X0306 4 2018-05-11 0000874977 State Auto Financial CORP STFC 0001398592 Markert Thomas Edward 190 SE 5TH AVENUE APT 567 DELRAY BEACH FL 33483 1 0 0 0 Restricted Share Units 2018-05-11 4 A 0 2885 0 A Common Stock 2885 37455.088 D Each restricted share unit represents a right to receive either one share of STFC common stock or the cash equivalent thereof, as further described in the Outside Directors Restricted Share Unit Plan. The restricted share units become payable, in cash or common shares, at the election of the reporting person, upon the reporting person's termination of services as a director, following a 6 month vesting period. Includes restricted share units previously granted under Outside Directors Restricted Share Unit Plan and restricted share units credited with dividends, equivalent in value to those declared and paid on one share of STFC common stock; 129 restricted share units acquired on 6/30/17; 129 restricted share units acquired on 9/30/17; 119 restricted share units acquired on 12/31/17 and 121 restricted share units acquired on 3/31/18. Thomas E. Markert by Melissa A. Centers, attorney in fact, pursuant toi a POA filed with the Commission 5-9-16. 2018-05-11