Top 100 Contractors in PSC A: Research and Development, FY2025

Name: Top 100 Contractors in PSC A: Research and Development, FY2025
Creator: GovTribe

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

The top 10 won 43% of FY2025 PSC A contract dollars

Contract obligations: $71,102,420,008 Net of deobligations, by contracts coded PSC A or a code under it
Contractors: 4,876 Parent companies with an obligation
Largest contractor: Lockheed Martin Corporation $7.86 billion, 10.5% 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	Lockheed Martin Corporation 36 awardees Top agencies Navy (Department of the Navy) MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$7,858,275,685	10.5%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Northrop Grumman Corporation 49 awardees, including Northrop Grumman Systems Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$4,903,516,161	6.6%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	Lawrence Livermore National Security, LLC Top agencies DOE (Department of Energy) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$3,625,335,964	4.9%	Rank history: #3 in FY2021, #3 in FY2022, #5 in FY2023 and #5 in FY2024; up 2 since FY2024.
4	Advanced Technology International Top agencies Army (Department of the Army) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$3,096,829,491	4.1%	Rank history: #56 in FY2021, not on the FY2022–FY2023 lists and #3 in FY2024; down 1 since FY2024.
5	RTX Corporation 40 awardees, including Raytheon Company, RTX BBN Technologies, Inc. and Rockwell Collins, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$2,520,643,255	3.4%	Rank history: #6 in FY2021, #6 in FY2022, #4 in FY2023 and #6 in FY2024; up 1 since FY2024.
6	The Boeing Company 21 awardees, including Millennium Space Systems, Inc. and HRL Laboratories, LLC Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) Navy (Department of the Navy)	$2,490,338,720	3.3%	Rank history: #5 in FY2021, #5 in FY2022, #7 in FY2023 and #4 in FY2024; down 2 since FY2024.
7	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)	$2,385,374,349	3.2%	Rank history: #4 in FY2021, #4 in FY2022, #6 in FY2023 and #7 in FY2024; unchanged since FY2024.
8	Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) OSD (Office of the Secretary of Defense)	$1,995,122,163	2.7%	Rank history: not on the FY2021–FY2024 lists; new.
9	Massachusetts Institute of Technology Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$1,443,735,054	1.9%	Rank history: #10 in FY2021, #9 in FY2022, #11 in FY2023 and #9 in FY2024; unchanged since FY2024.
10	National Security Technology Accelerator Inc. Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) OSD (Office of the Secretary of Defense)	$1,409,609,516	1.9%	Rank history: #26 in FY2021, #20 in FY2022, #13 in FY2023 and #14 in FY2024; up 4 since FY2024.
11	Leidos Holdings, Inc. 14 awardees, including Leidos Biomedical Research Inc., Leidos, Inc. and Kudu Dynamics LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,244,815,984	1.7%	Rank history: #8 in FY2021, #10 in FY2022, #10 in FY2023 and #11 in FY2024; unchanged since FY2024.
12	Booz Allen Hamilton Holding Corporation 5 awardees, including Booz Allen Hamilton Inc., Everwatch Solutions Inc. and Ultra Electronics Advanced Tactical Systems Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$1,183,649,316	1.6%	Rank history: #14 in FY2021, #12 in FY2022, #15 in FY2023 and #12 in FY2024; unchanged since FY2024.
13	Textron Inc. 3 awardees, including Bell Textron Inc. and Textron Systems Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,164,346,915	1.6%	Rank history: #34 in FY2021, #38 in FY2022, #17 in FY2023 and #15 in FY2024; up 2 since FY2024.
14	The Mitre Corporation 2 awardees Top agencies AAFES (Department of Defense Army and Air Force Exchange Service) Army (Department of the Army) Navy (Department of the Navy)	$977,545,043	1.3%	Rank history: #7 in FY2021, #7 in FY2022, #9 in FY2023 and #13 in FY2024; down 1 since FY2024.
15	L3Harris Technologies, Inc. 33 awardees, including Aerojet Rocketdyne of DE, Inc., L3 Technologies, Inc. and L3Harris Technologies Integrated Systems L.P. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Commerce (Department of Commerce)	$901,651,901	1.2%	Rank history: #22 in FY2021, #16 in FY2022, #24 in FY2023 and #17 in FY2024; up 2 since FY2024.
16	BAE Systems 13 awardees, including BAE Systems Land and Armaments L.P., BAE Systems Information & Electronic Systems Integration Inc. and BAE Systems Technology Solutions & Services Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$860,432,727	1.2%	Rank history: #13 in FY2021, #19 in FY2022, #20 in FY2023 and #20 in FY2024; up 4 since FY2024.
17	KBR Wyle Services LLC 8 awardees, including Dependable Global Solutions, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$843,602,378	1.1%	Rank history: not on the FY2021–FY2023 lists and #22 in FY2024; up 5 since FY2024.
18	Blue Origin Washington, LLC Top agencies NASA (National Aeronautics and Space Administration)	$829,560,675	1.1%	Rank history: not on the FY2021–FY2022 lists, #27 in FY2023 and #23 in FY2024; up 5 since FY2024.
19	Science Applications International Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$818,625,681	1.1%	Rank history: #12 in FY2021, #13 in FY2022, #14 in FY2023 and #16 in FY2024; down 3 since FY2024.
20	General Dynamics Corporation 28 awardees, including General Dynamics Mission Systems, Inc., General Dynamics Land Systems Inc. and General Dynamics Information Technology, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$800,439,781	1.1%	Rank history: #19 in FY2021, #25 in FY2022, #26 in FY2023 and #25 in FY2024; up 5 since FY2024.
21	Huntington Ingalls Industries, Inc. 5 awardees, including HII Mission Technologies Corp, HII Unmanned Systems, Inc. and HII Technical Solutions Corporation Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$645,261,362	0.9%	Rank history: not on the FY2021 list, #23 in FY2022, not on the FY2023 list and #19 in FY2024; down 2 since FY2024.
22	Amentum Holdings, Inc. 13 awardees, including Amentum Technology, Inc., Amentum Services, Inc. and The Keyw Corporation Top agencies MDA (DOD Missile Defense Agency) Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$619,293,199	0.8%	Rank history: not on the FY2021–FY2024 lists; up 181 since FY2024.
23	CACI International Inc. 6 awardees, including Caci, Inc. - Federal, Caci Technologies, LLC and LGS Innovations LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$590,489,029	0.8%	Rank history: #39 in FY2021, #40 in FY2022, #28 in FY2023 and #32 in FY2024; up 9 since FY2024.
24	Georgia TECH Applied Research Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$441,921,834	0.6%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2024; up 6 since FY2024.
25	Space Exploration Technologies Corp. 2 awardees Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$430,900,770	0.6%	Rank history: #17 in FY2021, #11 in FY2022, #12 in FY2023 and #18 in FY2024; down 7 since FY2024.
26	Mantech Tsg-2 Joint Venture Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense) DOD (Department of Defense)	$372,295,645	0.5%	Rank history: #30 in FY2021, #33 in FY2022, #39 in FY2023 and #24 in FY2024; down 2 since FY2024.
27	Sierra Nevada Company, LLC 4 awardees, including Sierra Space Corp and Kutta Technologies, LLC Top agencies USAF (Department of the Air Force) USSOCOM (United States Special Operations Command) Army (Department of the Army)	$366,601,902	0.5%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2024; up 4 since FY2024.
28	General Electric Company 8 awardees, including GE Energy Power Conversion Naval Systems Inc., Innoveering LLC and GE Aviation Systems LLC Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration) Army (Department of the Army)	$348,850,338	0.5%	Rank history: #29 in FY2021, #30 in FY2022, #29 in FY2023 and #21 in FY2024; down 7 since FY2024.
29	BAE Systems Space & Mission Systems Inc. Top agencies USAF (Department of the Air Force) Commerce (Department of Commerce) NASA (National Aeronautics and Space Administration)	$339,984,169	0.5%	Rank history: not on the FY2021–FY2024 lists; up 152 since FY2024.
30	The Pennsylvania State University Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) NASA (National Aeronautics and Space Administration)	$329,371,818	0.4%	Rank history: #36 in FY2021, #31 in FY2022, #36 in FY2023 and #34 in FY2024; up 4 since FY2024.
31	Association of Universities for Research In Astronomy, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$309,762,519	0.4%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; up 11 since FY2024.
32	Battelle Memorial Institute 2 awardees Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$306,980,086	0.4%	Rank history: #31 in FY2021, #21 in FY2022, #22 in FY2023 and #29 in FY2024; down 3 since FY2024.
33	Torch Technologies Inc. 2 awardees Top agencies Army (Department of the Army) MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$305,179,901	0.4%	Rank history: #54 in FY2021, #24 in FY2022, #34 in FY2023 and #38 in FY2024; up 5 since FY2024.
34	Battelle Savannah River Alliance, LLC Top agencies DOE (Department of Energy)	$302,244,892	0.4%	Rank history: #41 in FY2021, not on the FY2022–FY2023 lists and #39 in FY2024; up 5 since FY2024.
35	York Space Systems LLC Top agencies USAF (Department of the Air Force)	$285,133,338	0.4%	Rank history: not on the FY2021 list, #82 in FY2022, #43 in FY2023 and #26 in FY2024; down 9 since FY2024.
36	Bechtel Corp Through Bechtel National, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$272,595,908	0.4%	Rank history: #28 in FY2021, #26 in FY2022, #18 in FY2023 and #27 in FY2024; down 9 since FY2024.
37	Palantir Technologies Inc. Through Palantir USG Inc. Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army) MDA (DOD Missile Defense Agency)	$272,286,095	0.4%	Rank history: not on the FY2021–FY2023 lists and #73 in FY2024; up 36 since FY2024.
38	Modern Technology Solutions, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense) MDA (DOD Missile Defense Agency)	$257,252,469	0.3%	Rank history: #100 in FY2021, #57 in FY2022, #55 in FY2023 and #57 in FY2024; up 19 since FY2024.
39	Anduril Industries Inc. 3 awardees, including Exoanalytic Solutions Inc. Top agencies OSD (Office of the Secretary of Defense) USAF (Department of the Air Force) Navy (Department of the Navy)	$256,922,731	0.3%	Rank history: not on the FY2021–FY2023 lists and #64 in FY2024; up 25 since FY2024.
40	DCS Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$251,475,675	0.3%	Rank history: #55 in FY2021, #76 in FY2022, #64 in FY2023 and #45 in FY2024; up 5 since FY2024.
41	Institute for Defense Analyses Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army) Navy (Department of the Navy)	$240,208,929	0.3%	Rank history: not on the FY2021–FY2024 lists; up 100 since FY2024.
42	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency) USAF (Department of the Air Force) Army (Department of the Army)	$234,556,556	0.3%	Rank history: #37 in FY2021, #34 in FY2022, #37 in FY2023 and #40 in FY2024; down 2 since FY2024.
43	Medical Technology Enterprise Consortium Top agencies DHA (Defense Health Agency) Army (Department of the Army) Navy (Department of the Navy)	$214,368,069	0.3%	Rank history: #33 in FY2021, #49 in FY2022, #42 in FY2023 and #37 in FY2024; down 6 since FY2024.
44	University of Dayton Top agencies USAF (Department of the Air Force) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$210,835,297	0.3%	Rank history: #78 in FY2021, #84 in FY2022, #70 in FY2023 and #54 in FY2024; up 10 since FY2024.
45	Southwest Research Institute Top agencies NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency) Commerce (Department of Commerce)	$210,700,852	0.3%	Rank history: #53 in FY2021, #48 in FY2022, #47 in FY2023 and #46 in FY2024; up 1 since FY2024.
46	X-Bow Launch Systems Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$189,623,257	0.3%	Rank history: not on the FY2021–FY2024 lists; up 414 since FY2024.
47	University of Maryland, College Park Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$178,966,407	0.2%	Rank history: not on the FY2021–FY2023 lists and #100 in FY2024; up 53 since FY2024.
48	Parsons Corporation 5 awardees, including Parsons Government Services Inc., Space Ground System Solutions, Inc. and Chesapeake Technology International, Corp. Top agencies Navy (Department of the Navy) Army (Department of the Army) USAF (Department of the Air Force)	$175,214,974	0.2%	Rank history: #25 in FY2021, #22 in FY2022, #41 in FY2023 and #70 in FY2024; up 22 since FY2024.
49	Deloitte Through Deloitte Consulting LLP Top agencies WHS (DOD Washington Headquarters Service) HHS (Department of Health and Human Services) USAF (Department of the Air Force)	$175,121,263	0.2%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2024; up 19 since FY2024.
50	The Aerospace Corporation Top agencies NASA (National Aeronautics and Space Administration) DOE (Department of Energy) Commerce (Department of Commerce)	$157,953,531	0.2%	Rank history: #63 in FY2021, #65 in FY2022, #59 in FY2023 and #51 in FY2024; up 1 since FY2024.
51	Arctic Slope Regional Corporation 9 awardees, including Asrc Federal System Solutions LLC, Asrc Federal Advanced Research, LLC and Analytical Services, Inc. Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$157,270,801	0.2%	Rank history: #75 in FY2021, #70 in FY2022, #76 in FY2023 and #66 in FY2024; up 15 since FY2024.
52	Aerovironment, Inc. 3 awardees, including Bluehalo, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) Navy (Department of the Navy)	$152,854,874	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
53	University of Texas At Austin Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) Army (Department of the Army)	$137,996,284	0.2%	Rank history: not on the FY2021–FY2024 lists; up 74 since FY2024.
54	Assurance Technology Corp Top agencies Navy (Department of the Navy) Commerce (Department of Commerce)	$136,951,683	0.2%	Rank history: #94 in FY2021, #80 in FY2022, #73 in FY2023 and not on the FY2024 list; up 54 since FY2024.
55	Intuitive Research and Technology Corporation Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$134,950,207	0.2%	Rank history: not on the FY2021–FY2024 lists; up 122 since FY2024.
56	Systems & Technology Research LLC Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$133,623,666	0.2%	Rank history: #47 in FY2021, #62 in FY2022, #56 in FY2023 and #62 in FY2024; up 6 since FY2024.
57	Carnegie Mellon University Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$133,254,390	0.2%	Rank history: #43 in FY2021, #42 in FY2022, #51 in FY2023 and #41 in FY2024; down 16 since FY2024.
58	The National Advanced Mobility Consortium, Inc. Top agencies Army (Department of the Army)	$131,539,705	0.2%	Rank history: #69 in FY2021, #68 in FY2022, #38 in FY2023 and #87 in FY2024; up 29 since FY2024.
59	Intrepid LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$125,631,047	0.2%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2024; up 8 since FY2024.
60	Consortium Management Group, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DSCA (Defense Security Cooperation Agency)	$124,154,303	0.2%	Rank history: not on the FY2021–FY2024 lists; up 118 since FY2024.
61	General Atomics Aeronautical Systems, Inc. Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) USSOCOM (United States Special Operations Command)	$123,944,737	0.2%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2024; up 33 since FY2024.
62	Rocket Lab National Security LLC Top agencies USAF (Department of the Air Force)	$123,650,352	0.2%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; down 6 since FY2024.
63	Peraton Inc. Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$123,441,991	0.2%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2024; up 14 since FY2024.
64	Radiance Technologies, Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency)	$122,164,253	0.2%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2024; down 1 since FY2024.
65	Joint Technical Solutions, LLC Top agencies Army (Department of the Army)	$121,612,455	0.2%	Rank history: not on the FY2021–FY2024 lists; up 58 since FY2024.
66	Bluestaq LLC Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$121,380,590	0.2%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; down 16 since FY2024.
67	Linquest Corporation Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) Army (Department of the Army)	$121,082,882	0.2%	Rank history: #99 in FY2021, #72 in FY2022, #53 in FY2023 and #58 in FY2024; down 9 since FY2024.
68	Innovative Defense Technologies LLC Top agencies Navy (Department of the Navy) MDA (DOD Missile Defense Agency) OSD (Office of the Secretary of Defense)	$116,079,911	0.2%	Rank history: not on the FY2021–FY2023 lists and #86 in FY2024; up 18 since FY2024.
69	Utah State University Space Dynamics Laboratory Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency) Navy (Department of the Navy)	$115,060,850	0.2%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2024; up 13 since FY2024.
70	American Systems Corporation Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$114,943,419	0.2%	Rank history: not on the FY2021 list, #93 in FY2022, #77 in FY2023 and #59 in FY2024; down 11 since FY2024.
71	Qinetiq Inc. Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$114,621,270	0.2%	Rank history: not on the FY2021–FY2024 lists; up 34 since FY2024.
72	The Regents of the University of California 2 awardees Top agencies NASA (National Aeronautics and Space Administration) DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army)	$113,662,819	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
73	Bwxt Advanced Technologies LLC Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$107,976,022	0.1%	Rank history: not on the FY2021–FY2024 lists; up 65 since FY2024.
74	Trax International Corporation Top agencies Army (Department of the Army)	$106,938,993	0.1%	Rank history: #59 in FY2021, #66 in FY2022, #74 in FY2023 and #76 in FY2024; up 2 since FY2024.
75	Start2 Group, Inc. Top agencies HHS (Department of Health and Human Services)	$105,217,536	0.1%	Rank history: not on the FY2021–FY2024 lists; up 146 since FY2024.
76	Science Systems and Applications, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$105,205,743	0.1%	Rank history: #67 in FY2021, #69 in FY2022, #69 in FY2023 and #71 in FY2024; down 5 since FY2024.
77	Firefly Aerospace Inc. Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force)	$99,120,455	0.1%	Rank history: not on the FY2021–FY2024 lists; up 105 since FY2024.
78	University of Washington Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration) HHS (Department of Health and Human Services)	$98,667,511	0.1%	Rank history: not on the FY2021–FY2024 lists; up 37 since FY2024.
79	Emergent Biosolutions Inc. Through Emergent Product Development Gaithersburg Inc. Top agencies HHS (Department of Health and Human Services)	$96,674,751	0.1%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2024; down 26 since FY2024.
80	Raytheon Company Top agencies USAF (Department of the Air Force)	$95,300,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2024; down 44 since FY2024.
81	Technology Service Corp Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$94,692,012	0.1%	Rank history: not on the FY2021–FY2024 lists; up 75 since FY2024.
82	American Electronic Warfare Associates Incorporated Top agencies Navy (Department of the Navy)	$93,488,766	0.1%	Rank history: not on the FY2021–FY2023 lists and #99 in FY2024; up 17 since FY2024.
83	Seacorp, LLC 2 awardees Top agencies Navy (Department of the Navy)	$93,257,424	0.1%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and #74 in FY2024; down 9 since FY2024.
84	Teledyne Technologies Incorporated 7 awardees, including Teledyne Brown Engineering, Inc., Teledyne Scientific & Imaging, LLC and Teledyne Flir Defense, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$92,888,805	0.1%	Rank history: #79 in FY2021, not on the FY2022 list, #99 in FY2023 and #60 in FY2024; down 24 since FY2024.
85	Smithsonian Institution Top agencies NASA (National Aeronautics and Space Administration)	$92,681,695	0.1%	Rank history: not on the FY2021–FY2024 lists; up 18 since FY2024.
86	Amgen USA Inc Top agencies HHS (Department of Health and Human Services)	$89,932,937	0.1%	Rank history: not on the FY2021–FY2023 lists and #61 in FY2024; down 25 since FY2024.
87	ICR Inc Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) Navy (Department of the Navy)	$89,793,075	0.1%	Rank history: not on the FY2021–FY2022 lists, #96 in FY2023 and not on the FY2024 list; up 23 since FY2024.
88	The Regents of the University of Colorado Top agencies NASA (National Aeronautics and Space Administration) USAF (Department of the Air Force) Army (Department of the Army)	$88,971,985	0.1%	Rank history: #62 in FY2021, #74 in FY2022, #98 in FY2023 and not on the FY2024 list; up 16 since FY2024.
89	Wildstar LLC Top agencies USAF (Department of the Air Force)	$85,554,224	0.1%	Rank history: not on the FY2021–FY2024 lists; up 327 since FY2024.
90	Sri International Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) DLA (Defense Logistics Agency)	$85,471,929	0.1%	Rank history: #50 in FY2021, #50 in FY2022, #61 in FY2023 and #80 in FY2024; down 10 since FY2024.
91	Tecolote Research, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$84,541,443	0.1%	Rank history: not on the FY2021–FY2024 lists; up 95 since FY2024.
92	Adnet Systems Inc. Top agencies NASA (National Aeronautics and Space Administration)	$84,323,564	0.1%	Rank history: not on the FY2021–FY2024 lists; up 27 since FY2024.
93	Diazyme Laboratories Inc. 2 awardees, including General Atomics Top agencies DOE (Department of Energy) USAF (Department of the Air Force) Navy (Department of the Navy)	$83,143,576	0.1%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2024; down 12 since FY2024.
94	Jetzero, Inc. Top agencies USAF (Department of the Air Force) NASA (National Aeronautics and Space Administration)	$82,652,061	0.1%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2024; down 15 since FY2024.
95	Scitec Innovations LLC Top agencies USAF (Department of the Air Force) MDA (DOD Missile Defense Agency)	$82,482,478	0.1%	Rank history: not on the FY2021–FY2023 lists and #83 in FY2024; down 12 since FY2024.
96	Westat, Inc. 2 awardees Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) DOT (Department of Transportation)	$80,882,565	0.1%	Rank history: #57 in FY2021, #51 in FY2022, #89 in FY2023 and #78 in FY2024; down 18 since FY2024.
97	Seqirus Inc. Top agencies HHS (Department of Health and Human Services)	$78,527,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2024; down 62 since FY2024.
98	Mag DS Corp Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$76,784,001	0.1%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2024; down 33 since FY2024.
99	University of Arizona Top agencies NASA (National Aeronautics and Space Administration) Army (Department of the Army) Navy (Department of the Navy)	$76,138,474	0.1%	Rank history: not on the FY2021–FY2024 lists; up 192 since FY2024.
100	The Charles Stark Draper Laboratory, Inc. Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$75,397,703	0.1%	Rank history: #80 in FY2021, #78 in FY2022, not on the FY2023 list and #89 in FY2024; down 11 since FY2024.

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100 of 4,876 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC A

Code	Net obligations	Largest contractor
AC National Defense R&D Services	$47,276,765,922	Lockheed Martin Corporation
AR Space R&D Services	$9,809,851,562	California Institute of Technology
AJ General Science and Technology R&D Services	$5,406,568,881	Battelle Savannah River Alliance, LLC
AZ Other Research/Development	$3,833,722,409	Lawrence Livermore National Security, LLC
AN Health R&D Services	$2,989,800,107	Leidos Holdings, Inc.
AD Defense (Other) R&D	$941,551,022	Science Applications International Corporation
AS Transportation R&D Services	$272,854,793	General Electric Company
AH Natural Resources and Environment R&D Services	$154,973,309	RTX Corporation
AG Energy R&D Services	$147,300,238	Bwxt Advanced Technologies LLC
AB Community and Regional Development R&D Services	$134,291,855	L3Harris Technologies, Inc.
AF Education, Training, Employment, and Social Services R&D Services	$66,107,185	Family Health International
AA Agriculture R&D Services	$33,200,898	Chemonics International, Inc.

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 $74.6 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 A contractors in FY2025?

1. Lockheed Martin Corporation ($7.86B), 2. Northrop Grumman Corporation ($4.9B), 3. Lawrence Livermore National Security, LLC ($3.63B), 4. Advanced Technology International ($3.1B), 5. RTX Corporation ($2.52B), 6. The Boeing Company ($2.49B), 7. California Institute of Technology ($2.39B), 8. Johns Hopkins University ($2B), 9. Massachusetts Institute of Technology ($1.44B), 10. National Security Technology Accelerator Inc. ($1.41B).

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