4. Private Insurance Companies I. Two different types of insurance companies. Mutual insurance company Stock insurance company 1. Mutual insurance companies: non-profit The owners are the policyholders insured by the corporation Advance premium mutual Assessment mutual Factory mutual4. Private Insurance Companies I. Two different types of insurance companies: Mutual insurance company Stock insurance company 1. Mutual insurance companies: non-profit The owners are the policyholders insured by the corporation ▪ Advance premium mutual ▪ Assessment mutual ▪ Factory mutual