| Safeco |
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| Zurich |
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| The Hartford Financial Services Group, Inc. (Principal Office Location: Hartford, Connecticut) |
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| The Progressive Corporation (Principal Office Location: Mayfield Village, Ohio) |
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| Blue Cross / Blue Shield |
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| Burns & Wilcox |
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| Erie Insurance |
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| The Harford Insurance |
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| Builders Mutual |
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| CNA Surety Corporation (Principal Office Location: Chicago, Illinois) |
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| Grange Insurance |
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| Dairyland Auto |
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| National Grange Mutual |
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| Travelers |
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| Berkshire Hathaway Homestate Companies |
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| Foremost Insurance Group (Principal Office Location: Caledonia, Michigan) |
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| Hagerty Insurance |
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| Western Surety Company |
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| Vacant Express |
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| Blue Cross Blue Shield of Tennessee |
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| Dairyland Motorcycle |
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| Appalachian Underwriters, Inc. |
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| Tapco Underwriters, Inc. (Principal Office Location: Brea, California) |
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| US Assure |
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