Top 100 National Science Foundation Contractors, FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Leidos Holdings, Inc. Through Leidos, Inc. Top NAICS codes 561210 Facilities Support Services	$303,930,257	37.5%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$60,768,250	7.5%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2025; unchanged since FY2023.
3	Battelle Memorial Institute Top NAICS codes 561210 Facilities Support Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$51,568,954	6.4%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023 and #3 in FY2025; unchanged since FY2023.
4	By Light Professional It Services LLC Top NAICS codes 541512 Computer Systems Design Services	$14,156,319	1.7%	Rank history: #11 in FY2021, #4 in FY2022, #4 in FY2023 and #6 in FY2025; unchanged since FY2023.
5	Research Triangle Institute Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$14,037,363	1.7%	Rank history: #10 in FY2021, #7 in FY2022, #6 in FY2023 and #17 in FY2025; up 1 since FY2023.
6	Directviz Solutions, LLC Top NAICS codes 541511 Custom Computer Programming Services	$13,282,490	1.6%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023 and #4 in FY2025; up 3 since FY2023.
7	Willmeng Construction Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$12,545,913	1.5%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2025; new.
8	Synectics for Management Decisions, Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$12,290,369	1.5%	Rank history: #6 in FY2021, #5 in FY2022, #5 in FY2023 and #5 in FY2025; down 3 since FY2023.
9	Aptive Resources LLC Top NAICS codes 541613 Marketing Consulting Services	$11,332,014	1.4%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; up 132 since FY2023.
10	Federal Management Partners, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$10,545,534	1.3%	Rank history: #15 in FY2021, #13 in FY2022, #7 in FY2023 and #24 in FY2025; down 3 since FY2023.
11	National Opinion Research Center Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$10,369,619	1.3%	Rank history: #92 in FY2021, #37 in FY2022, #10 in FY2023 and #20 in FY2025; down 1 since FY2023.
12	Spatial Front Inc Top NAICS codes 541511 Custom Computer Programming Services	$9,199,682	1.1%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; new.
13	Institute for Defense Analyses Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$8,988,500	1.1%	Rank history: #12 in FY2021, #11 in FY2022, #8 in FY2023 and #18 in FY2025; down 5 since FY2023.
14	Lancer Information Solutions, LLC Top NAICS codes 541519 Other Computer Related Services	$8,887,248	1.1%	Rank history: not on the FY2021 list, #49 in FY2022, #42 in FY2023 and not on the FY2025 list; up 28 since FY2023.
15	Mathematica Inc. 2 awardees Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$8,112,105	1.0%	Rank history: #18 in FY2021, #25 in FY2022, #30 in FY2023 and not on the FY2025 list; up 15 since FY2023.
16	Accenture Federal Services LLC Top NAICS codes 541512 Computer Systems Design Services	$7,706,511	1.0%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
17	Anika Systems Incorporated Top NAICS codes 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$6,944,269	0.9%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
18	Civicactions, Inc. Top NAICS codes 541519 Other Computer Related Services	$6,330,325	0.8%	Rank history: #13 in FY2021, #26 in FY2022, #14 in FY2023 and #9 in FY2025; down 4 since FY2023.
19	Lynker Corporation Top NAICS codes 541511 Custom Computer Programming Services	$6,263,242	0.8%	Rank history: #26 in FY2021, #36 in FY2022, #39 in FY2023 and #38 in FY2025; up 20 since FY2023.
20	Pathfinder Aviation LLC Top NAICS codes 481211 Nonscheduled Chartered Passenger Air Transportation	$5,794,500	0.7%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
21	Creative Business Solutions, Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$5,637,727	0.7%	Rank history: #27 in FY2021, #16 in FY2022, #17 in FY2023 and #31 in FY2025; down 4 since FY2023.
22	Penbay Technology Group LLC Top NAICS codes 541512 Computer Systems Design Services	$5,185,890	0.6%	Rank history: not on the FY2021 list, #19 in FY2022, #31 in FY2023 and #29 in FY2025; up 9 since FY2023.
23	Criterion Systems, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$5,179,271	0.6%	Rank history: #17 in FY2021, #18 in FY2022, #19 in FY2023 and #19 in FY2025; down 4 since FY2023.
24	Kenn Borek Air Ltd 2 awardees Top NAICS codes 481219 Other Nonscheduled Air Transportation	$5,160,798	0.6%	Rank history: #20 in FY2021, #15 in FY2022, #15 in FY2023 and #12 in FY2025; down 9 since FY2023.
25	Professional Management Consulting Services LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services	$5,028,828	0.6%	Rank history: #34 in FY2021, #34 in FY2022, #33 in FY2023 and #100 in FY2025; up 8 since FY2023.
26	Amaze Technologies LLC Top NAICS codes 541330 Engineering Services	$4,884,262	0.6%	Rank history: not on the FY2021 list, #74 in FY2022, #16 in FY2023 and #60 in FY2025; down 10 since FY2023.
27	Strategic Communications LLC Top NAICS codes 541519 Other Computer Related Services	$4,173,050	0.5%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
28	Three Wire Systems, LLC Top NAICS codes 541519 Other Computer Related Services	$4,153,201	0.5%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2025; new.
29	Strategix Management LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,006,152	0.5%	Rank history: #25 in FY2021, #20 in FY2022, #22 in FY2023 and #37 in FY2025; down 7 since FY2023.
30	EDJ Associates, Inc. Top NAICS codes 561920 Convention and Trade Show Organizers	$3,964,102	0.5%	Rank history: #36 in FY2021, #32 in FY2022, #38 in FY2023 and #54 in FY2025; up 8 since FY2023.
31	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services	$3,585,268	0.4%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023 and #23 in FY2025; down 8 since FY2023.
32	Viderity Inc. Top NAICS codes 541511 Custom Computer Programming Services	$3,569,911	0.4%	Rank history: #62 in FY2021, not on the FY2022 list, #21 in FY2023 and not on the FY2025 list; down 11 since FY2023.
33	Blake Willson Group LLC Top NAICS codes 541211 Offices of Certified Public Accountants 541611 Administrative Management and General Management Consulting Services	$3,455,888	0.4%	Rank history: #85 in FY2021, not on the FY2022 list, #86 in FY2023 and #30 in FY2025; up 53 since FY2023.
34	Chainbridge Solutions Incorporated Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541519 Other Computer Related Services	$3,335,404	0.4%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023 and #32 in FY2025; down 5 since FY2023.
35	Heritage Interiors LLC Top NAICS codes 337127 Institutional Furniture Manufacturing 541513 Computer Facilities Management Services	$3,241,734	0.4%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023 and #34 in FY2025; down 11 since FY2023.
36	Metaphase Consulting LLC Top NAICS codes 541519 Other Computer Related Services	$2,940,180	0.4%	Rank history: not on the FY2021 list, #61 in FY2022, #34 in FY2023 and not on the FY2025 list; down 2 since FY2023.
37	Ensemble Government Services, LLC Top NAICS codes 541690 Other Scientific and Technical Consulting Services 541613 Marketing Consulting Services 541611 Administrative Management and General Management Consulting Services	$2,862,618	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 165 since FY2023.
38	VMD Systems Integrators Inc Top NAICS codes 541512 Computer Systems Design Services	$2,860,280	0.4%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023 and #22 in FY2025; down 13 since FY2023.
39	Rividium Inc. Top NAICS codes 541612 Human Resources Consulting Services	$2,841,658	0.4%	Rank history: not on the FY2021–FY2022 lists, #35 in FY2023 and not on the FY2025 list; down 4 since FY2023.
40	Windsor Group LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541519 Other Computer Related Services	$2,767,841	0.3%	Rank history: #22 in FY2021, #17 in FY2022, #44 in FY2023 and #91 in FY2025; up 4 since FY2023.
41	Sri International Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$2,756,294	0.3%	Rank history: #21 in FY2021, #58 in FY2022, #78 in FY2023 and #26 in FY2025; up 37 since FY2023.
42	Agility Technologies Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$2,670,993	0.3%	Rank history: #14 in FY2021, #21 in FY2022, #27 in FY2023 and #65 in FY2025; down 15 since FY2023.
43	Semanticbits LLC Through ICF Incorporated, L.L.C. Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$2,602,090	0.3%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
44	I Tech AG LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,506,906	0.3%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; up 99 since FY2023.
45	Rei Systems, Inc. 2 awardees Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,458,262	0.3%	Rank history: not on the FY2021 list, #43 in FY2022, #58 in FY2023 and #51 in FY2025; up 13 since FY2023.
46	Upslope Advisors Inc. Top NAICS codes 561920 Convention and Trade Show Organizers 541611 Administrative Management and General Management Consulting Services	$2,454,710	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
47	EFK Group, Llc. Top NAICS codes 541613 Marketing Consulting Services	$2,418,708	0.3%	Rank history: #43 in FY2021, #35 in FY2022, #46 in FY2023 and #74 in FY2025; down 1 since FY2023.
48	Fedwriters, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services	$2,406,664	0.3%	Rank history: #51 in FY2021, #59 in FY2022, #56 in FY2023 and #36 in FY2025; up 8 since FY2023.
49	Genco General Contractors of Puerto Rico Corp. Top NAICS codes 561210 Facilities Support Services	$2,357,577	0.3%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023 and #56 in FY2025; up 4 since FY2023.
50	CTW Solutions LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,263,443	0.3%	Rank history: #64 in FY2021, #39 in FY2022, #59 in FY2023 and not on the FY2025 list; up 9 since FY2023.
51	Red Carrot Inc. Top NAICS codes 541613 Marketing Consulting Services 541611 Administrative Management and General Management Consulting Services	$2,167,299	0.3%	Rank history: #73 in FY2021, #68 in FY2022, #72 in FY2023 and #63 in FY2025; up 21 since FY2023.
52	Totally Joined for Achieving Collaborative Techniques (Tjfact), LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,097,125	0.3%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #35 in FY2025; down 1 since FY2023.
53	Nana Regional Corporation Inc. 2 awardees, including Akima Data Management LLC and Affigent, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541519 Other Computer Related Services	$2,012,706	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
54	At&T Inc. Through At&T Enterprises, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,000,531	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
55	University of Maryland, College Park Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities	$2,000,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and #44 in FY2025; up 45 since FY2023.
56	International Business Machines Corporation Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,985,500	0.2%	Rank history: not on the FY2021 list, #85 in FY2022, not on the FY2023 list and #49 in FY2025; up 45 since FY2023.
57	Ebsco Industries Inc. Top NAICS codes 511130 Book Publishers	$1,968,089	0.2%	Rank history: #61 in FY2021, #71 in FY2022, #65 in FY2023 and #83 in FY2025; up 8 since FY2023.
58	National Academy of Sciences Top NAICS codes 541720 Research and Development in the Social Sciences and Humanities 541690 Other Scientific and Technical Consulting Services	$1,876,266	0.2%	Rank history: not on the FY2021–FY2022 lists, #40 in FY2023 and not on the FY2025 list; down 18 since FY2023.
59	QED Enterprises Inc. Top NAICS codes 541330 Engineering Services	$1,814,612	0.2%	Rank history: #46 in FY2021, not on the FY2022 list, #49 in FY2023 and #41 in FY2025; down 10 since FY2023.
60	Usgbf NSF LLC Top NAICS codes 531190 Lessors of Other Real Estate Property 561990 All Other Support Services	$1,784,724	0.2%	Rank history: #37 in FY2021, #48 in FY2022, #60 in FY2023 and not on the FY2025 list; unchanged since FY2023.
61	GBS Dakota IT, LLC Top NAICS codes 541512 Computer Systems Design Services	$1,728,984	0.2%	Rank history: not on the FY2021 list, #46 in FY2022, #50 in FY2023 and not on the FY2025 list; down 11 since FY2023.
62	Re3D, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,668,798	0.2%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2025; up 49 since FY2023.
63	Digital Promise Global Top NAICS codes 611710 Educational Support Services	$1,619,452	0.2%	Rank history: not on the FY2021 list, #30 in FY2022, #66 in FY2023 and not on the FY2025 list; up 3 since FY2023.
64	NTT Data Services Federal Government, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,588,752	0.2%	Rank history: #5 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
65	Minburn Technology Group, LLC Top NAICS codes 541519 Other Computer Related Services	$1,581,211	0.2%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; new.
66	Integrity Management Services Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,460,260	0.2%	Rank history: not on the FY2021 list, #57 in FY2022, #18 in FY2023 and #33 in FY2025; down 48 since FY2023.
67	Montage + Magnum, LLC Top NAICS codes 519290 Web Search Portals and All Other Information Services	$1,448,801	0.2%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
68	Air Center Helicopters, Inc. Top NAICS codes 481211 Nonscheduled Chartered Passenger Air Transportation	$1,432,754	0.2%	Rank history: #8 in FY2021, #14 in FY2022, #12 in FY2023 and not on the FY2025 list; down 56 since FY2023.
69	Colossal Contracting LLC Top NAICS codes 541519 Other Computer Related Services	$1,418,541	0.2%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2025; up 35 since FY2023.
70	Ukpeagvik Holdings Inc Through UIC Science, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$1,408,942	0.2%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023 and not on the FY2025 list; down 9 since FY2023.
71	Knowinnovation Inc Top NAICS codes 541611 Administrative Management and General Management Consulting Services 561990 All Other Support Services	$1,406,853	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
72	Prime Response, Inc. Top NAICS codes 561210 Facilities Support Services 541611 Administrative Management and General Management Consulting Services	$1,404,684	0.2%	Rank history: #59 in FY2021, #53 in FY2022, #87 in FY2023 and not on the FY2025 list; up 15 since FY2023.
73	Davis Management Group Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,400,000	0.2%	Rank history: not on the FY2021 list, #40 in FY2022, #45 in FY2023 and not on the FY2025 list; down 28 since FY2023.
74	RP Professional Services, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,381,045	0.2%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023 and #71 in FY2025; down 12 since FY2023.
75	Raye It Consulting LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,373,820	0.2%	Rank history: #55 in FY2021, #72 in FY2022, #85 in FY2023 and #67 in FY2025; up 10 since FY2023.
76	ICF Macro Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,288,814	0.2%	Rank history: not on the FY2021–FY2023 lists and #76 in FY2025; new.
77	Kardia Group LLC Top NAICS codes 611430 Professional and Management Development Training	$1,282,898	0.2%	Rank history: #83 in FY2021, #65 in FY2022, #73 in FY2023 and not on the FY2025 list; down 4 since FY2023.
78	Alluvionic Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,256,088	0.2%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
79	Prosource360 Consulting Services Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,227,573	0.2%	Rank history: #44 in FY2021, not on the FY2022 list, #57 in FY2023 and not on the FY2025 list; down 22 since FY2023.
80	Jacobs Government Services Company 2 awardees, including Jacobs Engineering Group Inc. and Amentum Technology, Inc. Top NAICS codes 541330 Engineering Services	$1,215,396	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
81	Dominion Resources Inc. 2 awardees, including Virginia Electric and Power Company Top NAICS codes 221118 Other Electric Power Generation	$1,145,821	0.1%	Rank history: #52 in FY2021, #67 in FY2022, not on the FY2023 list and not on the FY2025 list; up 24 since FY2023.
82	The Mitre Corporation Top NAICS codes 541519 Other Computer Related Services	$1,138,285	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
83	Insight Policy Research Inc Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,133,768	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
84	Whitworthkee Consulting, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,110,706	0.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and not on the FY2025 list; down 37 since FY2023.
85	Digital Science & Research Solutions Inc. Top NAICS codes 511210 Software Publishers	$1,107,910	0.1%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2025; new.
86	National Academy of Public Administration Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,097,729	0.1%	Rank history: not on the FY2021 list, #69 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
87	RMA Associates LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,056,245	0.1%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2025; new.
88	The Building People LLC Top NAICS codes 541512 Computer Systems Design Services	$1,033,744	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and #79 in FY2025; down 12 since FY2023.
89	Valencia Management Inc. Top NAICS codes 541511 Custom Computer Programming Services	$1,031,721	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2025 list; up 9 since FY2023.
90	Nippon Telegraph and Telephone Corporation Through NTT Data Services Federal Government, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,030,024	0.1%	Rank history: #35 in FY2021, #6 in FY2022, #26 in FY2023 and not on the FY2025 list; down 64 since FY2023.
91	Premier Group Services Inc. Top NAICS codes 541211 Offices of Certified Public Accountants	$1,006,518	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Lumen Technologies Government Solutions, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers	$984,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2025; up 182 since FY2023.
93	E.f. Kearney, Limited Through Kearney & Company, P.C. Top NAICS codes 541219 Other Accounting Services	$960,242	0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2025; new.
94	Enterprise Technology Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$922,727	0.1%	Rank history: #99 in FY2021, #76 in FY2022, #83 in FY2023 and #97 in FY2025; down 11 since FY2023.
95	Regents of the University of Michigan Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$902,226	0.1%	Rank history: #24 in FY2021, not on the FY2022–FY2023 lists and #96 in FY2025; up 30 since FY2023.
96	Electrosoft Services Inc. Top NAICS codes 561210 Facilities Support Services 541611 Administrative Management and General Management Consulting Services	$891,654	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #75 in FY2025; down 4 since FY2023.
97	Summome Native Ventures LLC Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$889,224	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Lord and Tucker Management Consultants, L.L.C. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$869,090	0.1%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2025; up 40 since FY2023.
99	Ventana Productions, Inc. Top NAICS codes 512110 Motion Picture and Video Production	$868,606	0.1%	Rank history: #90 in FY2021, not on the FY2022–FY2023 lists and #81 in FY2025; up 37 since FY2023.
100	Klancy Street, LLC Top NAICS codes 541110 Offices of Lawyers	$858,089	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; 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 $810 million 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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