Top 100 Contractors in PSC 6505: Drugs and Biologicals, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Mckesson Corporation 9 awardees, including Biologics, Inc., Mckesson Medical-Surgical Inc. and Mckesson Plasma and Biologics LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$11,963,772,064	55.1%	Rank history: #2 in FY2021, #2 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	Cencora, Inc. 6 awardees, including Amerisourcebergen Drug Corp, Theracom, L.L.C. and ASD Specialty Healthcare, LLC Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$7,809,272,016	35.9%	Rank history: #5 in FY2021, #6 in FY2022, #3 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since Aug 2024–Jul 2025.
3	DMS Pharmaceutical Group Inc. Top agencies DLA (Defense Logistics Agency)	$267,267,058	1.2%	Rank history: #10 in FY2021, #10 in FY2022, #5 in FY2023, #5 in FY2024 and #3 in FY2025; up 2 since Aug 2024–Jul 2025.
4	Albert B. Sabin Vaccine Institute, Inc. (The) Top agencies HHS (Department of Health and Human Services)	$223,798,176	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
5	Emergent Biosolutions Inc. 2 awardees, including Emergent Biosolutions Canada Inc. and Emergent Biodefense Operations Lansing LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$139,788,297	0.6%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #6 in FY2025; up 2 since Aug 2024–Jul 2025.
6	Exelan Pharmaceuticals Inc. Top agencies VA (Department of Veterans Affairs)	$104,980,296	0.5%	Rank history: not on the FY2021–FY2024 lists and #10 in FY2025; up 3 since Aug 2024–Jul 2025.
7	Meridian Medical Technologies, LLC 2 awardees Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$70,298,008	0.3%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #84 in FY2025; up 42 since Aug 2024–Jul 2025.
8	Government of the United States Through DLA Troop Support Top agencies HHS (Department of Health and Human Services)	$65,536,123	0.3%	Rank history: #20 in FY2021, #18 in FY2022, #9 in FY2023, #9 in FY2024 and #8 in FY2025; unchanged since Aug 2024–Jul 2025.
9	Nighthawk Biosciences, Inc. Through Elusys Therapeutics Inc. Top agencies HHS (Department of Health and Human Services)	$55,273,060	0.3%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #11 in FY2025; new, not ranked in Aug 2024–Jul 2025.
10	Roche Holdings Inc. 2 awardees, including Genentech Usa, Inc. and Roche Diagnostics Corporation Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) DLA (Defense Logistics Agency)	$42,318,700	0.2%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
11	Teva Pharmaceuticals Usa, Inc. Top agencies DLA (Defense Logistics Agency)	$42,247,141	0.2%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and #14 in FY2025; up 2 since Aug 2024–Jul 2025.
12	Leidos Holdings, Inc. Through Leidos, Inc. Top agencies HHS (Department of Health and Human Services)	$37,485,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #15 in FY2025; new, not ranked in Aug 2024–Jul 2025.
13	Lantheus Holdings, Inc. 2 awardees, including Progenics Pharmaceuticals Inc. and Lantheus Medical Imaging, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$36,719,769	0.2%	Rank history: not on the FY2021 list, #38 in FY2022, #17 in FY2023, #19 in FY2024 and #16 in FY2025; up 7 since Aug 2024–Jul 2025.
14	Fresenius Kabi, LLC Top agencies HHS (Department of Health and Human Services) DLA (Defense Logistics Agency)	$36,658,160	0.2%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; down 4 since Aug 2024–Jul 2025.
15	Mapp Biopharmaceutical, Inc. Top agencies HHS (Department of Health and Human Services)	$35,807,639	0.2%	Rank history: not on the FY2021 list, #14 in FY2022, #16 in FY2023, not on the FY2024 list and #12 in FY2025; down 4 since Aug 2024–Jul 2025.
16	Chartwell RX LLC Top agencies HHS (Department of Health and Human Services) DLA (Defense Logistics Agency)	$34,050,073	0.2%	Rank history: not on the FY2021 list, #11 in FY2022, #99 in FY2023, not on the FY2024 list and #7 in FY2025; down 4 since Aug 2024–Jul 2025.
17	Rafa Laboratories Ltd Top agencies HHS (Department of Health and Human Services)	$33,392,936	0.2%	Rank history: #29 in FY2021, not on the FY2022–FY2024 lists and #19 in FY2025; new, not ranked in Aug 2024–Jul 2025.
18	Cerus Corporation Top agencies HHS (Department of Health and Human Services)	$33,237,040	0.2%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and not on the FY2025 list; down 2 since Aug 2024–Jul 2025.
19	Novartis Pharmaceuticals Corporation 2 awardees Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) DOJ (Department of Justice)	$30,007,647	0.1%	Rank history: not on the FY2021–FY2024 lists and #20 in FY2025; up 4 since Aug 2024–Jul 2025.
20	Usantibiotics LLC Top agencies HHS (Department of Health and Human Services)	$29,998,678	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
21	Cardinal Health, Inc. 5 awardees, including Cardinal Health 414, LLC, Cardinal Health 108, LLC and The Harvard Drug Group, L.L.C. Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency) DHA (Defense Health Agency)	$29,525,406	0.1%	Rank history: #31 in FY2021, #27 in FY2022, #13 in FY2023, #17 in FY2024 and #17 in FY2025; down 6 since Aug 2024–Jul 2025.
22	Valneva Usa, Inc. Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$21,779,504	0.1%	Rank history: not on the FY2021–FY2023 lists, #27 in FY2024 and #21 in FY2025; down 8 since Aug 2024–Jul 2025.
23	Seqirus USA Inc. Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$21,578,657	0.1%	Rank history: #21 in FY2021, #23 in FY2022, #10 in FY2023, #20 in FY2024 and #28 in FY2025; up 13 since Aug 2024–Jul 2025.
24	Paratek Pharmaceuticals, Inc. Top agencies HHS (Department of Health and Human Services)	$17,471,250	0.1%	Rank history: #26 in FY2021, not on the FY2022 list, #11 in FY2023, #26 in FY2024 and #45 in FY2025; up 20 since Aug 2024–Jul 2025.
25	Sagent Pharmaceuticals Inc. Top agencies HHS (Department of Health and Human Services) DLA (Defense Logistics Agency)	$16,795,109	0.1%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; up 177 since Aug 2024–Jul 2025.
26	Canadian Commercial Corporation Top agencies DLA (Defense Logistics Agency)	$16,599,962	0.1%	Rank history: not on the FY2021–FY2023 lists, #18 in FY2024 and #27 in FY2025; down 7 since Aug 2024–Jul 2025.
27	Bayer Aktiengesellschaft Through Bayer Healthcare Pharmaceuticals Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$15,568,890	0.1%	Rank history: not on the FY2021–FY2022 lists, #33 in FY2023, not on the FY2024 list and #26 in FY2025; up 94 since Aug 2024–Jul 2025.
28	The American National Red Cross 2 awardees Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$10,938,098	0.1%	Rank history: #41 in FY2021, #33 in FY2022, #20 in FY2023, #28 in FY2024 and #22 in FY2025; down 2 since Aug 2024–Jul 2025.
29	Pharmalogic Holdings Corp. 6 awardees, including Nuclear Diagnostic Products, Inc., Mid-America Isotopes, Inc. and Nuclear Diagnostic Products of Philadelphia, Inc. Top agencies VA (Department of Veterans Affairs)	$9,693,087	<0.1%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; up 73 since Aug 2024–Jul 2025.
30	Fresenius Medical Care Holdings Inc. 2 awardees, including Fresenius Kabi, LLC and Fenwal, Inc. Top agencies HHS (Department of Health and Human Services) DLA (Defense Logistics Agency)	$9,446,508	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 154 since Aug 2024–Jul 2025.
31	Sofie Co. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$9,414,430	<0.1%	Rank history: not on the FY2021–FY2023 lists, #61 in FY2024 and #29 in FY2025; down 3 since Aug 2024–Jul 2025.
32	Seqirus Inc. Top agencies HHS (Department of Health and Human Services)	$9,004,206	<0.1%	Rank history: #25 in FY2021, not on the FY2022–FY2023 lists, #21 in FY2024 and #36 in FY2025; down 11 since Aug 2024–Jul 2025.
33	Heyltex Corporation Top agencies HHS (Department of Health and Human Services)	$8,099,930	<0.1%	Rank history: not on the FY2021 list, #58 in FY2022, not on the FY2023–FY2024 lists and #32 in FY2025; new, not ranked in Aug 2024–Jul 2025.
34	Glaxosmithkline, LLC Top agencies HHS (Department of Health and Human Services) DOS (Department of State) Army (Department of the Army)	$8,070,451	<0.1%	Rank history: #8 in FY2021, #5 in FY2022, #45 in FY2023, #11 in FY2024 and #18 in FY2025; down 16 since Aug 2024–Jul 2025.
35	Accord Biopharma, Inc. Top agencies HHS (Department of Health and Human Services)	$7,615,500	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
36	Bristol-Myers Squibb Company Top agencies VA (Department of Veterans Affairs)	$6,940,251	<0.1%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #38 in FY2025; down 1 since Aug 2024–Jul 2025.
37	Sanofi Pasteur Inc. 2 awardees, including Sanofi Vaccines US Inc. and Dynavax Technologies Corporation Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$6,930,649	<0.1%	Rank history: not on the FY2021–FY2023 lists, #31 in FY2024 and #24 in FY2025; down 13 since Aug 2024–Jul 2025.
38	Allosource Top agencies HHS (Department of Health and Human Services)	$6,881,184	<0.1%	Rank history: not on the FY2021 list, #50 in FY2022, not on the FY2023 list, #44 in FY2024 and not on the FY2025 list; up 4 since Aug 2024–Jul 2025.
39	Artemis Technologies Inc. Top agencies USDA (Department of Agriculture)	$6,856,159	<0.1%	Rank history: not on the FY2021–FY2023 lists, #43 in FY2024 and #33 in FY2025; down 5 since Aug 2024–Jul 2025.
40	Baxter Healthcare Corporation Top agencies HHS (Department of Health and Human Services) DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$6,086,126	<0.1%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; up 83 since Aug 2024–Jul 2025.
41	RLS (USA) Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$5,766,992	<0.1%	Rank history: #86 in FY2021, #65 in FY2022, #44 in FY2023, #83 in FY2024 and #59 in FY2025; up 25 since Aug 2024–Jul 2025.
42	Cardinal Health 200, LLC Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$5,212,573	<0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; up 36 since Aug 2024–Jul 2025.
43	Siemens Corporation 2 awardees, including Petnet Solutions, Inc. and Siemens Healthcare Diagnostics Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$5,152,234	<0.1%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; up 18 since Aug 2024–Jul 2025.
44	WG Critical Care, LLC Top agencies HHS (Department of Health and Human Services)	$4,974,870	<0.1%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; new, not ranked in Aug 2024–Jul 2025.
45	Boehringer Ingelheim Animal Health USA Inc Top agencies USDA (Department of Agriculture)	$4,464,432	<0.1%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023, #37 in FY2024 and #37 in FY2025; down 14 since Aug 2024–Jul 2025.
46	Boston Scientific Corp Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$4,379,828	<0.1%	Rank history: #58 in FY2021, #55 in FY2022, #40 in FY2023, #47 in FY2024 and #39 in FY2025; down 6 since Aug 2024–Jul 2025.
47	General Electric Company Through Medi-Physics, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$4,328,363	<0.1%	Rank history: not on the FY2021 list, #72 in FY2022, #48 in FY2023, #99 in FY2024 and #54 in FY2025; new, not ranked in Aug 2024–Jul 2025.
48	North American Rescue, LLC Top agencies DLA (Defense Logistics Agency)	$4,276,521	<0.1%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and #52 in FY2025; up 5 since Aug 2024–Jul 2025.
49	Vitalant 2 awardees, including Lifestream Blood Bank Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$4,270,545	<0.1%	Rank history: #57 in FY2021, #60 in FY2022, #50 in FY2023, #52 in FY2024 and #48 in FY2025; down 1 since Aug 2024–Jul 2025.
50	Jubilant Draximage Radiopharmacies, Inc. 2 awardees Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$4,250,023	<0.1%	Rank history: #71 in FY2021, #85 in FY2022, #39 in FY2023, #46 in FY2024 and #42 in FY2025; down 7 since Aug 2024–Jul 2025.
51	Versiti Blood Health, Inc. 2 awardees, including Versiti Indiana, Inc. Top agencies VA (Department of Veterans Affairs)	$3,790,248	<0.1%	Rank history: #76 in FY2021, #64 in FY2022, #46 in FY2023, #54 in FY2024 and #51 in FY2025; up 9 since Aug 2024–Jul 2025.
52	Pharmacy Buying Association, Inc. Top agencies VA (Department of Veterans Affairs)	$3,696,281	<0.1%	Rank history: #42 in FY2021, #47 in FY2022, #26 in FY2023, #41 in FY2024 and #47 in FY2025; down 6 since Aug 2024–Jul 2025.
53	Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency)	$3,182,122	<0.1%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; up 22 since Aug 2024–Jul 2025.
54	Bracco Diagnostics Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$3,136,368	<0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; up 8 since Aug 2024–Jul 2025.
55	UnitedHealth Group Incorporated 4 awardees, including Optum Infusion Services 308, LLC, Optum Pharmacy 801, Inc. and Optum Frontier Therapies II, LLC Top agencies VA (Department of Veterans Affairs)	$3,047,906	<0.1%	Rank history: #46 in FY2021, #39 in FY2022, not on the FY2023 list, #62 in FY2024 and #68 in FY2025; up 14 since Aug 2024–Jul 2025.
56	Merck & Co. Inc. Through Merck Sharp & Dohme LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,927,487	<0.1%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #49 in FY2025; down 50 since Aug 2024–Jul 2025.
57	Johnson & Johnson 5 awardees, including Depuy Synthes Sales Inc., Johnson & Johnson Health Care Systems Inc. and Janssen Biotech Inc. Top agencies DLA (Defense Logistics Agency) DOJ (Department of Justice) VA (Department of Veterans Affairs)	$2,682,099	<0.1%	Rank history: #37 in FY2021, #51 in FY2022, #47 in FY2023, #53 in FY2024 and #73 in FY2025; up 16 since Aug 2024–Jul 2025.
58	Telix Pharmaceuticals US Inc. Top agencies VA (Department of Veterans Affairs)	$2,651,492	<0.1%	Rank history: not on the FY2021–FY2022 lists, #90 in FY2023, #56 in FY2024 and #57 in FY2025; down 2 since Aug 2024–Jul 2025.
59	Carter Bloodcare Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$2,551,376	<0.1%	Rank history: not on the FY2021 list, #78 in FY2022, #73 in FY2023, #88 in FY2024 and #78 in FY2025; up 21 since Aug 2024–Jul 2025.
60	South Texas Blood & Tissue Center Top agencies DHA (Defense Health Agency)	$2,159,708	<0.1%	Rank history: not on the FY2021 list, #97 in FY2022, not on the FY2023–FY2024 lists and #82 in FY2025; up 7 since Aug 2024–Jul 2025.
61	Takeda Pharmaceuticals America, Inc. Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs) DLA (Defense Logistics Agency)	$1,990,001	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 15 since Aug 2024–Jul 2025.
62	O&M Halyard, Inc. Top agencies DLA (Defense Logistics Agency)	$1,868,167	<0.1%	Rank history: not on the FY2021 list, #61 in FY2022, not on the FY2023 list, #76 in FY2024 and #67 in FY2025; up 6 since Aug 2024–Jul 2025.
63	Oneblood, Inc. Top agencies VA (Department of Veterans Affairs)	$1,845,801	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
64	American Regent Inc Top agencies DLA (Defense Logistics Agency)	$1,804,958	<0.1%	Rank history: not on the FY2021–FY2024 lists and #70 in FY2025; up 58 since Aug 2024–Jul 2025.
65	Octapharma USA Inc. Top agencies DHA (Defense Health Agency)	$1,800,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 195 since Aug 2024–Jul 2025.
66	Pfizer Inc. Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$1,733,233	<0.1%	Rank history: #1 in FY2021, #1 in FY2022, #4 in FY2023, not on the FY2024 list and #63 in FY2025; new, not ranked in Aug 2024–Jul 2025.
67	Ortho-Clinical Diagnostics Inc. 2 awardees, including Quidelortho Sales Company, LLC Top agencies DHA (Defense Health Agency) DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$1,578,602	<0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; up 22 since Aug 2024–Jul 2025.
68	Oklahoma Blood Institute Top agencies VA (Department of Veterans Affairs)	$1,567,292	<0.1%	Rank history: #97 in FY2021, #90 in FY2022, #77 in FY2023, #67 in FY2024 and not on the FY2025 list; up 17 since Aug 2024–Jul 2025.
69	Priority Healthcare Distribution Inc. 2 awardees Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$1,521,999	<0.1%	Rank history: not on the FY2021–FY2023 lists, #72 in FY2024 and #64 in FY2025; down 4 since Aug 2024–Jul 2025.
70	Schaaf Drugs, LLC Top agencies VA (Department of Veterans Affairs)	$1,498,826	<0.1%	Rank history: not on the FY2021 list, #91 in FY2022, not on the FY2023 list, #86 in FY2024 and not on the FY2025 list; up 42 since Aug 2024–Jul 2025.
71	Abbott Laboratories Inc. 4 awardees, including Abbott Molecular Inc. and Abbott Rapid DX North America LLC Top agencies DHA (Defense Health Agency) DLA (Defense Logistics Agency) DOS (Department of State)	$1,483,942	<0.1%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 1 since Aug 2024–Jul 2025.
72	Phoenix Textile Corporation Top agencies DLA (Defense Logistics Agency)	$1,421,404	<0.1%	Rank history: #66 in FY2021, #81 in FY2022, #59 in FY2023, #75 in FY2024 and #86 in FY2025; up 14 since Aug 2024–Jul 2025.
73	Trillamed LLC Top agencies VA (Department of Veterans Affairs)	$1,381,695	<0.1%	Rank history: #48 in FY2021, #52 in FY2022, #51 in FY2023, #81 in FY2024 and #83 in FY2025; up 9 since Aug 2024–Jul 2025.
74	Sirtex Medical Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,280,159	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 94 since Aug 2024–Jul 2025.
75	United Therapeutics Corp Top agencies VA (Department of Veterans Affairs)	$1,241,915	<0.1%	Rank history: #98 in FY2021, #93 in FY2022, #63 in FY2023, #70 in FY2024 and not on the FY2025 list; up 65 since Aug 2024–Jul 2025.
76	Melling LLC Top agencies VA (Department of Veterans Affairs)	$1,231,578	<0.1%	Rank history: #49 in FY2021, #77 in FY2022, #57 in FY2023, not on the FY2024 list and #71 in FY2025; up 14 since Aug 2024–Jul 2025.
77	Becton, Dickinson and Co 3 awardees Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services)	$1,186,384	<0.1%	Rank history: #27 in FY2021, #31 in FY2022, #69 in FY2023, not on the FY2024 list and #69 in FY2025; new, not ranked in Aug 2024–Jul 2025.
78	Lifesouth Community Blood Centers Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$1,162,923	<0.1%	Rank history: #88 in FY2021, #84 in FY2022, #72 in FY2023, not on the FY2024 list and #76 in FY2025; up 1 since Aug 2024–Jul 2025.
79	Government Scientific Source Inc. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) DLA (Defense Logistics Agency)	$1,134,693	<0.1%	Rank history: #72 in FY2021, #70 in FY2022, #61 in FY2023, #84 in FY2024 and #72 in FY2025; down 9 since Aug 2024–Jul 2025.
80	Amicus Therapeutics US, LLC Top agencies VA (Department of Veterans Affairs)	$1,105,863	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 105 since Aug 2024–Jul 2025.
81	Genscript USA Inc. Top agencies HHS (Department of Health and Human Services)	$1,049,478	<0.1%	Rank history: #96 in FY2021, not on the FY2022–FY2023 lists, #94 in FY2024 and #92 in FY2025; up 16 since Aug 2024–Jul 2025.
82	Dakota Drug, Inc. Top agencies DLA (Defense Logistics Agency)	$1,007,716	<0.1%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; down 43 since Aug 2024–Jul 2025.
83	Central Admixture Pharmacy Services, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$1,000,410	<0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 18 since Aug 2024–Jul 2025.
84	Core Trading Co Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency)	$960,192	<0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; up 15 since Aug 2024–Jul 2025.
85	Miltenyi Biotec, Inc. Top agencies HHS (Department of Health and Human Services)	$958,570	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 355 since Aug 2024–Jul 2025.
86	The Leland Stanford Junior University Top agencies VA (Department of Veterans Affairs)	$898,721	<0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023, not on the FY2024 list and #80 in FY2025; down 3 since Aug 2024–Jul 2025.
87	Diasorin S.P.A. 2 awardees, including Diasorin Inc. and Luminex Corp Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$866,117	<0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; up 27 since Aug 2024–Jul 2025.
88	Medtronic Inc. 3 awardees, including INO Therapeutics LLC and Therakos LLC Top agencies DHA (Defense Health Agency)	$857,722	<0.1%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #89 in FY2025; up 8 since Aug 2024–Jul 2025.
89	Merz Pharmaceuticals LLC Top agencies VA (Department of Veterans Affairs)	$853,397	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 31 since Aug 2024–Jul 2025.
90	University of Oklahoma Top agencies VA (Department of Veterans Affairs)	$825,142	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
91	Golden State Medical Supply, Inc. Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency)	$803,905	<0.1%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; down 54 since Aug 2024–Jul 2025.
92	Astrazeneca Pharmaceuticals LP 2 awardees, including Alexion Pharmaceuticals Inc. Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency)	$733,852	<0.1%	Rank history: not on the FY2021–FY2023 lists, #85 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
93	Pantherx Specialty, LLC Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$718,173	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 154 since Aug 2024–Jul 2025.
94	Harmony Biosciences LLC Top agencies VA (Department of Veterans Affairs)	$709,217	<0.1%	Rank history: not on the FY2021–FY2023 lists, #79 in FY2024 and #98 in FY2025; up 13 since Aug 2024–Jul 2025.
95	Thomas Scientific, LLC Top agencies DLA (Defense Logistics Agency)	$691,620	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 79 since Aug 2024–Jul 2025.
96	Pine Pharmaceuticals LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$677,224	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 56 since Aug 2024–Jul 2025.
97	Zoll Medical Corporation 2 awardees, including Zoll Data Systems, Inc. Top agencies DLA (Defense Logistics Agency) DOS (Department of State)	$654,679	<0.1%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and not on the FY2025 list; down 59 since Aug 2024–Jul 2025.
98	Aspen Surgical Products, Inc. Top agencies DLA (Defense Logistics Agency)	$617,531	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 53 since Aug 2024–Jul 2025.
99	FFF Enterprises, Inc. Top agencies DHS (Department of Homeland Security)	$616,000	<0.1%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #40 in FY2025; down 70 since Aug 2024–Jul 2025.
100	New York Blood Center, Inc. Top agencies VA (Department of Veterans Affairs)	$566,272	<0.1%	Rank history: not on the FY2021 list, #98 in FY2022, #92 in FY2023 and not on the FY2024–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 $21.7 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.

Quick answers