Top 25 Defense Nuclear Facilities Safety Board Contractors, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Bristol Bay Native Corporation Through Eagle Integrated Services, LLC Top NAICS codes 541513 Computer Facilities Management Services	$2,878,087	35.4%	Rank history: not on the FY2022–FY2024 lists and #1 in FY2025; new, not ranked in Aug 2024–Jul 2025.
2	Ldss, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$2,373,510	29.2%	Rank history: not on the FY2022–FY2024 lists and #2 in FY2025; unchanged since Aug 2024–Jul 2025.
3	Guidehouse Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$867,982	10.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
4	Minburn Technology Group, LLC Top NAICS codes 541519 Other Computer Related Services	$406,912	5.0%	Rank history: not on the FY2022–FY2024 lists and #5 in FY2025; up 3 since Aug 2024–Jul 2025.
5	Prometheus Digital LLC Top NAICS codes 541512 Computer Systems Design Services	$301,687	3.7%	Rank history: not on the FY2022–FY2023 lists, #4 in FY2024 and #4 in FY2025; unchanged since Aug 2024–Jul 2025.
6	TFC Consulting Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$246,000	3.0%	Rank history: not on the FY2022 list, #3 in FY2023, #3 in FY2024 and #3 in FY2025; down 3 since Aug 2024–Jul 2025.
7	Allium US Holding LLC Top NAICS codes 519130 Internet Publishing and Broadcasting and Web Search Portals	$149,448	1.8%	Rank history: not on the FY2022–FY2024 lists and #7 in FY2025; down 1 since Aug 2024–Jul 2025.
8	Software Information Resource Corp Top NAICS codes 541519 Other Computer Related Services	$138,349	1.7%	Rank history: not on the FY2022–FY2023 lists, #13 in FY2024 and #18 in FY2025; up 12 since Aug 2024–Jul 2025.
9	H2 PCI LLC Top NAICS codes 541519 Other Computer Related Services	$122,654	1.5%	Rank history: not on the FY2022–FY2024 lists and #6 in FY2025; new, not ranked in Aug 2024–Jul 2025.
10	Countertrade Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$65,916	0.8%	Rank history: #13 in FY2022, not on the FY2023 list, #14 in FY2024 and #14 in FY2025; up 3 since Aug 2024–Jul 2025.
11	T-Mobile Usa, Inc. Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite)	$64,073	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
12	Access Intelligence LLC Top NAICS codes 513120 Periodical Publishers	$51,132	0.6%	Rank history: #14 in FY2022, #17 in FY2023, #16 in FY2024 and #15 in FY2025; up 4 since Aug 2024–Jul 2025.
13	New TECH Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$40,507	0.5%	Rank history: not on the FY2022–FY2023 lists, #5 in FY2024 and #10 in FY2025; down 9 since Aug 2024–Jul 2025.
14	Kalijarvi, Chuzi, Newman & Fitch, P.C Top NAICS codes 541110 Offices of Lawyers	$39,511	0.5%	Rank history: not on the FY2022–FY2023 lists, #26 in FY2024 and #13 in FY2025; down 2 since Aug 2024–Jul 2025.
15	Cedar International Services LLC Top NAICS codes 541380 Testing Laboratories and Services	$34,256	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
16	LRP Publications, Inc. Top NAICS codes 541519 Other Computer Related Services	$23,386	0.3%	Rank history: not on the FY2022 list, #25 in FY2023, #25 in FY2024 and #24 in FY2025; new, not ranked in Aug 2024–Jul 2025.
17	Wise Ways Consulting, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$23,261	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
18	Page After Page Business Systems, Inc. Top NAICS codes 532420 Office Machinery and Equipment Rental and Leasing	$20,397	0.3%	Rank history: not on the FY2022–FY2023 lists, #24 in FY2024 and #22 in FY2025; unchanged since Aug 2024–Jul 2025.
19	Puyenpa Technologies LLC Top NAICS codes 238210 Electrical Contractors and Other Wiring Installation Contractors	$17,202	0.2%	Rank history: not on the FY2022–FY2024 lists and #17 in FY2025; down 2 since Aug 2024–Jul 2025.
20	At&T Inc. Through Att Mobility LLC Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite)	$16,094	0.2%	Rank history: #10 in FY2022, #8 in FY2023, #11 in FY2024 and #9 in FY2025; down 11 since Aug 2024–Jul 2025.
21	Immersive Concepts L.L.C. Top NAICS codes 238220 Plumbing, Heating, and Air-Conditioning Contractors	$12,223	0.2%	Rank history: not on the FY2022–FY2023 lists, #23 in FY2024 and #23 in FY2025; down 2 since Aug 2024–Jul 2025.
22	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers	$9,776	0.1%	Rank history: not on the FY2022–FY2024 lists and #26 in FY2025; new, not ranked in Aug 2024–Jul 2025.
23	William S. Hein & Co., Inc. Top NAICS codes 519290 Web Search Portals and All Other Information Services	$8,031	0.1%	Rank history: not on the FY2022–FY2023 lists, #27 in FY2024 and #28 in FY2025; up 2 since Aug 2024–Jul 2025.
24	August Schell Enterprises, Inc. Top NAICS codes 513210 Software Publishers	$5,017	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
25	Healthequity, Inc. Top NAICS codes 524292 Pharmacy Benefit Management and Other Third Party Administration of Insurance and Pension Funds	$1,135	<0.1%	Rank history: #25 in FY2022, #29 in FY2023, #28 in FY2024 and #29 in FY2025; up 2 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 $8.13 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 FY2022, #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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