State Auto Financial Corporation, through its subsidiaries, engages in writing personal, business, and specialty insurance products. It operates through four segments: Personal insurance, Business insurance, Specialty Insurance, and Investment Operations. The Personal Insurance segment primarily provides personal automobile and homeowners insurance products to the personal insurance market. The Business insurance segment offers commercial automobile, commercial multi-peril, fire and allied, general liability, and workers' compensation insurance covering small-to-medium sized commercial exposures in the business insurance market. The Specialty Insurance segment provides commercial coverages that require specialized product underwriting, claims handling, or risk management services. This segment markets and underwrites specialized property exposures with a focus on catastrophe exposed risks covering property and general liability; markets and underwrites commercial exposures that have unique insurance requirements comprising commercial auto, healthcare, umbrella, property, and general liability coverages; and markets and distributes homogenous risks that require specialized underwriting and claims expertise covering commercial auto, general liability, and property. The Investment Operations segment offers investment management services to affiliated insurance companies. The company markets its products primarily through independent agencies, including retail agencies and wholesale brokers in the United States. State Auto Financial Corporation was founded in 1950 and is headquartered in Columbus, Ohio. State Auto Financial Corporation is a subsidiary of State Automobile Mutual Insurance Company.