| Blue Cross / Blue Shield |
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| Mercury General Corporation (Principal Office Location: Los Angeles, California) |
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| Travelers |
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| First American Insurance Company |
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| Blue Cross of California |
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| The Progressive Corporation (Principal Office Location: Mayfield Village, Ohio) |
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| Foremost Insurance Group (Principal Office Location: Caledonia, Michigan) |
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| Pacific Select Property Insurance Company |
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| GeoVera Insurance |
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| Fireman's Fund |
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| The Hartford Financial Services Group, Inc. (Principal Office Location: Hartford, Connecticut) |
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| Safeco |
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| Chubb |
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| Infinity Insurance |
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| Encompass Insurance |
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| Stillwater Insurance Group (Principal Office Location: Jacksonville, Florida) |
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| Navigators |
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| McGraw Insurance |
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| CSE Insurance Group |
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| Kemper Insurance |
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