Top 100 Contractors in PSC AR21: R&D – Space: Science/Applications (Basic Research), FY2021

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Northrop Grumman Corporation 3 awardees, including Orbital Sciences LLC and Northrop Grumman Systems Corp Top agencies NASA (National Aeronautics and Space Administration)	$253,893,854	18.5%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; up 1 since FY2020.
2	The Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies NASA (National Aeronautics and Space Administration)	$153,113,191	11.1%	Rank history: #5 in FY2022, #5 in FY2023, #8 in FY2024 and not on the FY2025 list; down 1 since FY2020.
3	Adnet Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$59,614,367	4.3%	Rank history: #3 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
4	Association of Universities for Research In Astronomy, Inc. 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$58,836,075	4.3%	Rank history: #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; down 1 since FY2020.
5	State of California Controllers Office 15 awardees, including The Regents of the University of California, University of California, LOS Angeles and University of California, San Diego Top agencies NASA (National Aeronautics and Space Administration)	$47,624,731	3.5%	Rank history: #4 in FY2022, #6 in FY2023, #7 in FY2024 and not on the FY2025 list; up 1 since FY2020.
6	University System of Maryland 4 awardees, including University of Maryland, College Park, University of Maryland Baltimore County and University of Maryland Center for Environmental Science Top agencies NASA (National Aeronautics and Space Administration)	$45,167,744	3.3%	Rank history: #11 in FY2022, #85 in FY2023, #88 in FY2024 and not on the FY2025 list; up 1 since FY2020.
7	The Regents of the University of Colorado 2 awardees Top agencies NASA (National Aeronautics and Space Administration) DOI (Department of the Interior)	$24,962,776	1.8%	Rank history: #12 in FY2022, #12 in FY2023, #12 in FY2024 and #25 in FY2025; up 1 since FY2020.
8	Bay Area Environmental Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$20,408,065	1.5%	Rank history: #8 in FY2022, #10 in FY2023, #84 in FY2024 and #27 in FY2025; up 5 since FY2020.
9	Baylor College of Medicine Top agencies NASA (National Aeronautics and Space Administration)	$19,203,903	1.4%	Rank history: #13 in FY2022, #8 in FY2023, #3 in FY2024 and #4 in FY2025; up 11 since FY2020.
10	Universities Space Research Association Top agencies NASA (National Aeronautics and Space Administration)	$17,022,823	1.2%	Rank history: #15 in FY2022, #18 in FY2023, #16 in FY2024 and #12 in FY2025; up 5 since FY2020.
11	San Jose State University Research Foundation Top agencies NASA (National Aeronautics and Space Administration)	$16,732,060	1.2%	Rank history: #14 in FY2022, #36 in FY2023, not on the FY2024 list and #51 in FY2025; up 3 since FY2020.
12	Southwest Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$16,707,197	1.2%	Rank history: #6 in FY2022, #7 in FY2023, #4 in FY2024 and #5 in FY2025; down 1 since FY2020.
13	Arizona State University Top agencies NASA (National Aeronautics and Space Administration)	$15,361,553	1.1%	Rank history: #16 in FY2022, #11 in FY2023, #6 in FY2024 and #6 in FY2025; up 38 since FY2020.
14	University of Washington Top agencies NASA (National Aeronautics and Space Administration)	$14,631,853	1.1%	Rank history: #19 in FY2022, #23 in FY2023, #26 in FY2024 and not on the FY2025 list; up 12 since FY2020.
15	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies NASA (National Aeronautics and Space Administration)	$14,237,000	1.0%	Rank history: #7 in FY2022, not on the FY2023 list, #5 in FY2024 and not on the FY2025 list; down 6 since FY2020.
16	Board of Governers State University System of Florida 7 awardees, including The University of Central Florida Board of Trustees, University of Florida and Florida International University Top agencies NASA (National Aeronautics and Space Administration)	$13,743,265	1.0%	Rank history: #18 in FY2022, #16 in FY2023, #21 in FY2024 and not on the FY2025 list; up 6 since FY2020.
17	University of Oklahoma Top agencies NASA (National Aeronautics and Space Administration)	$13,176,243	1.0%	Rank history: #10 in FY2022, #4 in FY2023 and not on the FY2024–FY2025 lists; down 12 since FY2020.
18	State of Arizona Through University of Arizona Top agencies NASA (National Aeronautics and Space Administration)	$13,081,019	1.0%	Rank history: #49 in FY2022, #28 in FY2023 and not on the FY2024–FY2025 lists; up 9 since FY2020.
19	Government of the United States 2 awardees, including Smithsonian Institution Top agencies NASA (National Aeronautics and Space Administration)	$11,341,636	0.8%	Rank history: #38 in FY2022, #15 in FY2023 and not on the FY2024–FY2025 lists; up 35 since FY2020.
20	University Corporation for Atmospheric Research Top agencies NASA (National Aeronautics and Space Administration)	$10,846,800	0.8%	Rank history: #20 in FY2022, #13 in FY2023, #10 in FY2024 and #19 in FY2025; down 2 since FY2020.
21	University of Texas System 11 awardees, including University of Texas At Austin, University of Texas At Arlington and The University of Texas At San Antonio Top agencies NASA (National Aeronautics and Space Administration)	$10,510,463	0.8%	Rank history: #25 in FY2022, #14 in FY2023, #20 in FY2024 and not on the FY2025 list; up 3 since FY2020.
22	University of Hawaii Systems 2 awardees, including University of Hawaii Top agencies NASA (National Aeronautics and Space Administration)	$10,278,666	0.7%	Rank history: #39 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2020.
23	Seti Institute Top agencies NASA (National Aeronautics and Space Administration)	$9,776,323	0.7%	Rank history: #26 in FY2022, #54 in FY2023, #28 in FY2024 and #20 in FY2025; down 2 since FY2020.
24	The Trustees of Columbia University In the City of New York 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$9,401,493	0.7%	Rank history: #21 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
25	Georgia TECH Research Corp Top agencies NASA (National Aeronautics and Space Administration)	$8,289,639	0.6%	Rank history: #95 in FY2022, #71 in FY2023, #55 in FY2024 and not on the FY2025 list; up 5 since FY2020.
26	The Innovation Foundation At Oklahoma State University, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$7,774,493	0.6%	Rank history: #28 in FY2022 and not on the FY2023–FY2025 lists; up 5 since FY2020.
27	Massachusetts Institute of Technology Top agencies NASA (National Aeronautics and Space Administration)	$7,668,071	0.6%	Rank history: #17 in FY2022, #21 in FY2023, #13 in FY2024 and #14 in FY2025; down 11 since FY2020.
28	The Pennsylvania State University Top agencies NASA (National Aeronautics and Space Administration)	$7,577,541	0.6%	Rank history: #22 in FY2022, #31 in FY2023, #11 in FY2024 and #10 in FY2025; down 3 since FY2020.
29	University System of New Hampshire Top agencies NASA (National Aeronautics and Space Administration)	$7,173,296	0.5%	Rank history: #24 in FY2022, #19 in FY2023, #15 in FY2024 and not on the FY2025 list; up 42 since FY2020.
30	University of Wisconsin System 2 awardees Top agencies NASA (National Aeronautics and Space Administration) DOI (Department of the Interior)	$7,057,739	0.5%	Rank history: #30 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; up 34 since FY2020.
31	Regents of the University of Michigan Top agencies NASA (National Aeronautics and Space Administration)	$7,042,303	0.5%	Rank history: #29 in FY2022, #26 in FY2023, #30 in FY2024 and #86 in FY2025; down 19 since FY2020.
32	The Washington University Top agencies NASA (National Aeronautics and Space Administration)	$6,986,426	0.5%	Rank history: #45 in FY2022, #39 in FY2023, #43 in FY2024 and not on the FY2025 list; up 3 since FY2020.
33	California Institute of Technology Top agencies NASA (National Aeronautics and Space Administration)	$6,786,341	0.5%	Rank history: #35 in FY2022 and not on the FY2023–FY2025 lists; down 16 since FY2020.
34	University of Illinois 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$6,747,652	0.5%	Rank history: #32 in FY2022, #30 in FY2023, #27 in FY2024 and not on the FY2025 list; up 19 since FY2020.
35	Planetary Science Institute Top agencies NASA (National Aeronautics and Space Administration)	$6,693,796	0.5%	Rank history: #37 in FY2022, #84 in FY2023 and not on the FY2024–FY2025 lists; up 26 since FY2020.
36	Purdue University Top agencies NASA (National Aeronautics and Space Administration)	$5,645,570	0.4%	Rank history: #27 in FY2022, #17 in FY2023, #14 in FY2024 and not on the FY2025 list; down 2 since FY2020.
37	Leonardo S.p.A. Through DRS Network & Imaging Systems LLC Top agencies NASA (National Aeronautics and Space Administration)	$5,595,708	0.4%	Rank history: #34 in FY2022, #68 in FY2023 and not on the FY2024–FY2025 lists; up 62 since FY2020.
38	University of Montana System 2 awardees, including Montana State University and University of Montana Top agencies NASA (National Aeronautics and Space Administration)	$5,486,500	0.4%	Rank history: #48 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
39	The Texas A&M University System 7 awardees, including Texas A&M Engineering Experiment Station, Texas A & M University and Texas A & M University System Health Science Center Top agencies NASA (National Aeronautics and Space Administration)	$5,174,303	0.4%	Rank history: #59 in FY2022, #75 in FY2023 and not on the FY2024–FY2025 lists; up 40 since FY2020.
40	Woods Hole Oceanographic Institution Top agencies NASA (National Aeronautics and Space Administration)	$4,980,991	0.4%	Rank history: #36 in FY2022, #25 in FY2023, #52 in FY2024 and #72 in FY2025; up 15 since FY2020.
41	California Association for Research In Astronomy Top agencies NASA (National Aeronautics and Space Administration)	$4,964,751	0.4%	Rank history: #31 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; up 26 since FY2020.
42	The University of Alabama System 2 awardees, including The University of Alabama In Huntsville and University of Alabama Top agencies NASA (National Aeronautics and Space Administration)	$4,879,321	0.4%	Rank history: #46 in FY2022, #48 in FY2023, #73 in FY2024 and not on the FY2025 list; up 15 since FY2020.
43	The University of Chicago Top agencies NASA (National Aeronautics and Space Administration)	$4,763,306	0.3%	Rank history: not on the FY2022–FY2024 lists and #55 in FY2025; up 17 since FY2020.
44	The Leland Stanford Junior University Top agencies NASA (National Aeronautics and Space Administration)	$4,458,372	0.3%	Rank history: #43 in FY2022, #22 in FY2023, #49 in FY2024 and #38 in FY2025; down 21 since FY2020.
45	The Research Foundation for the State University of New York 5 awardees Top agencies NASA (National Aeronautics and Space Administration)	$4,365,035	0.3%	Rank history: #58 in FY2022, #41 in FY2023, not on the FY2024 list and #80 in FY2025; up 80 since FY2020.
46	Trustees of Boston University 2 awardees Top agencies NASA (National Aeronautics and Space Administration) DOI (Department of the Interior)	$4,262,624	0.3%	Rank history: #42 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; down 18 since FY2020.
47	Lockheed Martin Corporation 2 awardees Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$4,002,388	0.3%	Rank history: #33 in FY2022, #38 in FY2023, not on the FY2024 list and #15 in FY2025; up 156 since FY2020.
48	Rutgers, the State University 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$3,946,229	0.3%	Rank history: #53 in FY2022, #79 in FY2023, #40 in FY2024 and not on the FY2025 list; up 26 since FY2020.
49	Regents of the University of Minnesota 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$3,716,291	0.3%	Rank history: #51 in FY2022, #74 in FY2023, #34 in FY2024 and not on the FY2025 list; up 33 since FY2020.
50	University of Alaska System 2 awardees, including University of Alaska Fairbanks and University of Alaska Anchorage Top agencies NASA (National Aeronautics and Space Administration)	$3,656,518	0.3%	Rank history: #40 in FY2022, #29 in FY2023, #24 in FY2024 and not on the FY2025 list; up 8 since FY2020.
51	Brown University Top agencies NASA (National Aeronautics and Space Administration)	$3,653,165	0.3%	Rank history: #69 in FY2022, #51 in FY2023, #22 in FY2024 and #46 in FY2025; up 32 since FY2020.
52	University of Massachusetts 4 awardees, including University of Massachusetts Lowell and University of Mass At Boston Top agencies NASA (National Aeronautics and Space Administration) DOI (Department of the Interior)	$3,467,422	0.3%	Rank history: #44 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; up 53 since FY2020.
53	Cornell University 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$3,284,894	0.2%	Rank history: #64 in FY2022, #66 in FY2023, #35 in FY2024 and not on the FY2025 list; up 97 since FY2020.
54	Hampton University Top agencies NASA (National Aeronautics and Space Administration)	$3,255,357	0.2%	Rank history: #41 in FY2022, #56 in FY2023, #38 in FY2024 and #32 in FY2025; up 23 since FY2020.
55	Michigan Technological University Top agencies NASA (National Aeronautics and Space Administration)	$3,254,742	0.2%	Rank history: #55 in FY2022, #44 in FY2023, not on the FY2024 list and #54 in FY2025; down 7 since FY2020.
56	Space Science Institute Top agencies NASA (National Aeronautics and Space Administration)	$3,188,818	0.2%	Rank history: not on the FY2022 list, #62 in FY2023, not on the FY2024 list and #56 in FY2025; up 20 since FY2020.
57	The Ohio State University Top agencies NASA (National Aeronautics and Space Administration)	$3,136,178	0.2%	Rank history: not on the FY2022–FY2025 lists; up 49 since FY2020.
58	Oregon University System 2 awardees, including Oregon State University and Portland State University Top agencies NASA (National Aeronautics and Space Administration)	$3,104,604	0.2%	Rank history: #60 in FY2022, #70 in FY2023, #46 in FY2024 and not on the FY2025 list; up 27 since FY2020.
59	Rensselaer Polytechnic Institute Top agencies NASA (National Aeronautics and Space Administration)	$3,055,380	0.2%	Rank history: #62 in FY2022, #35 in FY2023, #29 in FY2024 and not on the FY2025 list; up 84 since FY2020.
60	Colorado State University System Through Colorado State University Top agencies NASA (National Aeronautics and Space Administration)	$3,054,621	0.2%	Rank history: #76 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; up 13 since FY2020.
61	Northern Arizona University Top agencies NASA (National Aeronautics and Space Administration)	$3,042,610	0.2%	Rank history: #78 in FY2022, #65 in FY2023, #48 in FY2024 and #26 in FY2025; up 8 since FY2020.
62	University of Utah Top agencies NASA (National Aeronautics and Space Administration)	$2,997,041	0.2%	Rank history: #66 in FY2022, #59 in FY2023, #53 in FY2024 and not on the FY2025 list; up 18 since FY2020.
63	The Trustees of Princeton University Top agencies NASA (National Aeronautics and Space Administration)	$2,938,789	0.2%	Rank history: #52 in FY2022, not on the FY2023–FY2024 lists and #18 in FY2025; down 13 since FY2020.
64	Catholic University of America (The) Top agencies NASA (National Aeronautics and Space Administration)	$2,905,312	0.2%	Rank history: not on the FY2022–FY2025 lists; down 28 since FY2020.
65	Texas State University System Through Texas State University Top agencies NASA (National Aeronautics and Space Administration)	$2,797,961	0.2%	Rank history: not on the FY2022–FY2025 lists; up 26 since FY2020.
66	William Marsh Rice University Top agencies NASA (National Aeronautics and Space Administration)	$2,794,646	0.2%	Rank history: #70 in FY2022, #57 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
67	George Mason University Top agencies NASA (National Aeronautics and Space Administration)	$2,722,122	0.2%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
68	Michigan State University Top agencies NASA (National Aeronautics and Space Administration)	$2,660,228	0.2%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; up 127 since FY2020.
69	University of Tennessee Top agencies NASA (National Aeronautics and Space Administration)	$2,559,294	0.2%	Rank history: not on the FY2022–FY2025 lists; up 143 since FY2020.
70	Nevada State Veterans Home 4 awardees, including Nevada System of Higher Education Board of Regents, Board of Regents of Nevada System of Higher Education and Nevada System of Higher Education Top agencies NASA (National Aeronautics and Space Administration) DOI (Department of the Interior)	$2,533,997	0.2%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
71	The University of Iowa Top agencies NASA (National Aeronautics and Space Administration)	$2,522,220	0.2%	Rank history: #68 in FY2022, not on the FY2023–FY2024 lists and #45 in FY2025; down 22 since FY2020.
72	RTX Corporation 3 awardees, including Raytheon Company and Rockwell Collins, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$2,496,881	0.2%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; up 30 since FY2020.
73	Virginia Polytechnic Institute & State University 2 awardees, including Christopher Newport University Top agencies NASA (National Aeronautics and Space Administration)	$2,369,185	0.2%	Rank history: not on the FY2022–FY2025 lists; up 42 since FY2020.
74	University of Puerto Rico 5 awardees, including University of Puerto Rico Medical Sciences Campus Top agencies NASA (National Aeronautics and Space Administration)	$2,349,451	0.2%	Rank history: #73 in FY2022, #47 in FY2023, #65 in FY2024 and not on the FY2025 list; up 15 since FY2020.
75	University of Delaware Top agencies NASA (National Aeronautics and Space Administration)	$2,324,670	0.2%	Rank history: #57 in FY2022, #34 in FY2023, #37 in FY2024 and #62 in FY2025; down 29 since FY2020.
76	Rochester Institute of Technology Top agencies NASA (National Aeronautics and Space Administration)	$2,293,146	0.2%	Rank history: not on the FY2022–FY2025 lists; up 42 since FY2020.
77	President and Fellows of Harvard College 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$2,246,038	0.2%	Rank history: #63 in FY2022, #78 in FY2023 and not on the FY2024–FY2025 lists; up 31 since FY2020.
78	The City University of New York 9 awardees, including Research Foundation of the City University of New York Top agencies NASA (National Aeronautics and Space Administration)	$2,196,309	0.2%	Rank history: #81 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; up 70 since FY2020.
79	New Mexico State University Top agencies NASA (National Aeronautics and Space Administration)	$2,158,394	0.2%	Rank history: #91 in FY2022, #91 in FY2023, #79 in FY2024 and not on the FY2025 list; up 35 since FY2020.
80	Georgetown University Top agencies NASA (National Aeronautics and Space Administration)	$2,146,673	0.2%	Rank history: #47 in FY2022, #73 in FY2023, #95 in FY2024 and #53 in FY2025; up 20 since FY2020.
81	The Trustees of the University of Pennsylvania Top agencies NASA (National Aeronautics and Space Administration)	$2,050,926	0.1%	Rank history: #83 in FY2022, #97 in FY2023, not on the FY2024 list and #67 in FY2025; up 32 since FY2020.
82	DRS Network & Imaging Systems LLC Top agencies NASA (National Aeronautics and Space Administration)	$2,031,512	0.1%	Rank history: not on the FY2022–FY2025 lists; up 165 since FY2020.
83	The Vanderbilt University Top agencies NASA (National Aeronautics and Space Administration)	$1,963,124	0.1%	Rank history: not on the FY2022–FY2025 lists; up 33 since FY2020.
84	Carnegie-Mellon University Top agencies NASA (National Aeronautics and Space Administration)	$1,931,558	0.1%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; up 75 since FY2020.
85	University of Southern California Top agencies NASA (National Aeronautics and Space Administration)	$1,892,761	0.1%	Rank history: #97 in FY2022 and not on the FY2023–FY2025 lists; up 37 since FY2020.
86	Trustees of Dartmouth College Top agencies NASA (National Aeronautics and Space Administration)	$1,888,297	0.1%	Rank history: not on the FY2022–FY2025 lists; up 31 since FY2020.
87	University of Toledo Top agencies NASA (National Aeronautics and Space Administration)	$1,882,782	0.1%	Rank history: #80 in FY2022, #43 in FY2023 and not on the FY2024–FY2025 lists; up 87 since FY2020.
88	University of South Florida Top agencies NASA (National Aeronautics and Space Administration)	$1,827,792	0.1%	Rank history: not on the FY2022–FY2024 lists and #73 in FY2025; up 24 since FY2020.
89	Kentucky Science & Technology Corp Through STI Legacy, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,799,395	0.1%	Rank history: #72 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; down 44 since FY2020.
90	American University Top agencies NASA (National Aeronautics and Space Administration)	$1,798,346	0.1%	Rank history: #75 in FY2022, #50 in FY2023, #41 in FY2024 and not on the FY2025 list; down 3 since FY2020.
91	Ball Corp Through BAE Systems Space & Mission Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,734,049	0.1%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; up 3 since FY2020.
92	University of New Mexico Top agencies NASA (National Aeronautics and Space Administration)	$1,720,557	0.1%	Rank history: not on the FY2022–FY2025 lists; up 119 since FY2020.
93	The American Museum of Natural History Top agencies NASA (National Aeronautics and Space Administration)	$1,637,623	0.1%	Rank history: #86 in FY2022, #58 in FY2023, #32 in FY2024 and #17 in FY2025; up 41 since FY2020.
94	For Inspiration and Recognition of Science and Technology (First) Top agencies NASA (National Aeronautics and Space Administration)	$1,619,829	0.1%	Rank history: not on the FY2022 list, #27 in FY2023 and not on the FY2024–FY2025 lists; up 45 since FY2020.
95	West Virginia University Through West Virginia University Research Corporation Top agencies NASA (National Aeronautics and Space Administration)	$1,612,092	0.1%	Rank history: #96 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; up 71 since FY2020.
96	University of Kentucky Through The University of Kentucky Research Foundation Top agencies NASA (National Aeronautics and Space Administration)	$1,555,484	0.1%	Rank history: not on the FY2022–FY2023 lists, #74 in FY2024 and not on the FY2025 list; up 67 since FY2020.
97	Arkansas University Of 4 awardees, including University of Arkansas System, University of Arkansas and University of Arkansas for Medical Sciences Top agencies NASA (National Aeronautics and Space Administration)	$1,539,939	0.1%	Rank history: not on the FY2022–FY2025 lists; up 78 since FY2020.
98	Old Dominion University Research Foundation Top agencies NASA (National Aeronautics and Space Administration)	$1,535,893	0.1%	Rank history: not on the FY2022–FY2023 lists, #47 in FY2024 and #39 in FY2025; up 51 since FY2020.
99	Gulf of Maine Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$1,533,447	0.1%	Rank history: #61 in FY2022, #33 in FY2023, #18 in FY2024 and #11 in FY2025; up 58 since FY2020.
100	National Institute of Aerospace Associates Top agencies NASA (National Aeronautics and Space Administration)	$1,532,536	0.1%	Rank history: #89 in FY2022, #32 in FY2023, #17 in FY2024 and #9 in FY2025; up 82 since FY2020.

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 $1.37 billion 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.
• Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2020. "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. The step from FY2020 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers