Company lists · Data refreshed September 2026

Top 25 Liability insurance underwriters based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 98 companies tracked

RevenueBase identified 98 company matches for liability insurance underwriters associated with the United States as of September 2026 and tracks 2,176 professional contacts across them, including 1,184 with verified work emails. Los Angeles is the largest hub.

This list covers company matches for liability insurance 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 17, 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 17, 2026 How this list was built

98Companies

2,176Contacts tracked

1,184Verified emails

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The 25 largest liability insurance underwriters based in the United States

Ranked by team size

Top 25 of 98 company matches for liability insurance underwriters based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Rsui Group, INC	Exact match	Atlanta, GA, United StatesHQ recorded Sep 17, 2026	201-500	442 contacts →
	Exact match “RSUI is a leading underwriter of wholesale specialty insurance.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Atlantic Casualty Insurance CO	Exact match	Goldsboro, NC, United StatesHQ recorded Sep 17, 2026	201-500	335 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 17, 2026 · View company records in RevenueBase
3	Mid-Continent Group	Exact match	Tulsa, OK, United StatesHQ recorded Sep 17, 2026	201-500	208 contacts →
	Exact match “We are Mid-Continent Group - Strong, Secure, Flexible and Supportive.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Berkley Select A Berkley Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 17, 2026	51-200	130 contacts →
	Exact match “Berkley Select is a leading provider of professional liability insurance products across a full spectrum of disciplines and industries, for clients of virtually every size and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Great American Custom	Exact match	los Angeles, CA, United StatesHQ recorded Sep 17, 2026	201-500	127 contacts →
	Exact match “Great American Custom is a division of Great American Insurance Group, focused on long-term client relationships and customized business solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Cochrane & Company	Exact match	Spokane, WA, United StatesHQ recorded Sep 17, 2026	51-200	71 contacts →
	Exact match “Cochrane & Company was established in 1960 in Spokane, Washington.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Berkley Healthcare A Berkley Company	Exact match	Chesterfield, MO, United StatesHQ recorded Sep 17, 2026	51-200	65 contacts →
	Exact match “Berkley Healthcare helps protect healthcare organizations and their executives against the professional, financial and reputational risks they face in today’s complex and changing…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Universal Fire & Casualty Insurance Company	Exact match	Waterford, MI, United StatesHQ recorded Sep 17, 2026	11-50	49 contacts →
	Exact match “Universal Fire & Casualty Insurance Company (UFCIC) currently underwrites commercial property, general liability, business owner’s package (BOP), commercial multi-peril (CMP), and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Berkley Alliance Managers A Berkley Company	Exact match	Albany, NY, United StatesHQ recorded Sep 17, 2026	51-200	45 contacts →
	Exact match “Berkley Alliance Managers offers innovative Professional Liability insurance coverage and risk management solutions.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Riscom Regional Insurance Services Company, LLC	Exact match	Shreveport, LA, United StatesHQ recorded Sep 17, 2026	51-200	42 contacts →
	Exact match “We are a professional insurance underwriting management company specializing in Commercial Automobile, Commercial General Liability, Commercial Property, Inland Marine and Garage…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	First Insurance Group, INC	Exact match	Bloomington, IN, United StatesHQ recorded Sep 17, 2026	11-50	28 contacts →
	Exact match “First Insurance Group has been providing insurance and risk management solutions since 1928 and has grown to become one of the premier agencies in South-Central Indiana.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	GIC Underwriters, INC	Exact match	Miami, FL, United StatesHQ recorded Sep 17, 2026	11-50	28 contacts →
	Exact match “At GIC Underwriters our success is based on 30 years of superior service, conservative underwriting and commitment to meeting the needs of our producers.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Canopy Specialty Insurance LLC	Exact match	Miami, FL, United StatesHQ recorded Sep 17, 2026	11-50	22 contacts →
	Exact match “Canopy Specialty Insurance is an Insurance Program Administrator/Manager that underwrites Specialty insurance product lines exclusively on behalf of "A" rated carrier partners and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Applied Specialty Underwriters	Exact match	Chicago, IL, United StatesHQ recorded Sep 17, 2026	11-50	22 contacts →
	Exact match “Applied Specialty Underwriters provides liability insurance coverage, including primary and excess liability for project-based construction, New York construction, infrastructure…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Schaefer Enterprises	Exact match	New York, NY, United StatesHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match “Schaefer Enterprises: A division of Patriot Growth Insurance Services, LLC is an insurance agency specializing in all aspects of business and personal insurance.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Berkley Construction Professional A Berkley Company	Exact match	Roswell, GA, United StatesHQ recorded Sep 17, 2026	11-50	17 contacts →
	Exact match “Our clients are the reason we exist.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Stateside Underwriting Agency	Exact match	Crystal Lake, IL, United StatesHQ recorded Sep 17, 2026	51-200	16 contacts →
	Exact match “Stateside Underwriting Agency: Underwriting Manager for specialty insurance solutions like the Mortgage Bankers Bond, Mortgage Company Professional Liability, Employment Practices…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Champlain Insurance Group	Exact match	Manchester, NH, United StatesHQ recorded Sep 17, 2026	51-200	16 contacts →
	Exact match “Champlain Insurance Group is a general liability and excess insurance enterprise.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Commonwealth Underwriters, LTD	Exact match	Richmond, VA, United StatesHQ recorded Sep 17, 2026	11-50	15 contacts →
	Exact match “Commonwealth Underwriters connects independent insurance agents to insurance markets for difficult and specialty risks.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	American Professional Agency, INC	Exact match	Amityville, NY, United StatesHQ recorded Sep 17, 2026	51-200	13 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	First Indemnity Insurance Agency, INC	Exact match	Boston, MA, United StatesHQ recorded Sep 17, 2026	11-50	12 contacts →
	Exact match “First Indemnity Insurance Agency is one of largest Managing Underwriters of professional liability insurance in the United States.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	L Squared Insurance Agency LLC	Exact match	Grand Rapids, MI, United StatesHQ recorded Sep 17, 2026	11-50	12 contacts →
	Exact match “We are an Independent Insurance Agency whose sole purpose is to provide high quality, competitively priced professional liability insurance for our clients.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Professional Governmental Underwriters, LLC	Exact match	Richmond, VA, United StatesHQ recorded Sep 17, 2026	11-50	12 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Profinity Insurance Services	Exact match	Los Angeles, United StatesHQ recorded Sep 17, 2026	1-10	10 contacts →
	Exact match “ProFinity Insurance Services was born out of a desire to provide a better wholesale professional liability solution for today's design, engineering, construction and manufacturing…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Liftman Insurance	Exact match	Boston, MA, United StatesHQ recorded Sep 17, 2026	1-10	9 contacts →
	Exact match “Liftman Insurance focuses solely on insurance for the investment industry.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “liability insurance underwriters”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 98 liability insurance underwriters based in the United States

See the full list, filter by size, metro and specialty, and access 1,184 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Liability insurance underwriters based in the United States at a glance

As of Sep 17, 2026

54.4%Verified-email coverage

22.2Average contacts per company

1-10Median size (employees)

4.1%Largest-city concentration · Los Angeles

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 98 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 “liability insurance 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 1,184 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 17, 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 “liability insurance underwriters”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many liability insurance underwriters are there based in the United States?

RevenueBase identified 98 company matches for liability insurance 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?

Rsui Group, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most liability insurance underwriters?

Los Angeles leads with 4 company records, followed by New York (4) and Chicago (3).

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 1,184 professional contacts with verified work emails tracked across these 98 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 17, 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.