Company lists · Data refreshed November 2026

Top 25 Excess and surplus insurers worldwide

RevenueBase identified 279 company matches for excess and surplus insurers worldwide as of November 2026 and tracks 20,522 professional contacts across them, including 10,406 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for excess and surplus insurers worldwide, 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 November 6, 2026. Country and city lists for excess and surplus insurers follow the table.

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 Nov 6, 2026 How this list was built
279Companies
20,522Contacts tracked
10,406Verified emails
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The 25 largest excess and surplus insurers worldwide

Ranked by team size
Top 25 of 279 company matches for excess and surplus insurers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchLondon, BC, United KingdomHQ recorded Nov 6, 20261,001-5,0002,710 contacts →

Exact match

“We are a specialty insurer with more than three decades of experience in providing clients with the highest standards of underwriting and claims service worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchPeoria, IL, United StatesHQ recorded Nov 6, 20261,001-5,0001,459 contacts →

Exact match

“RLI is a U.S-based specialty insurer that serves niche property, casualty and surety markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchWilkes-barre, PA, United StatesHQ recorded Nov 6, 20261,001-5,000877 contacts →

Exact match

“Rated A+ Superior by AM Best (8/12/26), Berkshire Hathaway GUARD Insurance Companies provides Property & Casualty insurance including Excess & Surplus lines.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchRichmond, VA, United StatesHQ recorded Nov 6, 2026501-1,000678 contacts →

Exact match

“Kinsale Insurance is an excess and surplus (E&S) lines insurance company located in Richmond, VA specializing in hard-to-place property, casualty, and specialty risks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchMoorestown, GA, United StatesHQ recorded Nov 6, 2026201-500656 contacts →

Exact match

“Admiral Insurance Group, a Berkley company, provides excess and surplus (E&S) lines of commercial insurance exclusively through our nationwide network of wholesale brokers.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchJacksonville, LA, United StatesHQ recorded Nov 6, 2026501-1,000595 contacts →

Exact match

“For more than 45 years, Fortegra and its subsidiaries have delivered risk management solutions that help people and businesses succeed in the face of uncertainty.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchLondon, United KingdomHQ recorded Nov 6, 2026501-1,000591 contacts →

Exact match

“CNA Hardy is a leading specialist commercial insurance provider for clients within the Lloyd’s and company markets.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8Exact matchRichmond, VA, United StatesHQ recorded Nov 6, 2026501-1,000537 contacts →

Exact match

“James River® is a specialty insurer operating on an Excess & Surplus Lines basis in all fifty states and D.C.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026501-1,000466 contacts →

Exact match

“Argo Group is a U.S-focused underwriter of specialty insurance products in the property and casualty market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 2026201-500456 contacts →

Exact match

“RSUI is a leading underwriter of wholesale specialty insurance.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Nov 6, 20261,001-5,000455 contacts →

Exact match

“Jencap is a national wholesale insurance intermediary serving retail agents through wholesale brokerage, binding authority, and program management.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12Exact matchFond Du Lac, WI, United StatesHQ recorded Nov 6, 2026201-500423 contacts →

Exact match

“Society Insurance has been a leading niche insurance carrier since 1915.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHartford, CT, United StatesHQ recorded Nov 6, 202610001+401 contacts →

Exact match

“Navigators, a brand of The Hartford is a market-leading provider of E&S solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026201-500399 contacts →

Exact match

“Seneca Insurance Company is a Specialty Property and Casualty Insurance company with thirteen offices across the U.S.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchAlpharetta, GA, United StatesHQ recorded Nov 6, 2026501-1,000376 contacts →

Exact match

“About Us Westchester is one of the largest and most diverse excess and surplus lines commercial property and casualty insurance companies in the United States.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchNY, United StatesHQ recorded Nov 6, 20261,001-5,000358 contacts →

Exact match

“Ironshore, a Liberty Mutual Company, is dedicated to the wholesale market.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchAuckland, New ZealandHQ recorded Nov 6, 20261,001-5,000349 contacts →

Exact match

“For more than 165 years, we’ve been helping Kiwi in all lines of work, in all parts of the country, through good times and bad.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchAtlanta, GA, United StatesHQ recorded Nov 6, 20261,001-5,000338 contacts →

Exact match

“CRC Swett has over 100 years of experience in helping to mitigate the risks of doing business here and around the globe.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchGlen Allen, VA, United StatesHQ recorded Nov 6, 202651-200252 contacts →

Exact match

“Richmond National is a specialty property & casualty insurance company focused on providing insurance to small and mid-size businesses that are unable to find coverage in the…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchIndianapolis, IN, United StatesHQ recorded Nov 6, 2026201-500252 contacts →

Exact match

“Arlington/Roe was founded in 1964 by Francis Roe, father of president and owner, James A.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchSandy, UT, United StatesHQ recorded Nov 6, 202651-200235 contacts →

Exact match

“Prime Insurance Company is an excess and surplus lines insurance carrier that specializes in providing solutions for hard-to-place and declined risks.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchNew York, NY, United StatesHQ recorded Nov 6, 2026201-500211 contacts →

Exact match

“Combining state-of-the-art technology solutions with a total, customer-centered commitment to service, Ategrity empowers streamlined decision-making with easy, responsive…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchChesterfield, MO, United StatesHQ recorded Nov 6, 2026201-500206 contacts →

Exact match

“Midwest Employers Casualty (MEC) is exclusively focused on tailored workers’ compensation excess insurance products that meet the unique needs of individual employers, groups and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchStamford, IL, United StatesHQ recorded Nov 6, 202651-200205 contacts →

Exact match

“GenStar Insurance Services, LLC is a premier provider of excess, surplus, and specialty property and casualty insurance written on General Star Indemnity Company (non-admitted)…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchBurlington, NC, United StatesHQ recorded Nov 6, 2026201-500181 contacts →

Exact match

“CRC Tapco is an Excess and Surplus Lines MGA dedicated to providing fast and accurate service made possible by our cutting-edge technology and our staff of friendly…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 279 excess and surplus insurers worldwide

See the full list, filter by size, metro and specialty, and access 10,406 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Excess and surplus insurers worldwide at a glance

As of Nov 6, 2026
50.7%Verified-email coverage
73.6Average contacts per company
11-50Median size (employees)
3.9%Largest-city concentration · New York
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
106
11-50
89
51-200
33
201-500
23
501-1,000
12
1,001-5,000
10
5,001-10,000
1
10001+
1

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for excess and surplus insurers are linked below.
What qualifies
Company records worldwide whose business descriptions match “excess and surplus insurers” 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. 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 10,406 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 November 6, 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.

Excess and surplus insurers by location

2 lists · largest first

Every Excess and surplus insurers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “excess and surplus insurers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many excess and surplus insurers are there worldwide?

RevenueBase identified 279 company matches for excess and surplus insurers worldwide as of November 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?

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

Which country has the most excess and surplus insurers?

The United States leads with 180 companies, followed by the United Kingdom (25). Every excess and surplus insurers list by country and city is linked on this page.

Which city has the most excess and surplus insurers?

New York leads with 11 company records, followed by London (9) and Houston (7).

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 10,406 professional contacts with verified work emails tracked across these 279 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 November 6, 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.