
Who writes ocean marine in Missouri
From the Missouri company list; alphabetical, since Missouri doesn't publish every company's premium by line.
72 insurers are licensed for ocean marine in Missouri on the regulator's list. American International Group wrote the most in 2025 (14.4% of the state's premium).
By Sam Alishahi, independent insurance broker · All lines in Missouri
The companies
| Company | NAIC | Home state | Status here | Lines |
|---|---|---|---|---|
| Accelerant National Insurance Company | 10220 | AR | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more |
| Accredited Surety and Casualty Company, Inc. | 26379 | FL | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +5 more |
| Ace American Insurance Company | 22667 | PA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +11 more |
| Ace Fire Underwriters Insurance Company | 20702 | PA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more |
| Affiliated F M Insurance Company | 10014 | RI | Admitted (licensed) | Commercial package (BOP, CMP), Earthquake, Homeowners +3 more |
| AGCS Marine Insurance Company | 22837 | IL | Admitted (licensed) | Commercial package (BOP, CMP), Inland marine, Ocean marine |
| AIG Property Casualty Company | 19402 | IL | Admitted (licensed) | Personal auto, Earthquake, Homeowners +5 more |
| Amica Mutual Insurance Company, The | 19976 | RI | Admitted (licensed) | Personal auto, Earthquake, Homeowners +4 more |
| Arch Insurance (UK) Limited | 11150 | MO | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +10 more |
| Argonaut Insurance Company | 19801 | NE | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more |
| Ascot Insurance Company | 23752 | CO | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +5 more |
| Aspen American Insurance Company | 43460 | TX | Admitted (licensed) | Commercial package (BOP, CMP), Earthquake, Inland marine +3 more |
| Atain Insurance Company | 29033 | TX | Admitted (licensed) | Ocean marine |
| Atlantic Specialty Insurance Company | 27154 | NY | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +9 more |
| Automobile Insurance Company of Hartford, Connecticut (The) | 19062 | CT | Admitted (licensed) | Earthquake, Homeowners, Inland marine +3 more |
| AXIS Insurance Company | 37273 | IL | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more |
| Beazley Insurance Company, Inc. | 37540 | CT | Admitted (licensed) | Fidelity bonds, Inland marine, General liability +3 more |
| Berkshire Hathaway Specialty Insurance Company | 22276 | NE | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more |
| Chubb Indemnity Insurance Company | 12777 | NY | Admitted (licensed) | Personal auto, Commercial package (BOP, CMP), Earthquake +6 more |
| Continental Insurance Company, (The) | 35289 | PA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more |
| Endurance American Insurance Company | 10641 | DE | Admitted (licensed) | Commercial package (BOP, CMP), Fidelity bonds, Inland marine +3 more |
| Federal Insurance Company | 20281 | IN | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +9 more |
| Foremost Insurance Company Grand Rapids, Michigan | 11185 | MI | Admitted (licensed) | Personal auto, Homeowners, Inland marine +3 more |
| Garrison Property and Casualty Insurance Company | 21253 | TX | Admitted (licensed) | Personal auto, Commercial package (BOP, CMP), Earthquake +5 more |
| GEICO Marine Insurance Company | 37923 | NE | Admitted (licensed) | Personal auto, Commercial auto, Inland marine +2 more |
| Great American Insurance Company | 16691 | OH | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +12 more |
| Hanover Insurance Company (The) | 22292 | NH | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +9 more |
| HDI Global Insurance Company | 41343 | IL | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +5 more |
| Imperium Insurance Company | 35408 | TX | Admitted (licensed) | Personal auto, Commercial auto, Inland marine +4 more |
| Indemnity Insurance Company of North America | 43575 | PA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more |
| Insurance Company of North America | 22713 | PA | Admitted (licensed) | Ocean marine |
| Liberty Mutual Fire Insurance Company | 23035 | WI | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more |
| Liberty Mutual Insurance Company | 23043 | MA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +10 more |
| Markel American Insurance Company | 28932 | VA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more |
| Markel Insurance Company | 38970 | IL | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +9 more |
| Mitsui Sumitomo Insurance USA Inc. | 22551 | NY | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +4 more |
| National Casualty Company | 11991 | OH | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +6 more |
| National Specialty Insurance Company | 22608 | TX | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +4 more |
| National Union Fire Insurance Company of Pittsburgh, Pennsylvania | 19445 | PA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +11 more |
| Navigators Insurance Company | 42307 | NY | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +3 more |
| New Hampshire Insurance Company | 23841 | IL | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +6 more |
| New York Marine and General Insurance Company | 16608 | NY | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more |
| Penn Millers Insurance Company | 14982 | PA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +5 more |
| Pinnacle National Insurance Company | 21296 | TX | Admitted (licensed) | Ocean marine |
| Point Specialty Insurance Company | 25747 | WI | Admitted (licensed) | Inland marine, Ocean marine |
| Privilege Underwriters Reciprocal Exchange, PURE Risk Mgt, Atty-in-Fact | 12873 | FL | Admitted (licensed) | Personal auto, Homeowners, Inland marine +3 more |
| QBE Insurance (Europe) Limited | 39217 | PA | Admitted (licensed) | Personal auto, Commercial auto, Earthquake +7 more |
| Riverport Insurance Company | 36684 | IA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +5 more |
| RLI Insurance Company | 13056 | IL | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more |
| SAMSUNG FIRE \u0026 MARINE INSURANCE CO., LTD. (U.S. BRANCH) | 38300 | NY | Admitted (licensed) | General liability, Ocean marine, Workers' compensation |
| Standard Fire Insurance Company (The) | 19070 | CT | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +9 more |
| Star Insurance Company | 18023 | MI | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more |
| StarNet Insurance Company | 40045 | IA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more |
| STARR INDEMNITY \u0026 LIABILITY COMPANY | 38318 | TX | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more |
| StarStone National Insurance Company | 25496 | DE | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +6 more |
| State National Insurance Company, Inc. | 12831 | TX | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more |
| Stratford Insurance Company | 40436 | NH | Admitted (licensed) | General liability, Ocean marine, Commercial property (fire and allied lines) |
| Sutton National Insurance Company | 25798 | OK | Admitted (licensed) | Homeowners, Ocean marine, Workers' compensation |
| Swiss Re Corporate Solutions America Insurance Corporation | 29874 | MO | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more |
| Tokio Marine America Insurance Company | 10945 | NY | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +5 more |
| TravCo Insurance Company | 28188 | CT | Admitted (licensed) | Inland marine, Ocean marine |
| Travelers Home and Marine Insurance Company (The) | 27998 | CT | Admitted (licensed) | Personal auto, Earthquake, Homeowners +3 more |
| Travelers Indemnity Company of America (The) | 25666 | CT | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +10 more |
| Travelers Personal Insurance Company | 38130 | CT | Admitted (licensed) | Earthquake, Homeowners, Inland marine +2 more |
| Travelers Property Casualty Company of America | 25674 | CT | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +11 more |
| U.S. Specialty Insurance Company | 29599 | TX | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +7 more |
| UNITED FIRE \u0026 CASUALTY COMPANY | 13021 | IA | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more |
| United Services Automobile Association, USAA Reciprocal, Attorney-in-fact | 25941 | TX | Admitted (licensed) | Personal auto, Earthquake, Homeowners +4 more |
| USAA Casualty Insurance Company | 25968 | TX | Admitted (licensed) | Personal auto, Earthquake, Homeowners +4 more |
| Westchester Fire Insurance Company | 10030 | PA | Admitted (licensed) | Commercial package (BOP, CMP), Earthquake, Fidelity bonds +6 more |
| XL Specialty Insurance Company | 37885 | DE | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +8 more |
| Zurich American Insurance Company | 16535 | NY | Admitted (licensed) | Personal auto, Commercial auto, Commercial package (BOP, CMP) +9 more |
Method and source
Source: the Missouri insurance regulator company list, read 2026-10-18 and the surplus lines list. Admitted = every ACTIVE Missouri licensee (P&C, life, health, HMO, TPA, warranty, prepaid dental, etc.); filter on type. 'type' is the license Description from each company's detail page (e.g. 'Property and Casualty (Ch 379, RSMo)'); where a detail page was not read, type comes from Missouri market-share membership and is suffixed '(market share)'. 'lines' = lines of business with non-zero direct written premium in the 2025 Missouri market share report (licensed companies only). 'domicile' is only known for companies in the market share report. 'since' = Date Admitted from the detail page. Surplus lines list carries no NAIC code; naic filled by exact normalized-name match (naic_source says where), alien = domicile not a US state code. Detail-page crawl in progress; this file will be rewritten when it finishes. "Premium" is direct premium written in the state for the year shown; "share" is that company's part of the state total for the line. A company can be licensed for a line and write none of it, and a surplus lines insurer can write a line without a state license for it.
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