Company lists · Data refreshed October 2026
Top 25 Excess liability insurance companies based in the United States
RevenueBase identified 38 company matches for excess liability insurance companies associated with the United States as of October 2026 and tracks 1,899 professional contacts across them, including 1,083 with verified work emails. Chicago is the largest hub.
This list covers company matches for excess liability insurance companies 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 October 12, 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 liability insurance companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 661 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 · Oct 12, 2026 · View company records in RevenueBase | |||||
| 2 | 244 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 · Oct 12, 2026 · View company records in RevenueBase | |||||
| 3 | 203 contacts → | ||||
Exact match “Midwest Employers Casualty (MEC) is exclusively focused on tailored workers’ compensation excess insurance products that meet the unique needs of individual employers, groups and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 4 | 153 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 · Oct 12, 2026 · View company records in RevenueBase | |||||
| 5 | 97 contacts → | ||||
Exact match “We have been a trusted underwriter of Management and Professional Liability Insurance since 1983.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 6 | 55 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 · Oct 12, 2026 · View company records in RevenueBase | |||||
| 7 | 45 contacts → | ||||
Exact match “Energy Insurance Mutual (EIM) is a mutually owned excess liability insurance carrier.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 8 | 33 contacts → | ||||
Exact match “Established in 2006, Avondale Insurance Associates is an Excess and Surplus Lines Underwriting Management Company focused on small to mid-sized accounts across all property and…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 9 | 32 contacts → | ||||
Exact match “Headquartered in Madison, Wisconsin, CM Vantage™ is an excess and surplus lines insurance company that specializes in underwriting unique exposures and delivering innovative…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 10 | 31 contacts → | ||||
Exact match “Approachable, Knowledgeable, Dependable - these qualities are at the core of StarLine's Excess of Loss Self-Insurance and reinsurance offerings.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 11 | 24 contacts → | ||||
Exact match “Applied Specialty Underwriters provides liability insurance coverage, including primary and excess liability for project-based construction, New York construction, infrastructure…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 12 | 17 contacts → | ||||
Exact match “Since 1986 RSI has been helping retail agents secure coverage for all of their Excess and Surplus Lines needs.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 13 | 16 contacts → | ||||
Exact match “LightSpeed Specialty Insurance Solutions is an Excess & Surplus Lines broker delivering specialty Homeowners, Dwelling Fire, and Condo insurance programs.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 14 | 14 contacts → | ||||
Exact match “The Gray Surplus Lines Insurance Company, Excess Liability division is a team of highly skilled and experienced underwriters working exclusively with wholesale brokers to provide…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 15 | 13 contacts → | ||||
Exact match “Champlain Insurance Group is a general liability and excess insurance enterprise.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 16 | 11 contacts → | ||||
Exact match “Preferred Specialty, LLC is an Excess and Surplus Lines Wholesaler located in Columbia, SC.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 17 | 9 contacts → | ||||
Exact match “Willow Risk Advisors is a national insurance brokerage specializing in Professional Liability (Malpractice) Insurance.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 18 | 8 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 19 | 5 contacts → | ||||
Exact match “Medallion Insurance Services provides Professional Liability Insurance to Architects, Engineers, Surveyors, CPA's, Accountants, and other professionals.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 20 | 4 contacts → | ||||
Exact match “Northeast National Brokerage, LLC (NNB) is an MGA with in-house binding authority providing excess liability to petroleum distributors through their extensive network of retail…” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 21 | 4 contacts → | ||||
Exact match “OSL Insurance Services, Inc.(OISI) is an excess and surplus lines producer, based in Houston, Texas.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 22 | 4 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 23 | 3 contacts → | ||||
Exact match “Aquitaine Underwriters LLC is an underwriting agency representing the Great American Insurance Group.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 24 | 3 contacts → | ||||
Exact match “American E&O Insurance Services, LLC is in the business of marketing professional liability (Errors & Omissions) products primarily to Insurance Agents & Brokers.” Recorded in the RevenueBase company graph · Oct 12, 2026 · View company records in RevenueBase | |||||
| 25 | 3 contacts → | ||||
Exact match “The California Joint Powers Risk Management Authority is a member-directed excess liability risk retention pool that is dedicated to protecting its members from catastrophic…” Recorded in the RevenueBase company graph · Oct 12, 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 liability insurance companies”. 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 38 excess liability insurance companies based in the United States
See the full list, filter by size, metro and specialty, and access 1,083 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Excess liability insurance companies based in the United States at a glance
As of Oct 12, 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 38 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 liability insurance companies” 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 1,083 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 October 12, 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 liability insurance companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many excess liability insurance companies are there based in the United States?
RevenueBase identified 38 company matches for excess liability insurance companies associated with the United States as of October 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?
Kinsale Insurance tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most excess liability insurance companies?
Chicago leads with 3 company records, followed by Boston (2) and Chesterfield (2).
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 1,083 professional contacts with verified work emails tracked across these 38 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 October 12, 2026.
Ready to reach these companies? Verified emails and direct dials for all 38 excess liability insurance companies based in the United States. 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
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- New lists
- AI companies based in the United States
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Company intelligence · public preview
Top 25 excess liability insurance companies 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 38 matching company records for excess liability insurance companies based in the United States, with 1,899 tracked contacts and 1,083 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: October 12, 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 liability insurance companies 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 | Kinsale Insurancekinsaleins.com HQ: Richmond, VA, United StatesReported employees: 501-1,000 | Richmond, VA, United States | 501-1,000 | Exact match | 661 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 · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Prime Insurance Companyprimeis.com HQ: Sandy, UT, United StatesReported employees: 51-200 | Sandy, UT, United States | 51-200 | Exact match | 244 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 · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Midwest Employers Casualty A Berkley Companymecasualty.com HQ: Chesterfield, MO, United StatesReported employees: 201-500 | Chesterfield, MO, United States | 201-500 | Exact match | 203 contacts → |
“Midwest Employers Casualty (MEC) is exclusively focused on tailored workers’ compensation excess insurance products that meet the unique needs of individual employers, groups and…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Century Insurance Groupcenturysurety.com HQ: Westerville, OH, United StatesReported employees: 201-500 | Westerville, OH, United States | 201-500 | Exact match | 153 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 · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  OLD Republic Professionalorprofessional.comHQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 97 contacts → |
“We have been a trusted underwriter of Management and Professional Liability Insurance since 1983.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Westcongress Insurance Services LLCwestcongress.com HQ: Manchester, NH, United StatesReported employees: 51-200 | Manchester, NH, United States | 51-200 | Exact match | 55 contacts → |
“West Congress Insurance Services LLC (WestCongress) is a premier provider of general liability and excess insurance solutions.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Energy Insurance Mutualeimltd.comHQ: Tampa, FL, United StatesReported employees: 51-200 | Tampa, FL, United States | 51-200 | Exact match | 45 contacts → |
“Energy Insurance Mutual (EIM) is a mutually owned excess liability insurance carrier.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Avondale Insurance Associates, INCavondaleins.com HQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 33 contacts → |
“Established in 2006, Avondale Insurance Associates is an Excess and Surplus Lines Underwriting Management Company focused on small to mid-sized accounts across all property and…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | CM Vantage Specialty Insurance Companycmvantage.com HQ: Madison, WI, United StatesReported employees: 11-50 | Madison, WI, United States | 11-50 | Exact match | 32 contacts → |
“Headquartered in Madison, Wisconsin, CM Vantage™ is an excess and surplus lines insurance company that specializes in underwriting unique exposures and delivering innovative…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Starlinestarlinegroup.com HQ: Osterville, MA, United StatesReported employees: 11-50 | Osterville, MA, United States | 11-50 | Exact match | 31 contacts → |
“Approachable, Knowledgeable, Dependable - these qualities are at the core of StarLine's Excess of Loss Self-Insurance and reinsurance offerings.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Applied Specialty Underwritersaesuw.comHQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 24 contacts → |
“Applied Specialty Underwriters provides liability insurance coverage, including primary and excess liability for project-based construction, New York construction, infrastructure…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | RSI International, INCrsimga.com HQ: Arlington, TX, United StatesReported employees: 51-200 | Arlington, TX, United States | 51-200 | Exact match | 17 contacts → |
“Since 1986 RSI has been helping retail agents secure coverage for all of their Excess and Surplus Lines needs.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: Walnut Creek, CA, United StatesReported employees: 11-50 | Walnut Creek, CA, United States | 11-50 | Exact match | 16 contacts → |
“LightSpeed Specialty Insurance Solutions is an Excess & Surplus Lines broker delivering specialty Homeowners, Dwelling Fire, and Condo insurance programs.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Gray Surplus Lines Insurance Companygraysurpluslines.com HQ: Metairie, LA, United StatesReported employees: 1-10 | Metairie, LA, United States | 1-10 | Exact match | 14 contacts → |
“The Gray Surplus Lines Insurance Company, Excess Liability division is a team of highly skilled and experienced underwriters working exclusively with wholesale brokers to provide…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Champlain Insurance Groupchamplaingroup.com HQ: Manchester, NH, United StatesReported employees: 51-200 | Manchester, NH, United States | 51-200 | Exact match | 13 contacts → |
“Champlain Insurance Group is a general liability and excess insurance enterprise.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Preferred Specialty, LLCpreferredspecialty.comHQ: Columbia, SC, United StatesReported employees: 11-50 | Columbia, SC, United States | 11-50 | Exact match | 11 contacts → |
“Preferred Specialty, LLC is an Excess and Surplus Lines Wholesaler located in Columbia, SC.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Willow Risk Advisorswillowrisk.com HQ: Doylestown, PA, United StatesReported employees: 11-50 | Doylestown, PA, United States | 11-50 | Exact match | 9 contacts → |
“Willow Risk Advisors is a national insurance brokerage specializing in Professional Liability (Malpractice) Insurance.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Centrex Underwriters, INCcentrexuw.com HQ: Germantown, TN, United StatesReported employees: 11-50 | Germantown, TN, United States | 11-50 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 |  Medallion Insurance Servicesmedallionpro.comHQ: Charlotte, NC, United StatesReported employees: 1-10 | Charlotte, NC, United States | 1-10 | Exact match | 5 contacts → |
“Medallion Insurance Services provides Professional Liability Insurance to Architects, Engineers, Surveyors, CPA's, Accountants, and other professionals.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Northeast National Brokerage An ISC Companynortheastnational.com HQ: West Hartford, CT, United StatesReported employees: 1-10 | West Hartford, CT, United States | 1-10 | Exact match | 4 contacts → |
“Northeast National Brokerage, LLC (NNB) is an MGA with in-house binding authority providing excess liability to petroleum distributors through their extensive network of retail…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | OSL Insurance Services, INCoslinsurance.com HQ: Houston, TX, United StatesReported employees: 1-10 | Houston, TX, United States | 1-10 | Exact match | 4 contacts → |
“OSL Insurance Services, Inc.(OISI) is an excess and surplus lines producer, based in Houston, Texas.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Rainier Insurance Companyrainierinsure.com HQ: Portland, OR, United StatesReported employees: 1-10 | Portland, OR, United States | 1-10 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Aquitaine Underwriters LLCaqunderwriters.com HQ: Windham, NH, United StatesReported employees: 1-10 | Windham, NH, United States | 1-10 | Exact match | 3 contacts → |
“Aquitaine Underwriters LLC is an underwriting agency representing the Great American Insurance Group.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  American E&o Insurance Services, LLCamericaneoins.comHQ: Glastonbury, CT, United StatesReported employees: 1-10 | Glastonbury, CT, United States | 1-10 | Exact match | 3 contacts → |
“American E&O Insurance Services, LLC is in the business of marketing professional liability (Errors & Omissions) products primarily to Insurance Agents & Brokers.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | California Joint Powers Risk Management Authority Cjprmamain.cjprma.org HQ: Livermore, CA, United StatesReported employees: 1-10 | Livermore, CA, United States | 1-10 | Exact match | 3 contacts → |
“The California Joint Powers Risk Management Authority is a member-directed excess liability risk retention pool that is dedicated to protecting its members from catastrophic…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 38 company matches
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Excess liability insurance companies: dataset insights
October 12, 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
38 records in the displayed employee bands.
0 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 38 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: October 12, 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 liability insurance companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many excess liability insurance companies did RevenueBase find based in the United States?
The saved snapshot records 38 matching company records, 1,899 tracked contacts and 1,083 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: October 12, 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
Cite this list
RevenueBase Data Team. Top 25 excess liability insurance companies based in the United States. Snapshot: October 12, 2026. https://revenuebase.ai/companies/excess-liability-insurance-companies/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
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
- Media companies based in the United States
- Oil and gas companies based in the United States
- Real estate companies based in the United States
Company intelligence · public preview
Top 25 excess liability insurance companies based in the United States
RevenueBase records 38 matching company records for excess liability insurance companies based in the United States, with 1,899 tracked contacts and 1,083 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: October 12, 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 liability insurance companies 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 | Kinsale Insurancekinsaleins.com HQ: Richmond, VA, United StatesReported employees: 501-1,000 | Richmond, VA, United States | 501-1,000 | Exact match | 661 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 · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Prime Insurance Companyprimeis.com HQ: Sandy, UT, United StatesReported employees: 51-200 | Sandy, UT, United States | 51-200 | Exact match | 244 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 · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Midwest Employers Casualty A Berkley Companymecasualty.com HQ: Chesterfield, MO, United StatesReported employees: 201-500 | Chesterfield, MO, United States | 201-500 | Exact match | 203 contacts → |
“Midwest Employers Casualty (MEC) is exclusively focused on tailored workers’ compensation excess insurance products that meet the unique needs of individual employers, groups and…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Century Insurance Groupcenturysurety.com HQ: Westerville, OH, United StatesReported employees: 201-500 | Westerville, OH, United States | 201-500 | Exact match | 153 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 · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | OLD Republic Professionalorprofessional.com HQ: Chicago, IL, United StatesReported employees: 51-200 | Chicago, IL, United States | 51-200 | Exact match | 97 contacts → |
“We have been a trusted underwriter of Management and Professional Liability Insurance since 1983.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Westcongress Insurance Services LLCwestcongress.com HQ: Manchester, NH, United StatesReported employees: 51-200 | Manchester, NH, United States | 51-200 | Exact match | 55 contacts → |
“West Congress Insurance Services LLC (WestCongress) is a premier provider of general liability and excess insurance solutions.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Energy Insurance Mutualeimltd.com HQ: Tampa, FL, United StatesReported employees: 51-200 | Tampa, FL, United States | 51-200 | Exact match | 45 contacts → |
“Energy Insurance Mutual (EIM) is a mutually owned excess liability insurance carrier.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Avondale Insurance Associates, INCavondaleins.com HQ: Boston, MA, United StatesReported employees: 11-50 | Boston, MA, United States | 11-50 | Exact match | 33 contacts → |
“Established in 2006, Avondale Insurance Associates is an Excess and Surplus Lines Underwriting Management Company focused on small to mid-sized accounts across all property and…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | CM Vantage Specialty Insurance Companycmvantage.com HQ: Madison, WI, United StatesReported employees: 11-50 | Madison, WI, United States | 11-50 | Exact match | 32 contacts → |
“Headquartered in Madison, Wisconsin, CM Vantage™ is an excess and surplus lines insurance company that specializes in underwriting unique exposures and delivering innovative…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Starlinestarlinegroup.com HQ: Osterville, MA, United StatesReported employees: 11-50 | Osterville, MA, United States | 11-50 | Exact match | 31 contacts → |
“Approachable, Knowledgeable, Dependable - these qualities are at the core of StarLine's Excess of Loss Self-Insurance and reinsurance offerings.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Applied Specialty Underwritersaesuw.com HQ: Chicago, IL, United StatesReported employees: 11-50 | Chicago, IL, United States | 11-50 | Exact match | 24 contacts → |
“Applied Specialty Underwriters provides liability insurance coverage, including primary and excess liability for project-based construction, New York construction, infrastructure…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | RSI International, INCrsimga.com HQ: Arlington, TX, United StatesReported employees: 51-200 | Arlington, TX, United States | 51-200 | Exact match | 17 contacts → |
“Since 1986 RSI has been helping retail agents secure coverage for all of their Excess and Surplus Lines needs.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | HQ: Walnut Creek, CA, United StatesReported employees: 11-50 | Walnut Creek, CA, United States | 11-50 | Exact match | 16 contacts → |
“LightSpeed Specialty Insurance Solutions is an Excess & Surplus Lines broker delivering specialty Homeowners, Dwelling Fire, and Condo insurance programs.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Gray Surplus Lines Insurance Companygraysurpluslines.com HQ: Metairie, LA, United StatesReported employees: 1-10 | Metairie, LA, United States | 1-10 | Exact match | 14 contacts → |
“The Gray Surplus Lines Insurance Company, Excess Liability division is a team of highly skilled and experienced underwriters working exclusively with wholesale brokers to provide…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Champlain Insurance Groupchamplaingroup.com HQ: Manchester, NH, United StatesReported employees: 51-200 | Manchester, NH, United States | 51-200 | Exact match | 13 contacts → |
“Champlain Insurance Group is a general liability and excess insurance enterprise.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Preferred Specialty, LLCpreferredspecialty.com HQ: Columbia, SC, United StatesReported employees: 11-50 | Columbia, SC, United States | 11-50 | Exact match | 11 contacts → |
“Preferred Specialty, LLC is an Excess and Surplus Lines Wholesaler located in Columbia, SC.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Willow Risk Advisorswillowrisk.com HQ: Doylestown, PA, United StatesReported employees: 11-50 | Doylestown, PA, United States | 11-50 | Exact match | 9 contacts → |
“Willow Risk Advisors is a national insurance brokerage specializing in Professional Liability (Malpractice) Insurance.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Centrex Underwriters, INCcentrexuw.com HQ: Germantown, TN, United StatesReported employees: 11-50 | Germantown, TN, United States | 11-50 | Exact match | 8 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 19 | Medallion Insurance Servicesmedallionpro.com HQ: Charlotte, NC, United StatesReported employees: 1-10 | Charlotte, NC, United States | 1-10 | Exact match | 5 contacts → |
“Medallion Insurance Services provides Professional Liability Insurance to Architects, Engineers, Surveyors, CPA's, Accountants, and other professionals.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Northeast National Brokerage An ISC Companynortheastnational.com HQ: West Hartford, CT, United StatesReported employees: 1-10 | West Hartford, CT, United States | 1-10 | Exact match | 4 contacts → |
“Northeast National Brokerage, LLC (NNB) is an MGA with in-house binding authority providing excess liability to petroleum distributors through their extensive network of retail…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | OSL Insurance Services, INCoslinsurance.com HQ: Houston, TX, United StatesReported employees: 1-10 | Houston, TX, United States | 1-10 | Exact match | 4 contacts → |
“OSL Insurance Services, Inc.(OISI) is an excess and surplus lines producer, based in Houston, Texas.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Rainier Insurance Companyrainierinsure.com HQ: Portland, OR, United StatesReported employees: 1-10 | Portland, OR, United States | 1-10 | Exact match | 4 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 23 | Aquitaine Underwriters LLCaqunderwriters.com HQ: Windham, NH, United StatesReported employees: 1-10 | Windham, NH, United States | 1-10 | Exact match | 3 contacts → |
“Aquitaine Underwriters LLC is an underwriting agency representing the Great American Insurance Group.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | American E&o Insurance Services, LLCamericaneoins.com HQ: Glastonbury, CT, United StatesReported employees: 1-10 | Glastonbury, CT, United States | 1-10 | Exact match | 3 contacts → |
“American E&O Insurance Services, LLC is in the business of marketing professional liability (Errors & Omissions) products primarily to Insurance Agents & Brokers.” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | California Joint Powers Risk Management Authority Cjprmamain.cjprma.org HQ: Livermore, CA, United StatesReported employees: 1-10 | Livermore, CA, United States | 1-10 | Exact match | 3 contacts → |
“The California Joint Powers Risk Management Authority is a member-directed excess liability risk retention pool that is dedicated to protecting its members from catastrophic…” Recorded description excerpt · October 12, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 38 company matches
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Excess liability insurance companies: dataset insights
October 12, 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
38 records in the displayed employee bands.
0 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 38 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: October 12, 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 liability insurance companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many excess liability insurance companies did RevenueBase find based in the United States?
The saved snapshot records 38 matching company records, 1,899 tracked contacts and 1,083 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: October 12, 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
Cite this list
RevenueBase Data Team. Top 25 excess liability insurance companies based in the United States. Snapshot: October 12, 2026. https://revenuebase.ai/companies/excess-liability-insurance-companies/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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