X0407 4 2023-04-25 0 0001163302 UNITED STATES STEEL CORP X 0001707516 Johnson Jeh C. 1285 AVENUE OF THE AMERICAS NEW YORK NY 10019-6064 1 0 0 0 0 United States Steel Corporation Common Stock 2023-04-25 4 A 0 12303 0.00 A 63546.419 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 Jeh C. Johnson 2023-04-27