Top 100 Contractors in NAICS 541714: Research and Development in Biotechnology (except Nanobiotechnology), FY2024

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Analytic Services Inc. Through Advanced Technology International Top agencies HHS (Department of Health and Human Services)	$1,108,725,799	28.1%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2023 and not on the FY2025 list; unchanged since FY2023.
2	Advanced Technology International Top agencies HHS (Department of Health and Human Services)	$706,312,304	17.9%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
3	The Boeing Company 2 awardees Top agencies MDA (DOD Missile Defense Agency)	$255,737,987	6.5%	Rank history: #1 in FY2021, #1 in FY2022, #5 in FY2023 and #6 in FY2025; up 2 since FY2023.
4	PPD Development LP 5 awardees, including Life Technologies Corporation and Fisher Scientific Company L.L.C. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$153,698,520	3.9%	Rank history: not on the FY2021–FY2023 lists and #87 in FY2025; up 151 since FY2023.
5	Amgen USA Inc Top agencies HHS (Department of Health and Human Services)	$129,850,668	3.3%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
6	Siga Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$112,552,320	2.8%	Rank history: #2 in FY2021, #17 in FY2022, #7 in FY2023 and #9 in FY2025; up 1 since FY2023.
7	L3Harris Technologies, Inc. Through L3 Technologies, Inc. Top agencies Navy (Department of the Navy)	$76,226,992	1.9%	Rank history: #3 in FY2021, not on the FY2022–FY2023 lists and #5 in FY2025; returned.
8	Emergent Biodefense Operations Lansing LLC Top agencies HHS (Department of Health and Human Services)	$67,400,672	1.7%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
9	Modex Therapeutics, Inc. Top agencies HHS (Department of Health and Human Services)	$51,049,267	1.3%	Rank history: not on the FY2021–FY2022 lists, #14 in FY2023 and not on the FY2025 list; up 5 since FY2023.
10	Emergent Biosolutions Inc. Through Emergent Product Development Gaithersburg Inc. Top agencies HHS (Department of Health and Human Services)	$41,914,904	1.1%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2025; new.
11	Technical Resources International, Inc. Top agencies HHS (Department of Health and Human Services)	$34,653,878	0.9%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023 and #19 in FY2025; down 7 since FY2023.
12	Start2 Group, Inc. Top agencies HHS (Department of Health and Human Services)	$32,864,208	0.8%	Rank history: not on the FY2021–FY2023 lists and #1 in FY2025; new.
13	Danaher Corporation 5 awardees, including Cepheid, AB Sciex LLC and Molecular Devices LLC Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture)	$32,209,176	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
14	Cerus Corporation Top agencies HHS (Department of Health and Human Services)	$32,121,522	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
15	Battelle Memorial Institute Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$31,313,000	0.8%	Rank history: #43 in FY2021, #38 in FY2022, #26 in FY2023 and #4 in FY2025; up 11 since FY2023.
16	Basilea Pharmaceutica AG Through Basilea Pharmaceutica International Ltd, Allschwil Top agencies HHS (Department of Health and Human Services)	$28,681,522	0.7%	Rank history: not on the FY2021–FY2023 lists and #7 in FY2025; new.
17	Vedanta Biosciences Inc. 2 awardees Top agencies HHS (Department of Health and Human Services)	$25,000,000	0.6%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; new.
18	Locus Biosciences Inc. Top agencies HHS (Department of Health and Human Services)	$23,887,628	0.6%	Rank history: not on the FY2021 list, #62 in FY2022, #56 in FY2023 and #14 in FY2025; up 38 since FY2023.
19	Pattern Bioscience, Inc. Top agencies HHS (Department of Health and Human Services)	$22,500,000	0.6%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
20	Trustees of Boston University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$22,043,272	0.6%	Rank history: not on the FY2021 list, #22 in FY2022, #12 in FY2023 and #11 in FY2025; down 8 since FY2023.
21	Seattle Children'S Hospital Top agencies HHS (Department of Health and Human Services)	$21,102,920	0.5%	Rank history: #20 in FY2021, #27 in FY2022, #28 in FY2023 and not on the FY2025 list; up 7 since FY2023.
22	Ossium Health Inc. Top agencies HHS (Department of Health and Human Services)	$21,043,426	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
23	4J Therapeutics Inc. Top agencies HHS (Department of Health and Human Services)	$20,597,670	0.5%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
24	Scandinavian Biopharma Holding AB Top agencies DHA (Defense Health Agency)	$20,479,340	0.5%	Rank history: not on the FY2021 list, #80 in FY2022, #76 in FY2023 and not on the FY2025 list; up 52 since FY2023.
25	Albert B. Sabin Vaccine Institute, Inc. (The) Top agencies HHS (Department of Health and Human Services)	$20,310,632	0.5%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
26	Sanofi Pasteur Inc. Through Sanofi Vaccines US Inc. Top agencies HHS (Department of Health and Human Services)	$19,875,769	0.5%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
27	The Leland Stanford Junior University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOE (Department of Energy)	$18,482,581	0.5%	Rank history: not on the FY2021 list, #67 in FY2022, #41 in FY2023 and #40 in FY2025; up 14 since FY2023.
28	Paratek Pharmaceuticals, Inc. Top agencies HHS (Department of Health and Human Services)	$18,279,236	0.5%	Rank history: #6 in FY2021, not on the FY2022 list, #18 in FY2023 and #72 in FY2025; down 10 since FY2023.
29	The Charles Stark Draper Laboratory, Inc. Top agencies HHS (Department of Health and Human Services) DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$18,180,709	0.5%	Rank history: #57 in FY2021, not on the FY2022 list, #19 in FY2023 and #64 in FY2025; down 10 since FY2023.
30	Duke University 2 awardees, including Duke University Health System, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$18,038,869	0.5%	Rank history: #33 in FY2021, #30 in FY2022, #36 in FY2023 and #57 in FY2025; up 6 since FY2023.
31	Eitr Biologics Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$17,464,310	0.4%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023 and not on the FY2025 list; up 14 since FY2023.
32	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies DHA (Defense Health Agency) USUHS (DOD Uniformed Services University of the Health Sciences)	$16,908,152	0.4%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; up 100 since FY2023.
33	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency) DARPA (Defense Advanced Research Projects Agency) Navy (Department of the Navy)	$16,801,698	0.4%	Rank history: not on the FY2021 list, #90 in FY2022, #35 in FY2023 and #17 in FY2025; up 2 since FY2023.
34	Abss Solutions Inc. Top agencies USAF (Department of the Air Force)	$16,466,817	0.4%	Rank history: #10 in FY2021, #14 in FY2022, not on the FY2023 list and #73 in FY2025; up 176 since FY2023.
35	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$15,258,929	0.4%	Rank history: #22 in FY2021, #37 in FY2022, #55 in FY2023 and #12 in FY2025; up 20 since FY2023.
36	President and Fellows of Harvard College 2 awardees Top agencies HHS (Department of Health and Human Services)	$13,731,168	0.3%	Rank history: not on the FY2021–FY2023 lists and #85 in FY2025; new.
37	Avian, LLC Top agencies Navy (Department of the Navy)	$12,720,031	0.3%	Rank history: not on the FY2021 list, #39 in FY2022, #40 in FY2023 and #34 in FY2025; up 3 since FY2023.
38	Spero Therapeutics, Inc. Top agencies HHS (Department of Health and Human Services)	$12,338,740	0.3%	Rank history: not on the FY2021 list, #34 in FY2022, not on the FY2023 list and #59 in FY2025; returned.
39	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies HHS (Department of Health and Human Services)	$12,168,025	0.3%	Rank history: #47 in FY2021, #36 in FY2022, #39 in FY2023 and #47 in FY2025; unchanged since FY2023.
40	RTX Corporation 2 awardees, including Raytheon Company and RTX BBN Technologies, Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$11,806,918	0.3%	Rank history: not on the FY2021–FY2023 lists and #35 in FY2025; new.
41	Psychogenics Inc. Top agencies HHS (Department of Health and Human Services)	$11,772,171	0.3%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; new.
42	Regents of the University of Michigan Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$11,651,173	0.3%	Rank history: not on the FY2021 list, #72 in FY2022, #68 in FY2023 and #61 in FY2025; up 26 since FY2023.
43	Chenega Professional & Technical Services LLC Top agencies DHA (Defense Health Agency)	$11,484,028	0.3%	Rank history: not on the FY2021 list, #52 in FY2022, #43 in FY2023 and #38 in FY2025; unchanged since FY2023.
44	SNA International LLC Top agencies DHA (Defense Health Agency)	$10,475,843	0.3%	Rank history: not on the FY2021–FY2023 lists and #20 in FY2025; new.
45	Goldbelt Frontier, LLC Top agencies Army (Department of the Army) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$10,379,965	0.3%	Rank history: #65 in FY2021, #69 in FY2022, #64 in FY2023 and not on the FY2025 list; up 19 since FY2023.
46	Vaxart Biosciences Inc. Top agencies HHS (Department of Health and Human Services)	$9,271,193	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
47	Revvity Health Sciences, Inc. Top agencies HHS (Department of Health and Human Services)	$9,263,365	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
48	New York Genome Center, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$9,039,172	0.2%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #44 in FY2025; up 3 since FY2023.
49	University of Hawaii Top agencies DARPA (Defense Advanced Research Projects Agency)	$8,842,578	0.2%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2025; new.
50	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies DHA (Defense Health Agency) DARPA (Defense Advanced Research Projects Agency)	$8,556,029	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
51	RHO Inc. Through Rho Federal Systems Division Inc. Top agencies HHS (Department of Health and Human Services)	$8,300,000	0.2%	Rank history: not on the FY2021 list, #54 in FY2022, #60 in FY2023 and not on the FY2025 list; up 9 since FY2023.
52	Alpha Genesis Inc. Top agencies HHS (Department of Health and Human Services)	$8,268,212	0.2%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2025; new.
53	Biofactura Inc. Top agencies HHS (Department of Health and Human Services)	$7,786,261	0.2%	Rank history: #19 in FY2021, #29 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
54	Personalis, Inc. Top agencies VA (Department of Veterans Affairs)	$7,499,600	0.2%	Rank history: not on the FY2021 list, #45 in FY2022, #57 in FY2023 and #32 in FY2025; up 3 since FY2023.
55	Public Health Vaccines LLC Top agencies HHS (Department of Health and Human Services)	$7,490,707	0.2%	Rank history: #24 in FY2021, not on the FY2022 list, #73 in FY2023 and #23 in FY2025; up 18 since FY2023.
56	The Broad Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$7,405,200	0.2%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and #53 in FY2025; down 12 since FY2023.
57	GE Medical Systems Information Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$7,242,122	0.2%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023 and #15 in FY2025; down 34 since FY2023.
58	Venatorx Pharmaceuticals Inc. Top agencies HHS (Department of Health and Human Services)	$7,000,000	0.2%	Rank history: #14 in FY2021, #6 in FY2022, #22 in FY2023 and not on the FY2025 list; down 36 since FY2023.
59	Allucent Government Services (Us) LLC Top agencies HHS (Department of Health and Human Services)	$6,616,957	0.2%	Rank history: #5 in FY2021, not on the FY2022 list, #3 in FY2023 and not on the FY2025 list; down 56 since FY2023.
60	Rutgers, the State University Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$6,585,213	0.2%	Rank history: #55 in FY2021, #50 in FY2022, #87 in FY2023 and #89 in FY2025; up 27 since FY2023.
61	General Electric Company 2 awardees, including GE Energy Power Conversion Naval Systems Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency)	$6,102,054	0.2%	Rank history: #27 in FY2021, #41 in FY2022, #37 in FY2023 and #39 in FY2025; down 24 since FY2023.
62	Icon Government and Public Health Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$6,087,730	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
63	La Jolla Institute for Immunology Top agencies HHS (Department of Health and Human Services)	$5,983,184	0.2%	Rank history: #62 in FY2021, #77 in FY2022, not on the FY2023 list and #69 in FY2025; up 40 since FY2023.
64	Fisher Bioservices Inc. Top agencies HHS (Department of Health and Human Services)	$5,851,184	0.1%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; new.
65	Northwestern University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$5,718,332	0.1%	Rank history: not on the FY2021 list, #61 in FY2022, #69 in FY2023 and #77 in FY2025; up 4 since FY2023.
66	Kentucky Science & Technology Corp Through STI Legacy, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$5,665,114	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 49 since FY2023.
67	Melinta Therapeutics, LLC Top agencies HHS (Department of Health and Human Services)	$5,662,702	0.1%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023 and #18 in FY2025; down 38 since FY2023.
68	Innovative Defense Technologies LLC Top agencies Navy (Department of the Navy)	$5,397,500	0.1%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2025; new.
69	The Bionetics Corporation Top agencies HHS (Department of Health and Human Services)	$5,196,419	0.1%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2025; up 45 since FY2023.
70	AD Astra Diagnostics, Inc. Top agencies HHS (Department of Health and Human Services)	$5,000,000	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
71	Enalare Therapeutics Inc. Top agencies HHS (Department of Health and Human Services)	$4,974,417	0.1%	Rank history: not on the FY2021 list, #64 in FY2022, not on the FY2023 list and not on the FY2025 list; up 163 since FY2023.
72	General Dynamics Corporation 2 awardees, including Applied Physical Sciences Corp and General Dynamics Information Technology, Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$4,952,408	0.1%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and #63 in FY2025; down 24 since FY2023.
73	Anivive Lifesciences Inc. Top agencies HHS (Department of Health and Human Services)	$4,889,710	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
74	The Veritas Capital Fund VII L P Through Peraton Labs Inc. Top agencies DARPA (Defense Advanced Research Projects Agency)	$4,885,312	0.1%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023 and not on the FY2025 list; up 5 since FY2023.
75	Crestone, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$4,694,612	0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #95 in FY2023 and #81 in FY2025; up 20 since FY2023.
76	Johnson & Johnson Through Janssen Research & Development, LLC Top agencies HHS (Department of Health and Human Services)	$4,693,978	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
77	Sri International Top agencies HHS (Department of Health and Human Services)	$4,634,832	0.1%	Rank history: #39 in FY2021, #42 in FY2022, #32 in FY2023 and not on the FY2025 list; down 45 since FY2023.
78	Priority One Services, Inc. Top agencies HHS (Department of Health and Human Services)	$4,590,451	0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #80 in FY2025; up 16 since FY2023.
79	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$4,314,051	0.1%	Rank history: #49 in FY2021, #73 in FY2022, #80 in FY2023 and #86 in FY2025; up 1 since FY2023.
80	Wake Forest University Health Sciences Top agencies HHS (Department of Health and Human Services)	$4,300,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #76 in FY2025; new.
81	IDT Biologika GMBH Top agencies HHS (Department of Health and Human Services)	$4,160,665	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Knowesis, Inc. Top agencies DHA (Defense Health Agency)	$4,138,160	0.1%	Rank history: not on the FY2021–FY2023 lists and #58 in FY2025; new.
83	Access To Advanced Health Institute Top agencies HHS (Department of Health and Human Services)	$4,075,646	0.1%	Rank history: #42 in FY2021, #59 in FY2022, not on the FY2023 list and not on the FY2025 list; up 62 since FY2023.
84	Mass General Brigham Incorporated 2 awardees, including The Mclean Hospital Corporation and The General Hospital Corporation Top agencies HHS (Department of Health and Human Services)	$3,740,327	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
85	University of Pittsburgh - of the Commonwealth System of Higher Education Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$3,731,568	0.1%	Rank history: #45 in FY2021, #88 in FY2022, #82 in FY2023 and #98 in FY2025; down 3 since FY2023.
86	Cherokee Nation Operational Solutions, L.L.C. Top agencies DHA (Defense Health Agency)	$3,684,038	0.1%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2025; new.
87	International Aids Vaccine Initiative Inc. Top agencies HHS (Department of Health and Human Services)	$3,611,233	0.1%	Rank history: #7 in FY2021, #28 in FY2022, #16 in FY2023 and not on the FY2025 list; down 71 since FY2023.
88	Versatope Therapeutics Inc. Top agencies HHS (Department of Health and Human Services)	$3,608,426	0.1%	Rank history: not on the FY2021–FY2022 lists, #89 in FY2023 and not on the FY2025 list; up 1 since FY2023.
89	Vysnova Partners LLC Top agencies DHA (Defense Health Agency)	$3,515,296	0.1%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2025; new.
90	Kaleo, Inc. Top agencies HHS (Department of Health and Human Services)	$3,477,742	0.1%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2025; new.
91	Walgreens Boots Alliance Inc. Through Walgreen Co. Top agencies HHS (Department of Health and Human Services)	$3,468,614	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Goldbelt C6, LLC Top agencies DHA (Defense Health Agency)	$3,457,527	0.1%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2025; new.
93	Research Innovations Incorporated Top agencies DARPA (Defense Advanced Research Projects Agency)	$3,292,324	0.1%	Rank history: not on the FY2021 list, #92 in FY2022, not on the FY2023 list and not on the FY2025 list; up 14 since FY2023.
94	Kapili Services, LLC Top agencies DHA (Defense Health Agency)	$3,259,830	0.1%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; new.
95	Mapp Biopharmaceutical, Inc. Top agencies HHS (Department of Health and Human Services)	$3,070,665	0.1%	Rank history: not on the FY2021 list, #3 in FY2022, #13 in FY2023 and #10 in FY2025; down 82 since FY2023.
96	Jackson Laboratory Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$3,000,196	0.1%	Rank history: #87 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 46 since FY2023.
97	Design-Zyme LLC Top agencies HHS (Department of Health and Human Services)	$2,999,999	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Molecular Express, Inc. Top agencies HHS (Department of Health and Human Services)	$2,999,352	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
99	University of California, San Diego Top agencies HHS (Department of Health and Human Services)	$2,990,479	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
100	Lumos Diagnostics, Inc. Top agencies HHS (Department of Health and Human Services)	$2,984,571	0.1%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2025; new.

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 $3.95 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