Top 46 Contractors in PSC AR21: R&D – Space: Science/Applications (Basic Research), Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Northrop Grumman Systems Corporation Top agencies NASA (National Aeronautics and Space Administration)	$308,423,926	73.6%	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	Association of Universities for Research In Astronomy, Inc. 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$62,212,692	14.8%	Rank history: #4 in FY2021, #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; new, not ranked in Aug 2024–Jul 2025.
3	Southwest Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$11,446,957	2.7%	Rank history: #12 in FY2021, #6 in FY2022, #7 in FY2023, #4 in FY2024 and #5 in FY2025; up 2 since Aug 2024–Jul 2025.
4	Baylor College of Medicine Top agencies NASA (National Aeronautics and Space Administration)	$6,777,231	1.6%	Rank history: #9 in FY2021, #13 in FY2022, #8 in FY2023, #3 in FY2024 and #4 in FY2025; unchanged since Aug 2024–Jul 2025.
5	Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies NASA (National Aeronautics and Space Administration)	$6,737,644	1.6%	Rank history: not on the FY2021–FY2024 lists and #3 in FY2025; up 38 since Aug 2024–Jul 2025.
6	The Regents of the University of California Top agencies NASA (National Aeronautics and Space Administration)	$6,142,356	1.5%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #7 in FY2025; up 1 since Aug 2024–Jul 2025.
7	Government of the United States 2 awardees, including Smithsonian Institution Top agencies NASA (National Aeronautics and Space Administration)	$3,572,708	0.9%	Rank history: #19 in FY2021, #38 in FY2022, #15 in FY2023, not on the FY2024 list and #8 in FY2025; new, not ranked in Aug 2024–Jul 2025.
8	The Pennsylvania State University Top agencies NASA (National Aeronautics and Space Administration)	$2,644,989	0.6%	Rank history: #28 in FY2021, #22 in FY2022, #31 in FY2023, #11 in FY2024 and #10 in FY2025; up 2 since Aug 2024–Jul 2025.
9	Lockheed Martin Corporation 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$1,181,000	0.3%	Rank history: #47 in FY2021, #33 in FY2022, #38 in FY2023, #33 in FY2024 and #15 in FY2025; up 5 since Aug 2024–Jul 2025.
10	University System of New Hampshire Top agencies NASA (National Aeronautics and Space Administration)	$1,115,085	0.3%	Rank history: not on the FY2021–FY2024 lists and #13 in FY2025; up 8 since Aug 2024–Jul 2025.
11	Massachusetts Institute of Technology Top agencies NASA (National Aeronautics and Space Administration)	$642,389	0.2%	Rank history: #27 in FY2021, #17 in FY2022, #21 in FY2023, #13 in FY2024 and #14 in FY2025; up 1 since Aug 2024–Jul 2025.
12	Arizona State University Top agencies NASA (National Aeronautics and Space Administration)	$507,309	0.1%	Rank history: #13 in FY2021, #16 in FY2022, #11 in FY2023, #6 in FY2024 and not on the FY2025 list; down 6 since Aug 2024–Jul 2025.
13	The Leland Stanford Junior University Top agencies NASA (National Aeronautics and Space Administration)	$483,005	0.1%	Rank history: #44 in FY2021, #43 in FY2022, #22 in FY2023, #49 in FY2024 and #38 in FY2025; up 23 since Aug 2024–Jul 2025.
14	CAL State La University Auxiliary Services Inc. Top agencies NASA (National Aeronautics and Space Administration)	$431,500	0.1%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; new, not ranked in Aug 2024–Jul 2025.
15	The Regents of the University of Colorado Top agencies NASA (National Aeronautics and Space Administration)	$414,168	0.1%	Rank history: #7 in FY2021, #12 in FY2022, #12 in FY2023, #12 in FY2024 and #25 in FY2025; up 14 since Aug 2024–Jul 2025.
16	Icahn School of Medicine At Mount Sinai Top agencies NASA (National Aeronautics and Space Administration)	$400,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; up 17 since Aug 2024–Jul 2025.
17	Global Atmospheric Technologies and Sciences, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$390,292	0.1%	Rank history: not on the FY2021–FY2023 lists, #97 in FY2024 and #41 in FY2025; up 23 since Aug 2024–Jul 2025.
18	Mass General Brigham Incorporated Through The General Hospital Corporation Top agencies NASA (National Aeronautics and Space Administration)	$383,311	0.1%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; up 21 since Aug 2024–Jul 2025.
19	Arizona Board of Regents 2 awardees, including Arizona State University and Northern Arizona University Top agencies NASA (National Aeronautics and Space Administration)	$348,811	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
20	National Council On Radiation Protection & Measurements Top agencies NASA (National Aeronautics and Space Administration)	$325,000	0.1%	Rank history: not on the FY2021–FY2023 lists, #78 in FY2024 and #34 in FY2025; up 35 since Aug 2024–Jul 2025.
21	National Institute of Aerospace Associates Top agencies NASA (National Aeronautics and Space Administration)	$318,458	0.1%	Rank history: #100 in FY2021, #89 in FY2022, #32 in FY2023, #17 in FY2024 and #9 in FY2025; down 13 since Aug 2024–Jul 2025.
22	Old Dominion University Research Foundation Top agencies NASA (National Aeronautics and Space Administration)	$294,010	0.1%	Rank history: #98 in FY2021, not on the FY2022–FY2023 lists, #47 in FY2024 and #39 in FY2025; up 61 since Aug 2024–Jul 2025.
23	The American Museum of Natural History Top agencies NASA (National Aeronautics and Space Administration)	$247,183	0.1%	Rank history: #93 in FY2021, #86 in FY2022, #58 in FY2023, #32 in FY2024 and #17 in FY2025; down 4 since Aug 2024–Jul 2025.
24	The Trustees of the University of Pennsylvania Top agencies NASA (National Aeronautics and Space Administration)	$213,000	0.1%	Rank history: #81 in FY2021, #83 in FY2022, #97 in FY2023, not on the FY2024 list and #65 in FY2025; up 60 since Aug 2024–Jul 2025.
25	The Trustees of Princeton University Top agencies NASA (National Aeronautics and Space Administration)	$151,383	<0.1%	Rank history: #63 in FY2021, #52 in FY2022, not on the FY2023–FY2024 lists and #18 in FY2025; down 5 since Aug 2024–Jul 2025.
26	The University of Toledo Top agencies NASA (National Aeronautics and Space Administration)	$147,437	<0.1%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #16 in FY2025; down 9 since Aug 2024–Jul 2025.
27	Space Science Institute Top agencies NASA (National Aeronautics and Space Administration)	$132,689	<0.1%	Rank history: #56 in FY2021, not on the FY2022 list, #62 in FY2023, not on the FY2024 list and #56 in FY2025; up 45 since Aug 2024–Jul 2025.
28	University of Texas System 3 awardees, including The University of Texas Southwestern Medical Center Top agencies NASA (National Aeronautics and Space Administration)	$124,902	<0.1%	Rank history: #21 in FY2021, #25 in FY2022, #14 in FY2023, #20 in FY2024 and #20 in FY2025; new, not ranked in Aug 2024–Jul 2025.
29	Albion College Top agencies NASA (National Aeronautics and Space Administration)	$122,498	<0.1%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; up 84 since Aug 2024–Jul 2025.
30	Seti Institute Top agencies NASA (National Aeronautics and Space Administration)	$121,000	<0.1%	Rank history: #23 in FY2021, #26 in FY2022, #54 in FY2023, #28 in FY2024 and #21 in FY2025; down 9 since Aug 2024–Jul 2025.
31	Planetary Science Institute Top agencies NASA (National Aeronautics and Space Administration)	$120,427	<0.1%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and #78 in FY2025; up 78 since Aug 2024–Jul 2025.
32	Brown University Top agencies NASA (National Aeronautics and Space Administration)	$110,000	<0.1%	Rank history: #51 in FY2021, #69 in FY2022, #51 in FY2023, #22 in FY2024 and #46 in FY2025; up 42 since Aug 2024–Jul 2025.
33	The University of Alabama In Huntsville Top agencies NASA (National Aeronautics and Space Administration)	$100,907	<0.1%	Rank history: not on the FY2021–FY2023 lists, #98 in FY2024 and #29 in FY2025; down 8 since Aug 2024–Jul 2025.
34	University of Illinois Top agencies NASA (National Aeronautics and Space Administration)	$100,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; up 24 since Aug 2024–Jul 2025.
35	University of Florida Top agencies NASA (National Aeronautics and Space Administration)	$100,000	<0.1%	Rank history: not on the FY2021 list, #99 in FY2022, not on the FY2023–FY2024 lists and #42 in FY2025; up 13 since Aug 2024–Jul 2025.
36	University of Arkansas for Medical Sciences Top agencies NASA (National Aeronautics and Space Administration)	$85,139	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
37	Bay Area Environmental Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$85,112	<0.1%	Rank history: #8 in FY2021, #8 in FY2022, #10 in FY2023, #84 in FY2024 and #27 in FY2025; down 10 since Aug 2024–Jul 2025.
38	Texas A & M University System Health Science Center Top agencies NASA (National Aeronautics and Space Administration)	$75,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 41 since Aug 2024–Jul 2025.
39	University of Washington Top agencies NASA (National Aeronautics and Space Administration)	$61,117	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 13 since Aug 2024–Jul 2025.
40	Texas A&M Engineering Experiment Station Top agencies NASA (National Aeronautics and Space Administration)	$60,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; up 16 since Aug 2024–Jul 2025.
41	University of Connecticut Top agencies NASA (National Aeronautics and Space Administration)	$39,996	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 50 since Aug 2024–Jul 2025.
42	San Diego State University Foundation Top agencies NASA (National Aeronautics and Space Administration)	$31,468	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
43	Beth Israel Lahey Health Inc. Through Beth Israel Deaconess Medical Center, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$25,000	<0.1%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; up 20 since Aug 2024–Jul 2025.
44	University of South Florida Top agencies NASA (National Aeronautics and Space Administration)	$7,173	<0.1%	Rank history: #88 in FY2021, not on the FY2022–FY2024 lists and #72 in FY2025; up 50 since Aug 2024–Jul 2025.
45	Guidehouse Inc. Through Peraton Inc. Top agencies NASA (National Aeronautics and Space Administration)	$6,414	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
46	Mayo Clinic Top agencies NASA (National Aeronautics and Space Administration)	$5,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; 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 $419 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