Company lists · Data refreshed November 2026
Top 25 Excess and surplus reinsurers worldwide
RevenueBase identified 111 company matches for excess and surplus reinsurers worldwide as of November 2026 and tracks 8,105 professional contacts across them, including 3,835 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for excess and surplus reinsurers worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 6, 2026. Country and city lists for excess and surplus reinsurers follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest excess and surplus reinsurers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 685 contacts → | ||||
Exact match “Specialist commercial insurer and reinsurer, underwriting a diversified portfolio of specialty lines.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 678 contacts → | ||||
Exact match “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 in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 656 contacts → | ||||
Exact match “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 in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 560 contacts → | ||||
Exact match “OdysseyRe offers a broad range of property, casualty, and specialty reinsurance solutions through a network of 14 branch and representative offices around the world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 537 contacts → | ||||
Exact match “James River® is a specialty insurer operating on an Excess & Surplus Lines basis in all fifty states and D.C.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 401 contacts → | ||||
Exact match “Navigators, a brand of The Hartford is a market-leading provider of E&S solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 376 contacts → | ||||
Exact match “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 in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 358 contacts → | ||||
Exact match “Ironshore, a Liberty Mutual Company, is dedicated to the wholesale market.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 252 contacts → | ||||
Exact match “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 in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 235 contacts → | ||||
Exact match “Prime Insurance Company is an excess and surplus lines insurance carrier that specializes in providing solutions for hard-to-place and declined risks.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 217 contacts → | ||||
Exact match “Arch Re supplies meaningful capacity to the global reinsurance marketplace.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 205 contacts → | ||||
Exact match “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 in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 204 contacts → | ||||
Exact match “We write a wide variety of complex transactional and specialty casualty and reinsurance risks, creating customized responsive underwriting solutions for a range of exposures.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 174 contacts → | ||||
Exact match “We put retail agents at the center of everything we do.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 155 contacts → | ||||
Exact match “Century Insurance Group is a premier provider of excess and surplus lines insurance and is a division of AF Group, whose brands are premier providers of innovative, specialty…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 143 contacts → | ||||
Exact match “American Agricultural Insurance Company (AmericanAg®) stands out from the marketplace as a provider of reinsurance services across the insurance spectrum with a growing global…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 121 contacts → | ||||
Exact match “Built to deliver Expertise & Speed® for our wholesale partners, Dellwood modernizes the business insurance ecosystem with a balanced approach of technology and personal service…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 104 contacts → | ||||
Exact match “Ocean Re is an international specialty reinsurer providing facultative, treaty, and structured reinsurance solutions that help insurers and reinsurers manage volatility, protect…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 98 contacts → | ||||
Exact match “As a trusted affiliate of Selective Insurance, MUSIC (Mesa Underwriters Specialty Insurance Company) specializes in providing Excess & Surplus lines insurance solutions for risks…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 90 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 76 contacts → | ||||
Exact match “Conduit Re is a Bermuda-based multi-line reinsurer with a global reach.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 64 contacts → | ||||
Exact match “Arch Reinsurance Ltd.'s experienced management team, industry-leading underwriting talent and substantial capacity let us offer sound decision making for "large lines" on select…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 23 | 60 contacts → | ||||
Exact match “In the United States, we underwrite specialty casualty and property reinsurance, including some of today’s most distressed lines of business.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 24 | 57 contacts → | ||||
Exact match “West Congress Insurance Services LLC (WestCongress) is a premier provider of general liability and excess insurance solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 25 | 39 contacts → | ||||
Exact match “The Toa Reinsurance Company of America is an insurance company based out of 177 Madison Avenue, Morristown, New Jersey, United States.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “excess and surplus reinsurers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 111 excess and surplus reinsurers worldwide
See the full list, filter by size, metro and specialty, and access 3,835 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Excess and surplus reinsurers worldwide at a glance
As of Nov 6, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for excess and surplus reinsurers are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “excess and surplus reinsurers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 3,835 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Excess and surplus reinsurers by location
4 lists · largest firstEvery Excess and surplus reinsurers 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 SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “excess and surplus reinsurers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many excess and surplus reinsurers are there worldwide?
RevenueBase identified 111 company matches for excess and surplus reinsurers worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
IGI tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most excess and surplus reinsurers?
The United States leads with 62 companies, followed by the United Kingdom (39) and Türkiye (28). Every excess and surplus reinsurers list by country and city is linked on this page.
Which city has the most excess and surplus reinsurers?
London leads with 5 company records, followed by New York (4) and Kuala Lumpur (3).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,835 professional contacts with verified work emails tracked across these 111 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 111 excess and surplus reinsurers worldwide. Start with a free account, no credit card.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
Company intelligence · public preview
Top 25 excess and surplus reinsurers worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 111 matching company records for excess and surplus reinsurers worldwide, with 8,105 tracked contacts and 3,835 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: November 6, 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 reinsurers 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 |  IGIiginsure.comHQ: Hamilton, BermudaReported employees: 201-500 | Hamilton, Bermuda | 201-500 | Exact match | 685 contacts → |
“Specialist commercial insurer and reinsurer, underwriting a diversified portfolio of specialty lines.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Kinsale Insurancekinsaleins.comHQ: Richmond, VA, United StatesReported employees: 501-1,000 | Richmond, VA, United States | 501-1,000 | Exact match | 678 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Admiral Insurance Group A Berkley Companyadmiralins.comHQ: Moorestown, GA, United StatesReported employees: 201-500 | Moorestown, GA, United States | 201-500 | Exact match | 656 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Odysseyreodysseyre.comHQ: Stamford, CT, United StatesReported employees: 501-1,000 | Stamford, CT, United States | 501-1,000 | Exact match | 560 contacts → |
“OdysseyRe offers a broad range of property, casualty, and specialty reinsurance solutions through a network of 14 branch and representative offices around the world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  James River Insurance Companyjrvrgroup.comHQ: Richmond, VA, United StatesReported employees: 501-1,000 | Richmond, VA, United States | 501-1,000 | Exact match | 537 contacts → |
“James River® is a specialty insurer operating on an Excess & Surplus Lines basis in all fifty states and D.C.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Navigators, A Brand Of The Hartfordthehartford.comHQ: Hartford, CT, United StatesReported employees: 10001+ | Hartford, CT, United States | 10001+ | Exact match | 401 contacts → |
“Navigators, a brand of The Hartford is a market-leading provider of E&S solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Westchester, A Chubb Companywestchester.comHQ: Alpharetta, GA, United StatesReported employees: 501-1,000 | Alpharetta, GA, United States | 501-1,000 | Exact match | 376 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Ironshore Insuranceironshore.comHQ: NY, United StatesReported employees: 1,001-5,000 | NY, United States | 1,001-5,000 | Exact match | 358 contacts → |
“Ironshore, a Liberty Mutual Company, is dedicated to the wholesale market.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Richmond Nationalrichmondnational.comHQ: Glen Allen, VA, United StatesReported employees: 51-200 | Glen Allen, VA, United States | 51-200 | Exact match | 252 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Prime Insurance Companyprimeis.comHQ: Sandy, UT, United StatesReported employees: 51-200 | Sandy, UT, United States | 51-200 | Exact match | 235 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Arch REarchre.comHQ: BermudaReported employees: 201-500 | Bermuda | 201-500 | Exact match | 217 contacts → |
“Arch Re supplies meaningful capacity to the global reinsurance marketplace.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Genstar Insurance Services, LLCgeneralstar.comHQ: Stamford, IL, United StatesReported employees: 51-200 | Stamford, IL, 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Ambridge Groupambridge-group.comHQ: New York, United StatesReported employees: 51-200 | New York, United States | 51-200 | Exact match | 204 contacts → |
“We write a wide variety of complex transactional and specialty casualty and reinsurance risks, creating customized responsive underwriting solutions for a range of exposures.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Berkley Aspire A Berkley Companyberkleyaspire.comHQ: Scottsdale, AZ, United StatesReported employees: 201-500 | Scottsdale, AZ, United States | 201-500 | Exact match | 174 contacts → |
“We put retail agents at the center of everything we do.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Century Insurance Groupcenturysurety.comHQ: Westerville, OH, United StatesReported employees: 201-500 | Westerville, OH, United States | 201-500 | Exact match | 155 contacts → |
“Century Insurance Group is a premier provider of excess and surplus lines insurance and is a division of AF Group, whose brands are premier providers of innovative, specialty…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Americanagaaic.comHQ: Schaumburg, OH, United StatesReported employees: 51-200 | Schaumburg, OH, United States | 51-200 | Exact match | 143 contacts → |
“American Agricultural Insurance Company (AmericanAg®) stands out from the marketplace as a provider of reinsurance services across the insurance spectrum with a growing global…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Dellwood Insurance Groupdellwood.comHQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 121 contacts → |
“Built to deliver Expertise & Speed® for our wholesale partners, Dellwood modernizes the business insurance ecosystem with a balanced approach of technology and personal service…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Ocean International Reinsuranceocean-re.comHQ: St. James, VietnamReported employees: 51-200 | St. James, Vietnam | 51-200 | Exact match | 104 contacts → |
“Ocean Re is an international specialty reinsurer providing facultative, treaty, and structured reinsurance solutions that help insurers and reinsurers manage volatility, protect…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  MUSICmusic-ins.comHQ: Scottsdale, AZ, United StatesReported employees: 51-200 | Scottsdale, AZ, United States | 51-200 | Exact match | 98 contacts → |
“As a trusted affiliate of Selective Insurance, MUSIC (Mesa Underwriters Specialty Insurance Company) specializes in providing Excess & Surplus lines insurance solutions for risks…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  OLD Republic Alternative Marketsorsiu.comHQ: Lower Makefield Township, PA, United StatesReported employees: 11-50 | Lower Makefield Township, PA, United States | 11-50 | Exact match | 90 contacts → |
“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…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Conduit REconduitreinsurance.comHQ: BermudaReported employees: 51-200 | Bermuda | 51-200 | Exact match | 76 contacts → |
“Conduit Re is a Bermuda-based multi-line reinsurer with a global reach.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Arch Reinsurance LTDarchreinsurance.bmHQ: Pembroke, BermudaReported employees: 51-200 | Pembroke, Bermuda | 51-200 | Exact match | 64 contacts → |
“Arch Reinsurance Ltd.'s experienced management team, industry-leading underwriting talent and substantial capacity let us offer sound decision making for "large lines" on select…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Arch Reinsurance Companyarchreco.comHQ: Morristown, NJ, United StatesReported employees: 501-1,000 | Morristown, NJ, United States | 501-1,000 | Exact match | 60 contacts → |
“In the United States, we underwrite specialty casualty and property reinsurance, including some of today’s most distressed lines of business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Westcongress Insurance Services LLCwestcongress.comHQ: Manchester, NH, United StatesReported employees: 51-200 | Manchester, NH, United States | 51-200 | Exact match | 57 contacts → |
“West Congress Insurance Services LLC (WestCongress) is a premier provider of general liability and excess insurance solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: Morristown, NJ, United StatesReported employees: 51-200 | Morristown, NJ, United States | 51-200 | Exact match | 39 contacts → |
“The Toa Reinsurance Company of America is an insurance company based out of 177 Madison Avenue, Morristown, New Jersey, United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 111 company matches
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Excess and surplus reinsurers: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
110 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.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 111 companies.
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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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: November 6, 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 reinsurers by location
4 lists · largest firstEvery Excess and surplus reinsurers 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 reinsurers?
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 reinsurers did RevenueBase find worldwide?
The saved snapshot records 111 matching company records, 8,105 tracked contacts and 3,835 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: November 6, 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
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 excess and surplus reinsurers worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/excess-and-surplus-reinsurers.
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 reinsurers worldwide
RevenueBase records 111 matching company records for excess and surplus reinsurers worldwide, with 8,105 tracked contacts and 3,835 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: November 6, 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 reinsurers 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 | IGIiginsure.com HQ: Hamilton, BermudaReported employees: 201-500 | Hamilton, Bermuda | 201-500 | Exact match | 685 contacts → |
“Specialist commercial insurer and reinsurer, underwriting a diversified portfolio of specialty lines.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Kinsale Insurancekinsaleins.com HQ: Richmond, VA, United StatesReported employees: 501-1,000 | Richmond, VA, United States | 501-1,000 | Exact match | 678 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Admiral Insurance Group A Berkley Companyadmiralins.com HQ: Moorestown, GA, United StatesReported employees: 201-500 | Moorestown, GA, United States | 201-500 | Exact match | 656 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Odysseyreodysseyre.com HQ: Stamford, CT, United StatesReported employees: 501-1,000 | Stamford, CT, United States | 501-1,000 | Exact match | 560 contacts → |
“OdysseyRe offers a broad range of property, casualty, and specialty reinsurance solutions through a network of 14 branch and representative offices around the world.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | James River Insurance Companyjrvrgroup.com HQ: Richmond, VA, United StatesReported employees: 501-1,000 | Richmond, VA, United States | 501-1,000 | Exact match | 537 contacts → |
“James River® is a specialty insurer operating on an Excess & Surplus Lines basis in all fifty states and D.C.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Navigators, A Brand Of The Hartfordthehartford.com HQ: Hartford, CT, United StatesReported employees: 10001+ | Hartford, CT, United States | 10001+ | Exact match | 401 contacts → |
“Navigators, a brand of The Hartford is a market-leading provider of E&S solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Westchester, A Chubb Companywestchester.com HQ: Alpharetta, GA, United StatesReported employees: 501-1,000 | Alpharetta, GA, United States | 501-1,000 | Exact match | 376 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Ironshore Insuranceironshore.com HQ: NY, United StatesReported employees: 1,001-5,000 | NY, United States | 1,001-5,000 | Exact match | 358 contacts → |
“Ironshore, a Liberty Mutual Company, is dedicated to the wholesale market.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Richmond Nationalrichmondnational.com HQ: Glen Allen, VA, United StatesReported employees: 51-200 | Glen Allen, VA, United States | 51-200 | Exact match | 252 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Prime Insurance Companyprimeis.com HQ: Sandy, UT, United StatesReported employees: 51-200 | Sandy, UT, United States | 51-200 | Exact match | 235 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Arch REarchre.com HQ: BermudaReported employees: 201-500 | Bermuda | 201-500 | Exact match | 217 contacts → |
“Arch Re supplies meaningful capacity to the global reinsurance marketplace.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Genstar Insurance Services, LLCgeneralstar.com HQ: Stamford, IL, United StatesReported employees: 51-200 | Stamford, IL, 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 · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Ambridge Groupambridge-group.com HQ: New York, United StatesReported employees: 51-200 | New York, United States | 51-200 | Exact match | 204 contacts → |
“We write a wide variety of complex transactional and specialty casualty and reinsurance risks, creating customized responsive underwriting solutions for a range of exposures.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Berkley Aspire A Berkley Companyberkleyaspire.com HQ: Scottsdale, AZ, United StatesReported employees: 201-500 | Scottsdale, AZ, United States | 201-500 | Exact match | 174 contacts → |
“We put retail agents at the center of everything we do.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Century Insurance Groupcenturysurety.com HQ: Westerville, OH, United StatesReported employees: 201-500 | Westerville, OH, United States | 201-500 | Exact match | 155 contacts → |
“Century Insurance Group is a premier provider of excess and surplus lines insurance and is a division of AF Group, whose brands are premier providers of innovative, specialty…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Americanagaaic.com HQ: Schaumburg, OH, United StatesReported employees: 51-200 | Schaumburg, OH, United States | 51-200 | Exact match | 143 contacts → |
“American Agricultural Insurance Company (AmericanAg®) stands out from the marketplace as a provider of reinsurance services across the insurance spectrum with a growing global…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Dellwood Insurance Groupdellwood.com HQ: United StatesReported employees: 51-200 | United States | 51-200 | Exact match | 121 contacts → |
“Built to deliver Expertise & Speed® for our wholesale partners, Dellwood modernizes the business insurance ecosystem with a balanced approach of technology and personal service…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Ocean International Reinsuranceocean-re.com HQ: St. James, VietnamReported employees: 51-200 | St. James, Vietnam | 51-200 | Exact match | 104 contacts → |
“Ocean Re is an international specialty reinsurer providing facultative, treaty, and structured reinsurance solutions that help insurers and reinsurers manage volatility, protect…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | MUSICmusic-ins.com HQ: Scottsdale, AZ, United StatesReported employees: 51-200 | Scottsdale, AZ, United States | 51-200 | Exact match | 98 contacts → |
“As a trusted affiliate of Selective Insurance, MUSIC (Mesa Underwriters Specialty Insurance Company) specializes in providing Excess & Surplus lines insurance solutions for risks…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | OLD Republic Alternative Marketsorsiu.com HQ: Lower Makefield Township, PA, United StatesReported employees: 11-50 | Lower Makefield Township, PA, United States | 11-50 | Exact match | 90 contacts → |
“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…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Conduit REconduitreinsurance.com HQ: BermudaReported employees: 51-200 | Bermuda | 51-200 | Exact match | 76 contacts → |
“Conduit Re is a Bermuda-based multi-line reinsurer with a global reach.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Arch Reinsurance LTDarchreinsurance.bm HQ: Pembroke, BermudaReported employees: 51-200 | Pembroke, Bermuda | 51-200 | Exact match | 64 contacts → |
“Arch Reinsurance Ltd.'s experienced management team, industry-leading underwriting talent and substantial capacity let us offer sound decision making for "large lines" on select…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Arch Reinsurance Companyarchreco.com HQ: Morristown, NJ, United StatesReported employees: 501-1,000 | Morristown, NJ, United States | 501-1,000 | Exact match | 60 contacts → |
“In the United States, we underwrite specialty casualty and property reinsurance, including some of today’s most distressed lines of business.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Westcongress Insurance Services LLCwestcongress.com HQ: Manchester, NH, United StatesReported employees: 51-200 | Manchester, NH, United States | 51-200 | Exact match | 57 contacts → |
“West Congress Insurance Services LLC (WestCongress) is a premier provider of general liability and excess insurance solutions.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | HQ: Morristown, NJ, United StatesReported employees: 51-200 | Morristown, NJ, United States | 51-200 | Exact match | 39 contacts → |
“The Toa Reinsurance Company of America is an insurance company based out of 177 Madison Avenue, Morristown, New Jersey, United States.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Excess and surplus reinsurers: dataset insights
November 6, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
110 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.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 111 companies.
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.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
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: November 6, 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 reinsurers by location
4 lists · largest firstEvery Excess and surplus reinsurers 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 reinsurers?
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 reinsurers did RevenueBase find worldwide?
The saved snapshot records 111 matching company records, 8,105 tracked contacts and 3,835 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: November 6, 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 reinsurers worldwide. Snapshot: November 6, 2026. https://revenuebase.ai/companies/browse/excess-and-surplus-reinsurers.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗