Company lists · Data refreshed September 2026

Top 25 Excess and surplus brokers based in the United States

RevenueBase identified 1,431 excess and surplus brokers headquartered in the United States as of September 2026 and tracks 130,059 professional contacts across them, including 72,208 with verified work emails. New York is the largest hub.

This list covers excess and surplus brokers 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 20, 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 20, 2026 86% judged on-target in blind review
1,431Companies
130,059Contacts tracked
72,208Verified emails
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The 25 largest excess and surplus brokers based in the United States

Ranked by team size
Top 25 of 1,431 excess and surplus brokers based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to excess and surplus brokers: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceChicago, IL, United StatesHQ checked Sep 20, 202610001+14,217 contacts →

Indirect evidence

“Hi, we’re HUB.”

Source: RevenueBase Database · checked Sep 20, 2026
2Indirect evidenceDallas, TX, United StatesHQ checked Sep 20, 202610001+13,482 contacts →

Indirect evidence

“What makes Lockton stand apart is also what makes us better: independence.”

Source: RevenueBase Database · checked Sep 20, 2026
3Partial evidenceValhalla, NY, United StatesHQ checked Sep 20, 202610001+10,303 contacts →

Partial evidence

“USI is one of the largest insurance brokerage and consulting firms in the world, delivering property and casualty, employee benefits, personal risk, program and retirement…”

Source: RevenueBase Database · checked Sep 20, 2026
4Partial evidenceIrvine, CA, United StatesHQ checked Sep 20, 202610001+6,091 contacts →

Partial evidence

“Alliant Insurance Services is among the top 5 largest and fastest-growing insurance brokerage and consulting firms in the United States.”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 20, 20265,001-10,0004,926 contacts →

Indirect evidence

“Amwins is the largest wholesale distributor of specialty insurance products and services in the U.S.”

Source: RevenueBase Database · checked Sep 20, 2026
6Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 20261,001-5,0004,072 contacts →

Indirect evidence

“At Guy Carpenter, a Marsh business, we deliver a powerful combination of (re)insurance broking expertise, capital solutions, global analytics, advisory, and client support…”

Source: RevenueBase Database · checked Sep 20, 2026
7Indirect evidenceGlen Allen, VA, United StatesHQ checked Sep 20, 20261,001-5,0003,151 contacts →

Indirect 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 20, 2026
8Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 20, 20265,001-10,0002,959 contacts →

Indirect evidence

“CRC Group is all about progress.”

Source: RevenueBase Database · checked Sep 20, 2026
9Indirect evidenceChicago, IL, United StatesHQ checked Sep 20, 20261,001-5,0002,955 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 20, 2026
10Partial evidenceDenver, CO, United StatesHQ checked Sep 20, 20261,001-5,0002,484 contacts →

Partial evidence

“With over four decades of experience in the industry, IMA has become a trusted leader in commercial insurance, risk management, surety, and employee benefits brokerage and…”

Source: RevenueBase Database · checked Sep 20, 2026
11Indirect evidenceBoston, MA, United StatesHQ checked Sep 20, 20265,001-10,0002,206 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 20, 2026
12Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 202610001+1,883 contacts →

Indirect evidence

“At QBE we’re driven by our purpose of enabling a more resilient future.”

Source: RevenueBase Database · checked Sep 20, 2026
13Partial evidenceLongwood, FL, United StatesHQ checked Sep 20, 20261,001-5,0001,431 contacts →

Partial evidence

“Insurance Office of America (IOA) is the fourth largest privately held insurance brokerage in the United States.”

Source: RevenueBase Database · checked Sep 20, 2026
14Indirect evidencePeoria, IL, United StatesHQ checked Sep 20, 20261,001-5,0001,386 contacts →

Indirect evidence

“RLI is a U.S-based specialty insurer that serves niche property, casualty and surety markets.”

Source: RevenueBase Database · checked Sep 20, 2026
15Partial evidenceToledo, OH, United StatesHQ checked Sep 20, 20261,001-5,0001,258 contacts →

Partial evidence

“A multi-year winner of Best Places to Work in Insurance (2009-2025), Hylant is a full-service insurance brokerage with offices in Florida, Georgia, Illinois, Indiana, Michigan…”

Source: RevenueBase Database · checked Sep 20, 2026
16Indirect evidenceCanoga Park, CA, United StatesHQ checked Sep 20, 2026n/a1,147 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 20, 2026
17Indirect evidenceMiddleton, WI, United StatesHQ checked Sep 20, 2026201-5001,145 contacts →

Indirect 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 20, 2026
18Indirect evidenceChicago, IL, United StatesHQ checked Sep 20, 20265,001-10,0001,079 contacts →

Indirect 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 20, 2026
19Indirect evidenceSt Louis, MO, United StatesHQ checked Sep 20, 2026501-1,0001,008 contacts →

Indirect evidence

“Safety National is a leading specialty insurance and reinsurance provider.”

Source: RevenueBase Database · checked Sep 20, 2026
20Partial evidenceDubuque, IA, United StatesHQ checked Sep 20, 20261,001-5,000955 contacts →

Partial evidence

“Cottingham & Butler is the 3rd largest privately and independently held insurance broker in the U.S.”

Source: RevenueBase Database · checked Sep 20, 2026
21Partial evidenceRadnor, PA, United StatesHQ checked Sep 20, 20261,001-5,000930 contacts →

Partial evidence

“Willis Group Holdings plc is a leading global insurance broker.”

Source: RevenueBase Database · checked Sep 20, 2026
22Indirect evidenceRichmond, VA, United StatesHQ checked Sep 20, 20261,001-5,000909 contacts →

Indirect evidence

“It's Personal.”

Source: RevenueBase Database · checked Sep 20, 2026
23Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 2026501-1,000851 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 20, 2026
24Strong evidenceWilkes-barre, PA, United StatesHQ checked Sep 20, 20261,001-5,000843 contacts →

Strong evidence

“Rated A+ Superior by AM Best (as of 8/13/25), Berkshire Hathaway GUARD Insurance Companies provides Property & Casualty insurance including Excess & Surplus lines.”

Source: RevenueBase Database · checked Sep 20, 2026
25Indirect evidenceNew York, NY, United StatesHQ checked Sep 20, 2026201-500693 contacts →

Indirect evidence

“MSIG USA is the partner that businesses rely on for creative, customized insurance solutions.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 1,431 excess and surplus brokers based in the United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 72,208 reachable decision-makers.

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Excess and surplus brokers based in the United States at a glance

As of Sep 20, 2026
55.5%Verified-email coverage
90.9Average contacts per company
11-50Median size (employees)
4.3%Largest-city concentration · New York
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
577
11-50
489
51-200
174
201-500
65
501-1,000
27
1,001-5,000
41
5,001-10,000
8
10001+
48

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 1,431 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 excess and surplus brokers, 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 “excess and surplus brokers”. 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 excess and surplus brokers), 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 excess and surplus brokers, 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, 72,208 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 20, 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.

Excess and surplus brokers 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 excess and surplus brokers, 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 excess and surplus brokers are there based in the United States?

RevenueBase identified 1,431 excess and surplus brokers 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?

HUB International, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most excess and surplus brokers?

New York leads with 62 headquartered companies, followed by Rolling Meadows (34) and Dallas (28).

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 72,208 verified decision-maker contacts tracked across these 1,431 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 20, 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.