Top 100 Contractors in PSC H999: Other Quality Control, Testing and Inspection Services: Miscellaneous, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC H999: Other Quality Control, Testing and Inspection Services: Miscellaneous, 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 81% of PSC H999 contract dollars from July 2025 through June 2026

Contract obligations: $85,476,012 Net of deobligations, by contracts coded PSC H999
Contractors: 182 Parent companies with an obligation
Largest contractor: Applied Research Associates, Inc. $27.6 million, 30.8% 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	Applied Research Associates, Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$27,601,094	30.8%	Rank history: #16 in FY2021, not on the FY2022 list, #4 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Parsons Corporation Through Parsons Government Services Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$22,392,124	25.0%	Rank history: not on the FY2021–FY2022 lists, #2 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since Jul 2024–Jun 2025.
3	Navcor Logistics LLC Top agencies USDA (Department of Agriculture)	$6,000,000	6.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
4	Korea Housing Management Co.,Ltd Top agencies Army (Department of the Army)	$4,783,277	5.3%	Rank history: not on the FY2021–FY2023 lists, #10 in FY2024 and #3 in FY2025; up 2 since Jul 2024–Jun 2025.
5	Murtech, Inc. Top agencies Army (Department of the Army)	$3,025,978	3.4%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; new, not ranked in Jul 2024–Jun 2025.
6	State of Wisconsin Department of Health Services Top agencies HHS (Department of Health and Human Services)	$2,098,530	2.3%	Rank history: not on the FY2021–FY2024 lists and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
7	Obsidian Solutions Group LLC Top agencies DTRA (Defense Threat Reduction Agency)	$2,094,413	2.3%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023, #15 in FY2024 and #11 in FY2025; down 2 since Jul 2024–Jun 2025.
8	Johnson Controls Government Systems, LLC Top agencies Army (Department of the Army)	$1,894,737	2.1%	Rank history: not on the FY2021 list, #9 in FY2022, not on the FY2023–FY2024 lists and #8 in FY2025; up 2 since Jul 2024–Jun 2025.
9	Data Quality Science, LLC Top agencies HHS (Department of Health and Human Services)	$1,335,135	1.5%	Rank history: not on the FY2021 list, #12 in FY2022, #13 in FY2023, #13 in FY2024 and #9 in FY2025; up 3 since Jul 2024–Jun 2025.
10	Rmgs Inc. Top agencies DTRA (Defense Threat Reduction Agency)	$1,174,820	1.3%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023, #19 in FY2024 and #14 in FY2025; new, not ranked in Jul 2024–Jun 2025.
11	Accura Engineering and Consulting Services, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,005,735	1.1%	Rank history: #9 in FY2021, #16 in FY2022, #15 in FY2023, #18 in FY2024 and #13 in FY2025; up 2 since Jul 2024–Jun 2025.
12	National Facility Solutions LLC Through Enviros LLC Top agencies VA (Department of Veterans Affairs)	$963,014	1.1%	Rank history: not on the FY2021 list, #32 in FY2022, #37 in FY2023, #17 in FY2024 and #17 in FY2025; up 3 since Jul 2024–Jun 2025.
13	Chugai Technos Corporation Top agencies Navy (Department of the Navy)	$802,072	0.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
14	Camfil USA Inc. Top agencies USDA (Department of Agriculture)	$432,000	0.5%	Rank history: not on the FY2021–FY2023 lists, #22 in FY2024 and #34 in FY2025; new, not ranked in Jul 2024–Jun 2025.
15	Campbell Scientific Inc. Top agencies USDA (Department of Agriculture)	$409,431	0.5%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; new, not ranked in Jul 2024–Jun 2025.
16	Hurtvet Subcontracting LLC Top agencies VA (Department of Veterans Affairs)	$400,917	0.4%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; up 8 since Jul 2024–Jun 2025.
17	Mclellan Integrated Professional Services LLC Top agencies VA (Department of Veterans Affairs)	$400,681	0.4%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #25 in FY2025; up 9 since Jul 2024–Jun 2025.
18	Credere Associates, LLC Top agencies Navy (Department of the Navy)	$398,640	0.4%	Rank history: #36 in FY2021, not on the FY2022–FY2023 lists, #16 in FY2024 and #23 in FY2025; up 24 since Jul 2024–Jun 2025.
19	Bagley Enterprises, Inc. Top agencies VA (Department of Veterans Affairs)	$377,897	0.4%	Rank history: #39 in FY2021, #36 in FY2022, #51 in FY2023, #69 in FY2024 and #28 in FY2025; up 28 since Jul 2024–Jun 2025.
20	The University of Toledo Top agencies NASA (National Aeronautics and Space Administration)	$349,814	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
21	AMA Consulting LLC Top agencies ED (Department of Education)	$326,263	0.4%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #20 in FY2025; down 3 since Jul 2024–Jun 2025.
22	Itms - GES JV LLC Top agencies Army (Department of the Army)	$315,312	0.4%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and #27 in FY2025; down 3 since Jul 2024–Jun 2025.
23	Nuaxis LLC Top agencies DOL (Department of Labor)	$294,235	0.3%	Rank history: #44 in FY2021, #35 in FY2022, #46 in FY2023, #30 in FY2024 and #21 in FY2025; down 1 since Jul 2024–Jun 2025.
24	Pauley Rodine Inc. Top agencies Navy (Department of the Navy)	$277,200	0.3%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023, #52 in FY2024 and #91 in FY2025; up 19 since Jul 2024–Jun 2025.
25	Venergy Group LLC Top agencies VA (Department of Veterans Affairs)	$261,092	0.3%	Rank history: #31 in FY2021, #28 in FY2022, #41 in FY2023, #42 in FY2024 and #31 in FY2025; up 3 since Jul 2024–Jun 2025.
26	Tri Airtesting Inc. Top agencies Navy (Department of the Navy)	$245,998	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
27	Board of Regents of the University of Nebraska Top agencies VA (Department of Veterans Affairs)	$241,635	0.3%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; new, not ranked in Jul 2024–Jun 2025.
28	Muchnick Hannah Top agencies Smithsonian (Smithsonian Institution)	$218,880	0.2%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023, not on the FY2024 list and #55 in FY2025; up 30 since Jul 2024–Jun 2025.
29	Environmental Compliance Consultants, Inc. Top agencies VA (Department of Veterans Affairs)	$205,425	0.2%	Rank history: not on the FY2021 list, #44 in FY2022, #49 in FY2023, #40 in FY2024 and #37 in FY2025; up 5 since Jul 2024–Jun 2025.
30	The University of Iowa Top agencies VA (Department of Veterans Affairs)	$202,716	0.2%	Rank history: #40 in FY2021, #43 in FY2022, #52 in FY2023, #46 in FY2024 and #38 in FY2025; up 7 since Jul 2024–Jun 2025.
31	A-Bear Consult LLC Top agencies VA (Department of Veterans Affairs)	$191,142	0.2%	Rank history: #77 in FY2021, #97 in FY2022, not on the FY2023 list, #83 in FY2024 and #39 in FY2025; up 8 since Jul 2024–Jun 2025.
32	Brink'S Holdings Ltd Through Brink's, Incorporated Top agencies DOS (Department of State)	$182,215	0.2%	Rank history: not on the FY2021–FY2023 lists, #35 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
33	Phigenics LLC Top agencies VA (Department of Veterans Affairs)	$179,316	0.2%	Rank history: not on the FY2021–FY2024 lists and #41 in FY2025; up 13 since Jul 2024–Jun 2025.
34	The W.w. Williams Co. Llc Top agencies DOJ (Department of Justice)	$174,345	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35	ASR International Corp. Top agencies DOI (Department of the Interior)	$167,716	0.2%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and #76 in FY2025; down 15 since Jul 2024–Jun 2025.
36	STG International, Inc. Top agencies Smithsonian (Smithsonian Institution)	$166,722	0.2%	Rank history: not on the FY2021 list, #63 in FY2022, #36 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
37	J&B Hartigan, Inc. Top agencies VA (Department of Veterans Affairs)	$162,519	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	Tetra Tech, Inc. Top agencies USDA (Department of Agriculture)	$160,783	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
39	MGA Research Corporation Top agencies DOT (Department of Transportation)	$154,860	0.2%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #44 in FY2025; down 1 since Jul 2024–Jun 2025.
40	Dynamic Non-Destructive Testing Inc. Top agencies Army (Department of the Army)	$151,625	0.2%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; new, not ranked in Jul 2024–Jun 2025.
41	Radiation Physics Consultants, Inc. Top agencies VA (Department of Veterans Affairs)	$150,354	0.2%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; up 14 since Jul 2024–Jun 2025.
42	Smiths Detection Inc. Top agencies DOI (Department of the Interior)	$138,853	0.2%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #50 in FY2025; up 12 since Jul 2024–Jun 2025.
43	Jaytech, Inc. Top agencies USAF (Department of the Air Force)	$137,330	0.2%	Rank history: #43 in FY2021, #39 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
44	Calspan, LLC Top agencies DOT (Department of Transportation)	$134,175	0.1%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #43 in FY2025; down 13 since Jul 2024–Jun 2025.
45	Heritage Services LLC Top agencies USAF (Department of the Air Force)	$126,371	0.1%	Rank history: not on the FY2021–FY2022 lists, #38 in FY2023, #26 in FY2024 and #40 in FY2025; down 12 since Jul 2024–Jun 2025.
46	Harrell Contracting Inc. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$121,102	0.1%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; up 5 since Jul 2024–Jun 2025.
47	M.s. Hatch Consulting, LLC Top agencies Army (Department of the Army)	$115,711	0.1%	Rank history: not on the FY2021–FY2023 lists, #81 in FY2024 and #84 in FY2025; up 35 since Jul 2024–Jun 2025.
48	Electronic Metrology Laboratory, LLC Top agencies DOI (Department of the Interior)	$108,655	0.1%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; new, not ranked in Jul 2024–Jun 2025.
49	Dunlap Government Solutions, LLC Top agencies VA (Department of Veterans Affairs)	$100,964	0.1%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; new, not ranked in Jul 2024–Jun 2025.
50	MAK Technologies Inc. Through NTS Technical Systems LLC Top agencies Army (Department of the Army)	$97,874	0.1%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #45 in FY2025; up 6 since Jul 2024–Jun 2025.
51	Predictive Technologies Inc. Top agencies Army (Department of the Army)	$88,360	0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; new, not ranked in Jul 2024–Jun 2025.
52	Remsa Inc. Top agencies Army (Department of the Army)	$85,012	0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023, #70 in FY2024 and #53 in FY2025; down 3 since Jul 2024–Jun 2025.
53	Aviate Enterprises, Inc. Top agencies VA (Department of Veterans Affairs)	$82,987	0.1%	Rank history: not on the FY2021–FY2025 lists; up 51 since Jul 2024–Jun 2025.
54	Psomagen Inc. Top agencies HHS (Department of Health and Human Services)	$81,175	0.1%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; new, not ranked in Jul 2024–Jun 2025.
55	HGS Engineering Inc. Top agencies Navy (Department of the Navy)	$80,377	0.1%	Rank history: #73 in FY2021, #65 in FY2022, #79 in FY2023, #65 in FY2024 and #30 in FY2025; down 26 since Jul 2024–Jun 2025.
56	I-2-I Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$77,186	0.1%	Rank history: not on the FY2021–FY2023 lists, #76 in FY2024 and #47 in FY2025; down 4 since Jul 2024–Jun 2025.
57	Emsl Analytical Inc. Top agencies DLA (Defense Logistics Agency)	$74,444	0.1%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and #74 in FY2025; up 18 since Jul 2024–Jun 2025.
58	Lira Electric LLC Top agencies Army (Department of the Army)	$73,324	0.1%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023, #58 in FY2024 and #64 in FY2025; up 8 since Jul 2024–Jun 2025.
59	Landauer, Inc. Top agencies VA (Department of Veterans Affairs)	$69,139	0.1%	Rank history: not on the FY2021–FY2024 lists and #80 in FY2025; up 27 since Jul 2024–Jun 2025.
60	Southco Services LLC Top agencies VA (Department of Veterans Affairs)	$68,400	0.1%	Rank history: not on the FY2021–FY2023 lists, #80 in FY2024 and not on the FY2025 list; up 106 since Jul 2024–Jun 2025.
61	Final Limit Elevator Inspections LLC Top agencies VA (Department of Veterans Affairs)	$66,641	0.1%	Rank history: not on the FY2021–FY2023 lists, #99 in FY2024 and #94 in FY2025; up 85 since Jul 2024–Jun 2025.
62	Bio-Tech Lab Services LLC Top agencies USDA (Department of Agriculture)	$65,486	0.1%	Rank history: not on the FY2021 list, #90 in FY2022, not on the FY2023 list, #87 in FY2024 and #81 in FY2025; up 23 since Jul 2024–Jun 2025.
63	Aerospace Facilities Group, Inc. Top agencies USAF (Department of the Air Force)	$62,862	0.1%	Rank history: not on the FY2021 list, #76 in FY2022, #89 in FY2023, #84 in FY2024 and #69 in FY2025; up 26 since Jul 2024–Jun 2025.
64	Tekton CC, LLC Top agencies VA (Department of Veterans Affairs)	$62,773	0.1%	Rank history: not on the FY2021–FY2023 lists, #82 in FY2024 and #56 in FY2025; up 17 since Jul 2024–Jun 2025.
65	Health Systems Sciences, LLC Top agencies VA (Department of Veterans Affairs)	$60,788	0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, not on the FY2024 list and #77 in FY2025; up 12 since Jul 2024–Jun 2025.
66	D & D Laboratory LLC Top agencies VA (Department of Veterans Affairs)	$60,185	0.1%	Rank history: not on the FY2021 list, #83 in FY2022, not on the FY2023–FY2024 lists and #48 in FY2025; up 13 since Jul 2024–Jun 2025.
67	Performance Review Institute Top agencies USAF (Department of the Air Force)	$57,020	0.1%	Rank history: not on the FY2021–FY2023 lists, #97 in FY2024 and not on the FY2025 list; up 54 since Jul 2024–Jun 2025.
68	Aml-American Made Logistics Top agencies VA (Department of Veterans Affairs)	$57,000	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
69	G2 Laboratories, LLC Top agencies VA (Department of Veterans Affairs)	$56,390	0.1%	Rank history: not on the FY2021–FY2023 lists, #95 in FY2024 and not on the FY2025 list; up 23 since Jul 2024–Jun 2025.
70	Advanced Diving Services Inc. Top agencies DOI (Department of the Interior)	$53,556	0.1%	Rank history: not on the FY2021–FY2024 lists and #87 in FY2025; new, not ranked in Jul 2024–Jun 2025.
71	Truck Refrigeration Repair, Inc. Top agencies Navy (Department of the Navy)	$53,450	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; new, not ranked in Jul 2024–Jun 2025.
72	American Industrial Hygiene Association Top agencies Navy (Department of the Navy)	$53,250	0.1%	Rank history: #75 in FY2021, not on the FY2022–FY2023 lists, #72 in FY2024 and #65 in FY2025; down 8 since Jul 2024–Jun 2025.
73	Mass Tank Inspection Services LLC Top agencies Army (Department of the Army)	$52,351	0.1%	Rank history: #85 in FY2021, #92 in FY2022, #86 in FY2023, #100 in FY2024 and #85 in FY2025; up 10 since Jul 2024–Jun 2025.
74	CAI Safety Systems Inc Top agencies USAF (Department of the Air Force)	$49,172	0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; up 14 since Jul 2024–Jun 2025.
75	Geo-Tec Environmental, LLC Top agencies DLA (Defense Logistics Agency)	$48,300	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 20 since Jul 2024–Jun 2025.
76	Techknowserv Corp Top agencies Army (Department of the Army)	$48,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; new, not ranked in Jul 2024–Jun 2025.
77	Letcher's Eci, LLC Top agencies VA (Department of Veterans Affairs)	$44,080	<0.1%	Rank history: not on the FY2021–FY2023 lists, #91 in FY2024 and #95 in FY2025; up 16 since Jul 2024–Jun 2025.
78	Korea Inspection System Corporation Top agencies Army (Department of the Army)	$43,833	<0.1%	Rank history: #33 in FY2021, #46 in FY2022, #55 in FY2023, #41 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
79	Professional Environmental Testing and Consulting, LLC Top agencies DOI (Department of the Interior)	$43,074	<0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; new, not ranked in Jul 2024–Jun 2025.
80	Nondestructive Inspection Service Inc. Top agencies Army (Department of the Army)	$41,884	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 103 since Jul 2024–Jun 2025.
81	RJY Group LLC Top agencies VA (Department of Veterans Affairs)	$41,452	<0.1%	Rank history: #53 in FY2021, #94 in FY2022, not on the FY2023–FY2024 lists and #89 in FY2025; up 9 since Jul 2024–Jun 2025.
82	Alaska Stairlift & Elevator LLC Top agencies USDA (Department of Agriculture)	$41,264	<0.1%	Rank history: #27 in FY2021, not on the FY2022 list, #92 in FY2023 and not on the FY2024–FY2025 lists; up 24 since Jul 2024–Jun 2025.
83	Merit Laboratories Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$38,498	<0.1%	Rank history: #83 in FY2021, not on the FY2022–FY2023 lists, #98 in FY2024 and not on the FY2025 list; up 25 since Jul 2024–Jun 2025.
84	IAW Construction, Inc. Top agencies VA (Department of Veterans Affairs)	$35,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
85	Johnson Controls Inc Top agencies HHS (Department of Health and Human Services)	$33,948	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
86	Paula F Price Enterprises LLC Top agencies VA (Department of Veterans Affairs)	$32,701	<0.1%	Rank history: #76 in FY2021 and not on the FY2022–FY2025 lists; up 15 since Jul 2024–Jun 2025.
87	Arizona State Boiler Inspectors, LLC Top agencies Army (Department of the Army)	$32,281	<0.1%	Rank history: #64 in FY2021 and not on the FY2022–FY2025 lists; up 72 since Jul 2024–Jun 2025.
88	Brownfields Development LLC Top agencies USDA (Department of Agriculture)	$32,150	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 24 since Jul 2024–Jun 2025.
89	Regents of the University of Michigan Top agencies DOT (Department of Transportation)	$31,677	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 40 since Jul 2024–Jun 2025.
90	Next Generation Logistics, LLC Top agencies Army (Department of the Army)	$31,225	<0.1%	Rank history: not on the FY2021–FY2022 lists, #19 in FY2023, #7 in FY2024 and #12 in FY2025; down 86 since Jul 2024–Jun 2025.
91	Winergy LLC Top agencies VA (Department of Veterans Affairs)	$31,090	<0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023, #89 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
92	Iris Environmental Laboratories LLC Top agencies DOI (Department of the Interior)	$29,630	<0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; up 43 since Jul 2024–Jun 2025.
93	Government and Military Certification Systems, Inc. Top agencies Army (Department of the Army)	$28,575	<0.1%	Rank history: #89 in FY2021, not on the FY2022–FY2024 lists and #75 in FY2025; down 17 since Jul 2024–Jun 2025.
94	Stroud Systems Inc Top agencies Army (Department of the Army)	$28,025	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
95	Steven Pickman Objects Conservation LLC Top agencies Smithsonian (Smithsonian Institution)	$28,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
96	International Automated Systems Inc. Top agencies USAF (Department of the Air Force)	$27,930	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 20 since Jul 2024–Jun 2025.
97	Environmental Science LLC Top agencies Navy (Department of the Navy)	$27,570	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
98	Technical Safety Services, LLC Top agencies VA (Department of Veterans Affairs)	$26,450	<0.1%	Rank history: not on the FY2021 list, #98 in FY2022, not on the FY2023 list, #51 in FY2024 and #51 in FY2025; down 25 since Jul 2024–Jun 2025.
99	Trinity Air Ambulance International, L.L.C. Top agencies DHA (Defense Health Agency)	$26,150	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
100	The Converse Professional Group Top agencies VA (Department of Veterans Affairs)	$25,800	<0.1%	Rank history: not on the FY2021 list, #84 in FY2022 and not on the FY2023–FY2025 lists; down 3 since Jul 2024–Jun 2025.

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100 of 182 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 $89.6 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 H999 contractors in Jul 2025–Jun 2026?

1. Applied Research Associates, Inc. ($27.6M), 2. Parsons Corporation ($22.4M), 3. Navcor Logistics LLC ($6M), 4. Korea Housing Management Co.,Ltd ($4.78M), 5. Murtech, Inc. ($3.03M), 6. State of Wisconsin Department of Health Services ($2.1M), 7. Obsidian Solutions Group LLC ($2.09M), 8. Johnson Controls Government Systems, LLC ($1.89M), 9. Data Quality Science, LLC ($1.34M), 10. Rmgs Inc. ($1.17M).

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