Top 100 Contractors in PSC H1: Quality Control Services, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC H1: Quality Control Services, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 67% of PSC H1 contract dollars from July 2025 through June 2026

Contract obligations: $285,165,978 Net of deobligations, by contracts coded PSC H1 or a code under it
Contractors: 525 Parent companies with an obligation
Largest contractor: GDC Middle East Company $170 million, 43.7% 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	GDC Middle East Company Top agencies Army (Department of the Army)	$170,358,017	43.7%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Peckham Vocational Industries Inc. Top agencies Army (Department of the Army)	$70,772,269	18.1%	Rank history: #4 in FY2021, #4 in FY2022, #4 in FY2023, #3 in FY2024 and #3 in FY2025; up 4 since Jul 2024–Jun 2025.
3	Sierra Nevada Company, LLC Top agencies USAF (Department of the Air Force)	$4,780,185	1.2%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #6 in FY2025; up 5 since Jul 2024–Jun 2025.
4	Intertek USA Inc. Top agencies DLA (Defense Logistics Agency)	$2,774,757	0.7%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #7 in FY2025; up 6 since Jul 2024–Jun 2025.
5	Maryland Department of Health Top agencies HHS (Department of Health and Human Services)	$2,306,482	0.6%	Rank history: not on the FY2021–FY2023 lists, #21 in FY2024 and not on the FY2025 list; up 18 since Jul 2024–Jun 2025.
6	Siemens Industry Inc. Top agencies Smithsonian (Smithsonian Institution) VA (Department of Veterans Affairs) USDA (Department of Agriculture)	$2,150,102	0.6%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #16 in FY2025; up 43 since Jul 2024–Jun 2025.
7	Phigenics LLC Top agencies VA (Department of Veterans Affairs)	$2,070,802	0.5%	Rank history: not on the FY2021–FY2023 lists, #12 in FY2024 and #9 in FY2025; up 6 since Jul 2024–Jun 2025.
8	GA Mechanical Inc. Top agencies Army (Department of the Army)	$2,005,829	0.5%	Rank history: not on the FY2021 list, #29 in FY2022, #11 in FY2023, #13 in FY2024 and #13 in FY2025; up 7 since Jul 2024–Jun 2025.
9	United Paradyne Corporation Top agencies Navy (Department of the Navy)	$1,747,468	0.4%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; up 12 since Jul 2024–Jun 2025.
10	New Jersey Department of Health Top agencies HHS (Department of Health and Human Services)	$1,725,025	0.4%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #10 in FY2025; up 30 since Jul 2024–Jun 2025.
11	Instrumentum California, LLC Top agencies VA (Department of Veterans Affairs)	$1,716,000	0.4%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; new, not ranked in Jul 2024–Jun 2025.
12	North Carolina Department of Health & Human Services Top agencies HHS (Department of Health and Human Services)	$1,699,777	0.4%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; up 19 since Jul 2024–Jun 2025.
13	Colorado Department of Public Health & Environment Top agencies HHS (Department of Health and Human Services)	$1,573,457	0.4%	Rank history: #93 in FY2021, #93 in FY2022, not on the FY2023 list, #17 in FY2024 and #15 in FY2025; down 1 since Jul 2024–Jun 2025.
14	California Department of Public Health Top agencies HHS (Department of Health and Human Services)	$1,366,033	0.4%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and #12 in FY2025; up 2 since Jul 2024–Jun 2025.
15	Ohio Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$1,281,019	0.3%	Rank history: not on the FY2021–FY2023 lists, #46 in FY2024 and #23 in FY2025; up 21 since Jul 2024–Jun 2025.
16	Washington State Patrol Through State of Washington Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$1,201,216	0.3%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #25 in FY2025; up 23 since Jul 2024–Jun 2025.
17	Doc Development, Inc. Top agencies USAF (Department of the Air Force)	$1,199,039	0.3%	Rank history: not on the FY2021 list, #53 in FY2022, #35 in FY2023, #36 in FY2024 and #27 in FY2025; up 20 since Jul 2024–Jun 2025.
18	State of Iowa 2 awardees, including Iowa Department of Revenue and Iowa Department of Agriculture and Land Stewardship Top agencies HHS (Department of Health and Human Services)	$1,192,283	0.3%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and #24 in FY2025; up 2 since Jul 2024–Jun 2025.
19	Michigan Department of Agriculture and Rural Development Top agencies HHS (Department of Health and Human Services)	$1,096,815	0.3%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #28 in FY2025; up 24 since Jul 2024–Jun 2025.
20	West Virginia Dept of Human Services Top agencies HHS (Department of Health and Human Services)	$1,091,194	0.3%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #29 in FY2025; down 2 since Jul 2024–Jun 2025.
21	Massachusetts Department of Public Health Top agencies HHS (Department of Health and Human Services)	$985,801	0.3%	Rank history: not on the FY2021–FY2023 lists, #63 in FY2024 and #32 in FY2025; up 4 since Jul 2024–Jun 2025.
22	Shabas Solutions LLC Top agencies HHS (Department of Health and Human Services)	$958,434	0.2%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #20 in FY2025; up 10 since Jul 2024–Jun 2025.
23	Alcoholic Beverage Laws Enforcement Commission Top agencies HHS (Department of Health and Human Services)	$957,690	0.2%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; new, not ranked in Jul 2024–Jun 2025.
24	State of Illinois 2 awardees, including Department of Public Health Illinois and Illinois Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$940,769	0.2%	Rank history: #38 in FY2021, #15 in FY2022, #17 in FY2023, #60 in FY2024 and #18 in FY2025; up 9 since Jul 2024–Jun 2025.
25	Hawaii Department of Health Top agencies HHS (Department of Health and Human Services)	$915,544	0.2%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and not on the FY2025 list; up 41 since Jul 2024–Jun 2025.
26	Aviate Enterprises, Inc. Top agencies USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$878,483	0.2%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023, #16 in FY2024 and #22 in FY2025; down 7 since Jul 2024–Jun 2025.
27	The Impact Group LLC Top agencies Army (Department of the Army)	$868,653	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; up 76 since Jul 2024–Jun 2025.
28	Agati, Inc. Top agencies Army (Department of the Army)	$840,580	0.2%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; new, not ranked in Jul 2024–Jun 2025.
29	Industries for the Blind and Visually Impaired, Inc. Top agencies USAF (Department of the Air Force)	$818,257	0.2%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; up 21 since Jul 2024–Jun 2025.
30	Sentinel Services, LLC Top agencies VA (Department of Veterans Affairs)	$746,930	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
31	RTX Corporation Through Rockwell Collins, Inc. Top agencies Army (Department of the Army)	$722,118	0.2%	Rank history: #6 in FY2021, #7 in FY2022, #26 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
32	State of Georgia Department of Revenue Top agencies HHS (Department of Health and Human Services)	$693,671	0.2%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #41 in FY2025; up 16 since Jul 2024–Jun 2025.
33	Tate Engineering Systems, Inc. Top agencies VA (Department of Veterans Affairs)	$683,295	0.2%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
34	Liona Enterprises Inc Top agencies DHS (Department of Homeland Security)	$676,100	0.2%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023, not on the FY2024 list and #54 in FY2025; up 90 since Jul 2024–Jun 2025.
35	Venergy Group LLC Top agencies VA (Department of Veterans Affairs)	$670,042	0.2%	Rank history: #78 in FY2021, #67 in FY2022, #82 in FY2023, #85 in FY2024 and #47 in FY2025; up 20 since Jul 2024–Jun 2025.
36	North Carolina Department of Agriculture & Consumer Services Top agencies HHS (Department of Health and Human Services)	$655,040	0.2%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and #43 in FY2025; up 20 since Jul 2024–Jun 2025.
37	Public Protection Cabinet Top agencies HHS (Department of Health and Human Services)	$650,311	0.2%	Rank history: not on the FY2021–FY2023 lists, #62 in FY2024 and #37 in FY2025; down 10 since Jul 2024–Jun 2025.
38	State of Rhode Island 2 awardees, including RI Dept. of Behavioral Healthcare Devel and State of Rhode Island Department of Health Top agencies HHS (Department of Health and Human Services)	$641,745	0.2%	Rank history: not on the FY2021 list, #59 in FY2022, #57 in FY2023, #65 in FY2024 and not on the FY2025 list; up 26 since Jul 2024–Jun 2025.
39	State of Montana Department of Health and Human Services Top agencies HHS (Department of Health and Human Services)	$599,785	0.2%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and #71 in FY2025; up 41 since Jul 2024–Jun 2025.
40	Yulista Integrated Solutions, LLC Top agencies Army (Department of the Army)	$587,051	0.2%	Rank history: not on the FY2021–FY2023 lists, #95 in FY2024 and #46 in FY2025; up 37 since Jul 2024–Jun 2025.
41	Product Evaluation Systems, Llc. Top agencies NASA (National Aeronautics and Space Administration)	$574,735	0.1%	Rank history: not on the FY2021–FY2025 lists; up 113 since Jul 2024–Jun 2025.
42	Hyperion Biotechnology, Inc. Top agencies VA (Department of Veterans Affairs)	$529,348	0.1%	Rank history: #97 in FY2021, #92 in FY2022, not on the FY2023 list, #71 in FY2024 and #42 in FY2025; up 15 since Jul 2024–Jun 2025.
43	Department of State Health Services Top agencies HHS (Department of Health and Human Services)	$526,070	0.1%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #53 in FY2025; up 3 since Jul 2024–Jun 2025.
44	Atlantic First Industries Corporation Top agencies VA (Department of Veterans Affairs)	$517,843	0.1%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #31 in FY2025; down 10 since Jul 2024–Jun 2025.
45	Oregon Dept of Agriculture Top agencies HHS (Department of Health and Human Services)	$516,680	0.1%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	Amber Infrastructure LLC Through City Light & Power Aberdeen, LLC Top agencies USAF (Department of the Air Force)	$514,890	0.1%	Rank history: not on the FY2021–FY2024 lists and #56 in FY2025; new, not ranked in Jul 2024–Jun 2025.
47	Seneca Federal Solutions, LLC Top agencies Army (Department of the Army)	$504,446	0.1%	Rank history: not on the FY2021–FY2023 lists, #81 in FY2024 and #57 in FY2025; up 22 since Jul 2024–Jun 2025.
48	Trustees of Indiana University Top agencies HHS (Department of Health and Human Services)	$494,614	0.1%	Rank history: not on the FY2021 list, #69 in FY2022, not on the FY2023 list, #91 in FY2024 and not on the FY2025 list; up 70 since Jul 2024–Jun 2025.
49	Kansas Department of Revenue Top agencies HHS (Department of Health and Human Services)	$489,612	0.1%	Rank history: not on the FY2021–FY2023 lists, #79 in FY2024 and not on the FY2025 list; up 56 since Jul 2024–Jun 2025.
50	Serene Dwelling LLC Top agencies USAF (Department of the Air Force)	$464,340	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
51	Virginia Department of Agriculture and Consumer Services Top agencies HHS (Department of Health and Human Services)	$462,063	0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; up 20 since Jul 2024–Jun 2025.
52	General and Mechanical Services, LLC Top agencies DOI (Department of the Interior)	$458,268	0.1%	Rank history: #81 in FY2021, not on the FY2022 list, #74 in FY2023, #100 in FY2024 and #66 in FY2025; up 31 since Jul 2024–Jun 2025.
53	Health Systems Sciences, LLC Top agencies VA (Department of Veterans Affairs)	$456,379	0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; up 91 since Jul 2024–Jun 2025.
54	HGS Engineering Inc. Top agencies VA (Department of Veterans Affairs)	$451,688	0.1%	Rank history: #52 in FY2021, #82 in FY2022, not on the FY2023–FY2024 lists and #72 in FY2025; up 40 since Jul 2024–Jun 2025.
55	New Hampshire Liquor Commission Top agencies HHS (Department of Health and Human Services)	$448,256	0.1%	Rank history: not on the FY2021–FY2023 lists, #86 in FY2024 and not on the FY2025 list; up 5 since Jul 2024–Jun 2025.
56	Quest Diagnostics Incorporated Top agencies VA (Department of Veterans Affairs)	$431,101	0.1%	Rank history: not on the FY2021 list, #38 in FY2022, #50 in FY2023, #99 in FY2024 and #59 in FY2025; up 14 since Jul 2024–Jun 2025.
57	Attorney General's Office, Mississippi Top agencies HHS (Department of Health and Human Services)	$429,614	0.1%	Rank history: not on the FY2021–FY2023 lists, #52 in FY2024 and #38 in FY2025; down 33 since Jul 2024–Jun 2025.
58	Fluid Handling LLC Through Evoqua Water Technologies LLC Top agencies VA (Department of Veterans Affairs)	$428,661	0.1%	Rank history: not on the FY2021–FY2025 lists; up 123 since Jul 2024–Jun 2025.
59	Wabtec Inspection Technologies, Inc. Top agencies Navy (Department of the Navy)	$428,542	0.1%	Rank history: not on the FY2021–FY2024 lists and #65 in FY2025; new, not ranked in Jul 2024–Jun 2025.
60	Energy Systems Group, LLC Top agencies VA (Department of Veterans Affairs)	$416,409	0.1%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; down 22 since Jul 2024–Jun 2025.
61	Low Voltage Specialty, Inc. Top agencies VA (Department of Veterans Affairs)	$415,200	0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Jul 2024–Jun 2025.
62	Tech62 Inc. Top agencies VA (Department of Veterans Affairs)	$411,436	0.1%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and #51 in FY2025; up 1 since Jul 2024–Jun 2025.
63	LBT Diagnostic Radiation Physics Consulting Ltd Top agencies VA (Department of Veterans Affairs)	$411,088	0.1%	Rank history: not on the FY2021–FY2025 lists; up 76 since Jul 2024–Jun 2025.
64	The Northridge Group, Inc. Top agencies CFPB (Consumer Financial Protection Bureau)	$401,141	0.1%	Rank history: #60 in FY2021, #54 in FY2022, #49 in FY2023, #82 in FY2024 and #50 in FY2025; up 81 since Jul 2024–Jun 2025.
65	Bear Environmental LLC Top agencies USAF (Department of the Air Force)	$400,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; new, not ranked in Jul 2024–Jun 2025.
66	Missouri Department of Health & Senior Services Top agencies HHS (Department of Health and Human Services)	$389,585	0.1%	Rank history: not on the FY2021 list, #98 in FY2022, not on the FY2023–FY2024 lists and #73 in FY2025; up 16 since Jul 2024–Jun 2025.
67	Lancaster Foundry Supply Company Inc. Top agencies Navy (Department of the Navy)	$389,056	0.1%	Rank history: not on the FY2021–FY2025 lists; up 100 since Jul 2024–Jun 2025.
68	Department of Agriculture & Consumer Services Florida Top agencies HHS (Department of Health and Human Services)	$382,360	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 16 since Jul 2024–Jun 2025.
69	Andy Ramos Electric LLC Top agencies VA (Department of Veterans Affairs)	$378,520	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
70	Cintas Corporation NO. 2 Top agencies VA (Department of Veterans Affairs)	$377,780	0.1%	Rank history: not on the FY2021–FY2023 lists, #98 in FY2024 and #74 in FY2025; up 11 since Jul 2024–Jun 2025.
71	JNV Group Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$369,537	0.1%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; up 4 since Jul 2024–Jun 2025.
72	Blue Wave Ultrasonics Inc. Top agencies NASA (National Aeronautics and Space Administration)	$368,730	0.1%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; new, not ranked in Jul 2024–Jun 2025.
73	I-2-I Solutions, Inc. Top agencies VA (Department of Veterans Affairs) DHS (Department of Homeland Security)	$359,924	0.1%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; down 20 since Jul 2024–Jun 2025.
74	The Leland Stanford Junior University Top agencies VA (Department of Veterans Affairs)	$343,062	0.1%	Rank history: #99 in FY2021 and not on the FY2022–FY2025 lists; up 222 since Jul 2024–Jun 2025.
75	Johnson Controls Inc 3 awardees, including Johnson Controls Fire Protection LP and Johnson Controls Building Solutions, LLC Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) HHS (Department of Health and Human Services)	$341,454	0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; up 25 since Jul 2024–Jun 2025.
76	A-Bear Consult LLC Top agencies VA (Department of Veterans Affairs)	$338,006	0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; up 14 since Jul 2024–Jun 2025.
77	The Simple VUE LLC Top agencies DOJ (Department of Justice)	$332,122	0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; up 12 since Jul 2024–Jun 2025.
78	Food & Agriculture California Department of Through California Department of Food & Agriculture Top agencies HHS (Department of Health and Human Services)	$329,563	0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023, not on the FY2024 list and #81 in FY2025; up 20 since Jul 2024–Jun 2025.
79	BCE Solutions LLC Top agencies DOI (Department of the Interior)	$327,566	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
80	Georgia Department of Agriculture Top agencies HHS (Department of Health and Human Services)	$323,470	0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; up 81 since Jul 2024–Jun 2025.
81	Minuteman Security Solutions LLC Top agencies Army (Department of the Army)	$321,225	0.1%	Rank history: not on the FY2021–FY2022 lists, #60 in FY2023, #58 in FY2024 and #64 in FY2025; down 5 since Jul 2024–Jun 2025.
82	Fickett Structural Solutions Inc. Top agencies Army (Department of the Army)	$318,876	0.1%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and not on the FY2025 list; up 167 since Jul 2024–Jun 2025.
83	Control Solutions Northwest, Inc. Top agencies VA (Department of Veterans Affairs)	$309,498	0.1%	Rank history: not on the FY2021–FY2022 lists, #85 in FY2023 and not on the FY2024–FY2025 lists; up 52 since Jul 2024–Jun 2025.
84	Baron Analytical Laboratories LLC Top agencies VA (Department of Veterans Affairs)	$295,971	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
85	AFG Group Inc. Top agencies DOI (Department of the Interior)	$289,604	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
86	L Sakvarelidze National Center for Disease Control and Public Health Top agencies DHA (Defense Health Agency)	$280,000	0.1%	Rank history: #100 in FY2021, not on the FY2022–FY2024 lists and #89 in FY2025; up 16 since Jul 2024–Jun 2025.
87	Bryant Power Solutions L.l.c Top agencies VA (Department of Veterans Affairs)	$277,700	0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; new, not ranked in Jul 2024–Jun 2025.
88	Web Business Solutions Inc. Top agencies Navy (Department of the Navy)	$277,288	0.1%	Rank history: not on the FY2021–FY2024 lists and #91 in FY2025; new, not ranked in Jul 2024–Jun 2025.
89	American Society for Testing and Materials Top agencies DLA (Defense Logistics Agency)	$266,817	0.1%	Rank history: not on the FY2021–FY2025 lists; up 201 since Jul 2024–Jun 2025.
90	Department of Agriculture Tennessee Top agencies HHS (Department of Health and Human Services)	$264,524	0.1%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; up 14 since Jul 2024–Jun 2025.
91	Contract Decor, Inc. Top agencies VA (Department of Veterans Affairs)	$251,805	0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; new, not ranked in Jul 2024–Jun 2025.
92	Enviroh20 LLC Top agencies VA (Department of Veterans Affairs)	$250,162	0.1%	Rank history: not on the FY2021–FY2025 lists; up 24 since Jul 2024–Jun 2025.
93	Winergy LLC Top agencies VA (Department of Veterans Affairs)	$249,824	0.1%	Rank history: not on the FY2021–FY2022 lists, #76 in FY2023 and not on the FY2024–FY2025 lists; up 32 since Jul 2024–Jun 2025.
94	Texas A & M University System Through Texas A&M Agrilife Research Top agencies HHS (Department of Health and Human Services)	$245,349	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 21 since Jul 2024–Jun 2025.
95	Cubrc, Inc. Top agencies HHS (Department of Health and Human Services)	$241,735	0.1%	Rank history: not on the FY2021–FY2023 lists, #45 in FY2024 and not on the FY2025 list; down 50 since Jul 2024–Jun 2025.
96	VA State Board of Health Top agencies HHS (Department of Health and Human Services)	$240,561	0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; up 17 since Jul 2024–Jun 2025.
97	Health Services Kentucky Cabinet For Top agencies HHS (Department of Health and Human Services)	$239,161	0.1%	Rank history: not on the FY2021–FY2025 lists; up 11 since Jul 2024–Jun 2025.
98	Centrifugal Technologies, Inc. Top agencies Army (Department of the Army)	$235,324	0.1%	Rank history: not on the FY2021–FY2023 lists, #93 in FY2024 and #84 in FY2025; up 9 since Jul 2024–Jun 2025.
99	Hurtvet Subcontracting LLC Top agencies VA (Department of Veterans Affairs)	$234,224	0.1%	Rank history: not on the FY2021–FY2025 lists; up 48 since Jul 2024–Jun 2025.
100	Klenzoid Inc. Top agencies VA (Department of Veterans Affairs)	$232,875	0.1%	Rank history: not on the FY2021–FY2025 lists; up 62 since Jul 2024–Jun 2025.

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100 of 525 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC H1

Code	Net obligations	Largest contractor
H199 Quality Control Services: Miscellaneous	$18,361,767	Maryland Department of Health
H146 Quality Control Services: Water Purification and Sewage Treatment Equipment	$12,312,005	GA Mechanical Inc.
H141 Quality Control Services: Refrigeration, Air Conditioning, and Air Circulating Equipment	$4,228,504	United Paradyne Corporation
H166 Quality Control Services: Instruments and Laboratory Equipment	$3,088,459	Health Systems Sciences, LLC
H142 Quality Control Services: Fire Fighting, Rescue, and Safety Equipment; and Environmental Protection Equipment and Materials	$1,071,922	Lionheart Alliance LLC

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 $390 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.
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 Jul 2024–Jun 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 H1 contractors in Jul 2025–Jun 2026?

1. GDC Middle East Company ($170M), 2. Peckham Vocational Industries Inc. ($70.8M), 3. Sierra Nevada Company, LLC ($4.78M), 4. Intertek USA Inc. ($2.77M), 5. Maryland Department of Health ($2.31M), 6. Siemens Industry Inc. ($2.15M), 7. Phigenics LLC ($2.07M), 8. GA Mechanical Inc. ($2.01M), 9. United Paradyne Corporation ($1.75M), 10. New Jersey Department of Health ($1.73M).

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