Top 100 Nuclear Regulatory Commission Contractors, Jul 2025–Jun 2026

Name: Top 100 Nuclear Regulatory Commission Contractors, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Agency page on GovTribe

The top 10 won 48% of Nuclear Regulatory Commission contract dollars from July 2025 through June 2026

Contract obligations: $222,220,965 Net of deobligations, by the Nuclear Regulatory Commission and its offices
Contractors: 222 Parent companies with an obligation
Largest contractor: Teksynap Corporation $38.4 million, 17.0% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Teksynap Corporation Top NAICS codes 541512 Computer Systems Design Services	$38,356,302	17.0%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; up 1 since Jul 2024–Jun 2025.
2	Leidos Holdings, Inc. Through Leidos, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$17,359,047	7.7%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; down 1 since Jul 2024–Jun 2025.
3	The Timken Company Through CGI Federal Inc. Top NAICS codes 541519 Other Computer Related Services	$9,958,090	4.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
4	Oasis Systems, LLC Top NAICS codes 541519 Other Computer Related Services	$7,387,997	3.3%	Rank history: #4 in FY2021, #4 in FY2022, #3 in FY2023, #4 in FY2024 and #3 in FY2025; unchanged since Jul 2024–Jun 2025.
5	Astrion Group, LLC Top NAICS codes 541519 Other Computer Related Services	$7,031,988	3.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
6	MCP Computer Products Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$6,901,039	3.1%	Rank history: #14 in FY2021, #7 in FY2022, #14 in FY2023, #13 in FY2024 and #17 in FY2025; up 3 since Jul 2024–Jun 2025.
7	Dell Technologies Inc. 2 awardees, including Dell Federal Systems L.P Top NAICS codes 511210 Software Publishers	$5,802,988	2.6%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #6 in FY2025; up 1 since Jul 2024–Jun 2025.
8	Nve, Inc. Top NAICS codes 561210 Facilities Support Services	$5,587,503	2.5%	Rank history: not on the FY2021–FY2022 lists, #8 in FY2023, #14 in FY2024 and #12 in FY2025; up 16 since Jul 2024–Jun 2025.
9	Aegis.Net Inc Top NAICS codes 541519 Other Computer Related Services	$4,795,334	2.1%	Rank history: not on the FY2021–FY2023 lists, #8 in FY2024 and #7 in FY2025; up 1 since Jul 2024–Jun 2025.
10	Northramp LLC Top NAICS codes 541511 Custom Computer Programming Services	$4,472,964	2.0%	Rank history: #5 in FY2021, #9 in FY2022, #5 in FY2023, #10 in FY2024 and #8 in FY2025; up 7 since Jul 2024–Jun 2025.
11	Puyenpa Technologies LLC 2 awardees, including Puyenpa Services, LLC Top NAICS codes 541519 Other Computer Related Services 561621 Security Systems Services (except Locksmiths)	$3,938,959	1.8%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; new, not ranked in Jul 2024–Jun 2025.
12	Immersive Concepts L.L.C. Top NAICS codes 541519 Other Computer Related Services 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$3,887,003	1.7%	Rank history: #21 in FY2021, #16 in FY2022, #22 in FY2023, #16 in FY2024 and #9 in FY2025; up 10 since Jul 2024–Jun 2025.
13	CGI Federal Inc. Top NAICS codes 541519 Other Computer Related Services	$3,862,715	1.7%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #5 in FY2025; down 10 since Jul 2024–Jun 2025.
14	CTG Federal, LLC Top NAICS codes 541519 Other Computer Related Services	$3,612,663	1.6%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023, #19 in FY2024 and #16 in FY2025; up 4 since Jul 2024–Jun 2025.
15	Gcr-Dean LLC Top NAICS codes 561210 Facilities Support Services	$3,558,357	1.6%	Rank history: not on the FY2021 list, #18 in FY2022, #17 in FY2023, #21 in FY2024 and #19 in FY2025; up 4 since Jul 2024–Jun 2025.
16	Verizon 7 awardees, including Verizon Business Network Services LLC, Verizon Pennsylvania LLC and Verizon Communications Inc. Top NAICS codes 517110 Wired Telecommunications Carriers 517111 Wired Telecommunications Carriers	$3,377,082	1.5%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #4 in FY2025; down 9 since Jul 2024–Jun 2025.
17	ManTech International Corporation Through Unison Software Inc. Top NAICS codes 511210 Software Publishers	$3,370,000	1.5%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #11 in FY2025; down 5 since Jul 2024–Jun 2025.
18	Southwest Research Institute Top NAICS codes 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) 541380 Testing Laboratories and Services	$3,243,401	1.4%	Rank history: #8 in FY2021, #11 in FY2022, #6 in FY2023, #7 in FY2024 and #21 in FY2025; down 12 since Jul 2024–Jun 2025.
19	Alvarez LLC Top NAICS codes 541519 Other Computer Related Services	$3,164,867	1.4%	Rank history: #71 in FY2021, #63 in FY2022, not on the FY2023–FY2024 lists and #13 in FY2025; up 126 since Jul 2024–Jun 2025.
20	Advanced Systems Technology & Management, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$3,016,375	1.3%	Rank history: #13 in FY2021, #12 in FY2022, #9 in FY2023, #12 in FY2024 and #44 in FY2025; down 4 since Jul 2024–Jun 2025.
21	DNI Emerging Technologies, LLC Top NAICS codes 541519 Other Computer Related Services	$2,754,946	1.2%	Rank history: not on the FY2021–FY2023 lists, #28 in FY2024 and #22 in FY2025; up 5 since Jul 2024–Jun 2025.
22	Huron Consulting Group Inc. Through Huron Consulting Services LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541511 Custom Computer Programming Services	$2,747,797	1.2%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #14 in FY2025; down 8 since Jul 2024–Jun 2025.
23	Potomac Electric Power Co Top NAICS codes 221118 Other Electric Power Generation	$2,635,097	1.2%	Rank history: not on the FY2021–FY2023 lists, #29 in FY2024 and #15 in FY2025; down 2 since Jul 2024–Jun 2025.
24	Four LLC Top NAICS codes 541519 Other Computer Related Services	$2,278,701	1.0%	Rank history: #20 in FY2021, #29 in FY2022, #24 in FY2023, #5 in FY2024 and #10 in FY2025; down 19 since Jul 2024–Jun 2025.
25	Riva Solutions Inc Top NAICS codes 541614 Process, Physical Distribution, and Logistics Consulting Services	$1,990,849	0.9%	Rank history: not on the FY2021–FY2023 lists, #90 in FY2024 and #27 in FY2025; up 44 since Jul 2024–Jun 2025.
26	Cube Root Rk&K JV LLC Through Cube Root Corporation Top NAICS codes 541513 Computer Facilities Management Services	$1,883,000	0.8%	Rank history: not on the FY2021–FY2023 lists, #75 in FY2024 and #50 in FY2025; up 53 since Jul 2024–Jun 2025.
27	Portmanteau JV LLC Top NAICS codes 541512 Computer Systems Design Services	$1,865,000	0.8%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and #23 in FY2025; up 38 since Jul 2024–Jun 2025.
28	ATP Gov, LLC Top NAICS codes 541519 Other Computer Related Services	$1,831,580	0.8%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023, not on the FY2024 list and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
29	Mythics Inc. 2 awardees, including Emergent, LLC Top NAICS codes 541519 Other Computer Related Services	$1,792,802	0.8%	Rank history: #16 in FY2021, #20 in FY2022, #32 in FY2023, #35 in FY2024 and #26 in FY2025; unchanged since Jul 2024–Jun 2025.
30	Information Systems Laboratories, Inc. 2 awardees Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$1,681,709	0.7%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #25 in FY2025; down 17 since Jul 2024–Jun 2025.
31	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,600,603	0.7%	Rank history: #79 in FY2021, #51 in FY2022, #99 in FY2023, #33 in FY2024 and #30 in FY2025; down 3 since Jul 2024–Jun 2025.
32	Oak Ridge Associated Universities, Incorporated Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,527,403	0.7%	Rank history: #36 in FY2021, #28 in FY2022, #37 in FY2023, #22 in FY2024 and #34 in FY2025; up 3 since Jul 2024–Jun 2025.
33	Dexian, LLC Through Disys Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,522,658	0.7%	Rank history: not on the FY2021–FY2023 lists, #88 in FY2024 and #28 in FY2025; up 39 since Jul 2024–Jun 2025.
34	Infinetix Inc. Top NAICS codes 541519 Other Computer Related Services	$1,515,418	0.7%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023, #25 in FY2024 and #52 in FY2025; down 3 since Jul 2024–Jun 2025.
35	Carahsoft Technology Corp Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541519 Other Computer Related Services 511210 Software Publishers	$1,505,836	0.7%	Rank history: #54 in FY2021, #46 in FY2022, #48 in FY2023, #37 in FY2024 and #51 in FY2025; up 17 since Jul 2024–Jun 2025.
36	Renaissance Code Development LLC Top NAICS codes 541330 Engineering Services 541511 Custom Computer Programming Services 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)	$1,472,927	0.7%	Rank history: #82 in FY2021, #82 in FY2022, #46 in FY2023, #79 in FY2024 and #42 in FY2025; up 37 since Jul 2024–Jun 2025.
37	Numark Associates, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 541690 Other Scientific and Technical Consulting Services	$1,422,050	0.6%	Rank history: #56 in FY2021, #75 in FY2022, #31 in FY2023, #51 in FY2024 and #60 in FY2025; up 39 since Jul 2024–Jun 2025.
38	SD Solutions LLC Top NAICS codes 541618 Other Management Consulting Services	$1,370,276	0.6%	Rank history: #39 in FY2021, #81 in FY2022, #33 in FY2023, #46 in FY2024 and #40 in FY2025; up 9 since Jul 2024–Jun 2025.
39	Equinix LLC Top NAICS codes 541519 Other Computer Related Services	$1,365,165	0.6%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and #31 in FY2025; up 52 since Jul 2024–Jun 2025.
40	G2Sf LLC Top NAICS codes 541513 Computer Facilities Management Services	$1,347,907	0.6%	Rank history: #24 in FY2021, not on the FY2022–FY2023 lists, #57 in FY2024 and #33 in FY2025; down 15 since Jul 2024–Jun 2025.
41	Sault Tribe Government Solutions, LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$1,275,000	0.6%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; new, not ranked in Jul 2024–Jun 2025.
42	August Schell Enterprises, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,263,639	0.6%	Rank history: #87 in FY2021, not on the FY2022 list, #95 in FY2023, #67 in FY2024 and #45 in FY2025; up 21 since Jul 2024–Jun 2025.
43	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$1,189,344	0.5%	Rank history: not on the FY2021 list, #43 in FY2022, #36 in FY2023, #80 in FY2024 and #39 in FY2025; up 43 since Jul 2024–Jun 2025.
44	Translation Excellence Inc. Top NAICS codes 541930 Translation and Interpretation Services	$1,177,976	0.5%	Rank history: #99 in FY2021, #45 in FY2022, #50 in FY2023, #40 in FY2024 and #29 in FY2025; down 11 since Jul 2024–Jun 2025.
45	Arctic Slope Regional Corporation Through Asrc Federal Data Networx, LLC Top NAICS codes 517919 All Other Telecommunications	$1,119,517	0.5%	Rank history: #43 in FY2021, not on the FY2022–FY2023 lists, #52 in FY2024 and #37 in FY2025; down 4 since Jul 2024–Jun 2025.
46	Washington Metropolitan Area Transit Authority Top NAICS codes 485111 Mixed Mode Transit Systems	$1,104,000	0.5%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; up 190 since Jul 2024–Jun 2025.
47	Semanticbits LLC 2 awardees, including ICF Incorporated, L.L.C. Top NAICS codes 541690 Other Scientific and Technical Consulting Services 541611 Administrative Management and General Management Consulting Services	$1,093,603	0.5%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #66 in FY2025; down 17 since Jul 2024–Jun 2025.
48	Sikich CPA LLC Top NAICS codes 541219 Other Accounting Services	$1,069,356	0.5%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; down 11 since Jul 2024–Jun 2025.
49	Avyance LLC Top NAICS codes 611710 Educational Support Services	$1,067,185	0.5%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #58 in FY2025; up 40 since Jul 2024–Jun 2025.
50	R I Solutions, LLC Top NAICS codes 541519 Other Computer Related Services	$992,874	0.4%	Rank history: not on the FY2021 list, #40 in FY2022, #25 in FY2023, #17 in FY2024 and #32 in FY2025; down 39 since Jul 2024–Jun 2025.
51	V3Gate, LLC Top NAICS codes 541519 Other Computer Related Services	$946,260	0.4%	Rank history: not on the FY2021 list, #73 in FY2022, #58 in FY2023, #47 in FY2024 and #47 in FY2025; down 12 since Jul 2024–Jun 2025.
52	Data Systems Analysts Inc. Top NAICS codes 541512 Computer Systems Design Services	$901,100	0.4%	Rank history: #42 in FY2021, #33 in FY2022, #38 in FY2023, #99 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
53	Bahfed Corp Top NAICS codes 541519 Other Computer Related Services	$862,051	0.4%	Rank history: #44 in FY2021, not on the FY2022 list, #44 in FY2023, #31 in FY2024 and #48 in FY2025; down 26 since Jul 2024–Jun 2025.
54	OCT Consulting LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$830,849	0.4%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023, #82 in FY2024 and #46 in FY2025; down 10 since Jul 2024–Jun 2025.
55	Kikiktagruk Inupiat Corp Through Midnight Sun Technologies LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$818,831	0.4%	Rank history: #64 in FY2021, #48 in FY2022, #45 in FY2023, not on the FY2024 list and #49 in FY2025; up 5 since Jul 2024–Jun 2025.
56	Tyson Project Management Group LLC Top NAICS codes 561210 Facilities Support Services	$811,000	0.4%	Rank history: not on the FY2021 list, #86 in FY2022, #83 in FY2023, #54 in FY2024 and #70 in FY2025; down 10 since Jul 2024–Jun 2025.
57	Advanced Computer Concepts, Inc. Top NAICS codes 541519 Other Computer Related Services	$794,933	0.4%	Rank history: #52 in FY2021, not on the FY2022–FY2024 lists and #64 in FY2025; up 174 since Jul 2024–Jun 2025.
58	Business Management Associates Inc. Top NAICS codes 541612 Human Resources Consulting Services 541519 Other Computer Related Services	$773,811	0.3%	Rank history: #32 in FY2021, #30 in FY2022, #29 in FY2023, #87 in FY2024 and #36 in FY2025; down 35 since Jul 2024–Jun 2025.
59	At&T Inc. 3 awardees, including At&T Enterprises, LLC and Att Mobility LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite) 517112 Wireless Telecommunications Carriers (except Satellite)	$709,167	0.3%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #59 in FY2025; up 5 since Jul 2024–Jun 2025.
60	Thundercat Technology LLC Top NAICS codes 541519 Other Computer Related Services	$689,933	0.3%	Rank history: not on the FY2021–FY2022 lists, #42 in FY2023, #30 in FY2024 and #43 in FY2025; down 17 since Jul 2024–Jun 2025.
61	LPS Aqiwo 8A JV LLC Top NAICS codes 541512 Computer Systems Design Services	$606,459	0.3%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 17 since Jul 2024–Jun 2025.
62	Ansys Inc. Top NAICS codes 513210 Software Publishers	$583,414	0.3%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	AFG Group Inc. Top NAICS codes 541330 Engineering Services	$583,098	0.3%	Rank history: not on the FY2021 list, #77 in FY2022 and not on the FY2023–FY2025 lists; up 57 since Jul 2024–Jun 2025.
64	The Educe Group Inc. Top NAICS codes 541511 Custom Computer Programming Services	$581,800	0.3%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Jul 2024–Jun 2025.
65	Eagle Integrated Services, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$579,249	0.3%	Rank history: #46 in FY2021, #25 in FY2022, #30 in FY2023, #39 in FY2024 and #56 in FY2025; down 15 since Jul 2024–Jun 2025.
66	Assyst Inc. Top NAICS codes 541519 Other Computer Related Services	$564,605	0.3%	Rank history: not on the FY2021–FY2023 lists, #95 in FY2024 and #75 in FY2025; up 37 since Jul 2024–Jun 2025.
67	Union5 LLC Top NAICS codes 541519 Other Computer Related Services	$559,500	0.2%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; unchanged since Jul 2024–Jun 2025.
68	Clark Baty Associates Inc. Top NAICS codes 541512 Computer Systems Design Services	$544,748	0.2%	Rank history: not on the FY2021–FY2022 lists, #39 in FY2023, #44 in FY2024 and #41 in FY2025; down 32 since Jul 2024–Jun 2025.
69	Code Plus, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$503,054	0.2%	Rank history: #48 in FY2021, #32 in FY2022, #35 in FY2023, #41 in FY2024 and #72 in FY2025; up 36 since Jul 2024–Jun 2025.
70	Institute of Nuclear Power Operations, Inc. Top NAICS codes 541330 Engineering Services	$484,951	0.2%	Rank history: #73 in FY2021, #70 in FY2022, #79 in FY2023, #50 in FY2024 and not on the FY2025 list; up 1 since Jul 2024–Jun 2025.
71	Capital Brand Group LLC Top NAICS codes 561730 Landscaping Services	$458,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 37 since Jul 2024–Jun 2025.
72	Afm, LLC Top NAICS codes 519190 All Other Information Services	$439,000	0.2%	Rank history: #90 in FY2021, #69 in FY2022, not on the FY2023 list, #78 in FY2024 and #78 in FY2025; up 8 since Jul 2024–Jun 2025.
73	Centeva LLC Top NAICS codes 541519 Other Computer Related Services 541611 Administrative Management and General Management Consulting Services	$434,220	0.2%	Rank history: not on the FY2021–FY2025 lists; up 78 since Jul 2024–Jun 2025.
74	Techop Solutions International, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$415,060	0.2%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	S C & A Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services 541620 Environmental Consulting Services	$401,924	0.2%	Rank history: #72 in FY2021, not on the FY2022–FY2024 lists and #54 in FY2025; down 26 since Jul 2024–Jun 2025.
76	Universal Parking and Transportation LLC Top NAICS codes 812930 Parking Lots and Garages	$393,394	0.2%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; up 21 since Jul 2024–Jun 2025.
77	Accessagility LLC Top NAICS codes 541519 Other Computer Related Services	$372,563	0.2%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; up 48 since Jul 2024–Jun 2025.
78	The Building People LLC Top NAICS codes 541511 Custom Computer Programming Services	$366,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and not on the FY2024–FY2025 lists; up 80 since Jul 2024–Jun 2025.
79	Hellmuth, Obata & Kassabaum, Inc. Top NAICS codes 541310 Architectural Services	$347,882	0.2%	Rank history: not on the FY2021–FY2023 lists, #61 in FY2024 and #20 in FY2025; down 64 since Jul 2024–Jun 2025.
80	Dynamic Business Group, Inc. Top NAICS codes 519190 All Other Information Services	$345,638	0.2%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023, not on the FY2024 list and #99 in FY2025; new, not ranked in Jul 2024–Jun 2025.
81	Exitech Corporation Top NAICS codes 541519 Other Computer Related Services	$337,000	0.1%	Rank history: #66 in FY2021, #79 in FY2022, #70 in FY2023, #73 in FY2024 and #63 in FY2025; down 36 since Jul 2024–Jun 2025.
82	Aspen Systems, Inc. Top NAICS codes 811212 Computer and Office Machine Repair and Maintenance	$327,391	0.1%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and not on the FY2025 list; down 1 since Jul 2024–Jun 2025.
83	Street Legal Industries LLC Top NAICS codes 611430 Professional and Management Development Training	$322,000	0.1%	Rank history: not on the FY2021–FY2025 lists; up 33 since Jul 2024–Jun 2025.
84	Sterling Computers Corporation Top NAICS codes 334111 Electronic Computer Manufacturing 541519 Other Computer Related Services	$310,331	0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023 and not on the FY2024–FY2025 lists; up 77 since Jul 2024–Jun 2025.
85	Clason Point Partners Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$305,298	0.1%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023, not on the FY2024 list and #88 in FY2025; up 8 since Jul 2024–Jun 2025.
86	Green Powered Technology LLC Top NAICS codes 561410 Document Preparation Services	$297,000	0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023, #76 in FY2024 and #68 in FY2025; down 24 since Jul 2024–Jun 2025.
87	Colossal Contracting LLC Top NAICS codes 541519 Other Computer Related Services	$289,557	0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023, not on the FY2024 list and #84 in FY2025; up 143 since Jul 2024–Jun 2025.
88	Enterprise Technology Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$286,334	0.1%	Rank history: #49 in FY2021, #50 in FY2022, #53 in FY2023, #94 in FY2024 and #91 in FY2025; up 14 since Jul 2024–Jun 2025.
89	Countertrade Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$285,991	0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023, not on the FY2024 list and #86 in FY2025; new, not ranked in Jul 2024–Jun 2025.
90	Architechture Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$285,575	0.1%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; down 2 since Jul 2024–Jun 2025.
91	Aquila Fitness Consulting Systems Ltd Top NAICS codes 713940 Fitness and Recreational Sports Centers	$272,875	0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023, not on the FY2024 list and #81 in FY2025; up 18 since Jul 2024–Jun 2025.
92	Standard-Blazar, LLC Top NAICS codes 541519 Other Computer Related Services	$265,880	0.1%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #90 in FY2025; down 41 since Jul 2024–Jun 2025.
93	Koniag Management Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$261,678	0.1%	Rank history: #26 in FY2021, #13 in FY2022, #15 in FY2023, #26 in FY2024 and #57 in FY2025; down 37 since Jul 2024–Jun 2025.
94	Cape Fox Corporation Through Eagle Health, LLC Top NAICS codes 621498 All Other Outpatient Care Centers	$258,512	0.1%	Rank history: #34 in FY2021, not on the FY2022–FY2023 lists, #69 in FY2024 and #62 in FY2025; down 46 since Jul 2024–Jun 2025.
95	Sharp Solutions Inc. Top NAICS codes 541512 Computer Systems Design Services	$250,113	0.1%	Rank history: not on the FY2021 list, #90 in FY2022, #84 in FY2023 and not on the FY2024–FY2025 lists; up 51 since Jul 2024–Jun 2025.
96	Redhawk It Solutions, LLC Top NAICS codes 541519 Other Computer Related Services	$247,383	0.1%	Rank history: not on the FY2021 list, #64 in FY2022, #62 in FY2023, #89 in FY2024 and not on the FY2025 list; down 19 since Jul 2024–Jun 2025.
97	Schindler Elevator Corporation Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$243,241	0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; down 27 since Jul 2024–Jun 2025.
98	Price Modern LLC Top NAICS codes 337214 Office Furniture (except Wood) Manufacturing	$243,037	0.1%	Rank history: #22 in FY2021, #44 in FY2022, #69 in FY2023, #60 in FY2024 and not on the FY2025 list; down 44 since Jul 2024–Jun 2025.
99	H.e.p. Construction, Inc. Top NAICS codes 561210 Facilities Support Services	$242,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; down 1 since Jul 2024–Jun 2025.
100	Barbaricum LLC Top NAICS codes 541511 Custom Computer Programming Services	$241,619	0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; up 26 since Jul 2024–Jun 2025.

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100 of 222 contractors listed here. See the rest on GovTribe.

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 $225 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.
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 Jul 2024–Jun 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.

Quick answers

Who were the top 10 Nuclear Regulatory Commission contractors in Jul 2025–Jun 2026?

1. Teksynap Corporation ($38.4M), 2. Leidos Holdings, Inc. ($17.4M), 3. The Timken Company ($9.96M), 4. Oasis Systems, LLC ($7.39M), 5. Astrion Group, LLC ($7.03M), 6. MCP Computer Products Inc. ($6.9M), 7. Dell Technologies Inc. ($5.8M), 8. Nve, Inc. ($5.59M), 9. Aegis.Net Inc ($4.8M), 10. Northramp LLC ($4.47M).

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