- AIG
- American European
- AmTrust
- Andover Companies
- Applied Underwriters
- Associated Mutual Insurance Cooperative
- Berkley Luxury Group
- Cambridge
- Chubb
- Cigna
- Clermont
- Falls Lake
- Fireman's Fund
- Fitchburg
- Greater NY Mut.
- Hartford Steam Boiler
- Lancer
- Liberty Mutual
- Merrimack Mut. Fire
- Nationwide
- Otsego Mut.
- Quincy Mutual Group
- Rochdale Ins.
- Rutgers Cas.
- Security Mut.
- Security Natl.
- Seneca
- ShelterPoint
- Strathmore
- Technology Ins. Co.
- Travelers
- Utica First
- Wesco