Company lists · Data refreshed September 2026

Top 25 Compliance and regulatory law firms based in the United States

RevenueBase identified 3,276 compliance and regulatory law firms headquartered in the United States as of September 2026 and tracks 92,358 professional contacts across them, including 53,291 with verified work emails. New York is the largest hub.

This list covers compliance and regulatory law 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 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 27, 2026 86% judged on-target in blind review
3,276Companies
92,358Contacts tracked
53,291Verified emails
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The 25 largest compliance and regulatory law firms based in the United States

Ranked by team size
Top 25 of 3,276 compliance and regulatory law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to compliance and regulatory law firms: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidencePalo Alto, CA, United StatesHQ checked Sep 27, 20261,001-5,0003,341 contacts →

Partial evidence

“Clients partner with Cooley on transformative deals, complex IP and regulatory matters, and high-stakes litigation.”

Source: RevenueBase Database · checked Sep 27, 2026
2Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 20261,001-5,0002,667 contacts →

Indirect evidence

“Morrison Foerster transforms complexity into advantage.”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceWashington, DC, United StatesHQ checked Sep 27, 20261,001-5,0002,333 contacts →

Partial evidence

“Arnold & Porter combines sophisticated regulatory, litigation, and transactional capabilities to resolve clients’ most complex issues.”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceChicago, IL, United StatesHQ checked Sep 27, 20261,001-5,0002,167 contacts →

Indirect evidence

“High stakes.”

Source: RevenueBase Database · checked Sep 27, 2026
5Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 27, 20261,001-5,0002,041 contacts →

Partial evidence

“Dechert is the law firm that helps business leaders lead.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceColumbia, SC, United StatesHQ checked Sep 27, 20261,001-5,0002,012 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 27, 2026
7Indirect evidenceCincinnati, OH, United StatesHQ checked Sep 27, 20261,001-5,0001,980 contacts →

Indirect evidence

“At Taft, we work as one team, driven and committed to helping you succeed.”

Source: RevenueBase Database · checked Sep 27, 2026
8Partial evidenceNew York, NY, United StatesHQ checked Sep 27, 20261,001-5,0001,949 contacts →

Partial evidence

“Pillsbury is one of the world’s foremost law firms, operating at the intersection of technology innovation, capital and government.”

Source: RevenueBase Database · checked Sep 27, 2026
9Indirect evidencePhiladelphia, PA, United StatesHQ checked Sep 27, 20261,001-5,0001,848 contacts →

Indirect evidence

“Faegre Drinker is a firm designed for clients.”

Source: RevenueBase Database · checked Sep 27, 2026
10Strong evidenceWashington, DC, United StatesHQ checked Sep 27, 20261,001-5,0001,790 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 27, 2026
11Partial evidencePhiladelphia, PA, United StatesHQ checked Sep 27, 20261,001-5,0001,682 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 27, 2026
12Partial evidenceWashington, DC, United StatesHQ checked Sep 27, 20261,001-5,0001,602 contacts →

Partial evidence

“Crowell & Moring is an international law firm with operations in the United States, Europe, MENA, and Asia.”

Source: RevenueBase Database · checked Sep 27, 2026
13Indirect evidenceAtlanta, GA, United StatesHQ checked Sep 27, 2026501-1,0001,471 contacts →

Indirect evidence

“With hundreds of attorneys across the globe, Fisher Phillips advises and advocates for employers internationally on some of the most complex and high-profile workplace matters.”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceDetroit, MI, United StatesHQ checked Sep 27, 20261,001-5,0001,343 contacts →

Indirect evidence

“At Clark Hill, our value proposition is simple.”

Source: RevenueBase Database · checked Sep 27, 2026
15Strong evidencePittsburgh, PA, United StatesHQ checked Sep 27, 2026501-1,0001,197 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 27, 2026
16Indirect evidenceChicago, IL, United StatesHQ checked Sep 27, 2026501-1,0001,194 contacts →

Indirect evidence

“At Jenner & Block, we shape what’s next through experience, vision, and judgment.”

Source: RevenueBase Database · checked Sep 27, 2026
17Partial evidenceChicago, IL, United StatesHQ checked Sep 27, 2026501-1,0001,188 contacts →

Partial evidence

“Hinshaw & Culbertson LLP is a U.S-based law firm with offices nationwide.”

Source: RevenueBase Database · checked Sep 27, 2026
18Indirect evidence500 Attorneys. 17 Locations Nationwide., MN, United StatesHQ checked Sep 27, 2026501-1,0001,167 contacts →

Indirect evidence

“Stinson LLP collaborates with clients ranging from individuals and privately held enterprises to national companies and international public corporations.”

Source: RevenueBase Database · checked Sep 27, 2026
19Indirect evidenceDetroit, MI, United StatesHQ checked Sep 27, 2026501-1,0001,022 contacts →

Indirect evidence

“Dickinson Wright is a growing, full-service firm of experienced, creative, diverse and dedicated legal professionals.”

Source: RevenueBase Database · checked Sep 27, 2026
20Partial evidenceHouston, TX, United StatesHQ checked Sep 27, 2026501-1,000933 contacts →

Partial evidence

“Bracewell LLP is a leading law and government relations firm.”

Source: RevenueBase Database · checked Sep 27, 2026
21Indirect evidencePhiladelphia, PA, United StatesHQ checked Sep 27, 2026501-1,000916 contacts →

Indirect evidence

“Inspired People.”

Source: RevenueBase Database · checked Sep 27, 2026
22Partial evidenceDenver, CO, United StatesHQ checked Sep 27, 2026501-1,000902 contacts →

Partial evidence

“For decades, we’ve positioned ourselves at the intersection of law, business and policy to bring a multidisciplinary strategy to every issue.”

Source: RevenueBase Database · checked Sep 27, 2026
23Partial evidenceMinneapolis, MN, United StatesHQ checked Sep 27, 2026501-1,000834 contacts →

Partial evidence

“At Fredrikson, we’ve built a reputation as the firm “where law and business meet” by bringing business acumen and entrepreneurial thinking to our work with clients, and by…”

Source: RevenueBase Database · checked Sep 27, 2026
24Partial evidenceAtlanta, GA, United StatesHQ checked Sep 27, 2026501-1,000815 contacts →

Partial evidence

“Established in 1989, Hall Booth Smith, P.C.(HBS) is a full-service law firm with 33 offices across the United States.”

Source: RevenueBase Database · checked Sep 27, 2026
25Indirect evidenceTampa, FL, United StatesHQ checked Sep 27, 2026501-1,000790 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 27, 2026

Showing 25 of 3,276 compliance and regulatory law firms based in the United States

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Compliance and regulatory law firms based in the United States at a glance

As of Sep 27, 2026
57.7%Verified-email coverage
28.2Average contacts per company
1-10Median size (employees)
6.2%Largest-city concentration · New York
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
2,168
11-50
796
51-200
221
201-500
43
501-1,000
24
1,001-5,000
16
5,001-10,000
1

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 3,276 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 compliance and regulatory law firms, 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 “compliance and regulatory law firms”. 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 compliance and regulatory law firms), 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 compliance and regulatory law 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 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, 53,291 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 27, 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.

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 compliance and regulatory law firms, 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 compliance and regulatory law firms are there based in the United States?

RevenueBase identified 3,276 compliance and regulatory law 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?

Cooley LLP, headquartered in Palo Alto, tops this list with the largest team on record.

Which city has the most compliance and regulatory law firms?

New York leads with 204 headquartered companies, followed by Washington (204) and Chicago (78).

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 53,291 verified decision-maker contacts tracked across these 3,276 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 27, 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.