X0306 4 2019-02-15 0 0001163302 UNITED STATES STEEL CORP X 0001509500 Bradley Kevin 600 GRANT STREET PITTSBURGH PA 15219 0 1 0 0 EVP & Chief Financial Officer Common Stock 2019-02-15 4 P 0 10000 22.79 A 122830 D Common Stock 4009.019 I By 401(k) Plan The price in column 4 is a weighted average price. The prices actually paid ranged from $22.785 to $22.79. The reporting person undertakes to provide to United States Steel Corporation, any security holder of United States Steel Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote. /s/ Megan Bombick by power of attorney 2019-02-19