Company lists · Data refreshed September 2026
Top 25 Surety reinsurance underwriters worldwide
RevenueBase identified 540 surety reinsurance underwriters worldwide as of September 2026 and tracks 14,826 professional contacts across them, including 6,487 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.
This list covers surety reinsurance underwriters worldwide, 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 18, 2026. Country and city lists for surety reinsurance underwriters follow the table.
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.
The 25 largest surety reinsurance underwriters worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,386 contacts → | ||||
Partial evidence “RLI is a U.S-based specialty insurer that serves niche property, casualty and surety markets.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,145 contacts → | ||||
Partial 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 18, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,002 contacts → | ||||
Partial evidence “Ascot Group is a global specialty insurance and reinsurance group with a record of underwriting excellence and superior claims service.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 4 | 578 contacts → | ||||
Partial evidence “Liberty Mutual is the largest provider of surety & guarantees in the U.S.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 5 | 510 contacts → | ||||
Indirect evidence “As one of the largest privately-held insurance agencies, Propel Insurance, an Alera Group company, is an expert at helping clients find ways to move their business forward.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 6 | 411 contacts → | ||||
Indirect evidence “Grupo Financiero Aserta es el único grupo especializado en fianzas con Afianzadora Insurgentes, Afianzadora Aserta y Afianzadora Punto Aserta y, en el 2014 se integró al grupo…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 7 | 273 contacts → | ||||
Indirect evidence “Great Place To Work Certified™ | Best Places To Work in Insurance 2024 | Rated A “Excellent” by AM Best | 32+ years strong | Competitive salaries and benefits | Expertise and…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 8 | 270 contacts → | ||||
Partial evidence “For more than 45 years, BMB has brought our customers a commitment to excellence, innovation, and service in the complex world of commercial insurance products, surety bonds…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 9 | 258 contacts → | ||||
Partial evidence “Common Sense Underwriting - First Class Experiences Merchants Bonding Company specializes in contract and commercial surety bonds, with an “A” (Excellent) or higher rating from AM…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 10 | 239 contacts → | ||||
Strong evidence “Old Republic Surety Company, headquartered in Brookfield, Wisconsin, ranks among the nation's top underwriters of contract performance and payment bonds, miscellaneous surety, and…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 11 | 216 contacts → | ||||
Partial evidence “American Global is one of the largest privately held insurance and surety brokerage firms in North America.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 12 | 193 contacts → | ||||
Partial evidence “We write a wide variety of complex transactional and specialty casualty and reinsurance risks, creating customized responsive underwriting solutions for a range of exposures.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 13 | 172 contacts → | ||||
Indirect evidence “Liberty Fianzas cuenta con colaboradores quienes se destacan por su gran profesionalismo y experiencia en el sector afianzador, ofreciendo un servicio oportuno y de alta calidad…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 14 | 149 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 15 | 146 contacts → | ||||
Indirect evidence “Among many advantages enjoyed by clients of VTC Insurance Group is the simple convenience of having a single source for every risk management need, regardless of scope or scale.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 16 | 133 contacts → | ||||
Partial evidence “American Agricultural Insurance Company (AmericanAg®) stands out from the marketplace as a provider of reinsurance services across the insurance spectrum with a growing global…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 17 | 123 contacts → | ||||
Indirect evidence “When we opened the doors at our first location in Vancouver in 1981, our focus was on the construction industry.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 18 | 102 contacts → | ||||
Indirect evidence “IIABA 2021 Best Practices Agency - HMS INSURANCE ASSOCIATES, INC.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 19 | 101 contacts → | ||||
Indirect evidence “TSIB was founded in 2005 as a subsidiary of Hochtief USA.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 20 | 96 contacts → | ||||
Partial evidence “BERKLEY SURETY is a highly professional, service-oriented surety underwriting management company, providing a full spectrum of bonds for contract, environmental, and commercial…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 21 | 80 contacts → | ||||
Partial evidence “Since 2015, Old Republic Alternative Markets has focused on delivering insurance and reinsurance solutions for complex risk environments, backed by the strength and stability of…” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 22 | 79 contacts → | ||||
Indirect evidence “At Iron Insurance Partners, LLC we are proud to be one of the largest providers of risk management and risk transfer services in the Midwest.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 23 | 76 contacts → | ||||
Indirect evidence “The Miller Group was founded in 1961 by Robert E.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 24 | 76 contacts → | ||||
Indirect evidence “En 1996 iniciamos un camino en el mundo de los seguros y las fianzas, impulsado por un profundo compromiso de servicio y una pasión innata por nuestra profesión.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
| 25 | 74 contacts → | ||||
Indirect evidence “Seguro adaptado a la realidad de tu negocio.” Source: RevenueBase Database · checked Sep 18, 2026Thanks. The Data Team will review it. | |||||
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: surety reinsurance underwriters. 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 surety reinsurance underwriters.
- Partial evidence
- Its own public description names part of surety reinsurance underwriters, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name surety reinsurance underwriters. 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 540 surety reinsurance underwriters worldwide
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Surety reinsurance underwriters worldwide at a glance
As of Sep 18, 2026Companies by employee count
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 surety reinsurance underwriters, 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.
- Coverage
- 6 countries, largest first: the United States, Mexico, Italy, the United Kingdom, Canada, France. Country and city lists for surety reinsurance underwriters are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “surety reinsurance underwriters”. 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 surety reinsurance underwriters), 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 surety reinsurance underwriters, and records with no verified work email.
- 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, 6,487 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 18, 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.
Surety reinsurance underwriters by location
6 lists · largest firstEvery Surety reinsurance underwriters list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Surety reinsurance underwriters based in the United States298
- Surety reinsurance underwriters based in Mexico107
- Surety reinsurance underwriters based in Italy41
- Surety reinsurance underwriters based in the United Kingdom36
- Surety reinsurance underwriters based in Canada29
- Surety reinsurance underwriters based in France29
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 surety reinsurance underwriters, 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 surety reinsurance underwriters are there worldwide?
RevenueBase identified 540 surety reinsurance underwriters worldwide 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?
RLI Insurance Company, headquartered in Peoria, tops this list with the largest team on record.
Which country has the most surety reinsurance underwriters?
The United States leads with 298 companies, followed by Mexico (107) and Italy (41). Every surety reinsurance underwriters list by country and city is linked on this page.
Which city has the most surety reinsurance underwriters?
London leads with 22 headquartered companies, followed by Ciudad De Mexico (16) and Paris (12).
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 6,487 verified decision-maker contacts tracked across these 540 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 18, 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.