- American Modern Insurance Group
- Auto-Owners
- Buckeye Insurance Group
- Encova
- Foremost
- Grange
- Grinnell Mutual
- Liberty Mutual
- Ohio FAIR Plan
- Ohio Mutual
- Progressive
- Safeco
- Sandy & Beaver
- State Auto
- Trexis
- Western Reserve Group
- Westfield Insurance
- Dennis L. Cahall, President