Insurance Systems Group, Inc.
- Auto-Owners
- Chubb
- Encova
- Grange
- Hartford
- Progressive
- State Auto
- Zurich
- Berkshire Hathaway Homestate
- Chubb
- CNA
- Encompass
- Encova
- Foremost
- Grange
- Great American
- GuideOne
- Hartford
- Liberty Mutual
- Philadelphia
- Progressive
- Safeco
- State Auto
- Travelers
- Utica National Insurance Group
- Westfield Insurance
- Michael G. Herzak, CIC, CPIA, MLIS, CRMCS, President
- Michael G. Herzak, II, CIC, CRM, CPIA, MLIS, V.P.
- Daniel C. Herzak, CIC, CRM, CPIA, MLIS, V.P.