Top 74 National Transportation Safety Board Contractors, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Deloitte Through Deloitte Consulting LLP Top NAICS codes 541512 Computer Systems Design Services	$4,213,964	22.0%	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	Yudrio Inc Top NAICS codes 541511 Custom Computer Programming Services	$2,237,196	11.7%	Rank history: not on the FY2021–FY2024 lists and #2 in FY2025; new, not ranked in Aug 2024–Jul 2025.
3	Dell Technologies Inc. Through Dell Federal Systems L.P Top NAICS codes 511210 Software Publishers	$1,663,302	8.7%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #3 in FY2025; unchanged since Aug 2024–Jul 2025.
4	Science Applications International Corporation Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$1,604,427	8.4%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; down 2 since Aug 2024–Jul 2025.
5	General Dynamics Corporation Through General Dynamics Information Technology, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$1,257,835	6.6%	Rank history: #2 in FY2021, #7 in FY2022, #6 in FY2023, #9 in FY2024 and #7 in FY2025; up 1 since Aug 2024–Jul 2025.
6	Nucorevision Inc Top NAICS codes 541511 Custom Computer Programming Services	$797,387	4.2%	Rank history: not on the FY2021–FY2023 lists, #4 in FY2024 and #5 in FY2025; down 2 since Aug 2024–Jul 2025.
7	Carahsoft Technology Corp Top NAICS codes 511210 Software Publishers 513210 Software Publishers 334111 Electronic Computer Manufacturing	$640,262	3.3%	Rank history: #17 in FY2021, #23 in FY2022, #28 in FY2023, #5 in FY2024 and #6 in FY2025; down 2 since Aug 2024–Jul 2025.
8	Netsync Network Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$562,592	2.9%	Rank history: #29 in FY2021, #12 in FY2022, #10 in FY2023, #20 in FY2024 and #12 in FY2025; new, not ranked in Aug 2024–Jul 2025.
9	Parker Tide LLC Top NAICS codes 611430 Professional and Management Development Training	$537,701	2.8%	Rank history: not on the FY2021–FY2024 lists and #10 in FY2025; new, not ranked in Aug 2024–Jul 2025.
10	Sectek, Inc. Top NAICS codes 561612 Security Guards and Patrol Services	$523,372	2.7%	Rank history: #8 in FY2021, #5 in FY2022, #8 in FY2023, #7 in FY2024 and #8 in FY2025; down 3 since Aug 2024–Jul 2025.
11	Stonelex C LLC Top NAICS codes 531120 Lessors of Nonresidential Buildings (except Miniwarehouses)	$511,420	2.7%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; new, not ranked in Aug 2024–Jul 2025.
12	Standard-Blazar, LLC Top NAICS codes 541519 Other Computer Related Services	$302,810	1.6%	Rank history: not on the FY2021 list, #14 in FY2022, #19 in FY2023, #8 in FY2024 and #11 in FY2025; down 3 since Aug 2024–Jul 2025.
13	At&T Inc. 2 awardees, including Att Mobility LLC and At&T Enterprises, LLC Top NAICS codes 517312 Wireless Telecommunications Carriers (except Satellite) 541519 Other Computer Related Services	$263,130	1.4%	Rank history: #16 in FY2021, #13 in FY2022, #13 in FY2023, #15 in FY2024 and #14 in FY2025; down 2 since Aug 2024–Jul 2025.
14	Crittenton Consulting Group, Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$247,446	1.3%	Rank history: #10 in FY2021, #9 in FY2022, #16 in FY2023, #10 in FY2024 and #13 in FY2025; new, not ranked in Aug 2024–Jul 2025.
15	Thermo Fisher Scientific Inc. 2 awardees, including Thermo Electron North America LLC and FEI Company Top NAICS codes 334516 Analytical Laboratory Instrument Manufacturing 811210 Electronic and Precision Equipment Repair and Maintenance	$246,164	1.3%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #16 in FY2025; up 18 since Aug 2024–Jul 2025.
16	ACR Electronics, Inc. Through APS Aerospace Corp Top NAICS codes 541511 Custom Computer Programming Services	$241,500	1.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
17	Open Text Public Sector Solutions Inc. Top NAICS codes 541511 Custom Computer Programming Services	$210,845	1.1%	Rank history: not on the FY2021–FY2023 lists, #21 in FY2024 and #19 in FY2025; unchanged since Aug 2024–Jul 2025.
18	Heritage Reporting Corporation Top NAICS codes 561320 Temporary Help Services	$210,000	1.1%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; new, not ranked in Aug 2024–Jul 2025.
19	Verizon Through Verizon Business Network Services LLC Top NAICS codes 517110 Wired Telecommunications Carriers	$200,788	1.0%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #21 in FY2025; down 3 since Aug 2024–Jul 2025.
20	Redhawk It Solutions, LLC Top NAICS codes 541519 Other Computer Related Services	$181,709	0.9%	Rank history: not on the FY2021 list, #18 in FY2022, #24 in FY2023, #24 in FY2024 and #22 in FY2025; down 1 since Aug 2024–Jul 2025.
21	Windrose Media LLC Top NAICS codes 516210 Media Streaming Distribution Services, Social Networks, and Other Media Networks and Content Providers 334310 Audio and Video Equipment Manufacturing	$162,376	0.8%	Rank history: #30 in FY2021, #31 in FY2022, #29 in FY2023, #14 in FY2024 and #23 in FY2025; down 9 since Aug 2024–Jul 2025.
22	GMG Management Consulting Inc. Top NAICS codes 541611 Administrative Management and General Management Consulting Services	$148,524	0.8%	Rank history: #27 in FY2021, #20 in FY2022, #25 in FY2023, #26 in FY2024 and #24 in FY2025; down 2 since Aug 2024–Jul 2025.
23	Equinix LLC Top NAICS codes 541519 Other Computer Related Services	$133,696	0.7%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #18 in FY2025; down 8 since Aug 2024–Jul 2025.
24	Colossal Contracting LLC Top NAICS codes 541519 Other Computer Related Services	$118,250	0.6%	Rank history: not on the FY2021–FY2024 lists and #25 in FY2025; new, not ranked in Aug 2024–Jul 2025.
25	August Schell Enterprises, Inc. Top NAICS codes 541519 Other Computer Related Services	$111,411	0.6%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Aug 2024–Jul 2025.
26	The Winvale Group, LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$105,984	0.6%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023, #22 in FY2024 and #28 in FY2025; new, not ranked in Aug 2024–Jul 2025.
27	United Parcel Service, Inc. Top NAICS codes 492110 Couriers and Express Delivery Services	$91,556	0.5%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; new, not ranked in Aug 2024–Jul 2025.
28	Exelon Corporation 2 awardees, including Potomac Electric Power Co Top NAICS codes 221118 Other Electric Power Generation	$84,985	0.4%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; down 6 since Aug 2024–Jul 2025.
29	Free State Reporting, Inc. Top NAICS codes 561320 Temporary Help Services	$83,219	0.4%	Rank history: #26 in FY2021, #17 in FY2022, #21 in FY2023, #23 in FY2024 and #33 in FY2025; down 11 since Aug 2024–Jul 2025.
30	MCP Computer Products Inc. Top NAICS codes 334111 Electronic Computer Manufacturing	$79,540	0.4%	Rank history: #7 in FY2021, #10 in FY2022, #2 in FY2023, #17 in FY2024 and #35 in FY2025; down 16 since Aug 2024–Jul 2025.
31	Acentra Health LLC Through EAP Consultants, LLC Top NAICS codes 624190 Other Individual and Family Services	$69,546	0.4%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; new, not ranked in Aug 2024–Jul 2025.
32	Blackwood Associates, Inc. Top NAICS codes 513210 Software Publishers	$68,402	0.4%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; new, not ranked in Aug 2024–Jul 2025.
33	Sterling Computers Corporation Top NAICS codes 541519 Other Computer Related Services 334111 Electronic Computer Manufacturing	$61,099	0.3%	Rank history: not on the FY2021–FY2023 lists, #34 in FY2024 and #59 in FY2025; up 18 since Aug 2024–Jul 2025.
34	Passur Aerospace, Inc. Top NAICS codes 541511 Custom Computer Programming Services	$60,900	0.3%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023, #42 in FY2024 and #51 in FY2025; new, not ranked in Aug 2024–Jul 2025.
35	Bahfed Corp Top NAICS codes 541519 Other Computer Related Services	$60,136	0.3%	Rank history: #28 in FY2021, not on the FY2022–FY2024 lists and #38 in FY2025; down 4 since Aug 2024–Jul 2025.
36	Lnrs Data Services Inc. Top NAICS codes 519290 Web Search Portals and All Other Information Services	$56,109	0.3%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; new, not ranked in Aug 2024–Jul 2025.
37	Applied Intuition, Inc. Through Mechanical Simulation Corp Top NAICS codes 513210 Software Publishers	$55,000	0.3%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Aug 2024–Jul 2025.
38	Copyright Clearance Center, Inc. Top NAICS codes 519210 Libraries and Archives	$48,960	0.3%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #40 in FY2025; down 3 since Aug 2024–Jul 2025.
39	Arrow Electronics, Inc. Through Immixtechnology Inc. Top NAICS codes 541519 Other Computer Related Services	$46,174	0.2%	Rank history: #32 in FY2021, #27 in FY2022, #50 in FY2023, #45 in FY2024 and #41 in FY2025; down 3 since Aug 2024–Jul 2025.
40	Executive Information Systems, L.L.C. Top NAICS codes 541519 Other Computer Related Services	$45,937	0.2%	Rank history: #58 in FY2021, #59 in FY2022, #68 in FY2023, #62 in FY2024 and #60 in FY2025; new, not ranked in Aug 2024–Jul 2025.
41	MARK43 Inc. Top NAICS codes 513210 Software Publishers	$44,920	0.2%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2023, #44 in FY2024 and #42 in FY2025; down 4 since Aug 2024–Jul 2025.
42	Made Smart Group B.V. Top NAICS codes 513210 Software Publishers	$43,020	0.2%	Rank history: not on the FY2021–FY2022 lists, #56 in FY2023, not on the FY2024 list and #43 in FY2025; new, not ranked in Aug 2024–Jul 2025.
43	Countertrade Products, Inc. Top NAICS codes 541519 Other Computer Related Services	$42,351	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Aug 2024–Jul 2025.
44	Canto, Inc. Top NAICS codes 511210 Software Publishers	$39,950	0.2%	Rank history: #49 in FY2021, #42 in FY2022, #52 in FY2023, #47 in FY2024 and #45 in FY2025; down 5 since Aug 2024–Jul 2025.
45	Institute of Gas Technology Top NAICS codes 541380 Testing Laboratories and Services	$39,902	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
46	Systems Engineering Services Corporation Through Systems Engineering Inc. Top NAICS codes 561621 Security Systems Services (except Locksmiths)	$39,759	0.2%	Rank history: not on the FY2021–FY2022 lists, #34 in FY2023, #41 in FY2024 and #37 in FY2025; down 16 since Aug 2024–Jul 2025.
47	Globalstar, Inc. Through Spot LLC Top NAICS codes 517410 Satellite Telecommunications	$38,496	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
48	Waygate Technologies USA LP Top NAICS codes 811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance	$38,101	0.2%	Rank history: #76 in FY2021, #89 in FY2022, #79 in FY2023, #61 in FY2024 and #65 in FY2025; new, not ranked in Aug 2024–Jul 2025.
49	Advanced Rotorcraft Technology, Inc. Top NAICS codes 513210 Software Publishers	$37,800	0.2%	Rank history: #72 in FY2021, #62 in FY2022, #37 in FY2023, #66 in FY2024 and #48 in FY2025; up 6 since Aug 2024–Jul 2025.
50	RTX Corporation Through Arinc Incorporated Top NAICS codes 336411 Aircraft Manufacturing	$30,574	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
51	University of Wisconsin System Top NAICS codes 513210 Software Publishers	$30,264	0.2%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; down 6 since Aug 2024–Jul 2025.
52	Xerox Holdings Corp Through Xerox Corporation Top NAICS codes 333316 Photographic and Photocopying Equipment Manufacturing	$30,000	0.2%	Rank history: #70 in FY2021, #58 in FY2022, #80 in FY2023, not on the FY2024 list and #50 in FY2025; new, not ranked in Aug 2024–Jul 2025.
53	TD Synnex Corporation Through DLT Solutions, LLC Top NAICS codes 334111 Electronic Computer Manufacturing	$29,027	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
54	National Academy of Sciences Top NAICS codes 611519 Other Technical and Trade Schools	$25,000	0.1%	Rank history: #63 in FY2021, #54 in FY2022, #62 in FY2023, #56 in FY2024 and #57 in FY2025; new, not ranked in Aug 2024–Jul 2025.
55	Deidiker Accounting & Consulting LLC Top NAICS codes 541211 Offices of Certified Public Accountants	$24,900	0.1%	Rank history: #65 in FY2021, #55 in FY2022, not on the FY2023–FY2024 lists and #72 in FY2025; up 4 since Aug 2024–Jul 2025.
56	Enterprise Technology Solutions, Inc. Top NAICS codes 541519 Other Computer Related Services	$20,240	0.1%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023, #35 in FY2024 and #61 in FY2025; down 4 since Aug 2024–Jul 2025.
57	Accessagility LLC Top NAICS codes 541519 Other Computer Related Services	$18,466	0.1%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
58	Proven Management LLC Top NAICS codes 541614 Process, Physical Distribution, and Logistics Consulting Services	$18,219	0.1%	Rank history: #64 in FY2021, not on the FY2022 list, #71 in FY2023, #57 in FY2024 and #58 in FY2025; down 9 since Aug 2024–Jul 2025.
59	Leadership Connect, Inc. Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$18,169	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023, #69 in FY2024 and #66 in FY2025; down 1 since Aug 2024–Jul 2025.
60	Ametek Inc. Through Faro Technologies Inc. Top NAICS codes 518210 Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services	$16,923	0.1%	Rank history: not on the FY2021 list, #71 in FY2022, not on the FY2023–FY2024 lists and #67 in FY2025; new, not ranked in Aug 2024–Jul 2025.
61	Tera Consulting Inc. Top NAICS codes 541512 Computer Systems Design Services	$16,318	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Aug 2024–Jul 2025.
62	Ai-25Tl, Inc. Top NAICS codes 488190 Other Support Activities for Air Transportation	$16,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
63	Accusoft Corporation Top NAICS codes 513210 Software Publishers	$15,870	0.1%	Rank history: #80 in FY2021, #69 in FY2022, #81 in FY2023, #52 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
64	Alarispro, Inc. Top NAICS codes 513210 Software Publishers	$15,759	0.1%	Rank history: not on the FY2021–FY2023 lists, #67 in FY2024 and #69 in FY2025; down 7 since Aug 2024–Jul 2025.
65	ManTech International Corporation Through Unison Virtual Acquisition Office LLC Top NAICS codes 519290 Web Search Portals and All Other Information Services	$15,344	0.1%	Rank history: not on the FY2021–FY2024 lists and #70 in FY2025; new, not ranked in Aug 2024–Jul 2025.
66	Alvarez LLC Top NAICS codes 541519 Other Computer Related Services	$14,701	0.1%	Rank history: #4 in FY2021, not on the FY2022–FY2024 lists and #71 in FY2025; new, not ranked in Aug 2024–Jul 2025.
67	Acuren Inspection, Inc. Top NAICS codes 541380 Testing Laboratories and Services	$12,053	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
68	Hrworx, LLC Top NAICS codes 511210 Software Publishers	$9,394	<0.1%	Rank history: #47 in FY2021, #76 in FY2022, #86 in FY2023, #73 in FY2024 and #75 in FY2025; down 6 since Aug 2024–Jul 2025.
69	LRP Publications, Inc. Top NAICS codes 541519 Other Computer Related Services	$8,238	<0.1%	Rank history: #95 in FY2021, #80 in FY2022, #89 in FY2023, #75 in FY2024 and #78 in FY2025; down 4 since Aug 2024–Jul 2025.
70	WGL Holdings Inc. Through Washington Gas Light Company Top NAICS codes 221210 Natural Gas Distribution	$7,500	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
71	Ipad Rehab LLC Top NAICS codes 811210 Electronic and Precision Equipment Repair and Maintenance	$5,520	<0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; new, not ranked in Aug 2024–Jul 2025.
72	Cbts Technology Solutions LLC Through Recovery Point Systems Inc. Top NAICS codes 493110 General Warehousing and Storage	$2,938	<0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; new, not ranked in Aug 2024–Jul 2025.
73	Stuart B. Consultants Inc. Top NAICS codes 541930 Translation and Interpretation Services	$2,718	<0.1%	Rank history: not on the FY2021–FY2022 lists, #78 in FY2023, not on the FY2024 list and #85 in FY2025; new, not ranked in Aug 2024–Jul 2025.
74	Varex Imaging Corporation Top NAICS codes 541990 All Other Professional, Scientific, and Technical Services	$1,674	<0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in 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 $19.2 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.

Quick answers