23	Structsure Projects Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$64,835,168	0.7%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023 and not on the FY2024 list; up 375 since FY2024.
24	At&T Inc. 5 awardees, including At&T Enterprises, LLC and Att Mobility LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite) 517111 Wired Telecommunications Carriers	$55,132,581	0.6%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2024; up 10 since FY2024.
25	Fort Myer Construction Corp Top NAICS codes 237310 Highway, Street, and Bridge Construction	$54,392,727	0.6%	Rank history: not on the FY2021 list, #7 in FY2022 and not on the FY2023–FY2024 lists; returned.
26	Honeywell International Inc. 4 awardees Top NAICS codes 236220 Commercial and Institutional Building Construction 541330 Engineering Services 561621 Security Systems Services (except Locksmiths)	$52,269,313	0.6%	Rank history: #98 in FY2021, #22 in FY2022 and not on the FY2023–FY2024 lists; up 295 since FY2024.
27	Tote Services, LLC Top NAICS codes 483111 Deep Sea Freight Transportation 336611 Ship Building and Repairing	$48,524,182	0.5%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; up 31 since FY2024.
28	Concept Solutions LLC Top NAICS codes 541511 Custom Computer Programming Services 541330 Engineering Services 541990 All Other Professional, Scientific, and Technical Services	$47,286,571	0.5%	Rank history: #34 in FY2021, #41 in FY2022, #25 in FY2023 and #26 in FY2024; down 2 since FY2024.
29	Dell Technologies Inc. Through Dell Federal Systems L.P Top NAICS codes 513210 Software Publishers 334112 Computer Storage Device Manufacturing	$44,151,103	0.5%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2024; down 11 since FY2024.
30	Veracity Engineering LLC Top NAICS codes 541330 Engineering Services	$43,954,400	0.5%	Rank history: #26 in FY2021, #52 in FY2022, #33 in FY2023 and #21 in FY2024; down 9 since FY2024.
31	Steve Manning Construction Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$43,792,139	0.5%	Rank history: not on the FY2021 list, #33 in FY2022, #18 in FY2023 and #43 in FY2024; up 12 since FY2024.
32	Ernst & Young LLP 2 awardees Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541519 Other Computer Related Services 541211 Offices of Certified Public Accountants	$43,247,148	0.5%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; up 24 since FY2024.
33	M.c. Dean, Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths) 238210 Electrical Contractors and Other Wiring Installation Contractors	$42,796,722	0.5%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023 and #68 in FY2024; up 35 since FY2024.
34	Estes Bros. Const. Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$41,641,200	0.5%	Rank history: #16 in FY2021, #28 in FY2022, #35 in FY2023 and #23 in FY2024; down 11 since FY2024.
35	KBR Wyle Services LLC 2 awardees Top NAICS codes 541330 Engineering Services 561621 Security Systems Services (except Locksmiths)	$41,639,965	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
36	Jacobs Engineering Group Inc. 4 awardees, including Jacobs Project Management Co Top NAICS codes 541330 Engineering Services	$40,628,917	0.5%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 14 since FY2024.
37	Technical Communities, Inc. Top NAICS codes 443120 Computer and Software Stores 334419 Other Electronic Component Manufacturing 334515 Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals	$37,959,333	0.4%	Rank history: not on the FY2021–FY2024 lists; up 203 since FY2024.
38	Wells Global, LLC Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors 611519 Other Technical and Trade Schools	$37,545,776	0.4%	Rank history: #49 in FY2021, #51 in FY2022, #24 in FY2023 and #69 in FY2024; up 31 since FY2024.
39	Iron Bow Technologies, LLC Top NAICS codes 334111 Electronic Computer Manufacturing 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$37,147,922	0.4%	Rank history: not on the FY2021–FY2024 lists; up 70 since FY2024.
40	Washington Metropolitan Area Transit Authority Top NAICS codes 485999 All Other Transit and Ground Passenger Transportation 485111 Mixed Mode Transit Systems	$35,626,396	0.4%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2024; up 39 since FY2024.
41	Booz Allen Hamilton Holding Corporation 3 awardees, including Booz Allen Hamilton Inc. Top NAICS codes 541330 Engineering Services 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$34,650,563	0.4%	Rank history: #27 in FY2021, #27 in FY2022, #31 in FY2023 and #28 in FY2024; down 13 since FY2024.
42	Astrion Group, LLC Through Oasis Systems, LLC Top NAICS codes 541330 Engineering Services	$34,392,413	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
43	Microtechnologies LLC Top NAICS codes 541512 Computer Systems Design Services 513210 Software Publishers	$32,755,954	0.4%	Rank history: #54 in FY2021, #59 in FY2022, #52 in FY2023 and #36 in FY2024; down 7 since FY2024.
44	Serco Inc Top NAICS codes 488111 Air Traffic Control	$32,701,352	0.4%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and #24 in FY2024; down 20 since FY2024.
45	Ensco Inc. Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$31,636,056	0.4%	Rank history: #64 in FY2021, #79 in FY2022, #32 in FY2023 and #51 in FY2024; up 6 since FY2024.
46	Strongbridge LLC Top NAICS codes 541511 Custom Computer Programming Services	$31,279,102	0.4%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and #45 in FY2024; down 1 since FY2024.
47	Chickasaw Nation 8 awardees, including Technology Trends Group, LLC, Chickasaw Strategic Pointe, LLC and Digitalibiz, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541330 Engineering Services 238210 Electrical Contractors and Other Wiring Installation Contractors	$29,858,128	0.3%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2024; up 34 since FY2024.
48	Crown Innovations, Inc. Top NAICS codes 237130 Power and Communication Line and Related Structures Construction 541511 Custom Computer Programming Services 541330 Engineering Services	$29,771,545	0.3%	Rank history: not on the FY2021–FY2024 lists; up 185 since FY2024.
49	A3 Technology Inc. Top NAICS codes 541330 Engineering Services	$29,591,826	0.3%	Rank history: #33 in FY2021, #47 in FY2022, #53 in FY2023 and #39 in FY2024; down 10 since FY2024.
50	Senture LLC Top NAICS codes 541519 Other Computer Related Services	$29,054,289	0.3%	Rank history: #48 in FY2021, not on the FY2022–FY2023 lists and #53 in FY2024; up 3 since FY2024.
51	Regulus Group, LLC Top NAICS codes 541330 Engineering Services	$28,793,645	0.3%	Rank history: not on the FY2021 list, #74 in FY2022, #64 in FY2023 and #54 in FY2024; up 3 since FY2024.
52	Lockheed Martin Corporation 3 awardees, including Lockheed Martin Services, LLC, Zeta Associates Inc. and Lockheed Martin Coherent Technologies, Inc. Top NAICS codes 541330 Engineering Services 334519 Other Measuring and Controlling Device Manufacturing 811219 Other Electronic and Precision Equipment Repair and Maintenance	$28,279,173	0.3%	Rank history: #25 in FY2021, #39 in FY2022, #46 in FY2023 and #42 in FY2024; down 10 since FY2024.
53	KLD Associates Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541330 Engineering Services	$26,862,960	0.3%	Rank history: #86 in FY2021, #65 in FY2022, #49 in FY2023 and #40 in FY2024; down 13 since FY2024.
54	Scalfo Electric Inc. Top NAICS codes 237130 Power and Communication Line and Related Structures Construction 236220 Commercial and Institutional Building Construction	$26,434,500	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
55	Capital Group, LLC Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$25,983,129	0.3%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2024; up 5 since FY2024.
56	Cherokee Nation Red Wing, L.L.C. 2 awardees, including Cherokee Strategic Solutions, L.L.C. and Cherokee CRC LLC Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541511 Custom Computer Programming Services	$25,884,785	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
57	Changeis, Inc. Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services	$25,336,261	0.3%	Rank history: #30 in FY2021, #38 in FY2022, #39 in FY2023 and #38 in FY2024; down 19 since FY2024.
58	O & A Technical Services LLC Top NAICS codes 561210 Facilities Support Services 423410 Photographic Equipment and Supplies Merchant Wholesalers	$25,135,918	0.3%	Rank history: not on the FY2021–FY2024 lists; up 72 since FY2024.
59	Nice Systems Inc. Top NAICS codes 512290 Other Sound Recording Industries	$24,074,505	0.3%	Rank history: not on the FY2021–FY2024 lists; up 121 since FY2024.
60	Mckenzie Construction & Site Development LLC Top NAICS codes 237310 Highway, Street, and Bridge Construction 236220 Commercial and Institutional Building Construction 238220 Plumbing, Heating, and Air-Conditioning Contractors	$23,574,497	0.3%	Rank history: not on the FY2021–FY2024 lists; up 97 since FY2024.
61	Verizon 5 awardees, including Cellco Partnership, Verizon Business Network Services LLC and Verizon New York, Inc. Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite) 517111 Wired Telecommunications Carriers 238210 Electrical Contractors and Other Wiring Installation Contractors	$23,200,210	0.3%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2024; down 53 since FY2024.
62	Data Comm for Business Inc. Top NAICS codes 334210 Telephone Apparatus Manufacturing	$23,071,569	0.3%	Rank history: not on the FY2021–FY2024 lists; up 153 since FY2024.
63	Glacier Construction Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$22,527,340	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
64	Cavan Solutions Inc. Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$22,495,985	0.3%	Rank history: not on the FY2021 list, #68 in FY2022, not on the FY2023 list and #70 in FY2024; up 6 since FY2024.
65	S & L Landscaping & Excavation Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction	$22,389,330	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
66	Spatial Front Inc Top NAICS codes 541511 Custom Computer Programming Services 541519 Other Computer Related Services 561990 All Other Support Services	$22,002,875	0.2%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023 and #32 in FY2024; down 34 since FY2024.
67	Transportation Research Center Inc. Top NAICS codes 541380 Testing Laboratories and Services	$21,969,849	0.2%	Rank history: #43 in FY2021, #70 in FY2022, #40 in FY2023 and #46 in FY2024; down 21 since FY2024.
68	Groundswell Corporation Top NAICS codes 541512 Computer Systems Design Services	$21,945,503	0.2%	Rank history: #62 in FY2021, #60 in FY2022, not on the FY2023 list and #52 in FY2024; down 16 since FY2024.
69	West Point Contractors, Inc. Top NAICS codes 237310 Highway, Street, and Bridge Construction 236220 Commercial and Institutional Building Construction 238190 Other Foundation, Structure, and Building Exterior Contractors	$21,941,849	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
70	Eclipse Companies, LLC Top NAICS codes 237310 Highway, Street, and Bridge Construction	$21,550,948	0.2%	Rank history: not on the FY2021–FY2024 lists; up 116 since FY2024.
71	Cssi Inc. Top NAICS codes 541330 Engineering Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$21,175,848	0.2%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #59 in FY2024; down 12 since FY2024.
72	Evans Incorporated Top NAICS codes 541330 Engineering Services	$21,061,241	0.2%	Rank history: #35 in FY2021, #56 in FY2022, #68 in FY2023 and #61 in FY2024; down 11 since FY2024.
73	ATAC Top NAICS codes 541330 Engineering Services 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$20,829,094	0.2%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023 and #71 in FY2024; down 2 since FY2024.
74	ICF International Inc. 2 awardees, including Incentive Technology Group LLC and ICF Incorporated, L.L.C. Top NAICS codes 541513 Computer Facilities Management Services 541611 Administrative Management and General Management Consulting Services 541620 Environmental Consulting Services	$20,237,706	0.2%	Rank history: not on the FY2021–FY2023 lists and #37 in FY2024; down 37 since FY2024.
75	Bering Straits Native Corporation 3 awardees, including Bering Straits Professional Services, LLC and Paragon Environmental Services, LLC Top NAICS codes 561612 Security Guards and Patrol Services 562910 Remediation Services	$20,112,485	0.2%	Rank history: #61 in FY2021, #78 in FY2022, #77 in FY2023 and not on the FY2024 list; up 296 since FY2024.
76	Nana Regional Corporation, Inc. 4 awardees, including Akima Global Logistics, LLC, Five Rivers Analytics, LLC and Systems Intelligence, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 334111 Electronic Computer Manufacturing	$19,730,610	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
77	Palantir Technologies Inc. Top NAICS codes 513210 Software Publishers	$19,577,042	0.2%	Rank history: not on the FY2021–FY2024 lists; up 38 since FY2024.
78	Metgreen Solutions Inc. Top NAICS codes 541519 Other Computer Related Services	$19,260,351	0.2%	Rank history: not on the FY2021–FY2023 lists and #76 in FY2024; down 2 since FY2024.
79	V3Gate, LLC Top NAICS codes 541519 Other Computer Related Services	$18,908,706	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
80	Vero Technical Support Inc Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$18,769,463	0.2%	Rank history: not on the FY2021–FY2023 lists and #84 in FY2024; up 4 since FY2024.
81	Talton Marine Terminal, LLC Top NAICS codes 488390 Other Support Activities for Water Transportation 561210 Facilities Support Services	$18,585,374	0.2%	Rank history: not on the FY2021–FY2024 lists; up 35 since FY2024.
82	Eaton Corporation Public Limited Company Through Eaton Corporation Top NAICS codes 811210 Electronic and Precision Equipment Repair and Maintenance 335999 All Other Miscellaneous Electrical Equipment and Component Manufacturing 335311 Power, Distribution, and Specialty Transformer Manufacturing	$17,371,371	0.2%	Rank history: #71 in FY2021, #89 in FY2022, #92 in FY2023 and not on the FY2024 list; up 204 since FY2024.
83	Whelcon Contractors LLC Top NAICS codes 237310 Highway, Street, and Bridge Construction	$17,336,889	0.2%	Rank history: not on the FY2021–FY2024 lists; up 204 since FY2024.
84	Saab AB Through Saab Inc. Top NAICS codes 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing 811210 Electronic and Precision Equipment Repair and Maintenance	$17,233,710	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
85	Hamilton Construction Co Top NAICS codes 237310 Highway, Street, and Bridge Construction	$16,904,108	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
86	Keystone Shipping Services, Inc. Top NAICS codes 483111 Deep Sea Freight Transportation	$16,814,400	0.2%	Rank history: not on the FY2021–FY2024 lists; up 144 since FY2024.
87	Diversified Management Solutions, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$16,138,478	0.2%	Rank history: #95 in FY2021, not on the FY2022–FY2023 lists and #100 in FY2024; up 13 since FY2024.
88	Quecon, Inc. Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services	$15,903,581	0.2%	Rank history: not on the FY2021–FY2024 lists; up 176 since FY2024.
89	OCH Technologies, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541511 Custom Computer Programming Services	$15,714,993	0.2%	Rank history: not on the FY2021–FY2024 lists; up 15 since FY2024.
90	Maglez Engineerings & Contractors Corp Top NAICS codes 237310 Highway, Street, and Bridge Construction	$15,506,331	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
91	Alliant Insurance Services, Inc. Top NAICS codes 524210 Insurance Agencies and Brokerages	$15,468,366	0.2%	Rank history: #63 in FY2021, #85 in FY2022, not on the FY2023 list and #64 in FY2024; down 27 since FY2024.
92	CI2 Aviation, Inc. Top NAICS codes 488111 Air Traffic Control	$15,265,728	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
93	Sentinel Power Services, LLC Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$14,818,298	0.2%	Rank history: not on the FY2021 list, #69 in FY2022, not on the FY2023 list and #93 in FY2024; unchanged since FY2024.
94	Janco FS 2, LLC Top NAICS codes 561210 Facilities Support Services	$14,810,039	0.2%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and #89 in FY2024; down 5 since FY2024.
95	American Bureau of Shipping 3 awardees, including Absg Consulting Inc. and Abs Digital Solutions LLC Top NAICS codes 541620 Environmental Consulting Services 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$14,795,117	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
96	Pacific Layberthing South, LLC Top NAICS codes 488390 Other Support Activities for Water Transportation	$14,722,666	0.2%	Rank history: not on the FY2021 list, #76 in FY2022 and not on the FY2023–FY2024 lists; up 39 since FY2024.
97	Condor Reliability Services, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$14,686,413	0.2%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023 and not on the FY2024 list; up 15 since FY2024.
98	CGI Federal Inc. 2 awardees, including Manufacturing Technical Solutions, LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 611430 Professional and Management Development Training 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$14,532,354	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
99	The Matthews Group Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$14,258,762	0.2%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and not on the FY2024 list; up 117 since FY2024.
100	E Corp Top NAICS codes 236220 Commercial and Institutional Building Construction	$14,086,464	0.2%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; down 65 since FY2024.

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 $8.91 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.

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