Company lists · Data refreshed September 2026
Top 25 Marine insurance underwriting companies based in the United States
RevenueBase identified 165 company matches for marine insurance underwriting companies associated with the United States as of September 2026 and tracks 6,838 professional contacts across them, including 2,339 with verified work emails. Miami is the largest hub.
This list covers company matches for marine insurance underwriting 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 September 15, 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 marine insurance underwriting companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 635 contacts → | ||||
Exact match “Core Specialty, through its subsidiary insurers, offers a diversified range of property, casualty, and marine insurance products for small to mid-sized businesses.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 2 | 363 contacts → | ||||
Exact match “Founded in 2014, by a team with deep experience across underwriting, analytics, reinsurance and capital markets, Palomar is an innovative specialty insurer serving residential and…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 3 | 335 contacts → | ||||
Exact match “Atlantic Casualty Insurance Company (Atlantic Casualty) was formed by Strickland Insurance Group (SIG) in 1983 to underwrite a substantial book of non-standard personal auto.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 4 | 228 contacts → | ||||
Exact match “Falvey Insurance Group is one group with many solutions.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 5 | 208 contacts → | ||||
Exact match “We are Mid-Continent Group - Strong, Secure, Flexible and Supportive.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 6 | 159 contacts → | ||||
Exact match “The American Equity Underwriters, Inc.(AEU) delivers specialized coverage and risk management solutions to waterfront employers across the United States.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 7 | 92 contacts → | ||||
Exact match “Founded in 1861, Foa & Son are international insurance brokers based in New York City.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 8 | 87 contacts → | ||||
Exact match “At EIMC, we are the trusted partner for marine insurance and global supply chain communities worldwide.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 9 | 62 contacts → | ||||
Exact match “Berkley Fire & Marine was launched in 2013 and is a Berkley company offering preferred inland marine and related property risks and services.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 10 | 52 contacts → | ||||
Exact match “Founded in New York in 1917, celebrating 106 years of service, the American Club is the only P&I mutual domiciled in the Americas.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 11 | 49 contacts → | ||||
Exact match “Universal Fire & Casualty Insurance Company (UFCIC) currently underwrites commercial property, general liability, business owner’s package (BOP), commercial multi-peril (CMP), and…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 12 | 49 contacts → | ||||
Exact match “International Marine Underwriters (IMU) traces its roots to the early 1900s, and offers a full range of ocean and inland marine insurance solutions.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 13 | 48 contacts → | ||||
Exact match “Global Marine Insurance Agency, a division of Specialty Program Group LLC provides specialized insurance solutions to boat, yacht and marine business owners.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 14 | 44 contacts → | ||||
Exact match “Berkley Offshore is an insurance provider specialising in Energy Upstream, Energy Liability and Marine Insurance.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 15 | 44 contacts → | ||||
Exact match “Deans & Homer was established in 1856 and is one of the oldest continuously operating companies in California.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 16 | 43 contacts → | ||||
Exact match “MHG Insurance is a leading insurance brokerage providing insurance advice and solutions for seafarers, businesses and groups and individuals around the world.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 17 | 42 contacts → | ||||
Exact match “We are a professional insurance underwriting management company specializing in Commercial Automobile, Commercial General Liability, Commercial Property, Inland Marine and Garage…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 18 | 42 contacts → | ||||
Exact match “Our history dates back to the early 1990’s, when Maritime General Agency and Marine MGA were founded.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 19 | 41 contacts → | ||||
Exact match “At Ascot U.S, we are offering specialty solutions at scale: we understand our markets, we strive to maintain the highest level of expertise in our fields, and we are laser-focused…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 20 | 37 contacts → | ||||
Exact match “Old Republic Inland Marine is a collaborative team of highly specialized, experienced underwriters with the authority to deliver thoughtful, timely underwriting decisions for…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 21 | 37 contacts → | ||||
Exact match “Supply to our customers in the insurance industry, Reinsurance capacity in ALL MARINE LINES, with an INTEGRAL RISK MANAGEMENT PROGRAM across the entire logistics chain.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 22 | 34 contacts → | ||||
Exact match “Founded in 1905, RB Jones is a leader in providing specialty risk coverage solutions to brokers, agents and wholesalers, including: Commercial Marine, Excess Energy, Commercial…” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 23 | 29 contacts → | ||||
Exact match “Griffin Underwriting Services enables retail insurance agents and brokers to compete and win on hard-to-place risks.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 24 | 26 contacts → | ||||
Exact match “International Bond & Marine was formed in 1986 as one of the first Managing General Underwriters for Customs Bonds in the U.S.” Recorded in the RevenueBase company graph · Sep 15, 2026 · View company records in RevenueBase | |||||
| 25 | 25 contacts → | ||||
Exact match “Trident Marine Managers is a leading specialty marine and offshore energy managing general underwriter (MGU) that delivers capacity and solid protection.” Recorded in the RevenueBase company graph · Sep 15, 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 “marine insurance underwriting 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 165 marine insurance underwriting companies based in the United States
See the full list, filter by size, metro and specialty, and access 2,339 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Marine insurance underwriting companies based in the United States at a glance
As of Sep 15, 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 165 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 “marine insurance underwriting 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 2,339 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 15, 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 “marine insurance underwriting companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many marine insurance underwriting companies are there based in the United States?
RevenueBase identified 165 company matches for marine insurance underwriting companies 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?
Core Specialty Insurance Holdings, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most marine insurance underwriting companies?
Miami leads with 10 company records, followed by New York (10) and Fort Lauderdale (7).
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 2,339 professional contacts with verified work emails tracked across these 165 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 15, 2026.
Ready to reach these companies? Verified emails and direct dials for all 165 marine insurance underwriting companies based in the United States. Start with a free account, no credit card.
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Marine insurance underwriting companies 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
- Marine insurance underwriting companies based in Australia
- Marine insurance underwriting companies based in Germany
- Marine insurance underwriting companies based in Greece
- Marine insurance underwriting companies based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
Company intelligence · public preview
Top 25 marine insurance underwriting 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 165 matching company records for marine insurance underwriting companies based in the United States, with 6,838 tracked contacts and 2,339 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 15, 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 marine insurance underwriting 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 |  Core Specialty Insurance Holdings, INCcorespecialty.comHQ: Cincinnati, OH, United StatesReported employees: 1,001-5,000 | Cincinnati, OH, United States | 1,001-5,000 | Exact match | 635 contacts → |
“Core Specialty, through its subsidiary insurers, offers a diversified range of property, casualty, and marine insurance products for small to mid-sized businesses.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Palomarplmr.comHQ: La Jolla, CA, United StatesReported employees: 501-1,000 | La Jolla, CA, United States | 501-1,000 | Exact match | 363 contacts → |
“Founded in 2014, by a team with deep experience across underwriting, analytics, reinsurance and capital markets, Palomar is an innovative specialty insurer serving residential and…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Atlantic Casualty Insurance COatlanticcasualty.netHQ: Goldsboro, NC, United StatesReported employees: 201-500 | Goldsboro, NC, United States | 201-500 | Exact match | 335 contacts → |
“Atlantic Casualty Insurance Company (Atlantic Casualty) was formed by Strickland Insurance Group (SIG) in 1983 to underwrite a substantial book of non-standard personal auto.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Falvey Insurance Groupfalveyinsurancegroup.comHQ: North Kingstown, RI, United StatesReported employees: 51-200 | North Kingstown, RI, United States | 51-200 | Exact match | 228 contacts → |
“Falvey Insurance Group is one group with many solutions.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Mid-Continent Groupmcg-ins.comHQ: Tulsa, OK, United StatesReported employees: 201-500 | Tulsa, OK, United States | 201-500 | Exact match | 208 contacts → |
“We are Mid-Continent Group - Strong, Secure, Flexible and Supportive.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  The American Equity Underwriters, INCamequity.comHQ: Mobile, AL, United StatesReported employees: 51-200 | Mobile, AL, United States | 51-200 | Exact match | 159 contacts → |
“The American Equity Underwriters, Inc.(AEU) delivers specialized coverage and risk management solutions to waterfront employers across the United States.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  FOA & SON Insurancefoason.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 92 contacts → |
“Founded in 1861, Foa & Son are international insurance brokers based in New York City.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  EIMCeimc.comHQ: Jersey City, NJ, United StatesReported employees: 11-50 | Jersey City, NJ, United States | 11-50 | Exact match | 87 contacts → |
“At EIMC, we are the trusted partner for marine insurance and global supply chain communities worldwide.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Berkley Fire & Marine A Berkley Companyberkleymarine.comHQ: Schaumburg, IL, United StatesReported employees: 5,001-10,000 | Schaumburg, IL, United States | 5,001-10,000 | Exact match | 62 contacts → |
“Berkley Fire & Marine was launched in 2013 and is a Berkley company offering preferred inland marine and related property risks and services.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  American P&i Clubamerican-club.comHQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 52 contacts → |
“Founded in New York in 1917, celebrating 106 years of service, the American Club is the only P&I mutual domiciled in the Americas.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Waterford, MI, United StatesReported employees: 11-50 | Waterford, MI, United States | 11-50 | Exact match | 49 contacts → |
“Universal Fire & Casualty Insurance Company (UFCIC) currently underwrites commercial property, general liability, business owner’s package (BOP), commercial multi-peril (CMP), and…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 49 contacts → |
“International Marine Underwriters (IMU) traces its roots to the early 1900s, and offers a full range of ocean and inland marine insurance solutions.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Global Marine Insurance Agencyglobalmarineinsurance.comHQ: Traverse City, MI, United StatesReported employees: 51-200 | Traverse City, MI, United States | 51-200 | Exact match | 48 contacts → |
“Global Marine Insurance Agency, a division of Specialty Program Group LLC provides specialized insurance solutions to boat, yacht and marine business owners.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Berkley Offshore Underwriting Managers A Berkley Companyberkleyoffshore.comHQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 44 contacts → |
“Berkley Offshore is an insurance provider specialising in Energy Upstream, Energy Liability and Marine Insurance.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Deans & Homerdeanshomer.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 44 contacts → |
“Deans & Homer was established in 1856 and is one of the oldest continuously operating companies in California.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  MHG Insurancemhginsurance.comHQ: Fort Lauderdale, FL, United StatesReported employees: 11-50 | Fort Lauderdale, FL, United States | 11-50 | Exact match | 43 contacts → |
“MHG Insurance is a leading insurance brokerage providing insurance advice and solutions for seafarers, businesses and groups and individuals around the world.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Riscom Regional Insurance Services Company, LLCriscomins.comHQ: Shreveport, LA, United StatesReported employees: 51-200 | Shreveport, LA, United States | 51-200 | Exact match | 42 contacts → |
“We are a professional insurance underwriting management company specializing in Commercial Automobile, Commercial General Liability, Commercial Property, Inland Marine and Garage…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  One80 Marineone80intermediaries.comHQ: Westbrook, CT, United StatesReported employees: 51-200 | Westbrook, CT, United States | 51-200 | Exact match | 42 contacts → |
“Our history dates back to the early 1990’s, when Maritime General Agency and Marine MGA were founded.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Ascot U.Sascotgroup.comHQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 41 contacts → |
“At Ascot U.S, we are offering specialty solutions at scale: we understand our markets, we strive to maintain the highest level of expertise in our fields, and we are laser-focused…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  OLD Republic Inland Marineoldrepublicinlandmarine.comHQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 37 contacts → |
“Old Republic Inland Marine is a collaborative team of highly specialized, experienced underwriters with the authority to deliver thoughtful, timely underwriting decisions for…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Cargocorp Underwriterscargocorpuw.comHQ: Miami, FL, United StatesReported employees: 51-200 | Miami, FL, United States | 51-200 | Exact match | 37 contacts → |
“Supply to our customers in the insurance industry, Reinsurance capacity in ALL MARINE LINES, with an INTEGRAL RISK MANAGEMENT PROGRAM across the entire logistics chain.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  RB Jonesrbjonesinsurance.comHQ: Farmington Hills, MI, United StatesReported employees: 501-1,000 | Farmington Hills, MI, United States | 501-1,000 | Exact match | 34 contacts → |
“Founded in 1905, RB Jones is a leader in providing specialty risk coverage solutions to brokers, agents and wholesalers, including: Commercial Marine, Excess Energy, Commercial…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Griffin Underwriting Servicesgogus.com HQ: Bellevue, WA, United StatesReported employees: 51-200 | Bellevue, WA, United States | 51-200 | Exact match | 29 contacts → |
“Griffin Underwriting Services enables retail insurance agents and brokers to compete and win on hard-to-place risks.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | International Bond & Marine Brokerage, LTDintlbondmarine.com HQ: Morristown, NJ, United StatesReported employees: 11-50 | Morristown, NJ, United States | 11-50 | Exact match | 26 contacts → |
“International Bond & Marine was formed in 1986 as one of the first Managing General Underwriters for Customs Bonds in the U.S.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Trident Marine Managerstridentmm.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 25 contacts → |
“Trident Marine Managers is a leading specialty marine and offshore energy managing general underwriter (MGU) that delivers capacity and solid protection.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 165 company matches
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Marine insurance underwriting companies: dataset insights
September 15, 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
165 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 165 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 15, 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 marine insurance underwriting 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 marine insurance underwriting companies did RevenueBase find based in the United States?
The saved snapshot records 165 matching company records, 6,838 tracked contacts and 2,339 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 15, 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
Marine insurance underwriting companies by geography
Cite this list
RevenueBase Data Team. Top 25 marine insurance underwriting companies based in the United States. Snapshot: September 15, 2026. https://revenuebase.ai/companies/marine-insurance-underwriting-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
- Marine insurance underwriting companies based in Australia
- Marine insurance underwriting companies based in Germany
- Marine insurance underwriting companies based in Greece
- Marine insurance underwriting companies based in the United Kingdom
- AI companies based in the United States
- Cybersecurity companies based in the United States
Company intelligence · public preview
Top 25 marine insurance underwriting companies based in the United States
RevenueBase records 165 matching company records for marine insurance underwriting companies based in the United States, with 6,838 tracked contacts and 2,339 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 15, 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 marine insurance underwriting 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 | Core Specialty Insurance Holdings, INCcorespecialty.com HQ: Cincinnati, OH, United StatesReported employees: 1,001-5,000 | Cincinnati, OH, United States | 1,001-5,000 | Exact match | 635 contacts → |
“Core Specialty, through its subsidiary insurers, offers a diversified range of property, casualty, and marine insurance products for small to mid-sized businesses.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Palomarplmr.com HQ: La Jolla, CA, United StatesReported employees: 501-1,000 | La Jolla, CA, United States | 501-1,000 | Exact match | 363 contacts → |
“Founded in 2014, by a team with deep experience across underwriting, analytics, reinsurance and capital markets, Palomar is an innovative specialty insurer serving residential and…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Atlantic Casualty Insurance COatlanticcasualty.net HQ: Goldsboro, NC, United StatesReported employees: 201-500 | Goldsboro, NC, United States | 201-500 | Exact match | 335 contacts → |
“Atlantic Casualty Insurance Company (Atlantic Casualty) was formed by Strickland Insurance Group (SIG) in 1983 to underwrite a substantial book of non-standard personal auto.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Falvey Insurance Groupfalveyinsurancegroup.com HQ: North Kingstown, RI, United StatesReported employees: 51-200 | North Kingstown, RI, United States | 51-200 | Exact match | 228 contacts → |
“Falvey Insurance Group is one group with many solutions.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Mid-Continent Groupmcg-ins.com HQ: Tulsa, OK, United StatesReported employees: 201-500 | Tulsa, OK, United States | 201-500 | Exact match | 208 contacts → |
“We are Mid-Continent Group - Strong, Secure, Flexible and Supportive.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | The American Equity Underwriters, INCamequity.com HQ: Mobile, AL, United StatesReported employees: 51-200 | Mobile, AL, United States | 51-200 | Exact match | 159 contacts → |
“The American Equity Underwriters, Inc.(AEU) delivers specialized coverage and risk management solutions to waterfront employers across the United States.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | FOA & SON Insurancefoason.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 92 contacts → |
“Founded in 1861, Foa & Son are international insurance brokers based in New York City.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | EIMCeimc.com HQ: Jersey City, NJ, United StatesReported employees: 11-50 | Jersey City, NJ, United States | 11-50 | Exact match | 87 contacts → |
“At EIMC, we are the trusted partner for marine insurance and global supply chain communities worldwide.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Berkley Fire & Marine A Berkley Companyberkleymarine.com HQ: Schaumburg, IL, United StatesReported employees: 5,001-10,000 | Schaumburg, IL, United States | 5,001-10,000 | Exact match | 62 contacts → |
“Berkley Fire & Marine was launched in 2013 and is a Berkley company offering preferred inland marine and related property risks and services.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | American P&i Clubamerican-club.com HQ: New York, NY, United StatesReported employees: 51-200 | New York, NY, United States | 51-200 | Exact match | 52 contacts → |
“Founded in New York in 1917, celebrating 106 years of service, the American Club is the only P&I mutual domiciled in the Americas.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | HQ: Waterford, MI, United StatesReported employees: 11-50 | Waterford, MI, United States | 11-50 | Exact match | 49 contacts → |
“Universal Fire & Casualty Insurance Company (UFCIC) currently underwrites commercial property, general liability, business owner’s package (BOP), commercial multi-peril (CMP), and…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 49 contacts → |
“International Marine Underwriters (IMU) traces its roots to the early 1900s, and offers a full range of ocean and inland marine insurance solutions.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Global Marine Insurance Agencyglobalmarineinsurance.com HQ: Traverse City, MI, United StatesReported employees: 51-200 | Traverse City, MI, United States | 51-200 | Exact match | 48 contacts → |
“Global Marine Insurance Agency, a division of Specialty Program Group LLC provides specialized insurance solutions to boat, yacht and marine business owners.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Berkley Offshore Underwriting Managers A Berkley Companyberkleyoffshore.com HQ: New York, NY, United StatesReported employees: 11-50 | New York, NY, United States | 11-50 | Exact match | 44 contacts → |
“Berkley Offshore is an insurance provider specialising in Energy Upstream, Energy Liability and Marine Insurance.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Deans & Homerdeanshomer.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 44 contacts → |
“Deans & Homer was established in 1856 and is one of the oldest continuously operating companies in California.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | MHG Insurancemhginsurance.com HQ: Fort Lauderdale, FL, United StatesReported employees: 11-50 | Fort Lauderdale, FL, United States | 11-50 | Exact match | 43 contacts → |
“MHG Insurance is a leading insurance brokerage providing insurance advice and solutions for seafarers, businesses and groups and individuals around the world.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Riscom Regional Insurance Services Company, LLCriscomins.com HQ: Shreveport, LA, United StatesReported employees: 51-200 | Shreveport, LA, United States | 51-200 | Exact match | 42 contacts → |
“We are a professional insurance underwriting management company specializing in Commercial Automobile, Commercial General Liability, Commercial Property, Inland Marine and Garage…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | One80 Marineone80intermediaries.com HQ: Westbrook, CT, United StatesReported employees: 51-200 | Westbrook, CT, United States | 51-200 | Exact match | 42 contacts → |
“Our history dates back to the early 1990’s, when Maritime General Agency and Marine MGA were founded.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Ascot U.Sascotgroup.com HQ: New York, NY, United StatesReported employees: 201-500 | New York, NY, United States | 201-500 | Exact match | 41 contacts → |
“At Ascot U.S, we are offering specialty solutions at scale: we understand our markets, we strive to maintain the highest level of expertise in our fields, and we are laser-focused…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | OLD Republic Inland Marineoldrepublicinlandmarine.com HQ: Chicago, IL, United StatesReported employees: 201-500 | Chicago, IL, United States | 201-500 | Exact match | 37 contacts → |
“Old Republic Inland Marine is a collaborative team of highly specialized, experienced underwriters with the authority to deliver thoughtful, timely underwriting decisions for…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Cargocorp Underwriterscargocorpuw.com HQ: Miami, FL, United StatesReported employees: 51-200 | Miami, FL, United States | 51-200 | Exact match | 37 contacts → |
“Supply to our customers in the insurance industry, Reinsurance capacity in ALL MARINE LINES, with an INTEGRAL RISK MANAGEMENT PROGRAM across the entire logistics chain.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | RB Jonesrbjonesinsurance.com HQ: Farmington Hills, MI, United StatesReported employees: 501-1,000 | Farmington Hills, MI, United States | 501-1,000 | Exact match | 34 contacts → |
“Founded in 1905, RB Jones is a leader in providing specialty risk coverage solutions to brokers, agents and wholesalers, including: Commercial Marine, Excess Energy, Commercial…” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Griffin Underwriting Servicesgogus.com HQ: Bellevue, WA, United StatesReported employees: 51-200 | Bellevue, WA, United States | 51-200 | Exact match | 29 contacts → |
“Griffin Underwriting Services enables retail insurance agents and brokers to compete and win on hard-to-place risks.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | International Bond & Marine Brokerage, LTDintlbondmarine.com HQ: Morristown, NJ, United StatesReported employees: 11-50 | Morristown, NJ, United States | 11-50 | Exact match | 26 contacts → |
“International Bond & Marine was formed in 1986 as one of the first Managing General Underwriters for Customs Bonds in the U.S.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Trident Marine Managerstridentmm.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 25 contacts → |
“Trident Marine Managers is a leading specialty marine and offshore energy managing general underwriter (MGU) that delivers capacity and solid protection.” Recorded description excerpt · September 15, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Marine insurance underwriting companies: dataset insights
September 15, 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
165 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 165 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 15, 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 marine insurance underwriting 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 marine insurance underwriting companies did RevenueBase find based in the United States?
The saved snapshot records 165 matching company records, 6,838 tracked contacts and 2,339 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 15, 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
Marine insurance underwriting companies by geography
Cite this list
RevenueBase Data Team. Top 25 marine insurance underwriting companies based in the United States. Snapshot: September 15, 2026. https://revenuebase.ai/companies/marine-insurance-underwriting-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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