Top 100 Contractors in NAICS 541380: Testing Laboratories and Services, FY2025

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Astrion Group, LLC Top agencies NASA (National Aeronautics and Space Administration)	$61,002,786	9.0%	Rank history: not on the FY2021 list, #44 in FY2022, #2 in FY2023 and #3 in FY2024; up 2 since FY2024.
2	Agile Defense, LLC Top agencies DISA (Defense Information Systems Agency)	$46,874,620	6.9%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2024; unchanged since FY2024.
3	Merrick & Company Top agencies USDA (Department of Agriculture)	$22,828,343	3.4%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2024; up 37 since FY2024.
4	Transportation Research Center Inc. Top agencies DOT (Department of Transportation)	$21,969,849	3.3%	Rank history: #4 in FY2021, #5 in FY2022, #3 in FY2023 and #5 in FY2024; up 1 since FY2024.
5	The Bionetics Corporation Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$21,777,500	3.2%	Rank history: #2 in FY2021, #4 in FY2022, #6 in FY2023 and #8 in FY2024; up 3 since FY2024.
6	RTX Corporation 3 awardees, including Raytheon Company Top agencies USAF (Department of the Air Force)	$20,543,305	3.0%	Rank history: #3 in FY2021, #3 in FY2022, #4 in FY2023 and #6 in FY2024; unchanged since FY2024.
7	Lovelace Biomedical Research Institute Top agencies HHS (Department of Health and Human Services)	$16,821,304	2.5%	Rank history: not on the FY2021–FY2024 lists; new.
8	ManTech International Corporation Through Mantech Advanced Systems International, Inc. Top agencies USAF (Department of the Air Force)	$14,746,339	2.2%	Rank history: not on the FY2021–FY2024 lists; new.
9	Emory University Top agencies HHS (Department of Health and Human Services)	$12,495,121	1.9%	Rank history: not on the FY2021 list, #17 in FY2022, #1 in FY2023 and #23 in FY2024; up 14 since FY2024.
10	Guidehouse Inc. Through Aptim Federal Services, LLC Top agencies Navy (Department of the Navy) EPA (Environmental Protection Agency) OSD (Office of the Secretary of Defense)	$11,949,964	1.8%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2024; up 14 since FY2024.
11	Mccrone Associates Inc. Top agencies USAF (Department of the Air Force)	$9,969,699	1.5%	Rank history: not on the FY2021–FY2024 lists; new.
12	Linde Special Projects LLC Top agencies USAF (Department of the Air Force)	$8,494,210	1.3%	Rank history: not on the FY2021–FY2022 lists, #19 in FY2023 and not on the FY2024 list; returned.
13	Baylor College of Medicine 2 awardees, including Baylor Miraca Genetics Laboratories LLC Top agencies HHS (Department of Health and Human Services)	$8,414,373	1.2%	Rank history: #12 in FY2021, #13 in FY2022, #8 in FY2023 and #9 in FY2024; down 4 since FY2024.
14	University of California, Davis Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior) USAF (Department of the Air Force)	$8,258,329	1.2%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 36 since FY2024.
15	OLH Technical Services, LLC Top agencies DOJ (Department of Justice)	$8,247,213	1.2%	Rank history: not on the FY2021–FY2023 lists and #17 in FY2024; up 2 since FY2024.
16	Azenta US Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$7,773,177	1.2%	Rank history: not on the FY2021–FY2024 lists; up 329 since FY2024.
17	Infinity Biologix LLC Top agencies VA (Department of Veterans Affairs)	$6,111,557	0.9%	Rank history: #6 in FY2021, #10 in FY2022, not on the FY2023 list and #20 in FY2024; up 3 since FY2024.
18	Teledyne Flir Unmanned Ground Systems Inc 2 awardees, including Teledyne Brown Engineering, Inc. and Teledyne Flir Defense, LLC Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$5,660,127	0.8%	Rank history: #18 in FY2021, #32 in FY2022, #20 in FY2023 and #25 in FY2024; up 7 since FY2024.
19	Chemtex Environmental Laboratory, Inc. Top agencies EPA (Environmental Protection Agency)	$5,581,437	0.8%	Rank history: not on the FY2021 list, #47 in FY2022, not on the FY2023 list and #59 in FY2024; up 40 since FY2024.
20	Bonner Analytical Testing Co Top agencies EPA (Environmental Protection Agency)	$5,505,500	0.8%	Rank history: not on the FY2021 list, #38 in FY2022, #57 in FY2023 and #43 in FY2024; up 23 since FY2024.
21	Afognak Native Corporation Through Alutiiq Essential Services LLC Top agencies NASA (National Aeronautics and Space Administration)	$5,345,261	0.8%	Rank history: #21 in FY2021, #27 in FY2022, #25 in FY2023 and #51 in FY2024; up 30 since FY2024.
22	The Charles Stark Draper Laboratory, Inc. Top agencies USAF (Department of the Air Force)	$5,313,520	0.8%	Rank history: #19 in FY2021, #23 in FY2022, #26 in FY2023 and #27 in FY2024; up 5 since FY2024.
23	MRIGLOBAL Top agencies DOD (Department of Defense)	$5,268,831	0.8%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and #22 in FY2024; down 1 since FY2024.
24	Consolidated Safety Services Incorporated Top agencies EPA (Environmental Protection Agency)	$5,046,137	0.7%	Rank history: #33 in FY2021, #45 in FY2022, #38 in FY2023 and #38 in FY2024; up 14 since FY2024.
25	The Broad Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$4,790,857	0.7%	Rank history: #5 in FY2021, #15 in FY2022, #41 in FY2023 and #7 in FY2024; down 18 since FY2024.
26	Bangham Engineering Inc. Top agencies DOT (Department of Transportation)	$4,785,099	0.7%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2024; up 4 since FY2024.
27	Gryphon Technologies L.C. Top agencies USAF (Department of the Air Force)	$4,650,862	0.7%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2024; up 4 since FY2024.
28	ICF International Inc. Through ICF Incorporated, L.L.C. Top agencies EPA (Environmental Protection Agency)	$4,463,001	0.7%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; down 9 since FY2024.
29	Techlaw Consultants Inc. Top agencies EPA (Environmental Protection Agency)	$4,187,201	0.6%	Rank history: #69 in FY2021, not on the FY2022–FY2023 lists and #35 in FY2024; up 6 since FY2024.
30	Eastern Research Group Inc. Top agencies EPA (Environmental Protection Agency)	$4,178,222	0.6%	Rank history: #22 in FY2021, #41 in FY2022, #35 in FY2023 and #29 in FY2024; down 1 since FY2024.
31	Sports Medicine Research and Testing Laboratory Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$4,093,670	0.6%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and #34 in FY2024; up 3 since FY2024.
32	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 and #37 in FY2024; up 5 since FY2024.
33	Intertek USA Inc. Top agencies DLA (Defense Logistics Agency)	$3,913,476	0.6%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2024; up 36 since FY2024.
34	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)	$3,824,549	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
35	Nicholson Construction Company Top agencies Army (Department of the Army)	$3,795,945	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
36	The Leland Stanford Junior University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$3,258,348	0.5%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2024; up 31 since FY2024.
37	General Electric Company 2 awardees, including GE Energy Power Conversion Naval Systems Inc. and GE Aviation Systems LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$3,183,967	0.5%	Rank history: #17 in FY2021, #11 in FY2022, #30 in FY2023 and #47 in FY2024; up 10 since FY2024.
38	Soil and Land Use Technology, Inc. Top agencies DOT (Department of Transportation)	$3,180,107	0.5%	Rank history: not on the FY2021–FY2023 lists and #60 in FY2024; up 22 since FY2024.
39	Precision for Medicine, Inc. Top agencies HHS (Department of Health and Human Services)	$3,081,394	0.5%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2024; up 18 since FY2024.
40	Verily Life Sciences LLC Top agencies HHS (Department of Health and Human Services)	$2,994,243	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
41	Serco Inc Top agencies EPA (Environmental Protection Agency)	$2,711,519	0.4%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and #45 in FY2024; up 4 since FY2024.
42	Cape Fear Analytical, LLC Top agencies EPA (Environmental Protection Agency)	$2,696,266	0.4%	Rank history: not on the FY2021 list, #75 in FY2022 and not on the FY2023–FY2024 lists; returned.
43	SGS Canada Inc. Top agencies DOI (Department of the Interior)	$2,395,491	0.4%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2024; up 37 since FY2024.
44	The Regents of the University of Colorado 2 awardees Top agencies Commerce (Department of Commerce) VA (Department of Veterans Affairs)	$2,346,985	0.3%	Rank history: #84 in FY2021, #63 in FY2022, #64 in FY2023 and not on the FY2024 list; up 97 since FY2024.
45	Brick and Byte Inc. Top agencies DOT (Department of Transportation)	$2,270,000	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
46	Solutions Through Innovative Technologies Inc. Top agencies USAF (Department of the Air Force)	$2,216,558	0.3%	Rank history: not on the FY2021 list, #55 in FY2022, #46 in FY2023 and #33 in FY2024; down 13 since FY2024.
47	Eustis Engineering, L.L.C. Top agencies Army (Department of the Army)	$2,011,501	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
48	State of South Carolina Through The Medical University of South Carolina Top agencies VA (Department of Veterans Affairs)	$1,996,255	0.3%	Rank history: #29 in FY2021, #37 in FY2022, #33 in FY2023 and #36 in FY2024; down 12 since FY2024.
49	University of Washington 2 awardees, including University of Washington School of Medicine Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,995,197	0.3%	Rank history: #32 in FY2021, #21 in FY2022, #40 in FY2023 and not on the FY2024 list; up 66 since FY2024.
50	Fugro USA Land, Inc. Top agencies Army (Department of the Army)	$1,895,901	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
51	Applus Idiada Karco Engineering, LLC Top agencies DOT (Department of Transportation)	$1,889,582	0.3%	Rank history: #90 in FY2021, not on the FY2022 list, #50 in FY2023 and #56 in FY2024; up 5 since FY2024.
52	Kratos Systems and Solutions, Inc. Through Kratos Sre, Inc. Top agencies Navy (Department of the Navy) NASA (National Aeronautics and Space Administration)	$1,871,085	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
53	Altus, LLC Top agencies Army (Department of the Army)	$1,867,186	0.3%	Rank history: not on the FY2021 list, #24 in FY2022, #18 in FY2023 and #15 in FY2024; down 38 since FY2024.
54	Cherokee Nation Through Cherokee Nation System Solutions LLC Top agencies Commerce (Department of Commerce)	$1,806,144	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
55	Techfocus LLC Top agencies DHS (Department of Homeland Security) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$1,776,188	0.3%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and #93 in FY2024; up 38 since FY2024.
56	Bristol Bay Native Corporation Through Eagle Integrated Services, LLC Top agencies Navy (Department of the Navy)	$1,677,140	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
57	Thermo Electron Corporation 3 awardees, including Fisher Bioservices Inc. and Olink Proteomics Inc. Top agencies HHS (Department of Health and Human Services)	$1,676,698	0.2%	Rank history: #62 in FY2021, not on the FY2022 list, #71 in FY2023 and not on the FY2024 list; up 79 since FY2024.
58	Aqua Survey, Inc. Top agencies Army (Department of the Army)	$1,657,420	0.2%	Rank history: #80 in FY2021, #58 in FY2022, #91 in FY2023 and #61 in FY2024; up 3 since FY2024.
59	Virginia Commonwealth University Health System Authority 2 awardees, including Virginia Polytechnic Institute & State University Top agencies DOT (Department of Transportation) Army (Department of the Army)	$1,593,523	0.2%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2023 and #16 in FY2024; down 43 since FY2024.
60	Industrial Inspection & Analysis Inc. 2 awardees, including Tribologik Corp and IIA Lifting Services, Inc. Top agencies Navy (Department of the Navy) DOI (Department of the Interior) USAF (Department of the Air Force)	$1,561,367	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
61	Fortive Corporation 4 awardees, including Landauer, Inc., Pacific Scientific Energetic Materials Co California LLC and Fluke Electronics Corp Top agencies Navy (Department of the Navy) VA (Department of Veterans Affairs) Army (Department of the Army)	$1,537,686	0.2%	Rank history: not on the FY2021–FY2024 lists; up 63 since FY2024.
62	Jung Research and Development Corp Top agencies MDA (DOD Missile Defense Agency) USAF (Department of the Air Force)	$1,536,535	0.2%	Rank history: not on the FY2021 list, #54 in FY2022, #53 in FY2023 and #49 in FY2024; down 13 since FY2024.
63	Battelle Memorial Institute Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,492,768	0.2%	Rank history: #73 in FY2021, #74 in FY2022, #96 in FY2023 and #74 in FY2024; up 11 since FY2024.
64	New York Genome Center, Inc. Top agencies HHS (Department of Health and Human Services)	$1,492,431	0.2%	Rank history: #20 in FY2021, not on the FY2022–FY2023 lists and #26 in FY2024; down 38 since FY2024.
65	Asrt, Inc. Top agencies HHS (Department of Health and Human Services)	$1,454,838	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
66	Valogic Bio, LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$1,424,691	0.2%	Rank history: not on the FY2021 list, #82 in FY2022, #66 in FY2023 and #99 in FY2024; up 33 since FY2024.
67	MGA Research Corporation 3 awardees Top agencies DOT (Department of Transportation)	$1,393,549	0.2%	Rank history: not on the FY2021 list, #76 in FY2022, #68 in FY2023 and not on the FY2024 list; returned.
68	Ardl Inc. Top agencies Army (Department of the Army) EPA (Environmental Protection Agency)	$1,371,784	0.2%	Rank history: not on the FY2021 list, #92 in FY2022, #56 in FY2023 and not on the FY2024 list; up 264 since FY2024.
69	DNA Labs International Inc Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$1,349,550	0.2%	Rank history: not on the FY2021 list, #81 in FY2022, #70 in FY2023 and #64 in FY2024; down 5 since FY2024.
70	I-2-I Solutions, Inc. Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior) Army (Department of the Army)	$1,326,502	0.2%	Rank history: not on the FY2021–FY2024 lists; up 72 since FY2024.
71	Chugai Technos Corporation Top agencies Navy (Department of the Navy) Army (Department of the Army)	$1,322,788	0.2%	Rank history: not on the FY2021–FY2024 lists; up 116 since FY2024.
72	Teraspatial Inc. Top agencies DMEA (Defense Microelectronics Activity)	$1,315,089	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
73	SGS Axys Analytical Services Ltd. Top agencies DOI (Department of the Interior)	$1,291,200	0.2%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2024; up 8 since FY2024.
74	Calspan, LLC Top agencies DOT (Department of Transportation)	$1,290,723	0.2%	Rank history: not on the FY2021–FY2023 lists and #90 in FY2024; up 16 since FY2024.
75	Dayton T. Brown, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy)	$1,268,678	0.2%	Rank history: #100 in FY2021 and not on the FY2022–FY2024 lists; up 83 since FY2024.
76	Enomis Idril JV LLC Top agencies Army (Department of the Army)	$1,255,337	0.2%	Rank history: not on the FY2021–FY2024 lists; up 211 since FY2024.
77	Dynamic Research, Inc. Top agencies DOT (Department of Transportation)	$1,246,055	0.2%	Rank history: not on the FY2021–FY2023 lists and #55 in FY2024; down 22 since FY2024.
78	PPI Technical Services LLC Top agencies USAF (Department of the Air Force)	$1,242,560	0.2%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2023 and #87 in FY2024; up 9 since FY2024.
79	City of San Diego Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$1,216,521	0.2%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2024; up 9 since FY2024.
80	Transnetyx Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,205,084	0.2%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2024; down 1 since FY2024.
81	Winergy LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$1,181,863	0.2%	Rank history: not on the FY2021 list, #98 in FY2022 and not on the FY2023–FY2024 lists; up 20 since FY2024.
82	Spectral Energies LLC Top agencies Army (Department of the Army)	$1,150,216	0.2%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2024; up 12 since FY2024.
83	Applied Research In Acoustics LLC Top agencies Army (Department of the Army)	$1,149,000	0.2%	Rank history: not on the FY2021–FY2023 lists and #95 in FY2024; up 12 since FY2024.
84	Doc Development, Inc. Top agencies USAF (Department of the Air Force)	$1,144,630	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #91 in FY2024; up 7 since FY2024.
85	Danaher Corporation 5 awardees, including Cepheid, Beckman Coulter, Inc. and Integrated DNA Technologies, Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$1,143,001	0.2%	Rank history: not on the FY2021–FY2024 lists; up 19 since FY2024.
86	Amentum Holdings, Inc. Through Amentum Services, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,121,510	0.2%	Rank history: not on the FY2021–FY2024 lists; up 157 since FY2024.
87	Hyperion Biotechnology, Inc. Top agencies VA (Department of Veterans Affairs)	$1,100,057	0.2%	Rank history: not on the FY2021–FY2024 lists; up 30 since FY2024.
88	RTI Laboratories Inc. Top agencies DOI (Department of the Interior) DHA (Defense Health Agency) Army (Department of the Army)	$1,093,978	0.2%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023 and #42 in FY2024; down 46 since FY2024.
89	Regents of the University of Michigan Top agencies DOT (Department of Transportation) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$1,071,524	0.2%	Rank history: #96 in FY2021, #29 in FY2022, #34 in FY2023 and #75 in FY2024; down 14 since FY2024.
90	J. Craig Venter Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$1,041,427	0.2%	Rank history: not on the FY2021–FY2022 lists, #98 in FY2023 and not on the FY2024 list; up 15 since FY2024.
91	Deutsches Zentrum FÜR Luft- UND Raumfahrt E.V. Top agencies NASA (National Aeronautics and Space Administration)	$1,032,113	0.2%	Rank history: #46 in FY2021, #26 in FY2022, not on the FY2023 list and #12 in FY2024; down 79 since FY2024.
92	Phigenics LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,025,016	0.2%	Rank history: not on the FY2021–FY2024 lists; up 34 since FY2024.
93	Research Institute At Nationwide Children's Hospital Top agencies HHS (Department of Health and Human Services)	$1,002,589	0.1%	Rank history: not on the FY2021–FY2023 lists and #46 in FY2024; down 47 since FY2024.
94	Nevada System of Higher Education Top agencies DOI (Department of the Interior)	$1,002,122	0.1%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; down 62 since FY2024.
95	Clym Environmental Services LLC Top agencies HHS (Department of Health and Human Services)	$998,383	0.1%	Rank history: not on the FY2021–FY2023 lists and #68 in FY2024; down 27 since FY2024.
96	Converge Federal Solutions JV, LLC Top agencies Army (Department of the Army)	$975,248	0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023 and not on the FY2024 list; up 7 since FY2024.
97	Bureau Veritas North America Inc 2 awardees Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) Army (Department of the Army)	$973,537	0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #92 in FY2024; down 5 since FY2024.
98	DCS Corporation Top agencies USAF (Department of the Air Force)	$894,706	0.1%	Rank history: not on the FY2021 list, #71 in FY2022, not on the FY2023 list and #96 in FY2024; down 2 since FY2024.
99	Transcat, Inc. Top agencies Army (Department of the Army) DHS (Department of Homeland Security)	$886,751	0.1%	Rank history: not on the FY2021–FY2024 lists; up 135 since FY2024.
100	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; new.

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 $675 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. 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.
• Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
• Rank changes compare with FY2024. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list. The step from FY2024 takes the color of the rank change beside it.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers