Top 100 National Aeronautics and Space Administration Contractors, FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	California Institute of Technology 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611310 Colleges, Universities, and Professional Schools	$2,367,513,644	13.7%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	The Boeing Company 15 awardees, including Millennium Space Systems, Inc. and Boeing Aerospace Operations, Inc. Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$1,572,001,682	9.1%	Rank history: #2 in FY2021, #2 in FY2022, #3 in FY2023 and #3 in FY2024; up 1 since FY2024.
3	Space Exploration Technologies Corp. 2 awardees 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) 481212 Nonscheduled Chartered Freight Air Transportation	$1,348,505,845	7.8%	Rank history: #3 in FY2021, #3 in FY2022, #2 in FY2023 and #2 in FY2024; down 1 since FY2024.
4	Blue Origin Washington, LLC 2 awardees, including Blue Origin, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 481212 Nonscheduled Chartered Freight Air Transportation 336414 Guided Missile and Space Vehicle Manufacturing	$834,248,836	4.8%	Rank history: #60 in FY2021, not on the FY2022 list, #8 in FY2023 and #5 in FY2024; up 1 since FY2024.
5	Peraton Inc. Top NAICS codes 517919 All Other Telecommunications 541330 Engineering Services 541512 Computer Systems Design Services	$541,471,073	3.1%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; up 4 since FY2024.
6	Amentum Holdings, Inc. 6 awardees, including Amentum Technology, Inc., Amentum Spaceport LLC and Amentum Services, Inc. Top NAICS codes 561210 Facilities Support Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services	$522,867,440	3.0%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 44 since FY2024.
7	Lockheed Martin Corporation 8 awardees, including Lockheed Martin Integrated Systems, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336414 Guided Missile and Space Vehicle Manufacturing 336411 Aircraft Manufacturing	$511,719,408	3.0%	Rank history: #4 in FY2021, #4 in FY2022, #4 in FY2023 and #4 in FY2024; down 3 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)	$461,576,897	2.7%	Rank history: not on the FY2021–FY2024 lists; new.
9	Northrop Grumman Systems Corporation 15 awardees, including Scaled Composites, LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336415 Guided Missile and Space Vehicle Propulsion Unit and Propulsion Unit Parts Manufacturing	$419,903,231	2.4%	Rank history: #5 in FY2021, #6 in FY2022, #6 in FY2023 and #13 in FY2024; up 4 since FY2024.
10	KBR Wyle Services LLC 4 awardees, including Kord Technologies, LLC Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$388,444,334	2.2%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and #11 in FY2024; up 1 since FY2024.
11	L3Harris Technologies, Inc. 8 awardees, including Aerojet Rocketdyne of DE, Inc., Aerojet Rocketdyne, Inc. and NV5 Geospatial Solutions, Inc. Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 333314 Optical Instrument and Lens Manufacturing 511210 Software Publishers	$325,942,761	1.9%	Rank history: #34 in FY2021, #30 in FY2022, #47 in FY2023 and #6 in FY2024; down 5 since FY2024.
12	Association of Universities for Research In Astronomy, Inc. 2 awardees Top NAICS codes 333314 Optical Instrument and Lens Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$310,140,294	1.8%	Rank history: #20 in FY2021, #10 in FY2022, #15 in FY2023 and #12 in FY2024; unchanged since FY2024.
13	RTX Corporation 16 awardees, including Hamilton Sundstrand Space Systems International, Inc., Raytheon Company and Blue Canyon Technologies LLC Top NAICS codes 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541512 Computer Systems Design Services	$293,908,797	1.7%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2024; up 1 since FY2024.
14	Bechtel Corp Through Bechtel National, Inc. Top NAICS codes 236210 Industrial Building Construction	$272,595,908	1.6%	Rank history: #35 in FY2021, #52 in FY2022, #13 in FY2023 and #7 in FY2024; down 7 since FY2024.
15	Arctic Slope Regional Corporation 8 awardees, including Inuteq, LLC, Agile Decision Sciences, LLC and Asrc Federal Facilities Logistics LLC Top NAICS codes 541513 Computer Facilities Management Services 561210 Facilities Support Services 561110 Office Administrative Services	$221,093,852	1.3%	Rank history: #16 in FY2021, #15 in FY2022, #35 in FY2023 and #38 in FY2024; up 23 since FY2024.
16	University System of Maryland 5 awardees, including University of Maryland, College Park, University of Maryland Baltimore County and University of Maryland Es Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 813920 Professional Organizations	$159,436,048	0.9%	Rank history: #33 in FY2021, #24 in FY2022, #21 in FY2023 and #69 in FY2024; up 53 since FY2024.
17	The Chenega Corporation Through Chenega Global Protection, LLC Top NAICS codes 561612 Security Guards and Patrol Services 561990 All Other Support Services	$140,659,554	0.8%	Rank history: not on the FY2021 list, #63 in FY2022, #23 in FY2023 and #67 in FY2024; up 50 since FY2024.
18	Science Systems and Applications, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$133,195,703	0.8%	Rank history: #12 in FY2021, #13 in FY2022, #14 in FY2023 and #15 in FY2024; down 3 since FY2024.
19	CACI International Inc. Through Caci, Inc. - Federal Top NAICS codes 541512 Computer Systems Design Services	$132,818,767	0.8%	Rank history: not on the FY2021–FY2024 lists; up 160 since FY2024.
20	Axiom Space Inc. 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)	$130,742,823	0.8%	Rank history: not on the FY2021 list, #43 in FY2022, #31 in FY2023 and #17 in FY2024; down 3 since FY2024.
21	Nova Space Solutions, LLC Top NAICS codes 561210 Facilities Support Services	$129,847,904	0.8%	Rank history: not on the FY2021–FY2024 lists; new.
22	Southwest Research Institute Top NAICS codes 541330 Engineering Services 336414 Guided Missile and Space Vehicle Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$125,147,698	0.7%	Rank history: #18 in FY2021, #27 in FY2022, #34 in FY2023 and #20 in FY2024; down 2 since FY2024.
23	The Aerospace Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336414 Guided Missile and Space Vehicle Manufacturing	$115,121,993	0.7%	Rank history: #25 in FY2021, #28 in FY2022, #22 in FY2023 and #21 in FY2024; down 2 since FY2024.
24	Firefly Aerospace Inc. Top NAICS codes 481212 Nonscheduled Chartered Freight Air Transportation 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$110,533,988	0.6%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2024; up 35 since FY2024.
25	The Regents of the University of California 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing	$109,685,502	0.6%	Rank history: not on the FY2021–FY2024 lists; up 246 since FY2024.
26	Intuitive Machines, LLC 3 awardees, including Space Network Solutions LLC and Kinetx, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 517410 Satellite Telecommunications 541330 Engineering Services	$109,434,483	0.6%	Rank history: #30 in FY2021, #22 in FY2022, #42 in FY2023 and #24 in FY2024; down 2 since FY2024.
27	The Regents of the University of Colorado Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing	$99,668,888	0.6%	Rank history: #21 in FY2021, #20 in FY2022, #28 in FY2023 and #28 in FY2024; up 1 since FY2024.
28	Air Products and Chemicals, Inc. Top NAICS codes 325120 Industrial Gas Manufacturing	$97,752,154	0.6%	Rank history: #52 in FY2021, #39 in FY2022, #16 in FY2023 and #18 in FY2024; down 10 since FY2024.
29	Government of the United States 3 awardees, including Smithsonian Institution Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$96,353,384	0.6%	Rank history: #26 in FY2021, #23 in FY2022, #29 in FY2023 and not on the FY2024 list; up 99 since FY2024.
30	Aerodyne-Sgt Engineering Services, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$92,786,066	0.5%	Rank history: not on the FY2021 list, #50 in FY2022, #19 in FY2023 and #25 in FY2024; down 5 since FY2024.
31	Adnet Systems Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$84,323,564	0.5%	Rank history: #37 in FY2021, #38 in FY2022, #37 in FY2023 and #39 in FY2024; up 8 since FY2024.
32	Astrion Group, LLC 2 awardees, including Axient LLC Top NAICS codes 541380 Testing Laboratories and Services 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$82,580,443	0.5%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and #56 in FY2024; up 24 since FY2024.
33	University of Arizona Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 611310 Colleges, Universities, and Professional Schools	$74,648,252	0.4%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2024; up 47 since FY2024.
34	Teledyne Flir Unmanned Ground Systems Inc 10 awardees, including Teledyne Brown Engineering, Inc., Teledyne Digital Imaging US, Inc. and Teledyne Flir Commercial Systems Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 334516 Analytical Laboratory Instrument Manufacturing	$72,718,447	0.4%	Rank history: #28 in FY2021, #36 in FY2022, #27 in FY2023 and #29 in FY2024; down 5 since FY2024.
35	BAE Systems PLC Through BAE Systems Space & Mission Systems Inc. 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) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$71,982,637	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
36	General Electric Company 8 awardees, including Unison Industries LLC and Druck, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 333611 Turbine and Turbine Generator Set Units Manufacturing 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$69,918,623	0.4%	Rank history: #40 in FY2021, #49 in FY2022, #40 in FY2023 and #33 in FY2024; down 3 since FY2024.
37	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$69,437,865	0.4%	Rank history: #42 in FY2021, #35 in FY2022, #30 in FY2023 and #34 in FY2024; down 3 since FY2024.
38	Rsi-Quantitech JV LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$64,422,632	0.4%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2024; up 7 since FY2024.
39	Calista Corp Through Yulista Solutions, LLC Top NAICS codes 488190 Other Support Activities for Air Transportation	$61,373,352	0.4%	Rank history: #44 in FY2021, #29 in FY2022 and not on the FY2023–FY2024 lists; returned.
40	Columbus Technologies and Services, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$60,255,268	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
41	Science Applications International Corporation 2 awardees Top NAICS codes 541330 Engineering Services 541513 Computer Facilities Management Services 541512 Computer Systems Design Services	$59,726,055	0.3%	Rank history: #10 in FY2021, #11 in FY2022 and not on the FY2023–FY2024 lists; up 76 since FY2024.
42	Barrios Technology, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$59,083,542	0.3%	Rank history: #36 in FY2021, #31 in FY2022, #36 in FY2023 and #30 in FY2024; down 12 since FY2024.
43	Tetra Tech, Inc. 3 awardees, including Halvik LLC Top NAICS codes 541330 Engineering Services 541620 Environmental Consulting Services	$58,595,837	0.3%	Rank history: not on the FY2021–FY2024 lists; up 75 since FY2024.
44	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services	$55,916,146	0.3%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023 and #58 in FY2024; up 14 since FY2024.
45	Leidos Holdings, Inc. 5 awardees, including Leidos, Inc. and Dynetics, Inc. Top NAICS codes 541330 Engineering Services 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$55,783,119	0.3%	Rank history: #13 in FY2021, #21 in FY2022, #39 in FY2023 and #48 in FY2024; up 3 since FY2024.
46	Mitchell Vantage Systems LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$55,485,370	0.3%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2023 and #36 in FY2024; down 10 since FY2024.
47	Bastion Technologies, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541690 Other Scientific and Technical Consulting Services 561210 Facilities Support Services	$53,207,495	0.3%	Rank history: #47 in FY2021, #45 in FY2022, #45 in FY2023 and #54 in FY2024; up 7 since FY2024.
48	Jacobs Engineering Group Inc. 3 awardees, including Amentum Technology, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541330 Engineering Services 561210 Facilities Support Services	$48,069,065	0.3%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2024; down 38 since FY2024.
49	The University of Alabama In Huntsville Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$44,818,157	0.3%	Rank history: not on the FY2021–FY2024 lists; up 107 since FY2024.
50	CGI Federal Inc. 2 awardees, including Manufacturing Technical Solutions, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$41,834,045	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
51	Minburn Technology Group, LLC Top NAICS codes 541519 Other Computer Related Services	$41,542,067	0.2%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023 and #51 in FY2024; unchanged since FY2024.
52	Four Points Technology, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$41,396,802	0.2%	Rank history: #89 in FY2021, #92 in FY2022, #62 in FY2023 and #44 in FY2024; down 8 since FY2024.
53	PCI Productions LLC Top NAICS codes 541820 Public Relations Agencies 561110 Office Administrative Services	$35,458,482	0.2%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2024; up 12 since FY2024.
54	Analytical Mechanics Associates Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$33,847,107	0.2%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023 and #88 in FY2024; up 34 since FY2024.
55	Planet Labs PBC Through Planet Labs Federal, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$33,454,204	0.2%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and not on the FY2024 list; returned.
56	Massachusetts Institute of Technology Top NAICS codes 611310 Colleges, Universities, and Professional Schools 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$32,817,778	0.2%	Rank history: #65 in FY2021, #53 in FY2022, #66 in FY2023 and #68 in FY2024; up 12 since FY2024.
57	Arizona State University 2 awardees Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 336414 Guided Missile and Space Vehicle Manufacturing 611310 Colleges, Universities, and Professional Schools	$31,686,255	0.2%	Rank history: #58 in FY2021, #64 in FY2022, #67 in FY2023 and not on the FY2024 list; up 47 since FY2024.
58	OPR LLC Top NAICS codes 541330 Engineering Services	$29,010,416	0.2%	Rank history: #59 in FY2021, #62 in FY2022, #60 in FY2023 and #60 in FY2024; up 2 since FY2024.
59	University of Texas System 12 awardees, including University of Texas At Austin, University of Texas At Dallas and University of Texas At Arlington Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 611310 Colleges, Universities, and Professional Schools	$28,901,214	0.2%	Rank history: #84 in FY2021, #75 in FY2022, #64 in FY2023 and not on the FY2024 list; up 65 since FY2024.
60	Afognak Native Corporation 5 awardees, including Mccallie Associates, Inc., Alutiiq Essential Services LLC and Alutiiq Career Ventures LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541380 Testing Laboratories and Services 561730 Landscaping Services	$28,794,577	0.2%	Rank history: #82 in FY2021 and not on the FY2022–FY2024 lists; up 273 since FY2024.
61	Birmingham Industrial Construction, LLC Top NAICS codes 236210 Industrial Building Construction	$28,434,080	0.2%	Rank history: not on the FY2021–FY2024 lists; up 78 since FY2024.
62	Trax International Corporation Top NAICS codes 561210 Facilities Support Services	$28,187,656	0.2%	Rank history: #43 in FY2021, #37 in FY2022, #48 in FY2023 and #57 in FY2024; down 5 since FY2024.
63	The University of Iowa Top NAICS codes 541713 Research and Development in Nanotechnology	$27,558,186	0.2%	Rank history: not on the FY2021 list, #19 in FY2022 and not on the FY2023–FY2024 lists; up 58 since FY2024.
64	Colsa Corp Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$27,228,141	0.2%	Rank history: #53 in FY2021, #65 in FY2022, not on the FY2023 list and #64 in FY2024; unchanged since FY2024.
65	Bay Area Environmental Research Institute	$26,465,352	0.2%	Rank history: #76 in FY2021, #79 in FY2022, #84 in FY2023 and #66 in FY2024; up 1 since FY2024.
66	Astrobotic Technology Inc Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 481212 Nonscheduled Chartered Freight Air Transportation 541713 Research and Development in Nanotechnology	$26,124,508	0.2%	Rank history: #23 in FY2021, #18 in FY2022, #32 in FY2023 and not on the FY2024 list; up 103 since FY2024.
67	Oak Ridge Associated Universities, Incorporated Top NAICS codes 541612 Human Resources Consulting Services	$25,305,631	0.1%	Rank history: not on the FY2021 list, #85 in FY2022, #73 in FY2023 and #89 in FY2024; up 22 since FY2024.
68	Guardians of Honor, LLC Top NAICS codes 611710 Educational Support Services	$25,164,685	0.1%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and not on the FY2024 list; up 89 since FY2024.
69	Honeybee Robotics LLC Top NAICS codes 541330 Engineering Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 336414 Guided Missile and Space Vehicle Manufacturing	$24,947,843	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
70	Alcyon Technical Services (ATS) JV LLC Top NAICS codes 561210 Facilities Support Services	$24,869,490	0.1%	Rank history: not on the FY2021–FY2024 lists; up 96 since FY2024.
71	Catholic University of America (The)	$24,802,064	0.1%	Rank history: #86 in FY2021, not on the FY2022 list, #94 in FY2023 and #87 in FY2024; up 16 since FY2024.
72	Techtrans International Inc. Top NAICS codes 493110 General Warehousing and Storage 541930 Translation and Interpretation Services	$24,528,034	0.1%	Rank history: #72 in FY2021, #72 in FY2022, #80 in FY2023 and #84 in FY2024; up 12 since FY2024.
73	Messer North America Inc. Through Messer LLC Top NAICS codes 325120 Industrial Gas Manufacturing	$24,404,827	0.1%	Rank history: not on the FY2021–FY2024 lists; up 79 since FY2024.
74	Creare LLC 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541713 Research and Development in Nanotechnology	$24,269,168	0.1%	Rank history: not on the FY2021–FY2024 lists; up 176 since FY2024.
75	Katalyst Space Technologies, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$24,149,767	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
76	Commonwealth Scientific and Industrial Research Organisation Top NAICS codes 561210 Facilities Support Services	$23,234,265	0.1%	Rank history: not on the FY2021–FY2023 lists and #90 in FY2024; up 14 since FY2024.
77	University of Alaska Systems 3 awardees, including University of Alaska Fairbanks and University of Alaska Anchorage Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 561210 Facilities Support Services	$22,309,001	0.1%	Rank history: #81 in FY2021, #70 in FY2022, #77 in FY2023 and #83 in FY2024; up 6 since FY2024.
78	University of Hawaii Systems 2 awardees, including University of Hawaii Top NAICS codes 517410 Satellite Telecommunications 611310 Colleges, Universities, and Professional Schools	$22,293,603	0.1%	Rank history: #92 in FY2021, #96 in FY2022, #87 in FY2023 and not on the FY2024 list; returned.
79	Regents of the University of Michigan Top NAICS codes 336419 Other Guided Missile and Space Vehicle Parts and Auxiliary Equipment Manufacturing 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541713 Research and Development in Nanotechnology	$22,238,478	0.1%	Rank history: #98 in FY2021, not on the FY2022 list, #99 in FY2023 and #93 in FY2024; up 14 since FY2024.
80	University of California, LOS Angeles 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)	$21,949,746	0.1%	Rank history: not on the FY2021–FY2024 lists; up 40 since FY2024.
81	University System of New Hampshire Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 517919 All Other Telecommunications 611310 Colleges, Universities, and Professional Schools	$21,919,999	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
82	A & H-Ambica JV LLC Top NAICS codes 236210 Industrial Building Construction	$21,845,152	0.1%	Rank history: #66 in FY2021 and not on the FY2022–FY2024 lists; returned.
83	Advanced Space LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541713 Research and Development in Nanotechnology	$21,220,025	0.1%	Rank history: not on the FY2021–FY2024 lists; up 116 since FY2024.
84	Georgia TECH Research Corp	$20,661,411	0.1%	Rank history: #96 in FY2021, not on the FY2022–FY2023 lists and #92 in FY2024; up 8 since FY2024.
85	Healtheon, Inc. Top NAICS codes 236210 Industrial Building Construction	$20,189,829	0.1%	Rank history: #74 in FY2021, #33 in FY2022, #49 in FY2023 and #76 in FY2024; down 9 since FY2024.
86	Instituto Nacional De Tecnica Aeroespacial Esteban Terradas MDE Top NAICS codes 561210 Facilities Support Services	$19,983,986	0.1%	Rank history: not on the FY2021 list, #68 in FY2022 and not on the FY2023–FY2024 lists; up 25 since FY2024.
87	San Jose State University Research Foundation	$19,720,077	0.1%	Rank history: #94 in FY2021, not on the FY2022–FY2023 lists and #100 in FY2024; up 13 since FY2024.
88	Coldquanta Inc. Through Infleqtion Quantum, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$19,553,226	0.1%	Rank history: not on the FY2021–FY2024 lists; up 361 since FY2024.
89	The Trustees of Columbia University In the City of New York 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$18,873,688	0.1%	Rank history: #85 in FY2021, #76 in FY2022, #81 in FY2023 and #73 in FY2024; down 16 since FY2024.
90	The Leland Stanford Junior University Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology)	$18,819,715	0.1%	Rank history: not on the FY2021 list, #97 in FY2022, #85 in FY2023 and not on the FY2024 list; up 23 since FY2024.
91	University of Florida Top NAICS codes 336414 Guided Missile and Space Vehicle Manufacturing 611310 Colleges, Universities, and Professional Schools	$18,405,249	0.1%	Rank history: not on the FY2021–FY2024 lists; up 49 since FY2024.
92	Trustees of Boston University 3 awardees Top NAICS codes 611310 Colleges, Universities, and Professional Schools 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$18,402,506	0.1%	Rank history: not on the FY2021–FY2024 lists; up 58 since FY2024.
93	The Pennsylvania State University	$18,116,612	0.1%	Rank history: not on the FY2021 list, #93 in FY2022 and not on the FY2023–FY2024 lists; up 16 since FY2024.
94	Universities Space Research Association Top NAICS codes 541712 Research and Development in the Physical, Engineering, and Life Sciences (except Biotechnology) 541990 All Other Professional, Scientific, and Technical Services	$17,456,233	0.1%	Rank history: #24 in FY2021, #40 in FY2022, not on the FY2023 list and #81 in FY2024; down 13 since FY2024.
95	University of Illinois 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$17,249,280	0.1%	Rank history: not on the FY2021–FY2024 lists; up 211 since FY2024.
96	Nana Regional Corporation, Inc. 3 awardees, including Akima Global Logistics, LLC, Affigent, LLC and Akima Support Operations, LLC Top NAICS codes 561210 Facilities Support Services 541519 Other Computer Related Services	$17,130,596	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Stellar Solutions Inc. Top NAICS codes 541330 Engineering Services	$16,763,748	0.1%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #98 in FY2024; up 1 since FY2024.
98	Dynamo Technologies, LLC Through Victory Solutions, LLC Top NAICS codes 541330 Engineering Services	$16,680,018	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
99	1 - 8A Iso9001 Fedsync-Bfs, LLC Top NAICS codes 561110 Office Administrative Services	$16,443,196	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	Exelon Corporation 2 awardees, including Potomac Electric Power Co Top NAICS codes 221118 Other Electric Power Generation	$16,119,621	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 $17.3 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