Top 100 Contractors in NAICS 54138: Testing Laboratories and Services, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 54138: Testing Laboratories and 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 44% of NAICS 54138 contract dollars from July 2025 through June 2026

Contract obligations: $587,101,195 Net of deobligations, by contracts coded NAICS 54138 or a code under it
Contractors: 1,064 Parent companies with an obligation
Largest contractor: Agile Defense, LLC $53.7 million, 8.4% of obligations
Data as of: Oct 16, 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	Agile Defense, LLC Top agencies DISA (Defense Information Systems Agency)	$53,748,897	8.4%	Rank history: not on the FY2021–FY2023 lists, #2 in FY2024 and #2 in FY2025; up 2 since Jul 2024–Jun 2025.
2	Astrion Group, LLC Top agencies NASA (National Aeronautics and Space Administration)	$48,828,734	7.6%	Rank history: not on the FY2021 list, #44 in FY2022, #2 in FY2023, #3 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
3	RTX Corporation 2 awardees, including Raytheon Company Top agencies USAF (Department of the Air Force)	$43,318,944	6.7%	Rank history: #3 in FY2021, #3 in FY2022, #4 in FY2023, #6 in FY2024 and #6 in FY2025; up 3 since Jul 2024–Jun 2025.
4	Merrick & Company Top agencies USDA (Department of Agriculture)	$26,368,317	4.1%	Rank history: not on the FY2021–FY2023 lists, #40 in FY2024 and #3 in FY2025; up 40 since Jul 2024–Jun 2025.
5	Transportation Research Center Inc. Top agencies DOT (Department of Transportation)	$23,120,857	3.6%	Rank history: #4 in FY2021, #5 in FY2022, #3 in FY2023, #5 in FY2024 and #4 in FY2025; down 1 since Jul 2024–Jun 2025.
6	ManTech International Corporation Through Mantech Advanced Systems International, Inc. Top agencies USAF (Department of the Air Force)	$22,073,261	3.4%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; up 3 since Jul 2024–Jun 2025.
7	Ginkgo Bioworks Holdings Inc. Through Ginkgo Bioworks, Inc. Top agencies HHS (Department of Health and Human Services)	$20,999,984	3.3%	Rank history: not on the FY2021 list, #6 in FY2022, #5 in FY2023, #1 in FY2024 and not on the FY2025 list; down 6 since Jul 2024–Jun 2025.
8	The Bionetics Corporation Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$18,119,508	2.8%	Rank history: #2 in FY2021, #4 in FY2022, #6 in FY2023, #8 in FY2024 and #5 in FY2025; down 1 since Jul 2024–Jun 2025.
9	Infinity Biologix LLC Top agencies VA (Department of Veterans Affairs)	$15,102,070	2.3%	Rank history: #6 in FY2021, #10 in FY2022, not on the FY2023 list, #20 in FY2024 and #17 in FY2025; up 13 since Jul 2024–Jun 2025.
10	Tempus AI, Inc. Top agencies VA (Department of Veterans Affairs)	$11,090,783	1.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
11	Mccrone Associates Inc. Top agencies USAF (Department of the Air Force)	$11,036,317	1.7%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; up 2 since Jul 2024–Jun 2025.
12	Guidehouse Inc. 2 awardees, including Aptim Federal Services, LLC Top agencies Navy (Department of the Navy) EPA (Environmental Protection Agency) OSD (Office of the Secretary of Defense)	$8,717,122	1.4%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #10 in FY2025; down 2 since Jul 2024–Jun 2025.
13	University of California, Davis Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior) USAF (Department of the Air Force)	$8,170,065	1.3%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #13 in FY2025; down 2 since Jul 2024–Jun 2025.
14	Emory University Top agencies HHS (Department of Health and Human Services)	$7,665,183	1.2%	Rank history: not on the FY2021 list, #17 in FY2022, #1 in FY2023, #23 in FY2024 and #9 in FY2025; up 1 since Jul 2024–Jun 2025.
15	Bangham Engineering Inc. Top agencies DOT (Department of Transportation)	$7,650,395	1.2%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #26 in FY2025; up 10 since Jul 2024–Jun 2025.
16	Baylor College of Medicine Top agencies HHS (Department of Health and Human Services)	$7,627,016	1.2%	Rank history: #12 in FY2021, #13 in FY2022, #8 in FY2023, #9 in FY2024 and #16 in FY2025; down 8 since Jul 2024–Jun 2025.
17	Eastern Research Group Inc. Top agencies EPA (Environmental Protection Agency)	$7,544,787	1.2%	Rank history: #22 in FY2021, #41 in FY2022, #35 in FY2023, #29 in FY2024 and #30 in FY2025; up 82 since Jul 2024–Jun 2025.
18	OLH Technical Services, LLC Top agencies DOJ (Department of Justice)	$6,746,260	1.0%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #14 in FY2025; up 1 since Jul 2024–Jun 2025.
19	Teledyne Flir Unmanned Ground Systems Inc Through Teledyne Brown Engineering, Inc. Top agencies USAF (Department of the Air Force)	$5,396,812	0.8%	Rank history: #18 in FY2021, #32 in FY2022, #20 in FY2023, #25 in FY2024 and #18 in FY2025; up 1 since Jul 2024–Jun 2025.
20	Ardl Inc. Top agencies Army (Department of the Army)	$5,154,214	0.8%	Rank history: not on the FY2021 list, #92 in FY2022, #56 in FY2023, not on the FY2024 list and #66 in FY2025; up 56 since Jul 2024–Jun 2025.
21	ICF International Inc. 2 awardees, including ICF Incorporated, L.L.C. and ICF Environmental, Inc. Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior)	$5,113,609	0.8%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #28 in FY2025; unchanged since Jul 2024–Jun 2025.
22	Gryphon Technologies L.C. Top agencies USAF (Department of the Air Force)	$4,835,549	0.8%	Rank history: not on the FY2021–FY2023 lists, #31 in FY2024 and #27 in FY2025; up 9 since Jul 2024–Jun 2025.
23	The Broad Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$4,789,557	0.7%	Rank history: #5 in FY2021, #15 in FY2022, #41 in FY2023, #7 in FY2024 and #25 in FY2025; down 18 since Jul 2024–Jun 2025.
24	The Charles Stark Draper Laboratory, Inc. Top agencies USAF (Department of the Air Force)	$4,754,699	0.7%	Rank history: #19 in FY2021, #23 in FY2022, #26 in FY2023, #27 in FY2024 and #22 in FY2025; up 4 since Jul 2024–Jun 2025.
25	Fugro USA Land, Inc. Top agencies Army (Department of the Army)	$4,295,210	0.7%	Rank history: not on the FY2021–FY2024 lists and #49 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	Consolidated Safety Services Incorporated Top agencies EPA (Environmental Protection Agency)	$4,208,882	0.7%	Rank history: #33 in FY2021, #45 in FY2022, #38 in FY2023, #38 in FY2024 and #24 in FY2025; up 21 since Jul 2024–Jun 2025.
27	Sports Medicine Research and Testing Laboratory Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$4,055,770	0.6%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023, #34 in FY2024 and #31 in FY2025; up 6 since Jul 2024–Jun 2025.
28	Akesogen, Inc. Top agencies VA (Department of Veterans Affairs)	$4,000,000	0.6%	Rank history: #10 in FY2021, #8 in FY2022, #24 in FY2023, #37 in FY2024 and #32 in FY2025; up 8 since Jul 2024–Jun 2025.
29	Techlaw Consultants Inc. Top agencies EPA (Environmental Protection Agency)	$3,748,020	0.6%	Rank history: #69 in FY2021, not on the FY2022–FY2023 lists, #35 in FY2024 and #29 in FY2025; up 3 since Jul 2024–Jun 2025.
30	Johns Hopkins University 2 awardees, including The Johns Hopkins University Applied Physics Laboratory LLC Top agencies DHS (Department of Homeland Security) HHS (Department of Health and Human Services)	$3,740,560	0.6%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; up 285 since Jul 2024–Jun 2025.
31	The Boeing Company 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$3,628,156	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
32	The Medical University of South Carolina Top agencies VA (Department of Veterans Affairs)	$3,554,129	0.6%	Rank history: not on the FY2021–FY2024 lists and #48 in FY2025; up 60 since Jul 2024–Jun 2025.
33	Chemtex Environmental Laboratory, Inc. Top agencies EPA (Environmental Protection Agency)	$3,500,000	0.5%	Rank history: not on the FY2021 list, #47 in FY2022, not on the FY2023 list, #59 in FY2024 and #19 in FY2025; up 1 since Jul 2024–Jun 2025.
34	Bonner Analytical Testing Co Top agencies EPA (Environmental Protection Agency)	$3,500,000	0.5%	Rank history: not on the FY2021 list, #38 in FY2022, #57 in FY2023, #43 in FY2024 and #20 in FY2025; down 10 since Jul 2024–Jun 2025.
35	The Leland Stanford Junior University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$3,479,070	0.5%	Rank history: not on the FY2021–FY2023 lists, #67 in FY2024 and #36 in FY2025; up 30 since Jul 2024–Jun 2025.
36	Deutsches Zentrum FÜR Luft- UND Raumfahrt E.V. Top agencies NASA (National Aeronautics and Space Administration)	$3,402,332	0.5%	Rank history: #46 in FY2021, #26 in FY2022, not on the FY2023 list, #12 in FY2024 and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
37	Intertek USA Inc. Top agencies DLA (Defense Logistics Agency)	$2,774,757	0.4%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and #33 in FY2025; down 2 since Jul 2024–Jun 2025.
38	Alutiiq Essential Services LLC Top agencies NASA (National Aeronautics and Space Administration)	$2,726,121	0.4%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #21 in FY2025; down 8 since Jul 2024–Jun 2025.
39	Applus Idiada Karco Engineering, LLC Top agencies DOT (Department of Transportation)	$2,589,155	0.4%	Rank history: #90 in FY2021, not on the FY2022 list, #50 in FY2023, #56 in FY2024 and #50 in FY2025; up 18 since Jul 2024–Jun 2025.
40	Eustis Engineering, L.L.C. Top agencies Army (Department of the Army)	$2,527,228	0.4%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; new, not ranked in Jul 2024–Jun 2025.
41	Banner Health Top agencies HHS (Department of Health and Human Services)	$2,332,200	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
42	Solutions Through Innovative Technologies Inc. Top agencies USAF (Department of the Air Force)	$2,291,180	0.4%	Rank history: not on the FY2021 list, #55 in FY2022, #46 in FY2023, #33 in FY2024 and #46 in FY2025; down 5 since Jul 2024–Jun 2025.
43	Brick and Byte Inc. Top agencies DOT (Department of Transportation)	$2,270,000	0.4%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
44	MRIGLOBAL Top agencies DOD (Department of Defense)	$2,207,198	0.3%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023, #22 in FY2024 and #23 in FY2025; down 17 since Jul 2024–Jun 2025.
45	Serco Inc Top agencies EPA (Environmental Protection Agency)	$2,114,199	0.3%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023, #45 in FY2024 and #41 in FY2025; up 4 since Jul 2024–Jun 2025.
46	New York Genome Center, Inc. Top agencies HHS (Department of Health and Human Services)	$1,890,886	0.3%	Rank history: #20 in FY2021, not on the FY2022–FY2023 lists, #26 in FY2024 and #63 in FY2025; down 20 since Jul 2024–Jun 2025.
47	City of San Diego Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$1,888,871	0.3%	Rank history: not on the FY2021–FY2023 lists, #88 in FY2024 and #77 in FY2025; up 19 since Jul 2024–Jun 2025.
48	Soil and Land Use Technology, Inc. Top agencies DOT (Department of Transportation)	$1,870,107	0.3%	Rank history: not on the FY2021–FY2023 lists, #60 in FY2024 and #38 in FY2025; down 7 since Jul 2024–Jun 2025.
49	MGA Research Corporation 2 awardees Top agencies DOT (Department of Transportation)	$1,859,205	0.3%	Rank history: not on the FY2021–FY2025 lists; up 86 since Jul 2024–Jun 2025.
50	Chugai Technos Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army) DHA (Defense Health Agency)	$1,803,436	0.3%	Rank history: not on the FY2021–FY2024 lists and #69 in FY2025; up 40 since Jul 2024–Jun 2025.
51	Calspan, LLC Top agencies DOT (Department of Transportation)	$1,801,038	0.3%	Rank history: not on the FY2021–FY2023 lists, #90 in FY2024 and #72 in FY2025; up 55 since Jul 2024–Jun 2025.
52	Transnetyx Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,730,257	0.3%	Rank history: not on the FY2021–FY2023 lists, #79 in FY2024 and #78 in FY2025; up 19 since Jul 2024–Jun 2025.
53	Precision for Medicine, Inc. Top agencies HHS (Department of Health and Human Services)	$1,711,261	0.3%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #39 in FY2025; up 24 since Jul 2024–Jun 2025.
54	Applied Research In Acoustics LLC Top agencies Army (Department of the Army)	$1,701,192	0.3%	Rank history: not on the FY2021–FY2023 lists, #95 in FY2024 and #81 in FY2025; up 33 since Jul 2024–Jun 2025.
55	Aqua Survey, Inc. Top agencies Army (Department of the Army)	$1,684,725	0.3%	Rank history: #80 in FY2021, #58 in FY2022, #91 in FY2023, #61 in FY2024 and #57 in FY2025; unchanged since Jul 2024–Jun 2025.
56	Tech O. R., LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$1,684,178	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
57	Eagle Integrated Services, LLC Top agencies Navy (Department of the Navy)	$1,677,140	0.3%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023, #66 in FY2024 and #56 in FY2025; up 1 since Jul 2024–Jun 2025.
58	Bluepath Labs LLC Top agencies DHS (Department of Homeland Security)	$1,621,180	0.3%	Rank history: #58 in FY2021, #67 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
59	The Regents of the University of Colorado Top agencies Commerce (Department of Commerce)	$1,588,775	0.2%	Rank history: #84 in FY2021, #63 in FY2022, #64 in FY2023, not on the FY2024 list and #44 in FY2025; up 22 since Jul 2024–Jun 2025.
60	Tribologik Corp Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$1,554,628	0.2%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023, #73 in FY2024 and #60 in FY2025; up 4 since Jul 2024–Jun 2025.
61	Techfocus LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$1,547,229	0.2%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023, #93 in FY2024 and #54 in FY2025; up 42 since Jul 2024–Jun 2025.
62	Asrt, Inc. Top agencies HHS (Department of Health and Human Services)	$1,498,661	0.2%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; up 11 since Jul 2024–Jun 2025.
63	Vanderbilt University Medical Center Top agencies VA (Department of Veterans Affairs)	$1,351,690	0.2%	Rank history: not on the FY2021–FY2025 lists; up 62 since Jul 2024–Jun 2025.
64	Dynamic Research, Inc. Top agencies DOT (Department of Transportation)	$1,250,091	0.2%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #75 in FY2025; down 11 since Jul 2024–Jun 2025.
65	Jung Research and Development Corp Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$1,247,017	0.2%	Rank history: not on the FY2021 list, #54 in FY2022, #53 in FY2023, #49 in FY2024 and #61 in FY2025; up 2 since Jul 2024–Jun 2025.
66	Enomis Idril JV LLC Top agencies Army (Department of the Army)	$1,240,469	0.2%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 23 since Jul 2024–Jun 2025.
67	Kratos Sre, Inc. Top agencies Navy (Department of the Navy)	$1,236,740	0.2%	Rank history: not on the FY2021–FY2023 lists, #83 in FY2024 and #51 in FY2025; down 11 since Jul 2024–Jun 2025.
68	Hyperion Biotechnology, Inc. Top agencies VA (Department of Veterans Affairs)	$1,220,340	0.2%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; up 27 since Jul 2024–Jun 2025.
69	Battelle Memorial Institute Top agencies Army (Department of the Army)	$1,216,060	0.2%	Rank history: #73 in FY2021, #74 in FY2022, #96 in FY2023, #74 in FY2024 and #62 in FY2025; down 7 since Jul 2024–Jun 2025.
70	Doc Development, Inc. Top agencies USAF (Department of the Air Force)	$1,199,039	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023, #91 in FY2024 and #82 in FY2025; up 14 since Jul 2024–Jun 2025.
71	University of Washington Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,192,252	0.2%	Rank history: not on the FY2021–FY2023 lists, #28 in FY2024 and #59 in FY2025; down 48 since Jul 2024–Jun 2025.
72	PPI Technical Services LLC Top agencies USAF (Department of the Air Force)	$1,190,523	0.2%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2023, #87 in FY2024 and #76 in FY2025; up 10 since Jul 2024–Jun 2025.
73	Phigenics LLC Top agencies VA (Department of Veterans Affairs)	$1,185,618	0.2%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 42 since Jul 2024–Jun 2025.
74	Cherokee Nation System Solutions LLC Top agencies Commerce (Department of Commerce)	$1,174,068	0.2%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; up 54 since Jul 2024–Jun 2025.
75	Cape Fear Analytical, LLC Top agencies EPA (Environmental Protection Agency) Army (Department of the Army)	$1,172,291	0.2%	Rank history: not on the FY2021 list, #75 in FY2022, not on the FY2023–FY2024 lists and #42 in FY2025; down 5 since Jul 2024–Jun 2025.
76	Virginia Commonwealth University Health System Authority 2 awardees, including Virginia Polytechnic Institute & State University and VCU Health System Authority Top agencies DOT (Department of Transportation) VA (Department of Veterans Affairs)	$1,157,536	0.2%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2023, #16 in FY2024 and #58 in FY2025; down 58 since Jul 2024–Jun 2025.
77	Regents of the University of Michigan Top agencies DOT (Department of Transportation) VA (Department of Veterans Affairs)	$1,133,648	0.2%	Rank history: #96 in FY2021, #29 in FY2022, #34 in FY2023, #75 in FY2024 and #87 in FY2025; down 3 since Jul 2024–Jun 2025.
78	Amentum Holdings, Inc. Through Amentum Services, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,121,871	0.2%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 153 since Jul 2024–Jun 2025.
79	I-2-I Solutions, Inc. Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DHA (Defense Health Agency)	$1,101,550	0.2%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 19 since Jul 2024–Jun 2025.
80	Winergy LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army) DHA (Defense Health Agency)	$1,090,863	0.2%	Rank history: not on the FY2021 list, #98 in FY2022, not on the FY2023–FY2024 lists and #79 in FY2025; up 11 since Jul 2024–Jun 2025.
81	Marianas Geotech Services LLC Top agencies USAF (Department of the Air Force)	$1,088,120	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
82	Dayton T. Brown, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,066,883	0.2%	Rank history: #100 in FY2021, not on the FY2022–FY2024 lists and #73 in FY2025; up 35 since Jul 2024–Jun 2025.
83	Star Geoenvironmental LLC Top agencies Army (Department of the Army)	$1,054,384	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
84	Eurofins Lancaster Laboratories Environment Testing, LLC Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,001,050	0.2%	Rank history: not on the FY2021–FY2025 lists; up 45 since Jul 2024–Jun 2025.
85	Fortive Corporation 3 awardees, including Pacific Scientific Energetic Materials Company (California Llc) and Fluke Electronics Corp Top agencies Navy (Department of the Navy) EPA (Environmental Protection Agency)	$994,695	0.2%	Rank history: not on the FY2021–FY2025 lists; up 46 since Jul 2024–Jun 2025.
86	Fisher Bioservices Inc. Top agencies HHS (Department of Health and Human Services)	$973,081	0.2%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; down 25 since Jul 2024–Jun 2025.
87	Enrec Enterprises Inc. Top agencies VA (Department of Veterans Affairs)	$959,923	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
88	DNA Labs International Inc Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$944,625	0.1%	Rank history: not on the FY2021 list, #81 in FY2022, #70 in FY2023, #64 in FY2024 and #67 in FY2025; down 38 since Jul 2024–Jun 2025.
89	Clym Environmental Services LLC Top agencies HHS (Department of Health and Human Services)	$935,386	0.1%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and #93 in FY2025; up 67 since Jul 2024–Jun 2025.
90	Nevada System of Higher Education Top agencies DOI (Department of the Interior)	$908,990	0.1%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #92 in FY2025; down 50 since Jul 2024–Jun 2025.
91	Veritext LLC Through Pace Analytical Services, LLC Top agencies Army (Department of the Army) DOT (Department of Transportation) DOI (Department of the Interior)	$894,104	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
92	DCS Corporation Top agencies USAF (Department of the Air Force)	$889,918	0.1%	Rank history: not on the FY2021 list, #71 in FY2022, not on the FY2023 list, #96 in FY2024 and #96 in FY2025; up 4 since Jul 2024–Jun 2025.
93	The Ohio State University Top agencies HHS (Department of Health and Human Services)	$867,755	0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; new, not ranked in Jul 2024–Jun 2025.
94	SGS Canada Inc. Top agencies DOI (Department of the Interior)	$851,384	0.1%	Rank history: not on the FY2021–FY2023 lists, #80 in FY2024 and #43 in FY2025; down 48 since Jul 2024–Jun 2025.
95	SGS North America Inc. Top agencies DHA (Defense Health Agency) DOI (Department of the Interior) DOT (Department of Transportation)	$832,091	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
96	TCS Services LLC Top agencies VA (Department of Veterans Affairs)	$812,728	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	RLM Government Services LLC Top agencies VA (Department of Veterans Affairs)	$811,076	0.1%	Rank history: not on the FY2021–FY2025 lists; down 3 since Jul 2024–Jun 2025.
98	AECOM Technical Services, Inc. Top agencies Army (Department of the Army)	$799,853	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
99	Virtra, Inc. Top agencies DHS (Department of Homeland Security)	$798,661	0.1%	Rank history: #60 in FY2021, #14 in FY2022 and not on the FY2023–FY2025 lists; down 19 since Jul 2024–Jun 2025.
100	Advanced Environmental Laboratories, Inc. Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$772,984	0.1%	Rank history: not on the FY2021–FY2025 lists; up 39 since Jul 2024–Jun 2025.

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100 of 1,064 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 54138

Code	Net obligations	Largest contractor
541380 Testing Laboratories and Services	$587,101,195	Agile Defense, 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 $643 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 NAICS 54138 contractors in Jul 2025–Jun 2026?

1. Agile Defense, LLC ($53.7M), 2. Astrion Group, LLC ($48.8M), 3. RTX Corporation ($43.3M), 4. Merrick & Company ($26.4M), 5. Transportation Research Center Inc. ($23.1M), 6. ManTech International Corporation ($22.1M), 7. Ginkgo Bioworks Holdings Inc. ($21M), 8. The Bionetics Corporation ($18.1M), 9. Infinity Biologix LLC ($15.1M), 10. Tempus AI, Inc. ($11.1M).

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