Gary J. Gruber

National Interstate Corp. operates as a property and casualty insurance firm with a niche orientation and focus on the transportation industry. Its products include insurance for passenger, moving and storage, and truck transportation companies, alternative risk transfer, insurance programs for commercial risks, specialty personal lines consisting of insurance products focused primarily on recreational vehicle owners, and transportation and general commercial insurance in Hawaii and Alaska. The company was founded by Alan R. Spachman on January 26, 1989 and is headquartered in Richfield, OH.

Great American Insurance Co. provides insurance products and services. Its services include property, casualty tax-deferred annuities, life, health and auto insurance products. The firm also focuses on commercial products for businesses and in the sale of annuities, life and supplemental health insurance products. The company was founded in 1872 and is headquartered in Cincinnati, OH.

Republic Indemnity Co. of America provides compensation insurance services to small and midsized businesses. It distributes its products through independent agents and brokers. The company was founded in 1945 and is headquartered in Encino, CA.

Mid-Continent Casualty Co. provides fire, marine and casualty insurance. The company is headquartered in Tulsa, OK.

Founded in 2018, Great American Holding (Europe) Ltd. is a British company that functions as an investment holding company. Part of American Financial Group, Inc., the company is based in Bristol, UK.

Part of American Financial Group, Inc., Bridgefield Casualty Insurance Co. operates as an insurance company. The company is based in Lakeland, FL.