Top 100 National Science Foundation Contractors, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Leidos Holdings, Inc. Through Leidos, Inc. Top NAICS codes 561210 Facilities Support Services	$279,335,577	42.4%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	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)	$48,750,124	7.4%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; up 1 since Aug 2024–Jul 2025.
3	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top NAICS codes 541512 Computer Systems Design Services	$46,822,624	7.1%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; down 1 since Aug 2024–Jul 2025.
4	Sagewind Capital LLC Through By Light Professional It Services LLC Top NAICS codes 541512 Computer Systems Design Services	$18,436,399	2.8%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; new, not ranked in Aug 2024–Jul 2025.
5	Directviz Solutions, LLC Top NAICS codes 541511 Custom Computer Programming Services	$16,481,254	2.5%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023, #6 in FY2024 and #4 in FY2025; down 1 since Aug 2024–Jul 2025.
6	ICF International Inc. Through ICF Incorporated, L.L.C. Top NAICS codes 541330 Engineering Services 541611 Administrative Management and General Management Consulting Services	$12,664,001	1.9%	Rank history: #16 in FY2021, #9 in FY2022, #13 in FY2023, #43 in FY2024 and #7 in FY2025; up 10 since Aug 2024–Jul 2025.
7	Synectics for Management Decisions, Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$12,592,628	1.9%	Rank history: #6 in FY2021, #5 in FY2022, #5 in FY2023, #8 in FY2024 and #5 in FY2025; unchanged since Aug 2024–Jul 2025.
8	Spatial Front Inc Top NAICS codes 541511 Custom Computer Programming Services	$8,860,697	1.3%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #8 in FY2025; down 2 since Aug 2024–Jul 2025.
9	Cherokee Nation Through Criterion Systems, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$7,757,715	1.2%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; new, not ranked in Aug 2024–Jul 2025.
10	Accenture Federal Services LLC Top NAICS codes 541512 Computer Systems Design Services	$7,626,464	1.2%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #16 in FY2025; up 1 since Aug 2024–Jul 2025.
11	Civicactions, Inc. Top NAICS codes 541519 Other Computer Related Services	$7,175,758	1.1%	Rank history: #13 in FY2021, #26 in FY2022, #14 in FY2023, #18 in FY2024 and #9 in FY2025; up 10 since Aug 2024–Jul 2025.
12	National Opinion Research Center Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$7,082,891	1.1%	Rank history: #92 in FY2021, #37 in FY2022, #10 in FY2023, #11 in FY2024 and #20 in FY2025; up 3 since Aug 2024–Jul 2025.
13	Anika Systems Incorporated Top NAICS codes 541511 Custom Computer Programming Services 541611 Administrative Management and General Management Consulting Services	$6,290,893	1.0%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #13 in FY2025; unchanged since Aug 2024–Jul 2025.
14	Pathfinder Aviation LLC Top NAICS codes 481211 Nonscheduled Chartered Passenger Air Transportation	$5,904,852	0.9%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #11 in FY2025; up 4 since Aug 2024–Jul 2025.
15	Strategic Communications LLC Top NAICS codes 541519 Other Computer Related Services	$5,772,750	0.9%	Rank history: not on the FY2021–FY2023 lists, #27 in FY2024 and #14 in FY2025; up 19 since Aug 2024–Jul 2025.
16	Emerging Technologies Solutions & Services Stars III LLC Top NAICS codes 541512 Computer Systems Design Services	$5,709,506	0.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
17	Research Triangle Institute Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$5,319,160	0.8%	Rank history: #10 in FY2021, #7 in FY2022, #6 in FY2023, #5 in FY2024 and #17 in FY2025; down 8 since Aug 2024–Jul 2025.
18	Kenn Borek Air Ltd Top NAICS codes 481219 Other Nonscheduled Air Transportation	$4,621,620	0.7%	Rank history: #20 in FY2021, #15 in FY2022, #15 in FY2023, #24 in FY2024 and #12 in FY2025; down 8 since Aug 2024–Jul 2025.
19	Lynker Corporation Top NAICS codes 541511 Custom Computer Programming Services	$4,601,313	0.7%	Rank history: #26 in FY2021, #36 in FY2022, #39 in FY2023, #19 in FY2024 and #38 in FY2025; unchanged since Aug 2024–Jul 2025.
20	Totally Joined for Achieving Collaborative Techniques (Tjfact), LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$4,582,065	0.7%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023, #52 in FY2024 and #35 in FY2025; up 17 since Aug 2024–Jul 2025.
21	Heritage Interiors LLC Top NAICS codes 337127 Institutional Furniture Manufacturing 541513 Computer Facilities Management Services	$4,546,424	0.7%	Rank history: not on the FY2021–FY2022 lists, #24 in FY2023, #35 in FY2024 and #34 in FY2025; up 11 since Aug 2024–Jul 2025.
22	Montage + Magnum, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 519290 Web Search Portals and All Other Information Services	$4,302,773	0.7%	Rank history: not on the FY2021–FY2023 lists, #67 in FY2024 and #21 in FY2025; up 3 since Aug 2024–Jul 2025.
23	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services	$4,163,685	0.6%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023, #31 in FY2024 and #23 in FY2025; up 10 since Aug 2024–Jul 2025.
24	Thornton Tomasetti, Inc. Top NAICS codes 541330 Engineering Services	$3,742,168	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
25	Mathematica Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$3,610,801	0.5%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; new, not ranked in Aug 2024–Jul 2025.
26	Metgreen Solutions Inc. Top NAICS codes 541519 Other Computer Related Services	$3,553,098	0.5%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; up 152 since Aug 2024–Jul 2025.
27	Blake Willson Group LLC Top NAICS codes 541211 Offices of Certified Public Accountants 541611 Administrative Management and General Management Consulting Services	$3,525,570	0.5%	Rank history: #85 in FY2021, not on the FY2022 list, #86 in FY2023, #33 in FY2024 and #30 in FY2025; down 7 since Aug 2024–Jul 2025.
28	Penbay Technology Group LLC Top NAICS codes 541512 Computer Systems Design Services	$3,378,258	0.5%	Rank history: not on the FY2021 list, #19 in FY2022, #31 in FY2023, #22 in FY2024 and #29 in FY2025; down 1 since Aug 2024–Jul 2025.
29	Sri International Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$3,364,762	0.5%	Rank history: #21 in FY2021, #58 in FY2022, #78 in FY2023, #41 in FY2024 and #26 in FY2025; up 10 since Aug 2024–Jul 2025.
30	Westat, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$3,300,460	0.5%	Rank history: #9 in FY2021, #12 in FY2022, #55 in FY2023, not on the FY2024 list and #15 in FY2025; down 18 since Aug 2024–Jul 2025.
31	Chainbridge Solutions Incorporated Top NAICS codes 541519 Other Computer Related Services	$3,285,538	0.5%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023, #34 in FY2024 and #32 in FY2025; up 5 since Aug 2024–Jul 2025.
32	Federal Management Partners, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541512 Computer Systems Design Services	$3,016,219	0.5%	Rank history: #15 in FY2021, #13 in FY2022, #7 in FY2023, #10 in FY2024 and #24 in FY2025; down 10 since Aug 2024–Jul 2025.
33	VMD Systems Integrators LLC Top NAICS codes 541512 Computer Systems Design Services	$2,452,015	0.4%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023, #38 in FY2024 and #22 in FY2025; down 9 since Aug 2024–Jul 2025.
34	Fusion Mastech Incorporated Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,445,610	0.4%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; new, not ranked in Aug 2024–Jul 2025.
35	QED Enterprises Inc. Top NAICS codes 541330 Engineering Services	$2,320,375	0.4%	Rank history: #46 in FY2021, not on the FY2022 list, #49 in FY2023, #59 in FY2024 and #41 in FY2025; up 5 since Aug 2024–Jul 2025.
36	Aptive Resources LLC Top NAICS codes 541613 Marketing Consulting Services	$2,162,139	0.3%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #28 in FY2025; down 5 since Aug 2024–Jul 2025.
37	Unico LLC Top NAICS codes 561210 Facilities Support Services	$2,035,083	0.3%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
38	Nana Regional Corporation, Inc. Through Akima Data Management LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$2,005,891	0.3%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; up 127 since Aug 2024–Jul 2025.
39	Iridescent Sensors Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,000,000	0.3%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; up 5 since Aug 2024–Jul 2025.
40	Teledyne Flir Unmanned Ground Systems Inc Through Teledyne Flir Defense, LLC Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$2,000,000	0.3%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; up 2 since Aug 2024–Jul 2025.
41	Delta Bravo Artificial Intelligence Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,999,692	0.3%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 6 since Aug 2024–Jul 2025.
42	Geosyntec Consultants, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,990,230	0.3%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; up 4 since Aug 2024–Jul 2025.
43	Priwils Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services	$1,946,713	0.3%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; new, not ranked in Aug 2024–Jul 2025.
44	Integrity Management Services Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,840,724	0.3%	Rank history: not on the FY2021 list, #57 in FY2022, #18 in FY2023, #66 in FY2024 and #33 in FY2025; down 15 since Aug 2024–Jul 2025.
45	Digital Science & Research Solutions Inc. Top NAICS codes 513210 Software Publishers	$1,826,236	0.3%	Rank history: not on the FY2021–FY2023 lists, #85 in FY2024 and #54 in FY2025; up 6 since Aug 2024–Jul 2025.
46	Minburn Technology Group, LLC Top NAICS codes 541519 Other Computer Related Services	$1,825,871	0.3%	Rank history: not on the FY2021–FY2023 lists, #65 in FY2024 and #50 in FY2025; up 3 since Aug 2024–Jul 2025.
47	Rei Systems, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,804,729	0.3%	Rank history: not on the FY2021 list, #43 in FY2022, #58 in FY2023, #45 in FY2024 and #52 in FY2025; up 15 since Aug 2024–Jul 2025.
48	TSC Management, LLC Top NAICS codes 561499 All Other Business Support Services	$1,719,360	0.3%	Rank history: not on the FY2021 list, #99 in FY2022, not on the FY2023–FY2024 lists and #73 in FY2025; up 92 since Aug 2024–Jul 2025.
49	Lexisnexis Special Services Inc 3 awardees, including Elsevier Inc., Elsevier B.V. and Relx Inc. Top NAICS codes 513120 Periodical Publishers 516210 Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers 511130 Book Publishers	$1,644,827	0.2%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 31 since Aug 2024–Jul 2025.
50	Alluvionic Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,633,097	0.2%	Rank history: not on the FY2021–FY2023 lists, #78 in FY2024 and #42 in FY2025; up 4 since Aug 2024–Jul 2025.
51	I Tech AG LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,614,870	0.2%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #59 in FY2025; new, not ranked in Aug 2024–Jul 2025.
52	Ldss, Inc. Top NAICS codes 611430 Professional and Management Development Training	$1,603,450	0.2%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; up 7 since Aug 2024–Jul 2025.
53	Sweetsense Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,599,974	0.2%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; down 8 since Aug 2024–Jul 2025.
54	GBS Solutions Corp Top NAICS codes 541511 Custom Computer Programming Services	$1,577,524	0.2%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; up 129 since Aug 2024–Jul 2025.
55	Genco General Contractors of Puerto Rico Corp. Top NAICS codes 236220 Commercial and Institutional Building Construction	$1,377,584	0.2%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023, #49 in FY2024 and #57 in FY2025; new, not ranked in Aug 2024–Jul 2025.
56	Lawelawe Technology Services, Inc. Top NAICS codes 561110 Office Administrative Services	$1,320,208	0.2%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 42 since Aug 2024–Jul 2025.
57	Epic Systems Inc. Top NAICS codes 541511 Custom Computer Programming Services	$1,228,812	0.2%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 37 since Aug 2024–Jul 2025.
58	Lumen Technologies, Inc. Through Lumen Technologies Government Solutions, Inc. Top NAICS codes 517110 Wired Telecommunications Carriers	$1,218,686	0.2%	Rank history: #89 in FY2021, not on the FY2022 list, #54 in FY2023, not on the FY2024 list and #71 in FY2025; new, not ranked in Aug 2024–Jul 2025.
59	Red River Technology LLC Top NAICS codes 541519 Other Computer Related Services	$1,184,345	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
60	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$1,145,281	0.2%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023, not on the FY2024 list and #83 in FY2025; up 36 since Aug 2024–Jul 2025.
61	RP Professional Services, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,126,920	0.2%	Rank history: not on the FY2021–FY2022 lists, #62 in FY2023, #74 in FY2024 and #72 in FY2025; up 22 since Aug 2024–Jul 2025.
62	Ebsco Industries Inc. Through Ebsco Information Services, LLC Top NAICS codes 519290 Web Search Portals and All Other Information Services	$1,102,657	0.2%	Rank history: #61 in FY2021, #71 in FY2022, #65 in FY2023, #57 in FY2024 and #51 in FY2025; up 22 since Aug 2024–Jul 2025.
63	Agility Technologies Inc. Top NAICS codes 541512 Computer Systems Design Services 541511 Custom Computer Programming Services 541519 Other Computer Related Services	$1,083,465	0.2%	Rank history: #14 in FY2021, #21 in FY2022, #27 in FY2023, #42 in FY2024 and #67 in FY2025; down 7 since Aug 2024–Jul 2025.
64	Windsor Group LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541519 Other Computer Related Services	$1,058,996	0.2%	Rank history: #22 in FY2021, #17 in FY2022, #44 in FY2023, #40 in FY2024 and #89 in FY2025; up 27 since Aug 2024–Jul 2025.
65	Institute for Defense Analyses Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$967,684	0.1%	Rank history: #12 in FY2021, #11 in FY2022, #8 in FY2023, #13 in FY2024 and #18 in FY2025; down 51 since Aug 2024–Jul 2025.
66	Soliel LLC Top NAICS codes 541512 Computer Systems Design Services	$933,829	0.1%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; up 23 since Aug 2024–Jul 2025.
67	Red Carrot Inc. Top NAICS codes 541613 Marketing Consulting Services	$831,617	0.1%	Rank history: #73 in FY2021, #68 in FY2022, #72 in FY2023, #51 in FY2024 and #64 in FY2025; down 6 since Aug 2024–Jul 2025.
68	Re3D, Inc. Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$829,548	0.1%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #56 in FY2025; down 15 since Aug 2024–Jul 2025.
69	Xtec, Incorporated Top NAICS codes 541519 Other Computer Related Services	$793,371	0.1%	Rank history: not on the FY2021–FY2025 lists; up 140 since Aug 2024–Jul 2025.
70	The Building People LLC Top NAICS codes 541512 Computer Systems Design Services	$791,899	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023, #88 in FY2024 and #79 in FY2025; up 7 since Aug 2024–Jul 2025.
71	Electrosoft Services Inc. Top NAICS codes 561210 Facilities Support Services	$778,179	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023, #96 in FY2024 and #76 in FY2025; up 3 since Aug 2024–Jul 2025.
72	Fedwriters, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$727,229	0.1%	Rank history: #51 in FY2021, #59 in FY2022, #56 in FY2023, #48 in FY2024 and #36 in FY2025; down 22 since Aug 2024–Jul 2025.
73	Architechture Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$719,783	0.1%	Rank history: not on the FY2021–FY2025 lists; up 83 since Aug 2024–Jul 2025.
74	Colossal Contracting LLC Top NAICS codes 541519 Other Computer Related Services	$719,411	0.1%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and #86 in FY2025; up 14 since Aug 2024–Jul 2025.
75	G2 Global Solutions, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$696,000	0.1%	Rank history: not on the FY2021–FY2025 lists; up 25 since Aug 2024–Jul 2025.
76	CMA Technology Inc. Top NAICS codes 541519 Other Computer Related Services	$666,903	0.1%	Rank history: #33 in FY2021, #38 in FY2022, #20 in FY2023, not on the FY2024 list and #60 in FY2025; down 19 since Aug 2024–Jul 2025.
77	Govsmart, Inc. Top NAICS codes 541519 Other Computer Related Services	$660,673	0.1%	Rank history: #39 in FY2021, not on the FY2022–FY2024 lists and #84 in FY2025; up 83 since Aug 2024–Jul 2025.
78	Bahfed Corp Top NAICS codes 541519 Other Computer Related Services	$615,877	0.1%	Rank history: #58 in FY2021, #51 in FY2022, #82 in FY2023, not on the FY2024 list and #97 in FY2025; up 76 since Aug 2024–Jul 2025.
79	Valencia Management Inc. Top NAICS codes 541511 Custom Computer Programming Services	$593,146	0.1%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023, #89 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
80	Mcbride, Lock & Associates, LLC Top NAICS codes 541211 Offices of Certified Public Accountants	$562,380	0.1%	Rank history: not on the FY2021–FY2025 lists; up 21 since Aug 2024–Jul 2025.
81	Redhawk It Solutions, LLC Top NAICS codes 541519 Other Computer Related Services	$552,807	0.1%	Rank history: not on the FY2021–FY2025 lists; up 116 since Aug 2024–Jul 2025.
82	Carrot Search S C Top NAICS codes 513210 Software Publishers	$548,800	0.1%	Rank history: not on the FY2021–FY2025 lists; up 54 since Aug 2024–Jul 2025.
83	Dominion Energy, Inc. 2 awardees, including Virginia Electric and Power Company Top NAICS codes 221118 Other Electric Power Generation	$527,064	0.1%	Rank history: #52 in FY2021, #67 in FY2022, not on the FY2023 list, #81 in FY2024 and not on the FY2025 list; down 17 since Aug 2024–Jul 2025.
84	Ventana Productions, Inc. Top NAICS codes 512110 Motion Picture and Video Production	$504,351	0.1%	Rank history: #90 in FY2021, not on the FY2022–FY2023 lists, #99 in FY2024 and #80 in FY2025; up 6 since Aug 2024–Jul 2025.
85	Dynamic Systems Inc. Top NAICS codes 541519 Other Computer Related Services	$497,871	0.1%	Rank history: not on the FY2021–FY2025 lists; up 35 since Aug 2024–Jul 2025.
86	CTG Federal, LLC Top NAICS codes 541519 Other Computer Related Services	$494,092	0.1%	Rank history: not on the FY2021–FY2025 lists; up 25 since Aug 2024–Jul 2025.
87	Scope It Consulting, LLC Top NAICS codes 541512 Computer Systems Design Services	$489,792	0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023, not on the FY2024 list and #99 in FY2025; up 50 since Aug 2024–Jul 2025.
88	Usgbf NSF LLC Top NAICS codes 561990 All Other Support Services 531190 Lessors of Other Real Estate Property	$484,500	0.1%	Rank history: #37 in FY2021, #48 in FY2022, #60 in FY2023, #60 in FY2024 and not on the FY2025 list; down 13 since Aug 2024–Jul 2025.
89	Lord and Tucker Management Consultants, L.L.C. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$469,288	0.1%	Rank history: not on the FY2021–FY2023 lists, #98 in FY2024 and #77 in FY2025; down 26 since Aug 2024–Jul 2025.
90	West Publishing Corporation 2 awardees, including Clarivate Analytics (Us) LLC Top NAICS codes 519290 Web Search Portals and All Other Information Services 519190 All Other Information Services	$468,185	0.1%	Rank history: not on the FY2021–FY2025 lists; up 116 since Aug 2024–Jul 2025.
91	BLH Technologies Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$443,000	0.1%	Rank history: #63 in FY2021, not on the FY2022–FY2024 lists and #93 in FY2025; up 14 since Aug 2024–Jul 2025.
92	Enterprise Technology Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$440,674	0.1%	Rank history: #99 in FY2021, #76 in FY2022, #83 in FY2023, #94 in FY2024 and #95 in FY2025; down 19 since Aug 2024–Jul 2025.
93	Raye It Consulting LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$435,808	0.1%	Rank history: #55 in FY2021, #72 in FY2022, #85 in FY2023, #75 in FY2024 and #69 in FY2025; down 25 since Aug 2024–Jul 2025.
94	Executive Information Systems, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$434,687	0.1%	Rank history: not on the FY2021–FY2025 lists; up 25 since Aug 2024–Jul 2025.
95	Distributed Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$425,879	0.1%	Rank history: not on the FY2021 list, #94 in FY2022, not on the FY2023–FY2024 lists and #81 in FY2025; up 19 since Aug 2024–Jul 2025.
96	Creative Business Solutions, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$420,251	0.1%	Rank history: #27 in FY2021, #16 in FY2022, #17 in FY2023, #21 in FY2024 and #31 in FY2025; down 70 since Aug 2024–Jul 2025.
97	JMS Naval Architects LLC Top NAICS codes 541330 Engineering Services	$400,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
98	Widepoint Integrated Solutions Corp Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite)	$398,345	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 10 since Aug 2024–Jul 2025.
99	Rape, Abuse and Incest National Network Rainn Top NAICS codes 624190 Other Individual and Family Services	$396,550	0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; up 4 since Aug 2024–Jul 2025.
100	Tinker Salome Chris Enterprise, LLC Top NAICS codes 541211 Offices of Certified Public Accountants 541611 Administrative Management and General Management Consulting Services	$386,123	0.1%	Rank history: not on the FY2021–FY2025 lists; up 30 since Aug 2024–Jul 2025.

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 $659 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. 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.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Aug 2024–Jul 2025. "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.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

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