- AIG
- American Strategic Insurance
- Berkley Mid-Atlantic Group
- BITCO Insurance Companies
- Chubb
- Church Mutual
- Cincinnati Insurance Companies
- CNA
- Donegal
- Eastern Alliance
- Encompass
- Fireman's Fund
- Foremost
- Great American
- Hagerty
- Hartford
- Kemper
- Key Risk
- Lackawanna
- Liberty Mutual
- MetLife
- Miller's Mut.
- Mitsui Sumitomo
- Nationwide
- Nationwide Agribusiness
- Ohio Casualty
- Penn Prime
- Pennsylvania Lumbermens Mutual
- Philadelphia
- PMA
- Progressive
- Resort Guard
- Safeco
- Selective
- State Auto
- Travelers
- Utica National Insurance Group
- Westfield Insurance
- Windsor-Mount Joy Mutual
- XL Insurance
- Zurich