Top 100 Contractors in NAICS 541714: Research and Development in Biotechnology (except Nanobiotechnology), FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Start2 Group, Inc. Top agencies HHS (Department of Health and Human Services)	$105,217,536	5.2%	Rank history: not on the FY2021–FY2023 lists and #12 in FY2024; up 11 since FY2024.
2	Amgen USA Inc Top agencies HHS (Department of Health and Human Services)	$89,932,937	4.5%	Rank history: not on the FY2021–FY2023 lists and #5 in FY2024; up 3 since FY2024.
3	Albert B. Sabin Vaccine Institute, Inc. (The) Top agencies HHS (Department of Health and Human Services)	$70,386,301	3.5%	Rank history: not on the FY2021–FY2023 lists and #25 in FY2024; up 22 since FY2024.
4	Battelle Memorial Institute Top agencies HHS (Department of Health and Human Services) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$68,765,976	3.4%	Rank history: #43 in FY2021, #38 in FY2022, #26 in FY2023 and #15 in FY2024; up 11 since FY2024.
5	L3Harris Technologies, Inc. Through L3 Technologies, Inc. Top agencies Navy (Department of the Navy)	$65,963,129	3.3%	Rank history: #3 in FY2021, not on the FY2022–FY2023 lists and #7 in FY2024; up 2 since FY2024.
6	The Boeing Company Top agencies MDA (DOD Missile Defense Agency)	$64,474,323	3.2%	Rank history: #1 in FY2021, #1 in FY2022, #5 in FY2023 and #3 in FY2024; down 3 since FY2024.
7	Basilea Pharmaceutica AG Through Basilea Pharmaceutica International Ltd, Allschwil Top agencies HHS (Department of Health and Human Services)	$63,819,710	3.2%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; up 9 since FY2024.
8	Cidara Therapeutics Inc. Top agencies HHS (Department of Health and Human Services)	$58,051,984	2.9%	Rank history: not on the FY2021–FY2024 lists; new.
9	Siga Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$53,123,168	2.6%	Rank history: #2 in FY2021, #17 in FY2022, #7 in FY2023 and #6 in FY2024; down 3 since FY2024.
10	Mapp Biopharmaceutical, Inc. Top agencies HHS (Department of Health and Human Services)	$49,989,889	2.5%	Rank history: not on the FY2021 list, #3 in FY2022, #13 in FY2023 and #95 in FY2024; up 85 since FY2024.
11	Emergent Biosolutions Inc. 2 awardees, including Emergent Biodefense Operations Lansing LLC and Emergent Product Development Gaithersburg Inc. Top agencies HHS (Department of Health and Human Services)	$33,778,951	1.7%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2024; down 1 since FY2024.
12	Trustees of Boston University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$33,043,272	1.6%	Rank history: not on the FY2021 list, #22 in FY2022, #12 in FY2023 and #20 in FY2024; up 8 since FY2024.
13	Leidos Holdings, Inc. 2 awardees, including Leidos, Inc. Top agencies Navy (Department of the Navy) DHA (Defense Health Agency) DARPA (Defense Advanced Research Projects Agency)	$29,445,907	1.5%	Rank history: #22 in FY2021, #37 in FY2022, #55 in FY2023 and #35 in FY2024; up 22 since FY2024.
14	Sanofi Pasteur Inc. Through Sanofi Vaccines US Inc. Top agencies HHS (Department of Health and Human Services)	$29,369,521	1.5%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2024; up 12 since FY2024.
15	Locus Biosciences Inc. Top agencies HHS (Department of Health and Human Services)	$28,257,626	1.4%	Rank history: not on the FY2021 list, #62 in FY2022, #56 in FY2023 and #18 in FY2024; up 3 since FY2024.
16	GE Medical Systems Information Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$26,920,376	1.3%	Rank history: not on the FY2021–FY2022 lists, #23 in FY2023 and #57 in FY2024; up 41 since FY2024.
17	Kaleo, Inc. Top agencies HHS (Department of Health and Human Services)	$25,996,476	1.3%	Rank history: not on the FY2021–FY2023 lists and #90 in FY2024; up 73 since FY2024.
18	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$21,361,089	1.1%	Rank history: not on the FY2021 list, #90 in FY2022, #35 in FY2023 and #33 in FY2024; up 15 since FY2024.
19	Melinta Therapeutics, LLC Top agencies HHS (Department of Health and Human Services)	$21,335,789	1.1%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023 and #67 in FY2024; up 48 since FY2024.
20	Technical Resources International, Inc. Top agencies HHS (Department of Health and Human Services)	$21,243,293	1.1%	Rank history: not on the FY2021–FY2022 lists, #4 in FY2023 and #11 in FY2024; down 9 since FY2024.
21	SNA International LLC Top agencies DHA (Defense Health Agency)	$20,980,618	1.0%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2024; up 23 since FY2024.
22	Osivax Top agencies HHS (Department of Health and Human Services)	$20,229,361	1.0%	Rank history: not on the FY2021–FY2024 lists; new.
23	Prenosis, Inc. Top agencies HHS (Department of Health and Human Services)	$20,000,000	1.0%	Rank history: not on the FY2021–FY2024 lists; new.
24	Public Health Vaccines LLC Top agencies HHS (Department of Health and Human Services)	$19,456,972	1.0%	Rank history: #24 in FY2021, not on the FY2022 list, #73 in FY2023 and #55 in FY2024; up 31 since FY2024.
25	University Lab Partners Top agencies HHS (Department of Health and Human Services)	$19,092,350	0.9%	Rank history: not on the FY2021–FY2024 lists; up 93 since FY2024.
26	Abbott Laboratories Top agencies HHS (Department of Health and Human Services)	$18,896,950	0.9%	Rank history: #46 in FY2021, #16 in FY2022 and not on the FY2023–FY2024 lists; returned.
27	Goldbelt, Incorporated 3 awardees, including Goldbelt C6, LLC, Goldbelt Frontier, LLC and Goldbelt Apex, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army) Navy (Department of the Navy)	$18,026,986	0.9%	Rank history: not on the FY2021–FY2024 lists; new.
28	Vedanta Biosciences, Inc. Top agencies HHS (Department of Health and Human Services)	$18,000,000	0.9%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; down 11 since FY2024.
29	4J Therapeutics Inc. Top agencies HHS (Department of Health and Human Services)	$16,992,133	0.8%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; down 6 since FY2024.
30	Invirsa, Inc. Top agencies HHS (Department of Health and Human Services)	$15,293,238	0.8%	Rank history: #80 in FY2021 and not on the FY2022–FY2024 lists; up 94 since FY2024.
31	Personalis, Inc. Top agencies VA (Department of Veterans Affairs)	$13,831,100	0.7%	Rank history: not on the FY2021 list, #45 in FY2022, #57 in FY2023 and #54 in FY2024; up 23 since FY2024.
32	Rafa Laboratories Ltd Top agencies HHS (Department of Health and Human Services)	$13,437,694	0.7%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023 and not on the FY2024 list; returned.
33	Avian, LLC Top agencies Navy (Department of the Navy)	$13,378,901	0.7%	Rank history: not on the FY2021 list, #39 in FY2022, #40 in FY2023 and #37 in FY2024; up 4 since FY2024.
34	RTX Corporation 3 awardees, including Raytheon Company, RTX BBN Technologies, Inc. and Rockwell Collins, Inc. Top agencies Navy (Department of the Navy) DARPA (Defense Advanced Research Projects Agency) USAF (Department of the Air Force)	$11,351,454	0.6%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2024; up 6 since FY2024.
35	Crossject SA Top agencies HHS (Department of Health and Human Services)	$11,291,005	0.6%	Rank history: not on the FY2021 list, #5 in FY2022 and not on the FY2023–FY2024 lists; returned.
36	University System of Maryland 2 awardees, including University of Maryland, College Park and University of Maryland, Baltimore Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$11,246,937	0.6%	Rank history: #53 in FY2021, #75 in FY2022, #66 in FY2023 and not on the FY2024 list; up 203 since FY2024.
37	Coriell Institute for Medical Research, Inc. Top agencies HHS (Department of Health and Human Services)	$10,685,838	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
38	General Electric Company 2 awardees, including GE Energy Power Conversion Naval Systems Inc. Top agencies Navy (Department of the Navy)	$10,433,210	0.5%	Rank history: #27 in FY2021, #41 in FY2022, #37 in FY2023 and #61 in FY2024; up 23 since FY2024.
39	The Chenega Corporation 2 awardees, including Chenega Professional & Technical Services LLC Top agencies DHA (Defense Health Agency)	$10,343,176	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
40	The Leland Stanford Junior University Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$9,973,269	0.5%	Rank history: not on the FY2021 list, #67 in FY2022, #41 in FY2023 and #27 in FY2024; down 13 since FY2024.
41	PGI Holding Corporation Through Psychogenics Inc. Top agencies HHS (Department of Health and Human Services)	$9,482,040	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
42	Seattle Children's Hospital Top agencies HHS (Department of Health and Human Services)	$9,356,112	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
43	Bering Straits Native Corporation 2 awardees, including Kapili Services, LLC and Laulima Government Solutions, LLC Top agencies DHA (Defense Health Agency)	$9,195,196	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
44	University of California, LOS Angeles Top agencies HHS (Department of Health and Human Services)	$9,188,827	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
45	New York Genome Center, Inc. Top agencies HHS (Department of Health and Human Services)	$8,695,988	0.4%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023 and #48 in FY2024; up 3 since FY2024.
46	Orexo AB Through Orexo US Inc. Top agencies HHS (Department of Health and Human Services)	$8,450,715	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
47	Alpha Genesis Inc. Top agencies HHS (Department of Health and Human Services)	$8,408,640	0.4%	Rank history: not on the FY2021–FY2023 lists and #52 in FY2024; up 5 since FY2024.
48	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies HHS (Department of Health and Human Services)	$8,270,383	0.4%	Rank history: #47 in FY2021, #36 in FY2022, #39 in FY2023 and #39 in FY2024; down 9 since FY2024.
49	Thermo Electron Corporation 3 awardees, including Fisher Bioservices Inc., Life Technologies Corporation and Fisher Scientific Company L.L.C. Top agencies HHS (Department of Health and Human Services)	$8,146,756	0.4%	Rank history: not on the FY2021 list, #10 in FY2022, #71 in FY2023 and not on the FY2024 list; up 224 since FY2024.
50	Rho Federal Systems Division Inc. Top agencies HHS (Department of Health and Human Services)	$8,000,000	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
51	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies USUHS (DOD Uniformed Services University of the Health Sciences) DHA (Defense Health Agency)	$7,928,891	0.4%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; down 19 since FY2024.
52	Sapphiros LLC Top agencies HHS (Department of Health and Human Services)	$7,898,611	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
53	The Broad Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$7,405,200	0.4%	Rank history: not on the FY2021–FY2022 lists, #44 in FY2023 and #56 in FY2024; up 3 since FY2024.
54	Innovation Development Institute Inc. Top agencies HHS (Department of Health and Human Services)	$6,868,462	0.3%	Rank history: not on the FY2021–FY2024 lists; up 65 since FY2024.
55	Vysnova Partners LLC Top agencies DHA (Defense Health Agency)	$6,567,036	0.3%	Rank history: not on the FY2021–FY2023 lists and #89 in FY2024; up 34 since FY2024.
56	STI Legacy, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$6,449,245	0.3%	Rank history: not on the FY2021–FY2024 lists; up 172 since FY2024.
57	Duke University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$6,382,373	0.3%	Rank history: #33 in FY2021, #30 in FY2022, #36 in FY2023 and #30 in FY2024; down 27 since FY2024.
58	Knowesis, Inc. Top agencies DHA (Defense Health Agency)	$6,381,206	0.3%	Rank history: not on the FY2021–FY2023 lists and #82 in FY2024; up 24 since FY2024.
59	Spero Therapeutics, Inc. Top agencies HHS (Department of Health and Human Services)	$6,360,502	0.3%	Rank history: not on the FY2021 list, #34 in FY2022, not on the FY2023 list and #38 in FY2024; down 21 since FY2024.
60	Lumos Diagnostics, Inc. Top agencies HHS (Department of Health and Human Services)	$6,198,459	0.3%	Rank history: not on the FY2021–FY2023 lists and #100 in FY2024; up 40 since FY2024.
61	Regents of the University of Michigan Top agencies HHS (Department of Health and Human Services) DARPA (Defense Advanced Research Projects Agency)	$6,081,927	0.3%	Rank history: not on the FY2021 list, #72 in FY2022, #68 in FY2023 and #42 in FY2024; down 19 since FY2024.
62	General Dynamics Corporation 2 awardees, including Applied Physical Sciences Corp and General Dynamics Information Technology, Inc. Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$5,699,401	0.3%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and #72 in FY2024; up 10 since FY2024.
63	The Charles Stark Draper Laboratory, Inc. Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services) Navy (Department of the Navy)	$5,697,555	0.3%	Rank history: #57 in FY2021, not on the FY2022 list, #19 in FY2023 and #29 in FY2024; down 34 since FY2024.
64	Eitr Biologics, Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$5,638,741	0.3%	Rank history: not on the FY2021–FY2024 lists; up 106 since FY2024.
65	Innovative Defense Technologies LLC Top agencies Navy (Department of the Navy)	$5,411,237	0.3%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2024; up 3 since FY2024.
66	L3 Technologies, Inc. Top agencies Navy (Department of the Navy)	$5,362,638	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
67	La Jolla Institute for Immunology Top agencies HHS (Department of Health and Human Services)	$5,239,657	0.3%	Rank history: #62 in FY2021, #77 in FY2022, not on the FY2023 list and #63 in FY2024; down 4 since FY2024.
68	Techwerks LLC Top agencies DHA (Defense Health Agency)	$5,037,142	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
69	Cherokee Nation Through Cherokee Nation Operational Solutions, L.L.C. Top agencies DHA (Defense Health Agency)	$4,978,351	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
70	Paratek Pharmaceuticals, Inc. Top agencies HHS (Department of Health and Human Services)	$4,958,461	0.2%	Rank history: #6 in FY2021, not on the FY2022 list, #18 in FY2023 and #28 in FY2024; down 42 since FY2024.
71	Abss Solutions Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$4,796,755	0.2%	Rank history: #10 in FY2021, #14 in FY2022, not on the FY2023 list and #34 in FY2024; down 37 since FY2024.
72	Odyssey Systems Consulting Group, Ltd. Top agencies DHA (Defense Health Agency)	$4,687,053	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
73	Parsons Corporation Through Parsons Government Services Inc. Top agencies Navy (Department of the Navy)	$4,677,046	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
74	Wake Forest University Through Wake Forest University Health Sciences Top agencies HHS (Department of Health and Human Services)	$4,675,416	0.2%	Rank history: not on the FY2021–FY2024 lists; up 273 since FY2024.
75	Northwestern University 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$4,570,568	0.2%	Rank history: not on the FY2021 list, #61 in FY2022, #69 in FY2023 and #65 in FY2024; down 10 since FY2024.
76	Texas Biomedical Research Institute Top agencies HHS (Department of Health and Human Services)	$4,424,802	0.2%	Rank history: not on the FY2021–FY2024 lists; up 254 since FY2024.
77	University of Hawaii Systems 2 awardees, including University of Hawaii Top agencies DARPA (Defense Advanced Research Projects Agency)	$4,206,330	0.2%	Rank history: not on the FY2021 list, #63 in FY2022, #100 in FY2023 and not on the FY2024 list; returned.
78	University of Texas System 5 awardees, including The Univeristy of Texas M.d. Anderson Cancer Center, University of Texas Medical Branch At Galveston and The University of Texas Health Science Center At San Antonio Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$3,989,529	0.2%	Rank history: #54 in FY2021, not on the FY2022 list, #92 in FY2023 and not on the FY2024 list; up 261 since FY2024.
79	Priority One Services, Inc. Top agencies HHS (Department of Health and Human Services)	$3,987,126	0.2%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023 and #78 in FY2024; down 1 since FY2024.
80	Crestone, Inc. Top agencies HHS (Department of Health and Human Services)	$3,904,060	0.2%	Rank history: not on the FY2021 list, #76 in FY2022, #95 in FY2023 and #75 in FY2024; down 5 since FY2024.
81	The Bionetics Corporation Top agencies HHS (Department of Health and Human Services)	$3,896,142	0.2%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2024; down 12 since FY2024.
82	Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek TNO Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$3,827,873	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
83	Aptitude Medical Systems Inc Top agencies HHS (Department of Health and Human Services)	$3,750,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #21 in FY2023 and not on the FY2024 list; returned.
84	President and Fellows of Harvard College 2 awardees Top agencies HHS (Department of Health and Human Services)	$3,684,839	0.2%	Rank history: #34 in FY2021, #49 in FY2022, #25 in FY2023 and not on the FY2024 list; returned.
85	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$3,578,738	0.2%	Rank history: #49 in FY2021, #73 in FY2022, #80 in FY2023 and #79 in FY2024; down 6 since FY2024.
86	PPD Development LP Top agencies HHS (Department of Health and Human Services)	$3,569,108	0.2%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2024; down 82 since FY2024.
87	University of Illinois 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$3,303,123	0.2%	Rank history: not on the FY2021–FY2024 lists; up 343 since FY2024.
88	Rutgers, the State University 2 awardees Top agencies DARPA (Defense Advanced Research Projects Agency) HHS (Department of Health and Human Services)	$3,240,479	0.2%	Rank history: #55 in FY2021, #50 in FY2022, #87 in FY2023 and #60 in FY2024; down 28 since FY2024.
89	Sierra Nevada Company, LLC Through Sierra Space Corp Top agencies NASA (National Aeronautics and Space Administration)	$3,225,210	0.2%	Rank history: not on the FY2021–FY2024 lists; up 78 since FY2024.
90	National Academy of Sciences Top agencies DHA (Defense Health Agency)	$3,203,101	0.2%	Rank history: not on the FY2021–FY2024 lists; up 147 since FY2024.
91	DNA Hive LLC Top agencies HHS (Department of Health and Human Services)	$3,090,715	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
92	Adjuvax LLC Top agencies HHS (Department of Health and Human Services)	$3,000,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
93	Emory University Top agencies HHS (Department of Health and Human Services)	$2,887,592	0.1%	Rank history: #66 in FY2021, #83 in FY2022, #98 in FY2023 and not on the FY2024 list; up 8 since FY2024.
94	Biofire Defense LLC 2 awardees Top agencies HHS (Department of Health and Human Services) DOS (Department of State)	$2,870,364	0.1%	Rank history: not on the FY2021–FY2024 lists; up 94 since FY2024.
95	DLH Holdings Corp 2 awardees, including Irving Burton Associates, LLC Top agencies DHA (Defense Health Agency)	$2,866,477	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
96	Infinity Biologix LLC Top agencies HHS (Department of Health and Human Services)	$2,712,503	0.1%	Rank history: #28 in FY2021 and not on the FY2022–FY2024 lists; returned.
97	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) Navy (Department of the Navy)	$2,666,731	0.1%	Rank history: #45 in FY2021, #88 in FY2022, #82 in FY2023 and #85 in FY2024; down 12 since FY2024.
98	Katmai Diversified Services LLC Top agencies DHA (Defense Health Agency)	$2,562,996	0.1%	Rank history: not on the FY2021–FY2024 lists; up 16 since FY2024.
99	New York University Top agencies DARPA (Defense Advanced Research Projects Agency)	$2,562,033	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
100	Redwire Space Technologies, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$2,499,551	0.1%	Rank history: not on the FY2021–FY2024 lists; 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 $2.01 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. 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