State Auto Financial Corporation (“STFC”) is a super regional insurance holding company headquartered in Columbus, Ohio and is proud to be a Trusted Choice® company partner and one of Forbes’ 50 Most Trustworthy Financial Companies in America. STFC, through its three insurance companies writes personal, business and specialty insurance. STFC’s principal insurance subsidiaries are State Auto Property & Casualty, Milbank Insurance Company, and State Auto Insurance Company of Ohio, each of which is a property and casualty insurance company.

Approximately 62.5% of State Auto Financial’s outstanding common shares are owned by State Automobile Mutual Insurance Company (“State Auto Mutual”). State Auto Mutual is an Ohio domiciled mutual property and casualty insurance company organized in 1921. State Auto Mutual’s other subsidiaries and affiliates include State Auto Insurance Company of Wisconsin, Meridian Security Insurance Company, Patrons Mutual Insurance Company of Connecticut, Rockhill Insurance Company, Plaza Insurance Company, American Compensation Insurance Company and Bloomington Compensation Insurance Company, each of which is a property and casualty insurance company. State Auto Mutual and its insurance subsidiaries and affiliates, along with STFC’s insurance subsidiaries make up the State Auto Group. A pooling arrangement exists between all the insurance subsidiaries in the State Auto Group by which premiums, losses and underwriting expenses are shared by the pool participants. STFC receives 65 percent of this underwriting pool, while State Auto Mutual receives 35 percent.

The State Auto Group markets its insurance products throughout the United States, through independent insurance agencies, which include retail agencies and wholesale brokers.

With a commitment to responsible cost-based pricing, conservative investments and sound underwriting practices, STFC has maintained a healthy financial record since becoming a public company in 1991. Combined with its focus on providing outstanding customer service to policyholders and agents, State Auto has earned the reputation as one of the strongest and best managed super regional insurance groups in the industry. The State Auto Insurance Companies carry an A- (Excellent) rating from the A.M. Best Company.

State Auto Financial Corporation is traded on the Nasdaq Global Select Market System under the symbol STFC.