Top 100 Contractors in PSC F105: Pesticides Support Services, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	CDS Services Inc. Top agencies VA (Department of Veterans Affairs) Commerce (Department of Commerce) HHS (Department of Health and Human Services)	$1,273,543	10.9%	Rank history: #3 in FY2021, #2 in FY2022, #3 in FY2023, #2 in FY2024 and #3 in FY2025; up 1 since Aug 2024–Jul 2025.
2	Crop Jet Aviation, L.L.C. Top agencies DOI (Department of the Interior)	$996,349	8.6%	Rank history: not on the FY2021–FY2023 lists, #1 in FY2024 and #2 in FY2025; new, not ranked in Aug 2024–Jul 2025.
3	Aero S E A T Inc. Top agencies DOI (Department of the Interior)	$972,641	8.4%	Rank history: not on the FY2021–FY2023 lists, #68 in FY2024 and #1 in FY2025; down 2 since Aug 2024–Jul 2025.
4	Silhouette Farm & Forestry, LLC Top agencies USDA (Department of Agriculture)	$779,436	6.7%	Rank history: not on the FY2021 list, #51 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
5	Valley Air LLC Top agencies DOI (Department of the Interior)	$513,769	4.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
6	Chugach Alaska Corporation Through Chugach Solutions Enterprise, LLC Top agencies Navy (Department of the Navy)	$298,502	2.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
7	Ground Up Arborist & Forestry, LLC Top agencies DOI (Department of the Interior)	$234,237	2.0%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; up 15 since Aug 2024–Jul 2025.
8	Rainbow Tree Company Through Rainbow Treecare Scientific Advancements Inc. Top agencies USDA (Department of Agriculture)	$193,028	1.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
9	Electripro, Inc. Top agencies DHS (Department of Homeland Security)	$176,689	1.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
10	Alexandria Pest Services, Inc. Top agencies DOL (Department of Labor) SSA (Social Security Administration)	$172,436	1.5%	Rank history: #34 in FY2021, #33 in FY2022, not on the FY2023 list, #23 in FY2024 and #7 in FY2025; down 3 since Aug 2024–Jul 2025.
11	Derosa Environmental Consulting Inc. Top agencies Army (Department of the Army)	$159,284	1.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
12	Parker, Anthony Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$152,803	1.3%	Rank history: not on the FY2021 list, #55 in FY2022, #27 in FY2023, #28 in FY2024 and #9 in FY2025; down 1 since Aug 2024–Jul 2025.
13	Best Pest Control of Manhattan, LLC Top agencies Army (Department of the Army)	$146,983	1.3%	Rank history: #23 in FY2021, #13 in FY2022, #15 in FY2023, #20 in FY2024 and #16 in FY2025; up 5 since Aug 2024–Jul 2025.
14	Back Forty Solutions Inc. Top agencies DOI (Department of the Interior)	$144,705	1.2%	Rank history: not on the FY2021 list, #20 in FY2022, #7 in FY2023, #91 in FY2024 and #5 in FY2025; down 10 since Aug 2024–Jul 2025.
15	Thompson Land Management & Clearing LLC Top agencies DOI (Department of the Interior)	$142,890	1.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
16	Chosh Adin Consulting LLC Top agencies DOI (Department of the Interior) HHS (Department of Health and Human Services)	$135,696	1.2%	Rank history: not on the FY2021–FY2024 lists and #25 in FY2025; up 38 since Aug 2024–Jul 2025.
17	Gulf South Research Corp Top agencies DOI (Department of the Interior)	$130,990	1.1%	Rank history: not on the FY2021–FY2022 lists, #1 in FY2023, #89 in FY2024 and #18 in FY2025; new, not ranked in Aug 2024–Jul 2025.
18	Cut N Edge Inc. Top agencies Army (Department of the Army)	$130,340	1.1%	Rank history: not on the FY2021 list, #50 in FY2022, #56 in FY2023, #52 in FY2024 and #36 in FY2025; up 39 since Aug 2024–Jul 2025.
19	Dauterive Contractors, Inc. Top agencies Army (Department of the Army)	$123,500	1.1%	Rank history: not on the FY2021 list, #5 in FY2022, #14 in FY2023, #19 in FY2024 and #22 in FY2025; up 10 since Aug 2024–Jul 2025.
20	Chempro Services, Inc. Top agencies DOI (Department of the Interior) Army (Department of the Army)	$121,600	1.0%	Rank history: not on the FY2021–FY2022 lists, #51 in FY2023, #15 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
21	County of Brunswick Top agencies Army (Department of the Army)	$120,000	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
22	Rech Baugesellschaft MBH Top agencies Army (Department of the Army)	$119,035	1.0%	Rank history: #42 in FY2021, #35 in FY2022, #43 in FY2023, #69 in FY2024 and #33 in FY2025; up 43 since Aug 2024–Jul 2025.
23	ManTech International Corporation Through Mantech Advanced Systems International, Inc. Top agencies DOI (Department of the Interior)	$114,063	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
24	Summit Helicopters Inc. Top agencies DOI (Department of the Interior)	$113,191	1.0%	Rank history: not on the FY2021–FY2022 lists, #92 in FY2023, not on the FY2024 list and #10 in FY2025; up 15 since Aug 2024–Jul 2025.
25	Pullig Contracting Co Top agencies Army (Department of the Army)	$112,930	1.0%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; up 7 since Aug 2024–Jul 2025.
26	Integral Consulting Inc. Top agencies DOI (Department of the Interior)	$111,400	1.0%	Rank history: not on the FY2021–FY2022 lists, #25 in FY2023, #42 in FY2024 and #21 in FY2025; up 15 since Aug 2024–Jul 2025.
27	Aaron G Holbrook Top agencies DOI (Department of the Interior)	$108,697	0.9%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
28	JR Spraying LLC Top agencies DOI (Department of the Interior)	$107,660	0.9%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, #30 in FY2024 and #23 in FY2025; up 19 since Aug 2024–Jul 2025.
29	David Industrial Services, LLC Top agencies Army (Department of the Army)	$90,736	0.8%	Rank history: not on the FY2021 list, #28 in FY2022, #31 in FY2023, #34 in FY2024 and #24 in FY2025; up 8 since Aug 2024–Jul 2025.
30	Wilson Herbicide Spraying, LLC Top agencies DOI (Department of the Interior)	$81,997	0.7%	Rank history: not on the FY2021–FY2024 lists and #27 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Red Mtn. Resource LLC Top agencies DOI (Department of the Interior)	$80,000	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
32	J3 Enterprise LLC Top agencies VA (Department of Veterans Affairs) DOI (Department of the Interior)	$76,108	0.7%	Rank history: not on the FY2021 list, #44 in FY2022, #54 in FY2023, not on the FY2024 list and #26 in FY2025; up 6 since Aug 2024–Jul 2025.
33	Marshfield Forest Service, Inc. Top agencies DOI (Department of the Interior)	$75,970	0.7%	Rank history: not on the FY2021–FY2024 lists and #11 in FY2025; down 21 since Aug 2024–Jul 2025.
34	County of Siskiyou Top agencies DOI (Department of the Interior)	$65,000	0.6%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; up 8 since Aug 2024–Jul 2025.
35	WMA Noxious Weed / Range Specialists LLC Top agencies DOI (Department of the Interior)	$64,500	0.6%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023, #47 in FY2024 and #30 in FY2025; down 4 since Aug 2024–Jul 2025.
36	Apex Leadership Group LLC Top agencies DOI (Department of the Interior)	$64,050	0.6%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #61 in FY2025; up 43 since Aug 2024–Jul 2025.
37	Monture Creek Land Management, Inc. Top agencies USDA (Department of Agriculture)	$63,222	0.5%	Rank history: #16 in FY2021, #15 in FY2022, #8 in FY2023, #4 in FY2024 and #14 in FY2025; down 18 since Aug 2024–Jul 2025.
38	Helena Weed Control, LLC Top agencies USDA (Department of Agriculture)	$62,741	0.5%	Rank history: not on the FY2021 list, #26 in FY2022, #4 in FY2023, #3 in FY2024 and #60 in FY2025; down 15 since Aug 2024–Jul 2025.
39	Hemlock Consulting, LLC Top agencies DOI (Department of the Interior)	$62,500	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
40	Mountain Home Services Top agencies Army (Department of the Army)	$61,119	0.5%	Rank history: not on the FY2021 list, #17 in FY2022, #20 in FY2023, #22 in FY2024 and #12 in FY2025; down 16 since Aug 2024–Jul 2025.
41	TSR Solutions LLC Top agencies DOI (Department of the Interior)	$60,000	0.5%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; up 9 since Aug 2024–Jul 2025.
42	Conasa S.R.L. Top agencies DOS (Department of State)	$58,611	0.5%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; up 21 since Aug 2024–Jul 2025.
43	Master of None, LLC Top agencies DOI (Department of the Interior)	$57,725	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
44	Hart Custom Applicators LLC Top agencies DOI (Department of the Interior)	$57,570	0.5%	Rank history: #77 in FY2021, #74 in FY2022, #33 in FY2023, #60 in FY2024 and #34 in FY2025; down 14 since Aug 2024–Jul 2025.
45	Diverse Pest Management Top agencies USAF (Department of the Air Force)	$55,682	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
46	East Rock Farms LLC Top agencies Army (Department of the Army)	$54,431	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
47	Habitat Protection, Inc. Top agencies USDA (Department of Agriculture)	$53,904	0.5%	Rank history: not on the FY2021–FY2024 lists and #35 in FY2025; new, not ranked in Aug 2024–Jul 2025.
48	Headwaters Flying Service LLC Top agencies DOI (Department of the Interior)	$48,991	0.4%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and #40 in FY2025; up 25 since Aug 2024–Jul 2025.
49	Brush & Weed Control Specialists, Inc. Top agencies DOI (Department of the Interior)	$47,500	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
50	Aml-American Made Logistics Top agencies VA (Department of Veterans Affairs)	$45,910	0.4%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and #45 in FY2025; up 12 since Aug 2024–Jul 2025.
51	Morris AG Air & Sons, Inc. Top agencies DOI (Department of the Interior)	$44,996	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
52	Orkin, LLC Top agencies EPA (Environmental Protection Agency) DOE (Department of Energy)	$44,623	0.4%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #32 in FY2025; down 32 since Aug 2024–Jul 2025.
53	Missiongate Government Solutions LLC Top agencies DOI (Department of the Interior)	$44,301	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
54	Ryan Endeavors LLC Top agencies DOI (Department of the Interior)	$42,887	0.4%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023, not on the FY2024 list and #49 in FY2025; new, not ranked in Aug 2024–Jul 2025.
55	Ember of Love, LLC Top agencies DOI (Department of the Interior)	$42,600	0.4%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; new, not ranked in Aug 2024–Jul 2025.
56	Innovative Mosquito Management, Inc. Top agencies DOI (Department of the Interior)	$40,550	0.3%	Rank history: not on the FY2021–FY2023 lists, #84 in FY2024 and #75 in FY2025; down 4 since Aug 2024–Jul 2025.
57	Coastal Air Service Inc. Top agencies DOI (Department of the Interior)	$40,222	0.3%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; new, not ranked in Aug 2024–Jul 2025.
58	Benson Farms Inc. Top agencies DOI (Department of the Interior)	$39,903	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
59	Kcsr Inc. Top agencies HHS (Department of Health and Human Services) DHS (Department of Homeland Security)	$39,600	0.3%	Rank history: not on the FY2021 list, #43 in FY2022, #66 in FY2023, #79 in FY2024 and #42 in FY2025; down 13 since Aug 2024–Jul 2025.
60	CE Solution Plus Corp. Top agencies DOE (Department of Energy)	$39,300	0.3%	Rank history: not on the FY2021–FY2024 lists and #54 in FY2025; new, not ranked in Aug 2024–Jul 2025.
61	Anubis Services Inc. Top agencies DOI (Department of the Interior)	$39,072	0.3%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; up 39 since Aug 2024–Jul 2025.
62	(Ga84) Dreamscape Designs, LLC Top agencies DOI (Department of the Interior)	$38,000	0.3%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; new, not ranked in Aug 2024–Jul 2025.
63	Chemtica USA LLC Top agencies USDA (Department of Agriculture)	$37,800	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
64	Ram Pest Management LLC Top agencies HHS (Department of Health and Human Services)	$37,560	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
65	Bertagna Custom Farming, Inc. Top agencies USDA (Department of Agriculture)	$35,280	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
66	Bar C Bar Enterprises, Inc. Top agencies VA (Department of Veterans Affairs)	$32,185	0.3%	Rank history: #78 in FY2021, #79 in FY2022, #81 in FY2023, #83 in FY2024 and #59 in FY2025; up 12 since Aug 2024–Jul 2025.
67	Collaborating Techs LLC Top agencies DOI (Department of the Interior)	$31,855	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
68	Just-In-Time Termite & Pest LLC Top agencies DOJ (Department of Justice)	$31,695	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
69	Silva TECH II, Inc. Top agencies DOI (Department of the Interior)	$31,360	0.3%	Rank history: not on the FY2021–FY2024 lists and #62 in FY2025; new, not ranked in Aug 2024–Jul 2025.
70	Nutrien AG Solutions, Inc. Top agencies DOI (Department of the Interior)	$31,325	0.3%	Rank history: not on the FY2021–FY2024 lists and #94 in FY2025; new, not ranked in Aug 2024–Jul 2025.
71	Mid Dakota Vegetation Management, LLC Top agencies Army (Department of the Army)	$29,848	0.3%	Rank history: #31 in FY2021, #38 in FY2022, #34 in FY2023, #62 in FY2024 and #53 in FY2025; down 3 since Aug 2024–Jul 2025.
72	Resource Management Associates LLC Top agencies DOI (Department of the Interior)	$29,500	0.3%	Rank history: not on the FY2021 list, #65 in FY2022, #86 in FY2023, not on the FY2024 list and #64 in FY2025; new, not ranked in Aug 2024–Jul 2025.
73	Helicopter Applicators Inc. Top agencies DOI (Department of the Interior)	$28,275	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
74	Larson Helicopters LLC Top agencies DOI (Department of the Interior)	$26,840	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
75	Kekolu Contracting, LLC Top agencies USAF (Department of the Air Force)	$26,431	0.2%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Aug 2024–Jul 2025.
76	Pendergrafts', Inc. Top agencies USDA (Department of Agriculture)	$25,956	0.2%	Rank history: not on the FY2021–FY2023 lists, #93 in FY2024 and #67 in FY2025; up 6 since Aug 2024–Jul 2025.
77	Reed Bob Pest Control Inc. Top agencies DOI (Department of the Interior)	$25,356	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
78	Peractos LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$25,218	0.2%	Rank history: not on the FY2021–FY2024 lists and #68 in FY2025; up 18 since Aug 2024–Jul 2025.
79	Blue Mule AG Solutions LLC Top agencies DOI (Department of the Interior)	$25,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
80	Zollinger AG, LLC Top agencies DOI (Department of the Interior)	$25,000	0.2%	Rank history: not on the FY2021 list, #96 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
81	California Invasive Plant Council Top agencies DOI (Department of the Interior)	$25,000	0.2%	Rank history: not on the FY2021 list, #8 in FY2022, not on the FY2023 list, #26 in FY2024 and not on the FY2025 list; down 48 since Aug 2024–Jul 2025.
82	Agriserve Pest Control Incorporated Top agencies USDA (Department of Agriculture)	$24,998	0.2%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; new, not ranked in Aug 2024–Jul 2025.
83	Western Weed Control LLC Top agencies DOI (Department of the Interior)	$23,268	0.2%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023, #49 in FY2024 and #58 in FY2025; up 30 since Aug 2024–Jul 2025.
84	Bayou Dusters LLC Top agencies DOI (Department of the Interior)	$23,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #79 in FY2025; up 8 since Aug 2024–Jul 2025.
85	Great Basin Restoration, LLC Top agencies DOI (Department of the Interior)	$22,622	0.2%	Rank history: #97 in FY2021, #100 in FY2022, not on the FY2023–FY2024 lists and #69 in FY2025; down 2 since Aug 2024–Jul 2025.
86	Acacia Investments LLC Top agencies DOI (Department of the Interior)	$21,525	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
87	Antelope Creek Wildlife & Ponds LLC Top agencies Army (Department of the Army)	$21,000	0.2%	Rank history: not on the FY2021–FY2025 lists; up 29 since Aug 2024–Jul 2025.
88	Aquatic Environment Consultants, Inc. Top agencies DOI (Department of the Interior)	$20,075	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
89	Phoenix Environmental Design, Inc. Top agencies DOI (Department of the Interior)	$19,800	0.2%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Aug 2024–Jul 2025.
90	Radice Enterprises, LLC Top agencies Army (Department of the Army)	$19,429	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
91	J. Sanders Prime Consulting LLC Top agencies DHS (Department of Homeland Security)	$19,136	0.2%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; down 4 since Aug 2024–Jul 2025.
92	County of New Hanover Top agencies Army (Department of the Army)	$19,000	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
93	Conservation Connects LLC Top agencies DOI (Department of the Interior)	$18,927	0.2%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 18 since Aug 2024–Jul 2025.
94	Cline Air Services, LLC Top agencies DOI (Department of the Interior)	$17,100	0.1%	Rank history: not on the FY2021 list, #78 in FY2022, not on the FY2023–FY2024 lists and #93 in FY2025; down 17 since Aug 2024–Jul 2025.
95	Powell Industries, Inc. Top agencies VA (Department of Veterans Affairs)	$17,064	0.1%	Rank history: not on the FY2021 list, #94 in FY2022, not on the FY2023–FY2024 lists and #92 in FY2025; up 7 since Aug 2024–Jul 2025.
96	Rue Forest Contracting, Inc. Top agencies DOI (Department of the Interior)	$17,009	0.1%	Rank history: not on the FY2021–FY2025 lists; up 39 since Aug 2024–Jul 2025.
97	Trical Inc. Top agencies USDA (Department of Agriculture)	$16,938	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
98	Integrity and Honor LLC Top agencies DOI (Department of the Interior)	$16,920	0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; up 5 since Aug 2024–Jul 2025.
99	Jacquelin Poasa Faaleava Top agencies USDA (Department of Agriculture)	$16,632	0.1%	Rank history: #100 in FY2021, not on the FY2022–FY2024 lists and #97 in FY2025; up 6 since Aug 2024–Jul 2025.
100	Basin Fertilizer & Chemical Co., LLC Top agencies DOI (Department of the Interior)	$16,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #99 in FY2025; up 6 since Aug 2024–Jul 2025.

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 $11.6 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. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
• Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
• Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
• Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
• Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers