| Liberty Mutual |
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| Safeco |
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| Farmers Insurance |
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| Berkshire Hathaway GUARD Insurance Companies (Principal Office Location: Wilkes-Barre, Pennsylvania) |
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| Chubb |
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| Foremost Insurance Group (Principal Office Location: Caledonia, Michigan) |
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| Hanover Insurance |
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| Philadelphia Insurance Companies |
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| Peerless Insurance |
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| Quincy Mutual |
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| CNA Surety Corporation (Principal Office Location: Chicago, Illinois) |
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| Employers Insurance Group |
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| Lloyds |
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| New London County Mutual Insurance Company |
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| Commerce Insurance Co. |
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| MA Fair Plan |
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| Danbury |
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| National Grange Mutual |
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| Plymouth Rock |
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| UPC Insurance |
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| Safety Insurance |
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| Pilgrim Insurance |
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| AARP |
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| Hagerty Insurance |
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| Hingham Mutual Fire Insurance Company |
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| Main Street America Group |
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| Preferred Mutual Insurance Company |
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| Union Mutual |
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| Providence Mutual |
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| NLC |
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| MAPFRE Insurance |
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