Company lists · Data refreshed September 2026

Top 25 Specialty insurance companies based in the United States

Name: Specialty insurance companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 2,088 companies tracked

RevenueBase identified 2,088 specialty insurance companies headquartered in the United States as of September 2026 and tracks 139,916 professional contacts across them, including 61,054 with verified work emails. New York is the largest hub.

This list covers specialty insurance companies 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 18, 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 18, 2026 86% judged on-target in blind review

2,088Companies

139,916Contacts tracked

61,054Verified emails

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The 25 largest specialty insurance companies based in the United States

Ranked by team size

Top 25 of 2,088 specialty insurance companies based in the United States, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to specialty insurance companies: 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	CNA Insurance	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	5,001-10,000	6,984 contacts →
	Indirect evidence “CNA is one of the largest U.S.” Source: RevenueBase Database · checked Sep 18, 2026
2	Kemper	Partial evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	5,001-10,000	5,419 contacts →
	Partial evidence “The Kemper family of companies is one of the nation’s leading specialized insurers.” Source: RevenueBase Database · checked Sep 18, 2026
3	Great American Insurance Group	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 18, 2026	5,001-10,000	5,039 contacts →
	Indirect evidence “For more than 150 years, customers have trusted us to protect what matters most to them.” Source: RevenueBase Database · checked Sep 18, 2026
4	Amwins	Strong evidence	Charlotte, NC, United StatesHQ checked Sep 18, 2026	5,001-10,000	4,926 contacts →
	Strong evidence “Amwins is the largest wholesale distributor of specialty insurance products and services in the U.S.” Source: RevenueBase Database · checked Sep 18, 2026
5	Amtrust Financial Services, INC	Partial evidence	New York, NY, United StatesHQ checked Sep 18, 2026	5,001-10,000	4,734 contacts →
	Partial evidence “AmTrust Financial Services, Inc, through its subsidiaries, operates as a multinational property and casualty insurance company.” Source: RevenueBase Database · checked Sep 18, 2026
6	Sentry	Partial evidence	Stevens Point, WI, United StatesHQ checked Sep 18, 2026	5,001-10,000	3,963 contacts →
	Partial evidence “Sentry Insurance got its start in 1904, when members of the Wisconsin Retail Hardware Association formed their own insurance company.” Source: RevenueBase Database · checked Sep 18, 2026
7	Everest	Strong evidence	Warren, NJ, United StatesHQ checked Sep 18, 2026	1,001-5,000	3,411 contacts →
	Strong evidence “Everest Group, Ltd.(“Everest”) is a global underwriting leader providing best-in-class property, casualty, and specialty reinsurance and insurance solutions that address…” Source: RevenueBase Database · checked Sep 18, 2026
8	Markel	Partial evidence	Glen Allen, VA, United StatesHQ checked Sep 18, 2026	1,001-5,000	3,151 contacts →
	Partial evidence “As the insurance operations within the Markel Group Inc.(NYSE: MKL), we leverage a broad array of capabilities and expertise to create intelligent solutions for the most complex…” Source: RevenueBase Database · checked Sep 18, 2026
9	Mcgriff	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 18, 2026	1,001-5,000	3,021 contacts →
	Indirect evidence “When it comes to protecting what matters most in business and everyday life, at McGriff we believe our clients should never settle for less than the best.” Source: RevenueBase Database · checked Sep 18, 2026
10	CRC Group	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 18, 2026	5,001-10,000	2,959 contacts →
	Indirect evidence “CRC Group is all about progress.” Source: RevenueBase Database · checked Sep 18, 2026
11	RT Specialty	Strong evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,955 contacts →
	Strong evidence “RT Specialty is a leading wholesale distributor of specialty insurance products and services and the wholesale broking specialty for Ryan Specialty.” Source: RevenueBase Database · checked Sep 18, 2026
12	Selective Insurance	Partial evidence	Branchville, NJ, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,931 contacts →
	Partial evidence “At Selective, we maintain a commitment to provide unique insurance solutions that help keep the families and businesses of our communities protected.” Source: RevenueBase Database · checked Sep 18, 2026
13	Arch Insurance Group INC	Strong evidence	Jersey City, NJ, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,704 contacts →
	Strong evidence “Arch Insurance Group Inc, a division of Arch Capital Group Ltd.(ACGL), is a market-leading specialty insurer.” Source: RevenueBase Database · checked Sep 18, 2026
14	Risk Strategies Company	Indirect evidence	Boston, MA, United StatesHQ checked Sep 18, 2026	5,001-10,000	2,206 contacts →
	Indirect evidence “At Risk Strategies, part of the Brown & Brown team, we help our clients protect those things that matter most to them.” Source: RevenueBase Database · checked Sep 18, 2026
15	Crum & Forster	Strong evidence	Morristown, NJ, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,105 contacts →
	Strong evidence “Crum & Forster (C&F) provides market leading property & casualty, accident & health, specialty and standard commercial lines insurance solutions.” Source: RevenueBase Database · checked Sep 18, 2026
16	Tokio Marine HCC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 18, 2026	1,001-5,000	2,006 contacts →
	Indirect evidence “Tokio Marine HCC focuses on what matters most; our people.” Source: RevenueBase Database · checked Sep 18, 2026
17	QBE North America	Indirect evidence	New York, NY, United StatesHQ checked Sep 18, 2026	10001+	1,883 contacts →
	Indirect evidence “At QBE we’re driven by our purpose of enabling a more resilient future.” Source: RevenueBase Database · checked Sep 18, 2026
18	Berkshire Hathaway Specialty Insurance	Strong evidence	Boston, MA, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,799 contacts →
	Strong evidence “Berkshire Hathaway Specialty Insurance is an organization committed to providing long-term risk solutions and claims care to our customers backed by the financial strength of…” Source: RevenueBase Database · checked Sep 18, 2026
19	Intact Insurance Specialty Solutions	Indirect evidence	Plymouth, MN, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,388 contacts →
	Indirect evidence “We are here to help people, businesses and society prosper in good times and be resilient in bad times.” Source: RevenueBase Database · checked Sep 18, 2026
20	RLI Insurance Company	Partial evidence	Peoria, IL, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,386 contacts →
	Partial evidence “RLI is a U.S-based specialty insurer that serves niche property, casualty and surety markets.” Source: RevenueBase Database · checked Sep 18, 2026
21	Radian	Partial evidence	Wayne, PA, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,262 contacts →
	Partial evidence “Radian Group Inc.(NYSE: RDN) is a trusted, global multi-line specialty insurer, built to empower confident business decisions around the world.” Source: RevenueBase Database · checked Sep 18, 2026
22	Capspecialty	Strong evidence	Middleton, WI, United StatesHQ checked Sep 18, 2026	201-500	1,145 contacts →
	Strong evidence “CapSpecialty® is a leading provider of specialty insurance for small to mid-sized businesses in the U.S, offering casualty, professional liability, surety and fidelity products in…” Source: RevenueBase Database · checked Sep 18, 2026
23	Pure Insurance	Partial evidence	White Plains, NY, United StatesHQ checked Sep 18, 2026	501-1,000	1,116 contacts →
	Partial evidence “PURE is a specialty property and casualty insurer dedicated to helping a membership of responsible people protect high value homes, jewelry, artwork and other fine assets.” Source: RevenueBase Database · checked Sep 18, 2026
24	American Modern Insurance Group	Partial evidence	Cincinnati, OH, United StatesHQ checked Sep 18, 2026	1,001-5,000	1,113 contacts →
	Partial evidence “American Modern provides insurance solutions for customers who need coverage not readily found in the general market.” Source: RevenueBase Database · checked Sep 18, 2026
25	Ryan Specialty	Strong evidence	Chicago, IL, United StatesHQ checked Sep 18, 2026	5,001-10,000	1,079 contacts →
	Strong evidence “Ryan Specialty (NYSE: RYAN) is an international specialty insurance firm that provides distribution, underwriting, product development, administration and risk management services…” Source: RevenueBase Database · checked Sep 18, 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: specialty insurance companies. 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 specialty insurance companies.
Partial evidence: Its own public description names part of specialty insurance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name specialty insurance companies. 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 2,088 specialty insurance companies based in the United States

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Specialty insurance companies based in the United States at a glance

As of Sep 18, 2026

43.6%Verified-email coverage

67.0Average contacts per company

11-50Median size (employees)

3.2%Largest-city concentration · New York

Sep 18, 2026Page data refreshed

Companies by employee count

1-10

985

11-50

695

51-200

217

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 2,088 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 specialty insurance companies, 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 “specialty insurance companies”. 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 specialty insurance companies), 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 specialty insurance companies, 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, 61,054 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 18, 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.

Specialty insurance companies 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 specialty insurance companies, 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 specialty insurance companies are there based in the United States?

RevenueBase identified 2,088 specialty insurance companies 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?

CNA Insurance, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most specialty insurance companies?

New York leads with 67 headquartered companies, followed by Chicago (44) and Houston (42).

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 61,054 verified decision-maker contacts tracked across these 2,088 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 18, 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.