Top 100 Contractors in PSC AN11: Health R&D Services; Health Care Services; Basic Research, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	The Mitre Corporation Top agencies HHS (Department of Health and Human Services)	$74,888,454	18.3%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	Westat, Inc. Top agencies HHS (Department of Health and Human Services)	$55,119,805	13.5%	Rank history: #2 in FY2021, #2 in FY2022, #8 in FY2023, #1 in FY2024 and #2 in FY2025; unchanged since Aug 2024–Jul 2025.
3	PGI Holding Corporation Through Psychogenics Inc. Top agencies HHS (Department of Health and Human Services)	$24,263,665	5.9%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; new, not ranked in Aug 2024–Jul 2025.
4	Abraxas Alliance Inc. Top agencies HHS (Department of Health and Human Services)	$14,059,017	3.4%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; new, not ranked in Aug 2024–Jul 2025.
5	Technical Resources International, Inc. Top agencies HHS (Department of Health and Human Services)	$9,919,423	2.4%	Rank history: #10 in FY2021, #11 in FY2022, #3 in FY2023, #3 in FY2024 and #7 in FY2025; down 1 since Aug 2024–Jul 2025.
6	Charles River Laboratories International Inc. Through Charles River Laboratories, Inc. Top agencies HHS (Department of Health and Human Services)	$9,428,450	2.3%	Rank history: #15 in FY2021, #13 in FY2022, #15 in FY2023, #9 in FY2024 and #4 in FY2025; up 4 since Aug 2024–Jul 2025.
7	The Emmes Company, LLC Top agencies HHS (Department of Health and Human Services)	$9,396,394	2.3%	Rank history: #6 in FY2021, #6 in FY2022, #12 in FY2023, #4 in FY2024 and #5 in FY2025; down 4 since Aug 2024–Jul 2025.
8	Indivior Inc. Top agencies HHS (Department of Health and Human Services)	$8,700,000	2.1%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #10 in FY2025; up 4 since Aug 2024–Jul 2025.
9	The Broad Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$7,404,200	1.8%	Rank history: not on the FY2021 list, #54 in FY2022, #17 in FY2023, #15 in FY2024 and #15 in FY2025; up 7 since Aug 2024–Jul 2025.
10	Duke University Top agencies HHS (Department of Health and Human Services)	$7,004,976	1.7%	Rank history: #47 in FY2021, #23 in FY2022, #24 in FY2023, #36 in FY2024 and #17 in FY2025; up 11 since Aug 2024–Jul 2025.
11	Thermo Fisher Scientific Inc. Through Fisher Bioservices Inc. Top agencies HHS (Department of Health and Human Services)	$6,396,344	1.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
12	University of Texas System 3 awardees, including University of Texas Medical Branch At Galveston, The University of Texas Health Science Center At San Antonio and The University of Texas Southwestern Medical Center Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$6,330,470	1.5%	Rank history: #28 in FY2021, #33 in FY2022, #71 in FY2023, not on the FY2024 list and #59 in FY2025; new, not ranked in Aug 2024–Jul 2025.
13	Biofire Defense LLC Through Advanced Bioscience Laboratories, Inc. Top agencies HHS (Department of Health and Human Services)	$6,087,029	1.5%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #34 in FY2025; up 45 since Aug 2024–Jul 2025.
14	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) USUHS (DOD Uniformed Services University of the Health Sciences)	$5,936,787	1.5%	Rank history: not on the FY2021 list, #19 in FY2022, #18 in FY2023, #6 in FY2024 and #16 in FY2025; up 3 since Aug 2024–Jul 2025.
15	University of Utah Top agencies HHS (Department of Health and Human Services)	$5,742,979	1.4%	Rank history: not on the FY2021 list, #48 in FY2022, #33 in FY2023, #19 in FY2024 and #20 in FY2025; up 5 since Aug 2024–Jul 2025.
16	Georgia TECH Research Corp Top agencies HHS (Department of Health and Human Services)	$4,977,529	1.2%	Rank history: not on the FY2021 list, #85 in FY2022, not on the FY2023–FY2024 lists and #22 in FY2025; new, not ranked in Aug 2024–Jul 2025.
17	Northwestern University 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$4,799,578	1.2%	Rank history: not on the FY2021 list, #28 in FY2022, #31 in FY2023, #23 in FY2024 and #25 in FY2025; up 7 since Aug 2024–Jul 2025.
18	Seattle Children's Hospital Top agencies HHS (Department of Health and Human Services)	$4,771,499	1.2%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; up 9 since Aug 2024–Jul 2025.
19	Aptive HTG LLC Top agencies VA (Department of Veterans Affairs)	$4,410,044	1.1%	Rank history: not on the FY2021–FY2023 lists, #95 in FY2024 and #19 in FY2025; up 30 since Aug 2024–Jul 2025.
20	Regents of the University of Michigan Top agencies HHS (Department of Health and Human Services)	$4,366,389	1.1%	Rank history: #52 in FY2021, #25 in FY2022, #28 in FY2023, #25 in FY2024 and #28 in FY2025; up 9 since Aug 2024–Jul 2025.
21	University of California Irvine 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$4,233,854	1.0%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 49 since Aug 2024–Jul 2025.
22	The Administrators of Tulane Educational Fund Top agencies HHS (Department of Health and Human Services)	$4,119,197	1.0%	Rank history: #30 in FY2021, #36 in FY2022, #48 in FY2023, #97 in FY2024 and #27 in FY2025; up 19 since Aug 2024–Jul 2025.
23	Booz Allen Hamilton Holding Corporation Through Booz Allen Hamilton Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$4,072,819	1.0%	Rank history: #27 in FY2021, #14 in FY2022, #14 in FY2023, #7 in FY2024 and #14 in FY2025; down 17 since Aug 2024–Jul 2025.
24	MRIGLOBAL Top agencies HHS (Department of Health and Human Services)	$3,767,500	0.9%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #50 in FY2025; up 23 since Aug 2024–Jul 2025.
25	Appili Therapeutics USA Inc. Top agencies HHS (Department of Health and Human Services)	$3,605,418	0.9%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; new, not ranked in Aug 2024–Jul 2025.
26	University System of Maryland Through University of Maryland, Baltimore Top agencies HHS (Department of Health and Human Services)	$3,570,252	0.9%	Rank history: #19 in FY2021, #20 in FY2022, #40 in FY2023, not on the FY2024 list and #45 in FY2025; new, not ranked in Aug 2024–Jul 2025.
27	Culmen International, LLC Top agencies DHA (Defense Health Agency)	$3,375,918	0.8%	Rank history: not on the FY2021–FY2024 lists and #78 in FY2025; new, not ranked in Aug 2024–Jul 2025.
28	The Research Foundation for the State University of New York 2 awardees Top agencies HHS (Department of Health and Human Services)	$3,252,402	0.8%	Rank history: not on the FY2021 list, #81 in FY2022, #37 in FY2023, #55 in FY2024 and #40 in FY2025; up 15 since Aug 2024–Jul 2025.
29	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$3,154,299	0.8%	Rank history: #17 in FY2021, #30 in FY2022, #23 in FY2023, #24 in FY2024 and #29 in FY2025; down 1 since Aug 2024–Jul 2025.
30	DNA Hive LLC Top agencies HHS (Department of Health and Human Services)	$3,090,715	0.8%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Emory University Top agencies HHS (Department of Health and Human Services)	$3,072,912	0.8%	Rank history: #42 in FY2021, #44 in FY2022, #52 in FY2023, #40 in FY2024 and #35 in FY2025; up 8 since Aug 2024–Jul 2025.
32	Infinity Biologix LLC Top agencies HHS (Department of Health and Human Services)	$2,957,934	0.7%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; up 10 since Aug 2024–Jul 2025.
33	University of Oklahoma Top agencies HHS (Department of Health and Human Services)	$2,948,073	0.7%	Rank history: #46 in FY2021, #71 in FY2022, #43 in FY2023, #27 in FY2024 and #39 in FY2025; new, not ranked in Aug 2024–Jul 2025.
34	Abss Solutions Inc. Top agencies DHA (Defense Health Agency)	$2,840,895	0.7%	Rank history: #4 in FY2021, #5 in FY2022, not on the FY2023 list, #5 in FY2024 and #23 in FY2025; down 27 since Aug 2024–Jul 2025.
35	Information Management Services, Inc. Top agencies HHS (Department of Health and Human Services)	$2,369,434	0.6%	Rank history: #74 in FY2021, #95 in FY2022, #61 in FY2023, #43 in FY2024 and #42 in FY2025; up 13 since Aug 2024–Jul 2025.
36	The University of Iowa Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,359,345	0.6%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; up 49 since Aug 2024–Jul 2025.
37	Mass General Brigham Incorporated Through The Mclean Hospital Corporation Top agencies HHS (Department of Health and Human Services)	$2,191,703	0.5%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #43 in FY2025; down 18 since Aug 2024–Jul 2025.
38	Medigen, Inc. Top agencies HHS (Department of Health and Human Services)	$2,181,107	0.5%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Aug 2024–Jul 2025.
39	Portable Diagnostic Systems Inc. Top agencies HHS (Department of Health and Human Services)	$2,000,000	0.5%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Aug 2024–Jul 2025.
40	University of Sydney Top agencies HHS (Department of Health and Human Services)	$2,000,000	0.5%	Rank history: not on the FY2021 list, #63 in FY2022, #47 in FY2023, #37 in FY2024 and #47 in FY2025; down 5 since Aug 2024–Jul 2025.
41	Greater LOS Angeles Veterans Research and Education Foundation Top agencies HHS (Department of Health and Human Services)	$1,890,851	0.5%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, #59 in FY2024 and #75 in FY2025; up 9 since Aug 2024–Jul 2025.
42	University of Pittsburgh - of the Commonwealth System of Higher Education Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,837,146	0.4%	Rank history: #20 in FY2021, #57 in FY2022, #25 in FY2023, #72 in FY2024 and #67 in FY2025; down 4 since Aug 2024–Jul 2025.
43	Battelle Memorial Institute Top agencies HHS (Department of Health and Human Services)	$1,826,482	0.4%	Rank history: #23 in FY2021, not on the FY2022 list, #65 in FY2023, #88 in FY2024 and #54 in FY2025; up 35 since Aug 2024–Jul 2025.
44	National Academy of Sciences Top agencies DHA (Defense Health Agency) Army (Department of the Army) VA (Department of Veterans Affairs)	$1,798,510	0.4%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023, #49 in FY2024 and #32 in FY2025; down 12 since Aug 2024–Jul 2025.
45	Lovelace Biomedical Research Institute Top agencies HHS (Department of Health and Human Services)	$1,796,245	0.4%	Rank history: #33 in FY2021, #52 in FY2022, #55 in FY2023 and not on the FY2024–FY2025 lists; up 116 since Aug 2024–Jul 2025.
46	Precision for Medicine, Inc. Top agencies HHS (Department of Health and Human Services)	$1,772,198	0.4%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #6 in FY2025; down 37 since Aug 2024–Jul 2025.
47	University of North Carolina At Chapel Hill Top agencies HHS (Department of Health and Human Services)	$1,705,066	0.4%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; new, not ranked in Aug 2024–Jul 2025.
48	University of Miami Top agencies HHS (Department of Health and Human Services)	$1,660,243	0.4%	Rank history: #66 in FY2021, #99 in FY2022, #76 in FY2023, not on the FY2024 list and #70 in FY2025; new, not ranked in Aug 2024–Jul 2025.
49	Sri International Top agencies HHS (Department of Health and Human Services)	$1,596,046	0.4%	Rank history: #16 in FY2021, #12 in FY2022, #16 in FY2023, #18 in FY2024 and not on the FY2025 list; down 24 since Aug 2024–Jul 2025.
50	Coriell Institute for Medical Research, Inc. Top agencies HHS (Department of Health and Human Services)	$1,557,284	0.4%	Rank history: #49 in FY2021, #64 in FY2022, #49 in FY2023, #60 in FY2024 and #66 in FY2025; up 13 since Aug 2024–Jul 2025.
51	Emergingdx Inc. Top agencies DHA (Defense Health Agency)	$1,549,957	0.4%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; up 90 since Aug 2024–Jul 2025.
52	TDA Research, Inc. Top agencies DHA (Defense Health Agency)	$1,549,922	0.4%	Rank history: #41 in FY2021, not on the FY2022–FY2024 lists and #69 in FY2025; up 95 since Aug 2024–Jul 2025.
53	Icahn School of Medicine At Mount Sinai Top agencies HHS (Department of Health and Human Services)	$1,499,021	0.4%	Rank history: not on the FY2021–FY2023 lists, #65 in FY2024 and #61 in FY2025; down 16 since Aug 2024–Jul 2025.
54	Virginia Commonwealth University Top agencies HHS (Department of Health and Human Services)	$1,485,280	0.4%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023, #52 in FY2024 and #55 in FY2025; down 2 since Aug 2024–Jul 2025.
55	Academy Health Top agencies VA (Department of Veterans Affairs)	$1,364,210	0.3%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and #93 in FY2025; up 14 since Aug 2024–Jul 2025.
56	International Fabric Machines Inc. Top agencies DHA (Defense Health Agency)	$1,298,458	0.3%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; new, not ranked in Aug 2024–Jul 2025.
57	Enumage Inc. Top agencies DHA (Defense Health Agency)	$1,276,300	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
58	Rutgers, the State University 2 awardees, including Rutgers the State University of New Jersey Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,100,160	0.3%	Rank history: #34 in FY2021, #43 in FY2022, #54 in FY2023, #41 in FY2024 and #72 in FY2025; new, not ranked in Aug 2024–Jul 2025.
59	The University of Queensland Through Vaxxas PTY Ltd Top agencies HHS (Department of Health and Human Services)	$1,072,500	0.3%	Rank history: not on the FY2021–FY2022 lists, #26 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
60	University of Wisconsin System Top agencies HHS (Department of Health and Human Services)	$1,003,174	0.2%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; up 15 since Aug 2024–Jul 2025.
61	Bristol Bay Native Corporation Through Eagle Integrated Services, LLC Top agencies DHA (Defense Health Agency)	$997,062	0.2%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; new, not ranked in Aug 2024–Jul 2025.
62	American Type Culture Collection Top agencies HHS (Department of Health and Human Services)	$969,833	0.2%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; down 7 since Aug 2024–Jul 2025.
63	Trustees of Boston University 2 awardees Top agencies VA (Department of Veterans Affairs)	$965,099	0.2%	Rank history: not on the FY2021 list, #58 in FY2022, #27 in FY2023, not on the FY2024 list and #94 in FY2025; up 132 since Aug 2024–Jul 2025.
64	Embleema Inc. Top agencies HHS (Department of Health and Human Services)	$835,000	0.2%	Rank history: #64 in FY2021, #56 in FY2022, #83 in FY2023, #54 in FY2024 and #79 in FY2025; up 24 since Aug 2024–Jul 2025.
65	Pharmacology Discovery Services Taiwan, Ltd. Top agencies HHS (Department of Health and Human Services)	$790,496	0.2%	Rank history: #78 in FY2021, not on the FY2022–FY2023 lists, #92 in FY2024 and not on the FY2025 list; up 97 since Aug 2024–Jul 2025.
66	Missouri Breaks Industries Research, Inc. Top agencies HHS (Department of Health and Human Services)	$763,884	0.2%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023, #66 in FY2024 and #83 in FY2025; up 20 since Aug 2024–Jul 2025.
67	Aapharmasyn LLC Top agencies HHS (Department of Health and Human Services)	$728,079	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
68	The Leland Stanford Junior University Top agencies VA (Department of Veterans Affairs)	$713,976	0.2%	Rank history: not on the FY2021 list, #60 in FY2022, #30 in FY2023, #13 in FY2024 and #37 in FY2025; down 50 since Aug 2024–Jul 2025.
69	La Jolla Institute for Immunology Top agencies HHS (Department of Health and Human Services)	$699,999	0.2%	Rank history: #44 in FY2021, #46 in FY2022, #50 in FY2023, #30 in FY2024 and #31 in FY2025; down 38 since Aug 2024–Jul 2025.
70	DLH Holdings Corp Through Social & Scientific Systems, Inc. Top agencies HHS (Department of Health and Human Services)	$616,251	0.2%	Rank history: not on the FY2021–FY2025 lists; up 43 since Aug 2024–Jul 2025.
71	Altasciences Clinical Kansas Inc. Top agencies HHS (Department of Health and Human Services)	$591,069	0.1%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; down 7 since Aug 2024–Jul 2025.
72	Touro College Through New York Medical College Top agencies HHS (Department of Health and Human Services)	$576,525	0.1%	Rank history: not on the FY2021 list, #90 in FY2022, not on the FY2023–FY2024 lists and #86 in FY2025; new, not ranked in Aug 2024–Jul 2025.
73	Zansors LLC Top agencies DHA (Defense Health Agency)	$550,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; new, not ranked in Aug 2024–Jul 2025.
74	Medstar Health Research Institute Inc. Top agencies HHS (Department of Health and Human Services)	$536,494	0.1%	Rank history: not on the FY2021–FY2025 lists; up 21 since Aug 2024–Jul 2025.
75	Bering Straits Native Corporation Through Laulima Government Solutions, LLC Top agencies DHA (Defense Health Agency)	$534,964	0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Aug 2024–Jul 2025.
76	Shontz Allison Top agencies VA (Department of Veterans Affairs)	$523,214	0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 22 since Aug 2024–Jul 2025.
77	Chenda Polyclinic Company Limited Top agencies DHA (Defense Health Agency)	$422,408	0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; up 17 since Aug 2024–Jul 2025.
78	Ciconix, LLC Top agencies DHA (Defense Health Agency)	$419,163	0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; new, not ranked in Aug 2024–Jul 2025.
79	Trustees of Tufts College Top agencies HHS (Department of Health and Human Services)	$387,366	0.1%	Rank history: #93 in FY2021, not on the FY2022–FY2024 lists and #97 in FY2025; new, not ranked in Aug 2024–Jul 2025.
80	Board of Regents of the University of Nebraska Top agencies HHS (Department of Health and Human Services)	$358,733	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
81	ASO Therapeutics, Inc. Top agencies HHS (Department of Health and Human Services)	$354,991	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
82	Tenaci-T Therapeutics LLC Top agencies HHS (Department of Health and Human Services)	$352,621	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
83	Icon Government and Public Health Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$346,182	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Aug 2024–Jul 2025.
84	University of Massachusetts Lowell Top agencies VA (Department of Veterans Affairs)	$328,365	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
85	Hartford Hospital Top agencies HHS (Department of Health and Human Services)	$324,978	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
86	The Pennsylvania State University Top agencies HHS (Department of Health and Human Services)	$311,680	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
87	Guild Associates Inc. Top agencies HHS (Department of Health and Human Services)	$306,718	0.1%	Rank history: not on the FY2021–FY2025 lists; up 38 since Aug 2024–Jul 2025.
88	High Throughput Biology Inc. Top agencies HHS (Department of Health and Human Services)	$306,100	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
89	Eurofins Discovery Services North America, LLC Top agencies HHS (Department of Health and Human Services)	$300,759	0.1%	Rank history: not on the FY2021 list, #76 in FY2022, not on the FY2023 list, #90 in FY2024 and not on the FY2025 list; down 7 since Aug 2024–Jul 2025.
90	Xtory, Inc. Top agencies DHA (Defense Health Agency)	$286,609	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
91	Digim Solution LLC Top agencies HHS (Department of Health and Human Services)	$250,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
92	Applied Nanotech, Inc. Top agencies DHA (Defense Health Agency)	$249,962	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
93	GU Rnpts Rmiech Top agencies HHS (Department of Health and Human Services)	$212,883	0.1%	Rank history: not on the FY2021–FY2025 lists; up 66 since Aug 2024–Jul 2025.
94	Deloitte Through Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services)	$200,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 141 since Aug 2024–Jul 2025.
95	Oregon Health & Science University Top agencies VA (Department of Veterans Affairs)	$193,280	<0.1%	Rank history: #55 in FY2021, #78 in FY2022, #70 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
96	Colorado State University Top agencies HHS (Department of Health and Human Services)	$184,821	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 9 since Aug 2024–Jul 2025.
97	University of Georgia Research Foundation, Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$180,123	<0.1%	Rank history: #57 in FY2021, not on the FY2022 list, #93 in FY2023, #81 in FY2024 and #57 in FY2025; down 41 since Aug 2024–Jul 2025.
98	Kaiser Foundation Hospitals Top agencies HHS (Department of Health and Human Services)	$176,438	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 1 since Aug 2024–Jul 2025.
99	Afognak Native Corporation Through Alutiiq Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$170,445	<0.1%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; down 73 since Aug 2024–Jul 2025.
100	Louisiana State University Health Sciences Center New Orleans Top agencies HHS (Department of Health and Human Services)	$161,577	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 69 since 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 $409 million 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.

Quick answers