Company lists · Data refreshed September 2026

Top 25 Regulatory compliance consulting firms based in the United States

Name: Regulatory compliance consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 3,030 companies tracked

RevenueBase identified 3,030 regulatory compliance consulting firms headquartered in the United States as of September 2026 and tracks 26,840 professional contacts across them, including 10,974 with verified work emails and 10,828 with mobile numbers. New York is the largest hub.

This list covers regulatory compliance consulting firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

3,030Companies

26,840Contacts tracked

10,974Verified emails

10,828Mobile numbers

Explore all 3,030 companies → Free signup · no credit card · 500 free credits

The 25 largest regulatory compliance consulting firms based in the United States

Ranked by team size

Top 25 of 3,030 regulatory compliance consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names regulatory compliance consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	ACA GroupPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,486
	“ACA Group is the leading governance, risk, and compliance advisor to the financial services industry.” Source: company website · checked Sep 5, 2026
2	CT CorporationPartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	1,001-5,000	788
	“CT Corporation helps small businesses, corporations, and law firms around the world manage their most critical business and legal compliance responsibilities.” Source: company website · checked Sep 5, 2026
3	SolomonedwardsIndirect evidence	Wayne, PA, United StatesHQ checked Sep 5, 2026	1,001-5,000	557
	“For more than 25 years, SolomonEdwards has empowered organizations to tackle common and complex business challenges through strategic advisory, technical advocacy, and hands-on…” Source: company website · checked Sep 5, 2026
4	EnhesaPartial evidence	Arlington, VA, United StatesHQ checked Sep 5, 2026	201-500	474
	“At Enhesa we empower the world’s largest businesses to achieve compliance, manage risk, and drive sustainability with clear, actionable insights.” Source: company website · checked Sep 5, 2026
5	Aithent INCStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	416
	“Aithent creates high-value regulatory compliance management solutions for financial services, government, healthcare and insurance organizations around the globe.” Source: company website · checked Sep 5, 2026
6	ControlcasePartial evidence	Fairfax, VA, United StatesHQ checked Sep 5, 2026	201-500	411
	“ControlCase is committed to bringing peace of mind to the world’s IT compliance programs through our signature partnership approach, commitment to automation, and cost-effective…” Source: company website · checked Sep 5, 2026
7	IBM PromontoryStrong evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	501-1,000	403
	“IBM Promontory is a global leader in strategy, risk management, and compliance consulting.#IBMConsulting” Source: company website · checked Sep 5, 2026
8	APA Engineering INCPartial evidence	Mount Laurel, NJ, United StatesHQ checked Sep 5, 2026	201-500	364
	“APA Engineering Inc has been a leader in providing Compliance, Engineering, IT, and Sourcing services since With over twenty years in business, we are dedicated to providing the…” Source: company website · checked Sep 5, 2026
9	Protect LLCPartial evidence	Wichita, KS, United StatesHQ checked Sep 5, 2026	501-1,000	332
	“PROtect is a leading national provider of reliability, risk, and compliance services to the refining, petrochemical, renewable fuels, manufacturing, food & beverage, fertilizer…” Source: company website · checked Sep 5, 2026
10	Registrar CorpStrong evidence	Hampton, VA, United StatesHQ checked Sep 5, 2026	51-200	317
	“Registrar Corp is your trusted partner helping you navigate global regulatory requirements with expert services, innovative software solutions and comprehensive online compliance…” Source: company website · checked Sep 5, 2026
11	ComplyPartial evidence	New York City, NY, United StatesHQ checked Sep 5, 2026	201-500	308
	“At Comply, we pride ourselves on being the champion for compliance professionals.” Source: company website · checked Sep 5, 2026
12	MCO MycomplianceofficePartial evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	295
	“MCO is a global leader on a mission to revolutionize how financial firms tackle compliance, making it simpler, smarter, and more effective.” Source: company website · checked Sep 5, 2026
13	VaisesikaStrong evidence	Carlsbad, CA, United StatesHQ checked Sep 5, 2026	201-500	266
	“Vaisesika Consulting is a global tech and consulting firm that helps businesses transform their digital setups and stay compliant in a straightforward way.” Source: company website · checked Sep 5, 2026
14	Valsource INCIndirect evidence	Downingtown, PA, United StatesHQ checked Sep 5, 2026	201-500	245
	“Since 1996, ValSource has worked with hundreds of pharmaceutical, biopharma, and medical device organizations around the world.” Source: company website · checked Sep 5, 2026
15	Burwood GroupIndirect evidence	Oak Brook, IL, United StatesHQ checked Sep 5, 2026	201-500	223
	“The urgent need for technology to solve business problems more efficiently, decrease costs, and mitigate risk has increased.” Source: company website · checked Sep 5, 2026
16	Mindpoint Group, A Quantum SKY CompanyIndirect evidence	Reston, VA, United StatesHQ checked Sep 5, 2026	1,001-5,000	204
	“MindPoint Group, a Quantum Sky company, is a cybersecurity specialist trusted by U.S.” Source: company website · checked Sep 5, 2026
17	Complyright, INCIndirect evidence	Pompano Beach, FL, United StatesHQ checked Sep 5, 2026	201-500	190
	“At ComplyRight®, our mission is to empower employers by simplifying the complex world of employment law.” Source: company website · checked Sep 5, 2026
18	Lachman Consultant ServicesStrong evidence	Westbury, NY, United StatesHQ checked Sep 5, 2026	51-200	179
	“Quality & Compliance \| Regulatory Strategy \| Inspection Readiness & Remediation \| Data Integrity.” Source: company website · checked Sep 5, 2026
19	Harbor CompliancePartial evidence	Lancaster, PA, United StatesHQ checked Sep 5, 2026	201-500	150
	“We provide innovative compliance solutions by embracing complexity and making it simple.” Source: company website · checked Sep 5, 2026
20	Optima PartnersStrong evidence	NY, United StatesHQ checked Sep 5, 2026	51-200	145
	“Established in 2014, Optima is a leading global regulatory compliance and cybersecurity consulting firm advising financial institutions, including investment managers, hedge…” Source: company website · checked Sep 5, 2026
21	Soho Square SolutionsStrong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	142
	“Experts on financial regulatory & compliance, business analysis, project Implementation and delivery for Corporate and Investment Banking, Asset management clients Firm…” Source: company website · checked Sep 5, 2026
22	Trendsource, INCPartial evidence	San Diego, CA, United StatesHQ checked Sep 5, 2026	11-50	141
	“TrendSource helps businesses document and measure compliance across employment, consumer reporting, government, finance, health care, and retail.” Source: company website · checked Sep 5, 2026
23	HCPROIndirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	201-500	136
	“HCPro, LLC.” Source: company website · checked Sep 5, 2026
24	Charles ITPartial evidence	Middletown, CT, United StatesHQ checked Sep 5, 2026	51-200	132
	“Charles IT is the Northeast's compliance expert.” Source: company website · checked Sep 5, 2026
25	Risk & Regulatory Consulting LLCStrong evidence	Farmington, CT, United StatesHQ checked Sep 5, 2026	51-200	122
	“Risk & Regulatory Consulting, LLC is a leading, national professional services firm dedicated to providing exceptional consulting services to insurance regulators.” Source: company website · checked Sep 5, 2026

Showing 25 of 3,030 regulatory compliance consulting firms based in the United States

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Regulatory compliance consulting firms based in the United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

New YorkLargest hub · 137 HQs

10,828Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

2,119

11-50

701

51-200

157

201-500

501-1,000

1,001-5,000

5,001-10,000

Verified emails by last verification

0–30

10,264

31–60

656

61–90

90–180

180+

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among regulatory compliance consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “regulatory compliance consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among regulatory compliance consulting firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 10,974 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Regulatory compliance consulting firms by metro

Frequently asked

How many regulatory compliance consulting firms are there based in the United States?

RevenueBase identified 3,030 regulatory compliance consulting firms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

ACA Group, headquartered in New York, tops this list with the largest team on record.

Which city has the most regulatory compliance consulting firms?

New York leads with 137 headquartered companies, followed by Houston (70) and Washington (64).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 10,974 verified decision-maker contacts tracked across these 3,030 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.