Provident Insurance Group
- 1st Auto
- Berkshire Hathaway GUARD
- Dairyland
- Donegal
- Ellington Mut.
- EMC
- Erie Insurance
- Germantown Mutual Ins. Co.
- Hartford
- Liberty Mutual
- Progressive
- Rockford Mutual
- State Auto
- Travelers
- Wisconsin Mutual
- John E. Schlindler
- Roger A. Praefke