Company lists · Data refreshed September 2026
Top 25 Excess and surplus reinsurers based in the United States
RevenueBase identified 143 company matches for excess and surplus reinsurers associated with the United States as of September 2026 and tracks 19,759 professional contacts across them, including 9,932 with verified work emails. New York is the largest hub.
This list covers company matches for excess and surplus reinsurers associated with the United States, 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 September 20, 2026.
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 based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 4,128 contacts → | ||||
Exact match “Reinsurance Group of America, Incorporated (NYSE: RGA) is a global industry leader specializing in life and health reinsurance and financial solutions that help clients…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 3,411 contacts → | ||||
Exact match “Everest Group, Ltd.(“Everest”) is a global underwriting leader providing best-in-class property, casualty, and specialty reinsurance and insurance solutions that address…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 1,883 contacts → | ||||
Exact match “At QBE we’re driven by our purpose of enabling a more resilient future.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 1,542 contacts → | ||||
Exact match “Gen Re is a leading property/casualty and life/health reinsurance company.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 653 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 614 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 578 contacts → | ||||
Exact match “We are a leading international reinsurance organization headquartered in New York with operations worldwide.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 530 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 367 contacts → | ||||
Exact match “Navigators, a brand of The Hartford is a market-leading provider of E&S solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 363 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 360 contacts → | ||||
Exact match “HM Insurance Group (HM) works to protect businesses from the financial risk associated with health care costs.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 344 contacts → | ||||
Exact match “Ironshore, a Liberty Mutual Company, is dedicated to the wholesale market.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 263 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 216 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 193 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 175 contacts → | ||||
Exact match “Stealth Partner Group was founded in 2009 when two experienced insurance professionals envisioned a new kind of "Specialized General Agency" that focused exclusively on providing…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 165 contacts → | ||||
Exact match “Surplus Lines Made Easy!” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 160 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 133 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 128 contacts → | ||||
Exact match “The Stamford, Connecticut-based RVI Group is a financial services company focused on specialty property and casualty insurance and reinsurance.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 111 contacts → | ||||
Exact match “Arch Re's Facultative Reinsurance division focuses on supplying significant capacity to the global reinsurance marketplace backed by creative solutions and superior client service.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 96 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 80 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 · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 76 contacts → | ||||
Exact match “We strive to build successful partnerships and are committed to support the development of US life insurance companies of all sizes.” Recorded in the RevenueBase company graph · Sep 20, 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 143 excess and surplus reinsurers based in the United States
See the full list, filter by size, metro and specialty, and access 9,932 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Excess and surplus reinsurers based in the United States at a glance
As of Sep 20, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 143 companies.
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.
- What qualifies
- Company records associated with the United States 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 9,932 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 September 20, 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.
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 based in the United States?
RevenueBase identified 143 company matches for excess and surplus reinsurers associated with the United States as of September 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?
Reinsurance Group Of America, Incorporated tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most excess and surplus reinsurers?
New York leads with 13 company records, followed by Stamford (9) and Dallas (6).
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 9,932 professional contacts with verified work emails tracked across these 143 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 September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 143 excess and surplus reinsurers based in the United States. Start with a free account, no credit card.
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Excess and surplus reinsurers by geography
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
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Excess and surplus reinsurers based in Bermuda
- Excess and surplus reinsurers based in Türkiye
- Excess and surplus reinsurers based in the United Kingdom
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Company intelligence · public preview
Top 25 excess and surplus reinsurers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 143 matching company records for excess and surplus reinsurers based in the United States, with 19,759 tracked contacts and 9,932 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 20, 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 based in the United States
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 | HQ: Chesterfield, MO, United StatesReported employees: 1,001-5,000 | Chesterfield, MO, United States | 1,001-5,000 | Exact match | 4,128 contacts → |
“Reinsurance Group of America, Incorporated (NYSE: RGA) is a global industry leader specializing in life and health reinsurance and financial solutions that help clients…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Everesteverestglobal.comHQ: Warren, NJ, United StatesReported employees: 1,001-5,000 | Warren, NJ, United States | 1,001-5,000 | Exact match | 3,411 contacts → |
“Everest Group, Ltd.(“Everest”) is a global underwriting leader providing best-in-class property, casualty, and specialty reinsurance and insurance solutions that address…” Recorded description excerpt · September 20, 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  GEN REgenre.comHQ: Stamford, CT, United StatesReported employees: 1,001-5,000 | Stamford, CT, United States | 1,001-5,000 | Exact match | 1,542 contacts → |
“Gen Re is a leading property/casualty and life/health reinsurance company.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Transretransre.comHQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 578 contacts → |
“We are a leading international reinsurance organization headquartered in New York with operations worldwide.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Odysseyreodysseyre.comHQ: Stamford, CT, United StatesReported employees: 501-1,000 | Stamford, CT, United States | 501-1,000 | Exact match | 530 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HM Insurance Grouphmig.com HQ: Pittsburgh, PA, United StatesReported employees: 201-500 | Pittsburgh, PA, United States | 201-500 | Exact match | 360 contacts → |
“HM Insurance Group (HM) works to protect businesses from the financial risk associated with health care costs.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Ambridge Groupambridge-group.comHQ: New York, United StatesReported employees: 51-200 | New York, United States | 51-200 | Exact match | 193 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Stealth Partner Group, An Amwins Companystealthpartnergroup.com HQ: Scottsdale, AZ, United StatesReported employees: 201-500 | Scottsdale, AZ, United States | 201-500 | Exact match | 175 contacts → |
“Stealth Partner Group was founded in 2009 when two experienced insurance professionals envisioned a new kind of "Specialized General Agency" that focused exclusively on providing…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Berkley Aspire A Berkley Companyberkleyaspire.comHQ: Scottsdale, AZ, United StatesReported employees: 201-500 | Scottsdale, AZ, United States | 201-500 | Exact match | 165 contacts → |
“Surplus Lines Made Easy!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Century Insurance Groupcenturysurety.com HQ: Westerville, OH, United StatesReported employees: 201-500 | Westerville, OH, United States | 201-500 | Exact match | 160 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Americanagaaic.comHQ: Schaumburg, IL, United StatesReported employees: 51-200 | Schaumburg, IL, United States | 51-200 | Exact match | 133 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  RVI Grouprvigroup.comHQ: Stamford, CT, United StatesReported employees: 51-200 | Stamford, CT, United States | 51-200 | Exact match | 128 contacts → |
“The Stamford, Connecticut-based RVI Group is a financial services company focused on specialty property and casualty insurance and reinsurance.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Arch RE Facultativearchrefac.comHQ: Farmington, CT, United StatesReported employees: 51-200 | Farmington, CT, United States | 51-200 | Exact match | 111 contacts → |
“Arch Re's Facultative Reinsurance division focuses on supplying significant capacity to the global reinsurance marketplace backed by creative solutions and superior client service.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | MUSICmusic-ins.com HQ: Scottsdale, AZ, United StatesReported employees: 51-200 | Scottsdale, AZ, United States | 51-200 | Exact match | 96 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | 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 | 80 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Optimum Life Reinsurance United Statesoptimumre.comHQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 76 contacts → |
“We strive to build successful partnerships and are committed to support the development of US life insurance companies of all sizes.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 143 company matches
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Excess and surplus reinsurers: dataset insights
September 20, 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
142 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 worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 143 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: September 20, 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 ↗
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 based in the United States?
The saved snapshot records 143 matching company records, 19,759 tracked contacts and 9,932 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 20, 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
Excess and surplus reinsurers by geography
Cite this list
RevenueBase Data Team. Top 25 excess and surplus reinsurers based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/excess-and-surplus-reinsurers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Excess and surplus reinsurers based in Bermuda
- Excess and surplus reinsurers based in Türkiye
- Excess and surplus reinsurers based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
Company intelligence · public preview
Top 25 excess and surplus reinsurers based in the United States
RevenueBase records 143 matching company records for excess and surplus reinsurers based in the United States, with 19,759 tracked contacts and 9,932 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 20, 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 based in the United States
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 | HQ: Chesterfield, MO, United StatesReported employees: 1,001-5,000 | Chesterfield, MO, United States | 1,001-5,000 | Exact match | 4,128 contacts → |
“Reinsurance Group of America, Incorporated (NYSE: RGA) is a global industry leader specializing in life and health reinsurance and financial solutions that help clients…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Everesteverestglobal.com HQ: Warren, NJ, United StatesReported employees: 1,001-5,000 | Warren, NJ, United States | 1,001-5,000 | Exact match | 3,411 contacts → |
“Everest Group, Ltd.(“Everest”) is a global underwriting leader providing best-in-class property, casualty, and specialty reinsurance and insurance solutions that address…” Recorded description excerpt · September 20, 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | GEN REgenre.com HQ: Stamford, CT, United StatesReported employees: 1,001-5,000 | Stamford, CT, United States | 1,001-5,000 | Exact match | 1,542 contacts → |
“Gen Re is a leading property/casualty and life/health reinsurance company.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Transretransre.com HQ: New York, NY, United StatesReported employees: 501-1,000 | New York, NY, United States | 501-1,000 | Exact match | 578 contacts → |
“We are a leading international reinsurance organization headquartered in New York with operations worldwide.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Odysseyreodysseyre.com HQ: Stamford, CT, United StatesReported employees: 501-1,000 | Stamford, CT, United States | 501-1,000 | Exact match | 530 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HM Insurance Grouphmig.com HQ: Pittsburgh, PA, United StatesReported employees: 201-500 | Pittsburgh, PA, United States | 201-500 | Exact match | 360 contacts → |
“HM Insurance Group (HM) works to protect businesses from the financial risk associated with health care costs.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | 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 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Ambridge Groupambridge-group.com HQ: New York, United StatesReported employees: 51-200 | New York, United States | 51-200 | Exact match | 193 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Stealth Partner Group, An Amwins Companystealthpartnergroup.com HQ: Scottsdale, AZ, United StatesReported employees: 201-500 | Scottsdale, AZ, United States | 201-500 | Exact match | 175 contacts → |
“Stealth Partner Group was founded in 2009 when two experienced insurance professionals envisioned a new kind of "Specialized General Agency" that focused exclusively on providing…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Berkley Aspire A Berkley Companyberkleyaspire.com HQ: Scottsdale, AZ, United StatesReported employees: 201-500 | Scottsdale, AZ, United States | 201-500 | Exact match | 165 contacts → |
“Surplus Lines Made Easy!” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Century Insurance Groupcenturysurety.com HQ: Westerville, OH, United StatesReported employees: 201-500 | Westerville, OH, United States | 201-500 | Exact match | 160 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Americanagaaic.com HQ: Schaumburg, IL, United StatesReported employees: 51-200 | Schaumburg, IL, United States | 51-200 | Exact match | 133 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | RVI Grouprvigroup.com HQ: Stamford, CT, United StatesReported employees: 51-200 | Stamford, CT, United States | 51-200 | Exact match | 128 contacts → |
“The Stamford, Connecticut-based RVI Group is a financial services company focused on specialty property and casualty insurance and reinsurance.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Arch RE Facultativearchrefac.com HQ: Farmington, CT, United StatesReported employees: 51-200 | Farmington, CT, United States | 51-200 | Exact match | 111 contacts → |
“Arch Re's Facultative Reinsurance division focuses on supplying significant capacity to the global reinsurance marketplace backed by creative solutions and superior client service.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | MUSICmusic-ins.com HQ: Scottsdale, AZ, United StatesReported employees: 51-200 | Scottsdale, AZ, United States | 51-200 | Exact match | 96 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | 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 | 80 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 · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Optimum Life Reinsurance United Statesoptimumre.com HQ: Dallas, TX, United StatesReported employees: 51-200 | Dallas, TX, United States | 51-200 | Exact match | 76 contacts → |
“We strive to build successful partnerships and are committed to support the development of US life insurance companies of all sizes.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Excess and surplus reinsurers: dataset insights
September 20, 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
142 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 worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 143 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: September 20, 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 ↗
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 based in the United States?
The saved snapshot records 143 matching company records, 19,759 tracked contacts and 9,932 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 20, 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
Excess and surplus reinsurers by geography
Cite this list
RevenueBase Data Team. Top 25 excess and surplus reinsurers based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/excess-and-surplus-reinsurers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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