X0306 4 2021-12-31 0000874977 State Auto Financial CORP STFC 0001658457 Garland Kim Burton 518 EAST BROAD ST. COLUMBUS OH 43215 0 1 0 0 Senior Vice President Common Shares without Par Value 2021-12-31 4 F 0 759 51.69 D 26306.272 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 10,000 common shares in which 2,500 shares vested out of the 10,000 shares on 12/31/21. 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 porovisions of Section 16(b) of the Securities Exchange Act of 1934. The price per share of $51.69 represents the closing price of STFC's common shares on December 31, 2021. Includes the following acquisition: 0.382 shares acquired in December 2021 through a DRIP Account. /s/Kim Burton Garland by Melissa A. Centers, attorney in fact pursuant to POA filed with the Commission on 11/16/15. 2022-01-03