X0306 4 2018-03-05 0000874977 State Auto Financial CORP STFC 0001380460 English Steven Eugene 518 E. BROAD STREET COLUMBUS OH 43215 0 1 0 0 Senior Vice President Common Shares without par value 2018-03-05 4 F 0 791 28.58 D 35109.473 D Represents common shares surrendered by the reporting person to STFC (or disposed to the issuer thereof) for payment of tax liability incident to a prior stock award of 2,471 common shares which vested on March 5, 2018. Prior thereto, such disposition to the issuer had been approved by the STFC Compensation Committee pursuant to Rule 16b-3(e) and is therefore exempt from the provisions of Section 16(b) of the Securities Exchange Act of 1934. The price per share of $28.58 represents the closing price of STFC's common shares on March 5, 2018. /s/Steven E. English by Melissa A. Centers, attorney in fact, pursuant to POA filed with commission on 3-7-16. 2018-03-06