X0407 4 2023-04-25 0 0001163302 UNITED STATES STEEL CORP X 0001278669 ENGEL JOHN 225 WEST STATION SQUARE DRIVE SUITE 700 PITTSBURGH PA 15219 1 0 0 0 0 United States Steel Corporation Common Stock 2023-04-25 4 A 0 7219 0.00 A 88936.97 D Represents shares awarded pursuant to the Corporation's Deferred Compensation Program for Non-Employee Directors through a transaction exempt under Rule 16b-3. Deferred stock units vest on the earlier of (i) the first anniversary of the grant date and (ii) the next annual meeting of stockholders, and remain deferred until retirement from the Board of Directors. /s/ Megan Bombick, By Power of Attorney from John J. Engel 2023-04-27