Company lists · Data refreshed September 2026

Top 25 Underwriting management companies based in the United States

Name: Underwriting management 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 22, 2026 978 companies tracked

RevenueBase identified 978 underwriting management companies headquartered in the United States as of September 2026 and tracks 74,091 professional contacts across them, including 39,314 with verified work emails. New York is the largest hub.

This list covers underwriting management 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 22, 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 22, 2026 86% judged on-target in blind review

978Companies

74,091Contacts tracked

39,314Verified emails

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The 25 largest underwriting management companies based in the United States

Ranked by team size

Top 25 of 978 underwriting management companies based in the United States, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to underwriting management 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	Lockton	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 22, 2026	10001+	13,482 contacts →
	Indirect evidence “What makes Lockton stand apart is also what makes us better: independence.” Source: RevenueBase Database · checked Sep 22, 2026
2	Amwins	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 22, 2026	5,001-10,000	4,926 contacts →
	Indirect evidence “Amwins is the largest wholesale distributor of specialty insurance products and services in the U.S.” Source: RevenueBase Database · checked Sep 22, 2026
3	CRC Group	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 22, 2026	5,001-10,000	2,959 contacts →
	Indirect evidence “CRC Group is all about progress.” Source: RevenueBase Database · checked Sep 22, 2026
4	RT Specialty	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 22, 2026	1,001-5,000	2,955 contacts →
	Indirect 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 22, 2026
5	Berkshire Hathaway Specialty Insurance	Indirect evidence	Boston, MA, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,799 contacts →
	Indirect 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 22, 2026
6	USLI	Partial evidence	Wayne, PA, United StatesHQ checked Sep 22, 2026	1,001-5,000	1,314 contacts →
	Partial evidence “We aspire to be the very best insurance company at underwriting insurance products for our customers.” Source: RevenueBase Database · checked Sep 22, 2026
7	Acrisure	Indirect evidence	Canoga Park, CA, United StatesHQ checked Sep 22, 2026	n/a	1,147 contacts →
	Indirect evidence “Founded in 1972, Allen Lawrence & Associates, LLC.(AL & A) has the distinct advantage of active participation by its principals.” Source: RevenueBase Database · checked Sep 22, 2026
8	ISO	Partial evidence	Jersey City, NJ, United StatesHQ checked Sep 22, 2026	5,001-10,000	1,097 contacts →
	Partial evidence “Underwriting solutions at Verisk is a leading provider of advanced tools and analytics for the property/casualty and life insurance industries.” Source: RevenueBase Database · checked Sep 22, 2026
9	Ryan Specialty	Strong evidence	Chicago, IL, United StatesHQ checked Sep 22, 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 22, 2026
10	Sagesure	Indirect evidence	Jersey City, NJ, United StatesHQ checked Sep 22, 2026	1,001-5,000	877 contacts →
	Indirect evidence “SageSure is building the world’s leading catastrophe-risk franchise.” Source: RevenueBase Database · checked Sep 22, 2026
11	Argo Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	501-1,000	851 contacts →
	Indirect evidence “Argo Group is a U.S-focused underwriter of specialty insurance products in the property and casualty market.” Source: RevenueBase Database · checked Sep 22, 2026
12	Davies North America	Indirect evidence	Lakewood Ranch, FL, United StatesHQ checked Sep 22, 2026	5,001-10,000	757 contacts →
	Indirect evidence “Davies is a specialist professional services and technology firm delivering comprehensive insurance and risk solutions to clients across the globe.” Source: RevenueBase Database · checked Sep 22, 2026
13	Applied Underwriters	Indirect evidence	Omaha, NE, United StatesHQ checked Sep 22, 2026	1,001-5,000	680 contacts →
	Indirect evidence “Applied Underwriters® is a global risk services firm helping business and people manage uncertainty through its business services, insurance, and reinsurance solutions.” Source: RevenueBase Database · checked Sep 22, 2026
14	Hudson Insurance Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 22, 2026	201-500	675 contacts →
	Indirect evidence “Headquartered in New York City with offices throughout the U.S.” Source: RevenueBase Database · checked Sep 22, 2026
15	Core Specialty Insurance Holdings, INC	Indirect evidence	Cincinnati, OH, United StatesHQ checked Sep 22, 2026	1,001-5,000	635 contacts →
	Indirect evidence “Core Specialty, through its subsidiary insurers, offers a diversified range of property, casualty, and marine insurance products for small to mid-sized businesses.” Source: RevenueBase Database · checked Sep 22, 2026
16	Admiral Insurance Group A Berkley Company	Indirect evidence	Moorestown, NJ, United StatesHQ checked Sep 22, 2026	201-500	614 contacts →
	Indirect evidence “Admiral Insurance Group, a Berkley company, provides excess and surplus (E&S) lines of commercial insurance exclusively through our nationwide network of wholesale brokers.” Source: RevenueBase Database · checked Sep 22, 2026
17	Aegis General Insurance Agency	Indirect evidence	Harrisburg, PA, United StatesHQ checked Sep 22, 2026	201-500	592 contacts →
	Indirect evidence “Aegis General Insurance Agency (AGIA) is a Managing General Agency and full-service Program Administrator.” Source: RevenueBase Database · checked Sep 22, 2026
18	Skyward Specialty Insurance	Indirect evidence	Houston, TX, United StatesHQ checked Sep 22, 2026	501-1,000	561 contacts →
	Indirect evidence “Skyward Specialty is a rapidly growing and innovative specialty insurance company, delivering commercial P&C products and solutions on a non-admitted and admitted basis.” Source: RevenueBase Database · checked Sep 22, 2026
19	Fortegra	Partial evidence	Jacksonville, FL, United StatesHQ checked Sep 22, 2026	501-1,000	553 contacts →
	Partial evidence “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.” Source: RevenueBase Database · checked Sep 22, 2026
20	Foundation Risk Partners	Indirect evidence	Ormond Beach, FL, United StatesHQ checked Sep 22, 2026	1,001-5,000	531 contacts →
	Indirect evidence “Foundation Risk Partners is one of the fastest growing insurance brokerage and consulting firms in the United States.” Source: RevenueBase Database · checked Sep 22, 2026
21	Bass Underwriters	Indirect evidence	Plantation, FL, United StatesHQ checked Sep 22, 2026	501-1,000	494 contacts →
	Indirect evidence “As an MGA, we offer a great deal of specialty products with professional service.” Source: RevenueBase Database · checked Sep 22, 2026
22	Brown & Riding	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 22, 2026	201-500	469 contacts →
	Indirect evidence “Brown & Riding was founded in 1980 and is one of the largest wholesale insurance brokerage firms in the United States.” Source: RevenueBase Database · checked Sep 22, 2026
23	Hull & Company	Indirect evidence	Stockton, CA, United StatesHQ checked Sep 22, 2026	201-500	457 contacts →
	Indirect evidence “Hull & Company is a wholesale insurance broker and managing general agency.” Source: RevenueBase Database · checked Sep 22, 2026
24	Rsui Group, INC	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 22, 2026	201-500	442 contacts →
	Indirect evidence “RSUI is a leading underwriter of wholesale specialty insurance.” Source: RevenueBase Database · checked Sep 22, 2026
25	Jencap	Partial evidence	New York, NY, United StatesHQ checked Sep 22, 2026	1,001-5,000	428 contacts →
	Partial evidence “Jencap provides retail agents with carrier exclusivity, underwriting mastery, and unparalleled customer service.” Source: RevenueBase Database · checked Sep 22, 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: underwriting management 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 underwriting management companies.
Partial evidence: Its own public description names part of underwriting management companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name underwriting management 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 978 underwriting management companies based in the United States

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Underwriting management companies based in the United States at a glance

As of Sep 22, 2026

53.1%Verified-email coverage

75.8Average contacts per company

11-50Median size (employees)

5.1%Largest-city concentration · New York

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

296

11-50

386

51-200

172

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 978 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 underwriting management 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 “underwriting management 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 underwriting management 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 underwriting management 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, 39,314 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 22, 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.

Underwriting management 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 underwriting management 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 underwriting management companies are there based in the United States?

RevenueBase identified 978 underwriting management 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?

Lockton, headquartered in Dallas, tops this list with the largest team on record.

Which city has the most underwriting management companies?

New York leads with 50 headquartered companies, followed by Chicago (32) and Dallas (26).

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 39,314 verified decision-maker contacts tracked across these 978 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 22, 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.