Top 100 Contractors in PSC AN: Health R&D Services, FY2021

Name: Top 100 Contractors in PSC AN: Health R&D Services, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 49% of FY2021 PSC AN contract dollars

Contract obligations: $4,402,245,270 Net of deobligations, by contracts coded PSC AN or a code under it
Contractors: 799 Parent companies with an obligation
Largest contractor: Leidos Holdings, Inc. $436 million, 8.5% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

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)	$436,069,244	8.5%	Rank history: #1 in FY2022, #2 in FY2023, #3 in FY2024 and #1 in FY2025; up 2 since FY2020.
2	Modernatx Inc. Top agencies HHS (Department of Health and Human Services)	$435,113,565	8.5%	Rank history: #3 in FY2022, #29 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
3	PPD Development L.P. Top agencies HHS (Department of Health and Human Services)	$416,025,281	8.1%	Rank history: #6 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
4	Emergent Biosolutions Inc. 6 awardees, including Emergent Product Development Gaithersburg Inc., Emergent Biosolutions Canada Inc. and Emergent Virology, LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$411,172,090	8.0%	Rank history: not on the FY2022 list, #13 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
5	Medical Technology Enterprise Consortium Top agencies Army (Department of the Army) Navy (Department of the Navy) USUHS (DOD Uniformed Services University of the Health Sciences)	$249,129,113	4.9%	Rank history: #4 in FY2022, #7 in FY2023, #4 in FY2024 and #2 in FY2025; up 3 since FY2020.
6	The Mitre Corporation 2 awardees Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) CPSC (Consumer Product Safety Commission)	$168,110,565	3.3%	Rank history: #7 in FY2022, #16 in FY2023, #8 in FY2024 and #6 in FY2025; up 3 since FY2020.
7	Siga Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$112,567,056	2.2%	Rank history: #32 in FY2022, #12 in FY2023, #11 in FY2024 and #13 in FY2025; up 5 since FY2020.
8	Westat, Inc. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$101,890,978	2.0%	Rank history: #5 in FY2022, #19 in FY2023, #12 in FY2024 and #7 in FY2025; up 6 since FY2020.
9	Technical Resources International, Inc. Top agencies HHS (Department of Health and Human Services)	$90,231,310	1.8%	Rank history: #14 in FY2022, #3 in FY2023, #15 in FY2024 and #10 in FY2025; up 1 since FY2020.
10	Resilience Government Services, Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$76,661,788	1.5%	Rank history: #22 in FY2022, #40 in FY2023, #21 in FY2024 and not on the FY2025 list; up 1 since FY2020.
11	ABT Global LLC 2 awardees Top agencies USAID (US Agency for International Development) HHS (Department of Health and Human Services)	$65,189,721	1.3%	Rank history: #9 in FY2022, #22 in FY2023, #16 in FY2024 and #32 in FY2025; up 4 since FY2020.
12	Danaher Corporation 4 awardees, including Cepheid, Beckman Coulter Inc. and Integrated DNA Technologies, Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$64,767,215	1.3%	Rank history: #63 in FY2022, #59 in FY2023 and not on the FY2024–FY2025 lists; up 175 since FY2020.
13	Allucent Government Services (Us) LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$52,106,180	1.0%	Rank history: not on the FY2022 list, #5 in FY2023, #80 in FY2024 and not on the FY2025 list; up 35 since FY2020.
14	Duke University 2 awardees, including Duke University Health System, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$50,229,410	1.0%	Rank history: #13 in FY2022, #21 in FY2023, #17 in FY2024 and #18 in FY2025; up 2 since FY2020.
15	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$48,152,200	0.9%	Rank history: #42 in FY2022, #57 in FY2023, #25 in FY2024 and #29 in FY2025; up 7 since FY2020.
16	The Johns Hopkins University Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$48,139,055	0.9%	Rank history: #34 in FY2022, #46 in FY2023, #34 in FY2024 and not on the FY2025 list; up 1 since FY2020.
17	Leidos Biomedical Research Inc. Top agencies HHS (Department of Health and Human Services)	$43,250,022	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
18	Icahn School of Medicine at Mount Sinai Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$37,767,596	0.7%	Rank history: #37 in FY2022, #28 in FY2023, #26 in FY2024 and #31 in FY2025; up 7 since FY2020.
19	K W Tunnell Company Inc. Through Tunnell Consulting Inc. Top agencies HHS (Department of Health and Human Services)	$36,718,618	0.7%	Rank history: #23 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
20	National Opinion Research Center Top agencies HHS (Department of Health and Human Services)	$35,330,620	0.7%	Rank history: #26 in FY2022, #33 in FY2023, #20 in FY2024 and #17 in FY2025; up 12 since FY2020.
21	The Emmes Company, LLC Top agencies HHS (Department of Health and Human Services)	$34,792,750	0.7%	Rank history: #21 in FY2022, #31 in FY2023, #22 in FY2024 and #20 in FY2025; up 9 since FY2020.
22	Sabin Albert B Vaccine Inst Through Albert B. Sabin Vaccine Institute, Inc. (The) Top agencies HHS (Department of Health and Human Services)	$34,506,940	0.7%	Rank history: #40 in FY2022, #14 in FY2023 and not on the FY2024–FY2025 lists; up 23 since FY2020.
23	Sri International Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$32,596,009	0.6%	Rank history: #27 in FY2022, #39 in FY2023, #31 in FY2024 and #49 in FY2025; down 4 since FY2020.
24	International Aids Vaccine Initiative Inc. Top agencies HHS (Department of Health and Human Services)	$31,625,461	0.6%	Rank history: #50 in FY2022, #27 in FY2023 and not on the FY2024–FY2025 lists; up 277 since FY2020.
25	Just-Evotec Biologics Inc. 2 awardees, including Evotec US Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$28,833,511	0.6%	Rank history: not on the FY2022–FY2025 lists; up 22 since FY2020.
26	Battelle Memorial Institute 2 awardees, including Battelle National Biodefense Institute, LLC Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$28,297,103	0.6%	Rank history: #60 in FY2022, #54 in FY2023, #33 in FY2024 and #14 in FY2025; up 1 since FY2020.
27	Abss Solutions Inc. Top agencies USAF (Department of the Air Force)	$27,644,122	0.5%	Rank history: #25 in FY2022, not on the FY2023 list, #53 in FY2024 and not on the FY2025 list; up 45 since FY2020.
28	Venatorx Pharmaceuticals Inc. Top agencies HHS (Department of Health and Human Services)	$26,401,912	0.5%	Rank history: #38 in FY2022, #35 in FY2023, #52 in FY2024 and not on the FY2025 list; down 4 since FY2020.
29	Siemens Aktiengesellschaft Through Siemens Healthcare Diagnostics Inc. Top agencies HHS (Department of Health and Human Services)	$26,000,000	0.5%	Rank history: not on the FY2022–FY2025 lists; up 39 since FY2020.
30	Chemonics International, Inc. Top agencies USAID (US Agency for International Development)	$24,600,693	0.5%	Rank history: #41 in FY2022, #63 in FY2023 and not on the FY2024–FY2025 lists; up 11 since FY2020.
31	Seattle Children'S Hospital Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$24,012,872	0.5%	Rank history: #35 in FY2022, #41 in FY2023, #28 in FY2024 and not on the FY2025 list; up 19 since FY2020.
32	ST Jude Children's Research Hospital Inc. Top agencies HHS (Department of Health and Human Services)	$23,342,141	0.5%	Rank history: #67 in FY2022, #55 in FY2023, #45 in FY2024 and #54 in FY2025; up 6 since FY2020.
33	Emergent Manufacturing Operations Baltimore LLC Top agencies HHS (Department of Health and Human Services)	$22,815,456	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
34	Kaiser Foundation Health Plan of Washington 2 awardees, including Kaiser Foundation Hospitals Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$21,771,702	0.4%	Rank history: #43 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; up 81 since FY2020.
35	State of California Controllers Office 13 awardees, including The Regents of the University of California. San Francisco, University of California, LOS Angeles and University of California, San Diego Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$21,457,590	0.4%	Rank history: #49 in FY2022, #38 in FY2023 and not on the FY2024–FY2025 lists; up 39 since FY2020.
36	University of Georgia Research Foundation, Inc. Top agencies HHS (Department of Health and Human Services)	$20,322,803	0.4%	Rank history: #59 in FY2022, #71 in FY2023, #61 in FY2024 and #64 in FY2025; up 20 since FY2020.
37	Velico Medical, Inc. Top agencies HHS (Department of Health and Human Services)	$19,937,320	0.4%	Rank history: #72 in FY2022, #25 in FY2023, #62 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
38	SNA International LLC Top agencies DHA (Defense Health Agency)	$19,885,348	0.4%	Rank history: #51 in FY2022, #60 in FY2023, #40 in FY2024 and #35 in FY2025; up 6 since FY2020.
39	University of Pittsburgh - of the Commonwealth System of Higher Education Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$19,640,238	0.4%	Rank history: #66 in FY2022, #34 in FY2023, #51 in FY2024 and #30 in FY2025; up 14 since FY2020.
40	General Dynamics Corporation 3 awardees, including General Dynamics Information Technology, Inc. and Dynport Vaccine Company LLC Top agencies Navy (Department of the Navy) Army (Department of the Army) HHS (Department of Health and Human Services)	$19,551,764	0.4%	Rank history: #61 in FY2022, #56 in FY2023, #74 in FY2024 and not on the FY2025 list; up 12 since FY2020.
41	Mayo Clinic Top agencies HHS (Department of Health and Human Services)	$19,192,825	0.4%	Rank history: not on the FY2022–FY2025 lists; down 21 since FY2020.
42	Teledyne Technologies Incorporated Through Teledyne Brown Engineering, Inc. Top agencies Navy (Department of the Navy)	$19,127,339	0.4%	Rank history: #82 in FY2022, #81 in FY2023, #49 in FY2024 and #65 in FY2025; down 2 since FY2020.
43	The Trustees of the University of Pennsylvania 2 awardees Top agencies HHS (Department of Health and Human Services)	$19,047,932	0.4%	Rank history: #39 in FY2022, #62 in FY2023, #68 in FY2024 and #94 in FY2025; up 37 since FY2020.
44	The University of Chicago Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$18,445,534	0.4%	Rank history: #87 in FY2022, #45 in FY2023, #91 in FY2024 and not on the FY2025 list; up 7 since FY2020.
45	Luminex Corp 4 awardees, including Diasorin Molecular, LLC, Diasorin S.P.A. and Diasorin Inc. Top agencies HHS (Department of Health and Human Services)	$18,321,416	0.4%	Rank history: not on the FY2022–FY2025 lists; up 60 since FY2020.
46	Thermo Electron Corporation 2 awardees, including Fisher Bioservices Inc. and Life Technologies Corporation Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) VA (Department of Veterans Affairs)	$17,552,928	0.3%	Rank history: #12 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; up 29 since FY2020.
47	University of Washington 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$17,299,168	0.3%	Rank history: #73 in FY2022, #80 in FY2023 and not on the FY2024–FY2025 lists; up 35 since FY2020.
48	Vitalant Top agencies HHS (Department of Health and Human Services)	$16,718,474	0.3%	Rank history: #53 in FY2022 and not on the FY2023–FY2025 lists; down 14 since FY2020.
49	Mathematica Inc Top agencies HHS (Department of Health and Human Services)	$16,052,350	0.3%	Rank history: #30 in FY2022, #32 in FY2023, #10 in FY2024 and #8 in FY2025; up 225 since FY2020.
50	Fred Hutchinson Cancer Research Center Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$15,794,832	0.3%	Rank history: #57 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
51	State of Arizona 2 awardees, including University of Arizona and Arizona Department of Health Services Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$15,348,019	0.3%	Rank history: #45 in FY2022 and not on the FY2023–FY2025 lists; up 40 since FY2020.
52	The Medicines Company 2 awardees Top agencies HHS (Department of Health and Human Services)	$14,999,842	0.3%	Rank history: not on the FY2022–FY2023 lists, #79 in FY2024 and not on the FY2025 list; up 8 since FY2020.
53	Sewp Solutions LLC Top agencies DHA (Defense Health Agency)	$14,997,030	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	University System of Maryland 6 awardees, including University of Maryland, Baltimore, University of Maryland, College Park and University of Maryland Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Army (Department of the Army)	$14,179,879	0.3%	Rank history: #83 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; down 26 since FY2020.
55	Inbios International Inc. Top agencies USAF (Department of the Air Force) HHS (Department of Health and Human Services) Army (Department of the Army)	$13,051,955	0.3%	Rank history: not on the FY2022–FY2025 lists; up 233 since FY2020.
56	Mesa Biotech Inc. Top agencies HHS (Department of Health and Human Services)	$12,991,595	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
57	Chembio Diagnostics Inc. Through Chembio Diagnostic Systems Inc. Top agencies HHS (Department of Health and Human Services)	$12,691,726	0.2%	Rank history: not on the FY2022–FY2025 lists; up 350 since FY2020.
58	Laulima Government Solutions, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$12,622,886	0.2%	Rank history: #94 in FY2022 and not on the FY2023–FY2025 lists; up 70 since FY2020.
59	Emory University Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) VA (Department of Veterans Affairs)	$12,611,046	0.2%	Rank history: #97 in FY2022, #77 in FY2023, #71 in FY2024 and #61 in FY2025; down 28 since FY2020.
60	Global Health Investment Corporation Top agencies HHS (Department of Health and Human Services)	$12,600,000	0.2%	Rank history: #15 in FY2022, #9 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
61	Public Health Vaccines LLC Top agencies HHS (Department of Health and Human Services)	$12,294,690	0.2%	Rank history: not on the FY2022–FY2023 lists, #100 in FY2024 and #43 in FY2025; new, not ranked in FY2020.
62	Visby Medical, Inc. Top agencies HHS (Department of Health and Human Services)	$12,172,171	0.2%	Rank history: #36 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
63	President and Fellows of Harvard College 3 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$12,118,184	0.2%	Rank history: #86 in FY2022, #52 in FY2023 and not on the FY2024–FY2025 lists; up 20 since FY2020.
64	Inflammatix, Inc. Top agencies HHS (Department of Health and Human Services)	$11,953,772	0.2%	Rank history: not on the FY2022–FY2025 lists; up 40 since FY2020.
65	Mako Medical Laboratories LLC Top agencies HHS (Department of Health and Human Services)	$11,700,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Rivanna Medical, Inc. Top agencies HHS (Department of Health and Human Services)	$11,635,503	0.2%	Rank history: not on the FY2022 list, #47 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
67	University of North Carolina at Chapel Hill 4 awardees Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) VA (Department of Veterans Affairs)	$11,587,059	0.2%	Rank history: #44 in FY2022, #91 in FY2023 and not on the FY2024–FY2025 lists; down 13 since FY2020.
68	Compagnie Merieux Alliance 2 awardees, including Advanced Bioscience Laboratories, Inc. Top agencies HHS (Department of Health and Human Services)	$11,490,818	0.2%	Rank history: #96 in FY2022 and not on the FY2023–FY2025 lists; down 10 since FY2020.
69	Fincantieri Marine Systems North America Inc. Through Consiglio Nazionale Delle Ricerche - Istituto DI Ricerca Genetica E Biomedica Top agencies HHS (Department of Health and Human Services)	$11,408,934	0.2%	Rank history: not on the FY2022–FY2025 lists; up 296 since FY2020.
70	Northwestern University 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$11,366,232	0.2%	Rank history: #78 in FY2022, #92 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
71	The Children's Hospital Corporation Top agencies HHS (Department of Health and Human Services)	$11,273,788	0.2%	Rank history: #56 in FY2022, #76 in FY2023, #63 in FY2024 and not on the FY2025 list; down 12 since FY2020.
72	Massachusetts Institute of Technology Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$11,198,312	0.2%	Rank history: #11 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
73	PGI Holding Corporation Top agencies HHS (Department of Health and Human Services)	$10,891,025	0.2%	Rank history: #70 in FY2022 and not on the FY2023–FY2025 lists; up 22 since FY2020.
74	Triton Systems, Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$10,655,548	0.2%	Rank history: not on the FY2022–FY2025 lists; up 27 since FY2020.
75	Chrysalis Biotherapeutics, Inc. Top agencies HHS (Department of Health and Human Services)	$10,455,381	0.2%	Rank history: not on the FY2022–FY2025 lists; up 119 since FY2020.
76	Trustees of Boston University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$9,995,509	0.2%	Rank history: #24 in FY2022, #20 in FY2023, #29 in FY2024 and #16 in FY2025; up 70 since FY2020.
77	Parsons Corporation Through Parsons Government Services Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DHA (Defense Health Agency)	$9,641,835	0.2%	Rank history: #84 in FY2022 and not on the FY2023–FY2025 lists; down 13 since FY2020.
78	University of Texas System 6 awardees, including University of Texas Medical Branch At Galveston, The Univeristy of Texas M.d. Anderson Cancer Center 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)	$9,561,511	0.2%	Rank history: #93 in FY2022 and not on the FY2023–FY2025 lists; up 34 since FY2020.
79	Cerus Corporation Top agencies HHS (Department of Health and Human Services)	$9,550,000	0.2%	Rank history: #47 in FY2022, #37 in FY2023 and not on the FY2024–FY2025 lists; down 43 since FY2020.
80	Vysnova Partners, LLC Top agencies Navy (Department of the Navy) Army (Department of the Army)	$8,920,081	0.2%	Rank history: #69 in FY2022 and not on the FY2023–FY2025 lists; down 51 since FY2020.
81	Health Decisions, Inc. Top agencies HHS (Department of Health and Human Services)	$8,632,839	0.2%	Rank history: not on the FY2022–FY2023 lists, #98 in FY2024 and not on the FY2025 list; up 165 since FY2020.
82	Charles River Laboratories International Inc. Through Charles River Laboratories, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$8,585,122	0.2%	Rank history: #71 in FY2022, #82 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
83	University of Louisville Top agencies HHS (Department of Health and Human Services)	$8,572,618	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
84	University of Mississippi Medical Center Top agencies HHS (Department of Health and Human Services)	$8,113,075	0.2%	Rank history: not on the FY2022 list, #68 in FY2023 and not on the FY2024–FY2025 lists; up 6 since FY2020.
85	The Administrators of Tulane Educational Fund 2 awardees Top agencies HHS (Department of Health and Human Services)	$7,815,035	0.2%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; down 15 since FY2020.
86	Precision Bioservices Inc. Through Precision for Medicine, Inc. Top agencies HHS (Department of Health and Human Services)	$7,688,601	0.2%	Rank history: not on the FY2022 list, #89 in FY2023 and not on the FY2024–FY2025 lists; up 14 since FY2020.
87	Oregon Health & Science University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$7,478,058	0.1%	Rank history: not on the FY2022 list, #84 in FY2023, #90 in FY2024 and not on the FY2025 list; up 24 since FY2020.
88	La Jolla Institute for Immunology Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$7,477,899	0.1%	Rank history: not on the FY2022–FY2025 lists; up 21 since FY2020.
89	Luna Innovations Incorporated Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$7,056,938	0.1%	Rank history: not on the FY2022–FY2025 lists; up 99 since FY2020.
90	Gilead Sciences Inc. Top agencies Army (Department of the Army)	$6,996,549	0.1%	Rank history: #58 in FY2022 and not on the FY2023–FY2025 lists; up 339 since FY2020.
91	Johnson & Johnson 3 awardees, including Ortho-Clinical Diagnostics, Inc., Janssen Research & Development, LLC and Janssen Vaccines & Prevention B.V. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$6,980,053	0.1%	Rank history: not on the FY2022 list, #70 in FY2023 and not on the FY2024–FY2025 lists; down 42 since FY2020.
92	The University of Iowa Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Army (Department of the Army)	$6,807,764	0.1%	Rank history: #99 in FY2022 and not on the FY2023–FY2025 lists; up 68 since FY2020.
93	Odyssey Systems Consulting Group, Ltd. Top agencies Army (Department of the Army) Navy (Department of the Navy) DHA (Defense Health Agency)	$6,762,815	0.1%	Rank history: not on the FY2022–FY2024 lists and #95 in FY2025; up 60 since FY2020.
94	Regents of the University of Michigan Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$6,743,453	0.1%	Rank history: #81 in FY2022, #87 in FY2023, #83 in FY2024 and #92 in FY2025; down 15 since FY2020.
95	University of Utah Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) USAF (Department of the Air Force)	$6,583,090	0.1%	Rank history: #90 in FY2022, #78 in FY2023, #57 in FY2024 and #82 in FY2025; up 13 since FY2020.
96	Hologic, Inc. Top agencies HHS (Department of Health and Human Services)	$6,490,129	0.1%	Rank history: #46 in FY2022 and not on the FY2023–FY2025 lists; down 59 since FY2020.
97	Regents of the University of Minnesota 2 awardees Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$6,451,441	0.1%	Rank history: not on the FY2022–FY2025 lists; down 3 since FY2020.
98	Brigham & Womens Hospital Inc 3 awardees, including The Mclean Hospital Corporation Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Army (Department of the Army)	$6,419,482	0.1%	Rank history: #88 in FY2022 and not on the FY2023–FY2025 lists; down 20 since FY2020.
99	University of Montana System Through University of Montana Top agencies HHS (Department of Health and Human Services)	$6,405,500	0.1%	Rank history: #62 in FY2022, #83 in FY2023 and not on the FY2024–FY2025 lists; down 56 since FY2020.
100	Research Triangle Institute Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$6,375,552	0.1%	Rank history: #77 in FY2022, #73 in FY2023, #23 in FY2024 and #25 in FY2025; down 29 since FY2020.

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100 of 799 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC AN

Code	Net obligations	Largest contractor
AN12 Health R&D Services; Health Care Services; Applied Research	$1,470,592,258	Emergent Biosolutions Inc.
AN11 Health R&D Services; Health Care Services; Basic Research	$1,011,927,284	Modernatx Inc.
AN42 Health R&D Services; Health Care – Other; Applied Research	$269,507,527	Leidos Holdings, Inc.
AN41 Health R&D Services; Health Care – Other; Basic Research	$236,213,535	The Mitre Corporation
AN13 Health R&D Services; Health Care Services; Experimental Development	$220,256,956	Siga Technologies, Inc.
AN91 R&D – Medical: Other (Basic Research)	$43,667,875	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc.

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 $5.12 billion obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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

Who were the top 10 PSC AN contractors in FY2021?

1. Leidos Holdings, Inc. ($436M), 2. Modernatx Inc. ($435M), 3. PPD Development L.P. ($416M), 4. Emergent Biosolutions Inc. ($411M), 5. Medical Technology Enterprise Consortium ($249M), 6. The Mitre Corporation ($168M), 7. Siga Technologies, Inc. ($113M), 8. Westat, Inc. ($102M), 9. Technical Resources International, Inc. ($90.2M), 10. Resilience Government Services, Inc. ($76.7M).

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