Top 58 Contractors in PSC AS12: Transportation R&D Services; Surface Transportation, Public Transit, and Rail; Applied Research, Jul 2025–Jun 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Napatree Technology LLC Top agencies DOD (Department of Defense)	$265,382,200	69.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
2	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies DOT (Department of Transportation)	$15,147,719	4.0%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023, #1 in FY2024 and #1 in FY2025; down 1 since Jul 2024–Jun 2025.
3	SES Group & Associates, LLC Top agencies DOT (Department of Transportation)	$5,803,032	1.5%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023, #17 in FY2024 and #27 in FY2025; up 21 since Jul 2024–Jun 2025.
4	Toxcel LLC Top agencies DOT (Department of Transportation)	$4,823,045	1.3%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #3 in FY2025; up 2 since Jul 2024–Jun 2025.
5	Genex Systems, LLC Top agencies DOT (Department of Transportation)	$3,898,772	1.0%	Rank history: #13 in FY2021, not on the FY2022 list, #3 in FY2023, #2 in FY2024 and #2 in FY2025; down 3 since Jul 2024–Jun 2025.
6	Iengineering Corporation Top agencies DOT (Department of Transportation)	$3,400,000	0.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
7	Syntek Technologies, Inc. Top agencies DOT (Department of Transportation)	$2,188,132	0.6%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #5 in FY2025; up 1 since Jul 2024–Jun 2025.
8	Creare LLC Top agencies DOT (Department of Transportation)	$1,712,463	0.5%	Rank history: #28 in FY2021, not on the FY2022–FY2024 lists and #51 in FY2025; up 37 since Jul 2024–Jun 2025.
9	Tranalytics, LLC Top agencies DOT (Department of Transportation)	$1,711,820	0.5%	Rank history: not on the FY2021 list, #35 in FY2022, not on the FY2023–FY2024 lists and #49 in FY2025; up 33 since Jul 2024–Jun 2025.
10	X-Wave Innovations, Inc. Top agencies DOT (Department of Transportation)	$1,706,496	0.4%	Rank history: not on the FY2021–FY2023 lists, #41 in FY2024 and #9 in FY2025; up 34 since Jul 2024–Jun 2025.
11	JFL Solutions, LLC Top agencies DOT (Department of Transportation)	$1,512,714	0.4%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and not on the FY2025 list; up 44 since Jul 2024–Jun 2025.
12	Innotech Systems LLC Top agencies DOT (Department of Transportation)	$1,499,714	0.4%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and #11 in FY2025; up 51 since Jul 2024–Jun 2025.
13	Infrasense, Inc. Top agencies DOT (Department of Transportation)	$1,324,722	0.3%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #12 in FY2025; up 37 since Jul 2024–Jun 2025.
14	Insi Cloud Inc Top agencies HHS (Department of Health and Human Services)	$1,256,639	0.3%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023, #32 in FY2024 and #32 in FY2025; up 14 since Jul 2024–Jun 2025.
15	Darkflite Inc. Top agencies DOT (Department of Transportation)	$1,250,000	0.3%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #73 in FY2025; up 51 since Jul 2024–Jun 2025.
16	Legacy Innovation Inc. Top agencies DOT (Department of Transportation)	$1,249,679	0.3%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #13 in FY2025; up 48 since Jul 2024–Jun 2025.
17	Engineering & Software Consultants, LLC Top agencies DOT (Department of Transportation)	$1,249,331	0.3%	Rank history: #11 in FY2021, #16 in FY2022, #12 in FY2023, #6 in FY2024 and #14 in FY2025; up 2 since Jul 2024–Jun 2025.
18	Railroad Technology and Services Limited Liability Company Top agencies DOT (Department of Transportation)	$1,243,590	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
19	Physical Sciences Inc. Top agencies DOT (Department of Transportation)	$1,008,431	0.3%	Rank history: not on the FY2021–FY2023 lists, #51 in FY2024 and #17 in FY2025; up 41 since Jul 2024–Jun 2025.
20	Saferstreet Solutions LLC Top agencies DOT (Department of Transportation)	$999,992	0.3%	Rank history: not on the FY2021–FY2023 lists, #40 in FY2024 and #15 in FY2025; up 21 since Jul 2024–Jun 2025.
21	Applied Research Associates, Inc. Top agencies DOT (Department of Transportation)	$928,023	0.2%	Rank history: not on the FY2021–FY2022 lists, #31 in FY2023, not on the FY2024 list and #20 in FY2025; new, not ranked in Jul 2024–Jun 2025.
22	Weris, Inc. Top agencies DOT (Department of Transportation)	$886,930	0.2%	Rank history: not on the FY2021 list, #46 in FY2022, not on the FY2023–FY2024 lists and #29 in FY2025; new, not ranked in Jul 2024–Jun 2025.
23	Advanced Asphalt Technologies LLC Top agencies DOT (Department of Transportation)	$854,802	0.2%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; new, not ranked in Jul 2024–Jun 2025.
24	Vanasse Hangen Brustlin, Inc. Top agencies DOT (Department of Transportation)	$691,717	0.2%	Rank history: #59 in FY2021, #6 in FY2022, #7 in FY2023, #3 in FY2024 and #7 in FY2025; down 21 since Jul 2024–Jun 2025.
25	The University of Kentucky Research Foundation Top agencies DOT (Department of Transportation)	$614,843	0.2%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and #23 in FY2025; up 13 since Jul 2024–Jun 2025.
26	Klaw Industries LLC Top agencies DOT (Department of Transportation)	$600,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
27	Golder Europe Service Centre SRL Through WSP USA Inc. Top agencies DOT (Department of Transportation)	$475,000	0.1%	Rank history: not on the FY2021–FY2023 lists, #65 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
28	Ezdatamd LLC Top agencies DOT (Department of Transportation)	$450,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; new, not ranked in Jul 2024–Jun 2025.
29	Lockheed Martin Corporation Top agencies DARPA (Defense Advanced Research Projects Agency)	$414,052	0.1%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023, not on the FY2024 list and #4 in FY2025; down 24 since Jul 2024–Jun 2025.
30	Schatz Publishing Group, LLC Top agencies DOT (Department of Transportation)	$409,862	0.1%	Rank history: not on the FY2021 list, #26 in FY2022, #25 in FY2023, #21 in FY2024 and #31 in FY2025; new, not ranked in Jul 2024–Jun 2025.
31	University of South Florida Top agencies DOT (Department of Transportation)	$350,762	0.1%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
32	University of Missouri System Top agencies DOT (Department of Transportation)	$350,000	0.1%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #35 in FY2025; up 3 since Jul 2024–Jun 2025.
33	Hptech Inc. Top agencies DOT (Department of Transportation)	$344,322	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
34	North Carolina State University Top agencies DOT (Department of Transportation)	$300,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35	Nanosonic Inc. Top agencies DOT (Department of Transportation)	$300,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36	Protection Engineering Consultants LLC Top agencies DOT (Department of Transportation)	$299,981	0.1%	Rank history: not on the FY2021 list, #51 in FY2022, #41 in FY2023, #23 in FY2024 and #30 in FY2025; unchanged since Jul 2024–Jun 2025.
37	Texas A&M Transportation Institute Top agencies DOT (Department of Transportation)	$267,453	0.1%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #26 in FY2025; down 10 since Jul 2024–Jun 2025.
38	Ati, Inc. Top agencies DOT (Department of Transportation)	$245,000	0.1%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #6 in FY2025; down 34 since Jul 2024–Jun 2025.
39	National Institute of Building Sciences Top agencies DOT (Department of Transportation)	$212,766	0.1%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and #39 in FY2025; down 5 since Jul 2024–Jun 2025.
40	Thornton Tomasetti Inc. Top agencies DOT (Department of Transportation)	$212,710	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
41	Kitware Inc. Top agencies DOT (Department of Transportation)	$206,500	0.1%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; up 13 since Jul 2024–Jun 2025.
42	Zkxkz LLC Top agencies DOT (Department of Transportation)	$206,499	0.1%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; new, not ranked in Jul 2024–Jun 2025.
43	Emprise Concepts, LLC Top agencies DOT (Department of Transportation)	$206,468	0.1%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; new, not ranked in Jul 2024–Jun 2025.
44	Insight Rail LLC Top agencies DOT (Department of Transportation)	$206,461	0.1%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; new, not ranked in Jul 2024–Jun 2025.
45	Diamond Age Technology LLC Top agencies DOT (Department of Transportation)	$206,450	0.1%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	FTL Labs Corp Top agencies DOT (Department of Transportation)	$206,448	0.1%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Jul 2024–Jun 2025.
47	Tgias LLC Top agencies DOT (Department of Transportation)	$206,426	0.1%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
48	Flexlynqs LLC Top agencies DOT (Department of Transportation)	$206,380	0.1%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Jul 2024–Jun 2025.
49	RIX Industries Top agencies DOT (Department of Transportation)	$204,573	0.1%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; new, not ranked in Jul 2024–Jun 2025.
50	Avawatz Co Top agencies DOT (Department of Transportation)	$201,759	0.1%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; new, not ranked in Jul 2024–Jun 2025.
51	Redstone Technologies LLC Top agencies DOT (Department of Transportation)	$199,894	0.1%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; new, not ranked in Jul 2024–Jun 2025.
52	Mosaic Atm, Inc. Top agencies DOT (Department of Transportation)	$199,873	0.1%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023, #44 in FY2024 and #57 in FY2025; down 5 since Jul 2024–Jun 2025.
53	International Electronic Machines Corporation Top agencies DOT (Department of Transportation)	$199,620	0.1%	Rank history: #53 in FY2021, #21 in FY2022, not on the FY2023–FY2024 lists and #59 in FY2025; new, not ranked in Jul 2024–Jun 2025.
54	New Math Data Pubsec LLC Top agencies DOT (Department of Transportation)	$198,207	0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Jul 2024–Jun 2025.
55	Red Equation Corp Top agencies DOT (Department of Transportation)	$153,372	<0.1%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Jul 2024–Jun 2025.
56	Southwest Research Institute Top agencies DOT (Department of Transportation)	$140,141	<0.1%	Rank history: not on the FY2021–FY2023 lists, #66 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
57	National Academy of Sciences Top agencies DOT (Department of Transportation)	$83,340	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
58	Virginia Commonwealth University Through Virginia Polytechnic Institute & State University Top agencies DOT (Department of Transportation)	$58,989	<0.1%	Rank history: not on the FY2021–FY2022 lists, #9 in FY2023, #11 in FY2024 and #38 in FY2025; down 46 since Jul 2024–Jun 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 $380 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