Top 100 Contractors in PSC AR: Space R&D Services, FY2025

Name: Top 100 Contractors in PSC AR: Space R&D Services, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 81% of FY2025 PSC AR contract dollars

Contract obligations: $9,809,851,562 Net of deobligations, by contracts coded PSC AR or a code under it
Contractors: 338 Parent companies with an obligation
Largest contractor: California Institute of Technology $2.35 billion, 23.4% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	California Institute of Technology 2 awardees Top agencies NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$2,348,079,266	23.4%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	The Boeing Company 9 awardees, including Millennium Space Systems, Inc. and Boeing Aerospace Operations, Inc. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$1,424,160,357	14.2%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	Northrop Grumman Corporation 6 awardees, including Northrop Grumman Systems Corporation and Scaled Composites, LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$1,395,024,903	13.9%	Rank history: #3 in FY2021, #3 in FY2022, #3 in FY2023 and #3 in FY2024; unchanged since FY2024.
4	Blue Origin Washington, LLC Top agencies NASA (National Aeronautics and Space Administration)	$829,560,675	8.3%	Rank history: #22 in FY2021, #58 in FY2022, #7 in FY2023 and #6 in FY2024; up 2 since FY2024.
5	Lockheed Martin Corporation 5 awardees Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce) USAF (Department of the Air Force)	$727,434,321	7.2%	Rank history: #4 in FY2021, #5 in FY2022, #5 in FY2023 and #5 in FY2024; unchanged since FY2024.
6	Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$446,461,273	4.4%	Rank history: not on the FY2021–FY2024 lists; new.
7	Association of Universities for Research In Astronomy, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$306,043,098	3.0%	Rank history: #11 in FY2021, #8 in FY2022, #9 in FY2023 and #9 in FY2024; up 2 since FY2024.
8	Bechtel Corp Through Bechtel National, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$272,595,908	2.7%	Rank history: #18 in FY2021, #25 in FY2022, #8 in FY2023 and #8 in FY2024; unchanged since FY2024.
9	Space Exploration Technologies Corp. Top agencies NASA (National Aeronautics and Space Administration) OSD (Office of the Secretary of Defense)	$248,251,463	2.5%	Rank history: #5 in FY2021, #4 in FY2022, #4 in FY2023 and #4 in FY2024; down 5 since FY2024.
10	York Space Systems LLC Top agencies USAF (Department of the Air Force)	$154,129,830	1.5%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2024; unchanged since FY2024.
11	L3Harris Technologies, Inc. 6 awardees, including Aerojet Rocketdyne, Inc. Top agencies Commerce (Department of Commerce) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$128,079,472	1.3%	Rank history: #37 in FY2021, #28 in FY2022, #10 in FY2023 and #12 in FY2024; up 1 since FY2024.
12	The Aerospace Corporation Top agencies NASA (National Aeronautics and Space Administration) DOE (Department of Energy)	$107,090,643	1.1%	Rank history: #30 in FY2021, #21 in FY2022, #16 in FY2023 and #16 in FY2024; up 4 since FY2024.
13	Firefly Aerospace Inc. Top agencies NASA (National Aeronautics and Space Administration)	$94,470,624	0.9%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2024; up 11 since FY2024.
14	Adnet Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$83,873,612	0.8%	Rank history: #21 in FY2021, #17 in FY2022, #18 in FY2023 and #18 in FY2024; up 4 since FY2024.
15	University of Maryland, College Park Top agencies NASA (National Aeronautics and Space Administration)	$80,477,114	0.8%	Rank history: #79 in FY2021, #59 in FY2022, #58 in FY2023 and #23 in FY2024; up 8 since FY2024.
16	BAE Systems Space & Mission Systems Inc. Top agencies Commerce (Department of Commerce) USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$75,743,442	0.8%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; up 9 since FY2024.
17	Smithsonian Institution 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$73,496,245	0.7%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; up 2 since FY2024.
18	Southwest Research Institute Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce)	$73,353,044	0.7%	Rank history: #25 in FY2021, #22 in FY2022, #22 in FY2023 and #22 in FY2024; up 4 since FY2024.
19	The Regents of the University of California 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$67,817,559	0.7%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2024; up 21 since FY2024.
20	Peraton Inc. Top agencies NASA (National Aeronautics and Space Administration) Navy (Department of the Navy)	$67,116,869	0.7%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; down 3 since FY2024.
21	Modern Technology Solutions, Inc. Top agencies USAF (Department of the Air Force)	$56,131,451	0.6%	Rank history: not on the FY2021–FY2023 lists and #87 in FY2024; up 66 since FY2024.
22	Tecolote Research, Inc. Top agencies USAF (Department of the Air Force)	$40,265,006	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
23	University of Arizona Top agencies NASA (National Aeronautics and Space Administration)	$37,285,340	0.4%	Rank history: not on the FY2021 list, #76 in FY2022, #73 in FY2023 and #75 in FY2024; up 52 since FY2024.
24	Parsons Corporation 2 awardees, including Space Ground System Solutions, Inc. Top agencies Navy (Department of the Navy)	$33,910,328	0.3%	Rank history: #14 in FY2021, #14 in FY2022, #11 in FY2023 and #27 in FY2024; up 3 since FY2024.
25	The University of Alabama In Huntsville Top agencies NASA (National Aeronautics and Space Administration)	$30,805,783	0.3%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2024; up 35 since FY2024.
26	University of Maryland Baltimore County Top agencies NASA (National Aeronautics and Space Administration)	$24,543,190	0.2%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2024; up 33 since FY2024.
27	The Regents of the University of Colorado Top agencies NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce)	$22,576,671	0.2%	Rank history: #19 in FY2021, #20 in FY2022, #28 in FY2023 and #28 in FY2024; up 1 since FY2024.
28	Apex Technology, Inc. Top agencies USAF (Department of the Air Force)	$22,000,000	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
29	Analytical Mechanics Associates Inc. Top agencies NASA (National Aeronautics and Space Administration)	$21,069,297	0.2%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023 and #52 in FY2024; up 23 since FY2024.
30	KBR Wyle Services LLC Top agencies NASA (National Aeronautics and Space Administration)	$20,323,898	0.2%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; up 12 since FY2024.
31	Catholic University of America (The) Top agencies NASA (National Aeronautics and Space Administration)	$20,033,005	0.2%	Rank history: #44 in FY2021, #46 in FY2022, #40 in FY2023 and #30 in FY2024; down 1 since FY2024.
32	The University of Iowa Top agencies NASA (National Aeronautics and Space Administration)	$19,387,495	0.2%	Rank history: #71 in FY2021, #11 in FY2022, #43 in FY2023 and #54 in FY2024; up 22 since FY2024.
33	RTX Corporation 7 awardees, including Blue Canyon Technologies LLC, Hamilton Sundstrand Space Systems International, Inc. and Raytheon Company Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$17,780,020	0.2%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2024; up 6 since FY2024.
34	Arizona State University Top agencies NASA (National Aeronautics and Space Administration)	$16,985,784	0.2%	Rank history: #34 in FY2021, #38 in FY2022, #34 in FY2023 and #34 in FY2024; unchanged since FY2024.
35	Baylor College of Medicine Top agencies NASA (National Aeronautics and Space Administration)	$15,834,295	0.2%	Rank history: #41 in FY2021, #51 in FY2022, #39 in FY2023 and #38 in FY2024; up 3 since FY2024.
36	Aegis Aerospace Inc. 2 awardees, including Alpha Space Test and Research Alliance, LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$14,684,937	0.1%	Rank history: #63 in FY2021, #48 in FY2022, #38 in FY2023 and #32 in FY2024; down 4 since FY2024.
37	Morehead Space Technologies LLC Top agencies NASA (National Aeronautics and Space Administration)	$14,222,170	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
38	University System of New Hampshire Top agencies NASA (National Aeronautics and Space Administration)	$14,099,878	0.1%	Rank history: not on the FY2021–FY2024 lists; up 167 since FY2024.
39	Booz Allen Hamilton Holding Corporation 2 awardees, including Everwatch Solutions Inc. Top agencies Navy (Department of the Navy)	$13,977,277	0.1%	Rank history: #89 in FY2021, #88 in FY2022, not on the FY2023 list and #51 in FY2024; up 12 since FY2024.
40	United Launch Alliance, L.L.C. 2 awardees, including United Launch Services, LLC Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$13,495,530	0.1%	Rank history: #7 in FY2021, #9 in FY2022, #12 in FY2023 and #15 in FY2024; down 25 since FY2024.
41	Center for the Advancement of Science In Space, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$13,000,000	0.1%	Rank history: not on the FY2021–FY2024 lists; up 73 since FY2024.
42	Impulse Space, Inc. Top agencies USAF (Department of the Air Force)	$12,750,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
43	Sierra Nevada Company, LLC 2 awardees, including Sierra Space Corp Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$11,955,456	0.1%	Rank history: #57 in FY2021, #44 in FY2022, #54 in FY2023 and #48 in FY2024; up 5 since FY2024.
44	The Leland Stanford Junior University Top agencies NASA (National Aeronautics and Space Administration)	$11,940,179	0.1%	Rank history: #68 in FY2021, #47 in FY2022, #37 in FY2023 and #53 in FY2024; up 9 since FY2024.
45	Lanteris Space LLC Top agencies NASA (National Aeronautics and Space Administration)	$9,660,245	0.1%	Rank history: not on the FY2021–FY2024 lists; up 107 since FY2024.
46	Assurance Technology Corp Top agencies Navy (Department of the Navy) Commerce (Department of Commerce)	$8,987,505	0.1%	Rank history: #47 in FY2021, #55 in FY2022, #82 in FY2023 and #67 in FY2024; up 21 since FY2024.
47	Map Large, Inc. Top agencies OSD (Office of the Secretary of Defense)	$8,824,347	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
48	Sierra Lobo Inc. Top agencies NASA (National Aeronautics and Space Administration)	$8,028,567	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
49	Ursa Space Systems Inc. Top agencies OSD (Office of the Secretary of Defense)	$7,026,021	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
50	Redwire Space Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$6,929,830	0.1%	Rank history: not on the FY2021–FY2023 lists and #89 in FY2024; up 39 since FY2024.
51	Western Digital Technologies Inc. Top agencies USAF (Department of the Air Force)	$6,667,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
52	Technology Service Corp Top agencies Navy (Department of the Navy)	$6,509,464	0.1%	Rank history: not on the FY2021 list, #60 in FY2022, #46 in FY2023 and #44 in FY2024; down 8 since FY2024.
53	STI Legacy, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$6,367,830	0.1%	Rank history: not on the FY2021–FY2024 lists; up 190 since FY2024.
54	Teledyne Technologies Incorporated 2 awardees, including Teledyne Brown Engineering, Inc. and Teledyne Energy Systems, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$6,326,997	0.1%	Rank history: #28 in FY2021, #42 in FY2022, #36 in FY2023 and #43 in FY2024; down 11 since FY2024.
55	Forward Edge Ai Inc. Top agencies USAF (Department of the Air Force)	$6,225,447	0.1%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023 and #35 in FY2024; down 20 since FY2024.
56	California Association for Research In Astronomy Top agencies NASA (National Aeronautics and Space Administration)	$5,899,000	0.1%	Rank history: #93 in FY2021, #89 in FY2022, #74 in FY2023 and #72 in FY2024; up 16 since FY2024.
57	Science & Technology Corporation Top agencies NASA (National Aeronautics and Space Administration)	$5,719,212	0.1%	Rank history: #52 in FY2021, #53 in FY2022, #47 in FY2023 and #37 in FY2024; down 20 since FY2024.
58	Nanoracks LLC 2 awardees Top agencies NASA (National Aeronautics and Space Administration)	$5,537,301	0.1%	Rank history: #75 in FY2021, #77 in FY2022, #65 in FY2023 and #47 in FY2024; down 11 since FY2024.
59	Regents of the University of Michigan Top agencies NASA (National Aeronautics and Space Administration)	$5,372,038	0.1%	Rank history: #74 in FY2021, #64 in FY2022, #62 in FY2023 and #63 in FY2024; up 4 since FY2024.
60	Optisense Inc. Top agencies OSD (Office of the Secretary of Defense)	$5,315,131	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
61	San Jose State University Research Foundation Top agencies NASA (National Aeronautics and Space Administration)	$4,897,507	<0.1%	Rank history: #45 in FY2021, #54 in FY2022, #93 in FY2023 and not on the FY2024 list; up 61 since FY2024.
62	Carnegie-Mellon University Top agencies NASA (National Aeronautics and Space Administration)	$4,844,543	<0.1%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2024; up 15 since FY2024.
63	Silicon Technologies Inc Top agencies USAF (Department of the Air Force)	$4,780,000	<0.1%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2024; up 30 since FY2024.
64	Spacebilt Inc. Top agencies OSD (Office of the Secretary of Defense)	$4,698,957	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
65	The University of Toledo Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$4,630,605	<0.1%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2024; up 5 since FY2024.
66	Utah State University Space Dynamics Laboratory Top agencies NASA (National Aeronautics and Space Administration)	$4,362,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 391 since FY2024.
67	Zin Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$4,360,628	<0.1%	Rank history: #56 in FY2021, #41 in FY2022, #51 in FY2023 and #56 in FY2024; down 11 since FY2024.
68	The Trustees of Princeton University Top agencies NASA (National Aeronautics and Space Administration)	$4,231,806	<0.1%	Rank history: #62 in FY2021, #49 in FY2022, #50 in FY2023 and #45 in FY2024; down 23 since FY2024.
69	University of California, LOS Angeles Top agencies NASA (National Aeronautics and Space Administration)	$4,139,095	<0.1%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2024; up 2 since FY2024.
70	Special Aerospace Services, LLC Top agencies NASA (National Aeronautics and Space Administration)	$3,999,522	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
71	Blue Origin, LLC Top agencies NASA (National Aeronautics and Space Administration)	$3,988,547	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
72	Wichita State University Top agencies NASA (National Aeronautics and Space Administration)	$3,862,849	<0.1%	Rank history: not on the FY2021 list, #74 in FY2022, not on the FY2023 list and #82 in FY2024; up 10 since FY2024.
73	Anasphere, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$3,458,993	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
74	Edgecortix Corp Top agencies OSD (Office of the Secretary of Defense)	$3,439,564	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
75	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$3,419,077	<0.1%	Rank history: #10 in FY2021, #29 in FY2022, #83 in FY2023 and not on the FY2024 list; up 68 since FY2024.
76	University of Florida Top agencies NASA (National Aeronautics and Space Administration)	$3,157,527	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 63 since FY2024.
77	Seti Institute Top agencies NASA (National Aeronautics and Space Administration)	$3,126,951	<0.1%	Rank history: #64 in FY2021, #78 in FY2022, #90 in FY2023 and #98 in FY2024; up 21 since FY2024.
78	University of Notre Dame DU Lac Top agencies NASA (National Aeronautics and Space Administration)	$3,095,980	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 229 since FY2024.
79	Bay Area Environmental Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$3,061,127	<0.1%	Rank history: #39 in FY2021, #36 in FY2022, #49 in FY2023 and #94 in FY2024; up 15 since FY2024.
80	National Institute of Aerospace Associates Top agencies NASA (National Aeronautics and Space Administration)	$2,980,076	<0.1%	Rank history: #32 in FY2021, #40 in FY2022, #55 in FY2023 and not on the FY2024 list; up 27 since FY2024.
81	Tennessee Technological University Top agencies NASA (National Aeronautics and Space Administration)	$2,974,067	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 42 since FY2024.
82	The Pennsylvania State University Top agencies NASA (National Aeronautics and Space Administration)	$2,822,368	<0.1%	Rank history: #78 in FY2021, #72 in FY2022, #96 in FY2023 and #91 in FY2024; up 9 since FY2024.
83	University Corporation for Atmospheric Research Top agencies NASA (National Aeronautics and Space Administration)	$2,759,513	<0.1%	Rank history: #59 in FY2021, #70 in FY2022, #57 in FY2023 and #64 in FY2024; down 19 since FY2024.
84	Quantech Services Inc. Top agencies USAF (Department of the Air Force)	$2,713,003	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
85	Jackson Bond Enterprises, LLC Top agencies NASA (National Aeronautics and Space Administration)	$2,638,570	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 56 since FY2024.
86	Massachusetts Institute of Technology Top agencies NASA (National Aeronautics and Space Administration)	$2,573,366	<0.1%	Rank history: #70 in FY2021, #57 in FY2022, #67 in FY2023 and #84 in FY2024; down 2 since FY2024.
87	Gulf of Maine Research Institute Top agencies NASA (National Aeronautics and Space Administration)	$2,555,894	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 19 since FY2024.
88	Planetary Science Institute Top agencies NASA (National Aeronautics and Space Administration)	$2,532,677	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 135 since FY2024.
89	Paragon Space Development Corporation Top agencies NASA (National Aeronautics and Space Administration)	$2,472,266	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 119 since FY2024.
90	Universities Space Research Association Top agencies NASA (National Aeronautics and Space Administration)	$2,415,700	<0.1%	Rank history: #35 in FY2021, #45 in FY2022 and not on the FY2023–FY2024 lists; returned.
91	Astrobotic Technology Inc Top agencies NASA (National Aeronautics and Space Administration)	$2,385,265	<0.1%	Rank history: #13 in FY2021, #10 in FY2022, #20 in FY2023 and #86 in FY2024; down 5 since FY2024.
92	Omitron, Inc. Top agencies USAF (Department of the Air Force)	$2,305,271	<0.1%	Rank history: not on the FY2021–FY2022 lists, #87 in FY2023 and not on the FY2024 list; up 32 since FY2024.
93	Eta Space LLC Top agencies NASA (National Aeronautics and Space Administration)	$2,302,366	<0.1%	Rank history: #91 in FY2021, #96 in FY2022, #44 in FY2023 and not on the FY2024 list; returned.
94	Bluehalo Labs, LLC Top agencies USAF (Department of the Air Force)	$2,255,023	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 18 since FY2024.
95	University of Massachusetts Lowell Top agencies NASA (National Aeronautics and Space Administration)	$2,226,583	<0.1%	Rank history: not on the FY2021–FY2024 lists; up 154 since FY2024.
96	Jetzero, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$2,152,061	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Thinkorbital Inc. Top agencies USAF (Department of the Air Force)	$2,000,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
98	Nearspace Launch Inc. Top agencies Navy (Department of the Navy)	$1,852,000	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
99	Trans Astronautica Corporation Top agencies USAF (Department of the Air Force)	$1,799,636	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	Arete Associates Top agencies USAF (Department of the Air Force)	$1,796,676	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.

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100 of 338 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC AR

Code	Net obligations	Largest contractor
AR11 Space R&D Services; Space Flight, Research and Supporting Activities; Basic Research	$2,054,124,840	The Boeing Company
AR12 Space R&D Services; Space Flight, Research and Supporting Activities; Applied Research	$1,695,002,381	Blue Origin Washington, LLC
AR13 Space R&D Services; Space Flight, Research and Supporting Activities; Experimental Development	$624,867,692	Northrop Grumman Corporation
AR21 R&D – Space: Science/Applications (Basic Research)	$515,245,395	Northrop Grumman Corporation

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 $10.1 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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

Who were the top 10 PSC AR contractors in FY2025?

1. California Institute of Technology ($2.35B), 2. The Boeing Company ($1.42B), 3. Northrop Grumman Corporation ($1.4B), 4. Blue Origin Washington, LLC ($830M), 5. Lockheed Martin Corporation ($727M), 6. Johns Hopkins University ($446M), 7. Association of Universities for Research In Astronomy, Inc. ($306M), 8. Bechtel Corp ($273M), 9. Space Exploration Technologies Corp. ($248M), 10. York Space Systems LLC ($154M).

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