Top 100 Contractors in NAICS 11: Agriculture, Forestry, Fishing and Hunting, FY2021

Name: Top 100 Contractors in NAICS 11: Agriculture, Forestry, Fishing and Hunting, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 25% of FY2021 NAICS 11 contract dollars

Contract obligations: $1,047,285,305 Net of deobligations, by contracts coded NAICS 11 or a code under it
Contractors: 2,900 Parent companies with an obligation
Largest contractor: Perimeter Solutions LP $139 million, 12.3% 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	Perimeter Solutions LP 2 awardees Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$138,770,613	12.3%	Rank history: #1 in FY2022, #1 in FY2023 and not on the FY2024–FY2025 lists; unchanged since FY2020.
2	Envigo RMS Holding Corp. 2 awardees, including Envigo Global Services Inc. and Envigo RMS LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) USDA (Department of Agriculture)	$32,426,600	2.9%	Rank history: not on the FY2022 list, #3 in FY2023 and not on the FY2024–FY2025 lists; up 26 since FY2020.
3	GPC Consolidated Reporting Top agencies USDA (Department of Agriculture)	$30,027,067	2.7%	Rank history: #73 in FY2022, #70 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
4	Paramedics Unlimited, LLC Top agencies USDA (Department of Agriculture)	$14,988,237	1.3%	Rank history: not on the FY2022–FY2025 lists; up 117 since FY2020.
5	Aero Spray Inc. Top agencies DOI (Department of the Interior)	$14,606,599	1.3%	Rank history: not on the FY2022–FY2023 lists, #13 in FY2024 and #17 in FY2025; up 30 since FY2020.
6	Charles River Laboratories International Inc. Through Charles River Laboratories, Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) Navy (Department of the Navy)	$10,279,060	0.9%	Rank history: #8 in FY2022, #15 in FY2023, #15 in FY2024 and #11 in FY2025; unchanged since FY2020.
7	Imperial Forestry, Incorporated Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$10,131,003	0.9%	Rank history: #7 in FY2022, #8 in FY2023, #7 in FY2024 and #15 in FY2025; down 2 since FY2020.
8	Western Pilot Service Inc. Top agencies DOI (Department of the Interior)	$9,961,512	0.9%	Rank history: #42 in FY2022, #38 in FY2023, #10 in FY2024 and #9 in FY2025; up 3 since FY2020.
9	G E Forestry, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$9,423,557	0.8%	Rank history: #6 in FY2022, #13 in FY2023, #9 in FY2024 and not on the FY2025 list; down 1 since FY2020.
10	Summitt Forests, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$8,940,722	0.8%	Rank history: #4 in FY2022, #5 in FY2023, #19 in FY2024 and #24 in FY2025; down 6 since FY2020.
11	Cutting Edge Forestry, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$8,538,946	0.8%	Rank history: #11 in FY2022, #25 in FY2023, #25 in FY2024 and not on the FY2025 list; up 18 since FY2020.
12	Adventure Medics LLC Top agencies USDA (Department of Agriculture)	$8,392,473	0.7%	Rank history: #59 in FY2022 and not on the FY2023–FY2025 lists; up 262 since FY2020.
13	Stutz Packing Company Top agencies USDA (Department of Agriculture)	$7,957,265	0.7%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
14	Sweat US LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior) USAF (Department of the Air Force)	$7,944,201	0.7%	Rank history: #14 in FY2022 and not on the FY2023–FY2025 lists; down 7 since FY2020.
15	OC Forestry, Incorporated Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$7,797,571	0.7%	Rank history: #20 in FY2022, #30 in FY2023, #32 in FY2024 and #65 in FY2025; up 1 since FY2020.
16	New Frontier Aviation, LLC Top agencies DOI (Department of the Interior)	$7,409,544	0.7%	Rank history: #41 in FY2022, #71 in FY2023, #22 in FY2024 and #16 in FY2025; up 17 since FY2020.
17	Co Fire Aviation, Inc. Top agencies DOI (Department of the Interior)	$7,376,194	0.7%	Rank history: #52 in FY2022, not on the FY2023 list, #20 in FY2024 and #5 in FY2025; up 2 since FY2020.
18	Crewzers Fire Crew Transport Inc. Top agencies USDA (Department of Agriculture)	$7,191,374	0.6%	Rank history: #30 in FY2022 and not on the FY2023–FY2025 lists; up 75 since FY2020.
19	Fletcher Flying Service Inc. Top agencies DOI (Department of the Interior)	$6,942,251	0.6%	Rank history: #19 in FY2022 and not on the FY2023–FY2025 lists; down 10 since FY2020.
20	Franco Reforestation Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$6,171,553	0.5%	Rank history: #23 in FY2022, #24 in FY2023, #52 in FY2024 and #29 in FY2025; down 8 since FY2020.
21	Miller Timber Services, Inc. Top agencies USDA (Department of Agriculture)	$5,838,636	0.5%	Rank history: #9 in FY2022, #28 in FY2023, #23 in FY2024 and #7 in FY2025; up 1 since FY2020.
22	J3 Contracting, Inc. Top agencies USDA (Department of Agriculture)	$5,690,770	0.5%	Rank history: #27 in FY2022, #62 in FY2023, #29 in FY2024 and #32 in FY2025; down 2 since FY2020.
23	Broken Arrow Horse & Cattle Company LLC Top agencies DOI (Department of the Interior)	$5,420,000	0.5%	Rank history: #45 in FY2022, #33 in FY2023, #16 in FY2024 and #25 in FY2025; down 5 since FY2020.
24	CLT Logging Inc. Top agencies USDA (Department of Agriculture)	$5,231,530	0.5%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
25	Fire Dawg Green, Inc. Top agencies USDA (Department of Agriculture)	$4,756,370	0.4%	Rank history: not on the FY2022–FY2025 lists; up 133 since FY2020.
26	Intents Emergency Response LLC Top agencies USDA (Department of Agriculture)	$4,634,266	0.4%	Rank history: not on the FY2022–FY2024 lists and #88 in FY2025; new, not ranked in FY2020.
27	Outback Firefighting, Inc. Top agencies USDA (Department of Agriculture)	$4,523,225	0.4%	Rank history: #40 in FY2022, not on the FY2023 list, #74 in FY2024 and #49 in FY2025; up 52 since FY2020.
28	Corrections Colorado Department of 2 awardees, including Colorado Department of Corrections and Colorado Department of Public Safety Top agencies DOI (Department of the Interior)	$4,520,000	0.4%	Rank history: #44 in FY2022 and not on the FY2023–FY2025 lists; down 7 since FY2020.
29	Evergreen Flying Service Inc. Top agencies DOI (Department of the Interior)	$4,414,074	0.4%	Rank history: not on the FY2022–FY2023 lists, #50 in FY2024 and #46 in FY2025; up 19 since FY2020.
30	Quicksilver Contracting Co Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$4,399,901	0.4%	Rank history: #36 in FY2022, #19 in FY2023, #67 in FY2024 and not on the FY2025 list; up 8 since FY2020.
31	World Wide Primates Inc. Top agencies HHS (Department of Health and Human Services) Army (Department of the Army) Navy (Department of the Navy)	$4,359,985	0.4%	Rank history: #15 in FY2022, not on the FY2023 list, #90 in FY2024 and not on the FY2025 list; down 1 since FY2020.
32	AAA Mobile Basecamp, LLC Top agencies USDA (Department of Agriculture)	$4,139,873	0.4%	Rank history: #34 in FY2022 and not on the FY2023–FY2025 lists; up 38 since FY2020.
33	G B Aerial Applications Inc. Top agencies DOI (Department of the Interior)	$3,968,050	0.4%	Rank history: #28 in FY2022, #98 in FY2023, not on the FY2024 list and #54 in FY2025; down 6 since FY2020.
34	MP Forestry, Incorporated Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$3,813,418	0.3%	Rank history: #49 in FY2022, #81 in FY2023 and not on the FY2024–FY2025 lists; up 10 since FY2020.
35	20 West, LLC Top agencies DOI (Department of the Interior)	$3,759,940	0.3%	Rank history: not on the FY2022–FY2024 lists and #74 in FY2025; up 21 since FY2020.
36	Buchanan Consulting Services LLC Top agencies USDA (Department of Agriculture)	$3,649,196	0.3%	Rank history: not on the FY2022–FY2025 lists; down 13 since FY2020.
37	C.t.l. Forest Management, Inc. Top agencies USDA (Department of Agriculture)	$3,571,672	0.3%	Rank history: #63 in FY2022, not on the FY2023 list, #28 in FY2024 and not on the FY2025 list; up 49 since FY2020.
38	Aerial Timber Applicators Inc. Top agencies DOI (Department of the Interior)	$3,465,583	0.3%	Rank history: not on the FY2022–FY2023 lists, #42 in FY2024 and #48 in FY2025; up 85 since FY2020.
39	Despain, Kerry, M Top agencies DOI (Department of the Interior)	$3,446,844	0.3%	Rank history: #68 in FY2022, #58 in FY2023, #53 in FY2024 and #39 in FY2025; down 14 since FY2020.
40	Benson Farms, Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$3,441,074	0.3%	Rank history: not on the FY2022–FY2025 lists; up 1 since FY2020.
41	West Forest, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$3,419,480	0.3%	Rank history: not on the FY2022 list, #43 in FY2023, #99 in FY2024 and not on the FY2025 list; up 6 since FY2020.
42	Western Reclamation, Inc. Top agencies DOI (Department of the Interior)	$3,245,656	0.3%	Rank history: not on the FY2022–FY2025 lists; up 4 since FY2020.
43	JIM Johnson Logging, Inc. Top agencies USDA (Department of Agriculture)	$3,204,203	0.3%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
44	Axsus Enterprises LLC Top agencies USDA (Department of Agriculture)	$3,195,814	0.3%	Rank history: #53 in FY2022, #60 in FY2023, not on the FY2024 list and #57 in FY2025; new, not ranked in FY2020.
45	Henrys Aerial Service Inc. Top agencies DOI (Department of the Interior)	$3,193,036	0.3%	Rank history: #29 in FY2022, #61 in FY2023, #36 in FY2024 and #13 in FY2025; down 31 since FY2020.
46	Rough Country Response LLC Top agencies USDA (Department of Agriculture)	$3,163,967	0.3%	Rank history: #65 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
47	Environmental Seeds West LLC Top agencies DOI (Department of the Interior)	$3,163,612	0.3%	Rank history: #47 in FY2022, #64 in FY2023, #75 in FY2024 and #64 in FY2025; down 11 since FY2020.
48	Omalley Brothers Corp Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$3,020,538	0.3%	Rank history: not on the FY2022–FY2023 lists, #12 in FY2024 and not on the FY2025 list; up 416 since FY2020.
49	Alpha Genesis Inc. Top agencies HHS (Department of Health and Human Services)	$2,905,436	0.3%	Rank history: #21 in FY2022, #59 in FY2023, #55 in FY2024 and #77 in FY2025; up 35 since FY2020.
50	Fort Sill Apache Industres LLC 2 awardees, including Apache Homelands LLC Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$2,876,169	0.3%	Rank history: not on the FY2022–FY2025 lists; up 8 since FY2020.
51	J.w. Bamford, Inc. Top agencies USDA (Department of Agriculture)	$2,840,312	0.3%	Rank history: not on the FY2022–FY2025 lists; down 19 since FY2020.
52	Wilderness Medics, Inc. Top agencies USDA (Department of Agriculture)	$2,783,112	0.2%	Rank history: #51 in FY2022 and not on the FY2023–FY2025 lists; unchanged since FY2020.
53	Emigh Wolf Investments LLC Top agencies USDA (Department of Agriculture)	$2,743,495	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
54	University of North Carolina at Chapel Hill Top agencies HHS (Department of Health and Human Services)	$2,741,741	0.2%	Rank history: not on the FY2022–FY2025 lists; up 46 since FY2020.
55	Top Gun Lighting and Industrial Supplies, LLC Top agencies USDA (Department of Agriculture)	$2,729,847	0.2%	Rank history: #22 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
56	Leading Edge Aviation, LLC Top agencies DOI (Department of the Interior)	$2,692,534	0.2%	Rank history: not on the FY2022–FY2023 lists, #98 in FY2024 and #84 in FY2025; up 90 since FY2020.
57	Air Spray USA Inc. Top agencies DOI (Department of the Interior)	$2,656,029	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
58	State of Arizona Through Department of Corrections Arizona Top agencies DOI (Department of the Interior)	$2,640,836	0.2%	Rank history: #97 in FY2022, #91 in FY2023 and not on the FY2024–FY2025 lists; up 62 since FY2020.
59	Front Line Ems LLC Top agencies USDA (Department of Agriculture)	$2,634,038	0.2%	Rank history: #66 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
60	AAA Mobile Solutions Inc. Top agencies USDA (Department of Agriculture)	$2,595,619	0.2%	Rank history: not on the FY2022–FY2025 lists; up 37 since FY2020.
61	Frontline Medical LLC Top agencies USDA (Department of Agriculture)	$2,542,551	0.2%	Rank history: not on the FY2022–FY2025 lists; up 44 since FY2020.
62	Emergency Response Logistics, LLC Top agencies USDA (Department of Agriculture)	$2,397,243	0.2%	Rank history: #25 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
63	G & R Livestock Inc. Top agencies DOI (Department of the Interior)	$2,370,200	0.2%	Rank history: not on the FY2022–FY2024 lists and #80 in FY2025; up 41 since FY2020.
64	Cattoor Livestock Roundup, Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$2,345,024	0.2%	Rank history: #43 in FY2022 and not on the FY2023–FY2025 lists; down 24 since FY2020.
65	Carl Potter Forestry Inc. Top agencies USDA (Department of Agriculture)	$2,331,857	0.2%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
66	Best Practice Medicine LLC Top agencies USDA (Department of Agriculture)	$2,247,105	0.2%	Rank history: not on the FY2022–FY2025 lists; up 257 since FY2020.
67	El Dorado Water & Shower Service, Inc. Top agencies USDA (Department of Agriculture)	$2,222,575	0.2%	Rank history: not on the FY2022 list, #95 in FY2023, not on the FY2024 list and #94 in FY2025; down 12 since FY2020.
68	Event Medical Solutions Unlimited, LLC Top agencies USDA (Department of Agriculture)	$2,207,506	0.2%	Rank history: not on the FY2022–FY2025 lists; up 287 since FY2020.
69	Cooke & Associates Inc. Top agencies USDA (Department of Agriculture)	$2,143,203	0.2%	Rank history: not on the FY2022–FY2025 lists; up 314 since FY2020.
70	Sierra Nevada Forest Management LLC Top agencies USDA (Department of Agriculture)	$2,130,064	0.2%	Rank history: not on the FY2022 list, #68 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
71	Ponderosa Timberland, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$2,087,046	0.2%	Rank history: #18 in FY2022, #27 in FY2023, #11 in FY2024 and #68 in FY2025; down 45 since FY2020.
72	Expeditors By Lindale Inc. Top agencies USDA (Department of Agriculture)	$2,067,624	0.2%	Rank history: #32 in FY2022, #45 in FY2023 and not on the FY2024–FY2025 lists; down 29 since FY2020.
73	Sprout Forestry Incorporated Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$2,063,849	0.2%	Rank history: #48 in FY2022, #40 in FY2023, #49 in FY2024 and #38 in FY2025; up 111 since FY2020.
74	Fireline Medics LLC Top agencies USDA (Department of Agriculture)	$2,055,243	0.2%	Rank history: #91 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
75	Columbia Basin Helicopter, Inc. Top agencies DOI (Department of the Interior) USDA (Department of Agriculture)	$2,049,032	0.2%	Rank history: not on the FY2022–FY2025 lists; up 106 since FY2020.
76	Vestring Ranch Top agencies DOI (Department of the Interior)	$1,995,522	0.2%	Rank history: not on the FY2022 list, #83 in FY2023 and not on the FY2024–FY2025 lists; down 1 since FY2020.
77	Mark Jones Trucking Inc. Top agencies USDA (Department of Agriculture)	$1,977,545	0.2%	Rank history: not on the FY2022 list, #82 in FY2023 and not on the FY2024–FY2025 lists; up 24 since FY2020.
78	Ponderosa Reforestation, Inc. Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$1,969,527	0.2%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
79	Louisiana Board of Regents Through University of Louisiana At Lafayette Top agencies HHS (Department of Health and Human Services)	$1,955,527	0.2%	Rank history: not on the FY2022–FY2025 lists; up 29 since FY2020.
80	All American Emergency Services Top agencies USDA (Department of Agriculture)	$1,955,077	0.2%	Rank history: not on the FY2022 list, #51 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
81	Kathleen B Mullendore Trust Top agencies DOI (Department of the Interior)	$1,923,904	0.2%	Rank history: not on the FY2022–FY2025 lists; down 15 since FY2020.
82	Southwest Contracting & Associates LLC Top agencies USDA (Department of Agriculture)	$1,919,788	0.2%	Rank history: #26 in FY2022, #36 in FY2023, #83 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
83	Jennifer Elaine Cota Top agencies DOI (Department of the Interior)	$1,856,400	0.2%	Rank history: not on the FY2022–FY2025 lists; up 96 since FY2020.
84	Hickey Bros Research LLC Top agencies DOI (Department of the Interior)	$1,853,979	0.2%	Rank history: not on the FY2022–FY2025 lists; down 2 since FY2020.
85	Scorched Earth Services, LLC Top agencies DOI (Department of the Interior)	$1,834,233	0.2%	Rank history: not on the FY2022–FY2025 lists; down 18 since FY2020.
86	Grand Eagle Summit LLC Top agencies DOI (Department of the Interior)	$1,819,056	0.2%	Rank history: not on the FY2022 list, #66 in FY2023 and not on the FY2024–FY2025 lists; down 6 since FY2020.
87	Hart Ventures Inc. Top agencies USDA (Department of Agriculture)	$1,816,681	0.2%	Rank history: not on the FY2022–FY2025 lists; up 85 since FY2020.
88	Mountain Medics Inc. Top agencies USDA (Department of Agriculture)	$1,799,874	0.2%	Rank history: #74 in FY2022 and not on the FY2023–FY2025 lists; up 24 since FY2020.
89	PRT Forest Regeneration Income Through PRT USA Inc. Top agencies DOI (Department of the Interior)	$1,799,146	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
90	Drummond Land and Cattle Co Top agencies DOI (Department of the Interior)	$1,784,981	0.2%	Rank history: not on the FY2022 list, #67 in FY2023 and not on the FY2024–FY2025 lists; down 18 since FY2020.
91	Mustang Holdings, LLC Top agencies DOI (Department of the Interior)	$1,773,363	0.2%	Rank history: not on the FY2022 list, #63 in FY2023 and not on the FY2024–FY2025 lists; down 4 since FY2020.
92	Plumas Sanitation, Inc. Top agencies USDA (Department of Agriculture)	$1,766,586	0.2%	Rank history: not on the FY2022–FY2025 lists; up 383 since FY2020.
93	C D Warner Livestock LLC Top agencies DOI (Department of the Interior)	$1,717,193	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
94	Council of Athabascan Tribal Governments, Inc. Top agencies DOI (Department of the Interior)	$1,711,733	0.2%	Rank history: not on the FY2022–FY2025 lists; down 26 since FY2020.
95	Oregon State of 4 awardees, including State of Oregon Department of Fish and Wildlife, Oregon Dept of Agriculture and Pacific States Marine Fisheries Commission Top agencies Army (Department of the Army) DOI (Department of the Interior) USDA (Department of Agriculture)	$1,702,039	0.2%	Rank history: not on the FY2022–FY2025 lists; down 12 since FY2020.
96	Vegetation Management West, L.P. Top agencies DOE (Department of Energy) USDA (Department of Agriculture)	$1,701,840	0.2%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
97	Safaa Al Rawaby Top agencies USSOCOM (United States Special Operations Command)	$1,698,589	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	American Fire Services, L.L.C. Top agencies USDA (Department of Agriculture)	$1,693,614	0.2%	Rank history: not on the FY2022–FY2025 lists; up 134 since FY2020.
99	Bucks Sanitary Service Inc. Top agencies USDA (Department of Agriculture)	$1,689,122	0.2%	Rank history: not on the FY2022–FY2025 lists; up 298 since FY2020.
100	Nevada State Veterans Home 3 awardees, including Nevada Department of Corrections and Nevada Division of Forestry Top agencies DOI (Department of the Interior)	$1,687,663	0.1%	Rank history: not on the FY2022 list, #80 in FY2023 and not on the FY2024–FY2025 lists; down 37 since FY2020.

Show 75 more

100 of 2,900 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 11

Code	Net obligations	Largest contractor
115 Support Activities for Agriculture and Forestry	$920,162,211	Perimeter Solutions LP
112 Animal Production and Aquaculture	$70,691,922	Envigo RMS Holding Corp.
111 Crop Production	$30,931,929	Stutz Packing Company
113 Forestry and Logging	$20,532,144	Environmental Seeds West LLC
114 Fishing, Hunting and Trapping	$4,967,098	Hickey Bros Research 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 $1.13 billion 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.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. 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 FY2020. "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 FY2020 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

Who were the top 10 NAICS 11 contractors in FY2021?

1. Perimeter Solutions LP ($139M), 2. Envigo RMS Holding Corp. ($32.4M), 3. GPC Consolidated Reporting ($30M), 4. Paramedics Unlimited, LLC ($15M), 5. Aero Spray Inc. ($14.6M), 6. Charles River Laboratories International Inc. ($10.3M), 7. Imperial Forestry, Incorporated ($10.1M), 8. Western Pilot Service Inc. ($9.96M), 9. G E Forestry, Inc. ($9.42M), 10. Summitt Forests, Inc. ($8.94M).

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