Company lists · Data refreshed September 2026

Top 25 Marine insurance law firms based in the United States

Name: Marine insurance law 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 1,088 companies tracked

RevenueBase identified 1,088 marine insurance law firms headquartered in the United States as of September 2026 and tracks 22,522 professional contacts across them, including 11,963 with verified work emails and 11,520 with mobile numbers. New York is the largest hub.

This list covers marine insurance 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 5, 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 5, 2026 86% judged on-target in blind review

1,088Companies

22,522Contacts tracked

11,963Verified emails

11,520Mobile numbers

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The 25 largest marine insurance law firms based in the United States

Ranked by team size

Top 25 of 1,088 marine insurance law firms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to marine insurance 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	Marshall Dennehey	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	1,001-5,000	1,147 contacts →
	Indirect evidence “Welcome to our company page!” Source: RevenueBase Database · checked Sep 5, 2026
2	Quintairos, Prieto, Wood & Boyer, P.A	Partial evidence	Miami, FL, United StatesHQ checked Sep 5, 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 5, 2026
3	Phelps Dunbar LLP	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 5, 2026	501-1,000	824 contacts →
	Indirect evidence “As an AmLaw 200 firm, Phelps provides strategic legal counsel to businesses across the South, with 17 offices in the U.S.” Source: RevenueBase Database · checked Sep 5, 2026
4	Mcangus Goudelock & Courie	Strong evidence	Columbia, SC, United StatesHQ checked Sep 5, 2026	501-1,000	576 contacts →
	Strong evidence “MGC is a metrics-driven law built specifically to serve the insurance industry, their insureds and self-insureds.#MGCLaw #TeamMGC” Source: RevenueBase Database · checked Sep 5, 2026
5	Litchfield Cavo LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	501-1,000	424 contacts →
	Partial evidence “Litchfield Cavo LLP began as a small firm of attorneys experienced in insurance and business defense matters.” Source: RevenueBase Database · checked Sep 5, 2026
6	Morrison Mahoney LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 5, 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 5, 2026
7	Luks, Santaniello, Petrillo, Cohen & Peterfriend	Partial evidence	Ft. Lauderdale, FL, United StatesHQ checked Sep 5, 2026	201-500	356 contacts →
	Partial evidence “Our verdicts tell the story.™ Luks and Santaniello, LLC is a Corporate and Insurance Defense Litigation firm committed to securing equal justice in the courtroom for…” Source: RevenueBase Database · checked Sep 5, 2026
8	Butler Weihmuller Katz Craig LLP	Indirect evidence	Tampa, FL, United StatesHQ checked Sep 5, 2026	201-500	329 contacts →
	Indirect evidence “Butler is a civil litigation firm.” Source: RevenueBase Database · checked Sep 5, 2026
9	Margolis Edelstein	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	201-500	277 contacts →
	Indirect evidence “Margolis Edelstein was founded in Philadelphia over 65 years ago.” Source: RevenueBase Database · checked Sep 5, 2026
10	Conroy Simberg	Strong evidence	Hollywood, FL, United StatesHQ checked Sep 5, 2026	501-1,000	277 contacts →
	Strong evidence “Conroy Simberg is a result-oriented insurance defense law firm offering a full range of legal services to insurance companies, self-insured organizations, businesses and…” Source: RevenueBase Database · checked Sep 5, 2026
11	Schouest, Bamdas, Soshea & Benmaier Pllc	Partial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	271 contacts →
	Partial evidence “Schouest, Bamdas, Soshea & BenMaier PLLC is a law firm focused on your needs.” Source: RevenueBase Database · checked Sep 5, 2026
12	Jones, Skelton & Hochuli	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 5, 2026	51-200	271 contacts →
	Indirect evidence “Founded in 1983, Jones, Skelton & Hochuli's 100 trial and appellate attorneys defend insureds, self-insureds, government entities, corporations, and professional liability…” Source: RevenueBase Database · checked Sep 5, 2026
13	Kiernan Trebach LLP	Partial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	51-200	270 contacts →
	Partial evidence “Kiernan Trebach is a mid-sized law firm with offices throughout the Northeast and Mid-Atlantic regions of the United States – from Maine to Florida.” Source: RevenueBase Database · checked Sep 5, 2026
14	Weber Gallagher	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	201-500	264 contacts →
	Partial evidence “With more than 160 legal professionals, Weber Gallagher provides counsel to local, national and international businesses, insurance companies and financial institutions in…” Source: RevenueBase Database · checked Sep 5, 2026
15	Tressler LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	51-200	237 contacts →
	Partial evidence “Tressler LLP is a national law firm headquartered in Chicago, with ten offices located in six states - California, Illinois, Missouri, New Jersey, New York and Pennsylvania.” Source: RevenueBase Database · checked Sep 5, 2026
16	Kaufman Borgeest & Ryan LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	201-500	237 contacts →
	Indirect evidence “Kaufman Borgeest & Ryan LLP was founded over twenty years ago, by experienced and nationally recognized defense attorneys dedicated to providing the highest quality legal services…” Source: RevenueBase Database · checked Sep 5, 2026
17	Clausen Miller P.C	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	201-500	232 contacts →
	Indirect evidence “Founded over 80 years ago, Clausen Miller represents businesses, insurers and professionals through strategic, cost-effective litigation and counseling across the nation and…” Source: RevenueBase Database · checked Sep 5, 2026
18	Mendes & Mount LLP	Strong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	206 contacts →
	Strong evidence “Founded in 1916, Mendes & Mount LLP is one of the largest firms in the country devoted exclusively to the practice of insurance law.” Source: RevenueBase Database · checked Sep 5, 2026
19	Hamilton Miller & Birthisel	Partial evidence	Miami, FL, United StatesHQ checked Sep 5, 2026	201-500	192 contacts →
	Partial evidence “Hamilton, Miller & Birthisel, LLP is an AV rated, minority certified law firm based in Florida with offices throughout the state and in Kingston, Jamaica and the U.S.” Source: RevenueBase Database · checked Sep 5, 2026
20	L'abbate, Balkan, Colavita & Contini, L.L.P	Indirect evidence	Melville, NY, United StatesHQ checked Sep 5, 2026	n/a	192 contacts →
	Indirect evidence “L’Abbate, Balkan, Colavita & Contini, L.L.P.” Source: RevenueBase Database · checked Sep 5, 2026
21	Zelle LLP	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 5, 2026	51-200	179 contacts →
	Partial evidence “Zelle LLP is an international litigation and dispute resolution law firm with offices in Atlanta, Boston, Dallas, Fort Lauderdale, London, Minneapolis, New York, Oakland…” Source: RevenueBase Database · checked Sep 5, 2026
22	Semmes, Bowen & Semmes	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 5, 2026	51-200	169 contacts →
	Partial evidence “Semmes is one of the oldest and largest full-service law firms in the State of Maryland.” Source: RevenueBase Database · checked Sep 5, 2026
23	Anderson Kill	Strong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	161 contacts →
	Strong evidence “Anderson Kill is a full-service corporate law firm best known for its work in insurance recovery.” Source: RevenueBase Database · checked Sep 5, 2026
24	Zausmer, P.C	Indirect evidence	Farmington Hills, MI, United StatesHQ checked Sep 5, 2026	51-200	160 contacts →
	Indirect evidence “We are committed to innovating and evolving, but our vision remains a constant.” Source: RevenueBase Database · checked Sep 5, 2026
25	Gallo Vitucci Klar LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	159 contacts →
	Indirect evidence “Gallo Vitucci Klar LLP is a full service litigation firm consisting of more than 130 attorneys and having an extensive practice dedicated to providing experienced and innovative…” Source: RevenueBase Database · checked Sep 5, 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: marine insurance 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 marine insurance law firms.
Partial evidence: Its own public description names part of marine insurance law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name marine insurance 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 1,088 marine insurance law firms based in the United States

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Marine insurance law firms based in the United States at a glance

As of Sep 5, 2026

53.1%Verified-email coverage

51.1%Mobile-number coverage

20.7Average contacts per company

1-10Median size (employees)

5.5%Largest-city concentration · New York

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

547

11-50

405

51-200

107

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

11,1760–30

74031–60

361–90

790–180

37180+

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 marine insurance 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 “marine insurance 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 marine insurance 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 marine insurance 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, 11,963 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.

Marine insurance law firms 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 marine insurance 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 marine insurance law firms are there based in the United States?

RevenueBase identified 1,088 marine insurance 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?

Marshall Dennehey, headquartered in Philadelphia, tops this list with the largest team on record.

Which city has the most marine insurance law firms?

New York leads with 60 headquartered companies, followed by New Orleans (52) and Miami (49).

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 11,963 verified decision-maker contacts tracked across these 1,088 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 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.