- Accident Fund Insurance Company
- American Hallmark
- American Modern Insurance Group
- Arkansas Mutual
- Berkshire Hathaway
- BITCO Insurance Companies
- Chubb
- Cincinnati Casualty Company
- CNA
- FCCI
- Foremost
- Hanover
- Hartford
- Liberty Mutual
- MetLife
- Natl. American
- ProAssurance
- Progressive
- Safeco
- State Auto
- Summit
- Travelers
- Union Std.
- United Fire Group
- Westfield Insurance
- Zurich
- Gary Schaefer, Pres. BHC OK