State Auto Financial Corporation (State Auto Financial) is a property and casualty insurance holding company. The Company is primarily engaged in writing both personal and business lines of insurance. State Auto Financial owns 100% of State Auto Property & Casualty Insurance Company (State Auto P&C), Milbank Insurance Company (Milbank), Farmers Casualty Insurance Company (Farmers), State Auto Insurance Company of Ohio (SA Ohio) and State Auto National Insurance Company (SA National), each of which is a property and casualty insurance company. State Auto Financial owns 100% of Stateco Financial Services, Inc. (Stateco), which provides investment management services to affiliated insurance companies. It also owns 100% of Strategic Insurance Software, Inc. (S.I.S.), a developer and seller of insurance-related software. State Auto P&C and Stateco share ownership of 518 Property Management and Leasing, LLC (518 PML), which owns and leases property to affiliated companies.