Company lists · Data refreshed September 2026
Top 25 Excess and surplus insurance companies worldwide
RevenueBase identified 231 excess and surplus insurance companies worldwide as of September 2026 and tracks 24,892 professional contacts across them, including 12,913 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.
This list covers excess and surplus insurance companies 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 16, 2026. Country and city lists for excess and surplus insurance companies 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 excess and surplus insurance companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,151 contacts → | ||||
Partial 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 16, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,564 contacts → | ||||
Indirect evidence “We are a specialty insurer with more than three decades of experience in providing clients with the highest standards of underwriting and claims service worldwide.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,883 contacts → | ||||
Indirect evidence “At QBE we’re driven by our purpose of enabling a more resilient future.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,386 contacts → | ||||
Indirect evidence “RLI is a U.S-based specialty insurer that serves niche property, casualty and surety markets.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,113 contacts → | ||||
Partial evidence “American Modern provides insurance solutions for customers who need coverage not readily found in the general market.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,002 contacts → | ||||
Strong 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 16, 2026Thanks. The Data Team will review it. | |||||
| 7 | 851 contacts → | ||||
Partial evidence “Argo Group is a U.S-focused underwriter of specialty insurance products in the property and casualty market.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 8 | 843 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 16, 2026Thanks. The Data Team will review it. | |||||
| 9 | 653 contacts → | ||||
Strong evidence “Kinsale Insurance is an excess and surplus (E&S) lines insurance company located in Richmond, VA specializing in hard-to-place property, casualty, and specialty risks.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 10 | 614 contacts → | ||||
Strong 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 16, 2026Thanks. The Data Team will review it. | |||||
| 11 | 553 contacts → | ||||
Indirect 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 16, 2026Thanks. The Data Team will review it. | |||||
| 12 | 428 contacts → | ||||
Indirect evidence “Jencap provides retail agents with carrier exclusivity, underwriting mastery, and unparalleled customer service.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 13 | 409 contacts → | ||||
Partial evidence “Society Insurance has been a leading niche insurance carrier since 1915.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 14 | 377 contacts → | ||||
Partial evidence “Seneca Insurance Company is a Specialty Property and Casualty Insurance company with thirteen offices across the U.S.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 15 | 367 contacts → | ||||
Indirect evidence “Navigators, a brand of The Hartford is a market-leading provider of E&S solutions.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 16 | 363 contacts → | ||||
Strong evidence “About Us Westchester is one of the largest and most diverse excess and surplus lines commercial property and casualty insurance companies in the United States.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 17 | 344 contacts → | ||||
Indirect evidence “Ironshore, a Liberty Mutual Company, is dedicated to the wholesale market.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 18 | 300 contacts → | ||||
Indirect evidence “GBLI | Global Indemnity provides specialty property and casualty coverage for a wide range of markets-from small business, manufactured homes, and vacant property to agriculture…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 19 | 263 contacts → | ||||
Strong evidence “Prime Insurance Company is an excess and surplus lines insurance carrier that specializes in providing solutions for hard-to-place and declined risks.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 20 | 232 contacts → | ||||
Indirect evidence “Arlington/Roe was founded in 1964 by Francis Roe, father of president and owner, James A.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 21 | 216 contacts → | ||||
Partial evidence “Richmond National is a specialty property & casualty insurance company focused on providing insurance to small and mid-size businesses that are unable to find coverage in the…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 22 | 205 contacts → | ||||
Strong evidence “GenStar Insurance Services, LLC is a premier provider of excess, surplus, and specialty property and casualty insurance written on General Star Indemnity Company (non-admitted)…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 23 | 192 contacts → | ||||
Indirect evidence “Combining state-of-the-art technology solutions with a total, customer-centered commitment to service, Ategrity empowers streamlined decision-making with easy, responsive…” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 24 | 191 contacts → | ||||
Indirect evidence “McNeil & Co.| We Are Who We Insure McNeil & Co.” Source: RevenueBase Database · checked Sep 16, 2026Thanks. The Data Team will review it. | |||||
| 25 | 191 contacts → | ||||
Strong evidence “Midwest Employers Casualty (MEC) is exclusively focused on tailored workers’ compensation excess insurance products that meet the unique needs of individual employers, groups and…” Source: RevenueBase Database · checked Sep 16, 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: excess and surplus insurance 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 excess and surplus insurance companies.
- Partial evidence
- Its own public description names part of excess and surplus insurance companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name excess and surplus insurance 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 231 excess and surplus insurance companies worldwide
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Excess and surplus insurance companies worldwide at a glance
As of Sep 16, 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 excess and surplus insurance 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.
- Coverage
- 2 countries, largest first: the United States, the United Kingdom. Country and city lists for excess and surplus insurance companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “excess and surplus insurance 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 excess and surplus insurance 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 excess and surplus insurance companies, 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, 12,913 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 16, 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 insurance companies by location
2 lists · largest firstEvery Excess and surplus insurance companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 insurance 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 excess and surplus insurance companies are there worldwide?
RevenueBase identified 231 excess and surplus insurance companies 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?
Markel, headquartered in Glen Allen, tops this list with the largest team on record.
Which country has the most excess and surplus insurance companies?
The United States leads with 204 companies, followed by the United Kingdom (27). Every excess and surplus insurance companies list by country and city is linked on this page.
Which city has the most excess and surplus insurance companies?
London leads with 16 headquartered companies, followed by New York (12) and Houston (9).
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 12,913 verified decision-maker contacts tracked across these 231 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 16, 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.
More company lists
Company intelligence · public preview
Top 25 excess and surplus insurance companies worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 231 matching company records for excess and surplus insurance companies worldwide, with 24,892 tracked contacts and 12,913 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 excess and surplus insurance companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Markelmarkel.comHQ: Glen Allen, VA, United StatesReported employees: 1,001-5,000 | Glen Allen, VA, United States | 1,001-5,000 | Exact match | 3,151 contacts → |
“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…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Beazleybeazley.comHQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,564 contacts → |
“We are a specialty insurer with more than three decades of experience in providing clients with the highest standards of underwriting and claims service worldwide.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  QBE North Americaqbe.comHQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,883 contacts → |
“At QBE we’re driven by our purpose of enabling a more resilient future.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | RLI Insurance Companyrlicorp.com HQ: Peoria, IL, United StatesReported employees: 1,001-5,000 | Peoria, IL, United States | 1,001-5,000 | Exact match | 1,386 contacts → |
“RLI is a U.S-based specialty insurer that serves niche property, casualty and surety markets.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  American Modern Insurance Groupamig.comHQ: Cincinnati, OH, United StatesReported employees: 1,001-5,000 | Cincinnati, OH, United States | 1,001-5,000 | Exact match | 1,113 contacts → |
“American Modern provides insurance solutions for customers who need coverage not readily found in the general market.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Ascot Groupascotgroup.comHQ: London, BermudaReported employees: 1,001-5,000 | London, Bermuda | 1,001-5,000 | Exact match | 1,002 contacts → |
“Ascot Group is a global specialty insurance and reinsurance group with a record of underwriting excellence and superior claims service.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Argo Groupargogroup.com HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 851 contacts → |
“Argo Group is a U.S-focused underwriter of specialty insurance products in the property and casualty market.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: Wilkes-barre, PA, United StatesReported employees: 1,001-5,000 | Wilkes-barre, PA, United States | 1,001-5,000 | Exact match | 843 contacts → |
“Rated A+ Superior by AM Best (as of 8/13/25), Berkshire Hathaway GUARD Insurance Companies provides Property & Casualty insurance including Excess & Surplus lines.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Kinsale Insurancekinsaleins.com HQ: Richmond, VA, United StatesReported employees: 501-1,000 | Richmond, VA, United States | 501-1,000 | Exact match | 653 contacts → |
“Kinsale Insurance is an excess and surplus (E&S) lines insurance company located in Richmond, VA specializing in hard-to-place property, casualty, and specialty risks.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Admiral Insurance Group A Berkley Companyadmiralins.comHQ: Moorestown, NJ, United StatesReported employees: 201-500 | Moorestown, NJ, United States | 201-500 | Exact match | 614 contacts → |
“Admiral Insurance Group, a Berkley company, provides excess and surplus (E&S) lines of commercial insurance exclusively through our nationwide network of wholesale brokers.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Fortegrafortegra.comHQ: Jacksonville, FL, United StatesReported employees: 501-1,000 | Jacksonville, FL, United States | 501-1,000 | Exact match | 553 contacts → |
“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.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Jencapjencapgroup.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 428 contacts → |
“Jencap provides retail agents with carrier exclusivity, underwriting mastery, and unparalleled customer service.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Society Insurancesocietyinsurance.comHQ: Fond Du Lac, WI, United StatesReported employees: 201-500 | Fond Du Lac, WI, United States | 201-500 | Exact match | 409 contacts → |
“Society Insurance has been a leading niche insurance carrier since 1915.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Seneca Insurance Companysenecainsurance.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 377 contacts → |
“Seneca Insurance Company is a Specialty Property and Casualty Insurance company with thirteen offices across the U.S.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Navigators, A Brand Of The Hartfordthehartford.com HQ: Hartford, CT, United StatesReported employees: 10001+ | Hartford, CT, United States | 10001+ | Exact match | 367 contacts → |
“Navigators, a brand of The Hartford is a market-leading provider of E&S solutions.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Westchester, A Chubb Companywestchester.com HQ: Alpharetta, GA, United StatesReported employees: 501-1,000 | Alpharetta, GA, United States | 501-1,000 | Exact match | 363 contacts → |
“About Us Westchester is one of the largest and most diverse excess and surplus lines commercial property and casualty insurance companies in the United States.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Ironshore Insuranceironshore.com HQ: NY, United StatesReported employees: 1,001-5,000 | NY, United States | 1,001-5,000 | Exact match | 344 contacts → |
“Ironshore, a Liberty Mutual Company, is dedicated to the wholesale market.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Gbli Global Indemnitygbli.comHQ: Bala Cynwyd, PA, United StatesReported employees: 201-500 | Bala Cynwyd, PA, United States | 201-500 | Exact match | 300 contacts → |
“GBLI | Global Indemnity provides specialty property and casualty coverage for a wide range of markets-from small business, manufactured homes, and vacant property to agriculture…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Prime Insurance Companyprimeis.com HQ: Sandy, UT, United StatesReported employees: 51-200 | Sandy, UT, United States | 51-200 | Exact match | 263 contacts → |
“Prime Insurance Company is an excess and surplus lines insurance carrier that specializes in providing solutions for hard-to-place and declined risks.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Arlington ROEarlingtonroe.comHQ: Indianapolis, IN, United StatesReported employees: 201-500 | Indianapolis, IN, United States | 201-500 | Exact match | 232 contacts → |
“Arlington/Roe was founded in 1964 by Francis Roe, father of president and owner, James A.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Richmond Nationalrichmondnational.com HQ: Glen Allen, VA, United StatesReported employees: 51-200 | Glen Allen, VA, United States | 51-200 | Exact match | 216 contacts → |
“Richmond National is a specialty property & casualty insurance company focused on providing insurance to small and mid-size businesses that are unable to find coverage in the…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Genstar Insurance Services, LLCgeneralstar.com HQ: Stamford, CT, United StatesReported employees: 51-200 | Stamford, CT, United States | 51-200 | Exact match | 205 contacts → |
“GenStar Insurance Services, LLC is a premier provider of excess, surplus, and specialty property and casualty insurance written on General Star Indemnity Company (non-admitted)…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Ategrity Specialty Insurance Companyategrity.comHQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 192 contacts → |
“Combining state-of-the-art technology solutions with a total, customer-centered commitment to service, Ategrity empowers streamlined decision-making with easy, responsive…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Mcneil & COmcneilandcompany.comHQ: Cortland, NY, United StatesReported employees: 51-200 | Cortland, NY, United States | 51-200 | Exact match | 191 contacts → |
“McNeil & Co.| We Are Who We Insure McNeil & Co.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Midwest Employers Casualty A Berkley Companymecasualty.com HQ: Chesterfield, MO, United StatesReported employees: 201-500 | Chesterfield, MO, United States | 201-500 | Exact match | 191 contacts → |
“Midwest Employers Casualty (MEC) is exclusively focused on tailored workers’ compensation excess insurance products that meet the unique needs of individual employers, groups and…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 231 company matches
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Excess and surplus insurance companies: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
230 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Excess and surplus insurance companies by location
2 lists · largest firstEvery Excess and surplus insurance companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for excess and surplus insurance companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many excess and surplus insurance companies did RevenueBase find worldwide?
The saved snapshot records 231 matching company records, 24,892 tracked contacts and 12,913 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 excess and surplus insurance companies worldwide. Snapshot: September 16, 2026. https://revenuebase.ai/companies/browse/excess-and-surplus-insurance-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 excess and surplus insurance companies worldwide
RevenueBase records 231 matching company records for excess and surplus insurance companies worldwide, with 24,892 tracked contacts and 12,913 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 16, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 excess and surplus insurance companies worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Markelmarkel.com HQ: Glen Allen, VA, United StatesReported employees: 1,001-5,000 | Glen Allen, VA, United States | 1,001-5,000 | Exact match | 3,151 contacts → |
“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…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Beazleybeazley.com HQ: London, United KingdomReported employees: 1,001-5,000 | London, United Kingdom | 1,001-5,000 | Exact match | 2,564 contacts → |
“We are a specialty insurer with more than three decades of experience in providing clients with the highest standards of underwriting and claims service worldwide.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | QBE North Americaqbe.com HQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,883 contacts → |
“At QBE we’re driven by our purpose of enabling a more resilient future.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | RLI Insurance Companyrlicorp.com HQ: Peoria, IL, United StatesReported employees: 1,001-5,000 | Peoria, IL, United States | 1,001-5,000 | Exact match | 1,386 contacts → |
“RLI is a U.S-based specialty insurer that serves niche property, casualty and surety markets.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | American Modern Insurance Groupamig.com HQ: Cincinnati, OH, United StatesReported employees: 1,001-5,000 | Cincinnati, OH, United States | 1,001-5,000 | Exact match | 1,113 contacts → |
“American Modern provides insurance solutions for customers who need coverage not readily found in the general market.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Ascot Groupascotgroup.com HQ: London, BermudaReported employees: 1,001-5,000 | London, Bermuda | 1,001-5,000 | Exact match | 1,002 contacts → |
“Ascot Group is a global specialty insurance and reinsurance group with a record of underwriting excellence and superior claims service.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Argo Groupargogroup.com HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 851 contacts → |
“Argo Group is a U.S-focused underwriter of specialty insurance products in the property and casualty market.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | HQ: Wilkes-barre, PA, United StatesReported employees: 1,001-5,000 | Wilkes-barre, PA, United States | 1,001-5,000 | Exact match | 843 contacts → |
“Rated A+ Superior by AM Best (as of 8/13/25), Berkshire Hathaway GUARD Insurance Companies provides Property & Casualty insurance including Excess & Surplus lines.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Kinsale Insurancekinsaleins.com HQ: Richmond, VA, United StatesReported employees: 501-1,000 | Richmond, VA, United States | 501-1,000 | Exact match | 653 contacts → |
“Kinsale Insurance is an excess and surplus (E&S) lines insurance company located in Richmond, VA specializing in hard-to-place property, casualty, and specialty risks.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Admiral Insurance Group A Berkley Companyadmiralins.com HQ: Moorestown, NJ, United StatesReported employees: 201-500 | Moorestown, NJ, United States | 201-500 | Exact match | 614 contacts → |
“Admiral Insurance Group, a Berkley company, provides excess and surplus (E&S) lines of commercial insurance exclusively through our nationwide network of wholesale brokers.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Fortegrafortegra.com HQ: Jacksonville, FL, United StatesReported employees: 501-1,000 | Jacksonville, FL, United States | 501-1,000 | Exact match | 553 contacts → |
“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.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Jencapjencapgroup.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 428 contacts → |
“Jencap provides retail agents with carrier exclusivity, underwriting mastery, and unparalleled customer service.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Society Insurancesocietyinsurance.com HQ: Fond Du Lac, WI, United StatesReported employees: 201-500 | Fond Du Lac, WI, United States | 201-500 | Exact match | 409 contacts → |
“Society Insurance has been a leading niche insurance carrier since 1915.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Seneca Insurance Companysenecainsurance.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 377 contacts → |
“Seneca Insurance Company is a Specialty Property and Casualty Insurance company with thirteen offices across the U.S.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Navigators, A Brand Of The Hartfordthehartford.com HQ: Hartford, CT, United StatesReported employees: 10001+ | Hartford, CT, United States | 10001+ | Exact match | 367 contacts → |
“Navigators, a brand of The Hartford is a market-leading provider of E&S solutions.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Westchester, A Chubb Companywestchester.com HQ: Alpharetta, GA, United StatesReported employees: 501-1,000 | Alpharetta, GA, United States | 501-1,000 | Exact match | 363 contacts → |
“About Us Westchester is one of the largest and most diverse excess and surplus lines commercial property and casualty insurance companies in the United States.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Ironshore Insuranceironshore.com HQ: NY, United StatesReported employees: 1,001-5,000 | NY, United States | 1,001-5,000 | Exact match | 344 contacts → |
“Ironshore, a Liberty Mutual Company, is dedicated to the wholesale market.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Gbli Global Indemnitygbli.com HQ: Bala Cynwyd, PA, United StatesReported employees: 201-500 | Bala Cynwyd, PA, United States | 201-500 | Exact match | 300 contacts → |
“GBLI | Global Indemnity provides specialty property and casualty coverage for a wide range of markets-from small business, manufactured homes, and vacant property to agriculture…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Prime Insurance Companyprimeis.com HQ: Sandy, UT, United StatesReported employees: 51-200 | Sandy, UT, United States | 51-200 | Exact match | 263 contacts → |
“Prime Insurance Company is an excess and surplus lines insurance carrier that specializes in providing solutions for hard-to-place and declined risks.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Arlington ROEarlingtonroe.com HQ: Indianapolis, IN, United StatesReported employees: 201-500 | Indianapolis, IN, United States | 201-500 | Exact match | 232 contacts → |
“Arlington/Roe was founded in 1964 by Francis Roe, father of president and owner, James A.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Richmond Nationalrichmondnational.com HQ: Glen Allen, VA, United StatesReported employees: 51-200 | Glen Allen, VA, United States | 51-200 | Exact match | 216 contacts → |
“Richmond National is a specialty property & casualty insurance company focused on providing insurance to small and mid-size businesses that are unable to find coverage in the…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Genstar Insurance Services, LLCgeneralstar.com HQ: Stamford, CT, United StatesReported employees: 51-200 | Stamford, CT, United States | 51-200 | Exact match | 205 contacts → |
“GenStar Insurance Services, LLC is a premier provider of excess, surplus, and specialty property and casualty insurance written on General Star Indemnity Company (non-admitted)…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Ategrity Specialty Insurance Companyategrity.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 192 contacts → |
“Combining state-of-the-art technology solutions with a total, customer-centered commitment to service, Ategrity empowers streamlined decision-making with easy, responsive…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Mcneil & COmcneilandcompany.com HQ: Cortland, NY, United StatesReported employees: 51-200 | Cortland, NY, United States | 51-200 | Exact match | 191 contacts → |
“McNeil & Co.| We Are Who We Insure McNeil & Co.” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Midwest Employers Casualty A Berkley Companymecasualty.com HQ: Chesterfield, MO, United StatesReported employees: 201-500 | Chesterfield, MO, United States | 201-500 | Exact match | 191 contacts → |
“Midwest Employers Casualty (MEC) is exclusively focused on tailored workers’ compensation excess insurance products that meet the unique needs of individual employers, groups and…” Recorded description excerpt · September 16, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 231 company matches
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Excess and surplus insurance companies: dataset insights
September 16, 2026These summaries describe recorded coverage in this saved dataset. Coverage describes records in RevenueBase, rather than a census of every business in this market.
Reported company sizes
230 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
Coverage describes records in RevenueBase, rather than a census of every business in this market.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 16, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Excess and surplus insurance companies by location
2 lists · largest firstEvery Excess and surplus insurance companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
Questions about this company list
What does Exact match mean for excess and surplus insurance companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many excess and surplus insurance companies did RevenueBase find worldwide?
The saved snapshot records 231 matching company records, 24,892 tracked contacts and 12,913 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 16, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
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Cite this list
RevenueBase Data Team. Top 25 excess and surplus insurance companies worldwide. Snapshot: September 16, 2026. https://revenuebase.ai/companies/browse/excess-and-surplus-insurance-companies.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗