Company lists · Data refreshed September 2026

Top 25 Marine underwriters based in the United States

RevenueBase identified 423 company matches for marine underwriters associated with the United States as of September 2026 and tracks 17,869 professional contacts across them, including 9,676 with verified work emails. New York is the largest hub.

This list covers company matches for marine underwriters associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built
423Companies
17,869Contacts tracked
9,676Verified emails
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The 25 largest marine underwriters based in the United States

Ranked by team size
Top 25 of 423 company matches for marine underwriters based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchWarren, NJ, United StatesHQ recorded Sep 20, 20261,001-5,0003,411 contacts →

Exact match

“Everest Group, Ltd.(“Everest”) is a global underwriting leader providing best-in-class property, casualty, and specialty reinsurance and insurance solutions that address…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchLincoln, RI, United StatesHQ recorded Sep 20, 20261,001-5,0003,040 contacts →

Exact match

“When you look at Amica, you’ll see we’re different.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchBala Cynwyd, PA, United StatesHQ recorded Sep 20, 20261,001-5,0002,185 contacts →

Exact match

“Philadelphia Insurance Companies, a member of the Tokio Marine Group, designs, markets and underwrites commercial property/casualty and professional liability insurance products…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchCincinnati, OH, United StatesHQ recorded Sep 20, 20261,001-5,0001,113 contacts →

Exact match

“American Modern provides insurance solutions for customers who need coverage not readily found in the general market.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchJersey City, NJ, United StatesHQ recorded Sep 20, 20261,001-5,000877 contacts →

Exact match

“SageSure is building the world’s leading catastrophe-risk franchise.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchCincinnati, OH, United StatesHQ recorded Sep 20, 20261,001-5,000635 contacts →

Exact match

“Core Specialty, through its subsidiary insurers, offers a diversified range of property, casualty, and marine insurance products for small to mid-sized businesses.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact matchPlantation, FL, United StatesHQ recorded Sep 20, 2026501-1,000494 contacts →

Exact match

“As an MGA, we offer a great deal of specialty products with professional service.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchLa Jolla, CA, United StatesHQ recorded Sep 20, 2026501-1,000363 contacts →

Exact match

“Founded in 2014, by a team with deep experience across underwriting, analytics, reinsurance and capital markets, Palomar is an innovative specialty insurer serving residential and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchGoldsboro, NC, United StatesHQ recorded Sep 20, 2026201-500335 contacts →

Exact match

“Atlantic Casualty Insurance Company (Atlantic Casualty) was formed by Strickland Insurance Group (SIG) in 1983 to underwrite a substantial book of non-standard personal auto.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchNorth Kingstown, RI, United StatesHQ recorded Sep 20, 202651-200228 contacts →

Exact match

“Falvey Insurance Group is one group with many solutions.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchLargo, United StatesHQ recorded Sep 20, 2026201-500170 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchMobile, AL, United StatesHQ recorded Sep 20, 202651-200159 contacts →

Exact match

“The American Equity Underwriters, Inc.(AEU) delivers specialized coverage and risk management solutions to waterfront employers across the United States.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchNew Orleans, LA, United StatesHQ recorded Sep 20, 2026201-500133 contacts →

Exact match

“Turn Services is one of the largest independent fleeting and shifting companies in the United States.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchSouth Norwalk, CT, United StatesHQ recorded Sep 20, 202651-200117 contacts →

Exact match

“Signal Mutual Indemnity Association Ltd was established in 1986 to meet the demand for reasonable and stable longshore workers’ compensation insurance rates.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchMattapoisett, MA, United StatesHQ recorded Sep 20, 202611-5093 contacts →

Exact match

“Award winning Insurance Agency, founded in 1927.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202651-20092 contacts →

Exact match

“Founded in 1861, Foa & Son are international insurance brokers based in New York City.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchJersey City, NJ, United StatesHQ recorded Sep 20, 202611-5087 contacts →

Exact match

“At EIMC, we are the trusted partner for marine insurance and global supply chain communities worldwide.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchWilmington, NC, United StatesHQ recorded Sep 20, 202651-20082 contacts →

Exact match

“For more than a century, Wells Insurance has combined the strength of a nationally competitive brokerage with the personal commitment of a family business.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchClearwater, FL, United StatesHQ recorded Sep 20, 202651-20081 contacts →

Exact match

“Our professional team of financing and insurance specialists have years of experience and are available to help answer your questions throughout the process.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchCovington, LA, United StatesHQ recorded Sep 20, 202611-5076 contacts →

Exact match

“Baker Marine Solutions is a leading provider of marine assurance, engineering and consulting services, performing DP assurance, OCIMF- OVID inspections, IMCA CMID inspections…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchSpokane, WA, United StatesHQ recorded Sep 20, 202651-20071 contacts →

Exact match

“Cochrane & Company was established in 1960 in Spokane, Washington.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchSeattle, WA, United StatesHQ recorded Sep 20, 2026201-50065 contacts →

Exact match

“Discovery Health is a medical risk management service for the commercial maritime industry, serving the men and women who make their living at sea.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchSchaumburg, IL, United StatesHQ recorded Sep 20, 20265,001-10,00062 contacts →

Exact match

“Berkley Fire & Marine was launched in 2013 and is a Berkley company offering preferred inland marine and related property risks and services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchDenver, CO, United StatesHQ recorded Sep 20, 202611-5053 contacts →

Exact match

“Parsyl is an insurer of complex supply chains with a mission to underwrite for impact by combining underwriting excellence with modern technology to guide customers toward more…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchNew York, NY, United StatesHQ recorded Sep 20, 202651-20052 contacts →

Exact match

“Founded in New York in 1917, celebrating 106 years of service, the American Club is the only P&I mutual domiciled in the Americas.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 423 marine underwriters based in the United States

See the full list, filter by size, metro and specialty, and access 9,676 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Marine underwriters based in the United States at a glance

As of Sep 20, 2026
54.1%Verified-email coverage
42.2Average contacts per company
1-10Median size (employees)
5.7%Largest-city concentration · New York
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
241
11-50
117
51-200
39
201-500
10
501-1,000
7
1,001-5,000
6
5,001-10,000
1
10001+
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 423 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United States whose business descriptions match “marine underwriters” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 9,676 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “marine underwriters”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many marine underwriters are there based in the United States?

RevenueBase identified 423 company matches for marine underwriters associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Everest tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most marine underwriters?

New York leads with 24 company records, followed by Houston (19) and Fort Lauderdale (15).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 9,676 professional contacts with verified work emails tracked across these 423 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 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.