- AAA
- Auto-Owners
- Celina Insurance Group
- CNA Surety
- EMC Companies
- Encova
- Farmers Mutual Hail Insurance Company of Iowa
- Foremost
- Grundy
- Hagerty
- Hawkeye Mutual
- ICAP
- IMT Insurance
- IMWCA
- Integrity
- Markel
- Merchants Bonding Company
- MetLife
- Nationwide
- Pekin Ins.
- Progressive
- Safeco
- State Auto
- Travelers
- United Fire Group
- United Healthcare
- Wellmark Blue Cross Blue Shield