Top 100 Contractors in PSC AN: Health R&D Services, Jul 2025–Jun 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Leidos Holdings, Inc. 3 awardees, including Leidos Biomedical Research Inc. and Leidos, Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy) DHA (Defense Health Agency)	$821,477,992	17.6%	Rank history: #1 in FY2021, #1 in FY2022, #2 in FY2023, #3 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Advanced Technology International Top agencies HHS (Department of Health and Human Services)	$247,999,997	5.3%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and not on the FY2025 list; unchanged since Jul 2024–Jun 2025.
3	Medical Technology Enterprise Consortium Top agencies DHA (Defense Health Agency) Navy (Department of the Navy) Army (Department of the Army)	$193,255,675	4.1%	Rank history: #5 in FY2021, #4 in FY2022, #7 in FY2023, #4 in FY2024 and #2 in FY2025; unchanged since Jul 2024–Jun 2025.
4	Amgen USA Inc Top agencies HHS (Department of Health and Human Services)	$149,963,872	3.2%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #5 in FY2025; up 1 since Jul 2024–Jun 2025.
5	Shionogi & Company Limited Through Shionogi Inc. Top agencies HHS (Department of Health and Human Services)	$119,160,688	2.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
6	Phlow Corp. Top agencies HHS (Department of Health and Human Services)	$113,641,157	2.4%	Rank history: not on the FY2021 list, #10 in FY2022, #26 in FY2023, #13 in FY2024 and #100 in FY2025; up 3 since Jul 2024–Jun 2025.
7	Start2 Group, Inc. Top agencies HHS (Department of Health and Human Services)	$106,908,704	2.3%	Rank history: not on the FY2021–FY2023 lists, #27 in FY2024 and #3 in FY2025; up 15 since Jul 2024–Jun 2025.
8	The Mitre Corporation Top agencies HHS (Department of Health and Human Services) FCC (Federal Communications Commission)	$97,032,353	2.1%	Rank history: #6 in FY2021, #7 in FY2022, #16 in FY2023, #8 in FY2024 and #6 in FY2025; unchanged since Jul 2024–Jun 2025.
9	Mathematica Inc. Top agencies HHS (Department of Health and Human Services)	$89,203,178	1.9%	Rank history: #49 in FY2021, #30 in FY2022, #32 in FY2023, #10 in FY2024 and #8 in FY2025; up 1 since Jul 2024–Jun 2025.
10	Basilea Pharmaceutica AG Through Basilea Pharmaceutica International Ltd, Allschwil Top agencies HHS (Department of Health and Human Services)	$83,140,980	1.8%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #11 in FY2025; up 18 since Jul 2024–Jun 2025.
11	Technical Resources International, Inc. Top agencies HHS (Department of Health and Human Services)	$72,265,429	1.5%	Rank history: #9 in FY2021, #14 in FY2022, #3 in FY2023, #15 in FY2024 and #10 in FY2025; unchanged since Jul 2024–Jun 2025.
12	Westat, Inc. 2 awardees Top agencies HHS (Department of Health and Human Services)	$66,397,027	1.4%	Rank history: #8 in FY2021, #5 in FY2022, #19 in FY2023, #12 in FY2024 and #7 in FY2025; down 5 since Jul 2024–Jun 2025.
13	Cidara Therapeutics Inc. Top agencies HHS (Department of Health and Human Services)	$58,051,984	1.2%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; new, not ranked in Jul 2024–Jun 2025.
14	Public Health Vaccines LLC Top agencies HHS (Department of Health and Human Services)	$52,936,200	1.1%	Rank history: #61 in FY2021, not on the FY2022–FY2023 lists, #100 in FY2024 and #43 in FY2025; up 84 since Jul 2024–Jun 2025.
15	National Opinion Research Center Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$50,791,154	1.1%	Rank history: #20 in FY2021, #26 in FY2022, #33 in FY2023, #20 in FY2024 and #17 in FY2025; down 2 since Jul 2024–Jun 2025.
16	Battelle Memorial Institute 2 awardees Top agencies HHS (Department of Health and Human Services)	$47,988,542	1.0%	Rank history: #26 in FY2021, #60 in FY2022, #54 in FY2023, #33 in FY2024 and #14 in FY2025; up 4 since Jul 2024–Jun 2025.
17	Duke University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$41,663,225	0.9%	Rank history: #14 in FY2021, #13 in FY2022, #21 in FY2023, #17 in FY2024 and #18 in FY2025; down 2 since Jul 2024–Jun 2025.
18	Albert B. Sabin Vaccine Institute, Inc. (The) Top agencies HHS (Department of Health and Human Services)	$40,251,933	0.9%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #9 in FY2025; down 4 since Jul 2024–Jun 2025.
19	Abbott Laboratories Top agencies HHS (Department of Health and Human Services)	$39,911,560	0.9%	Rank history: not on the FY2021 list, #29 in FY2022, not on the FY2023–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
20	The Emmes Company, LLC Top agencies HHS (Department of Health and Human Services)	$38,939,853	0.8%	Rank history: #21 in FY2021, #21 in FY2022, #31 in FY2023, #22 in FY2024 and #20 in FY2025; up 5 since Jul 2024–Jun 2025.
21	Velico Medical, Inc. Top agencies HHS (Department of Health and Human Services)	$38,297,749	0.8%	Rank history: #37 in FY2021, #72 in FY2022, #25 in FY2023, #62 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
22	Emergent Biosolutions Inc. Through Emergent Product Development Gaithersburg Inc. Top agencies HHS (Department of Health and Human Services)	$30,000,000	0.6%	Rank history: not on the FY2021–FY2023 lists, #6 in FY2024 and #4 in FY2025; down 16 since Jul 2024–Jun 2025.
23	American Institutes for Research In the Behavioral Sciences Top agencies HHS (Department of Health and Human Services)	$29,007,119	0.6%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #48 in FY2025; up 21 since Jul 2024–Jun 2025.
24	UnitedHealth Group Incorporated Through The Lewin Group, Inc. Top agencies HHS (Department of Health and Human Services)	$27,974,718	0.6%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023, #24 in FY2024 and #34 in FY2025; down 3 since Jul 2024–Jun 2025.
25	University of Illinois 3 awardees Top agencies HHS (Department of Health and Human Services)	$27,899,339	0.6%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	Locus Biosciences Inc. Top agencies HHS (Department of Health and Human Services)	$25,895,865	0.6%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and #21 in FY2025; up 80 since Jul 2024–Jun 2025.
27	Safetraces Inc Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$25,543,758	0.5%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; new, not ranked in Jul 2024–Jun 2025.
28	American Type Culture Collection Top agencies HHS (Department of Health and Human Services)	$24,665,048	0.5%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; up 3 since Jul 2024–Jun 2025.
29	Psychogenics Inc. Top agencies HHS (Department of Health and Human Services)	$24,263,665	0.5%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #86 in FY2025; up 40 since Jul 2024–Jun 2025.
30	Biolytical Laboratories Inc. Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$23,692,418	0.5%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; up 95 since Jul 2024–Jun 2025.
31	Sri International Top agencies HHS (Department of Health and Human Services)	$22,335,414	0.5%	Rank history: #23 in FY2021, #27 in FY2022, #39 in FY2023, #31 in FY2024 and #49 in FY2025; up 2 since Jul 2024–Jun 2025.
32	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies DHA (Defense Health Agency) Army (Department of the Army) USUHS (DOD Uniformed Services University of the Health Sciences)	$22,293,273	0.5%	Rank history: #15 in FY2021, #42 in FY2022, #57 in FY2023, #25 in FY2024 and #29 in FY2025; up 8 since Jul 2024–Jun 2025.
33	Teledyne Flir Unmanned Ground Systems Inc Through Teledyne Brown Engineering, Inc. Top agencies Navy (Department of the Navy)	$22,187,746	0.5%	Rank history: #42 in FY2021, #82 in FY2022, #81 in FY2023, #49 in FY2024 and #65 in FY2025; up 22 since Jul 2024–Jun 2025.
34	Melinta Therapeutics, LLC Top agencies HHS (Department of Health and Human Services)	$21,335,789	0.5%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023, not on the FY2024 list and #33 in FY2025; up 104 since Jul 2024–Jun 2025.
35	Mayo Clinic Top agencies HHS (Department of Health and Human Services)	$21,076,616	0.5%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; new, not ranked in Jul 2024–Jun 2025.
36	Tempus AI, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$20,948,763	0.4%	Rank history: not on the FY2021–FY2024 lists and #70 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Trustees of Boston University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$20,383,051	0.4%	Rank history: #76 in FY2021, #24 in FY2022, #20 in FY2023, #29 in FY2024 and #16 in FY2025; down 21 since Jul 2024–Jun 2025.
38	Virginia Commonwealth University Health System Authority Through Virginia Polytechnic Institute & State University Top agencies HHS (Department of Health and Human Services)	$20,308,180	0.4%	Rank history: not on the FY2021–FY2024 lists and #37 in FY2025; new, not ranked in Jul 2024–Jun 2025.
39	Osivax Top agencies HHS (Department of Health and Human Services)	$20,229,361	0.4%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; new, not ranked in Jul 2024–Jun 2025.
40	Icahn School of Medicine At Mount Sinai Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$20,177,996	0.4%	Rank history: #18 in FY2021, #37 in FY2022, #28 in FY2023, #26 in FY2024 and #31 in FY2025; down 10 since Jul 2024–Jun 2025.
41	Prenosis, Inc. Top agencies HHS (Department of Health and Human Services)	$20,000,000	0.4%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; new, not ranked in Jul 2024–Jun 2025.
42	Poppy Health, Inc. Top agencies HHS (Department of Health and Human Services)	$19,601,012	0.4%	Rank history: not on the FY2021–FY2024 lists and #42 in FY2025; new, not ranked in Jul 2024–Jun 2025.
43	Ophirex, Inc. Top agencies DHA (Defense Health Agency)	$19,267,435	0.4%	Rank history: not on the FY2021 list, #65 in FY2022, not on the FY2023–FY2024 lists and #46 in FY2025; up 33 since Jul 2024–Jun 2025.
44	Johns Hopkins University 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$19,005,559	0.4%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; up 29 since Jul 2024–Jun 2025.
45	Kernal Biologics, Inc. Top agencies HHS (Department of Health and Human Services)	$18,177,254	0.4%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	Fisher Bioservices Inc. Top agencies HHS (Department of Health and Human Services)	$17,195,415	0.4%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and #53 in FY2025; down 12 since Jul 2024–Jun 2025.
47	North Dakota University System Through University of North Dakota Top agencies HHS (Department of Health and Human Services)	$16,952,932	0.4%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; new, not ranked in Jul 2024–Jun 2025.
48	Danaher Corporation 4 awardees, including Global Life Sciences Solutions USA LLC, Cepheid and Leica Microsystems Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$16,625,212	0.4%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; up 52 since Jul 2024–Jun 2025.
49	Kapili Services, LLC Top agencies DHA (Defense Health Agency) Navy (Department of the Navy)	$16,071,794	0.3%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; up 48 since Jul 2024–Jun 2025.
50	Flosonics Medical LLC Top agencies HHS (Department of Health and Human Services)	$15,002,035	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
51	University of Pittsburgh - of the Commonwealth System of Higher Education Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$14,855,299	0.3%	Rank history: #39 in FY2021, #66 in FY2022, #34 in FY2023, #51 in FY2024 and #30 in FY2025; up 6 since Jul 2024–Jun 2025.
52	Culmen International, LLC Top agencies DHA (Defense Health Agency) Navy (Department of the Navy)	$14,801,985	0.3%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; up 146 since Jul 2024–Jun 2025.
53	Seattle Children's Hospital Top agencies HHS (Department of Health and Human Services)	$14,477,489	0.3%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; up 88 since Jul 2024–Jun 2025.
54	PPD Development LP Top agencies HHS (Department of Health and Human Services)	$14,300,263	0.3%	Rank history: not on the FY2021–FY2025 lists; up 68 since Jul 2024–Jun 2025.
55	Revagenix Inc. Top agencies HHS (Department of Health and Human Services)	$14,231,864	0.3%	Rank history: not on the FY2021 list, #75 in FY2022, not on the FY2023 list, #50 in FY2024 and not on the FY2025 list; up 32 since Jul 2024–Jun 2025.
56	Marpam Pharma LLC Top agencies HHS (Department of Health and Human Services)	$14,131,077	0.3%	Rank history: not on the FY2021–FY2024 lists and #59 in FY2025; new, not ranked in Jul 2024–Jun 2025.
57	Abraxas Alliance Inc. Top agencies HHS (Department of Health and Human Services)	$14,059,017	0.3%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
58	Rho Federal Systems Division Inc. Top agencies HHS (Department of Health and Human Services)	$13,883,374	0.3%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; up 65 since Jul 2024–Jun 2025.
59	University of Georgia Research Foundation, Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$13,778,437	0.3%	Rank history: #36 in FY2021, #59 in FY2022, #71 in FY2023, #61 in FY2024 and #64 in FY2025; up 31 since Jul 2024–Jun 2025.
60	Hoffmann-La Roche Inc. Top agencies HHS (Department of Health and Human Services)	$13,750,000	0.3%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and #15 in FY2025; down 41 since Jul 2024–Jun 2025.
61	Fred Hutchinson Cancer Center Top agencies HHS (Department of Health and Human Services)	$13,719,446	0.3%	Rank history: not on the FY2021–FY2022 lists, #79 in FY2023, #59 in FY2024 and #62 in FY2025; down 7 since Jul 2024–Jun 2025.
62	Rafa Laboratories Ltd Top agencies HHS (Department of Health and Human Services)	$13,437,694	0.3%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$13,375,726	0.3%	Rank history: #100 in FY2021, #77 in FY2022, #73 in FY2023, #23 in FY2024 and #25 in FY2025; down 39 since Jul 2024–Jun 2025.
64	Coriell Institute for Medical Research, Inc. Top agencies HHS (Department of Health and Human Services)	$13,355,032	0.3%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; up 128 since Jul 2024–Jun 2025.
65	ST Jude Children's Research Hospital Inc. Top agencies HHS (Department of Health and Human Services)	$13,327,296	0.3%	Rank history: #32 in FY2021, #67 in FY2022, #55 in FY2023, #45 in FY2024 and #54 in FY2025; down 33 since Jul 2024–Jun 2025.
66	University of Maryland, Baltimore Top agencies HHS (Department of Health and Human Services)	$13,317,620	0.3%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; up 65 since Jul 2024–Jun 2025.
67	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$13,162,209	0.3%	Rank history: not on the FY2021 list, #79 in FY2022, #75 in FY2023, #55 in FY2024 and #75 in FY2025; down 16 since Jul 2024–Jun 2025.
68	Ossium Health Inc. Top agencies HHS (Department of Health and Human Services)	$12,393,959	0.3%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and not on the FY2025 list; down 30 since Jul 2024–Jun 2025.
69	Tessera Therapeutics, Inc. Top agencies HHS (Department of Health and Human Services)	$11,891,248	0.3%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; new, not ranked in Jul 2024–Jun 2025.
70	Sanofi Pasteur Inc. Through Sanofi Vaccines US Inc. Top agencies HHS (Department of Health and Human Services)	$11,857,338	0.3%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #19 in FY2025; down 24 since Jul 2024–Jun 2025.
71	The Regents of the University of California. San Francisco Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$11,518,086	0.2%	Rank history: not on the FY2021–FY2024 lists and #39 in FY2025; down 15 since Jul 2024–Jun 2025.
72	The Trustees of the University of Pennsylvania Top agencies HHS (Department of Health and Human Services)	$11,373,298	0.2%	Rank history: #43 in FY2021, #39 in FY2022, #62 in FY2023, #68 in FY2024 and #94 in FY2025; down 5 since Jul 2024–Jun 2025.
73	Crossject SA Top agencies HHS (Department of Health and Human Services)	$11,291,005	0.2%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; new, not ranked in Jul 2024–Jun 2025.
74	Immunovec, Inc. Top agencies HHS (Department of Health and Human Services)	$11,049,460	0.2%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	Wake Forest University Health Sciences Top agencies HHS (Department of Health and Human Services)	$10,837,586	0.2%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; up 45 since Jul 2024–Jun 2025.
76	University of North Carolina At Chapel Hill Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$10,563,662	0.2%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #26 in FY2025; down 49 since Jul 2024–Jun 2025.
77	Deloitte Through Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services)	$10,538,088	0.2%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #90 in FY2025; down 17 since Jul 2024–Jun 2025.
78	Goldbelt C6, LLC Top agencies DHA (Defense Health Agency)	$10,518,283	0.2%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; down 19 since Jul 2024–Jun 2025.
79	Harvard Pilgrim Health Care, Inc. Top agencies HHS (Department of Health and Human Services)	$10,483,494	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
80	University of California, LOS Angeles Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$10,393,807	0.2%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; up 41 since Jul 2024–Jun 2025.
81	Cellphire, Inc. Top agencies DHA (Defense Health Agency)	$10,364,155	0.2%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and #55 in FY2025; down 29 since Jul 2024–Jun 2025.
82	University of Southern California Top agencies HHS (Department of Health and Human Services)	$9,976,549	0.2%	Rank history: not on the FY2021–FY2025 lists; up 33 since Jul 2024–Jun 2025.
83	Bioqual, Inc. Top agencies HHS (Department of Health and Human Services)	$9,899,714	0.2%	Rank history: not on the FY2021 list, #80 in FY2022, #69 in FY2023, #76 in FY2024 and #87 in FY2025; up 1 since Jul 2024–Jun 2025.
84	Regents of the University of Michigan Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$9,628,294	0.2%	Rank history: #94 in FY2021, #81 in FY2022, #87 in FY2023, #83 in FY2024 and #92 in FY2025; down 7 since Jul 2024–Jun 2025.
85	Lacristat LLC Top agencies HHS (Department of Health and Human Services)	$9,628,264	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
86	Emory University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$9,526,504	0.2%	Rank history: #59 in FY2021, #97 in FY2022, #77 in FY2023, #71 in FY2024 and #61 in FY2025; down 37 since Jul 2024–Jun 2025.
87	Charles River Laboratories International Inc. Through Charles River Laboratories, Inc. Top agencies HHS (Department of Health and Human Services)	$9,500,123	0.2%	Rank history: not on the FY2021–FY2023 lists, #93 in FY2024 and #68 in FY2025; down 25 since Jul 2024–Jun 2025.
88	The University of Texas Health Science Center At San Antonio Top agencies HHS (Department of Health and Human Services)	$9,484,338	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
89	The Trustees of Columbia University In the City of New York Top agencies HHS (Department of Health and Human Services)	$9,364,971	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
90	National Jewish Health Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$9,323,544	0.2%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #81 in FY2025; down 19 since Jul 2024–Jun 2025.
91	University of Utah Top agencies HHS (Department of Health and Human Services)	$9,308,678	0.2%	Rank history: #95 in FY2021, #90 in FY2022, #78 in FY2023, #57 in FY2024 and #82 in FY2025; down 25 since Jul 2024–Jun 2025.
92	Theradex Systems, Inc. Top agencies HHS (Department of Health and Human Services)	$9,307,613	0.2%	Rank history: not on the FY2021–FY2023 lists, #89 in FY2024 and #91 in FY2025; down 7 since Jul 2024–Jun 2025.
93	GE Medical Systems Information Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$8,974,230	0.2%	Rank history: not on the FY2021–FY2022 lists, #50 in FY2023, #67 in FY2024 and #23 in FY2025; down 76 since Jul 2024–Jun 2025.
94	Indivior Inc. Top agencies HHS (Department of Health and Human Services)	$8,700,000	0.2%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and #88 in FY2025; down 26 since Jul 2024–Jun 2025.
95	Medtech Innovator Top agencies HHS (Department of Health and Human Services)	$8,628,007	0.2%	Rank history: not on the FY2021–FY2025 lists; up 152 since Jul 2024–Jun 2025.
96	Orexo AB Through Orexo US Inc. Top agencies HHS (Department of Health and Human Services)	$8,450,715	0.2%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; new, not ranked in Jul 2024–Jun 2025.
97	Strm.bio Incorporated Top agencies HHS (Department of Health and Human Services)	$8,375,271	0.2%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; new, not ranked in Jul 2024–Jun 2025.
98	Alpha Genesis Inc. Top agencies HHS (Department of Health and Human Services)	$8,305,442	0.2%	Rank history: not on the FY2021–FY2023 lists, #82 in FY2024 and not on the FY2025 list; down 15 since Jul 2024–Jun 2025.
99	TDA Research, Inc. Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$8,099,882	0.2%	Rank history: not on the FY2021–FY2025 lists; up 180 since Jul 2024–Jun 2025.
100	Northeastern University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$7,998,548	0.2%	Rank history: not on the FY2021–FY2025 lists; up 316 since Jul 2024–Jun 2025.

Rankings for the codes under PSC AN

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 $4.67 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.
• 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 Jul 2024–Jun 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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