Top 31 Contractors in PSC B528: Regulatory Studies, FY2023

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	ICF International, Inc. Through ICF Incorporated, L.L.C. Top agencies EPA (Environmental Protection Agency)	$7,553,115	20.8%	Rank history: #1 in FY2021, #1 in FY2022 and #3 in FY2024; unchanged since FY2022.
2	Deloitte LLP Through Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services)	$4,299,290	11.8%	Rank history: #2 in FY2021, #2 in FY2022 and not on the FY2024 list; unchanged since FY2022.
3	Lewis & Ellis Inc. Top agencies HHS (Department of Health and Human Services)	$3,458,787	9.5%	Rank history: not on the FY2021–FY2022 lists and #2 in FY2024; new.
4	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$2,997,805	8.2%	Rank history: #29 in FY2021, #6 in FY2022 and #17 in FY2024; up 2 since FY2022.
5	Deloitte Consulting LLP Top agencies HHS (Department of Health and Human Services)	$1,675,927	4.6%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024 list; new.
6	Korn / Ferry International Through Sensa Solutions, Inc. Top agencies HHS (Department of Health and Human Services)	$1,496,089	4.1%	Rank history: #7 in FY2021, #9 in FY2022 and not on the FY2024 list; up 3 since FY2022.
7	Bluestone Logic LLC Top agencies DISA (Defense Information Systems Agency)	$1,397,946	3.8%	Rank history: #16 in FY2021, #7 in FY2022 and #4 in FY2024; unchanged since FY2022.
8	Defined Business Solutions LLC Top agencies DMEA (Defense Microelectronics Activity)	$1,161,046	3.2%	Rank history: not on the FY2021 list, #11 in FY2022 and #6 in FY2024; up 3 since FY2022.
9	Richard H Sweetman IV Top agencies HHS (Department of Health and Human Services)	$1,110,803	3.1%	Rank history: #9 in FY2021, #12 in FY2022 and #7 in FY2024; up 3 since FY2022.
10	Susquehanna Actuarial Consulting, Inc. Top agencies HHS (Department of Health and Human Services)	$1,081,559	3.0%	Rank history: #10 in FY2021, #14 in FY2022 and #8 in FY2024; up 4 since FY2022.
11	Bolton Health Actuarial, Inc. Top agencies HHS (Department of Health and Human Services)	$1,078,520	3.0%	Rank history: not on the FY2021 list, #13 in FY2022 and #9 in FY2024; up 2 since FY2022.
12	Actuarial Research Corporation Top agencies HHS (Department of Health and Human Services)	$913,053	2.5%	Rank history: #11 in FY2021, #15 in FY2022 and #12 in FY2024; up 3 since FY2022.
13	Industrial Economics Inc. Top agencies DHS (Department of Homeland Security) EPA (Environmental Protection Agency)	$907,356	2.5%	Rank history: not on the FY2021 list, #18 in FY2022 and #11 in FY2024; up 5 since FY2022.
14	R & K Enterprise Solutions Inc. Top agencies DHS (Department of Homeland Security)	$874,760	2.4%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024 list; new.
15	S C & A Inc. Top agencies EPA (Environmental Protection Agency)	$846,039	2.3%	Rank history: #13 in FY2021, #16 in FY2022 and #10 in FY2024; up 1 since FY2022.
16	Novarest Inc. Top agencies HHS (Department of Health and Human Services)	$572,240	1.6%	Rank history: not on the FY2021–FY2022 lists and #14 in FY2024; new.
17	EGJ Health Consulting LLC Top agencies HHS (Department of Health and Human Services)	$532,098	1.5%	Rank history: not on the FY2021–FY2022 lists and #15 in FY2024; new.
18	Exponent Inc. Top agencies CPSC (Consumer Product Safety Commission)	$459,250	1.3%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024 list; new.
19	Harkcon Inc. Top agencies DHS (Department of Homeland Security)	$400,131	1.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024 list; new.
20	Specpro Sustainment and Environmental, LLC Top agencies Navy (Department of the Navy)	$364,573	1.0%	Rank history: not on the FY2021 list, #19 in FY2022 and #16 in FY2024; down 1 since FY2022.
21	Diane Skipworth Top agencies DHS (Department of Homeland Security)	$286,250	0.8%	Rank history: #17 in FY2021, #20 in FY2022 and #23 in FY2024; down 1 since FY2022.
22	Biopharma Services USA Top agencies HHS (Department of Health and Human Services)	$279,056	0.8%	Rank history: not on the FY2021 list, #27 in FY2022 and not on the FY2024 list; up 5 since FY2022.
23	Eastern Research Group Inc. Top agencies EPA (Environmental Protection Agency)	$226,735	0.6%	Rank history: #6 in FY2021, #5 in FY2022 and not on the FY2024 list; down 18 since FY2022.
24	Endyna, Inc. Top agencies EPA (Environmental Protection Agency)	$188,665	0.5%	Rank history: #18 in FY2021, #22 in FY2022 and #25 in FY2024; down 2 since FY2022.
25	International Research Ethics Consultation - Innehaver Reidar Lie Top agencies HHS (Department of Health and Human Services)	$150,000	0.4%	Rank history: not on the FY2021–FY2022 lists and #18 in FY2024; new.
26	Safety Management Services Inc. Top agencies Army (Department of the Army)	$110,510	0.3%	Rank history: #22 in FY2021, #23 in FY2022 and not on the FY2024 list; down 3 since FY2022.
27	AECOM Through AECOM Italia S.P.A. Top agencies Army (Department of the Army)	$77,323	0.2%	Rank history: not on the FY2021 list, #28 in FY2022 and not on the FY2024 list; up 1 since FY2022.
28	American National Standards Institute Incorporated Top agencies HHS (Department of Health and Human Services)	$25,000	0.1%	Rank history: not on the FY2021 list, #29 in FY2022 and #21 in FY2024; up 1 since FY2022.
29	Horsley Witten Group, Inc. Top agencies EPA (Environmental Protection Agency)	$13,148	<0.1%	Rank history: #25 in FY2021, #21 in FY2022 and not on the FY2024 list; down 8 since FY2022.
30	Eurofins EAG Agroscience LLC Through Eurofins EAG Materials Science LLC Top agencies Navy (Department of the Navy)	$4,970	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024 list; new.
31	Dalhousie University Top agencies Navy (Department of the Navy)	$2,755	<0.1%	Rank history: not on the FY2021–FY2022 lists and not on the FY2024 list; 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 $36.4 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.
• Fiscal year 2023 ran Oct 1, 2022 – Sep 30, 2023. 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 FY2022. "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 FY2022 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.

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