Top 100 Contractors in PSC AD: Defense (Other) R&D, FY2024

Name: Top 100 Contractors in PSC AD: Defense (Other) R&D, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 67% of FY2024 PSC AD contract dollars

Contract obligations: $2,406,184,039 Net of deobligations, by contracts coded PSC AD or a code under it
Contractors: 273 Parent companies with an obligation
Largest contractor: Science Applications International Corporation $334 million, 12.9% 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	Science Applications International Corporation 5 awardees Top agencies Army (Department of the Army) USAF (Department of the Air Force) Navy (Department of the Navy)	$334,273,201	12.9%	Rank history: #2 in FY2021, #2 in FY2022, #1 in FY2023 and #1 in FY2025; unchanged since FY2023.
2	The Boeing Company 7 awardees Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$332,283,513	12.8%	Rank history: #29 in FY2021, #32 in FY2022, #67 in FY2023 and #42 in FY2025; up 65 since FY2023.
3	Seqirus Inc. Top agencies HHS (Department of Health and Human Services)	$311,476,310	12.0%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2025; new.
4	Lockheed Martin Corporation 18 awardees, including Lockheed Martin Services, LLC and Sikorsky Aircraft Corporation Top agencies USAF (Department of the Air Force) DOT (Department of Transportation) DARPA (Defense Advanced Research Projects Agency)	$217,752,127	8.4%	Rank history: #1 in FY2021, #1 in FY2022, #3 in FY2023 and #2 in FY2025; down 1 since FY2023.
5	Northrop Grumman Corporation 21 awardees, including Alliant Techsystems Operations LLC and Northrop Grumman Systems Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$137,061,417	5.3%	Rank history: #10 in FY2021, #23 in FY2022, #17 in FY2023 and #17 in FY2025; up 12 since FY2023.
6	Leidos Holdings, Inc. 8 awardees, including Leidos, Inc. and Dynetics Technical Solutions Inc. Top agencies DOT (Department of Transportation) DTRA (Defense Threat Reduction Agency) DARPA (Defense Advanced Research Projects Agency)	$92,962,677	3.6%	Rank history: #5 in FY2021, #4 in FY2022, #5 in FY2023 and #3 in FY2025; down 1 since FY2023.
7	The National Advanced Mobility Consortium, Inc. Top agencies Army (Department of the Army)	$82,200,020	3.2%	Rank history: #14 in FY2021, #11 in FY2022, #2 in FY2023 and #6 in FY2025; down 5 since FY2023.
8	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$79,142,573	3.1%	Rank history: #11 in FY2021, #12 in FY2022, #10 in FY2023 and #5 in FY2025; up 2 since FY2023.
9	Radiance Technologies, Inc. 2 awardees Top agencies Army (Department of the Army) WHS (DOD Washington Headquarters Service) USAF (Department of the Air Force)	$78,983,553	3.0%	Rank history: #9 in FY2021, #9 in FY2022, #9 in FY2023 and #12 in FY2025; unchanged since FY2023.
10	The Aerospace Corporation Top agencies NASA (National Aeronautics and Space Administration)	$63,601,677	2.5%	Rank history: #20 in FY2021, #19 in FY2022, #12 in FY2023 and #8 in FY2025; up 2 since FY2023.
11	Skywater Technology Foundry Inc. Top agencies Army (Department of the Army)	$62,202,320	2.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
12	Advanced Technology International Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$50,038,250	1.9%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
13	RTX Corporation 26 awardees, including Raytheon Company, RTX BBN Technologies, Inc. and Hamilton Sundstrand Corporation Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$41,469,445	1.6%	Rank history: #4 in FY2021, #6 in FY2022, #6 in FY2023 and #10 in FY2025; down 7 since FY2023.
14	Intrepid LLC Top agencies Army (Department of the Army)	$40,621,464	1.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
15	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies OSD (Office of the Secretary of Defense) DOT (Department of Transportation) DOS (Department of State)	$28,818,604	1.1%	Rank history: #55 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
16	National Security Technology Accelerator Inc. Top agencies WHS (DOD Washington Headquarters Service) Navy (Department of the Navy)	$27,048,532	1.0%	Rank history: #6 in FY2021, #7 in FY2022, #16 in FY2023 and #19 in FY2025; unchanged since FY2023.
17	General Dynamics Corporation 7 awardees, including Applied Physical Sciences Corp, Electric Boat Corporation and General Dynamics Mission Systems, Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$26,378,559	1.0%	Rank history: #19 in FY2021, #14 in FY2022, #14 in FY2023 and #20 in FY2025; down 3 since FY2023.
18	Accelint Intelligent Systems, LLC Top agencies Army (Department of the Army)	$24,372,076	0.9%	Rank history: not on the FY2021 list, #79 in FY2022, #88 in FY2023 and #13 in FY2025; up 70 since FY2023.
19	KBR Wyle Services LLC 3 awardees, including Dependable Global Solutions, LLC Top agencies DOE (Department of Energy)	$21,984,294	0.8%	Rank history: not on the FY2021–FY2023 lists and #11 in FY2025; new.
20	Kudu Dynamics LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$19,764,648	0.8%	Rank history: #51 in FY2021, #38 in FY2022, #76 in FY2023 and not on the FY2025 list; up 56 since FY2023.
21	University of Dayton Top agencies USAF (Department of the Air Force) Army (Department of the Army) OSD (Office of the Secretary of Defense)	$19,244,483	0.7%	Rank history: #34 in FY2021, #40 in FY2022, #24 in FY2023 and #18 in FY2025; up 3 since FY2023.
22	Analytic Services Inc. Through Advanced Technology International Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$16,427,047	0.6%	Rank history: #8 in FY2021, #8 in FY2022, #4 in FY2023 and not on the FY2025 list; down 18 since FY2023.
23	Systems & Technology Research LLC Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$12,541,801	0.5%	Rank history: #25 in FY2021, #29 in FY2022, #28 in FY2023 and #29 in FY2025; up 5 since FY2023.
24	Tactical Engineering & Analysis, Inc. Top agencies Navy (Department of the Navy)	$12,167,339	0.5%	Rank history: #62 in FY2021, #67 in FY2022, #42 in FY2023 and #36 in FY2025; up 18 since FY2023.
25	L3Harris Technologies, Inc. 17 awardees, including Fisica Applied Technologies, Inc., L3Harris Technologies Integrated Systems L.P. and L3 Technologies, Inc. Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$12,105,800	0.5%	Rank history: #13 in FY2021, #15 in FY2022, #21 in FY2023 and #16 in FY2025; down 4 since FY2023.
26	Par Technology Corporation Through Par Government Systems Corporation Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) WHS (DOD Washington Headquarters Service)	$11,561,352	0.4%	Rank history: #63 in FY2021, #57 in FY2022, #52 in FY2023 and #37 in FY2025; up 26 since FY2023.
27	Asgn Incorporated Through ECS Federal, LLC Top agencies OSD (Office of the Secretary of Defense)	$10,176,647	0.4%	Rank history: not on the FY2021–FY2023 lists and #47 in FY2025; new.
28	Booz Allen Hamilton Holding Corporation 3 awardees, including Booz Allen Hamilton Inc. Top agencies Army (Department of the Army) DOT (Department of Transportation) Navy (Department of the Navy)	$9,973,236	0.4%	Rank history: #16 in FY2021, #18 in FY2022, #13 in FY2023 and #48 in FY2025; down 15 since FY2023.
29	Assured Information Security, Inc. Top agencies USAF (Department of the Air Force) DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$9,520,626	0.4%	Rank history: #31 in FY2021, #60 in FY2022, #33 in FY2023 and #26 in FY2025; up 4 since FY2023.
30	Apogee Research LLC Top agencies USAF (Department of the Air Force) WHS (DOD Washington Headquarters Service) DARPA (Defense Advanced Research Projects Agency)	$8,977,120	0.3%	Rank history: #71 in FY2021, #52 in FY2022, #34 in FY2023 and #51 in FY2025; up 4 since FY2023.
31	Scientific Research Corporation Top agencies Navy (Department of the Navy)	$8,927,308	0.3%	Rank history: #68 in FY2021, #62 in FY2022, #40 in FY2023 and #22 in FY2025; up 9 since FY2023.
32	Southwest Research Institute Top agencies DTRA (Defense Threat Reduction Agency)	$8,664,532	0.3%	Rank history: #50 in FY2021, #44 in FY2022, #26 in FY2023 and #74 in FY2025; down 6 since FY2023.
33	Sri International Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$8,474,249	0.3%	Rank history: #21 in FY2021, #31 in FY2022, #25 in FY2023 and #21 in FY2025; down 8 since FY2023.
34	DCS Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy) USAF (Department of the Air Force)	$8,341,156	0.3%	Rank history: #47 in FY2021, #53 in FY2022, #31 in FY2023 and #99 in FY2025; down 3 since FY2023.
35	Bluehalo, LLC Top agencies USAF (Department of the Air Force)	$8,032,275	0.3%	Rank history: #66 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
36	Mclaughlin Research Corporation Top agencies Navy (Department of the Navy)	$7,719,297	0.3%	Rank history: not on the FY2021 list, #88 in FY2022, #66 in FY2023 and not on the FY2025 list; up 30 since FY2023.
37	Two Six Labs, LLC Top agencies OSD (Office of the Secretary of Defense) WHS (DOD Washington Headquarters Service) DARPA (Defense Advanced Research Projects Agency)	$7,515,710	0.3%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2025; new.
38	Rite-Solutions, Inc. Top agencies Navy (Department of the Navy)	$6,934,886	0.3%	Rank history: #69 in FY2021, #47 in FY2022, #29 in FY2023 and not on the FY2025 list; down 9 since FY2023.
39	Peraton Labs Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army) USAF (Department of the Air Force)	$6,839,458	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	Teamstaff Inc. Through Dlh, LLC Top agencies Navy (Department of the Navy)	$6,827,941	0.3%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2025; up 222 since FY2023.
41	Blackhorse, A Parsons LLC Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force) Navy (Department of the Navy)	$6,174,418	0.2%	Rank history: #78 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
42	CNF Technologies Corp Top agencies USAF (Department of the Air Force)	$5,769,754	0.2%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and not on the FY2025 list; up 9 since FY2023.
43	Battelle Memorial Institute Top agencies Army (Department of the Army) Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$5,745,230	0.2%	Rank history: #59 in FY2021, #42 in FY2022, #45 in FY2023 and #43 in FY2025; up 2 since FY2023.
44	Nalej Corp Top agencies USAF (Department of the Air Force)	$5,612,761	0.2%	Rank history: not on the FY2021–FY2023 lists and #62 in FY2025; up 253 since FY2023.
45	Thomson Reuters Special Services LLC Top agencies DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$5,560,572	0.2%	Rank history: not on the FY2021 list, #65 in FY2022, #63 in FY2023 and not on the FY2025 list; up 18 since FY2023.
46	Cerebras Systems Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$5,467,099	0.2%	Rank history: #64 in FY2021, not on the FY2022 list, #55 in FY2023 and not on the FY2025 list; up 9 since FY2023.
47	Tecolote Research, Inc. Top agencies USAF (Department of the Air Force)	$5,348,786	0.2%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023 and #49 in FY2025; up 25 since FY2023.
48	American Systems Corporation Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$5,166,039	0.2%	Rank history: not on the FY2021 list, #80 in FY2022, #59 in FY2023 and #38 in FY2025; up 11 since FY2023.
49	Qinetiq Group PLC Through Qinetiq Inc. Top agencies Army (Department of the Army)	$4,783,043	0.2%	Rank history: #22 in FY2021, #13 in FY2022, #32 in FY2023 and not on the FY2025 list; down 17 since FY2023.
50	Torch Technologies Inc. Top agencies USAF (Department of the Air Force)	$4,724,739	0.2%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023 and #31 in FY2025; up 43 since FY2023.
51	Nalas Engineering Services Inc Top agencies Army (Department of the Army)	$4,400,970	0.2%	Rank history: not on the FY2021–FY2022 lists, #54 in FY2023 and #41 in FY2025; up 3 since FY2023.
52	Peraton Inc. Top agencies Navy (Department of the Navy)	$4,312,063	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	Sussex Rural Electric Cooperative Top agencies Army (Department of the Army)	$4,276,916	0.2%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2025; up 62 since FY2023.
54	A2 Labs, LLC Top agencies DARPA (Defense Advanced Research Projects Agency)	$4,239,417	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 67 since FY2023.
55	Parsons Government Services Inc. Top agencies DOT (Department of Transportation) WHS (DOD Washington Headquarters Service)	$4,194,863	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
56	MRIGLOBAL Top agencies DARPA (Defense Advanced Research Projects Agency)	$3,974,053	0.2%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and not on the FY2025 list; down 9 since FY2023.
57	Fortem Technologies Inc Top agencies Army (Department of the Army) DTRA (Defense Threat Reduction Agency)	$3,967,030	0.2%	Rank history: not on the FY2021–FY2022 lists, #75 in FY2023 and #28 in FY2025; up 18 since FY2023.
58	The George Mason University Instructional Foundation, Inc. Through George Mason University Top agencies Navy (Department of the Navy) OSD (Office of the Secretary of Defense)	$3,732,441	0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2025; new.
59	University of Southern California Top agencies DARPA (Defense Advanced Research Projects Agency)	$3,702,964	0.1%	Rank history: #100 in FY2021, #75 in FY2022, #61 in FY2023 and not on the FY2025 list; up 2 since FY2023.
60	Kitware Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$3,667,070	0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023 and #71 in FY2025; up 37 since FY2023.
61	Nexus Photonics, Inc. Top agencies WHS (DOD Washington Headquarters Service) DARPA (Defense Advanced Research Projects Agency)	$3,525,565	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 103 since FY2023.
62	Jacobs Engineering Group Inc. 2 awardees, including Amentum Technology, Inc. and The Keyw Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$3,365,223	0.1%	Rank history: #41 in FY2021, #48 in FY2022, #20 in FY2023 and not on the FY2025 list; down 42 since FY2023.
63	CACI International Inc. 6 awardees, including LGS Innovations LLC and Caci Technologies, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army) USCYBERCOM (Department of Defense Cyber Command)	$3,221,963	0.1%	Rank history: #28 in FY2021, #21 in FY2022, #18 in FY2023 and #35 in FY2025; down 45 since FY2023.
64	Jacobs Government Services Company 2 awardees, including Amentum Technology, Inc. and The Keyw Corporation Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$3,114,201	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
65	University of Montana Top agencies USAF (Department of the Air Force)	$3,097,822	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
66	The Johns Hopkins University Through The Johns Hopkins University Applied Physics Laboratory LLC Top agencies OSD (Office of the Secretary of Defense) DOT (Department of Transportation)	$3,050,500	0.1%	Rank history: #3 in FY2021, #5 in FY2022, #7 in FY2023 and not on the FY2025 list; down 59 since FY2023.
67	Kbr, Inc. 2 awardees, including Dependable Global Solutions, LLC Top agencies DOE (Department of Energy)	$2,835,022	0.1%	Rank history: #33 in FY2021, #61 in FY2022, #27 in FY2023 and not on the FY2025 list; down 40 since FY2023.
68	Serco-Ips Corporation Top agencies Navy (Department of the Navy)	$2,832,262	0.1%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
69	HRL Laboratories, LLC Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$2,360,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
70	Expedition Technology, LLC 2 awardees Top agencies OSD (Office of the Secretary of Defense) Navy (Department of the Navy)	$2,331,188	0.1%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; up 39 since FY2023.
71	Premier Technology, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$2,327,588	0.1%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and not on the FY2025 list; up 10 since FY2023.
72	Bowhead Professional Solutions LLC Top agencies Navy (Department of the Navy)	$2,227,182	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 50 since FY2023.
73	University of Pittsburgh - of the Commonwealth System of Higher Education Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,223,765	0.1%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; up 47 since FY2023.
74	BAE Systems PLC 14 awardees, including BAE Systems Information & Electronic Systems Integration Inc., BAE Systems Ordnance Systems Inc. and BAE Systems Land & Armaments L.P. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) Army (Department of the Army)	$2,213,178	0.1%	Rank history: #45 in FY2021, #27 in FY2022, #41 in FY2023 and #14 in FY2025; down 33 since FY2023.
75	Caci Technologies LLC 3 awardees, including LGS Innovations LLC Top agencies USAF (Department of the Air Force) DTRA (Defense Threat Reduction Agency)	$2,015,786	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Integration Innovation Inc. Top agencies OSD (Office of the Secretary of Defense)	$1,922,357	0.1%	Rank history: #23 in FY2021, #22 in FY2022, #44 in FY2023 and not on the FY2025 list; down 32 since FY2023.
77	The Charles Stark Draper Laboratory, Inc. Top agencies DTRA (Defense Threat Reduction Agency) Navy (Department of the Navy)	$1,905,489	0.1%	Rank history: #65 in FY2021, #68 in FY2022, #57 in FY2023 and not on the FY2025 list; down 20 since FY2023.
78	Next Tier Concepts Inc Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$1,895,696	0.1%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023 and #30 in FY2025; down 18 since FY2023.
79	Intel Federal LLC Top agencies USAF (Department of the Air Force)	$1,884,800	0.1%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2025; up 24 since FY2023.
80	Shield Ai Inc. Through Heron Systems, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,865,286	0.1%	Rank history: not on the FY2021 list, #54 in FY2022, not on the FY2023 list and not on the FY2025 list; up 38 since FY2023.
81	Red Wire Technologies LLC Top agencies DTRA (Defense Threat Reduction Agency)	$1,796,937	0.1%	Rank history: not on the FY2021–FY2023 lists and #53 in FY2025; new.
82	Arete Associates Top agencies Navy (Department of the Navy)	$1,793,216	0.1%	Rank history: not on the FY2021 list, #46 in FY2022, #48 in FY2023 and #54 in FY2025; down 34 since FY2023.
83	The Veritas Capital Fund VII L P Through Peraton Labs Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,752,350	0.1%	Rank history: not on the FY2021 list, #37 in FY2022, #35 in FY2023 and not on the FY2025 list; down 48 since FY2023.
84	The Pennsylvania State University Top agencies Navy (Department of the Navy) WHS (DOD Washington Headquarters Service)	$1,643,636	0.1%	Rank history: #12 in FY2021, #17 in FY2022, #15 in FY2023 and #57 in FY2025; down 69 since FY2023.
85	Synergene Therapeutics Inc Top agencies DTRA (Defense Threat Reduction Agency)	$1,573,584	0.1%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
86	Dynetics Technical Solutions Inc. Top agencies Army (Department of the Army)	$1,523,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
87	Mile Two LLC Top agencies USAF (Department of the Air Force)	$1,517,485	0.1%	Rank history: #72 in FY2021, #85 in FY2022, #86 in FY2023 and not on the FY2025 list; down 1 since FY2023.
88	Georgia TECH Research Corp 2 awardees Top agencies DARPA (Defense Advanced Research Projects Agency)	$1,490,305	0.1%	Rank history: #43 in FY2021, not on the FY2022 list, #71 in FY2023 and not on the FY2025 list; down 17 since FY2023.
89	ECS Federal, LLC Top agencies OSD (Office of the Secretary of Defense)	$1,453,799	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	Washington Metropolitan Area Transit Authority Top agencies DOT (Department of Transportation)	$1,322,966	0.1%	Rank history: not on the FY2021–FY2023 lists and #34 in FY2025; up 69 since FY2023.
91	Metron Incorporated Top agencies Navy (Department of the Navy)	$1,321,639	0.1%	Rank history: #54 in FY2021, #50 in FY2022, #46 in FY2023 and #89 in FY2025; down 45 since FY2023.
92	Spaceworks Enterprises Inc. Top agencies USAF (Department of the Air Force)	$1,174,110	<0.1%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2025; new.
93	Black River Systems Company, Inc. Top agencies USAF (Department of the Air Force) OSD (Office of the Secretary of Defense)	$1,163,000	<0.1%	Rank history: #39 in FY2021, #25 in FY2022, #37 in FY2023 and #50 in FY2025; down 56 since FY2023.
94	Serco Inc 2 awardees, including Serco-Ips Corporation Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,146,427	<0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023 and not on the FY2025 list; down 4 since FY2023.
95	Katmai Health Services LLC Top agencies Army (Department of the Army)	$1,136,201	<0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023 and not on the FY2025 list; down 10 since FY2023.
96	Qinetiq Inc. Top agencies USAF (Department of the Air Force)	$1,129,868	<0.1%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2025; new.
97	Advanced Core Concepts LLC Through Arctos Technology Solutions, LLC Top agencies USAF (Department of the Air Force)	$1,117,500	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 74 since FY2023.
98	Two Six Labs Holdings, Inc. Through Two Six Labs, LLC Top agencies WHS (DOD Washington Headquarters Service) DARPA (Defense Advanced Research Projects Agency)	$1,038,080	<0.1%	Rank history: #30 in FY2021, #20 in FY2022, #22 in FY2023 and not on the FY2025 list; down 76 since FY2023.
99	Carley Technologies Inc. Top agencies Navy (Department of the Navy)	$999,866	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 208 since FY2023.
100	Engineering and Software System Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$999,527	<0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.

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100 of 273 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC AD

Code	Net obligations	Largest contractor
AD93 R&D – Defense Other: Other (Advanced Development)	$873,208,173	The Boeing Company
AD92 R&D – Defense Other: Other (Applied Research/Exploratory Development)	$168,350,407	Leidos Holdings, 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 $2.59 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 AD contractors in FY2024?

1. Science Applications International Corporation ($334M), 2. The Boeing Company ($332M), 3. Seqirus Inc. ($311M), 4. Lockheed Martin Corporation ($218M), 5. Northrop Grumman Corporation ($137M), 6. Leidos Holdings, Inc. ($93M), 7. The National Advanced Mobility Consortium, Inc. ($82.2M), 8. Applied Research Associates, Inc. ($79.1M), 9. Radiance Technologies, Inc. ($79M), 10. The Aerospace Corporation ($63.6M).

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