- ACE Property & Casualty Insurance Company
- ACE-USA
- Air Systems Acquisition, Inc.
- American Golf Corporation
- American Risk Pooling Consultants (ARPCO)
- Auto-Owners Insurance Co.
- Avis Rent-A-Car
- Beck Suppliers, Inc.
- Blair & Associates Insurance Agency
- Brown & Brown, Inc.
- Burns Iron & Metal, Inc.
- Caterpillar, Inc.
- Citizens Insurance Company
- Crawford & Co.
- D.G. Focht Construction Co.
- Diversified Insurance Service Agency
- ESIS
- Farmers Insurance Group
- Federal Express Corp.
- Federal Express Corporation
- GEICO
- German Mutual
- Grange Mutual Casualty Co.
- Great West Casualty Co.
- H & W Risk Management, Inc.
- Hertz Claim Management Corp.
- Johnny's Resort & Campground
- Kemper Independence Insurance Company
- Ladd's Marina, Inc.
- Lagoon Marine, Inc.
- Lake & Bay Yacht Sales
- Laminate Technologies, Inc.
- Lawyers Protector Plan
- Marblehead Bank
- Meinke Marinas
- Monitor Insurance
- Monroe Guaranty Ins. Co.
- Navigators Insurance Group
- Nova Pro Risk Solutions
- NTC Computers, LLC
- Ohio Bar Liability Insurance Company (OBLIC)
- Ohio Casualty Ins., Co.
- Ohio Insurance Guaranty Association
- Ohio Township Association Risk Management Authority (OTARMA)
- Progressive Casualty Insurance Co.
- Public Entities Pool (PEP)
- Public Entity Risk Services of Ohio (PERSO)
- Risk Enterprise Management
- Safeco
- Spencerville Metal Systems
- State Farm Fire and Casualty Co.
- State Farm General Insurance Company
- State Farm Life Insurance Company
- State Farm Mutual Automobile Insurance Cos.
- The Catawba Moorings, Inc.
- Toledo Area Regional Transit Authority
- Travelers/St. Paul Insurance Co.
- Utica Mutual Insurance Co.
- W. W. Williams Co.
- Werner Enterprises
- Western World Insurance
