X0306 4 2019-05-20 0 0001163302 UNITED STATES STEEL CORP X 0001189930 FARACI JOHN V 600 GRANT STREET PITTSBURGH PA 15219 1 0 0 0 Common Stock 2019-05-20 4 P 0 1000 14.376 A 7196.581 D Common Stock 2019-05-31 4 A 0 1000 0.00 A 8196.581 D The transaction was executed in multiple trades at prices ranging from $14.375 to $14.3769. The price reported in this column reflects a weighted average purchase price. The reporting person hereby undertakes to provide upon request to the Commission, issuer or securityholder full information regarding the number of shares and prices at which the transaction was effected. Shares acquired under the terms of the United States Steel Corporation Non-Employee Director Stock Program. /s/ Megan Bombick by power of attorney 2019-05-31