Top 100 Nuclear Regulatory Commission Contractors, FY2022

Name: Top 100 Nuclear Regulatory Commission Contractors, FY2022
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Oct 1, 2021 – Sep 30, 2022 Agency page on GovTribe

The top 10 won 50% of FY2022 Nuclear Regulatory Commission contract dollars

Contract obligations: $180,407,186 Net of deobligations, by the Nuclear Regulatory Commission and its offices
Contractors: 307 Parent companies with an obligation
Largest contractor: Teksynap Corporation $23.8 million, 12.8% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Teksynap Corporation Top NAICS codes 541512 Computer Systems Design Services	$23,845,855	12.8%	Rank history: #1 in FY2021, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since FY2021.
2	Leidos Holdings, Inc. Through Leidos, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$16,659,311	8.9%	Rank history: #2 in FY2021, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since FY2021.
3	CGI Technologies and Solutions Inc. Through CGI Federal Inc. Top NAICS codes 541519 Other Computer Related Services	$13,849,785	7.4%	Rank history: #3 in FY2021, #4 in FY2023, #24 in FY2024 and not on the FY2025 list; unchanged since FY2021.
4	Oasis Systems, LLC Top NAICS codes 541519 Other Computer Related Services 541512 Computer Systems Design Services	$9,044,413	4.8%	Rank history: #4 in FY2021, #3 in FY2023, #4 in FY2024 and #3 in FY2025; unchanged since FY2021.
5	CJW Contractors, Inc. Top NAICS codes 236220 Commercial and Institutional Building Construction	$5,701,688	3.1%	Rank history: not on the FY2021 list, #63 in FY2023, #6 in FY2024 and not on the FY2025 list; new.
6	Dell Federal Systems L.P. Through Dell Marketing L.P. Top NAICS codes 511210 Software Publishers	$5,482,987	2.9%	Rank history: #7 in FY2021, #7 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
7	MCP Computer Products Inc. Top NAICS codes 443120 Computer and Software Stores	$5,044,744	2.7%	Rank history: #14 in FY2021, #14 in FY2023, #13 in FY2024 and #17 in FY2025; up 7 since FY2021.
8	Verizon Communications Inc. 6 awardees, including Verizon Business Network Services LLC, Cellco Partnership and Verizon Pennsylvania LLC Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite) 517311 Wired Telecommunications Carriers	$4,951,256	2.7%	Rank history: #9 in FY2021, #20 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2021.
9	Northramp LLC 2 awardees Top NAICS codes 541511 Custom Computer Programming Services	$4,848,071	2.6%	Rank history: #5 in FY2021, #5 in FY2023, #10 in FY2024 and #8 in FY2025; down 4 since FY2021.
10	Aegis.net, Inc. Top NAICS codes 541519 Other Computer Related Services	$4,099,221	2.2%	Rank history: #6 in FY2021, #10 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2021.
11	Southwest Research Institute Top NAICS codes 562211 Hazardous Waste Treatment and Disposal	$3,684,138	2.0%	Rank history: #8 in FY2021, #6 in FY2023, #7 in FY2024 and #21 in FY2025; down 3 since FY2021.
12	Advanced Systems Technology & Management, Inc. Top NAICS codes 541330 Engineering Services	$3,179,220	1.7%	Rank history: #13 in FY2021, not on the FY2023 list, #12 in FY2024 and #44 in FY2025; up 1 since FY2021.
13	Koniag Management Solutions LLC Top NAICS codes 541519 Other Computer Related Services	$2,993,656	1.6%	Rank history: #26 in FY2021, #15 in FY2023, #26 in FY2024 and #57 in FY2025; up 13 since FY2021.
14	Tower Facility Management, LLC Top NAICS codes 561210 Facilities Support Services	$2,403,842	1.3%	Rank history: #12 in FY2021, #18 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
15	Huron Consulting Group Incorporated Through Huron Consulting Services LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541511 Custom Computer Programming Services	$2,129,474	1.1%	Rank history: #25 in FY2021, #19 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2021.
16	Immersive Concepts L.L.C. Top NAICS codes 541519 Other Computer Related Services 519130 Internet Publishing and Broadcasting and Web Search Portals 541512 Computer Systems Design Services	$1,929,642	1.0%	Rank history: #21 in FY2021, #22 in FY2023, #16 in FY2024 and #9 in FY2025; up 5 since FY2021.
17	Puyenpa Services, LLC Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$1,878,477	1.0%	Rank history: not on the FY2021 list, #49 in FY2023, #20 in FY2024 and not on the FY2025 list; new.
18	Gcr-Dean LLC Top NAICS codes 561210 Facilities Support Services	$1,772,128	0.9%	Rank history: not on the FY2021 list, #17 in FY2023, #21 in FY2024 and #19 in FY2025; new.
19	Information Systems Laboratories Inc. 2 awardees Top NAICS codes 541690 Other Scientific and Technical Consulting Services 541330 Engineering Services	$1,698,555	0.9%	Rank history: #17 in FY2021, #11 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2021.
20	Mythics, LLC 2 awardees, including Emergent, LLC Top NAICS codes 511210 Software Publishers 334111 Electronic Computer Manufacturing	$1,659,880	0.9%	Rank history: #16 in FY2021, #32 in FY2023, #35 in FY2024 and #26 in FY2025; down 4 since FY2021.
21	Disys Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$1,519,708	0.8%	Rank history: not on the FY2021 list, #16 in FY2023 and not on the FY2024–FY2025 lists; up 87 since FY2021.
22	Exelon Corporation Through Potomac Electric Power Co Top NAICS codes 221122 Electric Power Distribution	$1,475,875	0.8%	Rank history: not on the FY2021 list, #13 in FY2023 and not on the FY2024–FY2025 lists; new.
23	Blue TECH Inc. Top NAICS codes 541519 Other Computer Related Services	$1,383,031	0.7%	Rank history: not on the FY2021 list, #12 in FY2023 and not on the FY2024–FY2025 lists; up 213 since FY2021.
24	Alaska Native Government Services LLC 2 awardees, including Copper River Enterprise Services, LLC and Copper River Information Technology, LLC Top NAICS codes 541519 Other Computer Related Services	$1,339,209	0.7%	Rank history: #77 in FY2021 and not on the FY2023–FY2025 lists; up 53 since FY2021.
25	Eagle Integrated Services, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,314,047	0.7%	Rank history: #46 in FY2021, #30 in FY2023, #39 in FY2024 and #56 in FY2025; up 21 since FY2021.
26	Government of the United States 3 awardees, including Uchicago Argonne, LLC and GSA Financial and Payroll Service Top NAICS codes 532112 Passenger Car Leasing 424120 Stationery and Office Supplies Merchant Wholesalers	$1,307,729	0.7%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 229 since FY2021.
27	Thomas Scientific LLC Through Unison Software Inc. Top NAICS codes 511210 Software Publishers	$1,288,299	0.7%	Rank history: #15 in FY2021, #26 in FY2023 and not on the FY2024–FY2025 lists; down 12 since FY2021.
28	Oak Ridge Associated Universities, Incorporated Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,262,222	0.7%	Rank history: #36 in FY2021, #37 in FY2023, #22 in FY2024 and #34 in FY2025; up 8 since FY2021.
29	Four LLC Top NAICS codes 541519 Other Computer Related Services	$1,129,091	0.6%	Rank history: #20 in FY2021, #24 in FY2023, #5 in FY2024 and #10 in FY2025; down 9 since FY2021.
30	Business Management Associates Inc. Top NAICS codes 541612 Human Resources Consulting Services	$1,107,206	0.6%	Rank history: #32 in FY2021, #29 in FY2023, #87 in FY2024 and #36 in FY2025; up 2 since FY2021.
31	ICF International, Inc. Through ICF Incorporated, L.L.C. Top NAICS codes 541611 Administrative Management and General Management Consulting Services 541690 Other Scientific and Technical Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$1,041,476	0.6%	Rank history: #33 in FY2021, #43 in FY2023 and not on the FY2024–FY2025 lists; up 2 since FY2021.
32	Code Plus, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$1,035,461	0.6%	Rank history: #48 in FY2021, #35 in FY2023, #41 in FY2024 and #72 in FY2025; up 16 since FY2021.
33	Data Systems Analysts Inc. Through Project Performance Company, LLC Top NAICS codes 541511 Custom Computer Programming Services	$1,031,552	0.6%	Rank history: #42 in FY2021, #38 in FY2023, #99 in FY2024 and not on the FY2025 list; up 9 since FY2021.
34	Eagle Health, LLC Top NAICS codes 621498 All Other Outpatient Care Centers	$1,015,000	0.5%	Rank history: not on the FY2021 list, #60 in FY2023 and not on the FY2024–FY2025 lists; new.
35	Beckman & Associates Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$987,000	0.5%	Rank history: #74 in FY2021, #61 in FY2023, #68 in FY2024 and #65 in FY2025; up 39 since FY2021.
36	Thundercat Technology, LLC Top NAICS codes 541519 Other Computer Related Services	$980,594	0.5%	Rank history: #29 in FY2021 and not on the FY2023–FY2025 lists; down 7 since FY2021.
37	Clark Baty Associates Inc. Top NAICS codes 541519 Other Computer Related Services	$959,441	0.5%	Rank history: #28 in FY2021 and not on the FY2023–FY2025 lists; down 9 since FY2021.
38	Larsonallen LLP Through Cliftonlarsonallen LLP Top NAICS codes 541219 Other Accounting Services	$904,254	0.5%	Rank history: #89 in FY2021 and not on the FY2023–FY2025 lists; up 51 since FY2021.
39	The Chenega Corporation 4 awardees, including Chenega Healthcare Services LLC, Chenega Logistics, LLC and Chenega Reliable Services LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541513 Computer Facilities Management Services 541611 Administrative Management and General Management Consulting Services	$834,765	0.4%	Rank history: #19 in FY2021, #51 in FY2023 and not on the FY2024–FY2025 lists; down 20 since FY2021.
40	R I Solutions, LLC Top NAICS codes 541519 Other Computer Related Services	$830,000	0.4%	Rank history: not on the FY2021 list, #25 in FY2023, #17 in FY2024 and #32 in FY2025; new.
41	Engineering Mechanics Corporation of Columbus Top NAICS codes 541690 Other Scientific and Technical Consulting Services 541990 All Other Professional, Scientific, and Technical Services	$806,229	0.4%	Rank history: #41 in FY2021, #68 in FY2023, #48 in FY2024 and #67 in FY2025; unchanged since FY2021.
42	Heritage Interiors LLC 2 awardees Top NAICS codes 337127 Institutional Furniture Manufacturing	$805,281	0.4%	Rank history: #45 in FY2021 and not on the FY2023–FY2025 lists; up 3 since FY2021.
43	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$787,278	0.4%	Rank history: not on the FY2021 list, #36 in FY2023, #80 in FY2024 and #39 in FY2025; new.
44	Price Modern LLC Top NAICS codes 337214 Office Furniture (except Wood) Manufacturing	$787,200	0.4%	Rank history: #22 in FY2021, #69 in FY2023, #60 in FY2024 and not on the FY2025 list; down 22 since FY2021.
45	Translation Excellence Inc. Top NAICS codes 541930 Translation and Interpretation Services	$786,758	0.4%	Rank history: #99 in FY2021, #50 in FY2023, #40 in FY2024 and #29 in FY2025; up 54 since FY2021.
46	Carahsoft Technology Corp Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services 541519 Other Computer Related Services	$772,385	0.4%	Rank history: #54 in FY2021, #48 in FY2023, #37 in FY2024 and #51 in FY2025; up 8 since FY2021.
47	Asrc Federal Data Networx, LLC Top NAICS codes 517919 All Other Telecommunications	$743,855	0.4%	Rank history: not on the FY2021 list, #47 in FY2023 and not on the FY2024–FY2025 lists; new.
48	Kikiktagruk Inupiat Corp Through Midnight Sun Technologies LLC Top NAICS codes 561110 Office Administrative Services	$710,000	0.4%	Rank history: #64 in FY2021, #45 in FY2023, not on the FY2024 list and #49 in FY2025; up 16 since FY2021.
49	Ip-Plus Consulting, Inc. Top NAICS codes 541519 Other Computer Related Services	$681,305	0.4%	Rank history: #18 in FY2021 and not on the FY2023–FY2025 lists; down 31 since FY2021.
50	Enterprise Technology Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$630,097	0.3%	Rank history: #49 in FY2021, #53 in FY2023, #94 in FY2024 and #91 in FY2025; down 1 since FY2021.
51	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$617,476	0.3%	Rank history: #79 in FY2021, #99 in FY2023, #33 in FY2024 and #30 in FY2025; up 28 since FY2021.
52	4 Star Technologies, Inc. Top NAICS codes 541519 Other Computer Related Services	$606,393	0.3%	Rank history: #63 in FY2021, #52 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2021.
53	Sabre88, LLC Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 561110 Office Administrative Services	$595,527	0.3%	Rank history: #59 in FY2021 and not on the FY2023–FY2025 lists; up 6 since FY2021.
54	Pacific Research & Evaluation LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$593,557	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 90 since FY2021.
55	Integration Technologies Group, Inc. Top NAICS codes 541519 Other Computer Related Services	$566,279	0.3%	Rank history: #62 in FY2021, #59 in FY2023, #63 in FY2024 and not on the FY2025 list; up 7 since FY2021.
56	Neal R. Gross and Company, Inc. Top NAICS codes 561492 Court Reporting and Stenotype Services	$550,000	0.3%	Rank history: #53 in FY2021, #64 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2021.
57	JBS Financial Services, Inc. Top NAICS codes 541519 Other Computer Related Services	$532,271	0.3%	Rank history: not on the FY2021 list, #65 in FY2023, #70 in FY2024 and not on the FY2025 list; new.
58	Advanced Computer Learning Co, LLC Top NAICS codes 611710 Educational Support Services	$532,127	0.3%	Rank history: #58 in FY2021 and not on the FY2023–FY2025 lists; unchanged since FY2021.
59	Chainbridge Solutions Incorporated Top NAICS codes 541511 Custom Computer Programming Services	$530,440	0.3%	Rank history: #51 in FY2021, #86 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2021.
60	Emergent, LLC Top NAICS codes 541519 Other Computer Related Services	$523,749	0.3%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
61	At&T Inc. 3 awardees, including At&T Enterprises, LLC, Att Mobility LLC and Pacific Bell Telephone Company Top NAICS codes 517110 Wired Telecommunications Carriers 517312 Wireless Telecommunications Carriers (except Satellite) 517311 Wired Telecommunications Carriers	$517,861	0.3%	Rank history: not on the FY2021 list, #54 in FY2023 and not on the FY2024–FY2025 lists; new.
62	Archaeologic Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$512,941	0.3%	Rank history: #91 in FY2021, #88 in FY2023 and not on the FY2024–FY2025 lists; up 29 since FY2021.
63	Alvarez LLC Top NAICS codes 541519 Other Computer Related Services	$482,462	0.3%	Rank history: #71 in FY2021, not on the FY2023–FY2024 lists and #13 in FY2025; up 8 since FY2021.
64	Redhawk It Solutions, LLC Top NAICS codes 541519 Other Computer Related Services	$481,077	0.3%	Rank history: not on the FY2021 list, #62 in FY2023, #89 in FY2024 and not on the FY2025 list; up 118 since FY2021.
65	Competitive Innovations LLC Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$479,355	0.3%	Rank history: #31 in FY2021, #89 in FY2023, #83 in FY2024 and not on the FY2025 list; down 34 since FY2021.
66	Energy Research Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$471,841	0.3%	Rank history: not on the FY2021 list, #28 in FY2023, #34 in FY2024 and #98 in FY2025; up 47 since FY2021.
67	Intellizant LLC Top NAICS codes 541519 Other Computer Related Services	$440,642	0.2%	Rank history: #67 in FY2021 and not on the FY2023–FY2025 lists; unchanged since FY2021.
68	Gunnison Consulting Group Inc. Through G2Sf LLC Top NAICS codes 541513 Computer Facilities Management Services	$440,000	0.2%	Rank history: not on the FY2021 list, #27 in FY2023, #72 in FY2024 and not on the FY2025 list; new.
69	Afm, LLC Top NAICS codes 519190 All Other Information Services	$432,739	0.2%	Rank history: #90 in FY2021, not on the FY2023 list, #78 in FY2024 and #78 in FY2025; up 21 since FY2021.
70	Institute of Nuclear Power Operations, Inc. Top NAICS codes 541330 Engineering Services	$430,873	0.2%	Rank history: #73 in FY2021, #79 in FY2023, #50 in FY2024 and not on the FY2025 list; up 3 since FY2021.
71	Corys Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services 511210 Software Publishers	$429,966	0.2%	Rank history: not on the FY2021 list, not on the FY2023 list, #38 in FY2024 and not on the FY2025 list; new.
72	The Pennsylvania State University Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$419,965	0.2%	Rank history: #65 in FY2021, #77 in FY2023, #53 in FY2024 and #73 in FY2025; down 7 since FY2021.
73	V3Gate, LLC Top NAICS codes 541519 Other Computer Related Services	$413,535	0.2%	Rank history: not on the FY2021 list, #58 in FY2023, #47 in FY2024 and #47 in FY2025; new.
74	Kinectrics AES Inc. Top NAICS codes 541380 Testing Laboratories and Services	$408,749	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
75	Numark Associates, Inc. Top NAICS codes 541690 Other Scientific and Technical Consulting Services	$405,139	0.2%	Rank history: #56 in FY2021, #31 in FY2023, #51 in FY2024 and #60 in FY2025; down 19 since FY2021.
76	Pathfinder Consultants, LLC Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$384,000	0.2%	Rank history: #68 in FY2021, #72 in FY2023, #58 in FY2024 and #79 in FY2025; down 8 since FY2021.
77	AFG Group Inc. Top NAICS codes 541330 Engineering Services	$382,425	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 39 since FY2021.
78	Aqiwo, Inc. Top NAICS codes 541512 Computer Systems Design Services	$377,675	0.2%	Rank history: #78 in FY2021, #97 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2021.
79	Exitech Corporation Top NAICS codes 541519 Other Computer Related Services	$375,000	0.2%	Rank history: #66 in FY2021, #70 in FY2023, #73 in FY2024 and #63 in FY2025; down 13 since FY2021.
80	Evolution Management, Inc. Top NAICS codes 611430 Professional and Management Development Training	$341,001	0.2%	Rank history: #37 in FY2021 and not on the FY2023–FY2025 lists; down 43 since FY2021.
81	SD Solutions LLC Top NAICS codes 541618 Other Management Consulting Services	$340,274	0.2%	Rank history: #39 in FY2021, #33 in FY2023, #46 in FY2024 and #40 in FY2025; down 42 since FY2021.
82	Renaissance Code Development LLC Top NAICS codes 541511 Custom Computer Programming Services 541690 Other Scientific and Technical Consulting Services	$330,000	0.2%	Rank history: #82 in FY2021, #46 in FY2023, #79 in FY2024 and #42 in FY2025; unchanged since FY2021.
83	Science Applications International Corporation Top NAICS codes 541519 Other Computer Related Services	$317,762	0.2%	Rank history: #50 in FY2021 and not on the FY2023–FY2025 lists; down 33 since FY2021.
84	Equinix, Inc. Top NAICS codes 541519 Other Computer Related Services	$309,591	0.2%	Rank history: not on the FY2021 list, #90 in FY2023 and not on the FY2024–FY2025 lists; new.
85	Red Heritage Media LLC Top NAICS codes 561410 Document Preparation Services 611430 Professional and Management Development Training	$307,000	0.2%	Rank history: #57 in FY2021, #57 in FY2023, not on the FY2024 list and #97 in FY2025; down 28 since FY2021.
86	Tyson Project Management Group LLC Top NAICS codes 561210 Facilities Support Services	$300,000	0.2%	Rank history: not on the FY2021 list, #83 in FY2023, #54 in FY2024 and #70 in FY2025; new.
87	Jama Enterprises, Inc. Top NAICS codes 541612 Human Resources Consulting Services	$298,723	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 15 since FY2021.
88	Green Powered Technology LLC Top NAICS codes 561410 Document Preparation Services	$298,350	0.2%	Rank history: #61 in FY2021 and not on the FY2023–FY2025 lists; down 27 since FY2021.
89	Forensic Drug & Alcohol Testing LLC Top NAICS codes 621999 All Other Miscellaneous Ambulatory Health Care Services	$294,488	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 86 since FY2021.
90	Sharp Solutions Inc. Top NAICS codes 541512 Computer Systems Design Services	$284,000	0.2%	Rank history: not on the FY2021 list, #84 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2021.
91	Red River Technology LLC Through Distributed Technology Group LLC Top NAICS codes 541519 Other Computer Related Services	$283,997	0.2%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
92	Turning Point Global Solutions LLC Top NAICS codes 541512 Computer Systems Design Services	$277,327	0.1%	Rank history: not on the FY2021 list, #98 in FY2023 and not on the FY2024–FY2025 lists; new.
93	Castro & Company, LLC Top NAICS codes 541219 Other Accounting Services	$271,115	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 25 since FY2021.
94	Strategic Communications LLC Top NAICS codes 541519 Other Computer Related Services	$268,086	0.1%	Rank history: not on the FY2021 list, not on the FY2023 list, #65 in FY2024 and not on the FY2025 list; new.
95	Vantage Human Resource Services, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$265,000	0.1%	Rank history: #100 in FY2021, #96 in FY2023 and not on the FY2024–FY2025 lists; up 5 since FY2021.
96	F-Concepts, Inc. Top NAICS codes 541930 Translation and Interpretation Services	$262,227	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 59 since FY2021.
97	Govsmart, Inc. Top NAICS codes 541519 Other Computer Related Services	$250,486	0.1%	Rank history: #30 in FY2021 and not on the FY2023–FY2025 lists; down 67 since FY2021.
98	Universal Parking and Transportation LLC Top NAICS codes 812930 Parking Lots and Garages	$250,484	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; new.
99	Applied Programming Technology Inc. Top NAICS codes 541511 Custom Computer Programming Services	$250,000	0.1%	Rank history: #40 in FY2021 and not on the FY2023–FY2025 lists; down 59 since FY2021.
100	Four Tribes Construction Services, LLC Top NAICS codes 236220 Commercial and Institutional Building Construction	$244,533	0.1%	Rank history: not on the FY2021 list and not on the FY2023–FY2025 lists; up 49 since FY2021.

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100 of 307 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 $187 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 2022 ran Oct 1, 2021 – Sep 30, 2022. 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 FY2021. "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 FY2021 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

Who were the top 10 Nuclear Regulatory Commission contractors in FY2022?

1. Teksynap Corporation ($23.8M), 2. Leidos Holdings, Inc. ($16.7M), 3. CGI Technologies and Solutions Inc. ($13.8M), 4. Oasis Systems, LLC ($9.04M), 5. CJW Contractors, Inc. ($5.7M), 6. Dell Federal Systems L.P. ($5.48M), 7. MCP Computer Products Inc. ($5.04M), 8. Verizon Communications Inc. ($4.95M), 9. Northramp LLC ($4.85M), 10. Aegis.net, Inc. ($4.1M).

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