Top 100 Contractors in PSC AN12: Health R&D Services; Health Care Services; Applied Research, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Leidos Holdings, Inc. Through Leidos Biomedical Research Inc. Top agencies HHS (Department of Health and Human Services)	$824,050,790	50.3%	Rank history: #2 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	Technical Resources International, Inc. Top agencies HHS (Department of Health and Human Services)	$46,562,205	2.8%	Rank history: #19 in FY2021, #40 in FY2022, #24 in FY2023, #5 in FY2024 and #3 in FY2025; up 1 since Aug 2024–Jul 2025.
3	PPD Development LP Top agencies HHS (Department of Health and Human Services)	$35,872,350	2.2%	Rank history: not on the FY2021–FY2022 lists, #2 in FY2023, #2 in FY2024 and #4 in FY2025; up 1 since Aug 2024–Jul 2025.
4	Emergent Biosolutions Inc. Through Emergent Product Development Gaithersburg Inc. Top agencies HHS (Department of Health and Human Services)	$30,000,000	1.8%	Rank history: not on the FY2021–FY2023 lists, #3 in FY2024 and #2 in FY2025; down 2 since Aug 2024–Jul 2025.
5	Sanofi Pasteur Inc. Through Sanofi Vaccines US Inc. Top agencies HHS (Department of Health and Human Services)	$26,442,894	1.6%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #5 in FY2025; up 7 since Aug 2024–Jul 2025.
6	Duke University Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$23,748,231	1.5%	Rank history: #5 in FY2021, #2 in FY2022, #4 in FY2023, #4 in FY2024 and #9 in FY2025; down 1 since Aug 2024–Jul 2025.
7	American Type Culture Collection Top agencies HHS (Department of Health and Human Services)	$23,623,089	1.4%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; up 1 since Aug 2024–Jul 2025.
8	Tempus AI, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$20,949,466	1.3%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Aug 2024–Jul 2025.
9	Ophirex, Inc. Top agencies DHA (Defense Health Agency)	$19,912,417	1.2%	Rank history: not on the FY2021–FY2024 lists and #10 in FY2025; up 12 since Aug 2024–Jul 2025.
10	Sri International Top agencies HHS (Department of Health and Human Services)	$15,836,668	1.0%	Rank history: #11 in FY2021, #15 in FY2022, #11 in FY2023, #12 in FY2024 and #12 in FY2025; down 1 since Aug 2024–Jul 2025.
11	ST Jude Children's Research Hospital Inc. Top agencies HHS (Department of Health and Human Services)	$15,099,063	0.9%	Rank history: #12 in FY2021, #19 in FY2022, #8 in FY2023, #10 in FY2024 and #13 in FY2025; down 4 since Aug 2024–Jul 2025.
12	Revagenix Inc. Top agencies HHS (Department of Health and Human Services)	$14,231,864	0.9%	Rank history: #57 in FY2021, #22 in FY2022, #50 in FY2023, #13 in FY2024 and not on the FY2025 list; up 16 since Aug 2024–Jul 2025.
13	Johns Hopkins University 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$13,803,157	0.8%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; up 11 since Aug 2024–Jul 2025.
14	Fred Hutchinson Cancer Center Top agencies HHS (Department of Health and Human Services)	$13,686,764	0.8%	Rank history: not on the FY2021–FY2022 lists, #18 in FY2023, #15 in FY2024 and #15 in FY2025; unchanged since Aug 2024–Jul 2025.
15	University of Georgia Research Foundation, Inc. Top agencies HHS (Department of Health and Human Services)	$13,521,759	0.8%	Rank history: #14 in FY2021, #16 in FY2022, #16 in FY2023, #18 in FY2024 and #18 in FY2025; up 16 since Aug 2024–Jul 2025.
16	Thermo Fisher Scientific Inc. Through Fisher Bioservices Inc. Top agencies HHS (Department of Health and Human Services)	$12,425,058	0.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
17	Rho Federal Systems Division Inc. Top agencies HHS (Department of Health and Human Services)	$11,633,968	0.7%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; up 13 since Aug 2024–Jul 2025.
18	Icahn School of Medicine At Mount Sinai Top agencies HHS (Department of Health and Human Services)	$11,481,702	0.7%	Rank history: #6 in FY2021, #7 in FY2022, #5 in FY2023, #6 in FY2024 and #8 in FY2025; down 12 since Aug 2024–Jul 2025.
19	The Regents of the University of California. San Francisco Top agencies HHS (Department of Health and Human Services)	$11,401,846	0.7%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and #11 in FY2025; down 8 since Aug 2024–Jul 2025.
20	Wake Forest University Through Wake Forest University Health Sciences Top agencies HHS (Department of Health and Human Services)	$10,883,563	0.7%	Rank history: #71 in FY2021, #82 in FY2022, #72 in FY2023, #66 in FY2024 and #21 in FY2025; up 113 since Aug 2024–Jul 2025.
21	University of Texas System 4 awardees, including The University of Texas Health Science Center At San Antonio, The Univeristy of Texas M.d. Anderson Cancer Center and University of Texas Medical Branch At Galveston Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$10,779,005	0.7%	Rank history: #43 in FY2021, #71 in FY2022, #63 in FY2023, not on the FY2024 list and #95 in FY2025; new, not ranked in Aug 2024–Jul 2025.
22	Seattle Children's Hospital Top agencies HHS (Department of Health and Human Services)	$10,717,189	0.7%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; up 21 since Aug 2024–Jul 2025.
23	SNA International LLC Top agencies DHA (Defense Health Agency)	$10,541,742	0.6%	Rank history: not on the FY2021 list, #11 in FY2022, #13 in FY2023, #9 in FY2024 and #7 in FY2025; down 13 since Aug 2024–Jul 2025.
24	Trustees of Boston University 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$10,239,106	0.6%	Rank history: #32 in FY2021, #34 in FY2022, #40 in FY2023, #44 in FY2024 and #27 in FY2025; up 5 since Aug 2024–Jul 2025.
25	The Trustees of the University of Pennsylvania Top agencies HHS (Department of Health and Human Services)	$9,467,463	0.6%	Rank history: #16 in FY2021, #17 in FY2022, #14 in FY2023, #19 in FY2024 and #30 in FY2025; down 7 since Aug 2024–Jul 2025.
26	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$8,875,052	0.5%	Rank history: #4 in FY2021, #31 in FY2022, #41 in FY2023, #26 in FY2024 and #25 in FY2025; up 20 since Aug 2024–Jul 2025.
27	University of North Carolina At Chapel Hill Top agencies HHS (Department of Health and Human Services)	$7,969,895	0.5%	Rank history: #30 in FY2021, #26 in FY2022, #27 in FY2023, #20 in FY2024 and #29 in FY2025; down 2 since Aug 2024–Jul 2025.
28	Battelle Memorial Institute Top agencies HHS (Department of Health and Human Services)	$7,949,367	0.5%	Rank history: #46 in FY2021, #53 in FY2022, #38 in FY2023, #17 in FY2024 and #28 in FY2025; down 13 since Aug 2024–Jul 2025.
29	Locus Biosciences Inc. Top agencies HHS (Department of Health and Human Services)	$7,895,865	0.5%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
30	University System of Maryland 2 awardees, including University of Maryland, Baltimore and University of Maryland, College Park Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$6,955,174	0.4%	Rank history: #31 in FY2021, not on the FY2022 list, #26 in FY2023, not on the FY2024 list and #17 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	University of California San Diego Top agencies HHS (Department of Health and Human Services)	$6,872,429	0.4%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #39 in FY2025; up 65 since Aug 2024–Jul 2025.
32	Emory University Top agencies HHS (Department of Health and Human Services)	$5,855,457	0.4%	Rank history: #25 in FY2021, #54 in FY2022, #23 in FY2023, #27 in FY2024 and #23 in FY2025; down 15 since Aug 2024–Jul 2025.
33	Regents of the University of Minnesota Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$5,841,555	0.4%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; up 18 since Aug 2024–Jul 2025.
34	The Washington University Top agencies HHS (Department of Health and Human Services)	$5,582,205	0.3%	Rank history: #82 in FY2021, #63 in FY2022, not on the FY2023 list, #69 in FY2024 and #46 in FY2025; up 22 since Aug 2024–Jul 2025.
35	University of Montana Top agencies HHS (Department of Health and Human Services)	$5,437,451	0.3%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; up 95 since Aug 2024–Jul 2025.
36	The Mitre Corporation Top agencies HHS (Department of Health and Human Services)	$5,263,156	0.3%	Rank history: not on the FY2021–FY2023 lists, #46 in FY2024 and #36 in FY2025; up 5 since Aug 2024–Jul 2025.
37	The Emmes Company, LLC Top agencies HHS (Department of Health and Human Services)	$4,925,716	0.3%	Rank history: #28 in FY2021, #25 in FY2022, #22 in FY2023, #23 in FY2024 and #31 in FY2025; down 14 since Aug 2024–Jul 2025.
38	University of Alabama At Birmingham Top agencies HHS (Department of Health and Human Services)	$4,839,323	0.3%	Rank history: #95 in FY2021, not on the FY2022–FY2024 lists and #59 in FY2025; up 28 since Aug 2024–Jul 2025.
39	La Jolla Institute for Immunology Top agencies HHS (Department of Health and Human Services)	$4,738,769	0.3%	Rank history: #44 in FY2021, #56 in FY2022, #77 in FY2023, not on the FY2024 list and #97 in FY2025; up 64 since Aug 2024–Jul 2025.
40	Chromologic LLC Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$4,699,532	0.3%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, #87 in FY2024 and #60 in FY2025; up 66 since Aug 2024–Jul 2025.
41	Digital Infuzion, LLC Top agencies HHS (Department of Health and Human Services)	$4,671,795	0.3%	Rank history: #93 in FY2021, #55 in FY2022, #64 in FY2023, #63 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
42	The University of Chicago Top agencies HHS (Department of Health and Human Services)	$4,519,949	0.3%	Rank history: #15 in FY2021, #28 in FY2022, #6 in FY2023, #32 in FY2024 and #40 in FY2025; down 4 since Aug 2024–Jul 2025.
43	Eminent Services Corp Top agencies HHS (Department of Health and Human Services)	$4,441,117	0.3%	Rank history: #84 in FY2021, #69 in FY2022, #49 in FY2023, #67 in FY2024 and #79 in FY2025; up 44 since Aug 2024–Jul 2025.
44	President and Fellows of Harvard College Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$3,952,988	0.2%	Rank history: #26 in FY2021, #24 in FY2022, not on the FY2023–FY2024 lists and #38 in FY2025; new, not ranked in Aug 2024–Jul 2025.
45	Tao Treasures, LLC Top agencies DHA (Defense Health Agency)	$3,899,771	0.2%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; up 81 since Aug 2024–Jul 2025.
46	Baruch S. Blumberg Institute Top agencies HHS (Department of Health and Human Services)	$3,760,574	0.2%	Rank history: not on the FY2021–FY2022 lists, #46 in FY2023, #35 in FY2024 and not on the FY2025 list; down 4 since Aug 2024–Jul 2025.
47	University of Washington Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$3,737,165	0.2%	Rank history: not on the FY2021–FY2025 lists; up 10 since Aug 2024–Jul 2025.
48	The Leland Stanford Junior University 2 awardees Top agencies HHS (Department of Health and Human Services)	$3,547,619	0.2%	Rank history: #74 in FY2021, #86 in FY2022, #71 in FY2023, #71 in FY2024 and #81 in FY2025; up 14 since Aug 2024–Jul 2025.
49	Health Research, Inc. 2 awardees Top agencies HHS (Department of Health and Human Services)	$3,497,428	0.2%	Rank history: not on the FY2021 list, #60 in FY2022, #51 in FY2023, #82 in FY2024 and #48 in FY2025; up 31 since Aug 2024–Jul 2025.
50	Integral Molecular Inc. Top agencies HHS (Department of Health and Human Services)	$3,297,472	0.2%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 17 since Aug 2024–Jul 2025.
51	Peraton Inc. Top agencies HHS (Department of Health and Human Services)	$3,251,369	0.2%	Rank history: not on the FY2021–FY2023 lists, #61 in FY2024 and #54 in FY2025; up 136 since Aug 2024–Jul 2025.
52	TDA Research, Inc. Top agencies DHA (Defense Health Agency)	$3,249,995	0.2%	Rank history: not on the FY2021 list, #68 in FY2022, #65 in FY2023, not on the FY2024 list and #47 in FY2025; up 30 since Aug 2024–Jul 2025.
53	University of Southern California Top agencies HHS (Department of Health and Human Services)	$3,043,929	0.2%	Rank history: #41 in FY2021, #48 in FY2022, #58 in FY2023, #53 in FY2024 and #49 in FY2025; down 8 since Aug 2024–Jul 2025.
54	Continuity Biosciences, LLC Top agencies HHS (Department of Health and Human Services)	$2,995,581	0.2%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Aug 2024–Jul 2025.
55	Novomedix LLC Top agencies HHS (Department of Health and Human Services)	$2,977,013	0.2%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Aug 2024–Jul 2025.
56	Precision for Medicine, Inc. Top agencies HHS (Department of Health and Human Services)	$2,968,519	0.2%	Rank history: not on the FY2021–FY2023 lists, #83 in FY2024 and #69 in FY2025; up 21 since Aug 2024–Jul 2025.
57	Microbiotix, Inc. Top agencies HHS (Department of Health and Human Services)	$2,938,788	0.2%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023, #94 in FY2024 and #33 in FY2025; up 27 since Aug 2024–Jul 2025.
58	Icon Government and Public Health Solutions, Inc. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$2,937,934	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
59	Arisan Therapeutics Inc. Top agencies HHS (Department of Health and Human Services)	$2,933,547	0.2%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
60	Oregon Health & Science University Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$2,916,609	0.2%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and not on the FY2024–FY2025 lists; up 151 since Aug 2024–Jul 2025.
61	Crestone, Inc. Top agencies HHS (Department of Health and Human Services)	$2,901,566	0.2%	Rank history: not on the FY2021 list, #18 in FY2022, #45 in FY2023, #42 in FY2024 and #34 in FY2025; down 39 since Aug 2024–Jul 2025.
62	The Translational Genomics Research Institute Top agencies HHS (Department of Health and Human Services)	$2,754,442	0.2%	Rank history: not on the FY2021–FY2025 lists; up 76 since Aug 2024–Jul 2025.
63	University of North Carolina System Office Through University of North Carolina At Chapel Hill Top agencies HHS (Department of Health and Human Services)	$2,699,202	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
64	University of New Mexico Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,649,093	0.2%	Rank history: not on the FY2021–FY2025 lists; down 3 since Aug 2024–Jul 2025.
65	Luna Innovations Incorporated Through Luna Labs USA LLC Top agencies DHA (Defense Health Agency)	$2,599,998	0.2%	Rank history: #51 in FY2021, not on the FY2022–FY2024 lists and #51 in FY2025; new, not ranked in Aug 2024–Jul 2025.
66	Paxauris LLC Top agencies DHA (Defense Health Agency)	$2,599,403	0.2%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; up 156 since Aug 2024–Jul 2025.
67	The University of Iowa Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,532,103	0.2%	Rank history: #35 in FY2021, #33 in FY2022, #52 in FY2023, #41 in FY2024 and #50 in FY2025; down 32 since Aug 2024–Jul 2025.
68	GE Medical Systems Information Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$2,474,025	0.2%	Rank history: not on the FY2021–FY2023 lists, #59 in FY2024 and not on the FY2025 list; down 20 since Aug 2024–Jul 2025.
69	Quality Biological Inc. Top agencies HHS (Department of Health and Human Services)	$2,436,939	0.1%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; up 30 since Aug 2024–Jul 2025.
70	The University of Kentucky Research Foundation Top agencies HHS (Department of Health and Human Services)	$2,378,077	0.1%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; down 6 since Aug 2024–Jul 2025.
71	Abviro LLC Top agencies HHS (Department of Health and Human Services)	$2,361,958	0.1%	Rank history: not on the FY2021–FY2023 lists, #36 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
72	Culmen International, LLC Top agencies DHA (Defense Health Agency)	$2,309,778	0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; up 57 since Aug 2024–Jul 2025.
73	Department of Public Health Connecticut Top agencies HHS (Department of Health and Human Services)	$2,276,917	0.1%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and not on the FY2025 list; down 18 since Aug 2024–Jul 2025.
74	Coriell Institute for Medical Research, Inc. Top agencies HHS (Department of Health and Human Services)	$2,253,280	0.1%	Rank history: not on the FY2021–FY2024 lists and #19 in FY2025; down 58 since Aug 2024–Jul 2025.
75	The Children's Hospital Corporation Top agencies HHS (Department of Health and Human Services)	$2,112,104	0.1%	Rank history: not on the FY2021 list, #36 in FY2022, #35 in FY2023, #81 in FY2024 and #84 in FY2025; up 3 since Aug 2024–Jul 2025.
76	Albert Einstein College of Medicine Top agencies HHS (Department of Health and Human Services)	$2,093,706	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 32 since Aug 2024–Jul 2025.
77	Case Western Reserve University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,088,664	0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 47 since Aug 2024–Jul 2025.
78	Vanderbilt University Medical Center Top agencies HHS (Department of Health and Human Services)	$2,044,832	0.1%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and not on the FY2025 list; down 18 since Aug 2024–Jul 2025.
79	Institut De Formulation DES Vaccins (Ch) SA Top agencies HHS (Department of Health and Human Services)	$1,999,974	0.1%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #89 in FY2025; up 6 since Aug 2024–Jul 2025.
80	Collaborations Pharmaceuticals, Inc. Top agencies HHS (Department of Health and Human Services)	$1,999,195	0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; new, not ranked in Aug 2024–Jul 2025.
81	Doseoptics LLC Top agencies HHS (Department of Health and Human Services)	$1,977,698	0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 147 since Aug 2024–Jul 2025.
82	University of Mississippi Medical Center Top agencies HHS (Department of Health and Human Services)	$1,955,255	0.1%	Rank history: #24 in FY2021, #39 in FY2022, #12 in FY2023, not on the FY2024 list and #45 in FY2025; up 173 since Aug 2024–Jul 2025.
83	Lynntech Inc. Top agencies DHA (Defense Health Agency)	$1,949,986	0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; up 98 since Aug 2024–Jul 2025.
84	Puriolabs, LLC Top agencies DHA (Defense Health Agency)	$1,946,974	0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; new, not ranked in Aug 2024–Jul 2025.
85	Southern Methodist University Inc Top agencies DHA (Defense Health Agency)	$1,927,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; new, not ranked in Aug 2024–Jul 2025.
86	Zepto Life Technology, Inc. Top agencies HHS (Department of Health and Human Services)	$1,878,981	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
87	Creare LLC Top agencies DHA (Defense Health Agency)	$1,849,836	0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; new, not ranked in Aug 2024–Jul 2025.
88	Scripps Research Institute Top agencies HHS (Department of Health and Human Services)	$1,818,959	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; down 35 since Aug 2024–Jul 2025.
89	University of Utah Top agencies HHS (Department of Health and Human Services)	$1,806,000	0.1%	Rank history: #48 in FY2021, #62 in FY2022, #99 in FY2023, #55 in FY2024 and #55 in FY2025; down 53 since Aug 2024–Jul 2025.
90	CFD Research Corporation Top agencies DHA (Defense Health Agency)	$1,804,963	0.1%	Rank history: not on the FY2021–FY2025 lists; down 11 since Aug 2024–Jul 2025.
91	Bering Straits Native Corporation 2 awardees, including Laulima Government Solutions, LLC Top agencies DHA (Defense Health Agency)	$1,796,090	0.1%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Aug 2024–Jul 2025.
92	State of Illinois Through Department of Public Health Illinois Top agencies HHS (Department of Health and Human Services)	$1,745,454	0.1%	Rank history: #97 in FY2021, not on the FY2022–FY2023 lists, #93 in FY2024 and #86 in FY2025; down 11 since Aug 2024–Jul 2025.
93	University of Miami Top agencies HHS (Department of Health and Human Services)	$1,685,036	0.1%	Rank history: #56 in FY2021, #74 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
94	Inimmune Corp Top agencies HHS (Department of Health and Human Services)	$1,648,211	0.1%	Rank history: #68 in FY2021, not on the FY2022–FY2023 lists, #92 in FY2024 and not on the FY2025 list; up 90 since Aug 2024–Jul 2025.
95	Baebies, Inc. Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$1,598,617	0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; up 18 since Aug 2024–Jul 2025.
96	University of Hawaii Top agencies HHS (Department of Health and Human Services)	$1,505,833	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
97	Ceramedix Holding, LLC Top agencies HHS (Department of Health and Human Services)	$1,500,000	0.1%	Rank history: not on the FY2021–FY2025 lists; up 68 since Aug 2024–Jul 2025.
98	Micron Biomedical Inc. Top agencies HHS (Department of Health and Human Services)	$1,499,999	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
99	Perfusion Medical, Inc. Top agencies DHA (Defense Health Agency)	$1,499,773	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
100	Biological Mimetics, Inc. Top agencies HHS (Department of Health and Human Services)	$1,498,641	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.

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 $1.64 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.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Aug 2024–Jul 2025. "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.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

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