Company lists · Data refreshed November 2026

Top 25 Insurance underwriting services based in the United States

Name: Insurance underwriting services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 505 companies tracked

RevenueBase identified 505 company matches for insurance underwriting services associated with the United States as of November 2026 and tracks 8,622 professional contacts across them, including 2,762 with verified work emails. New York is the largest hub.

This list covers company matches for insurance underwriting services 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 November 6, 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 Nov 6, 2026 How this list was built

505Companies

8,622Contacts tracked

2,762Verified emails

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The 25 largest insurance underwriting services based in the United States

Ranked by team size

Top 25 of 505 company matches for insurance underwriting services based in the United States, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	USLI	Exact match	Wayne, CO, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,352 contacts →
	Exact match “We aspire to be the very best insurance company at underwriting insurance products for our customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2	ISO	Exact match	Jersey City, NJ, United StatesHQ recorded Nov 6, 2026	5,001-10,000	1,152 contacts →
	Exact match “Underwriting solutions at Verisk is a leading provider of advanced tools and analytics for the property/casualty and life insurance industries.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3	Atlantic Casualty Insurance CO	Exact match	Goldsboro, VA, United StatesHQ recorded Nov 6, 2026	201-500	337 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 · Nov 6, 2026 · View company records in RevenueBase
4	Euclid Transactional	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	51-200	201 contacts →
	Exact match “Euclid Transactional is a leading global managing general agent that specializes in transactional risk insurance, including representations and warranties insurance and tax…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Amway Corporation	Exact match	Arlington, TX, United StatesHQ recorded Nov 6, 2026	n/a	124 contacts →
	Exact match “Amway Corporation is an Insurance company located in 2001 Timberlake Dr, Arlington, Texas, United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6	TSIB	Exact match	Saddle Brook, CT, United StatesHQ recorded Nov 6, 2026	51-200	110 contacts →
	Exact match “TSIB was founded in 2005 as a subsidiary of Hochtief USA.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Verus Specialty Insurance A Berkley Company	Exact match	Glen Allen, VA, United StatesHQ recorded Nov 6, 2026	51-200	99 contacts →
	Exact match “Verus Specialty Insurance is an underwriting management company targeting small to midsize commercial risks in the E&S and Specialty insurance markets through appointed wholesale…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Wellington Insurance Group	Exact match	Fort Worth, TX, United StatesHQ recorded Nov 6, 2026	51-200	91 contacts →
	Exact match “Wellington Insurance Group is a Texas-based risk distribution and financial services organization specializing in the delivery and administration of residential property insurance.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Insurance Risk Services, INC	Exact match	Lake Mary, FL, United StatesHQ recorded Nov 6, 2026	51-200	84 contacts →
	Exact match “IRSi offers a full range of insurance inspection services and field underwriting support aimed at delivering you all the information you need to make informed decisions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Falcon Risk Services	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	51-200	83 contacts →
	Exact match “Falcon Risk Services, an HDI Company, is a provider of specialty underwriting and claims solutions to US and multinational corporations.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Sixfold	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	51-200	83 contacts →
	Exact match “Sixfold is the AI brain behind better underwriting.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	ONE Resource Group	Exact match	Roanoke, IN, United StatesHQ recorded Nov 6, 2026	51-200	77 contacts →
	Exact match “One Resource group was created in 2002 with the idea that one company could provide a level of service unmatched in the industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Cochrane & Company	Exact match	Spokane, WA, United StatesHQ recorded Nov 6, 2026	51-200	76 contacts →
	Exact match “Cochrane & Company was established in 1960 in Spokane, Washington.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Kalepa	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	51-200	69 contacts →
	Exact match “Make better underwriting decisions, faster with Kalepa.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	National Safety & Risk	Exact match	Riverhead, NY, United StatesHQ recorded Nov 6, 2026	51-200	65 contacts →
	Exact match “Who we are: National Safety & Risk Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Medical Risk Managers, INC	Exact match	East Hartford, CT, United StatesHQ recorded Nov 6, 2026	51-200	58 contacts →
	Exact match “Since 1984, MRM has specialized in medical stop loss, helping organizations make more informed risk decisions and build stronger programs.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Sutton National Group	Exact match	Delray Beach, FL, United StatesHQ recorded Nov 6, 2026	11-50	56 contacts →
	Exact match “With an A.M.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	IMS Paramedical, INC	Exact match	Newark, CA, United StatesHQ recorded Nov 6, 2026	11-50	55 contacts →
	Exact match “IMS provides underwriting support services for the life insurance industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Riscom Regional Insurance Services Company, LLC	Exact match	Shreveport, LA, United StatesHQ recorded Nov 6, 2026	51-200	46 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 · Nov 6, 2026 · View company records in RevenueBase
20	Universal Fire & Casualty Insurance Company	Exact match	Waterford, MI, United StatesHQ recorded Nov 6, 2026	11-50	38 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 · Nov 6, 2026 · View company records in RevenueBase
21	Capital Providers Insurance Services, INC	Exact match	Woodland Hills, CA, United StatesHQ recorded Nov 6, 2026	11-50	36 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Family Guardian Insurance CO	Exact match	Bedford, NH, United StatesHQ recorded Nov 6, 2026	51-200	34 contacts →
	Exact match “Guardian Life Ins Co is an Insurance company located in 116 S River Rd Unit B, Bedford, New Hampshire, United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Gateway Underwriters Agency, A Berkshire Hathaway Company	Exact match	Maryland Heights, MO, United StatesHQ recorded Nov 6, 2026	51-200	33 contacts →
	Exact match “Gateway Underwriters Agency is a professional wholesale insurance agency and a proud member of the Berkshire Hathaway Group.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Starline	Exact match	Osterville, MA, United StatesHQ recorded Nov 6, 2026	11-50	31 contacts →
	Exact match “Approachable, Knowledgeable, Dependable - these qualities are at the core of StarLine's Excess of Loss Self-Insurance and reinsurance offerings.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Acrisure	Exact match	Overland Park, MO, United StatesHQ recorded Nov 6, 2026	51-200	30 contacts →
	Exact match “Our Acrisure offices are located in Overland Park, KS, Topeka, KS, Wichita, KS and Belton, Mo.” Recorded in the RevenueBase company graph · Nov 6, 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 “insurance underwriting services”. 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 505 insurance underwriting services based in the United States

See the full list, filter by size, metro and specialty, and access 2,762 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Insurance underwriting services based in the United States at a glance

As of Nov 6, 2026

32.0%Verified-email coverage

17.1Average contacts per company

1-10Median size (employees)

2.6%Largest-city concentration · New York

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

306

11-50

143

51-200

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 505 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 “insurance underwriting services” 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 2,762 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.

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 “insurance underwriting services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many insurance underwriting services are there based in the United States?

RevenueBase identified 505 company matches for insurance underwriting services associated with the United States 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?

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

Which city has the most insurance underwriting services?

New York leads with 13 company records, followed by Dallas (9) and Miami (9).

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 2,762 professional contacts with verified work emails tracked across these 505 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.