Company lists · Data refreshed September 2026

Top 25 Law firm regulatory compliance companies based in the United States

Name: Law firm regulatory compliance companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 1,788 companies tracked

RevenueBase identified 1,788 law firm regulatory compliance companies headquartered in the United States as of September 2026 and tracks 39,144 professional contacts across them, including 19,825 with verified work emails. New York is the largest hub.

This list covers law firm regulatory compliance companies 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

1,788Companies

39,144Contacts tracked

19,825Verified emails

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The 25 largest law firm regulatory compliance companies based in the United States

Ranked by team size

Top 25 of 1,788 law firm regulatory compliance companies based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to law firm regulatory compliance companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Arnold & Porter	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,333 contacts →
	Partial evidence “Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.” Source: RevenueBase Database · checked Sep 21, 2026
2	Nelson Mullins Riley & Scarborough	Partial evidence	Columbia, SC, United StatesHQ checked Sep 21, 2026	1,001-5,000	2,012 contacts →
	Partial evidence “Established in 1897, Nelson Mullins is an Am Law 100 firm of more than attorneys, policy advisors and professionals with 33 offices in 17 states and Washington, D.C.” Source: RevenueBase Database · checked Sep 21, 2026
3	Venable LLP	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,790 contacts →
	Strong evidence “Committed to Your Success – As a law firm of more than 900 professionals, Venable delivers legal services globally in every area of regulatory compliance, government affairs…” Source: RevenueBase Database · checked Sep 21, 2026
4	Donnelley Financial Solutions Dfin	Strong evidence	Lancaster, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,740 contacts →
	Strong evidence “DFIN is the leading global provider of compliance and regulatory software and services, fueling end-to-end investment company regulatory compliance needs, complex capital markets…” Source: RevenueBase Database · checked Sep 21, 2026
5	Ballard Spahr LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,682 contacts →
	Partial evidence “Ballard Spahr LLP, an Am Law 100 law firm with more than 750 lawyers in 19 U.S.” Source: RevenueBase Database · checked Sep 21, 2026
6	Clark Hill LAW	Indirect evidence	Detroit, MI, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,343 contacts →
	Indirect evidence “At Clark Hill, our value proposition is simple.” Source: RevenueBase Database · checked Sep 21, 2026
7	Buchanan Ingersoll & Rooney PC	Strong evidence	Pittsburgh, PA, United StatesHQ checked Sep 21, 2026	501-1,000	1,197 contacts →
	Strong evidence “Buchanan Ingersoll & Rooney is a national law firm with a proven reputation for providing progressive, industry-leading legal, business, regulatory and government relations advice…” Source: RevenueBase Database · checked Sep 21, 2026
8	Hinshaw & Culbertson LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	501-1,000	1,188 contacts →
	Partial evidence “Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.” Source: RevenueBase Database · checked Sep 21, 2026
9	Quintairos, Prieto, Wood & Boyer, P.A	Partial evidence	Miami, FL, United StatesHQ checked Sep 21, 2026	1,001-5,000	1,068 contacts →
	Partial evidence “Over the past 25 years, QPWB is one of the fastest-growing law firms in the US.” Source: RevenueBase Database · checked Sep 21, 2026
10	Carlton Fields	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 21, 2026	501-1,000	790 contacts →
	Indirect evidence “We view the world from our clients’ perspectives, helping them to lead and innovate across industries and around the globe.” Source: RevenueBase Database · checked Sep 21, 2026
11	CT Corporation	Strong evidence	New York, NY, United StatesHQ checked Sep 21, 2026	1,001-5,000	788 contacts →
	Strong evidence “CT Corporation helps small businesses, corporations, and law firms around the world manage their most critical business and legal compliance responsibilities.” Source: RevenueBase Database · checked Sep 21, 2026
12	Weltman, Weinberg & Reis Co., LPA	Partial evidence	Cleveland, OH, United StatesHQ checked Sep 21, 2026	501-1,000	706 contacts →
	Partial evidence “With over 95 years of experience, Weltman, Weinberg & Reis Co, LPA is a nationally-recognized full-service creditors’ rights law firm.” Source: RevenueBase Database · checked Sep 21, 2026
13	Kelley Drye & Warren LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 21, 2026	501-1,000	690 contacts →
	Partial evidence “Kelley Drye is an AmLaw 200 law firm of more than 350 lawyers and other professionals practicing in New York, NY; Washington, D.C; Chicago, IL; Houston, TX, Los Angeles, CA; San…” Source: RevenueBase Database · checked Sep 21, 2026
14	Grayrobinson, P.A	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 21, 2026	501-1,000	672 contacts →
	Indirect evidence “GrayRobinson is a multidimensional team of attorneys, advisors, and consultants recognized as one of the most influential firms in Florida.” Source: RevenueBase Database · checked Sep 21, 2026
15	Wiley Rein LLP	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	501-1,000	576 contacts →
	Indirect evidence “Founded in 1983, Wiley is a dominant presence in the nation’s capital.” Source: RevenueBase Database · checked Sep 21, 2026
16	Stites & Harbison, Pllc	Partial evidence	Louisville, KY, United StatesHQ checked Sep 21, 2026	201-500	426 contacts →
	Partial evidence “A full-service law firm representing clients across the United States and internationally, Stites & Harbison, PLLC is known as a preeminent firm managing sophisticated…” Source: RevenueBase Database · checked Sep 21, 2026
17	Stevens & LEE	Indirect evidence	Reading, PA, United StatesHQ checked Sep 21, 2026	201-500	354 contacts →
	Indirect evidence “Stevens & Lee is the cornerstone of The Stevens & Lee Companies, a platform of affiliated professional service firms which provides a full range of legal, investment banking…” Source: RevenueBase Database · checked Sep 21, 2026
18	Post & Schell, P.C	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 21, 2026	201-500	336 contacts →
	Indirect evidence “For over 50 years, Post & Schell’s attorneys have combined the operational knowledge and insight into the industries they represent with creative legal solutions – and helped…” Source: RevenueBase Database · checked Sep 21, 2026
19	Comply	Partial evidence	New York City, NY, United StatesHQ checked Sep 21, 2026	201-500	308 contacts →
	Partial evidence “At Comply, we pride ourselves on being the champion for compliance professionals.” Source: RevenueBase Database · checked Sep 21, 2026
20	Mcnees Wallace & Nurick	Partial evidence	Harrisburg, PA, United StatesHQ checked Sep 21, 2026	201-500	307 contacts →
	Partial evidence “Since 1935, McNees Wallace & Nurick has been a trusted, client-focused law firm delivering practical, results-driven legal solutions to businesses, individuals, and organizations.” Source: RevenueBase Database · checked Sep 21, 2026
21	Howard & Howard Attorneys Pllc	Partial evidence	Royal Oak, MI, United StatesHQ checked Sep 21, 2026	201-500	307 contacts →
	Partial evidence “From our founding above a blacksmith shop in 1869 to the full-service law practice we’ve become in the 156 years since, we have consistently sought to earn each client’s trust by…” Source: RevenueBase Database · checked Sep 21, 2026
22	Stroock & Stroock & Lavan LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	501-1,000	299 contacts →
	Indirect evidence “With more than 500 legal and business professionals across the US, Stroock is a national firm with international reach.” Source: RevenueBase Database · checked Sep 21, 2026
23	Maynard Nexsen	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 21, 2026	501-1,000	295 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
24	Messerli Kramer, P.A	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 21, 2026	201-500	281 contacts →
	Partial evidence “WHO WE ARE At Messerli Kramer, we’ve spent 60 years building a reputation as a firm of “attorneys and advisors” – or, as we like to say, a place where the law isn’t always the…” Source: RevenueBase Database · checked Sep 21, 2026
25	ALAW	Partial evidence	Tampa, FL, United StatesHQ checked Sep 21, 2026	501-1,000	241 contacts →
	Partial evidence “ALAW is a national law firm delivering smart, strategic legal solutions to financial institutions across the U.S.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: law firm regulatory compliance companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names law firm regulatory compliance companies.
Partial evidence: Its own public description names part of law firm regulatory compliance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name law firm regulatory compliance companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,788 law firm regulatory compliance companies based in the United States

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Law firm regulatory compliance companies based in the United States at a glance

As of Sep 21, 2026

50.6%Verified-email coverage

21.9Average contacts per company

1-10Median size (employees)

7.6%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

1,219

11-50

434

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,788 companies.

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 law firm regulatory compliance companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, 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 “law firm regulatory compliance companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names law firm regulatory compliance companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among law firm regulatory compliance companies, 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 its RevenueBase Smart Search 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, 19,825 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 21, 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.

Law firm regulatory compliance companies by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names law firm regulatory compliance companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many law firm regulatory compliance companies are there based in the United States?

RevenueBase identified 1,788 law firm regulatory compliance companies 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?

Arnold & Porter, headquartered in Washington, tops this list with the largest team on record.

Which city has the most law firm regulatory compliance companies?

New York leads with 135 headquartered companies, followed by Washington (108) and Miami (48).

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 19,825 verified decision-maker contacts tracked across these 1,788 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 21, 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 Smart Search, 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.