- ACSTAR
- AIG
- Arch Insurance Company
- Berkley Surety Group
- Capital Indemnity
- CBIC
- CNA Surety
- First Sealord Surety
- Guarantee Company of America
- Hanover
- Hartford
- HCC Surety Group
- Insco Dico Group
- Lexon Insurance
- Old Republic
- Safeco Insurance Company
- Travelers
- Westfield Insurance
- Zurich North America