Company lists · Data refreshed September 2026

Top 25 Regulatory law firms based in Boston, United States

Name: Regulatory law firms based in Boston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 122 companies tracked

RevenueBase identified 122 regulatory law firms headquartered in Boston, United States as of September 2026 and tracks 9,172 professional contacts across them, including 5,696 with verified work emails. Across the United States, New York is the largest hub for this category (423 companies); Boston has 122.

This list covers regulatory law firms headquartered in Boston, 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 29, 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 29, 2026 86% judged on-target in blind review

122Companies

9,172Contacts tracked

5,696Verified emails

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The 25 largest regulatory law firms based in Boston, United States

Ranked by team size

Top 25 of 122 regulatory law firms based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Goodwin	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	5,001-10,000	3,582 contacts →
	Indirect evidence “At Goodwin, we live your business.” Source: RevenueBase Database · checked Sep 29, 2026
2	MINTZ	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,326 contacts →
	Partial evidence “Mintz is a full-service law firm serving clients in the life sciences, energy, private equity, and technology industries.” Source: RevenueBase Database · checked Sep 29, 2026
3	Foley Hoag LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	501-1,000	787 contacts →
	Partial evidence “Foley Hoag is an award-winning, mid-sized, international law firm that focuses on innovative industries and high-stakes litigation.” Source: RevenueBase Database · checked Sep 29, 2026
4	Bingham Mccutchen LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	1,001-5,000	575 contacts →
	Indirect evidence “Paul, Weiss, Rifkind, Wharton & Garrison LLP is a firm of about lawyers with diverse backgrounds, personalities, ideas and interests who provide innovative and effective solutions…” Source: RevenueBase Database · checked Sep 29, 2026
5	MG M The LAW Firm	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	201-500	514 contacts →
	Indirect evidence “MG+M is a national litigation firm with deep expertise in a wide range of practice areas.” Source: RevenueBase Database · checked Sep 29, 2026
6	Morrison Mahoney LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	201-500	398 contacts →
	Indirect evidence “For 75 years, Morrison Mahoney LLP has been committed to servicing its clients' needs and working with its clients to achieve desired goals and objectives.” Source: RevenueBase Database · checked Sep 29, 2026
7	Verrill	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	201-500	286 contacts →
	Indirect evidence “Decency, honesty, and judgment.” Source: RevenueBase Database · checked Sep 29, 2026
8	Edwards Wildman Palmer LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	1,001-5,000	154 contacts →
	Indirect evidence “On January 10, 2015, Locke Lord LLP and Edward Wildman Palmer LLP combined to create Locke Lord Edwards, a Firm of approximately lawyers working from 23 offices to meet clients’…” Source: RevenueBase Database · checked Sep 29, 2026
9	Opus Regulatory INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	113 contacts →
	Partial evidence “Opus Regulatory is a niche consulting firm headquartered in the Seaport district of Boston.” Source: RevenueBase Database · checked Sep 29, 2026
10	Cetrulo LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	100 contacts →
	Indirect evidence “For over 25 years, our dedicated attorneys have been setting the standard for exceptional representation in liability defense litigation.” Source: RevenueBase Database · checked Sep 29, 2026
11	Peabody & Arnold LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	90 contacts →
	Indirect evidence “Firm Overview At Peabody & Arnold, our attorneys handle complex and often highly sensitive matters, and have particular expertise in civil litigation and insurance services.” Source: RevenueBase Database · checked Sep 29, 2026
12	Campbell Conroy & O'neil, P.C	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	83 contacts →
	Indirect evidence “Recognized both nationally and internationally for delivering results on high stakes, complex litigation throughout the United States, Campbell Conroy & O’Neil, P.C.” Source: RevenueBase Database · checked Sep 29, 2026
13	Conn Kavanaugh	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	82 contacts →
	Partial evidence “Conn Kavanaugh is a Boston-based law firm representing individuals, families, and organizations, from Fortune 100 companies to closely held, family businesses and everything in…” Source: RevenueBase Database · checked Sep 29, 2026
14	Lawson & Weitzen, LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	73 contacts →
	Indirect evidence “Since 1973, our full-service firm has identified opportunities, surmounted challenges, and optimized results for our clients at reasonable rates.” Source: RevenueBase Database · checked Sep 29, 2026
15	Ruberto, Israel & Weiner, P.C	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	11-50	66 contacts →
	Partial evidence “Ruberto, Israel & Weiner is a well established business law firm based in Boston, providing legal services to a diverse client base throughout the region, across the U.S.” Source: RevenueBase Database · checked Sep 29, 2026
16	Davis Malm	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	63 contacts →
	Indirect evidence “We want to get to know you.” Source: RevenueBase Database · checked Sep 29, 2026
17	Rich May, P.C	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	11-50	53 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026
18	Smith Duggan Cornell & Gollub LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	11-50	53 contacts →
	Indirect evidence “Smith Duggan Cornell & Gollub LLP provides effective, innovative and timely legal advice to businesses, organizations, individuals and public entities in New England and across…” Source: RevenueBase Database · checked Sep 29, 2026
19	Fitch LAW Partners LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	11-50	46 contacts →
	Partial evidence “Fitch Law Partners LLP is a litigation law firm distinguished by its preeminent lawyers and the successful results it has achieved for its sophisticated group of clients in…” Source: RevenueBase Database · checked Sep 29, 2026
20	Adler Cohen Harvey Wakeman & Guekguezian, LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	11-50	44 contacts →
	Indirect evidence “For more than twenty-five years, Adler, Cohen, Harvey, Wakeman & Guekguezian has consistently delivered successful results defending our clients in civil litigation and licensing…” Source: RevenueBase Database · checked Sep 29, 2026
21	Donovan Hatem LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	39 contacts →
	Partial evidence “Donovan Hatem LLP is a multi-practice law firm comprised of more than 35 litigation and general business attorneys serving a diverse clientele of public and private companies…” Source: RevenueBase Database · checked Sep 29, 2026
22	Hirsch Roberts Weinstein LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	11-50	36 contacts →
	Partial evidence “HRW’s team of experienced attorneys helps employers remain in compliance with the law and avoid or resolve every manner of workplace dispute.” Source: RevenueBase Database · checked Sep 29, 2026
23	D'ambrosio LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	11-50	30 contacts →
	Partial evidence “DLLP is a full-service law firm dedicated to offering the highest level of strategic counsel.” Source: RevenueBase Database · checked Sep 29, 2026
24	Mckenzie & Associates, P.C	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	1-10	30 contacts →
	Indirect evidence “Since 1984, McKenzie & Associates, P.C.” Source: RevenueBase Database · checked Sep 29, 2026
25	Murphy & King, Professional Corporation	Indirect evidence	Boston, MA, United StatesHQ checked Sep 29, 2026	51-200	29 contacts →
	Indirect evidence “Unraveling Complexity A business is a complex entity.” Source: RevenueBase Database · checked Sep 29, 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: regulatory law firms. 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 regulatory law firms.
Partial evidence: Its own public description names part of regulatory law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name regulatory law firms. 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 122 regulatory law firms based in Boston, United States

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Regulatory law firms based in Boston, United States at a glance

As of Sep 29, 2026

62.1%Verified-email coverage

75.2Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 122 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 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 Boston, United States whose own description of what they do matches “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 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 regulatory law firms, and records with no verified work email. Companies headquartered outside Boston 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, 5,696 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 29, 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 law firms by metro in the United States

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 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 regulatory law firms are there based in Boston, United States?

RevenueBase identified 122 regulatory law firms headquartered in Boston, 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?

Goodwin, headquartered in Boston, tops this list with the largest team on record.

Which city in the United States has the most regulatory law firms?

New York leads the United States with 423 headquartered companies, followed by Washington (302) and Chicago (230). Boston has 122.

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 5,696 verified decision-maker contacts tracked across these 122 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 29, 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.