Company lists · Data refreshed September 2026

Top 25 Reinsurance brokers based in the United States

RevenueBase identified 2,642 reinsurance brokers headquartered in the United States as of September 2026 and tracks 206,503 professional contacts across them, including 105,292 with verified work emails. Rolling Meadows is the largest hub.

This list covers reinsurance 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 17, 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 17, 2026 86% judged on-target in blind review
2,642Companies
206,503Contacts tracked
105,292Verified emails
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The 25 largest reinsurance brokers based in the United States

Ranked by team size
Top 25 of 2,642 reinsurance brokers based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to reinsurance 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 evidenceNew York, NY, United StatesHQ checked Sep 17, 202610001+15,852 contacts →

Indirect evidence

“We help our clients and colleagues grow, and our communities thrive, by protecting and promoting Possibility.”

Source: RevenueBase Database · checked Sep 17, 2026
2Indirect evidenceChicago, IL, United StatesHQ checked Sep 17, 202610001+14,217 contacts →

Indirect evidence

“Hi, we’re HUB.”

Source: RevenueBase Database · checked Sep 17, 2026
3Indirect evidenceDallas, TX, United StatesHQ checked Sep 17, 202610001+13,482 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
4Partial evidenceValhalla, NY, United StatesHQ checked Sep 17, 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 17, 2026
5Partial evidenceIrvine, CA, United StatesHQ checked Sep 17, 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 17, 2026
6Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 17, 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 17, 2026
7Indirect evidenceRolling Meadows, IL, United StatesHQ checked Sep 17, 202610001+4,282 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 17, 2026
8Partial evidenceChesterfield, MO, United StatesHQ checked Sep 17, 20261,001-5,0004,128 contacts →

Partial evidence

Reinsurance Group of America, Incorporated (NYSE: RGA) is a global industry leader specializing in life and health reinsurance and financial solutions that help clients…”

Source: RevenueBase Database · checked Sep 17, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 17, 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 17, 2026
10Partial evidenceWarren, NJ, United StatesHQ checked Sep 17, 20261,001-5,0003,411 contacts →

Partial evidence

“Everest Group, Ltd.(“Everest”) is a global underwriting leader providing best-in-class property, casualty, and specialty reinsurance and insurance solutions that address…”

Source: RevenueBase Database · checked Sep 17, 2026
11Indirect evidenceCharlotte, NC, United StatesHQ checked Sep 17, 20265,001-10,0002,959 contacts →

Indirect evidence

“CRC Group is all about progress.”

Source: RevenueBase Database · checked Sep 17, 2026
12Indirect evidenceChicago, IL, United StatesHQ checked Sep 17, 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 17, 2026
13Indirect evidenceTampa, FL, United StatesHQ checked Sep 17, 20261,001-5,0002,376 contacts →

Indirect evidence

“The Baldwin Group is a cohesive group of experts in business insurance, employee benefits, retirement planning, and all areas of private and personal insurance.”

Source: RevenueBase Database · checked Sep 17, 2026
14Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 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 17, 2026
15Indirect evidenceNew York, NY, United StatesHQ checked Sep 17, 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 17, 2026
16Indirect evidenceBoston, MA, United StatesHQ checked Sep 17, 20261,001-5,0001,799 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 17, 2026
17Indirect evidenceRolling Meadows, IL, United StatesHQ checked Sep 17, 20261,001-5,0001,646 contacts →

Indirect evidence

“At Risk Placement Services, we help you come through for your clients!”

Source: RevenueBase Database · checked Sep 17, 2026
18Partial evidenceStamford, CT, United StatesHQ checked Sep 17, 20261,001-5,0001,542 contacts →

Partial evidence

“Gen Re is a leading property/casualty and life/health reinsurance company.”

Source: RevenueBase Database · checked Sep 17, 2026
19Indirect evidenceWaukee, IA, United StatesHQ checked Sep 17, 2026501-1,0001,171 contacts →

Indirect evidence

“Independence isn’t just our structure, it’s our mindset.”

Source: RevenueBase Database · checked Sep 17, 2026
20Indirect evidenceCanoga Park, CA, United StatesHQ checked Sep 17, 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 17, 2026
21Indirect evidenceChicago, IL, United StatesHQ checked Sep 17, 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 17, 2026
22Partial evidenceSt Louis, MO, United StatesHQ checked Sep 17, 2026501-1,0001,008 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
23Partial evidenceDubuque, IA, United StatesHQ checked Sep 17, 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 17, 2026
24Partial evidenceRadnor, PA, United StatesHQ checked Sep 17, 20261,001-5,000930 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 17, 2026
25Indirect evidenceRichmond, VA, United StatesHQ checked Sep 17, 20261,001-5,000909 contacts →

Indirect evidence

“It's Personal.”

Source: RevenueBase Database · checked Sep 17, 2026

Showing 25 of 2,642 reinsurance brokers based in the United States

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Reinsurance brokers based in the United States at a glance

As of Sep 17, 2026
51.0%Verified-email coverage
78.2Average contacts per company
11-50Median size (employees)
6.1%Largest-city concentration · Rolling Meadows
Sep 17, 2026Page data refreshed

Companies by employee count

1-10
1,201
11-50
814
51-200
251
201-500
53
501-1,000
36
1,001-5,000
60
5,001-10,000
20
10001+
202

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 2,642 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 reinsurance 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 “reinsurance 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 reinsurance 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 reinsurance 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, 105,292 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 17, 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.

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 reinsurance 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 reinsurance brokers are there based in the United States?

RevenueBase identified 2,642 reinsurance 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?

MARSH, headquartered in New York, tops this list with the largest team on record.

Which city has the most reinsurance brokers?

Rolling Meadows leads with 161 headquartered companies, followed by New York (110) and Miami (46).

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 105,292 verified decision-maker contacts tracked across these 2,642 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 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 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.