Top 100 Contractors in PSC 4220: Marine Lifesaving and Diving Equipment, Aug 2025–Jul 2026

Name: Top 100 Contractors in PSC 4220: Marine Lifesaving and Diving Equipment, Aug 2025–Jul 2026
Creator: GovTribe
License: https://creativecommons.org/licenses/by/4.0/

Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe

The latest 12 months. See the newest fiscal year's list: Top Contractors in PSC 4220: Marine Lifesaving and Diving Equipment, FY2025.

The top 10 won 100% of PSC 4220 contract dollars from August 2025 through July 2026

Contract obligations: $10,109,451,822 Net of deobligations, by contracts coded PSC 4220
Contractors: 137 Parent companies with an obligation
Largest contractor: Atlantic Diving Supply, Inc. $6.47 billion, 64.0% of obligations
Data as of: Nov 5, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Atlantic Diving Supply, Inc. Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force) DOJ (Department of Justice)	$6,468,502,886	64.0%	Rank history: #6 in FY2021, #13 in FY2022, not on the FY2023 list, #1 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	W S Darley & Co Top agencies DLA (Defense Logistics Agency) DOJ (Department of Justice)	$2,504,068,629	24.8%	Rank history: #2 in FY2021, #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since Aug 2024–Jul 2025.
3	Supplycore LLC Top agencies DLA (Defense Logistics Agency)	$640,534,784	6.3%	Rank history: #5 in FY2021, #5 in FY2022, #4 in FY2023, #4 in FY2024 and #4 in FY2025; up 1 since Aug 2024–Jul 2025.
4	Noble Supply & Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$438,269,766	4.3%	Rank history: #4 in FY2021, #3 in FY2022, #3 in FY2023, #3 in FY2024 and #3 in FY2025; down 1 since Aug 2024–Jul 2025.
5	RFD Beaufort Inc. 2 awardees Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$15,429,821	0.2%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #11 in FY2025; up 6 since Aug 2024–Jul 2025.
6	Mustang Survival Mfg, Inc. 2 awardees Top agencies Army (Department of the Army) DHS (Department of Homeland Security) GSA (General Services Administration)	$10,367,854	0.1%	Rank history: not on the FY2021 list, #39 in FY2022, #15 in FY2023, #12 in FY2024 and #5 in FY2025; down 1 since Aug 2024–Jul 2025.
7	Switlik Parachute Company, Inc. Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$3,287,059	<0.1%	Rank history: #13 in FY2021, #9 in FY2022, #9 in FY2023, #8 in FY2024 and #8 in FY2025; up 1 since Aug 2024–Jul 2025.
8	ILC Astrospace LLC Top agencies Navy (Department of the Navy)	$3,137,584	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
9	SAFRAN Through Air Cruisers Company, LLC Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$2,642,045	<0.1%	Rank history: #11 in FY2021, #11 in FY2022, #16 in FY2023, #7 in FY2024 and #7 in FY2025; down 2 since Aug 2024–Jul 2025.
10	Consortium Management Group, Inc. Top agencies Navy (Department of the Navy)	$2,103,075	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
11	Leland Limited Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$2,101,144	<0.1%	Rank history: #31 in FY2021, #16 in FY2022, #20 in FY2023, #6 in FY2024 and #14 in FY2025; up 5 since Aug 2024–Jul 2025.
12	Inflation Systems, Inc. Top agencies DLA (Defense Logistics Agency)	$1,821,862	<0.1%	Rank history: #21 in FY2021, #21 in FY2022, #10 in FY2023, #25 in FY2024 and #17 in FY2025; up 18 since Aug 2024–Jul 2025.
13	Airborne Supply Inc. Top agencies DLA (Defense Logistics Agency)	$1,266,746	<0.1%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #31 in FY2025; up 69 since Aug 2024–Jul 2025.
14	Patriot3, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,131,541	<0.1%	Rank history: not on the FY2021 list, #12 in FY2022, #14 in FY2023, #10 in FY2024 and #19 in FY2025; up 10 since Aug 2024–Jul 2025.
15	BAE Systems PLC Through BAE Systems Land & Armaments L.P. Top agencies DLA (Defense Logistics Agency)	$1,104,367	<0.1%	Rank history: #25 in FY2021, #23 in FY2022, #8 in FY2023, #17 in FY2024 and #9 in FY2025; new, not ranked in Aug 2024–Jul 2025.
16	Viking Life-Saving Equipment (America), Inc. Top agencies Navy (Department of the Navy)	$1,080,570	<0.1%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #16 in FY2025; down 2 since Aug 2024–Jul 2025.
17	Submerged Direct LLC Top agencies Navy (Department of the Navy)	$964,091	<0.1%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023, #38 in FY2024 and #34 in FY2025; up 5 since Aug 2024–Jul 2025.
18	Defense Venture Holdings, LLC Top agencies DLA (Defense Logistics Agency)	$759,130	<0.1%	Rank history: #30 in FY2021, #27 in FY2022, #19 in FY2023, #16 in FY2024 and #15 in FY2025; down 3 since Aug 2024–Jul 2025.
19	Capewell Aerial Systems LLC Through Aerial Machine & Tool Corporation Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security)	$755,013	<0.1%	Rank history: #22 in FY2021, #30 in FY2022, #42 in FY2023, #29 in FY2024 and #20 in FY2025; up 4 since Aug 2024–Jul 2025.
20	Red Orange North America Inc. Top agencies USAF (Department of the Air Force)	$720,835	<0.1%	Rank history: not on the FY2021–FY2024 lists and #18 in FY2025; new, not ranked in Aug 2024–Jul 2025.
21	Life Support International Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army)	$652,740	<0.1%	Rank history: #52 in FY2021, #78 in FY2022, not on the FY2023 list, #57 in FY2024 and #12 in FY2025; down 8 since Aug 2024–Jul 2025.
22	Lotususa, Inc. Top agencies DLA (Defense Logistics Agency) Army (Department of the Army)	$528,578	<0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; new, not ranked in Aug 2024–Jul 2025.
23	Safety & Security International, Inc. Top agencies DLA (Defense Logistics Agency)	$515,704	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
24	Sovax Corp Top agencies Navy (Department of the Navy)	$464,828	<0.1%	Rank history: #18 in FY2021, #18 in FY2022, #23 in FY2023, #28 in FY2024 and #46 in FY2025; up 13 since Aug 2024–Jul 2025.
25	Extreme Exposure, Inc. Top agencies Navy (Department of the Navy)	$350,990	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
26	Aerial Machine & Tool Corporation Top agencies DLA (Defense Logistics Agency)	$345,650	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
27	Ocenco Inc. 2 awardees, including Interspiro Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$344,961	<0.1%	Rank history: #19 in FY2021, #31 in FY2022, #13 in FY2023, #23 in FY2024 and #10 in FY2025; down 18 since Aug 2024–Jul 2025.
28	Gentex Corporation Top agencies DLA (Defense Logistics Agency)	$325,735	<0.1%	Rank history: #15 in FY2021, #14 in FY2022, #63 in FY2023, #14 in FY2024 and #13 in FY2025; down 16 since Aug 2024–Jul 2025.
29	MJL Enterprises, LLC Top agencies DLA (Defense Logistics Agency)	$321,196	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
30	Sahar Group, LLC Top agencies DHS (Department of Homeland Security)	$300,000	<0.1%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, #34 in FY2024 and #29 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Triton Systems, Inc. Top agencies Navy (Department of the Navy)	$299,982	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
32	American Pacific Plastic Fabricators, Inc. Top agencies DLA (Defense Logistics Agency)	$269,259	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
33	D3 Diving LLC Top agencies Navy (Department of the Navy)	$264,290	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 76 since Aug 2024–Jul 2025.
34	Harry Miller Co LLC Top agencies DLA (Defense Logistics Agency)	$258,581	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
35	Shark Marine Technologies Inc. Top agencies Navy (Department of the Navy)	$252,314	<0.1%	Rank history: not on the FY2021 list, #50 in FY2022, #24 in FY2023, #41 in FY2024 and #38 in FY2025; new, not ranked in Aug 2024–Jul 2025.
36	Kampi Components Co Inc. Top agencies DLA (Defense Logistics Agency)	$247,178	<0.1%	Rank history: #20 in FY2021, #57 in FY2022, #65 in FY2023, not on the FY2024 list and #32 in FY2025; up 31 since Aug 2024–Jul 2025.
37	Lifesaving Systems LLC Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$246,772	<0.1%	Rank history: #43 in FY2021, #36 in FY2022, #27 in FY2023, #32 in FY2024 and #25 in FY2025; down 11 since Aug 2024–Jul 2025.
38	ADI Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$234,759	<0.1%	Rank history: #16 in FY2021, #17 in FY2022, #11 in FY2023, #59 in FY2024 and not on the FY2025 list; up 6 since Aug 2024–Jul 2025.
39	Patten Co., Inc. Top agencies DLA (Defense Logistics Agency)	$195,021	<0.1%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; up 46 since Aug 2024–Jul 2025.
40	Henderson Aquatics Inc. Top agencies DLA (Defense Logistics Agency)	$174,026	<0.1%	Rank history: not on the FY2021–FY2023 lists, #51 in FY2024 and #45 in FY2025; up 5 since Aug 2024–Jul 2025.
41	Mark G. Miller, Inc. Top agencies DLA (Defense Logistics Agency)	$150,810	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
42	Atlas Devices LLC Top agencies Army (Department of the Army)	$148,024	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
43	Dts-P&L JV Through Darbonnier Tactical Supply LLC Top agencies DLA (Defense Logistics Agency)	$139,619	<0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; up 101 since Aug 2024–Jul 2025.
44	Firstspear, LLC Top agencies Navy (Department of the Navy)	$137,186	<0.1%	Rank history: #14 in FY2021, #26 in FY2022, #26 in FY2023, #26 in FY2024 and #22 in FY2025; down 25 since Aug 2024–Jul 2025.
45	Govparts LLC Top agencies DLA (Defense Logistics Agency)	$120,106	<0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 45 since Aug 2024–Jul 2025.
46	Federal Resources Supply Company, LLC Top agencies Navy (Department of the Navy)	$116,991	<0.1%	Rank history: #3 in FY2021, #6 in FY2022, not on the FY2023–FY2024 lists and #24 in FY2025; down 26 since Aug 2024–Jul 2025.
47	American Diving Supply LLC Top agencies DLA (Defense Logistics Agency) DHS (Department of Homeland Security) Navy (Department of the Navy)	$112,542	<0.1%	Rank history: #48 in FY2021, #45 in FY2022, #25 in FY2023, #30 in FY2024 and #28 in FY2025; down 20 since Aug 2024–Jul 2025.
48	House of Scuba, Inc. Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$111,343	<0.1%	Rank history: #58 in FY2021, #25 in FY2022, not on the FY2023 list, #56 in FY2024 and #42 in FY2025; down 7 since Aug 2024–Jul 2025.
49	Tcom, L.P. Through Aerostar International, LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$110,871	<0.1%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; new, not ranked in Aug 2024–Jul 2025.
50	Chase Supply, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$102,852	<0.1%	Rank history: not on the FY2021 list, #15 in FY2022, #36 in FY2023, not on the FY2024 list and #51 in FY2025; up 6 since Aug 2024–Jul 2025.
51	Omni Defense Technologies Corp Top agencies USAF (Department of the Air Force)	$93,750	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
52	Amron International Inc. Top agencies Navy (Department of the Navy) Army (Department of the Army) DLA (Defense Logistics Agency)	$77,178	<0.1%	Rank history: #36 in FY2021, #41 in FY2022, #38 in FY2023, #37 in FY2024 and #39 in FY2025; down 19 since Aug 2024–Jul 2025.
53	Dick Medical Supply Inc. Top agencies DLA (Defense Logistics Agency)	$77,100	<0.1%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; new, not ranked in Aug 2024–Jul 2025.
54	S&G Trading, Limited Liability Company Top agencies DLA (Defense Logistics Agency)	$75,433	<0.1%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Aug 2024–Jul 2025.
55	Dive Lab, Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency)	$73,743	<0.1%	Rank history: #60 in FY2021, not on the FY2022–FY2023 lists, #49 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
56	United Sar, Inc. Top agencies DLA (Defense Logistics Agency)	$72,590	<0.1%	Rank history: #49 in FY2021, #46 in FY2022, #53 in FY2023, #40 in FY2024 and #66 in FY2025; down 13 since Aug 2024–Jul 2025.
57	Tiax LLC Top agencies DLA (Defense Logistics Agency)	$67,963	<0.1%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #23 in FY2025; down 39 since Aug 2024–Jul 2025.
58	American Truck & Bus, Inc. Top agencies DOJ (Department of Justice)	$64,425	<0.1%	Rank history: not on the FY2021–FY2024 lists and #58 in FY2025; new, not ranked in Aug 2024–Jul 2025.
59	Dive World LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$61,647	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
60	Afeco, Inc. Through Tinosa, Inc. Top agencies Navy (Department of the Navy)	$58,371	<0.1%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; new, not ranked in Aug 2024–Jul 2025.
61	Samstar LLC Top agencies Navy (Department of the Navy)	$52,785	<0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; new, not ranked in Aug 2024–Jul 2025.
62	Bighorn Solutions LLC Top agencies DLA (Defense Logistics Agency)	$52,764	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
63	S I T Corporation Top agencies DHS (Department of Homeland Security)	$50,000	<0.1%	Rank history: #81 in FY2021, #72 in FY2022, not on the FY2023–FY2024 lists and #33 in FY2025; down 31 since Aug 2024–Jul 2025.
64	Vastglobe Logistics LLC Top agencies Army (Department of the Army)	$44,058	<0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Aug 2024–Jul 2025.
65	Northrop Grumman Systems Corporation Top agencies DLA (Defense Logistics Agency)	$41,812	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
66	Larkos Packing and Distribution Inc. Top agencies DLA (Defense Logistics Agency)	$39,423	<0.1%	Rank history: not on the FY2021–FY2022 lists, #66 in FY2023, #69 in FY2024 and #62 in FY2025; down 5 since Aug 2024–Jul 2025.
67	The Entwistle Company LLC Top agencies DLA (Defense Logistics Agency)	$37,760	<0.1%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; down 15 since Aug 2024–Jul 2025.
68	Specialty Products & Services, Inc. Top agencies DLA (Defense Logistics Agency)	$36,246	<0.1%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 71 since Aug 2024–Jul 2025.
69	Black Bay Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$35,208	<0.1%	Rank history: #47 in FY2021, #55 in FY2022, #30 in FY2023, #24 in FY2024 and not on the FY2025 list; down 38 since Aug 2024–Jul 2025.
70	Diving Unlimited International Inc. Top agencies DHS (Department of Homeland Security) Navy (Department of the Navy)	$33,398	<0.1%	Rank history: #75 in FY2021, not on the FY2022 list, #64 in FY2023, #86 in FY2024 and #57 in FY2025; down 11 since Aug 2024–Jul 2025.
71	Weckworth Manufacturing, Inc. Top agencies DLA (Defense Logistics Agency)	$32,915	<0.1%	Rank history: #55 in FY2021, #22 in FY2022, #22 in FY2023, not on the FY2024 list and #27 in FY2025; down 46 since Aug 2024–Jul 2025.
72	Global Logistics Strategies Inc. Top agencies DLA (Defense Logistics Agency)	$32,333	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
73	Mig Gov, LLC Top agencies USAF (Department of the Air Force)	$31,749	<0.1%	Rank history: not on the FY2021 list, #98 in FY2022, #21 in FY2023, #33 in FY2024 and not on the FY2025 list; down 20 since Aug 2024–Jul 2025.
74	Barnes Real Estate Solutions LLC Top agencies DLA (Defense Logistics Agency)	$31,443	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
75	Donatini, Inc. Top agencies DHS (Department of Homeland Security)	$30,797	<0.1%	Rank history: #53 in FY2021, #71 in FY2022, not on the FY2023 list, #42 in FY2024 and #79 in FY2025; down 17 since Aug 2024–Jul 2025.
76	MMC Metrology Lab, Inc. Top agencies Navy (Department of the Navy)	$30,700	<0.1%	Rank history: not on the FY2021 list, #69 in FY2022 and not on the FY2023–FY2025 lists; up 54 since Aug 2024–Jul 2025.
77	Stravon Systems LLC Top agencies Navy (Department of the Navy)	$30,602	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
78	Phoenix Trading & Contracting LLC Top agencies USAF (Department of the Air Force)	$30,598	<0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; new, not ranked in Aug 2024–Jul 2025.
79	Sea Safety International, Inc. Top agencies DHS (Department of Homeland Security)	$29,715	<0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; down 6 since Aug 2024–Jul 2025.
80	Airborne Outfitters LLC Top agencies DLA (Defense Logistics Agency)	$29,441	<0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Aug 2024–Jul 2025.
81	Logistico LLC Top agencies DLA (Defense Logistics Agency)	$23,920	<0.1%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
82	Equipment Solutions & Personnel, L.L.C. Top agencies DLA (Defense Logistics Agency)	$22,537	<0.1%	Rank history: not on the FY2021 list, #33 in FY2022, #41 in FY2023, not on the FY2024 list and #56 in FY2025; down 27 since Aug 2024–Jul 2025.
83	TECH Nexuses, Inc. Top agencies VA (Department of Veterans Affairs)	$22,152	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
84	Undersea Systems International, Inc. Top agencies Navy (Department of the Navy)	$21,608	<0.1%	Rank history: #66 in FY2021, #60 in FY2022, not on the FY2023 list, #80 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
85	Advance Safety Equipment Co. Top agencies DLA (Defense Logistics Agency)	$20,105	<0.1%	Rank history: #57 in FY2021, #34 in FY2022, #12 in FY2023, #19 in FY2024 and #21 in FY2025; down 68 since Aug 2024–Jul 2025.
86	Jlogistics LLC Top agencies USAF (Department of the Air Force)	$19,704	<0.1%	Rank history: not on the FY2021–FY2024 lists and #96 in FY2025; new, not ranked in Aug 2024–Jul 2025.
87	Bauer Compressors, Inc. Top agencies Navy (Department of the Navy)	$18,918	<0.1%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; up 7 since Aug 2024–Jul 2025.
88	Divers Supply Inc. Top agencies DHS (Department of Homeland Security)	$18,461	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
89	Apexx Sales Inc. Top agencies Army (Department of the Army)	$16,904	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
90	Critical Procurement LLC Top agencies DLA (Defense Logistics Agency)	$16,687	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
91	Tandemloc Inc. Top agencies Navy (Department of the Navy)	$16,121	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
92	Seva Technical Services Inc. Top agencies DHS (Department of Homeland Security)	$15,561	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
93	Basic Rubber and Plastics Co. Top agencies DLA (Defense Logistics Agency)	$15,496	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
94	Equipment Parts Sales Top agencies DLA (Defense Logistics Agency)	$15,328	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 52 since Aug 2024–Jul 2025.
95	Phoenix Trading Inc. Top agencies DLA (Defense Logistics Agency)	$14,334	<0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; up 33 since Aug 2024–Jul 2025.
96	Scubadelphia, LLC Top agencies DLA (Defense Logistics Agency)	$12,744	<0.1%	Rank history: #79 in FY2021, #58 in FY2022, #58 in FY2023, #63 in FY2024 and not on the FY2025 list; up 29 since Aug 2024–Jul 2025.
97	Head Usa, Inc. Top agencies Navy (Department of the Navy)	$12,740	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
98	Jgils, LLC Top agencies DLA (Defense Logistics Agency)	$12,734	<0.1%	Rank history: #85 in FY2021 and not on the FY2022–FY2025 lists; up 38 since Aug 2024–Jul 2025.
99	Abico LLC Top agencies DLA (Defense Logistics Agency)	$12,420	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
100	V2X, Inc. Through V2X Systems LLC Top agencies DLA (Defense Logistics Agency)	$11,875	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.

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100 of 137 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 $10.1 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

Who were the top 10 PSC 4220 contractors in Aug 2025–Jul 2026?

1. Atlantic Diving Supply, Inc. ($6.47B), 2. W S Darley & Co ($2.5B), 3. Supplycore LLC ($641M), 4. Noble Supply & Logistics, LLC ($438M), 5. RFD Beaufort Inc. ($15.4M), 6. Mustang Survival Mfg, Inc. ($10.4M), 7. Switlik Parachute Company, Inc. ($3.29M), 8. ILC Astrospace LLC ($3.14M), 9. SAFRAN ($2.64M), 10. Consortium Management Group, Inc. ($2.1M).

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