Top 39 Contractors in PSC AS11: Transportation R&D Services; Surface Transportation, Public Transit, and Rail; Basic Research, Jul 2025–Jun 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Noblis, Inc. Top agencies DOT (Department of Transportation)	$12,519,376	25.9%	Rank history: #12 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Ensco Inc. Top agencies DOT (Department of Transportation)	$10,011,834	20.7%	Rank history: #30 in FY2021, #31 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since Jul 2024–Jun 2025.
3	Semanticbits LLC Through ICF Incorporated, L.L.C. Top agencies DOT (Department of Transportation)	$3,613,390	7.5%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #3 in FY2025; unchanged since Jul 2024–Jun 2025.
4	AGR LLC Top agencies DOT (Department of Transportation)	$2,583,174	5.3%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; new, not ranked in Jul 2024–Jun 2025.
5	Intelligent Transportation Society of America (Its America) Top agencies DOT (Department of Transportation)	$2,358,324	4.9%	Rank history: #9 in FY2021, #19 in FY2022, #19 in FY2023, #36 in FY2024 and #10 in FY2025; up 17 since Jul 2024–Jun 2025.
6	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies DOT (Department of Transportation)	$1,775,398	3.7%	Rank history: not on the FY2021 list, #11 in FY2022, #18 in FY2023, #9 in FY2024 and #4 in FY2025; unchanged since Jul 2024–Jun 2025.
7	Path-Tec LLC Top agencies DHA (Defense Health Agency)	$1,334,103	2.8%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and #12 in FY2025; up 5 since Jul 2024–Jun 2025.
8	Transportation Technology Center, Inc. Top agencies DOT (Department of Transportation)	$1,032,354	2.1%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; new, not ranked in Jul 2024–Jun 2025.
9	The Mitre Corporation Top agencies DOT (Department of Transportation)	$991,715	2.0%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #35 in FY2025; up 32 since Jul 2024–Jun 2025.
10	Regents of the University of Michigan Top agencies DOT (Department of Transportation)	$968,895	2.0%	Rank history: not on the FY2021 list, #7 in FY2022, #15 in FY2023, #22 in FY2024 and #14 in FY2025; up 8 since Jul 2024–Jun 2025.
11	Redstone Technologies LLC Top agencies DOT (Department of Transportation)	$952,484	2.0%	Rank history: not on the FY2021–FY2023 lists, #27 in FY2024 and #17 in FY2025; up 13 since Jul 2024–Jun 2025.
12	Virginia Commonwealth University Through Virginia Polytechnic Institute & State University Top agencies DOT (Department of Transportation)	$718,972	1.5%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023, #4 in FY2024 and #13 in FY2025; down 8 since Jul 2024–Jun 2025.
13	Washington Metropolitan Area Transit Authority Top agencies NEH (National Endowment for the Humanities)	$671,907	1.4%	Rank history: #56 in FY2021, #21 in FY2022, #24 in FY2023, #37 in FY2024 and #21 in FY2025; up 42 since Jul 2024–Jun 2025.
14	Golder Europe Service Centre SRL Through WSP USA Solutions Inc. Top agencies DOT (Department of Transportation)	$625,904	1.3%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #18 in FY2025; up 6 since Jul 2024–Jun 2025.
15	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies DOT (Department of Transportation)	$622,450	1.3%	Rank history: #10 in FY2021, #4 in FY2022, #7 in FY2023, #47 in FY2024 and #15 in FY2025; new, not ranked in Jul 2024–Jun 2025.
16	Aerovironment, Inc. Top agencies DOT (Department of Transportation)	$575,283	1.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
17	Sharma & Associates Inc Top agencies DOT (Department of Transportation)	$503,327	1.0%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #27 in FY2025; down 3 since Jul 2024–Jun 2025.
18	Transportation Research Center Inc. Top agencies DOT (Department of Transportation)	$499,909	1.0%	Rank history: #3 in FY2021, #17 in FY2022, #20 in FY2023, #7 in FY2024 and #8 in FY2025; down 11 since Jul 2024–Jun 2025.
19	The George Mason University Instructional Foundation, Inc. Through George Mason University Top agencies DOT (Department of Transportation)	$476,426	1.0%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #11 in FY2025; up 4 since Jul 2024–Jun 2025.
20	Battelle Memorial Institute Top agencies DOT (Department of Transportation)	$471,291	1.0%	Rank history: not on the FY2021 list, #6 in FY2022, #8 in FY2023, #5 in FY2024 and #7 in FY2025; down 15 since Jul 2024–Jun 2025.
21	University of Tennessee 2 awardees Top agencies DOT (Department of Transportation)	$468,000	1.0%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; new, not ranked in Jul 2024–Jun 2025.
22	Vtech B.V. Top agencies DOT (Department of Transportation)	$358,400	0.7%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; new, not ranked in Jul 2024–Jun 2025.
23	Southern Methodist University Inc Top agencies DOT (Department of Transportation)	$306,200	0.6%	Rank history: not on the FY2021–FY2023 lists, #51 in FY2024 and not on the FY2025 list; up 24 since Jul 2024–Jun 2025.
24	Virginia Polytechnic Institute & State University Top agencies DOT (Department of Transportation)	$253,878	0.5%	Rank history: #2 in FY2021, #5 in FY2022, not on the FY2023 list, #13 in FY2024 and #20 in FY2025; down 13 since Jul 2024–Jun 2025.
25	University of California, San Diego Top agencies DOT (Department of Transportation)	$244,364	0.5%	Rank history: not on the FY2021–FY2023 lists, #46 in FY2024 and #24 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	International Electronic Machines Corporation Top agencies DOT (Department of Transportation)	$217,254	0.4%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #25 in FY2025; up 13 since Jul 2024–Jun 2025.
27	University of South Carolina Top agencies DOT (Department of Transportation)	$205,187	0.4%	Rank history: #20 in FY2021, #28 in FY2022, #29 in FY2023, #35 in FY2024 and #26 in FY2025; up 17 since Jul 2024–Jun 2025.
28	Board of Regents of the University of Nebraska Top agencies DOT (Department of Transportation)	$157,811	0.3%	Rank history: not on the FY2021–FY2023 lists, #52 in FY2024 and #30 in FY2025; up 21 since Jul 2024–Jun 2025.
29	Applied Research Associates, Inc. Top agencies DOT (Department of Transportation)	$129,109	0.3%	Rank history: #33 in FY2021, #41 in FY2022, not on the FY2023–FY2024 lists and #32 in FY2025; new, not ranked in Jul 2024–Jun 2025.
30	Tennessee State University Top agencies DOT (Department of Transportation)	$123,819	0.3%	Rank history: not on the FY2021 list, #42 in FY2022, not on the FY2023 list, #61 in FY2024 and #33 in FY2025; up 24 since Jul 2024–Jun 2025.
31	Kansas State University Top agencies DOT (Department of Transportation)	$107,333	0.2%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and #34 in FY2025; up 12 since Jul 2024–Jun 2025.
32	University of Houston System Top agencies DOT (Department of Transportation)	$91,352	0.2%	Rank history: not on the FY2021–FY2023 lists, #34 in FY2024 and not on the FY2025 list; up 6 since Jul 2024–Jun 2025.
33	National Academy of Sciences Top agencies DOT (Department of Transportation)	$80,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023, #8 in FY2024 and #6 in FY2025; down 24 since Jul 2024–Jun 2025.
34	University of Illinois Top agencies DOT (Department of Transportation)	$56,481	0.1%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; new, not ranked in Jul 2024–Jun 2025.
35	Sterling Computers Corporation Top agencies DHS (Department of Homeland Security)	$27,750	0.1%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36	Hptech Inc. Top agencies DOT (Department of Transportation)	$16,000	<0.1%	Rank history: not on the FY2021–FY2023 lists, #40 in FY2024 and #41 in FY2025; unchanged since Jul 2024–Jun 2025.
37	Metropolitan Atlanta Rapid Transit Authority Top agencies Commerce (Department of Commerce)	$12,920	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	Delight International Movers-Llc Top agencies DOS (Department of State)	$10,436	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	Conduent State & Local Solutions Inc. Top agencies GSA (General Services Administration)	$10,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; new, not ranked in 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 $48.4 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.

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