Top 37 Contractors in PSC B509: Endangered Species Studies – Plant and Animal, Aug 2025–Jul 2026

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Everfox LLC Top agencies USAF (Department of the Air Force)	$8,878,231	46.1%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #1 in FY2025; unchanged since Aug 2024–Jul 2025.
2	Osage Nation Energy Services LLC Top agencies Army (Department of the Army)	$2,498,932	13.0%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023, #8 in FY2024 and #3 in FY2025; up 9 since Aug 2024–Jul 2025.
3	Oneida-Stantec JV LLC Top agencies DOI (Department of the Interior)	$1,540,323	8.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
4	Bio-West Inc. Top agencies DOI (Department of the Interior)	$823,089	4.3%	Rank history: #21 in FY2021, #21 in FY2022, #23 in FY2023, #10 in FY2024 and #4 in FY2025; up 1 since Aug 2024–Jul 2025.
5	Nebraska Game & Parks Commission Top agencies Army (Department of the Army)	$699,264	3.6%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; up 2 since Aug 2024–Jul 2025.
6	Asir LLC Top agencies DOI (Department of the Interior)	$479,321	2.5%	Rank history: #18 in FY2021, #18 in FY2022, #21 in FY2023, #18 in FY2024 and #5 in FY2025; up 10 since Aug 2024–Jul 2025.
7	Montana Dept. of Public Health Through Fish Wildlife & Parks Montana Department Top agencies Army (Department of the Army)	$419,387	2.2%	Rank history: #13 in FY2021, #14 in FY2022, #10 in FY2023, #13 in FY2024 and #8 in FY2025; new, not ranked in Aug 2024–Jul 2025.
8	Tunista Logistics Solutions LLC Top agencies USAF (Department of the Air Force)	$410,944	2.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
9	Florida Fish and Wildlife Conservation Commission Top agencies Army (Department of the Army)	$286,649	1.5%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and not on the FY2025 list; up 4 since Aug 2024–Jul 2025.
10	DB Ecological Services Inc. Top agencies Army (Department of the Army)	$248,732	1.3%	Rank history: #20 in FY2021, #22 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
11	Catherine Anne Schnurrenberger Top agencies DOI (Department of the Interior)	$248,350	1.3%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #18 in FY2025; up 10 since Aug 2024–Jul 2025.
12	Missouri Department of Conservation Top agencies Army (Department of the Army)	$247,568	1.3%	Rank history: not on the FY2021–FY2024 lists and #14 in FY2025; up 5 since Aug 2024–Jul 2025.
13	Swca Incorporated Top agencies DOI (Department of the Interior)	$245,237	1.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
14	Baron Public Affairs LLC Top agencies WHS (DOD Washington Headquarters Service)	$236,641	1.2%	Rank history: not on the FY2021–FY2024 lists and #7 in FY2025; down 6 since Aug 2024–Jul 2025.
15	The University of Central Florida Board of Trustees Top agencies Army (Department of the Army)	$230,911	1.2%	Rank history: not on the FY2021–FY2024 lists and #12 in FY2025; unchanged since Aug 2024–Jul 2025.
16	Marsh & Associates LLC Top agencies DOI (Department of the Interior)	$230,550	1.2%	Rank history: #12 in FY2021, #20 in FY2022, #22 in FY2023, #17 in FY2024 and #11 in FY2025; down 2 since Aug 2024–Jul 2025.
17	Improve Group, Inc. Top agencies USAF (Department of the Air Force)	$191,830	1.0%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; up 6 since Aug 2024–Jul 2025.
18	Awalix, LLC Top agencies Commerce (Department of Commerce)	$158,906	0.8%	Rank history: not on the FY2021–FY2023 lists, #27 in FY2024 and #23 in FY2025; up 8 since Aug 2024–Jul 2025.
19	Biophilia LLC Top agencies USDA (Department of Agriculture)	$114,000	0.6%	Rank history: #35 in FY2021, #25 in FY2022, #28 in FY2023, #29 in FY2024 and not on the FY2025 list; up 13 since Aug 2024–Jul 2025.
20	Earthology, LLC Top agencies Army (Department of the Army)	$102,245	0.5%	Rank history: not on the FY2021 list, #6 in FY2022, #6 in FY2023, #15 in FY2024 and #20 in FY2025; down 8 since Aug 2024–Jul 2025.
21	Portland State University Top agencies DOI (Department of the Interior)	$100,572	0.5%	Rank history: not on the FY2021–FY2023 lists, #20 in FY2024 and #16 in FY2025; down 2 since Aug 2024–Jul 2025.
22	Ivl, Institut FÜR Vegetationskunde UND Landschaftsökologie H. Schott UND Partner Landschaftsökologen Top agencies Army (Department of the Army)	$85,845	0.4%	Rank history: not on the FY2021–FY2022 lists, #20 in FY2023, #14 in FY2024 and #13 in FY2025; down 12 since Aug 2024–Jul 2025.
23	Michael Terry Top agencies USDA (Department of Agriculture)	$70,744	0.4%	Rank history: #40 in FY2021, not on the FY2022 list, #41 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
24	Haas Ecology, L.l.c Top agencies USDA (Department of Agriculture)	$65,869	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
25	Amanda ZAK Top agencies DOI (Department of the Interior)	$65,570	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Aug 2024–Jul 2025.
26	Smart-Sciences, Inc. Top agencies USAF (Department of the Air Force)	$59,800	0.3%	Rank history: #44 in FY2021, #43 in FY2022, #44 in FY2023, #39 in FY2024 and #30 in FY2025; new, not ranked in Aug 2024–Jul 2025.
27	Associated Scientists At Woods Hole, Inc. Top agencies Army (Department of the Army)	$53,720	0.3%	Rank history: #45 in FY2021, #46 in FY2022, #48 in FY2023, #41 in FY2024 and #32 in FY2025; up 12 since Aug 2024–Jul 2025.
28	Garrett M Keating Top agencies DOI (Department of the Interior)	$49,329	0.3%	Rank history: not on the FY2021–FY2024 lists and #24 in FY2025; unchanged since Aug 2024–Jul 2025.
29	Westwater Engineering, Inc. Top agencies DOI (Department of the Interior)	$48,688	0.3%	Rank history: #11 in FY2021, not on the FY2022 list, #31 in FY2023, #31 in FY2024 and #21 in FY2025; up 4 since Aug 2024–Jul 2025.
30	Pinyon Environmental Inc. Top agencies DOI (Department of the Interior)	$39,817	0.2%	Rank history: not on the FY2021–FY2023 lists, #40 in FY2024 and #28 in FY2025; new, not ranked in Aug 2024–Jul 2025.
31	Sagebrush Advisors, LLC Top agencies DOI (Department of the Interior)	$29,250	0.2%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and not on the FY2025 list; new, not ranked in Aug 2024–Jul 2025.
32	Incorporated Foundation Okinawa Prefecture Environment Science Center Top agencies Army (Department of the Army)	$26,430	0.1%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #35 in FY2025; up 12 since Aug 2024–Jul 2025.
33	Idea Consultants,Inc. Top agencies Army (Department of the Army)	$22,810	0.1%	Rank history: #43 in FY2021, #44 in FY2022, #45 in FY2023, #44 in FY2024 and #34 in FY2025; up 8 since Aug 2024–Jul 2025.
34	Pacific Rim Institute for Environmental Stewardship Top agencies Navy (Department of the Navy)	$21,247	0.1%	Rank history: #59 in FY2021, #32 in FY2022, #35 in FY2023, #36 in FY2024 and #26 in FY2025; unchanged since Aug 2024–Jul 2025.
35	MTM Environmental, LLC Top agencies DOI (Department of the Interior)	$14,950	0.1%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; new, not ranked in Aug 2024–Jul 2025.
36	Alicia Arcidiacono Top agencies DOI (Department of the Interior)	$9,411	<0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023, #56 in FY2024 and #36 in FY2025; up 9 since Aug 2024–Jul 2025.
37	Raedeke Associates, Inc. Top agencies USDA (Department of Agriculture)	$7,175	<0.1%	Rank history: not on the FY2021–FY2023 lists, #55 in FY2024 and #39 in FY2025; up 10 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 $19.3 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