Top 100 DOD Washington Headquarters Service Contractors, FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	National Security Technology Accelerator Inc.	$389,571,766	17.7%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #2 in FY2024; up 1 since FY2024.
2	Deloitte 2 awardees, including Deloitte Consulting LLP and Deloitte & Touche LLP Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541611 Administrative Management and General Management Consulting Services 541211 Offices of Certified Public Accountants	$216,610,045	9.9%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; up 1 since FY2024.
3	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$201,323,739	9.2%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #1 in FY2024; down 2 since FY2024.
4	Metrostar Systems, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$80,722,581	3.7%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023 and not on the FY2024 list; up 97 since FY2024.
5	Northrop Grumman Corporation 4 awardees, including Northrop Grumman Systems Corporation Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$45,316,983	2.1%	Rank history: not on the FY2021 list, #9 in FY2022, #7 in FY2023 and #6 in FY2024; up 1 since FY2024.
6	Science Applications International Corporation Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$43,307,092	2.0%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; up 11 since FY2024.
7	Kongsberg Underwater Technology LLC Through Kongsberg Discovery US, LLC	$29,760,636	1.4%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2024; up 26 since FY2024.
8	Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541990 All Other Professional, Scientific, and Technical Services	$28,741,710	1.3%	Rank history: not on the FY2021–FY2024 lists; new.
9	Signature Renovations LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$27,156,243	1.2%	Rank history: not on the FY2021 list, #32 in FY2022, #11 in FY2023 and #48 in FY2024; up 39 since FY2024.
10	Servicesource Inc. Top NAICS codes 561210 Facilities Support Services	$27,017,122	1.2%	Rank history: #4 in FY2021, #6 in FY2022, #12 in FY2023 and #8 in FY2024; down 2 since FY2024.
11	Qualx, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$25,597,692	1.2%	Rank history: #25 in FY2021, #11 in FY2022, #14 in FY2023 and #28 in FY2024; up 17 since FY2024.
12	RTX Corporation 6 awardees, including Raytheon Company Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 611430 Professional and Management Development Training 334511 Search, Detection, Navigation, Guidance, Aeronautical, and Nautical System and Instrument Manufacturing	$24,978,648	1.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 38 since FY2024.
13	Two Six Labs, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$23,707,961	1.1%	Rank history: not on the FY2021–FY2024 lists; up 123 since FY2024.
14	Sehlke Consulting LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$23,659,565	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
15	Chameleon Consulting Group, LLC	$23,277,638	1.1%	Rank history: not on the FY2021 list, #44 in FY2022 and not on the FY2023–FY2024 lists; returned.
16	Nhanced Semiconductors, Inc.	$22,476,883	1.0%	Rank history: not on the FY2021–FY2022 lists, #3 in FY2023 and #23 in FY2024; up 7 since FY2024.
17	Trust Automation Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$20,315,558	0.9%	Rank history: not on the FY2021–FY2024 lists; new.
18	Huntington Ingalls Industries, Inc. 2 awardees, including Enlighten It Consulting LLC and HII Mission Technologies Corp Top NAICS codes 541511 Custom Computer Programming Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$18,836,381	0.9%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; up 17 since FY2024.
19	Nakupuna Consulting LLC Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services 516210 Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers	$18,647,621	0.8%	Rank history: not on the FY2021–FY2022 lists, #30 in FY2023 and #25 in FY2024; up 6 since FY2024.
20	SNA International LLC Top NAICS codes 621511 Medical Laboratories	$17,830,866	0.8%	Rank history: #17 in FY2021, #19 in FY2022, #23 in FY2023 and not on the FY2024 list; up 145 since FY2024.
21	Asgn Incorporated Through ECS Federal, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$17,633,500	0.8%	Rank history: not on the FY2021–FY2024 lists; new.
22	General Dynamics Corporation 2 awardees, including General Dynamics Information Technology, Inc. and Csra LLC Top NAICS codes 541519 Other Computer Related Services 541511 Custom Computer Programming Services	$17,358,110	0.8%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023 and #54 in FY2024; up 32 since FY2024.
23	Lockheed Martin Corporation 6 awardees Top NAICS codes 511210 Software Publishers 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$16,757,694	0.8%	Rank history: #10 in FY2021, #3 in FY2022, #29 in FY2023 and #27 in FY2024; up 4 since FY2024.
24	Domino Data Lab Inc. Top NAICS codes 541512 Computer Systems Design Services	$16,536,422	0.8%	Rank history: not on the FY2021–FY2024 lists; new.
25	ICR Inc Top NAICS codes 541511 Custom Computer Programming Services	$15,628,033	0.7%	Rank history: not on the FY2021–FY2024 lists; up 128 since FY2024.
26	Isi-Markon JV LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$15,524,714	0.7%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2024; up 37 since FY2024.
27	Securigence LLC Top NAICS codes 541511 Custom Computer Programming Services	$15,345,831	0.7%	Rank history: not on the FY2021–FY2023 lists and #64 in FY2024; up 37 since FY2024.
28	Concurrent Technologies Corp Top NAICS codes 541330 Engineering Services	$14,909,204	0.7%	Rank history: not on the FY2021 list, #25 in FY2022, #17 in FY2023 and #29 in FY2024; up 1 since FY2024.
29	Advanced Technology International	$13,760,035	0.6%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2024; up 50 since FY2024.
30	Systems Planning and Analysis, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$13,643,826	0.6%	Rank history: not on the FY2021–FY2024 lists; up 78 since FY2024.
31	CNF Technologies Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$12,496,743	0.6%	Rank history: not on the FY2021 list, #75 in FY2022 and not on the FY2023–FY2024 lists; returned.
32	Didlake Inc. Top NAICS codes 561720 Janitorial Services	$12,436,352	0.6%	Rank history: #19 in FY2021, #7 in FY2022, not on the FY2023 list and #36 in FY2024; up 4 since FY2024.
33	Attain Consulting Group LLC Through Maximus Federal Technology Solutions, LLC Top NAICS codes 541511 Custom Computer Programming Services	$12,180,703	0.6%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2024; down 12 since FY2024.
34	Cathexis LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$10,741,605	0.5%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2024; up 18 since FY2024.
35	Bering Straits Native Corporation Through Stampede Ventures, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$10,560,036	0.5%	Rank history: #13 in FY2021, #26 in FY2022 and not on the FY2023–FY2024 lists; up 253 since FY2024.
36	Hydronalix Inc. Top NAICS codes 541330 Engineering Services	$10,526,802	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
37	The CNA Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$10,323,345	0.5%	Rank history: #29 in FY2021, #31 in FY2022, #22 in FY2023 and #38 in FY2024; up 1 since FY2024.
38	Inkit Worldwide LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$9,982,818	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
39	CCS Lintech JV LLC Top NAICS codes 541512 Computer Systems Design Services	$9,830,971	0.4%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2024; up 29 since FY2024.
40	IST Research, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$9,534,130	0.4%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2024; down 27 since FY2024.
41	Coho Consulting Group LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541614 Process, Physical Distribution, and Logistics Consulting Services	$8,379,380	0.4%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023 and #51 in FY2024; up 10 since FY2024.
42	AAA Complete Building Services Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$8,372,350	0.4%	Rank history: not on the FY2021–FY2024 lists; up 266 since FY2024.
43	Qcm, Inc. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$8,257,620	0.4%	Rank history: #26 in FY2021, #30 in FY2022, #31 in FY2023 and #22 in FY2024; down 21 since FY2024.
44	Johnson Controls Building Automation Systems, LLC Top NAICS codes 541512 Computer Systems Design Services	$8,065,161	0.4%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2024; down 30 since FY2024.
45	Quicklogic Corp	$8,000,000	0.4%	Rank history: not on the FY2021 list, #34 in FY2022, #19 in FY2023 and #70 in FY2024; up 25 since FY2024.
46	Chimes International, Ltd. Through Chimes District of Columbia Inc. Top NAICS codes 561720 Janitorial Services	$7,936,506	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
47	M.c. Dean, Inc. Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance 238210 Electrical Contractors and Other Wiring Installation Contractors 561621 Security Systems Services (except Locksmiths)	$7,790,559	0.4%	Rank history: #8 in FY2021, #43 in FY2022, #61 in FY2023 and #46 in FY2024; down 1 since FY2024.
48	HDD JV Top NAICS codes 237310 Highway, Street, and Bridge Construction	$7,600,000	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
49	Puyenpa Technologies LLC 2 awardees Top NAICS codes 236220 Commercial and Institutional Building Construction 336611 Ship Building and Repairing	$7,509,566	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
50	Tekpro Support Services, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$7,499,572	0.3%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; up 6 since FY2024.
51	Zone 5 Technologies, LLC	$7,467,764	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
52	Honeywell International Inc. Top NAICS codes 333242 Semiconductor Machinery Manufacturing	$7,328,858	0.3%	Rank history: #57 in FY2021, #17 in FY2022, #5 in FY2023 and #5 in FY2024; down 47 since FY2024.
53	Nana Regional Corporation, Inc. Through Akima Data Management LLC Top NAICS codes 541512 Computer Systems Design Services	$7,165,474	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
54	Chinook Systems Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$7,094,590	0.3%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2024; up 11 since FY2024.
55	Palantir Technologies Inc. Through Palantir USG Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$6,862,140	0.3%	Rank history: not on the FY2021 list, #4 in FY2022, not on the FY2023 list and #15 in FY2024; down 40 since FY2024.
56	Massachusetts Institute of Technology Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$6,256,330	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
57	Hdr, Inc. Through HDR Architecture, Inc. Top NAICS codes 541330 Engineering Services	$6,226,888	0.3%	Rank history: #49 in FY2021, #29 in FY2022, #34 in FY2023 and #69 in FY2024; up 12 since FY2024.
58	Bigbear.ai Federal, LLC Top NAICS codes 541512 Computer Systems Design Services	$5,954,789	0.3%	Rank history: not on the FY2021–FY2024 lists; up 275 since FY2024.
59	Accenture Federal Services LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 511210 Software Publishers	$5,951,440	0.3%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2024; up 27 since FY2024.
60	Calspan, LLC Top NAICS codes 488190 Other Support Activities for Air Transportation	$5,690,540	0.3%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2024; up 12 since FY2024.
61	Alaska Native Government Services LLC Through Copper River Technologies, LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541519 Other Computer Related Services 561320 Temporary Help Services	$5,648,319	0.3%	Rank history: #33 in FY2021, #24 in FY2022, #15 in FY2023 and #40 in FY2024; down 21 since FY2024.
62	Applied Intuition, Inc.	$5,606,000	0.3%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; down 13 since FY2024.
63	Systems & Technology Research LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$5,584,254	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
64	Cencore LLC Top NAICS codes 332311 Prefabricated Metal Building and Component Manufacturing	$5,449,980	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
65	Exceptional Employees for Exceptional Results Inc. Top NAICS codes 541330 Engineering Services	$5,416,928	0.2%	Rank history: not on the FY2021–FY2024 lists; up 56 since FY2024.
66	The Mitre Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$5,393,063	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
67	Lilt Inc.	$5,221,354	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
68	Jasint Consulting and Technologies, LLC Top NAICS codes 541612 Human Resources Consulting Services 541611 Administrative Management and General Management Consulting Services	$5,057,415	0.2%	Rank history: #39 in FY2021, #40 in FY2022, #46 in FY2023 and not on the FY2024 list; up 42 since FY2024.
69	American Systems Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$5,000,000	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
70	The Clearing, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,946,151	0.2%	Rank history: not on the FY2021–FY2022 lists, #86 in FY2023 and not on the FY2024 list; up 67 since FY2024.
71	Innovasystems International LLC Top NAICS codes 541330 Engineering Services	$4,872,743	0.2%	Rank history: #36 in FY2021, #58 in FY2022, #28 in FY2023 and #16 in FY2024; down 55 since FY2024.
72	Jensen Hughes, Inc. Top NAICS codes 541330 Engineering Services	$4,833,009	0.2%	Rank history: #55 in FY2021, #52 in FY2022, #54 in FY2023 and #80 in FY2024; up 8 since FY2024.
73	TEC Solutions LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$4,790,038	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
74	Applied Environmental Inc. Top NAICS codes 541620 Environmental Consulting Services	$4,565,463	0.2%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and #77 in FY2024; up 3 since FY2024.
75	R & R Janitorial, Painting & Building Services Inc. Top NAICS codes 561720 Janitorial Services	$4,543,180	0.2%	Rank history: #46 in FY2021, #36 in FY2022, #55 in FY2023 and #81 in FY2024; up 6 since FY2024.
76	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$4,505,660	0.2%	Rank history: not on the FY2021–FY2024 lists; up 225 since FY2024.
77	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 541519 Other Computer Related Services 513210 Software Publishers	$4,490,189	0.2%	Rank history: not on the FY2021–FY2024 lists; up 38 since FY2024.
78	Nakupuna Services LLC Top NAICS codes 561210 Facilities Support Services	$4,482,425	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
79	Maximus Federal Services, Inc. Top NAICS codes 561422 Telemarketing Bureaus and Other Contact Centers	$4,432,171	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
80	Leidos Holdings, Inc. 3 awardees, including Leidos, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541690 Other Scientific and Technical Consulting Services 541330 Engineering Services	$4,330,127	0.2%	Rank history: #64 in FY2021, #81 in FY2022, #88 in FY2023 and not on the FY2024 list; up 42 since FY2024.
81	Istari Federal LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$4,236,908	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
82	E.f. Kearney, Limited Through Kearney & Company, P.C. Top NAICS codes 541219 Other Accounting Services 541611 Administrative Management and General Management Consulting Services	$4,230,878	0.2%	Rank history: not on the FY2021–FY2023 lists and #100 in FY2024; up 18 since FY2024.
83	Optimum Low Voltage LLC Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$4,085,365	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
84	Analytic Services Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,076,874	0.2%	Rank history: #3 in FY2021, #5 in FY2022, #20 in FY2023 and not on the FY2024 list; up 191 since FY2024.
85	Bering Straits Global Innovations, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$4,059,398	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
86	Andworx, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,024,338	0.2%	Rank history: not on the FY2021 list, #64 in FY2022, #62 in FY2023 and #85 in FY2024; down 1 since FY2024.
87	Dgi-Ati II LLC Top NAICS codes 541620 Environmental Consulting Services	$3,952,608	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
88	Apogee Research LLC	$3,811,087	0.2%	Rank history: not on the FY2021–FY2024 lists; up 39 since FY2024.
89	Addon Services LLC Top NAICS codes 237310 Highway, Street, and Bridge Construction	$3,750,000	0.2%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2024; down 63 since FY2024.
90	Metron Incorporated Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,733,610	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
91	Georgia TECH Applied Research Corp Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,660,348	0.2%	Rank history: not on the FY2021–FY2024 lists; up 40 since FY2024.
92	Koniag Professional Services, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,648,714	0.2%	Rank history: not on the FY2021–FY2024 lists; up 214 since FY2024.
93	Gartner, Inc. Top NAICS codes 541519 Other Computer Related Services	$3,460,780	0.2%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2024; down 5 since FY2024.
94	By Light Professional It Services LLC Top NAICS codes 541512 Computer Systems Design Services	$3,459,181	0.2%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2024; unchanged since FY2024.
95	Microsoft Corporation	$3,420,000	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
96	Amentum Holdings, Inc. Through Amentum Services, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,359,884	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
97	Alliance for Energy Innovation, LLC Top NAICS codes 541711 Research and Development in Biotechnology	$3,244,388	0.1%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and #11 in FY2024; down 86 since FY2024.
98	Invictus International Consulting LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$3,188,406	0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2024; down 40 since FY2024.
99	Koniag Emerging Technologies LLC Top NAICS codes 541512 Computer Systems Design Services 541611 Administrative Management and General Management Consulting Services	$3,175,431	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	Oceus Networks, LLC	$3,144,565	0.1%	Rank history: not on the FY2021–FY2024 lists; new.

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 $2.2 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. 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