Top 100 Contractors in NAICS 493110: General Warehousing and Storage, FY2021

Name: Top 100 Contractors in NAICS 493110: General Warehousing and Storage, FY2021
Creator: GovTribe

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

The top 10 won 59% of FY2021 NAICS 493110 contract dollars

Contract obligations: $745,845,980 Net of deobligations, by contracts coded NAICS 493110
Contractors: 244 Parent companies with an obligation
Largest contractor: Life Science Logistics LLC $76 million, 9.4% 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	Life Science Logistics LLC 2 awardees Top agencies HHS (Department of Health and Human Services)	$76,041,646	9.4%	Rank history: #5 in FY2022, #7 in FY2023, #8 in FY2024 and #27 in FY2025; up 5 since FY2020.
2	Henry Schein, Inc. Top agencies HHS (Department of Health and Human Services)	$72,668,592	9.0%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
3	Cardinal Health, Inc. Through Cardinal Health 200, LLC Top agencies HHS (Department of Health and Human Services)	$60,519,000	7.5%	Rank history: #13 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
4	Amentum Services, Inc. Top agencies Treasury (Department of the Treasury) DLA (Defense Logistics Agency)	$56,027,270	6.9%	Rank history: #1 in FY2022, #1 in FY2023, #1 in FY2024 and not on the FY2025 list; up 61 since FY2020.
5	Global Asset Technologies LLC Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$48,241,085	5.9%	Rank history: #2 in FY2022, #32 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
6	Valiant Technical Services Inc. Top agencies DLA (Defense Logistics Agency)	$42,645,886	5.3%	Rank history: not on the FY2022–FY2023 lists, #4 in FY2024 and #4 in FY2025; down 1 since FY2020.
7	Technica LLC Top agencies DLA (Defense Logistics Agency)	$35,459,804	4.4%	Rank history: #21 in FY2022, not on the FY2023–FY2024 lists and #33 in FY2025; down 4 since FY2020.
8	Serco North America (Holdings) Inc Through Serco Inc. Top agencies DLA (Defense Logistics Agency)	$29,537,552	3.6%	Rank history: not on the FY2022–FY2025 lists; down 4 since FY2020.
9	Iron Mountain Incorporated 3 awardees, including Iron Mountain Information Management LLC and Iron Mountain Secure Shredding, Inc. Top agencies Commerce (Department of Commerce) DHS (Department of Homeland Security) VA (Department of Veterans Affairs)	$29,151,711	3.6%	Rank history: #3 in FY2022, #2 in FY2023, #2 in FY2024 and #9 in FY2025; up 2 since FY2020.
10	Synergy Logistics Services II LLC Top agencies DLA (Defense Logistics Agency)	$27,242,005	3.4%	Rank history: #6 in FY2022, #5 in FY2023, #17 in FY2024 and not on the FY2025 list; down 1 since FY2020.
11	Integrated Quality Solutions, LLC Top agencies HHS (Department of Health and Human Services)	$16,488,714	2.0%	Rank history: #7 in FY2022, #11 in FY2023, #16 in FY2024 and #15 in FY2025; down 3 since FY2020.
12	Solution One Industries, Inc. Top agencies USAF (Department of the Air Force)	$15,131,897	1.9%	Rank history: #11 in FY2022, #13 in FY2023, #14 in FY2024 and #18 in FY2025; new, not ranked in FY2020.
13	Lion-Vallen Limited Partnership Top agencies DLA (Defense Logistics Agency)	$14,072,387	1.7%	Rank history: #30 in FY2022, #6 in FY2023, #13 in FY2024 and #12 in FY2025; up 13 since FY2020.
14	Accent Controls, Inc. Top agencies DLA (Defense Logistics Agency)	$11,616,482	1.4%	Rank history: #8 in FY2022, #17 in FY2023, #9 in FY2024 and #6 in FY2025; up 13 since FY2020.
15	Fedex Corp Through Genco Infrastructure Solutions, Inc. Top agencies DLA (Defense Logistics Agency)	$11,120,246	1.4%	Rank history: #15 in FY2022 and not on the FY2023–FY2025 lists; down 3 since FY2020.
16	Rbex, Inc. Top agencies DHS (Department of Homeland Security) Treasury (Department of the Treasury)	$9,947,280	1.2%	Rank history: #18 in FY2022, #21 in FY2023, #22 in FY2024 and #84 in FY2025; unchanged since FY2020.
17	American Operations Corporation Through AOC Logistics LLC Top agencies DLA (Defense Logistics Agency)	$9,107,399	1.1%	Rank history: #26 in FY2022, #23 in FY2023, #90 in FY2024 and not on the FY2025 list; up 4 since FY2020.
18	Techtrans International Inc. Top agencies NASA (National Aeronautics and Space Administration)	$9,093,464	1.1%	Rank history: #16 in FY2022, #14 in FY2023, #15 in FY2024 and #14 in FY2025; down 5 since FY2020.
19	Arizona Industries for the Blind Top agencies DLA (Defense Logistics Agency)	$9,080,451	1.1%	Rank history: #9 in FY2022, #18 in FY2023, #26 in FY2024 and #44 in FY2025; down 4 since FY2020.
20	Goodwill Services Inc. Top agencies Navy (Department of the Navy)	$8,619,035	1.1%	Rank history: not on the FY2022–FY2023 lists, #23 in FY2024 and #22 in FY2025; new, not ranked in FY2020.
21	Sawtst LLC Top agencies DLA (Defense Logistics Agency)	$8,039,838	1.0%	Rank history: #40 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
22	Battelle Memorial Institute Top agencies HHS (Department of Health and Human Services)	$6,886,188	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
23	Bmmi BSC Top agencies USAID (US Agency for International Development)	$6,300,000	0.8%	Rank history: not on the FY2022 list, #28 in FY2023, #36 in FY2024 and #29 in FY2025; up 7 since FY2020.
24	Goldbelt, Incorporated Through Goldbelt C6, LLC Top agencies DHS (Department of Homeland Security)	$6,233,416	0.8%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
25	Paris Brothers, Inc. Top agencies USDA (Department of Agriculture)	$6,029,208	0.7%	Rank history: #17 in FY2022, #16 in FY2023, #11 in FY2024 and #8 in FY2025; new, not ranked in FY2020.
26	Industries for the Blind and Visually Impaired, Inc. Top agencies Navy (Department of the Navy)	$5,847,220	0.7%	Rank history: #37 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; up 3 since FY2020.
27	Cherokee Nation 2 awardees, including Cherokee Nation Red Wing, L.L.C. and Cherokee Nation Management & Consulting, L.l.c.. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$5,494,271	0.7%	Rank history: #49 in FY2022, #46 in FY2023, #55 in FY2024 and not on the FY2025 list; down 2 since FY2020.
28	Olgoonik Corporation Through Olgoonik Technical Services, LLC Top agencies DLA (Defense Logistics Agency)	$5,133,047	0.6%	Rank history: not on the FY2022–FY2025 lists; down 8 since FY2020.
29	Industries of the Blind Inc. Top agencies DLA (Defense Logistics Agency)	$4,729,076	0.6%	Rank history: #14 in FY2022, #12 in FY2023, #12 in FY2024 and #11 in FY2025; down 1 since FY2020.
30	Metropolitan Van and Storage Inc. Top agencies OSD (Office of the Secretary of Defense) Army (Department of the Army)	$4,722,152	0.6%	Rank history: #23 in FY2022, #19 in FY2023, #18 in FY2024 and #20 in FY2025; up 17 since FY2020.
31	Professional Contract Services, Inc. Top agencies Navy (Department of the Navy)	$4,269,506	0.5%	Rank history: #29 in FY2022, #27 in FY2023, #21 in FY2024 and #23 in FY2025; up 1 since FY2020.
32	Olgoonik Federal, LLC Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$4,137,959	0.5%	Rank history: #25 in FY2022, #10 in FY2023, #6 in FY2024 and #2 in FY2025; new, not ranked in FY2020.
33	Advanced Technology Logistics, Inc. Top agencies DLA (Defense Logistics Agency)	$3,983,146	0.5%	Rank history: not on the FY2022 list, #24 in FY2023, #39 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
34	Synergy Logistics Services, LLC Top agencies DLA (Defense Logistics Agency)	$3,865,458	0.5%	Rank history: #33 in FY2022, #31 in FY2023, #7 in FY2024 and #25 in FY2025; down 3 since FY2020.
35	Management & Technology Solutions Inc. Top agencies Navy (Department of the Navy)	$3,780,143	0.5%	Rank history: #27 in FY2022, #15 in FY2023, #20 in FY2024 and #19 in FY2025; down 12 since FY2020.
36	Government of the United States Through Navy Exchange Service Command Top agencies DLA (Defense Logistics Agency)	$3,100,000	0.4%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
37	Goodwill Industries of North Georgia, Inc. Top agencies HHS (Department of Health and Human Services)	$2,995,762	0.4%	Rank history: #42 in FY2022, #38 in FY2023, #38 in FY2024 and #65 in FY2025; up 7 since FY2020.
38	Skookum Educational Programs Top agencies USAF (Department of the Air Force)	$2,831,738	0.3%	Rank history: #47 in FY2022, #49 in FY2023, #45 in FY2024 and #40 in FY2025; up 4 since FY2020.
39	Aphena Pharma Solutions Holdings, Inc. Through Aphena Pharma Solutions-Tennessee, LLC Top agencies VA (Department of Veterans Affairs)	$2,694,334	0.3%	Rank history: #45 in FY2022, #45 in FY2023, #81 in FY2024 and not on the FY2025 list; up 13 since FY2020.
40	Bollore Transport & Logi Through Ceva Air & Ocean USA Inc. Top agencies USAID (US Agency for International Development)	$2,648,811	0.3%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
41	Old Harbor Native Corporation Through Shearwater Systems, LLC Top agencies Navy (Department of the Navy)	$2,637,627	0.3%	Rank history: #67 in FY2022 and not on the FY2023–FY2025 lists; up 7 since FY2020.
42	Hurricane Consulting, Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$2,500,704	0.3%	Rank history: #32 in FY2022, #30 in FY2023, #30 in FY2024 and #63 in FY2025; up 3 since FY2020.
43	The Chenega Corporation 2 awardees, including Chenega Healthcare Services LLC Top agencies DOD (Department of Defense) WHS (DOD Washington Headquarters Service)	$2,426,848	0.3%	Rank history: #38 in FY2022, #35 in FY2023 and not on the FY2024–FY2025 lists; down 5 since FY2020.
44	Katmai Integrated Solutions, LLC Top agencies DOS (Department of State)	$2,082,791	0.3%	Rank history: #35 in FY2022, #29 in FY2023, #37 in FY2024 and #30 in FY2025; up 11 since FY2020.
45	C Steinweg Logistics (Pty) Ltd Top agencies USAID (US Agency for International Development)	$2,000,000	0.2%	Rank history: #48 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
46	RTX Corporation Through Raytheon Company Top agencies Navy (Department of the Navy)	$1,960,051	0.2%	Rank history: #58 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
47	Logistics Support Services JV LLC Top agencies DLA (Defense Logistics Agency)	$1,927,838	0.2%	Rank history: #46 in FY2022, #42 in FY2023, #33 in FY2024 and #42 in FY2025; new, not ranked in FY2020.
48	Logzone Inc. Top agencies DLA (Defense Logistics Agency)	$1,886,219	0.2%	Rank history: not on the FY2022–FY2025 lists; down 14 since FY2020.
49	Transportes Internacionales Ferris SA Top agencies Navy (Department of the Navy)	$1,877,763	0.2%	Rank history: #59 in FY2022, #58 in FY2023, #44 in FY2024 and #49 in FY2025; up 11 since FY2020.
50	Noble Supply & Logistics, LLC Top agencies USAF (Department of the Air Force)	$1,785,844	0.2%	Rank history: #61 in FY2022 and not on the FY2023–FY2025 lists; up 41 since FY2020.
51	Rem Italia S.R.L. Top agencies Navy (Department of the Navy)	$1,752,420	0.2%	Rank history: #50 in FY2022, #62 in FY2023, #66 in FY2024 and #51 in FY2025; up 5 since FY2020.
52	VSS Logistics LLC Top agencies VA (Department of Veterans Affairs)	$1,716,343	0.2%	Rank history: #41 in FY2022, #37 in FY2023, #47 in FY2024 and #39 in FY2025; up 27 since FY2020.
53	Ukpeagvik Inupiat Corpor Through Bowhead Operations & Maintenance Solutions LLC Top agencies DLA (Defense Logistics Agency)	$1,712,713	0.2%	Rank history: #54 in FY2022, #55 in FY2023, #56 in FY2024 and not on the FY2025 list; up 9 since FY2020.
54	Miami Technology Solutions, LLC Top agencies DOS (Department of State)	$1,653,764	0.2%	Rank history: not on the FY2022–FY2023 lists, #25 in FY2024 and #46 in FY2025; down 15 since FY2020.
55	Automotive & Industrial Supply, LLC Top agencies USAF (Department of the Air Force)	$1,574,600	0.2%	Rank history: #55 in FY2022, #41 in FY2023, #48 in FY2024 and #45 in FY2025; up 171 since FY2020.
56	Miami Nation Enterpeises Through Miami Technology Solutions, LLC Top agencies DOS (Department of State)	$1,527,387	0.2%	Rank history: #36 in FY2022, #20 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
57	Schroeder Moving Systems of Appleton, LLC Top agencies DOJ (Department of Justice)	$1,512,000	0.2%	Rank history: not on the FY2022 list, #90 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
58	Unalakleet Investments LLC Top agencies Navy (Department of the Navy)	$1,489,663	0.2%	Rank history: #60 in FY2022, #60 in FY2023, #50 in FY2024 and #48 in FY2025; new, not ranked in FY2020.
59	Coin Wrap Inc. Top agencies Treasury (Department of the Treasury)	$1,369,735	0.2%	Rank history: #65 in FY2022, not on the FY2023 list, #34 in FY2024 and #47 in FY2025; new, not ranked in FY2020.
60	Hana Industries, Inc. Top agencies HHS (Department of Health and Human Services)	$1,352,951	0.2%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
61	Government Logistics Top agencies DOS (Department of State)	$1,351,488	0.2%	Rank history: #44 in FY2022, #36 in FY2023, #42 in FY2024 and #41 in FY2025; down 24 since FY2020.
62	Acc3 International Incorporated Top agencies Navy (Department of the Navy)	$1,333,233	0.2%	Rank history: #66 in FY2022, #53 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
63	Purdy Group LLC Top agencies HHS (Department of Health and Human Services)	$1,162,598	0.1%	Rank history: #68 in FY2022, #67 in FY2023 and not on the FY2024–FY2025 lists; down 9 since FY2020.
64	Sac Trasporti S.R.L. Top agencies Navy (Department of the Navy)	$1,031,719	0.1%	Rank history: #43 in FY2022, #71 in FY2023, not on the FY2024 list and #66 in FY2025; up 6 since FY2020.
65	Granite Commercial Real Estate LLC Top agencies USAF (Department of the Air Force)	$923,811	0.1%	Rank history: #75 in FY2022 and not on the FY2023–FY2025 lists; up 2 since FY2020.
66	True North Logistics LLC Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs)	$837,042	0.1%	Rank history: #77 in FY2022, #77 in FY2023 and not on the FY2024–FY2025 lists; down 3 since FY2020.
67	Asahi General Trading and Contracting Co. WLL Top agencies DLA (Defense Logistics Agency)	$824,673	0.1%	Rank history: #86 in FY2022, #80 in FY2023, #87 in FY2024 and #85 in FY2025; new, not ranked in FY2020.
68	Vanquish Worldwide L.L.C. Top agencies EPA (Environmental Protection Agency)	$824,522	0.1%	Rank history: not on the FY2022–FY2025 lists; up 6 since FY2020.
69	Kuehne + Nagel Investment Inc. Through Kuehne + Nagel Inc. Top agencies USAID (US Agency for International Development)	$810,000	0.1%	Rank history: #76 in FY2022, #78 in FY2023 and not on the FY2024–FY2025 lists; up 15 since FY2020.
70	C B T Logistics, LLC Top agencies EPA (Environmental Protection Agency)	$763,935	0.1%	Rank history: #78 in FY2022, #85 in FY2023, #88 in FY2024 and not on the FY2025 list; up 3 since FY2020.
71	Leader Communications Inc. Top agencies DOT (Department of Transportation)	$763,557	0.1%	Rank history: #71 in FY2022 and not on the FY2023–FY2025 lists; down 30 since FY2020.
72	Technology Ventures, Inc. Top agencies DOE (Department of Energy)	$759,954	0.1%	Rank history: #73 in FY2022, #75 in FY2023, #78 in FY2024 and #70 in FY2025; new, not ranked in FY2020.
73	Zeal-It Trading and Contracting Top agencies DLA (Defense Logistics Agency)	$710,180	0.1%	Rank history: #99 in FY2022, #84 in FY2023, #92 in FY2024 and #99 in FY2025; new, not ranked in FY2020.
74	ARTEMIS Top agencies DOS (Department of State)	$708,572	0.1%	Rank history: #87 in FY2022 and not on the FY2023–FY2025 lists; up 6 since FY2020.
75	Chenega Infinity, LLC Top agencies DOS (Department of State)	$697,936	0.1%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
76	Prime Response, Inc. Top agencies SSA (Social Security Administration)	$649,746	0.1%	Rank history: #82 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; up 1 since FY2020.
77	Logcor, Inc. Top agencies Navy (Department of the Navy)	$613,914	0.1%	Rank history: #83 in FY2022, #82 in FY2023, #85 in FY2024 and #83 in FY2025; new, not ranked in FY2020.
78	Express Transports SA Top agencies DOS (Department of State)	$572,929	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
79	Agiliti Health Inc. Top agencies VA (Department of Veterans Affairs)	$561,481	0.1%	Rank history: #80 in FY2022, #88 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
80	Gosselin Mobility Through Gosselin Mobility Moscow LLC Top agencies DOS (Department of State)	$542,523	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
81	Burgos Group, LLC Top agencies Navy (Department of the Navy)	$536,557	0.1%	Rank history: not on the FY2022–FY2025 lists; down 17 since FY2020.
82	Agr, LLC Top agencies DOS (Department of State) Navy (Department of the Navy)	$528,196	0.1%	Rank history: #95 in FY2022 and not on the FY2023–FY2025 lists; down 11 since FY2020.
83	International Service Contractors LLC Top agencies Navy (Department of the Navy)	$515,491	0.1%	Rank history: #89 in FY2022, #89 in FY2023, not on the FY2024 list and #80 in FY2025; up 6 since FY2020.
84	Premier Office Solutions Inc. Top agencies VA (Department of Veterans Affairs)	$492,039	0.1%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
85	Soar 365 Top agencies Navy (Department of the Navy) Army (Department of the Army)	$488,210	0.1%	Rank history: #92 in FY2022, #100 in FY2023, #96 in FY2024 and #87 in FY2025; unchanged since FY2020.
86	Jam, K.K. Top agencies Navy (Department of the Navy)	$488,032	0.1%	Rank history: #93 in FY2022, #99 in FY2023 and not on the FY2024–FY2025 lists; down 14 since FY2020.
87	Global Research and Technology Corporation Top agencies Navy (Department of the Navy)	$483,084	0.1%	Rank history: not on the FY2022–FY2025 lists; down 34 since FY2020.
88	Elite Aluminum Corp Top agencies VA (Department of Veterans Affairs)	$479,000	0.1%	Rank history: not on the FY2022 list, #73 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
89	Gemini TECH Services LLC Top agencies USAF (Department of the Air Force)	$466,240	0.1%	Rank history: #91 in FY2022, #91 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
90	Interagency Readiness Solutions, LLC Top agencies Army (Department of the Army)	$438,187	0.1%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
91	Lr-Associates, LLC Top agencies Army (Department of the Army)	$418,917	0.1%	Rank history: #96 in FY2022, #94 in FY2023 and not on the FY2024–FY2025 lists; down 8 since FY2020.
92	Pride Industries Top agencies DMA (Defense Media Activity)	$383,046	<0.1%	Rank history: not on the FY2022 list, #98 in FY2023, #98 in FY2024 and #97 in FY2025; up 3 since FY2020.
93	Bovis International Top agencies DOS (Department of State)	$377,000	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
94	Goodwill of Central and Coastal Virginia, Inc. Through Goodwill Services Inc. Top agencies Navy (Department of the Navy)	$371,141	<0.1%	Rank history: #22 in FY2022, #22 in FY2023 and not on the FY2024–FY2025 lists; down 80 since FY2020.
95	Premier Professional Systems Inc. Top agencies Army (Department of the Army)	$370,750	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
96	Systec Group LLC Top agencies USAF (Department of the Air Force)	$354,547	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
97	Chaise Management Group LLC Top agencies DHS (Department of Homeland Security)	$349,937	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Seaboard Corporation Through Jacintoport International LLC Top agencies USAID (US Agency for International Development)	$337,261	<0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Arservices, Limited Top agencies DTRA (Defense Threat Reduction Agency)	$328,764	<0.1%	Rank history: not on the FY2022–FY2025 lists; up 2 since FY2020.
100	Cayuse Native Hawaiian Veterans, LLC Top agencies Navy (Department of the Navy)	$296,848	<0.1%	Rank history: not on the FY2022–FY2024 lists and #98 in FY2025; new, not ranked in FY2020.

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100 of 244 contractors listed here. See the rest on GovTribe.

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 $811 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. 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 NAICS 493110 contractors in FY2021?

1. Life Science Logistics LLC ($76M), 2. Henry Schein, Inc. ($72.7M), 3. Cardinal Health, Inc. ($60.5M), 4. Amentum Services, Inc. ($56M), 5. Global Asset Technologies LLC ($48.2M), 6. Valiant Technical Services Inc. ($42.6M), 7. Technica LLC ($35.5M), 8. Serco North America (Holdings) Inc ($29.5M), 9. Iron Mountain Incorporated ($29.2M), 10. Synergy Logistics Services II LLC ($27.2M).

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