Company lists · Data refreshed September 2026

Top 25 Umbrella insurance underwriters based in the United States

RevenueBase identified 167 company matches for umbrella insurance underwriters associated with the United States as of September 2026 and tracks 2,418 professional contacts across them, including 917 with verified work emails. Houston is the largest hub.

This list covers company matches for umbrella 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 19, 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 19, 2026 How this list was built
167Companies
2,418Contacts tracked
917Verified emails
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The 25 largest umbrella insurance underwriters based in the United States

Ranked by team size
Top 25 of 167 company matches for umbrella insurance underwriters based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 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 matchGoldsboro, NC, United StatesHQ recorded Sep 19, 2026201-500335 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 19, 2026 · View company records in RevenueBase
2Exact matchJacksonville, FL, United StatesHQ recorded Sep 19, 202651-200245 contacts →

Exact match

“As a division of Ryan Specialty Underwriting Managers, US Assure distributes, underwrites and services construction and property insurance products across the U.S.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3Exact matchGlen Allen, VA, United StatesHQ recorded Sep 19, 202651-200110 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 · Sep 19, 2026 · View company records in RevenueBase
4Exact matchSpokane, WA, United StatesHQ recorded Sep 19, 202651-20071 contacts →

Exact match

“Cochrane & Company was established in 1960 in Spokane, Washington.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5Exact matchNorwalk, CT, United StatesHQ recorded Sep 19, 202651-20051 contacts →

Exact match

“Shoff Darby Insurance Agency offers a variety of insurance products to meet the diverse needs of both our Personal and Commerical customers.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6Exact matchNew York, NY, United StatesHQ recorded Sep 19, 202651-20046 contacts →

Exact match

“Berkley Financial Specialists is dedicated to providing customized, comprehensive insurance solutions and outstanding personalized service to financial institutions and insurance…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7Exact matchSan Francisco, CA, United StatesHQ recorded Sep 19, 202651-20044 contacts →

Exact match

“Deans & Homer was established in 1856 and is one of the oldest continuously operating companies in California.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8Exact matchShreveport, LA, United StatesHQ recorded Sep 19, 202651-20042 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 19, 2026 · View company records in RevenueBase
9Exact matchWestbrook, CT, United StatesHQ recorded Sep 19, 202651-20042 contacts →

Exact match

“Our history dates back to the early 1990’s, when Maritime General Agency and Marine MGA were founded.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10Exact matchCypress, TX, United StatesHQ recorded Sep 19, 202611-5033 contacts →

Exact match

“We are a Managing General Underwriter (MGU) company providing high limits and innovative products to our clients.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11Exact matchMiami, FL, United StatesHQ recorded Sep 19, 202611-5028 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 19, 2026 · View company records in RevenueBase
12Exact matchMedford, MA, United StatesHQ recorded Sep 19, 202611-5026 contacts →

Exact match

“Risman Insurance Agencies is based in Massachusetts with multiple offices across the state.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13Exact matchMargate, FL, United StatesHQ recorded Sep 19, 202611-5024 contacts →

Exact match

“Since 1993, Triton has been providing Homeowners insurance, Auto insurance, Boat insurance, Business & Liability insurance, Workers’ Compensation insurance, Flood Insurance…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14Exact matchOverland Park, KS, United StatesHQ recorded Sep 19, 202611-5020 contacts →

Exact match

“Alta Risk is an underwriting manager for specialty insurance products.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15Exact matchChicago, IL, United StatesHQ recorded Sep 19, 2026501-1,00019 contacts →

Exact match

“Simply stated, RT Binding Authority’s underwriters are here to provide a solution to your clients’ insurance needs.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16Exact matchAustin, TX, United StatesHQ recorded Sep 19, 202611-5017 contacts →

Exact match

“Welcome to Monoline, where we’re igniting a new chapter in personal insurance wholesaling.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17Exact matchEmeryville, CA, United StatesHQ recorded Sep 19, 202611-5015 contacts →

Exact match

“Provider of online standalone personal umbrella insurance policies, Admitted, rated A XV by A.M.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18Exact matchSavannah, GA, United StatesHQ recorded Sep 19, 20261-1015 contacts →

Exact match

“Property and Casualty insurance.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19Exact matchBellingham, WA, United StatesHQ recorded Sep 19, 202611-5014 contacts →

Exact match

“Bellingham Underwriters, a Division of Arrowhead General Insurance Agency, Inc.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20Exact matchGilbert, AZ, United StatesHQ recorded Sep 19, 20261-1013 contacts →

Exact match

“I help East Valley families protect their assets with comprehensive, multi-policy insurance strategies, not one-off coverage patches.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21Exact matchBoston, MA, United StatesHQ recorded Sep 19, 202611-5012 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 19, 2026 · View company records in RevenueBase
22Exact matchSan Diego, CA, United StatesHQ recorded Sep 19, 202611-5012 contacts →

Exact match

“As one of the leading underwriters of property catastrophe insurance products in the United States.”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23Exact matchDanville, CA, United StatesHQ recorded Sep 19, 2026n/a12 contacts →

Exact match

“Multi-line Insurance Brokerage specializing in: Homeowners insurance Auto insurance Umbrella insurance Flood insurance Earthquake insurance Tow truck insurance Gas Station…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24Exact matchKalamazoo, MI, United StatesHQ recorded Sep 19, 202611-5010 contacts →

Exact match

“Owned and operated by Ron Jackson and his family for over 60 years, we've built our reputation on personal service, quality coverage and competitive prices for just about any type…”

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25Exact matchWaller, TX, United StatesHQ recorded Sep 19, 202611-5010 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

Showing 25 of 167 umbrella insurance underwriters based in the United States

See the full list, filter by size, metro and specialty, and access 917 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Umbrella insurance underwriters based in the United States at a glance

As of Sep 19, 2026
37.9%Verified-email coverage
14.5Average contacts per company
1-10Median size (employees)
3.6%Largest-city concentration · Houston
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
103
11-50
41
51-200
15
201-500
3
501-1,000
1
1,001-5,000
1
10001+
1

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 167 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 “umbrella 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 917 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 19, 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 “umbrella insurance underwriters”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 167 company matches for umbrella 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?

Atlantic Casualty Insurance CO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most umbrella insurance underwriters?

Houston leads with 6 company records, followed by Austin (3) and New York (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 917 professional contacts with verified work emails tracked across these 167 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 19, 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.